US4392101A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of charging batteries and apparatus therefor
Assignee: Black and Decker Inc
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Filing: 1982-01-05
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Granted: 1983-07-05
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Expires: 2002-01-05
Abstract
Abstract A method of fast charging batteries by means of precise analysis of the profile of the variation with time of a characteristic of the battery which is indicative of the variation in stored chemical energy as the battery is charged. The method specifically comprises analyzing the profile for the occurrence of a particular series of events preferably including one or more inflection points which precisely identify the point in time at which the application of a fast charge rate should be discontinued. Additional methods of analysis provide for termination or control of the charging current upon the occurrence of other events such as limiting values on time, voltage or voltage slope or a negative change in the level of stored energy. Apparatus for performing these methods comprises a suitable power supply and a microcomputer for analyzing the profile and controlling the power supply.
Inventors
- 👤 David A. Saar
- 👤 Richard T. Walter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 15:36
CPC Classifications
H; H01; H01M; H01M10/00; H01M10/42; H01M10/44; H02; H02J; H02J7/00; H02J7/90; H02J7/94; H02J7/953; H02J7/96; H02J7/963; Y; Y02; Y02E; Y02E60/00; Y02E60/10
Claims Analysis
Total Claims: 103
Claim 1
Independent Claim
119 words
A method of rapidly and efficiently charging a battery of the type having characteristic associated therewith that varies with the state of charge of the battery and in which the characteristic varies with time during charging to exhibit a plurality of inflection points prior to the battery attaining substantial full charge, the method comprising the steps of: supplying electrical energy to the battery for charging thereof; monitoring said characteristic drawn by the battery during charging; analyzing the variation of said monitored characteristic with time to determine the occurrence of the last inflection point exhibited prior to the battery attaining substantial full charge; and controlling the supply of electrical energy of the battery on the basis of the so-determined occurrence.
Claim 2
Independent Claim
119 words
A method of rapidly and efficiently charging a battery of the type having characteristic associated therewith that varies with the state of charge of the battery and in which the characteristic varies with time during charging to exhibit a plurality of inflection points prior to the battery attaining substantial full charge, the method comprising the steps of: supplying electrical energy to the battery for charging thereof; monitoring said characteristic drawn by the battery during charging; analyzing the variation of said monitored characteristic with time to determine the occurrence of the last inflection point exhibited prior to the battery attaining substantial full charge; and controlling the supply of electrical energy of the battery on the basis of the so-determined occurrence.
Claim 3
Independent Claim
158 words
A method of rapidly and efficiently charging a battery of the type in which the voltage characteristic thereof varies with the state of charge of the battery and in which the voltage characteristic varies with time during charging to exhibit an inflection point just prior to the battery attaining substantial full charge, the inflection point characterized by a change in sign of the second derivative of the voltage characteristic variation with time, the method comprising the steps of: supplying electrical energy to the battery for charging thereof; monitoring said voltage characteristic of the battery during charging; analyzing the variation of said monitored voltage characteristic with time to determine the occurrence of the inflection point exhibited just prior to the battery attaining substantial full charge by determining a change in sign of the second derivative of said voltage characteristic variation with time; and controlling the supply of electrical energy to the battery on the basis of the so-determined occurrence.
Claim 4
Independent Claim
158 words
A method of rapidly and efficiently charging a battery of the type in which the voltage characteristic thereof varies with the state of charge of the battery and in which the voltage characteristic varies with time during charging to exhibit an inflection point just prior to the battery attaining substantial full charge, the inflection point characterized by a change in sign of the second derivative of the voltage characteristic variation with time, the method comprising the steps of: supplying electrical energy to the battery for charging thereof; monitoring said voltage characteristic of the battery during charging; analyzing the variation of said monitored voltage characteristic with time to determine the occurrence of the inflection point exhibited just prior to the battery attaining substantial full charge by determining a change in sign of the second derivative of said voltage characteristic variation with time; and controlling the supply of electrical energy to the battery on the basis of the so-determined occurrence.
Claim 5
Independent Claim
170 words
A method of rapidly and efficiently charging a battery of the type in which the voltage characteristic thereof varies with the state of charge of the battery and in which the voltage characteristic varies with time during charging to exhibit an inflection point prior to the battery attaining substantial full charge, the inflection point characterized by a change in sign of the second derivative of the voltage characteristic variation with time from a positive to a negative value, the method comprising the steps of: supplying electrical energy to the battery for charging thereof; monitoring said voltage characteristic of the battery during charging; analyzing the variation of said monitored voltage characteristic with time to determine the occurrence of the inflection point exhibited prior to the battery attaining substantial full charge by determining a change in sign from a positive to a negative value of the second derivative of said voltage characteristic variation with time; and controlling the supply of electrical energy to the battery on the basis of the so-determined occurrence.
Claim 6
Independent Claim
170 words
A method of rapidly and efficiently charging a battery of the type in which the voltage characteristic thereof varies with the state of charge of the battery and in which the voltage characteristic varies with time during charging to exhibit an inflection point prior to the battery attaining substantial full charge, the inflection point characterized by a change in sign of the second derivative of the voltage characteristic variation with time from a positive to a negative value, the method comprising the steps of: supplying electrical energy to the battery for charging thereof; monitoring said voltage characteristic of the battery during charging; analyzing the variation of said monitored voltage characteristic with time to determine the occurrence of the inflection point exhibited prior to the battery attaining substantial full charge by determining a change in sign from a positive to a negative value of the second derivative of said voltage characteristic variation with time; and controlling the supply of electrical energy to the battery on the basis of the so-determined occurrence.
Claim 7
Independent Claim
161 words
A method of rapidly and efficiently charging a battery of the type in which the current characteristic drawn by the battery during charging varies with the state of charge of the battery and in which the current characteristic varies with time during charging to exhibit an inflection point just prior to the battery attaining substantial full charge by determining a change in sign of the second derivative of said current characteristic variation with time, the method comprising the steps of: supplying electrical energy to the battery for charging thereof; measuring said current characteristic drawn by the battery during charging; analyzing the variation of said monitored current characteristic with time to determine the occurrence of the inflection point exhibited just prior to the battery attaining substantial full charge by determining a change in sign of the second derivative of said current characteristic variation with time; and controlling the supply of electrical energy of the battery on the basis of the so-determined occurrence.
Claim 8
Independent Claim
161 words
A method of rapidly and efficiently charging a battery of the type in which the current characteristic drawn by the battery during charging varies with the state of charge of the battery and in which the current characteristic varies with time during charging to exhibit an inflection point just prior to the battery attaining substantial full charge by determining a change in sign of the second derivative of said current characteristic variation with time, the method comprising the steps of: supplying electrical energy to the battery for charging thereof; measuring said current characteristic drawn by the battery during charging; analyzing the variation of said monitored current characteristic with time to determine the occurrence of the inflection point exhibited just prior to the battery attaining substantial full charge by determining a change in sign of the second derivative of said current characteristic variation with time; and controlling the supply of electrical energy of the battery on the basis of the so-determined occurrence.
Claim 9
Independent Claim
174 words
A method of rapidly and efficiently charging a battery of the type in which the current characteristic drawn by the battery during charging varies with the state of charge of the battery and in which the current characteristic varies with time during charing to exhibit an inflection point prior to the battery attaining substantial full charge, the inflection point characterized by a change in sign of the second derivative of the current characteristic variation with time from a negative to a positive value, the method comprising the steps of: supplying electrical energy to the battery for charging thereof; monitoring said current characteristic drawn by the battery during charging; analyzing the variation of said monitored current characteristic with time to determine the occurrence of the inflection point exhibited prior to the battery attaining substantial full charge by determining a change in sign of the second derivative of said current characteristic variation from a negative to a positive value; and controlling the supply of electrical energy of the battery on the basis of the so-determined occurrence.
Claim 10
Independent Claim
174 words
A method of rapidly and efficiently charging a battery of the type in which the current characteristic drawn by the battery during charging varies with the state of charge of the battery and in which the current characteristic varies with time during charing to exhibit an inflection point prior to the battery attaining substantial full charge, the inflection point characterized by a change in sign of the second derivative of the current characteristic variation with time from a negative to a positive value, the method comprising the steps of: supplying electrical energy to the battery for charging thereof; monitoring said current characteristic drawn by the battery during charging; analyzing the variation of said monitored current characteristic with time to determine the occurrence of the inflection point exhibited prior to the battery attaining substantial full charge by determining a change in sign of the second derivative of said current characteristic variation from a negative to a positive value; and controlling the supply of electrical energy of the battery on the basis of the so-determined occurrence.
Claim 11
Independent Claim
119 words
A method of rapidly and efficiently charging a battery of the type having a characteristic associated therewith that varies with the state of charge of the battery and in which the variation of the characteristic with time during charging exhibits an inflection point prior to the battery attaining substantial full charge and another inflection point that precedes the first-mentioned inflection point, the method comprising the steps of: supplying electrical energy to the battery for charging thereof; monitoring said characteristic of the battery during charging; analyzing the variation of said monitored characteristic with time to determine the occurrence of the first-mentioned inflection point; and controlling the supply of electrical energy to the battery on the basis of the so-determined occurrence.
Claim 12
Independent Claim
119 words
A method of rapidly and efficiently charging a battery of the type having a characteristic associated therewith that varies with the state of charge of the battery and in which the variation of the characteristic with time during charging exhibits an inflection point prior to the battery attaining substantial full charge and another inflection point that precedes the first-mentioned inflection point, the method comprising the steps of: supplying electrical energy to the battery for charging thereof; monitoring said characteristic of the battery during charging; analyzing the variation of said monitored characteristic with time to determine the occurrence of the first-mentioned inflection point; and controlling the supply of electrical energy to the battery on the basis of the so-determined occurrence.
Claim 13
Independent Claim
114 words
A method of rapidly and efficiently charging a battery of the type having a characteristic associated therewith that varies with the state of charge of the battery and in which the variation of the characteristic with time during charging exhibits a first and a succeeding inflection point prior to the battery attaining a predetermined charge level, the method comprising the steps of: supplying electrical energy to the battery for charging thereof; monitoring said characteristic of the battery during charging; analyzing the variation of said monitored characteristic with time to determine the occurrence of the succeeding inflection point; and controlling the supply of electrical energy to the battery on the basis of the so-determined occurrence.
Claim 14
Independent Claim
114 words
A method of rapidly and efficiently charging a battery of the type having a characteristic associated therewith that varies with the state of charge of the battery and in which the variation of the characteristic with time during charging exhibits a first and a succeeding inflection point prior to the battery attaining a predetermined charge level, the method comprising the steps of: supplying electrical energy to the battery for charging thereof; monitoring said characteristic of the battery during charging; analyzing the variation of said monitored characteristic with time to determine the occurrence of the succeeding inflection point; and controlling the supply of electrical energy to the battery on the basis of the so-determined occurrence.
Claim 15
Independent Claim
131 words
A method of rapidly and efficiently charging a battery of the type having a characteristic associated therewith that varies with the state of charge of the battery and in which the variation of the characteristic with time during charging exhibits an opposed pair of inflection points prior to the battery attaining substantial full charge, the method comprising the steps of: supplying electrical energy to the battery for charging thereof; monitoring said characteristic of the battery during charging; analyzing the variation of said monitored characteristic with time to determine the occurrence of the last inflection point of the opposed pair of inflection points; and controlling the supply of electrical energy to the battery on the basis of the so-determined occurrence of the last inflection point of the opposed pair of inflection points.
Claim 16
Independent Claim
131 words
A method of rapidly and efficiently charging a battery of the type having a characteristic associated therewith that varies with the state of charge of the battery and in which the variation of the characteristic with time during charging exhibits an opposed pair of inflection points prior to the battery attaining substantial full charge, the method comprising the steps of: supplying electrical energy to the battery for charging thereof; monitoring said characteristic of the battery during charging; analyzing the variation of said monitored characteristic with time to determine the occurrence of the last inflection point of the opposed pair of inflection points; and controlling the supply of electrical energy to the battery on the basis of the so-determined occurrence of the last inflection point of the opposed pair of inflection points.
Claim 17
Independent Claim
117 words
A method of rapidly and efficiently charging a battery of the type having a characteristic associated therewith that varies with the state of charge of the battery and in which the variation of the characteristic with time during charging exhibits a plurality of inflection points prior to the battery attaining substantial full charge, the method comprising the steps of: supplying electrical energy to the battery for charging thereof; monitoring said characteristic of the battery during charging; analyzing the variation of said monitored characteristic with time to determine the occurrence of a second inflection point of the plurality of inflection points; and controlling the supply of electrical energy to the battery on the basis of the so-determined occurrence.
Claim 18
Independent Claim
117 words
A method of rapidly and efficiently charging a battery of the type having a characteristic associated therewith that varies with the state of charge of the battery and in which the variation of the characteristic with time during charging exhibits a plurality of inflection points prior to the battery attaining substantial full charge, the method comprising the steps of: supplying electrical energy to the battery for charging thereof; monitoring said characteristic of the battery during charging; analyzing the variation of said monitored characteristic with time to determine the occurrence of a second inflection point of the plurality of inflection points; and controlling the supply of electrical energy to the battery on the basis of the so-determined occurrence.
Claim 19
Independent Claim
126 words
A method of rapidly and efficiently charging a battery of the type having a characteristic associated therewith that varies with the state of charge of the battery and in which the variation of the characteristic with time during charging exhibits an inflection point prior to the battery attaining substantial full charge and another inflection point that precedes the first-mentioned inflection point, the method comprising the steps of: supplying electrical energy to the battery for charging thereof; monitoring said characteristic of the battery during charging; analyzing the variation of said monitored characteristic with time to determine the occurrence of a sequence of the preceding and the first-mentioned inflection points; and controlling the supply of electrical energy to the battery on the basis of the so-determined sequential occurrence.
Claim 20
Independent Claim
126 words
A method of rapidly and efficiently charging a battery of the type having a characteristic associated therewith that varies with the state of charge of the battery and in which the variation of the characteristic with time during charging exhibits an inflection point prior to the battery attaining substantial full charge and another inflection point that precedes the first-mentioned inflection point, the method comprising the steps of: supplying electrical energy to the battery for charging thereof; monitoring said characteristic of the battery during charging; analyzing the variation of said monitored characteristic with time to determine the occurrence of a sequence of the preceding and the first-mentioned inflection points; and controlling the supply of electrical energy to the battery on the basis of the so-determined sequential occurrence.
Claim 21
Independent Claim
120 words
A method of rapidly and efficiently charging a battery of the type having a characteristic associated therewith that varies with the state of charge of the battery and in which the variation of the characteristic with time during charging exhibits a first and a succeeding inflection point prior to battery attaining a predetermined charge level, the method comprising the steps of: supplying electrical energy to the battery for charging thereof; monitoring said characteristic of the battery during charging; analyzing the variation of said monitored characteristic with time to determine the occurrence of a sequence of the first and the succeeding inflection points; and controlling the supply of electrical energy to the battery on the basis of the so-determined sequential occurrence.
Claim 22
Independent Claim
120 words
A method of rapidly and efficiently charging a battery of the type having a characteristic associated therewith that varies with the state of charge of the battery and in which the variation of the characteristic with time during charging exhibits a first and a succeeding inflection point prior to battery attaining a predetermined charge level, the method comprising the steps of: supplying electrical energy to the battery for charging thereof; monitoring said characteristic of the battery during charging; analyzing the variation of said monitored characteristic with time to determine the occurrence of a sequence of the first and the succeeding inflection points; and controlling the supply of electrical energy to the battery on the basis of the so-determined sequential occurrence.
Claim 23
Independent Claim
117 words
A method of rapidly and efficiently charging a battery of the type having a characteristic associated therewith that varies with the state of charge of the battery and in which the variation of the characteristic with time during charging exhibits an opposed pair of inflection points prior to battery attaining substantial full charge, the method comprising the steps of: supplying electrical energy to the battery for charging thereof; monitoring said characteristic of the battery during charging; analyzing the variation of said monitored characteristic with time to determine the occurrence of a sequence of the opposed pair of inflection points; and controlling the supply of electrical energy to the battery on the basis of the so-determined sequential occurrence.
Claim 24
Independent Claim
117 words
A method of rapidly and efficiently charging a battery of the type having a characteristic associated therewith that varies with the state of charge of the battery and in which the variation of the characteristic with time during charging exhibits an opposed pair of inflection points prior to battery attaining substantial full charge, the method comprising the steps of: supplying electrical energy to the battery for charging thereof; monitoring said characteristic of the battery during charging; analyzing the variation of said monitored characteristic with time to determine the occurrence of a sequence of the opposed pair of inflection points; and controlling the supply of electrical energy to the battery on the basis of the so-determined sequential occurrence.
Claim 25
Independent Claim
177 words
A method for rapidly and efficiently charging a battery of the type having a voltage characteristic associated therewith that varies with the state of charge of the battery and in which the variation of the voltage characteristic with time during charging exhibits inflection points prior to the battery attaining substantial full charge in which each inflection point is characterized by a change in sign of the second derivative of the voltage characteristic, the method comprising the steps of: supplying electrical energy to the battery for charging thereof; monitoring said voltage characteristic of the battery during charging; analyzing the variation of said monitored voltage characteristic with time to determine the occurrence of a sequence of inflection points characterized by a change in the sign of the second derivative of said voltage characteristic from a negative to a positive value and a succeeding change in sign of the second derivative of said voltage characteristic from a positive to a negative value; and controlling the supply of electrical energy to the battery on the basis of the so-determined sequential occurrence.
Claim 26
Independent Claim
177 words
A method for rapidly and efficiently charging a battery of the type having a voltage characteristic associated therewith that varies with the state of charge of the battery and in which the variation of the voltage characteristic with time during charging exhibits inflection points prior to the battery attaining substantial full charge in which each inflection point is characterized by a change in sign of the second derivative of the voltage characteristic, the method comprising the steps of: supplying electrical energy to the battery for charging thereof; monitoring said voltage characteristic of the battery during charging; analyzing the variation of said monitored voltage characteristic with time to determine the occurrence of a sequence of inflection points characterized by a change in the sign of the second derivative of said voltage characteristic from a negative to a positive value and a succeeding change in sign of the second derivative of said voltage characteristic from a positive to a negative value; and controlling the supply of electrical energy to the battery on the basis of the so-determined sequential occurrence.
Claim 27
Independent Claim
180 words
A method of rapidly and efficiently charging a battery of the type in which the current characteristic drawn by the battery during charging varies with the state of charge of the battery and in which the variation of the current characteristic with time during charging exhibits inflection points prior to the battery attaining substantial full charge in which each inflection point is characterized by a change in sign of the second derivative of the current characteristic, the method comprising the steps of: supplying electrical energy to the battery for charging thereof; monitoring said current characteristic of the battery during charging; analyzing the variation of said monitored current characteristic with time to determine the occurrence of a sequence of inflection points characterized by a change in sign of the second derivative of said current characteristic from a positive to a negative value and a succeeding change in sign of the second derivative of said current characteristic from a negative to a positive value; and controlling the supply of electrical energy to the battery on the basis of the so-determined sequential occurrence.
Claim 28
Independent Claim
180 words
A method of rapidly and efficiently charging a battery of the type in which the current characteristic drawn by the battery during charging varies with the state of charge of the battery and in which the variation of the current characteristic with time during charging exhibits inflection points prior to the battery attaining substantial full charge in which each inflection point is characterized by a change in sign of the second derivative of the current characteristic, the method comprising the steps of: supplying electrical energy to the battery for charging thereof; monitoring said current characteristic of the battery during charging; analyzing the variation of said monitored current characteristic with time to determine the occurrence of a sequence of inflection points characterized by a change in sign of the second derivative of said current characteristic from a positive to a negative value and a succeeding change in sign of the second derivative of said current characteristic from a negative to a positive value; and controlling the supply of electrical energy to the battery on the basis of the so-determined sequential occurrence.
Claim 29
Independent Claim
122 words
A method of rapidly and efficiently charging a nickel-cadmium battery in which the voltage varies with the state of charge of the battery and in which the variation of the voltage with time during charging exhibits an inflection point prior to the battery attaining substantial full charge and another inflection point that precedes the first-mentioned inflection point, the method comprising the steps of: supplying electrical energy to the battery for charging thereof; monitoring said voltage characteristic of the battery during charging; analyzing the variation of said monitored voltage characteristic with time to determine the occurrence of the first-mentioned inflection point; and controlling the supply of electrical energy to the battery on the basis of the so-determined occurrence of the first-mentioned inflection point.
Claim 30
Independent Claim
122 words
A method of rapidly and efficiently charging a nickel-cadmium battery in which the voltage varies with the state of charge of the battery and in which the variation of the voltage with time during charging exhibits an inflection point prior to the battery attaining substantial full charge and another inflection point that precedes the first-mentioned inflection point, the method comprising the steps of: supplying electrical energy to the battery for charging thereof; monitoring said voltage characteristic of the battery during charging; analyzing the variation of said monitored voltage characteristic with time to determine the occurrence of the first-mentioned inflection point; and controlling the supply of electrical energy to the battery on the basis of the so-determined occurrence of the first-mentioned inflection point.
Claim 31
Independent Claim
165 words
A method of rapidly and efficiently charging a battery of the type having a characteristic associated therewith that varies with the state of charge of the battery and in which the variation of the characteristic with time during charging exhibits an inflection point just prior to the battery attaining substantial full charge, the method comprising the steps of: supplying electrical energy to the battery for charging thereof; monitoring said characteristic of the battery during charging; analyzing the variation of said characteristic with time to determine the occurrence of said inflection point that occurs just prior to the battery attaining substantial full charge and to determine the occurrence of a predetermined variation of said characteristic that comprises a control indicium for reducing the supply of electrical energy to the battery; and reducing the supply of electrical energy to the battery upon the first occurrence of a one of: (a) said inflection point, (b) a control indicium for reducing the supply of electrical energy to the battery.
Claim 32
Independent Claim
165 words
A method of rapidly and efficiently charging a battery of the type having a characteristic associated therewith that varies with the state of charge of the battery and in which the variation of the characteristic with time during charging exhibits an inflection point just prior to the battery attaining substantial full charge, the method comprising the steps of: supplying electrical energy to the battery for charging thereof; monitoring said characteristic of the battery during charging; analyzing the variation of said characteristic with time to determine the occurrence of said inflection point that occurs just prior to the battery attaining substantial full charge and to determine the occurrence of a predetermined variation of said characteristic that comprises a control indicium for reducing the supply of electrical energy to the battery; and reducing the supply of electrical energy to the battery upon the first occurrence of a one of: (a) said inflection point, (b) a control indicium for reducing the supply of electrical energy to the battery.
Claim 33
Independent Claim
170 words
A method of rapidly and efficiently charging a battery of the type having a characteristic associated therewith that varies with the state of charge of the battery and in which the variation of the characteristic with time during charging exhibits an inflection point just prior to the battery attaining a predetermined charge level, and at least one other inflection point that precedes said first-mentioned inflection point, the method comprising the steps of: supplying electrical energy to the battery for charging thereof; monitoring said characteristic of the battery during charging; analyzing the variation of said characteristic with time to determine the occurrence of said first-mentioned inflection point and to determine the occurrence of a predetermined variation of said characteristic that comprises a control indicium for reducing the supply of electrical energy to the battery; and reducing the supply of electrical energy to the battery upon the first occurrence of a one of: (a) said first-mentioned inflection point, (b) a control indicium for reducing the supply of electrical energy to the battery.
Claim 34
Independent Claim
170 words
A method of rapidly and efficiently charging a battery of the type having a characteristic associated therewith that varies with the state of charge of the battery and in which the variation of the characteristic with time during charging exhibits an inflection point just prior to the battery attaining a predetermined charge level, and at least one other inflection point that precedes said first-mentioned inflection point, the method comprising the steps of: supplying electrical energy to the battery for charging thereof; monitoring said characteristic of the battery during charging; analyzing the variation of said characteristic with time to determine the occurrence of said first-mentioned inflection point and to determine the occurrence of a predetermined variation of said characteristic that comprises a control indicium for reducing the supply of electrical energy to the battery; and reducing the supply of electrical energy to the battery upon the first occurrence of a one of: (a) said first-mentioned inflection point, (b) a control indicium for reducing the supply of electrical energy to the battery.
Claim 35
Independent Claim
174 words
A method of rapidly and efficiently charging a battery of the type having a characteristic associated therewith that varies with the state of charge of the battery and in which the variation of the characteristic with time during charging exhibits a sequence of a first and a successive inflection point prior to the battery attaining substantial full charge, the method comprising the steps of: supplying electrical energy to the battery for charging thereof; monitoring said characteristic of the battery during charging; analyzing the variation of said characteristic with time to determine the occurrence of said sequence of a first and a successive inflection point and to determine the occurrence of a predetermined variation of said characteristic that comprises a control indicium for reducing the supply of electrical energy to the battery; and reducing the supply of electrical energy to the battery upon the first occurrence of a one of: (a) said sequence of a first and a successive inflection point, (b) a control indicium for reducing the supply of electrical energy to the battery.
Claim 36
Independent Claim
174 words
A method of rapidly and efficiently charging a battery of the type having a characteristic associated therewith that varies with the state of charge of the battery and in which the variation of the characteristic with time during charging exhibits a sequence of a first and a successive inflection point prior to the battery attaining substantial full charge, the method comprising the steps of: supplying electrical energy to the battery for charging thereof; monitoring said characteristic of the battery during charging; analyzing the variation of said characteristic with time to determine the occurrence of said sequence of a first and a successive inflection point and to determine the occurrence of a predetermined variation of said characteristic that comprises a control indicium for reducing the supply of electrical energy to the battery; and reducing the supply of electrical energy to the battery upon the first occurrence of a one of: (a) said sequence of a first and a successive inflection point, (b) a control indicium for reducing the supply of electrical energy to the battery.
Claim 37
Independent Claim
163 words
A method of rapidly and efficiently charging a nickel-cadmium battery of the type having a characteristic associated therewith that varies with the state of charge of the battery and in which the variation of the characteristic with time during charging exhibits an opposed pair of inflection points prior to the battery attaining substantial full charge, the method comprising the steps of: supplying electrical energy to the battery for charging thereof; monitoring said characteristic of the battery during charging; analyzing the variation of said characteristic with time to determine the occurrence of said opposed pair of inflection points and to determine the occurrence of a predetermined variation of said characteristic that comprises a control indicium for reducing the supply of electrical energy to the battery; and reducing the supply of electrical energy to the battery upon the first occurrence of a one of: (a) said opposed pair of inflection points, (b) a control indicium for reducing the supply of electrical energy to the battery.
Claim 38
Independent Claim
163 words
A method of rapidly and efficiently charging a nickel-cadmium battery of the type having a characteristic associated therewith that varies with the state of charge of the battery and in which the variation of the characteristic with time during charging exhibits an opposed pair of inflection points prior to the battery attaining substantial full charge, the method comprising the steps of: supplying electrical energy to the battery for charging thereof; monitoring said characteristic of the battery during charging; analyzing the variation of said characteristic with time to determine the occurrence of said opposed pair of inflection points and to determine the occurrence of a predetermined variation of said characteristic that comprises a control indicium for reducing the supply of electrical energy to the battery; and reducing the supply of electrical energy to the battery upon the first occurrence of a one of: (a) said opposed pair of inflection points, (b) a control indicium for reducing the supply of electrical energy to the battery.
Claim 39
Dependent Claim
72 words
The method claimed in claim 16, 17, 18, or 19, wherein said control indicium for reducing the supply of electrical energy to the battery comprises the occurrence of a one of: the variation of said characteristic ceasing to be monotonic; the value of said characteristic decreasing to a predetermined limit; the value of said characteristic increasing to a predetermined limit; the slope of the variation of said characteristic attaining a predetermined limit.
Claim 40
Dependent Claim
35 words
The method claimed in claim 16, 17, 18, or 19, 20, wherein said reducing step further comprises: reducing the supply of electrical energy to the battery upon the passage of a predetermined amount of time.
Claim 41
Independent Claim
25 words
The method claimed in claims 1, 6, 10, 15, 18, or 19, whrein said monitoring step further comprises: monitoring an electrical characteristic of the battery.
Claim 42
Dependent Claim
16 words
The method claimed in claim 22, wherein the monitoring step further comprises: measuring the battery voltage.
Claim 43
Dependent Claim
21 words
The method claimed in claim 22, wherein the monitoring step further comprises: measuring the current drawn by the battery during charging.
Claim 44
Dependent Claim
27 words
The method claimed in claim 24, wherein the monitoring step further comprises: measuring the current drawn by the battery during charging at a constant value of voltage.
Claim 45
Dependent Claim
27 words
The method claimed in claim 1, 2, 3, 6, 7, or 15, wherein said controlling step further comprises: discontinuing the supply of electrical energy to the battery.
Claim 46
Dependent Claim
37 words
The method claimed in claim 1, 2, 3, 6, 7, or 15, wherein said controlling step further comprises: reducing the rate of supply of electrical energy to the battery to a predetermined rate to prevent self-discharge thereof.
Claim 47
Dependent Claim
23 words
The method claimed in claim 1, 5, 6, 7, 9, 10, 13, or 14, in which the battery is of the nickel-cadmium type.
Claim 48
Dependent Claim
118 words
An apparaus for charging a battery of the type having a characteristic associated therewith that varies with the state of charge of the battery and in which the variation of the characteristic with time during charging exhibits a plurality of inflection points prior to the battery attaining substantial full charge, said apparatus comprising: means for supplying electrical energy to the battery for charging thereof; and means connected to said supply means for monitoring the characteristic during charging, for analyzing the so-monitored characteristic with time to determine the occurrence of the last inflection point exhibited prior to the battery attaining substantial full charge, and for controlling said supply means to control the supply of electrical energy to the battery.
Claim 49
Dependent Claim
118 words
An apparaus for charging a battery of the type having a characteristic associated therewith that varies with the state of charge of the battery and in which the variation of the characteristic with time during charging exhibits a plurality of inflection points prior to the battery attaining substantial full charge, said apparatus comprising: means for supplying electrical energy to the battery for charging thereof; and means connected to said supply means for monitoring the characteristic during charging, for analyzing the so-monitored characteristic with time to determine the occurrence of the last inflection point exhibited prior to the battery attaining substantial full charge, and for controlling said supply means to control the supply of electrical energy to the battery.
Claim 50
Independent Claim
158 words
An apparatus for charging a battery of the type having a voltage characteristic associated therewith that varies with the state of charge of the battery and in which the variation of the voltage characteristic with time during charging exhibits an inflection point just prior to the battery attaining substantial full charge, the inflection point characterized by a change in sign of the second derivative of the voltage characteristic variation with time, said apparatus comprising: means for supplying electrical energy to the battery for charging thereof; and means connected to said supply means for monitoring the voltage characteristic during charging, for analyzing the so-monitored voltage characteristic with time to determine the occurrence of the inflection point exhibited just prior to the battery attaining substantial full charge by determining a change in sign of the second derivative of the voltage characteristic variation with time, and for controlling said supply means to control the supply of electrical energy to the battery.
Claim 51
Independent Claim
158 words
An apparatus for charging a battery of the type having a voltage characteristic associated therewith that varies with the state of charge of the battery and in which the variation of the voltage characteristic with time during charging exhibits an inflection point just prior to the battery attaining substantial full charge, the inflection point characterized by a change in sign of the second derivative of the voltage characteristic variation with time, said apparatus comprising: means for supplying electrical energy to the battery for charging thereof; and means connected to said supply means for monitoring the voltage characteristic during charging, for analyzing the so-monitored voltage characteristic with time to determine the occurrence of the inflection point exhibited just prior to the battery attaining substantial full charge by determining a change in sign of the second derivative of the voltage characteristic variation with time, and for controlling said supply means to control the supply of electrical energy to the battery.
Claim 52
Independent Claim
170 words
An apparatus for charging a battery of the type having a voltage characteristic associated therewith that varies with the state of charge of the battery and in which the variation of the voltage characteristic with time during charging exhibits an inflection point prior to the battery attaining substantial full charge, the inflection point characterized by a change in sign of the second derivative of the voltage characteristic variation with time from a positive to a negative value, said apparatus comprising: means for supplying electrical energy to the battery for charging thereof; and means connected to said supply means for monitoring the voltage characteristic during charging, for analyzing the so-monitored voltage characteristic with time to determine the occurrence of the inflection point exhibited prior to the battery attaining substantial full charge by determining a change in sign from a positive to a negative value of the second derivative of the voltage characteristic variation with time, and for controlling said supply means to control the supply of electrical energy to the battery.
Claim 53
Independent Claim
170 words
An apparatus for charging a battery of the type having a voltage characteristic associated therewith that varies with the state of charge of the battery and in which the variation of the voltage characteristic with time during charging exhibits an inflection point prior to the battery attaining substantial full charge, the inflection point characterized by a change in sign of the second derivative of the voltage characteristic variation with time from a positive to a negative value, said apparatus comprising: means for supplying electrical energy to the battery for charging thereof; and means connected to said supply means for monitoring the voltage characteristic during charging, for analyzing the so-monitored voltage characteristic with time to determine the occurrence of the inflection point exhibited prior to the battery attaining substantial full charge by determining a change in sign from a positive to a negative value of the second derivative of the voltage characteristic variation with time, and for controlling said supply means to control the supply of electrical energy to the battery.
Claim 54
Independent Claim
155 words
An apparatus for charging a battery of the type having a current characteristic associated therewith that varies with the state of charge of the battery and in which the variation of the current characteristic with time during charging exhibits an inflection point just prior to the battery attaining substantial full charge, the inflection point characterized by a change in sign of the second derivative of the current variation with time, said apparatus comprising: means for supplying electrical energy to the battery for charging thereof; and means connected to said supply means for monitoring the current characteristic during charging, for analyzing the so-monitored characteristic with time to determine the occurrence of the inflection point exhibited just prior to the battery attaining substantial full charge by determining a change in sign of the second derivative of the current characteristic with time, and for controlling said supply means to control the supply of electrical energy to the battery.
Claim 55
Independent Claim
155 words
An apparatus for charging a battery of the type having a current characteristic associated therewith that varies with the state of charge of the battery and in which the variation of the current characteristic with time during charging exhibits an inflection point just prior to the battery attaining substantial full charge, the inflection point characterized by a change in sign of the second derivative of the current variation with time, said apparatus comprising: means for supplying electrical energy to the battery for charging thereof; and means connected to said supply means for monitoring the current characteristic during charging, for analyzing the so-monitored characteristic with time to determine the occurrence of the inflection point exhibited just prior to the battery attaining substantial full charge by determining a change in sign of the second derivative of the current characteristic with time, and for controlling said supply means to control the supply of electrical energy to the battery.
Claim 56
Independent Claim
168 words
An apparatus for charging a battery of the type having a current characteristic associated therewith that varies with the state of charge of the battery and in which the variation of the current characteristic with time during charging exhibits an inflection point prior to the battery attaining substantial full charge, the inflection point characterized by a change in the sign of the second derivative of the current variation with time from a negative to a positive value, said apparatus comprising: means for supplying electrical energy to the battery for charging thereof; and means connected to said supply means for monitoring the current characteristic during charging, for analyzing the so-monitored characteristic with time to determine the occurrence of the inflection point exhibited prior to the battery attaining substantial full charge by determining a change in sign from a negative to a positive value of the second derivative of the current characteristic with time, and for controlling said supply means to control the supply of electrical energy to the battery.
Claim 57
Independent Claim
168 words
An apparatus for charging a battery of the type having a current characteristic associated therewith that varies with the state of charge of the battery and in which the variation of the current characteristic with time during charging exhibits an inflection point prior to the battery attaining substantial full charge, the inflection point characterized by a change in the sign of the second derivative of the current variation with time from a negative to a positive value, said apparatus comprising: means for supplying electrical energy to the battery for charging thereof; and means connected to said supply means for monitoring the current characteristic during charging, for analyzing the so-monitored characteristic with time to determine the occurrence of the inflection point exhibited prior to the battery attaining substantial full charge by determining a change in sign from a negative to a positive value of the second derivative of the current characteristic with time, and for controlling said supply means to control the supply of electrical energy to the battery.
Claim 58
Independent Claim
117 words
An apparatus for charging a battery of the type having a characteristic associated therewith that varies with the state of charge of the battery and in which the variation of the characteristic with time during charging exhibits an inflection point prior to the battery attaining substantial full charge and another inflection point that precedes the first-mentioned inflection point, said apparatus comprising: means for supplying electrical energy to the battery for charging thereof; and means connected to said supply means for monitoring the characteristic during charging, for analyzing the so-monitored characteristic with time to determine the occurrence of the first-mentioned inflection point, and for controlling said supply means to control the supply of electrical energy to the battery.
Claim 59
Independent Claim
117 words
An apparatus for charging a battery of the type having a characteristic associated therewith that varies with the state of charge of the battery and in which the variation of the characteristic with time during charging exhibits an inflection point prior to the battery attaining substantial full charge and another inflection point that precedes the first-mentioned inflection point, said apparatus comprising: means for supplying electrical energy to the battery for charging thereof; and means connected to said supply means for monitoring the characteristic during charging, for analyzing the so-monitored characteristic with time to determine the occurrence of the first-mentioned inflection point, and for controlling said supply means to control the supply of electrical energy to the battery.
Claim 60
Independent Claim
111 words
An apparatus for charging a battery of the type having a characteristic associated therewith that varies with the state of charge of the battery and in which the variation of the characteristic with time during charging exhibits a first and a succeeding inflection point prior to the battery attaining substantial full charge, said apparatus comprising: means for supplying electrical energy to the battery for charging thereof; and means connected to said supply means for monitoring the characteristic during charging, for analyzing the so-monitored characteristic with time to determine the occurrence of the succeeding inflection point, and for controlling said supply means to control the supply of electrical energy to the battery.
Claim 61
Independent Claim
111 words
An apparatus for charging a battery of the type having a characteristic associated therewith that varies with the state of charge of the battery and in which the variation of the characteristic with time during charging exhibits a first and a succeeding inflection point prior to the battery attaining substantial full charge, said apparatus comprising: means for supplying electrical energy to the battery for charging thereof; and means connected to said supply means for monitoring the characteristic during charging, for analyzing the so-monitored characteristic with time to determine the occurrence of the succeeding inflection point, and for controlling said supply means to control the supply of electrical energy to the battery.
Claim 62
Independent Claim
125 words
An apparatus for charging a battery of the type having a characteristic associated therewith that varies with the state of charge of the battery and in which the variation of the characteristic with time during charging exhibits an opposed pair of inflection points prior to the battery attaining a predetermined charge level, said apparatus comprising: means for supplying electrical energy to the battery for charging thereof; means connected to said supply means for monitoring the characteristic during charging; means connected to said monitoring means for analyzing the so-monitored characteristic with time to determine the occurrence of the last inflection point of the opposed pair of inflection points; and means connected to said supply means for controlling said supply means in response to said analyzing means.
Claim 63
Independent Claim
125 words
An apparatus for charging a battery of the type having a characteristic associated therewith that varies with the state of charge of the battery and in which the variation of the characteristic with time during charging exhibits an opposed pair of inflection points prior to the battery attaining a predetermined charge level, said apparatus comprising: means for supplying electrical energy to the battery for charging thereof; means connected to said supply means for monitoring the characteristic during charging; means connected to said monitoring means for analyzing the so-monitored characteristic with time to determine the occurrence of the last inflection point of the opposed pair of inflection points; and means connected to said supply means for controlling said supply means in response to said analyzing means.
Claim 64
Independent Claim
122 words
An apparatus for charging a battery of the type having a characteristic associated therewith that varies with the state of charge of the battery and in which the variation of the characteristic with time during charging exhibits a plurality of inflection points prior to the battery attaining substantial full charge, said apparatus comprising: means for supplying electrical energy to the battery for charging thereof; means connected to said supply means for monitoring the characteristic during charging; means connected to said monitoring means for analyzing the so-monitored characteristic with time to determine the occurrence of a second inflection point of the plurality of inflection points; and means connected to said supply means for controlling said supply means in response to said analyzing means.
Claim 65
Independent Claim
122 words
An apparatus for charging a battery of the type having a characteristic associated therewith that varies with the state of charge of the battery and in which the variation of the characteristic with time during charging exhibits a plurality of inflection points prior to the battery attaining substantial full charge, said apparatus comprising: means for supplying electrical energy to the battery for charging thereof; means connected to said supply means for monitoring the characteristic during charging; means connected to said monitoring means for analyzing the so-monitored characteristic with time to determine the occurrence of a second inflection point of the plurality of inflection points; and means connected to said supply means for controlling said supply means in response to said analyzing means.
Claim 66
Independent Claim
122 words
An apparatus for charging a battery of the type having a characteristic associated therewith that varies with the state of charge of the battery and in which the variation of the characteristic with time during charging exhibits an inflection point prior to the battery attaining substantial full charge and another inflection point that precedes the first-mentioned inflection point, said apparatus comprising: means for supplying electrical energy to the battery for charging thereof; and means connected to said supply means for monitoring the characteristic during charging, for analyzing the so-monitored characteristic with time to determine the occurrence of sequence of the preceding and the first-mentioned inflection points, and for controlling said supply means to control the supply of electrical energy to the battery.
Claim 67
Independent Claim
122 words
An apparatus for charging a battery of the type having a characteristic associated therewith that varies with the state of charge of the battery and in which the variation of the characteristic with time during charging exhibits an inflection point prior to the battery attaining substantial full charge and another inflection point that precedes the first-mentioned inflection point, said apparatus comprising: means for supplying electrical energy to the battery for charging thereof; and means connected to said supply means for monitoring the characteristic during charging, for analyzing the so-monitored characteristic with time to determine the occurrence of sequence of the preceding and the first-mentioned inflection points, and for controlling said supply means to control the supply of electrical energy to the battery.
Claim 68
Independent Claim
124 words
An apparatus for charging a battery of the type having a characteristic associated therewith that varies with the state of charge of the battery and in which the variation of the characteristic with time during charging exhibits a first and a succeeding inflection point prior to battery attaining a predetermined charge level, said apparatus comprising: means for supplying electrical energy to the battery for charging thereof; means connected to said supply means for monitoring the characteristic during charging; means connected to said monitoring means for analyzing the so-monitored characteristic with time to determine the occurrence of a sequence of the first and the succeeding inflection points; and means connected to said supply means for controlling said supply means in response to said analyzing means.
Claim 69
Independent Claim
124 words
An apparatus for charging a battery of the type having a characteristic associated therewith that varies with the state of charge of the battery and in which the variation of the characteristic with time during charging exhibits a first and a succeeding inflection point prior to battery attaining a predetermined charge level, said apparatus comprising: means for supplying electrical energy to the battery for charging thereof; means connected to said supply means for monitoring the characteristic during charging; means connected to said monitoring means for analyzing the so-monitored characteristic with time to determine the occurrence of a sequence of the first and the succeeding inflection points; and means connected to said supply means for controlling said supply means in response to said analyzing means.
Claim 70
Independent Claim
121 words
An apparatus for charging a battery of the type having a characteristic associated therewith that varies with the state of charge of the battery and in which the variation of the characteristic with time during charging exhibits an opposed pair of inflection points prior to battery attaining substantial full charge, said apparatus comprising: means for supplying electrical energy to the battery for charging thereof; means connected to said supply means for monitoring the characteristic during charging; means connected to said monitoring means for analyzing the so-monitored characteristic with time to determine the occurrence of a sequence of the opposed pair of inflection points; and means connected to said supply means for controlling said supply means in response to said analyzing means.
Claim 71
Independent Claim
121 words
An apparatus for charging a battery of the type having a characteristic associated therewith that varies with the state of charge of the battery and in which the variation of the characteristic with time during charging exhibits an opposed pair of inflection points prior to battery attaining substantial full charge, said apparatus comprising: means for supplying electrical energy to the battery for charging thereof; means connected to said supply means for monitoring the characteristic during charging; means connected to said monitoring means for analyzing the so-monitored characteristic with time to determine the occurrence of a sequence of the opposed pair of inflection points; and means connected to said supply means for controlling said supply means in response to said analyzing means.
Claim 72
Independent Claim
171 words
An apparatus for charging a battery of the type having a voltage characteristic associated therewith that varies with the state of charge of the battery and in which the variation of the characteristic with time during charging exhibits inflection points prior to the battery attaining substantial full charge in which each inflection point is characterized by a change in sign of the second derivative of the voltage characteristic, said apparatus comprising: means for supplying electrical energy to the battery for charging thereof; and means connected to said supply means for monitoring the voltage characteristic during charging, for analyzing the so-monitored characteristic with time to determine the occurrence of a sequence inflection points characterized by a change in the sign of the second derivative of the voltage characteristic from a negative to a positive value and a succeeding change in sign of the second derivative of the voltage characteristic from a positive to a negative value, and for controlling said supply means to control the supply of electrical energy to the battery.
Claim 73
Independent Claim
171 words
An apparatus for charging a battery of the type having a voltage characteristic associated therewith that varies with the state of charge of the battery and in which the variation of the characteristic with time during charging exhibits inflection points prior to the battery attaining substantial full charge in which each inflection point is characterized by a change in sign of the second derivative of the voltage characteristic, said apparatus comprising: means for supplying electrical energy to the battery for charging thereof; and means connected to said supply means for monitoring the voltage characteristic during charging, for analyzing the so-monitored characteristic with time to determine the occurrence of a sequence inflection points characterized by a change in the sign of the second derivative of the voltage characteristic from a negative to a positive value and a succeeding change in sign of the second derivative of the voltage characteristic from a positive to a negative value, and for controlling said supply means to control the supply of electrical energy to the battery.
Claim 74
Independent Claim
171 words
An apparatus for charging a battery of the type having a current characteristic associated therewith that varies with the state of charge of the battery and in which the variation of the current characteristic with time during charging exhibits inflection points prior to the battery attaining substantial full charge in which each inflection point is characterized by a change in sign of the second derivative of the current characteristic, said apparatus comprising: means for supplying electrical energy to the battery for charging thereof; and means connected to said supply means for monitoring said characteristic during charging, for analyzing the so-monitored characteristic with time to determine the occurrence of a sequence of inflection points characterized by a change in sign of the second derivative of the current characteristic from a positive to a negative value and a succeeding change in sign of the second derivative of the current characteristic from a negative to a positive value, and for controlling said supply means to control the supply of electrical energy to the battery.
Claim 75
Independent Claim
171 words
An apparatus for charging a battery of the type having a current characteristic associated therewith that varies with the state of charge of the battery and in which the variation of the current characteristic with time during charging exhibits inflection points prior to the battery attaining substantial full charge in which each inflection point is characterized by a change in sign of the second derivative of the current characteristic, said apparatus comprising: means for supplying electrical energy to the battery for charging thereof; and means connected to said supply means for monitoring said characteristic during charging, for analyzing the so-monitored characteristic with time to determine the occurrence of a sequence of inflection points characterized by a change in sign of the second derivative of the current characteristic from a positive to a negative value and a succeeding change in sign of the second derivative of the current characteristic from a negative to a positive value, and for controlling said supply means to control the supply of electrical energy to the battery.
Claim 76
Independent Claim
120 words
An apparatus for charging a nickel-cadmium battery having a voltage characteristic associated therewith that varies with the state of charge of the battery and in which the variation of the voltage characteristic with time during charging exhibits an inflection point prior to the battery attaining substantial full charge and another inflection point that precedes the first-mentioned inflection point, said apparatus comprising: supply means for supplying electrical energy to the battery for charging thereof; and stored-program controlled means connected to said supply means for monitoring the characteristic during charging, for analyzing the so-monitored characteristic with time to determine the occurrence of the first-mentioned inflection point, and for controlling said supply means to control the supply of electrical energy to the battery.
Claim 77
Independent Claim
120 words
An apparatus for charging a nickel-cadmium battery having a voltage characteristic associated therewith that varies with the state of charge of the battery and in which the variation of the voltage characteristic with time during charging exhibits an inflection point prior to the battery attaining substantial full charge and another inflection point that precedes the first-mentioned inflection point, said apparatus comprising: supply means for supplying electrical energy to the battery for charging thereof; and stored-program controlled means connected to said supply means for monitoring the characteristic during charging, for analyzing the so-monitored characteristic with time to determine the occurrence of the first-mentioned inflection point, and for controlling said supply means to control the supply of electrical energy to the battery.
Claim 78
Independent Claim
138 words
An apparatus for charging a battery of the type having a characteristic associated therewith that varies with the state of charge of the battery and in which the variation of the characteristic with time during charging exhibits an inflection point just prior to the battery attaining substantial full charge, said apparatus comprising: means for supplying electrical energy to the battery for charging thereof; and means connected to said supply means for monitoring the characteristic during charging, for analyzing the so-monitored characteristic with time to determine the occurrence of the inflection point that occurs just prior to the battery attaining substantial full charge and the occurrence of a predetermined variation of the monitored characteristic that comprises control indicium for controlling said supply means, and for controlling said supply means to control the supply of electrical energy to the battery.
Claim 79
Independent Claim
138 words
An apparatus for charging a battery of the type having a characteristic associated therewith that varies with the state of charge of the battery and in which the variation of the characteristic with time during charging exhibits an inflection point just prior to the battery attaining substantial full charge, said apparatus comprising: means for supplying electrical energy to the battery for charging thereof; and means connected to said supply means for monitoring the characteristic during charging, for analyzing the so-monitored characteristic with time to determine the occurrence of the inflection point that occurs just prior to the battery attaining substantial full charge and the occurrence of a predetermined variation of the monitored characteristic that comprises control indicium for controlling said supply means, and for controlling said supply means to control the supply of electrical energy to the battery.
Claim 80
Independent Claim
150 words
An apparatus for charging a battery of the type having a characteristic associated therewith that varies with the state of charge of the battery and in which the variation of the characteristic with time during charging exhibits an inflection point prior to the battery attaining a predetermined charge level and another inflection point that precedes the first-mentioned inflection point, said apparatus comprising: means for supplying electrical energy to the battery for charging thereof; means connected to said supply means for monitoring the characteristic during charging; means connected to said monitoring means for analyzing the so-monitored characteristic with time to determine the occurrence of the first-mentioned inflection point and the occurrence of a predetermined variation of the monitored characteristic that comprises control indicium for controlling said supply means; and means connected to said supply means to control the supply of electrical energy to the battery in response to said analyzing means.
Claim 81
Independent Claim
150 words
An apparatus for charging a battery of the type having a characteristic associated therewith that varies with the state of charge of the battery and in which the variation of the characteristic with time during charging exhibits an inflection point prior to the battery attaining a predetermined charge level and another inflection point that precedes the first-mentioned inflection point, said apparatus comprising: means for supplying electrical energy to the battery for charging thereof; means connected to said supply means for monitoring the characteristic during charging; means connected to said monitoring means for analyzing the so-monitored characteristic with time to determine the occurrence of the first-mentioned inflection point and the occurrence of a predetermined variation of the monitored characteristic that comprises control indicium for controlling said supply means; and means connected to said supply means to control the supply of electrical energy to the battery in response to said analyzing means.
Claim 82
Independent Claim
143 words
An apparatus for charging a battery of the type having a characteristic associated therewith that varies with the state of charge of the battery and in which the variation of the characteristic with time during charging exhibits a sequence of a first and a successive inflection point, said apparatus comprising: means for supplying electrical energy to the battery for charging thereof; means connected to said supply means for monitoring the characteristic during charging; means connected to said monitoring means for analyzing the so-monitored characteristic with time to determine the occurrence of a sequence of the first and successive inflection points and the occurrence of a predetermined variation of the monitored characteristic that comprises control indicium for controlling said supply means; and means connected to said supply means to control the supply of electrical energy to the battery in response to said analyzing means.
Claim 83
Independent Claim
143 words
An apparatus for charging a battery of the type having a characteristic associated therewith that varies with the state of charge of the battery and in which the variation of the characteristic with time during charging exhibits a sequence of a first and a successive inflection point, said apparatus comprising: means for supplying electrical energy to the battery for charging thereof; means connected to said supply means for monitoring the characteristic during charging; means connected to said monitoring means for analyzing the so-monitored characteristic with time to determine the occurrence of a sequence of the first and successive inflection points and the occurrence of a predetermined variation of the monitored characteristic that comprises control indicium for controlling said supply means; and means connected to said supply means to control the supply of electrical energy to the battery in response to said analyzing means.
Claim 84
Independent Claim
130 words
An apparatus for charging a nickel-cadmium battery of the type having a voltage characteristic associated therewith that varies with the state of charge of the battery and in which the variation of the voltage characteristic with time during charging exhibits an opposed pair of inflection points, said apparatus comprising: means for supplying electrical energy to the battery for charging thereof; and means connected to said supply means for monitoring the voltage characteristic during charging, for analyzing the so-monitored characteristic with time to determine the occurrence of the last inflection point of the opposed pair and the occurrence of a predetermined variation of the monitored characteristic that comprises control indicium for controlling said supply means, and for controlling said supply means to control the supply of electrical energy to the battery.
Claim 85
Independent Claim
130 words
An apparatus for charging a nickel-cadmium battery of the type having a voltage characteristic associated therewith that varies with the state of charge of the battery and in which the variation of the voltage characteristic with time during charging exhibits an opposed pair of inflection points, said apparatus comprising: means for supplying electrical energy to the battery for charging thereof; and means connected to said supply means for monitoring the voltage characteristic during charging, for analyzing the so-monitored characteristic with time to determine the occurrence of the last inflection point of the opposed pair and the occurrence of a predetermined variation of the monitored characteristic that comprises control indicium for controlling said supply means, and for controlling said supply means to control the supply of electrical energy to the battery.
Claim 86
Dependent Claim
21 words
The apparatus claimed in claim 29, 31, 33, 35, 38, or 44, wherein said second-mentioned means comprises a stored-program controlled means.
Claim 87
Dependent Claim
17 words
The apparatus claimed in claim 48, wherein said stored-program controlled means comprises a stored-program processor controlled means.
Claim 88
Dependent Claim
48 words
The apparatus claimed in claim 48, wherein said stored-program controlled means further comprises: means for analyzing the so-monitored characteristic with time to determine the occurrence of a predetermined variation of the monitored characteristic that comprises a control indicium for controlling the supply of electrical energy to the battery.
Claim 89
Dependent Claim
70 words
The apparatus claimed in claim 50, wherein said means for analyzing to determine the occurrence of a control indicium comprises means for determining the occurrence of a one of: the variation of the characteristic ceasing to be monotonic; the value of the characteristic decreasing to a predetermined limit; the value of the characteristic increasing to a predetermined limit; the slope of the variation of the characteristic attaining a predetermined limit.
Claim 90
Dependent Claim
33 words
The apparatus claimed in claim 48, wherein said stored-program controlled means further comprises: means for reducing the supply of electrical energy to the battery upon the passage of a predetermined amount of time.
Claim 91
Dependent Claim
50 words
The apparatus claimed in claim 30, 33, 34, 35, 38, or 43, wherein said second-mentioned means further comprises: means for analyzing the variation of said monitored characteristic with time to determine the occurrence of a predetermined variation of said characteristic that comprises a control indicium for controlling said supply means.
Claim 92
Dependent Claim
69 words
The apparatus claimed in claim 53, wherein said means for analyzing to determine the occurrence of a control indicium comprises means for determining the occurrence of a one of: the variation of the characteristic ceasing to be monotonic; the value of characteristic decreasing to a predetermined limit; the value of the characteristic increasing to a predetermined limit; the slope of the variation of the characteristic attaining a predetermined limit.
Claim 93
Dependent Claim
33 words
The apparatus claimed in claim 53, wherein said stored-program controlled means further comprises: means for reducing the supply of electrical energy to the battery upon the passage of a predetermined amount of time.
Claim 94
Dependent Claim
48 words
The apparatus claimed in claim 37, 39, or 40, wherein said means for analyzing further comprises: means for analyzing the variation of said monitored characteristic with time to determine the occurrence of a predetermined variation of said characteristic that comprises a control indicium for controlling said supply means.
Claim 95
Dependent Claim
58 words
The apparatus claimed in claim 56, wherein said means for analyzing to determine the occurrence of a control indicium comprises means for determining the occurrence of a one of: the variation of the characteristic ceasing to be monotonic; the value of the characteristic decreasing to a predetermined limit; the value of the characteristic increasing to a predetermined limit.
Claim 96
Dependent Claim
33 words
The apparatus claimed in claim 56, wherein said stored-program controlled means further comprises: means for reducing the supply of electrical energy to the battery upon the passage of a predetermined amount of time.
Claim 97
Dependent Claim
19 words
The apparatus claimed in claim 29, 30, 31, 34, 38, or 44, wherein said battery is a nickel-cadmium battery.
Claim 98
Independent Claim
120 words
A method of rapidly and efficiently charging a battery of the type having an electrical characteristic associated therewith that varies with the state of charge of the battery and in which the characteristic varies with time during charging to exhibit an inflection point just prior to the battery attaining substantial full charge, the method comprising the steps of: supplying electrical energy to the battery for charging thereof; monitoring said electrical characteristic of the battery during charging; analyzing the variation of said monitored characteristic with time to determine the occurrence of the inflection point exhibited just prior to the battery attaining substantial full charge; and discontinuing the supply of electrical energy to the battery on the basis of the so-determined occurrence.
Claim 99
Independent Claim
120 words
A method of rapidly and efficiently charging a battery of the type having an electrical characteristic associated therewith that varies with the state of charge of the battery and in which the characteristic varies with time during charging to exhibit an inflection point just prior to the battery attaining substantial full charge, the method comprising the steps of: supplying electrical energy to the battery for charging thereof; monitoring said electrical characteristic of the battery during charging; analyzing the variation of said monitored characteristic with time to determine the occurrence of the inflection point exhibited just prior to the battery attaining substantial full charge; and discontinuing the supply of electrical energy to the battery on the basis of the so-determined occurrence.
Claim 100
Dependent Claim
44 words
The method claimed in claim 60, wherein said discontinuing step further comprises: discontinuing the supply of electrical energy to the battery and subsequently supplying electrical energy to the battery at a predetermined maintenance rate not less than the internal discharge rate of the battery.
Claim 101
Dependent Claim
34 words
The method claimed in claim 1, 2, 3, 4, 7, 15, 19 or 60, wherein said supplying step further comprises: supplying the electrical energy to the battery at a rate greater than 0.2 C.
Claim 102
Dependent Claim
27 words
The method claimed in claim 1, 2, 3, 4, 7, 18, 19, or 60, wherein said monitoring step further comprises: monitoring the characteristic on a periodic basis.
Claim 103
Dependent Claim
38 words
The method claimed in claim 60, wherein said discontinuing step further comprises: discontinuing the supply of electrical energy to the battery and subsequently supplying electrical energy to the battery for a selected time period on a recurring basis.
References Cited (Backward Citations)
DE1438002A1
Cited
US3289065A
Cited
US3424969A
Cited
US3660748A
Cited
US3703675A
Cited
US3890556A
Cited
US3794905A
Cited
US3864617A
Cited
US4034279A
Cited
US3938021A
Cited
US4118661A
Cited
US4114083A
Cited
USPTO Annuity & Maintenance Windows
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| 3.5 Years (Year 4) | 1986-07-04 | 1987-01-03 | 1987-07-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-07-04 | 1991-01-03 | 1991-07-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-07-04 | 1995-01-03 | 1995-07-05 | $7700.00 | Window Closed / Lapsed |