EP0010449A1
Expired / Lapsed
EP
⏱️ 0.0 years remaining
A method of and apparatus for charging a vehicle battery
Assignee: Denso Corp
•
Filing: 1979-10-23
•
Granted: —
•
Expires: 1999-10-23
Abstract
Abstract A method of and apparatus for charging a vehicle battery (2) in which the actual charging voltage produced by a generator (1) connected for charging the battery (2) is detected along with the battery temperature, a parameter representative of the charging condition of the battery (2) (usually the specific gravity of the electrolyte) and the electrical load on the battery (2). By means of a computer (20) a reference voltage value is then derived as a predetermined function of the said detected temperature, charging condition and load, and the operation of a generator (1) is controlled to adjust the battery charging voltage to the reference voltage value. The computer (20) may be programmed to calculate this reference value directly or it may be derived by the computer (20) from a basic value selected from a range of values stored within the computer (20), in response to the detected temperature, charging condition and load. An alarm (10) may be actuated when the generator (1) is not operating.
Inventors
- 👤 Mori Kazumasa
- 👤 Kato Tetsuo
- 👤 Muto Katsuya
- 👤 Miura Etsushi
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-27 17:47
CPC Classifications
H; H02; H02J; H02J7/00; H02J7/14; H02J7/16; H02J7/1438; H02J7/60; H02J7/62; H02J7/64; H02J7/80
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
88 words
A method of charging a vehicle battery in which the actual charging voltage produced by a generator connected for charging the battery, is detected and comprising detecting the battery temperature, a parameter representative of the charging condition of the battery and the electrical load on the battery, deriving a reference voltage value which is a predetermined function of the said detected temperature, the battery charging condition and the battery load and controlling operation of the generator to adjust the battery charging voltage to the said reference voltage value.
Claim 2
Independent Claim
88 words
A method of charging a vehicle battery in which the actual charging voltage produced by a generator connected for charging the battery, is detected and comprising detecting the battery temperature, a parameter representative of the charging condition of the battery and the electrical load on the battery, deriving a reference voltage value which is a predetermined function of the said detected temperature, the battery charging condition and the battery load and controlling operation of the generator to adjust the battery charging voltage to the said reference voltage value.
Claim 3
Dependent Claim
34 words
A method according to this claim 1, wherein the said temperature is the temperature of battery electrolyte and the parameter representative of the battery charging condition is the specific gravity of the battery electrolyte.
Claim 4
Dependent Claim
20 words
A method according to claim 1 further comprising the steps of actuating an alarm when the generator is not operating.
Claim 5
Independent Claim
46 words
A method according to any one of claims 1 to 3 wherein the reference value is derived by a ccmputer from a basic value selected from among a range of values stored within the computer, in response to the detected temperature, charging condition and electrical load.
Claim 6
Independent Claim
33 words
A method according to any one of claims 1 to 4 wherein the reference value is calculated by means of a computer in response to the detected temperature, charging condition and electrical load.
Claim 7
Dependent Claim
85 words
Apparatus for charging a vehicle battery comprising a voltage generator connected to the battery, a detector for producing a signal representative of the battery temperature a detector for producing a signal representative of the charging condition of the battery, and means for deriving a reference voltage value which is a predetermined function of the said temperature, the said charging condition and the electric load on the battery and for controlling operation of . the generator-to adjust the battery charging voltage to the said reference voltage.
Claim 8
Dependent Claim
85 words
Apparatus for charging a vehicle battery comprising a voltage generator connected to the battery, a detector for producing a signal representative of the battery temperature a detector for producing a signal representative of the charging condition of the battery, and means for deriving a reference voltage value which is a predetermined function of the said temperature, the said charging condition and the electric load on the battery and for controlling operation of . the generator-to adjust the battery charging voltage to the said reference voltage.
Claim 9
Dependent Claim
53 words
Apparatus according to claim 6 wherein the said deriving and controlling means comprises a computer which is programmed to calculate the said reference value in response to the detected temperature, charging condition and electrical load, to compare the reference value with the battery charging voltage and to adjust the battery charging voltage accordingly.
Claim 10
Dependent Claim
23 words
Apparatus according to claim 6 or claim 7 wherein the computer is arranged to actuate an alarm when the generator is not operating.
Claim 11
Independent Claim
16 words
A method of charging a battery substantially as hereinbefore described with reference to the accompanying drawings.
Claim 12
Independent Claim
16 words
A method of charging a battery substantially as hereinbefore described with reference to the accompanying drawings.
Claim 13
Dependent Claim
19 words
Apparatus for charging a vehicle battery constructed and arranged substantially as hereinbefore described with reference to the accompanying drawings.
Claim 14
Dependent Claim
19 words
Apparatus for charging a vehicle battery constructed and arranged substantially as hereinbefore described with reference to the accompanying drawings.
References Cited (Backward Citations)
FR1230617A
Cited
DE1563619B1
Cited
US3496447A
Cited
DE2104833A1
Cited
US3895284A
Cited
DE2413818A1
Cited
USPTO Annuity & Maintenance Windows
Maintenance schedule is calculated for granted US utility patents.