EP0426109A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Apparatus for controlling a power supply of an electric machine in a vehicle
Assignee: NEC Corp
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Filing: 1990-10-30
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Granted: —
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Expires: 2010-10-30
Abstract
Abstract An apparatus for controlling a power supply of an electric machine in a vehicle comprises primary (13) and secondary power supplies (16) for supplying an electric power to the electric machine. In non-driving state of an engine (11), the primary power (13) supply is selected as a power supply for the electric machine when an electric power consumption is over a predetermined value, and the secondary power supply (16) is selected when the consumption is below the predetermined value. Therefore, the absentee receiving of facsimile information, the absentee recording of telephone message, etc. are carried out, even in a state of turning-off of an ignition switch (14). The secondary power supply (16) is used mainly in the case that the electric machine is in waiting mode, so that the complete exhaustion of the secondary battery (16) can be prevented.
Inventors
- 👤 Ryuhei C/O Nec Corporation Fujiwara
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-29 13:21
CPC Classifications
H; H02; H02J; H02J7/00; H02J7/50; H02J7/34; H02J7/342; H02J7/585; B; B60; B60R; B60R16/00; B60R16/02; B60R16/03; H02J2105/00; H02J2105/30; H02J2105/33; Y; Y02; Y02T; Y02T10/00; Y02T10/60; Y02T10/70
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
137 words
An apparatus for controlling a power supply of an electric machine in a vehicle, comprising: a primary power supply for supplying an electric power to said electric machine, said primary power supply being a battery which is charged from a generator driven by an engine of said vehicle; a secondary power supply for supplying an electric power to said electric machine, said secondary power supply being an additional battery which is charged from said primary power supply; means for detecting a load current of said electric machine; means for selectinone power supply from said primary and secondary power supplies; and means for controlling said selecting means to select said primary power supply, when said load current is over a predetermined value, and to select said secondary power supply, when said load current it below said predetermined value.
Claim 2
Independent Claim
137 words
An apparatus for controlling a power supply of an electric machine in a vehicle, comprising: a primary power supply for supplying an electric power to said electric machine, said primary power supply being a battery which is charged from a generator driven by an engine of said vehicle; a secondary power supply for supplying an electric power to said electric machine, said secondary power supply being an additional battery which is charged from said primary power supply; means for detecting a load current of said electric machine; means for selectinone power supply from said primary and secondary power supplies; and means for controlling said selecting means to select said primary power supply, when said load current is over a predetermined value, and to select said secondary power supply, when said load current it below said predetermined value.
Claim 3
Dependent Claim
44 words
An apparatus for controlling a power supply of an electric machine in a vehicle, according to claim 1, wherein: said detecting means, comprises; first and second means for selecting load currents supplied from said primary and secondary power supplies, respectively, to said electric machine.
Claim 4
Dependent Claim
34 words
An apparatus for controlling a power supply of an electric machine in a vehicle, according to claim 2, wherein: said first and second detecting means are photocouplers each including an LED and a phototransistor.
Claim 5
Dependent Claim
55 words
An apparatus for controlling a power supply of an electric machine in a vehicle, according to claim 1, 2 or 3, wherein: said selecting means is a relay including a coil energized by said predetermined value of said load current and first and second relay contacts, respectively, selected by energization and non-energization of said coil.
Claim 6
Independent Claim
47 words
An apparatus for controlling a power supply of an electric machine in a vehicle, according to any one of claims 1 to 4, wherein: said controlling moans is an OR gate supplying said selecting means with a selecting signal depending on a level of said load current..
Claim 7
Dependent Claim
44 words
An apparatus for controlling a power supply of an electric machine in a vehicle, according to claim 3, 4 or 5, further comprising: variable resistors connected to the bases of said photocouplers, respectively, for adjusting a threshold level to select said one power supply.
Claim 8
Independent Claim
136 words
An apparatus for controlling a power supply of an electric machine in a vehicle, comprising: a primary power supply for supplying an electric power to said electric machine, said primary power supply being a battery which is charged from a generator driven by an engine of said vehicle; a secondary power supply for supplying an electric power to said electric machine, said secondary power supply being an additional battery which is charged from said primary power supply; means for detecting operation of said electric machine; means for selecting one power supply from said primary and secondary power supplies; and means for controlling said selecting mans to select said primary power supply, when said electric machine is in an operating mode, and to select said secondary power supply, when said electric machine is in a waiting mode.
Claim 9
Independent Claim
136 words
An apparatus for controlling a power supply of an electric machine in a vehicle, comprising: a primary power supply for supplying an electric power to said electric machine, said primary power supply being a battery which is charged from a generator driven by an engine of said vehicle; a secondary power supply for supplying an electric power to said electric machine, said secondary power supply being an additional battery which is charged from said primary power supply; means for detecting operation of said electric machine; means for selecting one power supply from said primary and secondary power supplies; and means for controlling said selecting mans to select said primary power supply, when said electric machine is in an operating mode, and to select said secondary power supply, when said electric machine is in a waiting mode.
Claim 10
Dependent Claim
75 words
An apparatus for controlling a power supply of an electric machine in a vehicle, according to claim 7, wherein: said selecting means is a relay activated by a selecting signal supplied from said controlling means dependent on said mode of said electric machine, and said controlling moans is an OR gate having input terminals connected, respectively, to said electric machine and an ignition switch of said vehicle to supply said relay with said selecting signal.
Claim 11
Independent Claim
189 words
An apparatus for controlling a power supply of an electric machine in a vehicle, comprising: a primary power supply for supplying an electric power to said electric machine, said primary power supply being a battery which is charged from a generator driven by an engine of said vehicle; a secondary power supply for supplying an electric power to said electric machine, said secondary power supply being an additional battery which is charged from said primary power supply; means for detecting a driving state of an engine in said vehicle; means for detecting a load current of said electric machine; means for selecting one power supply from said primary and secondary power supplies; and means for controlling said selecting means to select said primary power supply, in a condition selected from a first condition that said engine is in said driving state and a second condition that, in case of non-driving state of said engine, said load current is over said predetermined value, and to select said secondary power supply, in a condition that said engine is in said non-driving state and said load current is below said predetermined value.
Claim 12
Independent Claim
189 words
An apparatus for controlling a power supply of an electric machine in a vehicle, comprising: a primary power supply for supplying an electric power to said electric machine, said primary power supply being a battery which is charged from a generator driven by an engine of said vehicle; a secondary power supply for supplying an electric power to said electric machine, said secondary power supply being an additional battery which is charged from said primary power supply; means for detecting a driving state of an engine in said vehicle; means for detecting a load current of said electric machine; means for selecting one power supply from said primary and secondary power supplies; and means for controlling said selecting means to select said primary power supply, in a condition selected from a first condition that said engine is in said driving state and a second condition that, in case of non-driving state of said engine, said load current is over said predetermined value, and to select said secondary power supply, in a condition that said engine is in said non-driving state and said load current is below said predetermined value.
Claim 13
Independent Claim
70 words
An apparatus for controlling a power supply of an electric machine in a vehicle, comprising: primary power supply means for supplying power to electric equipment; secondary power supply means for supplying power to said equipment; means for detecting the condition of said equipment to provide a condition signal; and means responsive to said condition signal for selectively supplying power from said primary and secondary power supply means to said equipment.
Claim 14
Independent Claim
70 words
An apparatus for controlling a power supply of an electric machine in a vehicle, comprising: primary power supply means for supplying power to electric equipment; secondary power supply means for supplying power to said equipment; means for detecting the condition of said equipment to provide a condition signal; and means responsive to said condition signal for selectively supplying power from said primary and secondary power supply means to said equipment.
Claim 15
Dependent Claim
41 words
An apparatus for controlling a power supply of an electric machine in a vehicle, according to claim 10: wherein said primary power supply means comprises a car battery, and wherein said secondary power supply means is charged with said car battery.
Claim 16
Dependent Claim
39 words
An apparatus for controlling a power supply of an electric machine in a vehicle, according to claim 10 or 11, wherein: said detecting means comprises means for detecting the load current of said equipment to produce said condition signal.
References Cited (Backward Citations)
No citation records indexed.
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