On-vehicle power supplying apparatus with two power supplies
First Claim
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1. An on-vehicle power supplying apparatus comprising:
- a first power-supply system having a generator driven by an on-vehicle engine and a first battery charged by the generator, a second power-supply system having a second battery connected to an on-vehicle electric load;
a power transmission unit transmitting power from the first power-supply system to the second power-supply system; and
a controller controlling an operation of the power transmission unit to adjust, when the engine is stopped, the power transmitted from the first power-supply system to the second power-supply system in a predetermined order in which the first battery is firstly made to transit the power to the electric load, provided that a residual capacity of the first battery is higher than a predetermined threshold.
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Abstract
An on-vehicle power supplying apparatus comprises a first battery charged by a generator driven by an on-vehicle engine, a second battery connected to an on-vehicle electric load, and a power adjuster adjusting power to be supplied from both of the first and second batteries to the electric load. For adjusting the power, he power adjuster uses a predetermined order in which the first battery is firstly made to supply the power to the electric load, provided that a residual capacity of the first battery is higher than a predetermined threshold, before making both the first and second batteries supply the power to the electric load cooperatively.
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Citations
17 Claims
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1. An on-vehicle power supplying apparatus comprising:
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a first power-supply system having a generator driven by an on-vehicle engine and a first battery charged by the generator, a second power-supply system having a second battery connected to an on-vehicle electric load;
a power transmission unit transmitting power from the first power-supply system to the second power-supply system; and
a controller controlling an operation of the power transmission unit to adjust, when the engine is stopped, the power transmitted from the first power-supply system to the second power-supply system in a predetermined order in which the first battery is firstly made to transit the power to the electric load, provided that a residual capacity of the first battery is higher than a predetermined threshold. - View Dependent Claims (2, 3, 4, 5)
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6. An on-vehicle power supplying apparatus comprising:
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a first power-supply system having a generator driven by an on-vehicle engine and a first battery charged by the generator;
a second power-supply system having a second battery connected to an on-vehicle electric load;
a power transmission unit transmitting power from the first power-supply system to the second power-supply system; and
a controller controlling an operation of the power transmission unit to adjust, when the engine is stopped, so that both of the first and second batteries supply the power to the electric load cooperatively. - View Dependent Claims (7, 8, 9)
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10. An on-vehicle power supplying apparatus comprising:
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a first battery charged by a generator driven by an on-vehicle engine;
a second battery connected to an on-vehicle electric load; and
a power adjuster adjusting power to be supplied from both of the first and second batteries to the electric load in a predetermined order in which the first battery is firstly made to supply the power to the electric load, provided that a residual capacity of the first battery is higher than a predetermined threshold. - View Dependent Claims (11, 12, 13, 14, 15)
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16. A method of controlling an on-vehicle power supplying apparatus comprising a first battery charged by a generator driven by an on-vehicle engine and a second battery connected to an on-vehicle electric is load, comprising steps of:
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first determining whether or not a sum of residual capacities of the first and second batteries is higher then a predetermined engine-start threshold, when the engine is stopped;
stating the engine when the first determining step determines that the sum of the residual capacities is not higher than the engine-start threshold;
second determining whether or not the residual capacity of the first battery is higher than a predetermined switching threshold, when the first determining step determines that the sum of the residual capacities is higher than the engine-start threshold; and
making the first battery firstly supply the power to the electric load, when the second determining step determines that the residual capacity of the first battery is higher than the predetermined switching threshold. - View Dependent Claims (17)
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Specification