Battery charge control apparatus
AssigneeDenso Corporation
InventorKEISUKE TANI
Life of this patent
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Abstract
A battery charge control apparatus for a vehicle, where the vehicle is provided with a prime mover driven by using fuel stored in the vehicle, power generation means for converting energy generated by the prime mover using the fuel into electrical energy, and a secondary battery that stores the electrical energy generated by the power generation means. The apparatus includes temperature detection means for detecting a temperature of the battery, and battery-charge limiting means for limiting storing of the electrical energy generated by the power generation means into the battery when the temperature of the battery detected by the temperature detection means is low. This leads to enhancement of fuel usage efficiency of the engine.
Claims9
1-2. (canceled)
A battery charge control apparatus for a vehicle, the vehicle being provided with a prime mover driven by using fuel stored in the vehicle, power generation means for converting energy generated by the prime mover using the fuel into electrical energy, and a secondary battery that stores the electrical energy generated by the power generation means, the apparatus comprising:
- cost calculation means for calculating a cost that is an amount of fuel consumed by the prime mover to generate the battery charging power used to actually store unit electric power in the battery;
- upper-limit setting means for setting an upper limit of the cost on the basis of at least one of a state of charge (SOC) of the battery and a power requirement of a load that is supplied with the electrical power from the battery;
- and
- battery-charge limiting means for setting the battery charging power such that the cost calculated by the cost calculation means becomes equal to or smaller than the upper limit set by the upper-limit setting means.
Dependencies are inferred from the claim text.