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AssigneeToyota Jidosha Kabushiki Kaisha
InventorMitsuhiro Nada
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The technique of the present invention sets two reference voltages, that is, a minimum reference voltage and an operation inhibiting reference voltage, as the criteria for detecting the conditions of power supply of a low voltage power source system including a low voltage battery. The operation inhibiting reference voltage is lower than the minimum reference voltage and represents a threshold value ensuring the normal operation of an apparatus that establishes the power source of a high voltage power source system. In a first range where the power source voltage of the low voltage battery is lower than the minimum reference voltage but is not lower than the operation inhibiting reference voltage, a converter is activated to charge the low voltage battery, so as to recover the power source voltage of the low voltage battery to the minimum reference voltage. The whole system of, for example, a vehicle or an apparatus then functions normally. In a second range where the power source voltage of the low voltage battery is lower than the operation inhibiting reference voltage, on the other hand, operation of the whole system is inhibited. This arrangement brings outs the best performance of the low voltage battery while assuring safety of the whole system.
A vehicle that utilizes electrical energy of a high voltage power source system including a high voltage battery, said vehicle comprising:
A power source system controller mounted on an apparatus that utilizes electrical energy of a high voltage power source system including a high voltage battery, said power source system controller comprising:
In an apparatus that utilizes electrical energy of a high voltage power source system including a high voltage battery, a method of controlling a power source system, said method comprising the steps of:
A method of controlling a start of a vehicle, said vehicle comprising a converter that converts electrical energy of a high voltage battery into a low voltage and supplies the converted low voltage and utilizing electrical energy of a high voltage power source system including the high voltage battery, said method comprising the steps of:
Dependencies are inferred from the claim text.