Power supply

Abstract

Page 1 of 1 Summary of the invention. Power supply devices that can be installed in vehicles include: High-voltage battery; a low-voltage battery whose output voltage is lower than that of a standard battery. High voltage, which can be charged by the high-voltage electrical power output from the battery; and A control unit designed to manage the charging / discharging of batteries. High voltage and low battery voltage. The control unit performs input control to... A high-voltage battery supplies power to pre-designated vehicle equipment, whereby... The power consumption will be higher than the preset value when the vehicle's main switch is engaged. Not enabled.

Claims

Page 1 of 1 page of Claims 1. Power supply device that can be installed on the vehicle. The power supply device consists of: a high-voltage battery; a low-voltage battery whose output voltage is lower than that of the high-voltage battery and which can be charged by the power output from the high-voltage battery; and a control unit built to control the charging / discharging of the high-voltage and low-voltage batteries. The control unit controls the power supply so that the high-voltage battery can power pre-defined devices on the vehicle, where the power consumption is higher than a pre-set value in the state where the vehicle's main switch is not activated. 2.

1. Power supply equipment under Claim 1, where the control unit performs auxiliary charging for high-voltage battery charging while the vehicle is running to increase the charge capacity of the high-voltage battery so that the amount of stored power is consistent with the amount of power to be supplied, which is an approximate amount of power supplied from the high-voltage battery to the pre-defined onboard equipment during periods of non-running, compared to the case where the vehicle does not have the pre-defined onboard equipment.

3. Power supply equipment under Claim 2, where the control unit determines the required time for auxiliary charging, which depends on the amount of power being charged, the charging / discharging capacity of the power supply equipment, and the travel time estimated from the running history. 4.The power supply equipment under claim 3, where the control unit determines the amount of increase in high-voltage battery power storage for auxiliary charging, the amount of decrease in high-voltage battery power storage for input control, and the required time, so that the amount of regression in average fuel economy is less than or equal to the predetermined value when compared to the case without input and auxiliary charging control;