The invention discloses a vehicle starting power source SOC management system which comprises a starting power supply, a DCDC calculation control unit and a low-voltage electric accessory, wherein the starting power supply adopts a lithium battery as a starting power supply for low-voltage power supply; the DCDC calculation control unit and the starting power supply can mutually output power and simultaneously output power to the low-voltage electric accessory under the condition that the power of the vehicle is high, and the DCDC charges the starting power supply under the condition that the power of the vehicle is low or the vehicle is in a charging state; and the low-voltage electric accessory is responsible for consuming the starting power supply and the DCDC output power supply. Herein, the lithium battery is adopted as the starting power supply to replace an accumulator jar for low-voltage power supply, and meanwhile, the power can be output, so that a part of power of the DCDC can be compensated, and the power of the DCDC is reduced, and therefore the problems that the vehicle is parked for a long time, and the starting power supply is lack of electricity are solved.
本发明公开了一种车辆启动电源SOC管理系统,包括启动电源、DCDC计算控制单元、低压用电附件;启动电源采用锂电池作为启动电源进行低压供电;DCDC计算控制单元与启动电源在车辆功率大的情况下会相互输出电源并且同时向低压用电附件输出功率,车辆功率小或车辆充电状态下DCDC给所述启动电源充电;低压用电附件负责消耗启动电源和DCDC输出的电源。本发明通过采用锂电池作为启动电源,替代蓄电瓶进行低压供电,同时可以输出功率,补偿DCDC部分功率,同时减小DCDC的功率,从而解决车辆长时间停放,启动电源亏电问题。
Vehicle starting power supply SOC management system
一种车辆启动电源SOC管理系统
2021-12-10
Patent
Electronic Resource
Chinese
VEHICLE POWER SUPPLY SYSTEM, ELECTRIC VEHICLE AND STARTING METHOD
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