The present invention addresses the problem of providing a power supply system capable of sufficiently exhibiting the output performance of an output-type second storage battery even if the charging rate of a capacity-type first storage battery is reduced. In order to solve the problem, the power supply system according to the present invention comprises: a load circuit including a drive motor connected to a drive wheel; a capacity-type first battery; an output-type second battery; the power circuit is connected with the load circuit, the first storage battery and the second storage battery; and a manager ECU that, by operating the power circuit, controls the flow of power between the first and second batteries and the drive motor and the flow of power from the first battery to the second battery. When a second SOC corresponding to the charging rate of the second battery is less than a second SOC lower limit value A, the manager ECU permits execution of power path control for supplying power output from the first battery to the second battery, and sets the second SOC lower limit value A to a larger value as the first SOC of the first battery becomes smaller.
本发明的问题在于提供一种电源系统,即使容量型的第一蓄电池的充电率下降,也可以充分地发挥输出型的第二蓄电池的输出性能。为了解决上述问题,本发明的电源系统包括:负载电路,包括连结于驱动轮的驱动马达;容量型第一蓄电池;输出型第二蓄电池;电力电路,连接负载电路、第一蓄电池及第二蓄电池;及,管理器ECU,借由操作电力电路,控制第一蓄电池及第二蓄电池与驱动马达之间的电力的流动、以及电力从第一蓄电池向第二蓄电池的流动。管理器ECU在相当于第二蓄电池的充电率的第二SOC小于第二SOC下限值A的情况下,允许执行将从第一蓄电池输出的电力供给至第二蓄电池的电力路径控制,并且第一蓄电池的第一SOC越小,则将第二SOC下限值A设定为越大的值。
Power supply system
电源系统
2022-06-07
Patent
Electronic Resource
Chinese
IPC: | B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen |
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