A vehicle charging device, a vehicle charging control method, and a vehicle charging system according to one embodiment of the present invention are provided with a charging circuit having an input side connected to an external power source via a first shutter. A DC/DC converter connected to the auxiliary battery and a second switch are connected to the output side in this order, and when the voltage of the auxiliary battery decreases, the charging circuit is operated in a state in which the second switch is open, thereby starting charging of the auxiliary battery, after which the second switch is closed, and the charging circuit is operated in a state in which the second switch is closed. Charging of a vehicle drive battery is started. As a result, it is possible to stably charge the battery for driving the vehicle even in a state where the voltage of the auxiliary battery is reduced while ensuring charging safety.
本发明所涉及的车辆用充电装置、车辆充电控制方法以及车辆充电系统在其一个方式中具备充电电路,该充电电路的输入侧经由第一开闭器与外部电源连接,输出侧以与辅机蓄电池连接的DC/DC转换器、第二开闭器的顺序与车辆驱动用蓄电池连接,在辅机蓄电池的电压降低时,在第二开闭器打开的状态下使充电电路动作,由此开始辅机蓄电池的充电,此后,第二开闭器闭合,开始车辆驱动用蓄电池的充电。由此,能够确保充电的安全性,并且即使在辅机蓄电池的电压降低的状态下也能够稳定地实施车辆驱动用蓄电池的充电。
VEHICLE CHARGING DEVICE, VEHICLE CHARGING CONTROL METHOD, AND VEHICLE CHARGING SYSTEM
车辆用充电装置、车辆充电控制方法以及车辆充电系统
2024-11-15
Patent
Electronic Resource
Chinese
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