The invention relates to an electric vehicle, a charging control circuit and a method thereof, and a battery management system. The charging control circuit of the electric vehicle comprises a whole vehicle controller, a direct current-direct current converter, a power battery, a high-voltage cabinet, a charging base, a starting battery and a battery management system, and the high-voltage cabinet is connected with the charging base, the power battery and the direct current-direct current converter through high-voltage power lines; the high-voltage cabinet is further connected with the charging base, the power battery and the direct current-direct current converter through low-voltage signal lines. The battery management system is connected with the charging base and the vehicle control unit through low-voltage signal lines. The direct current-direct current converter is connected with the starting battery through a low-voltage power line and connected with the vehicle control unit through a low-voltage signal line. A whole vehicle controller is used for awakening the direct current-direct current converter to supply power to the starting battery under the condition that the whole vehicle is charged. According to the invention, the DC-DC converter can be awakened in the charging process, so that the problem of power shortage of the starting battery in the charging process is solved.
本公开涉及一种电动汽车及其充电控制电路和方法、电池管理系统。该电动汽车充电控制电路包括:整车控制器、直流‑直流转换器、动力电池、高压柜、充电座、启动电池和电池管理系统,其中,高压柜通过高压电源线分别与充电座、动力电池和直流‑直流转换器连接;高压柜还通过低压信号线分别与充电座、动力电池和直流‑直流转换器连接;电池管理系统通过低压信号线分别与充电座和整车控制器连接;直流‑直流转换器通过低压电源线与启动电池连接,通过低压信号线与整车控制器连接;整车控制器,用于在整车充电的情况下,唤醒直流‑直流转换器给启动电池供电。本公开通过可以充电过程唤醒直流‑直流转换器,从而解决了充电过程中出现的启动电池亏电问题。
Electric vehicle, charging control circuit and method thereof, and battery management system
电动汽车及其充电控制电路和方法、电池管理系统
2021-05-28
Patent
Electronic Resource
Chinese
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