The invention provides a battery charging method and a vehicle electrical system. A charging pile can safely and efficiently charge a low-SOC power battery in a low-temperature environment. A battery charge control method is applied to a vehicle electrical system including a current control unit including a semiconductor device. The method comprises the steps that when the temperature of a battery is lower than a first preset temperature, a current control unit is controlled to be in a first state, and the first state comprises the state that a semiconductor device is reversely connected to a circuit; requesting to send a first charging request, wherein the first charging request comprises a first charging current; when the battery temperature reaches the first preset temperature, the current control unit is controlled to be in a second state, and the second state comprises the state that the semiconductor device is connected out of the circuit or the state that the semiconductor device is positively connected into the circuit; a second charging request is requested to be sent, the second charging request comprises second charging current, and the battery is charged with the second charging current.
本申请提供一种电池充电方法和车辆电气系统,能够满足充电桩在低温环境下对低SOC动力电池进行安全高效的充电。电池充电控制方法应用于一种车辆电气系统,该系统包括电流控制单元,电流控制单元包括半导体器件。该方法包括:当电池的温度低于第一预设温度时,控制电流控制单元处于第一状态,其中,第一状态包括半导体器件反向接入电路的状态;请求发送第一充电请求,第一充电请求包括第一充电电流;当电池温度达到第一预设温度时,控制电流控制单元处于第二状态,第二状态包括半导体器件接出电路的状态或半导体器件正向接入电路的状态;请求发送第二充电请求,第二充电请求包括第二充电电流,电池以第二充电电流进行充电。
Battery charging method and vehicle electrical system
电池充电方法和车辆电气系统
2023-07-11
Patent
Electronic Resource
Chinese
IPC: | B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen |
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