The process then reverses, but with the electrons in the external circuit powering a device, such as an EV's electric motor.

然后该过程反转，但外部电路中的电子为设备（例如 EV 的电动机）供电。

An ideal battery provides a constant voltage to a circuit, powered by its conversion of stored chemical energy to electrical energy.

理想的电池为电路提供恒定电压，由存储的化学能转换为电能供电。

When the battery discharges, the process reverses, with electrons in the circuit powering a device—which in the case of an EV is its electric motor.

当电池放电时， 该过程则逆转，电路中的电子为设备供电——对于电动汽车来说， 就是它的电动机。