HEATING SYSTEM, HEATING METHOD AND APPARATUS, AND ELECTRICAL DEVICE

This application provides a heating system, a heating method and apparatus, and an electric device. The heating system includes a first input end, a second input end, a first battery module, a second battery module, a first switch, a second switch, and a control unit, where the first input end and the second input end are configured to connect to an external input power source. The first switch is connected between a first terminal of the first battery module and a first terminal of the second battery module, a second terminal of the first battery module is connected to a second terminal of the second battery module, the second switch is connected between the first input end and the first terminal of the second battery module, and the second input end is connected to the first terminal of the first battery module. The control unit is connected to the first switch and the second switch, and the control unit is configured to control the first switch and the second switch to be turned on or off, to heat the first battery module and the second battery module through the input power source. In the foregoing manner, a requirement for the heating power source is lowered, thereby improving practicability.