Patent ID: 11876197
Assignee: BYD COMPANY LIMITED
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H  B  Y | IPC B  H

Claim 13:
14. The power battery heating apparatus according to claim 12, wherein the controller is further programmed to determine whether a heating condition of the power battery meets a preset condition;
identify that the heating condition of the power battery meets the preset condition, in a case of determining that a current working status of the motor is a non-driving state, and determining that a fault status of the power battery, a fault status of the three-phase alternating current motor, a fault status of a motor controller, and a fault status of a heat conduction loop all indicate that no fault exists; and
identify that the heating condition of the power battery does not meet the preset condition, in a case of determining that the current working status of the motor is a driving state, or determining that any fault status in the fault status of the power battery, the fault status of the three-phase alternating current motor, the fault status of the motor controller, and the fault status of the heat conduction loop indicates that there is a fault.