Abstract: The present invention discloses an electric pump for a power battery thermal management system, including a pump body; a motor mounted in the pump body; an impeller mounted in the pump body and driven by the motor, and a liquid heating device mounted in the pump body and configured to heat a liquid sucked from a suction inlet by the impeller and discharged from a discharge outlet.

Abstract: A matching authentication method for wireless communication equipment comprises that: a device at the transmitting end sends a matching request (S101) to a device at the receiving end; the device at the transmitting end receives the response messages feedback from the device at the receiving end, and the response message carry with feature codes (S102); the device at the transmitting end obtains the feature codes and takes the feature codes as the authentication and authorization codes communicating with the receiving end. The invention also provides a wireless communication device with the function of matching authentication correspondingly. The wireless communication device comprises a memory unit, a communication unit, and an authentication and authorization unit and a feature code updating unit. The invention also provides a wireless communication system with the function of matching authentication correspondingly.