BATTERY HEATING CIRCUIT

摘要

The present invention provides a battery heating circuit, comprising a switch unit (1), a switching control module (100), a damping element R1, an energy storage circuit, and an energy limiting circuit, wherein, the energy storage circuit is connected with the battery, and comprises a current storage element L1 and a charge storage element C1; the damping element R1, the switch unit (1), the current storage element L1, and the charge storage element C1 are connected in series; the switching control module (100) is connected with the switch unit (1), and is configured to control ON/OFF of the switch unit (1), so that the energy can flow to and fro between the battery and the energy storage circuit when the switch unit (1) switches on; the energy limiting circuit is configured to limit the magnitude of current flowing from the energy storage circuit to the battery. The battery heating circuit provided in the present invention can avoid the safety problem caused by overcurrent in the heating circuit, so as to protect the battery efficiently.