Jones Day
Battery heating circuits and methods using voltage inversion and freewheeling circuit components
Certain embodiments of the present invention provide a battery heating circuit, comprising a switch unit 1, a switching control module 100, a damping component R1, an energy storage circuit, a freewheeling circuit 20, and an energy superposition unit; the energy storage circuit is configured to connect with the battery to form a loop, and comprises a current storage component L1 and a charge storage component C1; the damping component R1, the switch unit 1, the current storage component L1, and the charge storage component 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 as to control the energy flowing between the battery and the energy storage circuit; the energy superposition unit is connected with the energy storage circuit.
BYD Company Limited
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Wenhui Xianyin Wei Yaochuan Wenjin Qinyao
Xu Li Feng Han Xia Yang