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AssigneeContemporary Amperex Technology Co., Limited
InventorsWei Zhang, Zhimin Dan, Jinbo Cai, Yizhen Hou, Meilin Chen
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This application discloses a protection circuit associated with a battery management system (BMS). The protection circuit includes a first protection module and a freewheeling module. The first protection module is connected in parallel to a first switch module of the BMS, and the freewheeling module is connected in parallel to a load module of the BMS. The first protection module switches to a charging state when the first switch module is turned off to stabilize a voltage between a first terminal of the first switch module and a second terminal of the first switch module. The freewheeling module is turned on when the first switch module is turned off to stabilize a voltage between the first switch module and the second switch module. The protection circuit mitigates risks of breakdown of the first switch module, and prevents a parasitic inductance from limiting a switching frequency of the first switch module.
A protection circuit, comprising a first protection module and a freewheeling module, wherein the first protection module is connected in parallel to a first switch module in a main circuit of a battery management system, the freewheeling module is connected in parallel to a load module in the main circuit of the battery management system, the first switch module, the load module, and a second switch module in the main circuit of the battery management system are serially-connected, and the first switch module is a switching transistor;
A battery management system, comprising:
Dependencies are inferred from the claim text.