Patent ID: 11962174
Assignee: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H | IPC H

Claim 0:
1. 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;
the first protection module is configured to switch the first protection module to a charging state when the first switch module is turned off, so as to stabilize a voltage between a first terminal of the first switch module and a second terminal of the first switch module; and
the freewheeling module is configured to switch on when the first switch module is turned off, so as to stabilize a voltage between the first switch module and the second switch module in the main circuit of the battery management system.