Improved power battery insulation resistance detection method
By using an insulation monitoring module in the insulation resistance detection of power batteries, including the positive electrode, negative electrode detection circuit and the grounding circuit, the problem of low hardware reliability in traditional methods is solved, and higher detection accuracy and hardware reliability are achieved.
Patent Information
- Application Number
- CN202411918874.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-25
- Publication Date
- 2025-05-13
AI Technical Summary
In the traditional power battery insulation resistance detection method, it is necessary to use ADC sampling chips for the high-voltage positive bus terminal and negative bus terminal respectively, resulting in a reduced hardware reliability.
The improved insulation resistance detection method of the power battery is used to monitor the insulation resistance of the power battery through the insulation monitoring module, including a positive electrode detection circuit, a negative electrode detection circuit and a grounding circuit. The positive electrode and negative electrode grounding voltages and equivalent resistance of the power battery are obtained through these circuits, and the insulation resistance of the positive electrode and the negative electrode are then calculated.
This method can separate the high-voltage and low-voltage parts independently of the BMS motherboard of the power battery, enhance hardware reliability, simplify circuit design, and reduce hardware costs.
Smart Images
Figure CN119986129A_ABST