Active equalization circuit based on winding switching and power supply
By adopting an active equalization circuit based on winding switching in the battery pack, the battery balance method has been solved, and the battery balance method has slowed the balance speed and low efficiency are achieved, which has achieved rapid equalization and efficient energy transfer, which has significantly improved the overall performance and service life of the battery pack.
Patent Information
- Application Number
- CN202510206806.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-21
- Publication Date
- 2025-06-27
AI Technical Summary
In the prior art, the battery balance method has problems of slow balance speed and low efficiency, especially in the case of uneven battery cell performance due to inconsistent manufacturing processes, environmental differences and aging in the battery pack.
The active equalization circuit based on winding switching is adopted, and the equalization control of a single or multiple adjacent batteries is achieved through multiple cascaded battery pack equalization modules, bidirectional isolated DC/DC converters and transformer winding switching mechanisms. By switching the number of winding turns, this solution expands the voltage adaptation range of the transformer, reduces the gain range, and thus improves the equalization efficiency.
It significantly improves the overall performance and service life of the battery pack, avoids the problems of slow balance speed and low efficiency, and achieves fast balance and efficient energy transfer.