Active equalization circuit, battery management system, and active equalization control method
By introducing communication redundancy design and watchdog mechanism into the active balancing circuit, the problems of direction confirmation difficulty and hardware failure impact in the active balancing topology are solved, achieving high reliability and low cost balancing control of the battery pack.
WO2026137847A1PCT designated stage Publication Date: 2026-07-02HANGZHOU BMSER TECH
Patent Information
- Authority / Receiving Office
- WO · WO
- Patent Type
- Applications
- Current Assignee / Owner
- HANGZHOU BMSER TECH
- Filing Date
- 2025-07-31
- Publication Date
- 2026-07-02
Smart Images
Figure CN2025111710_02072026_PF_FP_ABST
Abstract
An active equalization circuit, a battery management system, and an active equalization control method. The active equalization circuit comprises: a plurality of equalization modules (231-23n) that are cascaded, are respectively sequentially connected to at least one group of batteries in a battery pack (240), and are configured to control energy equalization between the at least one group of batteries; an analog front-end sampling module (220), connected to a first enable port and a first I2C communication port of a first-stage equalization module (231) among the plurality of cascaded equalization modules (231-23n), and configured to read operating parameters of the plurality of equalization modules (231-23n) from registers of the plurality of equalization modules (231-23n), so as to monitor operating states of the plurality of equalization modules (231-23n), wherein the operating parameters comprise an equalization direction parameter, and at least one of a current parameter and a flag bit parameter.
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