Multi-BMS cascade charge and discharge circuit
By using a multi-BMS cascaded charging and discharging circuit, and utilizing battery voltage acquisition and MOSFET switching circuit control, balanced charging and discharging of the battery pack is achieved, solving the overcharging and over-discharging problems caused by battery pack imbalance, extending equipment life and improving efficiency.
CN224267060UActive Publication Date: 2026-05-22WEIHAI BEIYANG PHOTOELECTRIC INFORMATION TECH
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Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- WEIHAI BEIYANG PHOTOELECTRIC INFORMATION TECH
- Filing Date
- 2025-06-04
- Publication Date
- 2026-05-22
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Figure CN224267060U_ABST
Abstract
The utility model relates to the technical field of electric power energy storage equipment manufacturing, in particular to a charging and discharging circuit for multi-BMS (Battery Management System) cascading, which is suitable for a multi-battery PACK cascading scene and can balance the charging and discharging process of each battery PACK so as to effectively prolong the service life of equipment and improve the working efficiency. The battery charger is provided with a battery voltage acquisition circuit (1), a charging voltage acquisition circuit (2), a microprocessor (3), a DAC output circuit (4) and an MOS tube switching circuit (5), the MOS tube switching circuit (5) is connected between a battery and the charger, the control signal end of the MOS tube switching circuit (5) is connected with the output end of the DAC output circuit (4), and the control signal end of the MOS tube switching circuit (5) is connected with the output end of the DAC output circuit (4). The microprocessor (3) is respectively connected with the battery voltage acquisition circuit (1), the charging voltage acquisition circuit (2) and the DAC output circuit (4).
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