A multi-battery cluster management method and system

CN122292602APending Publication Date: 2026-06-26SHANGHAI ROBESTEC ENERGY CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
SHANGHAI ROBESTEC ENERGY CO LTD
Filing Date
2026-02-25
Publication Date
2026-06-26

AI Technical Summary

Technical Problem

Existing multi-cell cluster systems suffer from low automation, insufficient safety, weak fault handling capabilities, and lack of dynamic balancing, which leads to circulating currents and electrical shocks when cell clusters are connected in parallel, affecting system availability and battery life.

Method used

The system is initialized and self-tested using a power control unit (PCU). Based on the self-test results and the status of the energy storage converter (PCS), the battery cluster is automatically controlled. Power is supplied through a voltage pre-synchronization mechanism, and an isolation process of first reducing power and then disconnecting is adopted when the status is abnormal. Dynamic voltage balancing is achieved by combining intelligent power distribution strategies.

Benefits of technology

It achieves full lifecycle automated control of the electrochemical energy storage system, improves system availability and safety, avoids electrical shocks, extends battery life, and reduces circulating current and thermal stress through dynamic balancing.

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Abstract

This invention discloses a multi-battery cluster management method and system, belonging to the field of power system automation technology. The method includes: after the battery management system (BMS) is powered on, the power control unit (PCU) in the BMS performs system initialization, reads configuration parameters, and performs a system-level self-test on the BMS to obtain the self-test result; based on the self-test result, configuration parameters, and the status of the energy storage converter (PCS) that coordinates with the BMS, it determines whether to start the automatic control process of the battery cluster; after starting the automatic control process of the battery cluster, the PCU traverses each battery cluster in a preset order to obtain the status information of each battery cluster, and filters target battery clusters that meet the conditions based on the status information of each battery cluster; powering on each target battery cluster based on a voltage pre-synchronization mechanism; during the operation of the BMS, the PCU judges the status of each target battery cluster based on the battery cluster status information reported by the battery cluster controller corresponding to each target battery cluster; when the first battery cluster with an abnormal status is detected, the first battery cluster is isolated by first reducing power and then disconnecting the circuit.
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