A battery cluster charging and discharging control method and device and energy storage system

By monitoring the voltage of individual cells in real time and controlling the switching in and out according to the battery pack conditions, and by combining predictive models to optimize the charging and discharging of the battery cluster, the problem of frequent switching out caused by differences in individual cells in the battery cluster is solved, thereby improving the system's operating efficiency and power utilization.

CN122159462APending Publication Date: 2026-06-05SYL (NINGBO) BATTERY CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
SYL (NINGBO) BATTERY CO LTD
Filing Date
2026-01-13
Publication Date
2026-06-05

AI Technical Summary

Technical Problem

Existing technologies frequently cut off individual cells in battery clusters due to performance differences, affecting system operation. Furthermore, existing cutting-off strategies fail to effectively account for minute differences, leading to increased equipment losses.

Method used

By acquiring the voltage of individual cells in real time, it is determined whether the battery pack meets the conditions for cutting out or cutting in, and the cutting in or cutting out of the battery pack is controlled to avoid frequent switching. A predictive model is used to predict the cluster voltage after the battery pack is cut out, and the charging and discharging process is optimized.

Benefits of technology

It improves the system's trouble-free operating time, reduces equipment wear and tear, and increases the overall charge and discharge capacity of the cluster.

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Abstract

The application relates to a battery cluster charging and discharging control method and device and an energy storage system, wherein the battery cluster charging and discharging control method comprises the following steps: acquiring the voltages of single battery cells in real time during the charging and discharging process of the battery cluster; judging whether a battery pack meets preset cut-out or cut-in conditions based on the voltages of the single battery cells; if the cut-out condition is met, the corresponding battery pack is controlled to be cut out; if the cut-in condition is met, the corresponding battery pack is controlled to be cut in, so that the battery pack is prevented from being frequently cut out at the end of the charging and discharging, the system fault-free operation time is prolonged, and the equipment loss caused by frequent switching of the system is reduced. Meanwhile, the battery pack cut out and then placed is cut in again under the condition of meeting the cut-in condition, so that the charging and discharging capacity of the whole cluster is improved.
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