Energy storage system, control method, apparatus, and medium

By obtaining the charge difference under charging and discharging states, the balancing parameters are calculated, which solves the problem of capacity imbalance among batteries in the energy storage battery cluster and achieves more efficient balancing adjustment.

CN122246947APending Publication Date: 2026-06-19SHENZHEN CLOU ELECTRONICS
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
SHENZHEN CLOU ELECTRONICS
Filing Date
2025-06-05
Publication Date
2026-06-19

AI Technical Summary

⚠Technical Problem

In existing technologies, differences in parameters such as temperature, capacity, impedance, and self-discharge rate among energy storage battery clusters lead to an imbalance in the remaining battery capacity, affecting the overall performance and lifespan of the battery clusters. Furthermore, existing equalization adjustment methods cannot accurately calculate the specific differences, resulting in low equalization efficiency.

⚗Method used

By obtaining the charge difference of the energy storage battery in the charging and discharging states, the balancing parameters can be calculated to achieve quantitative balancing adjustment of the energy storage battery, thereby improving accuracy and efficiency.

🎯Benefits of technology

By quantitatively calculating the difference in charge between the charging and discharging of energy storage batteries, the capacity differences between batteries can be accurately identified, the equalization time can be extended, and the accuracy and efficiency of equalization adjustment can be improved.

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Abstract

This invention discloses an energy storage system, a control method, an apparatus, and a medium. The energy storage system includes a battery cluster, which comprises multiple energy storage batteries connected in series. The control method includes: acquiring the amount of charging charge required for the voltage of each energy storage battery in the battery cluster to rise to a target charging voltage when the battery cluster is in a charging state; acquiring the amount of discharging charge required for the voltage of each energy storage battery in the battery cluster to drop to a target discharging voltage when the battery cluster is in a discharging state; calculating an equalization parameter for each energy storage battery based on the charge difference between the charging charge and the discharging charge; and performing equalization adjustment on each energy storage battery based on the equalization parameter. This invention can accurately identify the differences between energy storage batteries, thereby improving the efficiency and accuracy of equalization adjustment.
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