A cell data space-time joint compression method and device

By employing a spatiotemporal joint compression method for battery cell data and dynamically determining the priority of time and space compression, the problems of non-real-time data transmission and excessive computational burden in large-scale energy storage systems are solved, achieving efficient data compression and reliability while meeting real-time requirements.

CN122419477APending Publication Date: 2026-07-17
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Filing Date
2026-04-28
Publication Date
2026-07-17

AI Technical Summary

Technical Problem

Existing technologies in large-scale energy storage systems suffer from communication bandwidth bottlenecks, edge storage pressure, unutilized cell consistency, and static time characteristics, resulting in non-real-time data transmission and excessive computational burden.

Method used

A spatiotemporal joint compression method for battery cell data is adopted. By judging the time and space compression conditions, time-compressed frames, space-compressed frames or uncompressed frames are generated. Compression priority is dynamically determined. Time compression achieves a high compression ratio when the situation is stable, while space compression achieves effective compression when the battery cell consistency is good. Under abnormal operating conditions, it automatically reverts to the uncompressed mode to ensure data integrity.

Benefits of technology

Under the condition of limited MCU resources at the edge, this solution balances compression efficiency and data reliability, solves the problem of the lack of frame-level adaptive degradation capability in existing solutions, meets real-time requirements, and reduces computational overhead.

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Abstract

本发明公开了一种电芯数据时空联合压缩方法及装置,应用于电池储能能量管理系统,该系统包括由多个电芯串联构成的电池Pack,所述方法包括:获取目标电池Pack各电芯的电压采样值,与参考基准帧比较生成各电芯的时间维差值,判断是否满足预设的时间压缩条件;若是则生成时间压缩帧并记录时间维差值,不更新参考基准帧;若否则计算各电芯相对于本电池Pack基准电压的空间维差值,并判断是否满足预设的空间压缩条件;若是则生成空间压缩帧并记录空间维差值,并更新参考基准帧为空间压缩帧;若否则生成不压缩帧,记录各电芯的电压采样值,并更新参考基准帧为不压缩帧。本发明通过自适应三级压缩,在边缘端MCU资源受限的条件下兼顾了压缩效率与数据可靠性。
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