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Global energy storage is developing at a fast pace, moving towards "new energy storage" parity

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In recent years, in order to cope with climate change and realize energy transformation, many countries vigorously develop renewable energy. Compared with traditional fossil energy, renewable energy generation generally has intermittent and fluctuating problems, which need to rely on energy storage technology to regulate.

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Analysis of the inconsistency problem of Li-ion battery packs | Part 2

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The reasons for inconsistency in battery formation are mainly the initial differences between single cells and the differences in structure, usage conditions, and environment after battery formation. To alleviate the problems of performance degradation and life reduction brought by battery formation, we can optimize the manufacturing process of batteries to reduce the initial differences of batteries; screen the batteries before battery formation, and group the batteries with less inconsistency; fully consider the influence of connection methods and structures on inconsistency when combining battery group systems; and carry out reasonable battery management, effective equalization as well as thermal management in the process of use to Reduce the inconsistency caused by different usage conditions. Among the technologies to improve battery pack consistency, BMS and thermal management technologies are relatively mature, while SOC estimation accuracy and equalization effect need to be further improved.

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