储能科学与技术 ›› 2023, Vol. 12 ›› Issue (2): 579-584.doi: 10.19799/j.cnki.2095-4239.2022.0547

• 储能测试与评价 • 上一篇    下一篇

储能软包大模组结构稳定性

盛军(), 付一民, 俞会根   

  1. 北京卫蓝新能源科技有限公司,北京 102402
  • 收稿日期:2022-09-28 修回日期:2022-10-18 出版日期:2023-02-05 发布日期:2023-02-24
  • 通讯作者: 盛军 E-mail:jsheng@welion.cn
  • 作者简介:盛军(1982—),男,硕士,高级工程师,研究方向为动力及储能电池系统,E-mail:jsheng@welion.cn

Structure simulation of large soft pack module for energy storage

Jun SHENG(), Yimin FU, Huigen YU   

  1. Beijing Welion New Energy Technology Co. , Ltd. , Beijing 102402, China
  • Received:2022-09-28 Revised:2022-10-18 Online:2023-02-05 Published:2023-02-24
  • Contact: Jun SHENG E-mail:jsheng@welion.cn

摘要:

随着新能源产业的高速发展与“源网荷储一体化”概念的提出,锂离子电池在储能领域得到了广泛的应用。为控制成组成本,应用于储能领域的电池模组也朝着高电压、大容量的方向发展,这对锂离子电池成组技术,尤其是软包电池成组技术提出了更高的要求。本工作通过理论计算及有限元分析的方法,对储能软包大模组进行膨胀力分析,目的在于全寿命周期内考察模组的结构稳定性,结果表明在储能软包大模组设计过程中,泡棉的选型、端板的材料、端板固定螺栓的数量与强度非常重要,良好的设计方案可以降低甚至避免电池膨胀力对模组结构产生的影响,提高模组的结构稳定性,使模组具有更好的安全性以及更长的使用寿命。

关键词: 储能, 软包电池, 电池模组, 稳定性, 膨胀力

Abstract:

With the rapid development of the new-energy industry and the concept of "integration of source network, charge, and storage", lithium-ion batteries have been widely used for energy storage. To control the group cost, the battery modules applied in the field of energy storage are developing towards high voltage and large capacity, which puts forward higher requirements for the grouping technique of lithium-ion batteries, especially for soft-pack batteries. In this paper, based on the theoretical calculation and finite element analysis method, the expansion force analysis of the soft package large module for energy storage is carried out to investigate the structural stability of the module in the whole life cycle. The results show that the selection of foam, the material of the end plates, and the number and strength of the fixing bolts used for the end plates are important factors in the design process of the large soft pack module for energy storage. A supreme design scheme can effectively reduce or even avoid the influence of the battery expansion force on module structures, improve the structural stability of the module, and produce modules with better safety and longer service life.

Key words: energy storage, soft pack battery, battery module, stability, expansibility force

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