Effect of Separator Adhesive Layer Materials on the Safety of Lithium Iron Phosphate Battery

LIU Jingju; CHEN Luojia; WANG Jiangfeng; CHEN Baohui; WU Chuanping

doi:10.3969/j.issn.1008-0198.2025.05.006

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Effect of Separator Adhesive Layer Materials on the Safety of Lithium Iron Phosphate Battery

更新时间：2025-12-08

- Effect of Separator Adhesive Layer Materials on the Safety of Lithium Iron Phosphate Battery
- Vol. 45, Issue 5, Pages: 41-46(2025)
- 作者机构：
  
  1. 电网防灾减灾全国重点实验室,湖南,长沙,410129
  2. 国网湖南省电力有限公司防灾减灾中心,湖南,长沙,410129
- 作者简介：
- 基金信息：
- DOI：10.3969/j.issn.1008-0198.2025.05.006
  CLC： M911
- Published Online：11 November 2025，
  
  Published：11 November 2025
- 稿件说明：
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刘晶菊, 陈罗甲, 王江峰, 陈宝辉, 吴传平. 隔膜胶层材料对磷酸铁锂电池安全性的影响[J]. 湖南电力, 2025, 45(5): 41-46.

LIU Jingju, CHEN Luojia, WANG Jiangfeng, et al. Effect of Separator Adhesive Layer Materials on the Safety of Lithium Iron Phosphate Battery[J]. 2025, 45(5): 41-46.
刘晶菊, 陈罗甲, 王江峰, 陈宝辉, 吴传平. 隔膜胶层材料对磷酸铁锂电池安全性的影响[J]. 湖南电力, 2025, 45(5): 41-46. DOI： 10.3969/j.issn.1008-0198.2025.05.006.

LIU Jingju, CHEN Luojia, WANG Jiangfeng, et al. Effect of Separator Adhesive Layer Materials on the Safety of Lithium Iron Phosphate Battery[J]. 2025, 45(5): 41-46. DOI： 10.3969/j.issn.1008-0198.2025.05.006.

摘要

针对储能用280 A·h磷酸铁锂电池的安全性问题

对比分析聚偏氟乙烯（poly(vinylidene fluoride)

PVDF）与聚甲基丙烯酸甲酯（polymethyl methacrylate

PMMA）作为隔膜胶层材料时

在过充、外部加热及针刺滥用条件下对电池安全性能的影响。结果表明

采用PVDF胶层的电池在三种滥用工况下均表现出更优的安全特性：安全阀开启时间延迟0.1~7.5 min

电压突降时间延迟0.1~10.5 min

热失控后最高温度分别降低了11 ℃、1.5 ℃、16.7 ℃

最大温升速率降低0.11~3.18 ℃/s。该研究为储能电池隔膜材料选型及安全性能优化提供关键数据支撑。

Abstract

To address the safety issues of 280 A·h lithium iron phosphate batteries for energy storage

a comparative analysis of the effects of polyvinylidene fluoride (PVDF) and polymethyl methacrylate (PMMA) as separator adhesive layer materials on the safety performance of batteries under overcharging

external heating

and needle-puncture abuse conditions is performed. The results show that batteries with PVDF adhesive layers exhibit superior safety characteristics under all three abuse conditions: the activation time of the safety valve is delayed by 0.1~7.5 minutes

and the voltage drop time is postponed by 0.1-10.5 minutes. Following thermal runaway

the maximum temperature is decreased by 11℃

1.5℃

and 16.7℃

respectively

while the maximum temperature rise rate is reduced by 0.11~3.18℃/s. This study provides critical experimental data for separator material selection and safety optimization in energy storage batteries.

关键词

Keywords

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