Research progress on nondestructive testing technology of lithium battery safety performance
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摘要: 锂电池具有能量密度大、自放电率低、循环寿命长等优点,在新能源汽车领域得到了广泛应用。受锂电池材料、生产工艺不够完善等因素影响,其存在一定安全隐患。概述了影响锂电池安全性能的因素,将锂电池存在的缺陷分为表面缺陷、电极缺陷以及内部缺陷3部分进行阐述,介绍了各部分缺陷的检测方法,并对锂电池安全性能的一体化检测进行概要评述。Abstract: Lithium batteries are widely used in the field of new energy vehicles because of their high energy density, low self discharge rate and long cycle life. Due to the imperfection of lithium battery materials, production processes and other problems, it is easy to have potential safety hazards. This paper summarizes the factors that affect the safety performance of lithium batteries, expounds the defects of lithium batteries into three parts: surface defects, electrode defects and internal defects, introduces the types of defects and appropriate detection methods, and makes a summary comment on the integrated detection of the safety performance of lithium batteries.
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Keywords:
- lithium ion battery /
- safety performance /
- nondestructive testing
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