Safety research of large-capacity energy storage batteries
DANG Yanbao
CHEN Zhongjun
CHEN Haiting
LOU Yuwan
Abstract：This study utilized a Polyethylene(PE)base membrane with a thickness of 9 μm and a porosity of 45%to compare the performance differences between the self-developed 430 Ah large-capacity battery and the commonly used 280 Ah energy storage battery.The test data indicates that the 430 Ah battery,equipped with a lamination structure and separator coating design,outperforms the 280 Ah battery with a winding structure in electrical performance and exhibits significant advantages in safety,with a temperature rise of less than 3℃after needle puncture.Additionally,the 430 Ah battery maintains a capacity retention rate of 98.5%after 450 cycles,which is 3%higher than the 280 Ah battery.The test data demonstrates that the optimized design of lamination and separator coating ensures the safety of the battery,enhances its capacity and performance,and achieves a higher cycle life.This research provides new insights for the development of high-capacity energy storage batteries.
Keywords：large-capacityenergy storage batteriessafetylamination structure
Publication Date：2025-06-25
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：5( 161-165 )