Open AccessOvercharge experiment analysis of the LiFePO4/C battery with prelithiation technology
Author(s) -
Fei Gao,
Hui Dong,
Kai Yang,
Fenggang Zhao,
Longfei Yang,
Wang Guo-bao,
Shuping Wang,
Minghao Fan
Publication year - 2020
Publication title -
iop conference series. earth and environmental science
Language(s) - English
Resource type - Journals
eISSN - 1755-1307
pISSN - 1755-1315
DOI - 10.1088/1755-1315/619/1/012036
Subject(s) - overcharge , battery (electricity) , materials science , deformation (meteorology) , service life , automotive engineering , forensic engineering , nuclear engineering , engineering , composite material , thermodynamics , physics , power (physics)
Prelithiation technology can improve the service life of batteries, but whether it will affect the safety of batteries has not been studied. In this paper, the temperature differences between LiFePO 4 /C batteries with prelithiation technology and conventional LiFePO 4 /C batteries in overcharge test are analysed, the shell deformation values of these two types of batteries are compared, and the influence of battery capacity retention rate on overcharge safety of batteries is discussed. The analysis shows that there is no obvious difference in overcharge safety between two types of batteries, and batteries with prelithiation technology are similar to conventional batteries in terms of shell deformation value, the highest temperature of shell and the temperature fluctuation of flue gas escaping from pressure relief valve.