The quality and safety status of Li-ion battery products are introduced,and the possible safety risks of product quality are analyzed.Analysis of the safety performance of 60 batches of 18650/26650 type Li-ion battery products randomly inspected in the market is conducted.Items of external short-circuit at normal temperature,overcharge,and thermal abuse are tested.Out of 60 batches of 18650/26650 type Li-ion battery products,8 batches with defects in external short-circuit at normal temperature issues are detected,with a problem detection rate of 13.3%.A batch with defects in overcharge projects is detected,with a problem detection rate of 1.7%.The thermal abuse project of 4 batches has been detected,indicating a risk of fire and explosion,the problem detection rate is 6.7%.Perhaps the reasons of existing problems are:the lack of safety protection measures in the process design or production of Li-ion battery,the lack of strict implementation of relevant standards for Li-ion battery,and the inappropriate usage habits and poor safety awareness of consumers.
关键词
锂离子电池/18650型电池/26650型电池/质量安全/风险监测/短路/过充电/热滥用
Key words
Li-ion battery/18650 type battery/26650 type battery/quality and safety/risk monitoring/short-circuit/overcharge/thermal abuse
维普
万方数据