公开(公告)号：EP4088925A1

公开(公告)日：2022-11-16

申请号：EP21747141.6

申请日：2021-01-27

申请人： LG Energy Solution, Ltd. ,  Konkuk University Industrial Cooperation Corp.

发明人： YOON, Yeo-Min ,  JUNG, Bum-Young ,  HA, Jeong-Ho ,  KIM, Ki-Jae ,  AHN, Yong-Keon ,  LEE, Kyu-Bin

IPC分类号： B32B27/18 ,  H01M50/24 ,  C09K21/14 ,  A62D1/00 ,  A62C3/16 ,  B32B27/28 ,  C08K3/22 ,  C08K3/16 ,  C08K3/016

摘要： There are provided a flame retardant element for suppressing flame propagation when a fire occurs during the use of a lithium secondary battery, thereby ensuring safety of the secondary battery while in use, a method for manufacturing the flame retardant element, and a secondary battery module and a secondary battery pack comprising the flame retardant element. The proposed flame retardant element is a composite pad having a stack of at least two polymer resin single layers including fire extinguishing materials having different fire extinguishing and flame retardant mechanisms, the composite pad includes a first polymer resin single layer and a second polymer resin single layer, and the first polymer resin single layer includes the fire extinguishing material which takes effect in a lower temperature range than the second polymer resin single layer.