US 11,909,018 B2
Battery pack
Shengchang Guo, Chongqing (CN); Qijun Liang, Chongqing (CN); Jianxiong Zhao, Chongqing (CN); Xing Wang, Chongqing (CN); Xiujun Long, Chongqing (CN); Zhankui Ren, Chongqing (CN); Zimu Liao, Chongqing (CN); Renzhang Xiao, Chongqing (CN); Xunzhao Xia, Chongqing (CN); Jian He, Chongqing (CN); Shuang Zhang, Chongqing (CN); and Guangyi Liu, Chongqing (CN)
Assigned to CHONGQING JINKANG POWER NEW ENERGY CO., LTD., Chongqing (CN)
Filed by CHONGQING JINKANG POWER NEW ENERGY CO., LTD., Chongqing (CN)
Filed on May 24, 2021, as Appl. No. 17/328,357.
Claims priority of application No. 202010447986.2 (CN), filed on May 25, 2020; application No. 202010448576.X (CN), filed on May 25, 2020; application No. 202020891101.3 (CN), filed on May 25, 2020; and application No. 202020891817.3 (CN), filed on May 25, 2020.
Prior Publication US 2021/0367286 A1, Nov. 25, 2021
Int. Cl. H01M 10/613 (2014.01); H01M 10/6556 (2014.01); H01M 10/6568 (2014.01); H01M 10/658 (2014.01); A62C 3/16 (2006.01)
CPC H01M 10/613 (2015.04) [A62C 3/16 (2013.01); H01M 10/658 (2015.04); H01M 10/6556 (2015.04); H01M 10/6568 (2015.04)] 13 Claims
OG exemplary drawing
 
1. A battery pack, comprising:
battery cells;
a coolant tank for storing a coolant;
a cooling circuit in communication with the coolant tank;
a driving device for driving the coolant to flow;
a fire extinguishing pipeline connected to the cooling circuit, wherein the fire extinguishing pipeline comprises a spraying pipe extending above the battery cells and forming an opening after being heated; and
partitions provided between the battery cells and between battery modules, wherein the partitions have a characteristic of absorbing the coolant, the partitions comprise a heat insulation layer body for delaying heat spread, and the heat insulation layer body comprises an absorption layer for absorbing the coolant and a reinforcing layer, and
wherein:
the absorption layer is disposed on one single side of the reinforcing layer and faces the battery cells; or
the heat insulation layer body further comprises a second absorption layer and the absorption layer and the second absorption layer are disposed on opposite sides of the reinforcing layer.