US 12,347,617 B2
Electrochemical energy storage device
Guangyong Dong, Sichuan (CN); Dezhong Chen, Sichuan (CN); Junqiang Luo, Sichuan (CN); Jie Xiang, Sichuan (CN); and Fanghui Zhao, Sichuan (CN)
Assigned to KYOCERA AVX Components (Chengdu) Co., Ltd., Chengdu (CN)
Appl. No. 17/618,535
Filed by AVX New Energy (Chengdu) Co., Ltd, Sichuan (CN)
PCT Filed Jun. 8, 2020, PCT No. PCT/CN2020/094911
§ 371(c)(1), (2) Date Jun. 23, 2022,
PCT Pub. No. WO2020/248936, PCT Pub. Date Dec. 17, 2020.
Claims priority of application No. 201910502339.4 (CN), filed on Jun. 11, 2019.
Prior Publication US 2022/0344107 A1, Oct. 27, 2022
Int. Cl. H01G 11/80 (2013.01); H01G 11/14 (2013.01); H01G 11/74 (2013.01)
CPC H01G 11/80 (2013.01) [H01G 11/14 (2013.01); H01G 11/74 (2013.01)] 11 Claims
OG exemplary drawing
 
1. An electrochemical energy storage device, characterized in that it comprises: an upper connecting bar (4), a rubber piece (3) that has an insulating and sealing effect, a housing (7) and a rolled core (5); wherein the housing (7) is cylindrical and is provided with an opening at at least one end, and the rubber piece (3) and the housing (7) are sealedly connected by means of a waisted section (9) provided on the housing (7); the rolled core (5) is provided in an inner cavity of the housing (7); the upper connecting bar (4) comprising a bottom surface (42) including a cylinder (41) provided on one side of the bottom surface (42) wherein the cylinder (41) penetrates a first through hole of the rubber piece (3) and wherein the rubber piece (3) is sleeved on the cylinder (41) of the upper connecting bar (4) by means of the first through hole and wherein one end of the upper connecting bar (4) is conductively connected to a negative electrode welding piece (1), while the other end of the upper connecting bar (4) is conductively connected to the rolled core (5); the rolled core (5) is conductively connected to the housing (7) by means of a lower connecting piece (6); and a positive electrode welding piece (8) is conductively connected to the housing (7);
wherein a bakelite plate (31) is fixedly connected to one side of the rubber piece (3) and the rubber piece (3) has the same outer diameter as the bakelite plate (31); and
a fixing piece (2) is provided between the upper connecting bar (4) and the negative electrode welding piece (1) and the negative electrode welding piece (1) is conductively connected to the fixing piece (2).