US 12,068,109 B2
Electrochemical energy storage device
Dezhong Chen, Sichuan (CN); Junqiang Luo, Sichuan (CN); Guangyong Dong, Sichuan (CN); Jie Xiang, Sichuan (CN); and Fanghui Zhao, Sichuan (CN)
Assigned to AVX New Energy (Chengdu) Co., Ltd., Chengdu (CN)
Appl. No. 17/618,552
Filed by AVX New Energy (Chengdu) Co., Ltd, Sichuan (CN)
PCT Filed Jun. 8, 2020, PCT No. PCT/CN2020/094926
§ 371(c)(1), (2) Date Jun. 23, 2022,
PCT Pub. No. WO2020/248940, PCT Pub. Date Dec. 17, 2020.
Claims priority of application No. 201910502335.6 (CN), filed on Jun. 11, 2019.
Prior Publication US 2022/0336151 A1, Oct. 20, 2022
Int. Cl. H01G 11/80 (2013.01); H01G 11/18 (2013.01); H01G 11/74 (2013.01); H01G 11/82 (2013.01)
CPC H01G 11/80 (2013.01) [H01G 11/18 (2013.01); H01G 11/74 (2013.01); H01G 11/82 (2013.01)] 10 Claims
OG exemplary drawing
 
1. An electrochemical energy storage device, comprising:
a cover plate (4), comprising a lead-out bar (41) and a fixing plate (42), wherein the lead-out bar (41) is a conductor, the fixing plate (42) is an insulator, and the lead-out bar (41) vertically passes through the fixing plate (42) and is fixed thereon;
a housing (9), which is cylindrical and is provided with an opening at at least one end, wherein the insulating fixing plate (42) and the opening of the housing (9) are connected in a sealed manner by means of a sealing ring (2); and
a rolled core (7), provided in an inner cavity of the housing (9), wherein the rolled core (7) is conductively connected to the lead-out bar (41) by means of an upper connecting piece (6), and is conductively connected to another lead-out end of the housing (9) by means of a lower connecting piece (8); and characterized in that it further comprises:
a welding ring (1), conductively connected to the housing (9) by welding; and
a welding bar (3), conductively connected to the lead-out bar (41) of the cover plate (4) by welding, wherein the welding ring (1) and the welding bar (3) are provided on the same side of the housing (9).