US 11,955,665 B2
Secondary battery and method for manufacturing the same
Ha Young Heo, Daejeon (KR); Duk Hyun Ryu, Daejeon (KR); and Hyoung Kwon Kim, Daejeon (KR)
Assigned to LG ENERGY SOLUTION, LTD., Seoul (KR)
Appl. No. 17/773,038
Filed by LG Energy Solution, Ltd., Seoul (KR)
PCT Filed Oct. 29, 2020, PCT No. PCT/KR2020/014950
§ 371(c)(1), (2) Date Apr. 29, 2022,
PCT Pub. No. WO2021/086078, PCT Pub. Date May 6, 2021.
Claims priority of application No. 10-2019-0138987 (KR), filed on Nov. 1, 2019; and application No. 10-2020-0139770 (KR), filed on Oct. 26, 2020.
Prior Publication US 2024/0047838 A1, Feb. 8, 2024
Int. Cl. H01M 50/538 (2021.01); H01M 50/531 (2021.01); H01M 50/533 (2021.01); H01M 50/536 (2021.01); H01M 50/54 (2021.01)
CPC H01M 50/538 (2021.01) [H01M 50/531 (2021.01); H01M 50/533 (2021.01); H01M 50/536 (2021.01); H01M 50/54 (2021.01)] 15 Claims
OG exemplary drawing
 
1. A secondary battery comprising:
an electrode assembly having a structure in which a first electrode sheet and a second electrode sheet are stacked and wound with a separation sheet interposed therebetween, wherein a first electrode tab protrudes in the first electrode sheet, and a second electrode tab protrudes in the second electrode sheet;
a battery can configured to accommodate the electrode assembly therein; and
a connection part provided above or below the electrode assembly and facing the electrode assembly,
wherein the connection part comprises:
a first area made of an electrically conductive gel material; and
a second area attached to the first area and made of an electrically insulating material, and
wherein the second area forms at least a portion of a top surface of the connection part, and at least a portion of the first electrode tab or the second electrode tab is inserted into the first area of the connection part.