US 12,438,220 B2
Secondary battery comprising seal tape
Jeong Eon Park, Daejeon (KR); Roun Kim, Daejeon (KR); and Wook Hee Jang, Daejeon (KR)
Assigned to LG Energy Solution, Ltd., Seoul (KR)
Appl. No. 18/721,285
Filed by LG Energy Solution, Ltd., Seoul (KR)
PCT Filed Jul. 19, 2023, PCT No. PCT/KR2023/010382
§ 371(c)(1), (2) Date Jun. 18, 2024,
PCT Pub. No. WO2024/019513, PCT Pub. Date Jan. 25, 2024.
Claims priority of application No. 10-2022-0088822 (KR), filed on Jul. 19, 2022.
Prior Publication US 2025/0062463 A1, Feb. 20, 2025
Int. Cl. H01M 50/186 (2021.01); C09J 133/08 (2006.01); H01M 10/0587 (2010.01); H01M 50/184 (2021.01); H01M 50/193 (2021.01); H01M 50/197 (2021.01); H01M 50/198 (2021.01)
CPC H01M 50/186 (2021.01) [C09J 133/08 (2013.01); H01M 10/0587 (2013.01); H01M 50/184 (2021.01); H01M 50/193 (2021.01); H01M 50/197 (2021.01); H01M 50/198 (2021.01); C09J 2203/33 (2013.01); C09J 2301/122 (2020.08); C09J 2433/00 (2013.01); C09J 2475/006 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A secondary battery comprising:
an electrode assembly having a structure in which a positive electrode, a negative electrode, and a separator are in a wound state;
an electrolyte solution;
a seal tape having a base and an adhesive layer provided on one surface of the base; and
a can accommodating the electrode assembly and the electrolyte solution,
wherein the negative electrode is disposed along an outer circumferential surface of the electrode assembly,
wherein the seal tape is provided on the outer circumferential surface, and
wherein the adhesive layer is configured to expand when in contact with the electrolyte solution, and
wherein the seal tape is configured to detach from the outer circumferential surface of the electrode assembly, so as to increase a contact area between the negative electrode and the can.