US 12,148,874 B2
Rechargeable battery
Byongchul Woo, Yongin-si (KR); and Seungjun Myoung, Yongin-si (KR)
Assigned to Samsung SDI Co., Ltd., Yongin-si (KR)
Appl. No. 16/329,409
Filed by Samsung SDI Co., Ltd., Yongin-si (KR)
PCT Filed Aug. 11, 2017, PCT No. PCT/KR2017/008720
§ 371(c)(1), (2) Date Feb. 28, 2019,
PCT Pub. No. WO2018/048109, PCT Pub. Date Mar. 15, 2018.
Claims priority of application No. 10-2016-0116729 (KR), filed on Sep. 9, 2016.
Prior Publication US 2019/0198851 A1, Jun. 27, 2019
Int. Cl. H01M 10/04 (2006.01); H01M 10/42 (2006.01); H01M 50/579 (2021.01)
CPC H01M 10/0431 (2013.01) [H01M 10/42 (2013.01); H01M 50/579 (2021.01)] 9 Claims
OG exemplary drawing
 
1. A rechargeable battery comprising:
an electrode assembly which is wound and comprises a first electrode, a second electrode, and a separator between the first electrode and the second electrode;
a casing which accommodates the electrode assembly;
a first electrode tab connected to a non-coated portion of the first electrode;
a second electrode tab connected to a non-coated portion of the second electrode on a side surface of the non-coated portion of the second electrode facing a center of the electrode assembly; and
a first insulating tape positioned at a winding start portion of the electrode assembly and attached to the non-coated portion of the first electrode so as to at least cover a center of a first curved portion which is curvedly formed as the electrode assembly is wound,
wherein the winding start portion comprises a length of the non-coated portion of the first electrode at which the first insulating tape is not attached prior to a second length of the non-coated portion of the first electrode at which the first insulating tape is attached;
wherein, at the winding start portion, a non-coated end of the second electrode is longer than a non-coated end of the first electrode and the non-coated end of the second electrode and the non-coated end of the first electrode face the same direction;
wherein a melting point of the first insulating tape is higher than a melting point of the separator; and
wherein the first insulating tape is adhered to the non-coated portion of the first electrode and not adhered to the separator.