公开(公告)号：EP3641017A2

公开(公告)日：2020-04-22

申请号：EP18870996.8

申请日：2018-10-19

Applicant: LG Chem, Ltd.

Inventor： OH, Sei Woon ,  CHO, Sung Hwan ,  LIM, Soo-Hyun ,  WOO, Sun Hwak ,  PARK, Jinseo

IPC: H01M2/26 ,  H01M2/02

Abstract: A rechargeable battery includes an electrode assembly; a case comprising a sealing portion surrounding the electrode assembly; and a lead electrically connected to the electrode assembly and extending in a first direction, wherein the lead includes a first region in contact with the electrode assembly and located inside the case; a second region exposed to an outside of the case; and a third region located between the first region and the second region and overlapping the sealing portion of the case, wherein the third region has a width greater than the first region and the second region in a second direction and has a thickness smaller than the first region and the second region in a third direction, and wherein the second direction is perpendicular to the first direction, and the third direction is perpendicular to the first direction and the second direction.

公开(公告)号：EP3232497A1

公开(公告)日：2017-10-18

申请号：EP16740422.7

申请日：2016-01-21

Applicant: LG Chem, Ltd.

Inventor： LIM, Soo-Hyun ,  KIM, Dae-Hong ,  JEONG, Won-Hee ,  PARK, Tae-Jin

IPC: H01M4/131 ,  H01M10/052

CPC classification number: H01M4/131 ,  H01M4/405 ,  H01M4/485 ,  H01M10/052 ,  H01M2004/021 ,  H01M2004/027 ,  Y02E60/122 ,  Y02T10/7011

Abstract: The present disclosure relates to a lithium secondary battery using lithium titanium oxide (LTO) as a negative electrode active material. More specifically, the present disclosure relates to a secondary battery having improved input and output characteristics through the optimization of the pore ratio of the LTO.
The lithium secondary battery including the lithium titanium oxide negative electrode active material according to the present disclosure provides an effect of significantly improved output density through the maximization of reaction active sites with electrolyte due to a porous structure.

Abstract translation: 本公开涉及使用锂钛氧化物（LTO）作为负极活性材料的锂二次电池。 更具体地，本公开涉及通过优化LTO的孔隙率而具有改善的输入和输出特性的二次电池。 包括根据本公开的锂钛氧化物负极活性材料的锂二次电池通过由于多孔结构使得与电解质的反应活性位点最大化而提供显着提高的输出密度的效果。