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公开(公告)号：EP4170800A1
公开(公告)日：2023-04-26
申请号：EP21903848.6
申请日：2021-12-08
发明人： LIM, Hun-Hee , KIM, Sang-Hun , KANG, Min-Hyeong , YU, Hyung-Kyun
IPC分类号： H01M50/30 , H01M50/197 , H01M50/188 , H01M50/557
摘要： Disclosed is a secondary battery including: an electrode assembly including electrode sheets and a separator interposed between the electrode sheets; a pouch-like battery casing in which the electrode assembly is received; an electrode lead connected to the electrode assembly and protruding out from the battery casing; and a lead film covering the electrode lead and interposed between the electrode lead and the battery casing, wherein the lead film includes an outer layer covering the electrode lead and an inner layer disposed inside of the outer layer, and the inner layer includes a material having a higher air permeability as compared to the outer layer.
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公开(公告)号：EP4106090A1
公开(公告)日：2022-12-21
申请号：EP22736936.0
申请日：2022-01-11
发明人： LIM, Hun-Hee , KIM, Sang-Hun , HWANG, Soo-Ji , KANG, Min-Hyeong , YU, Hyung-Kyun
IPC分类号： H01M50/184 , H01M50/193 , H01M50/178 , H01M50/30
摘要： Disclosed is a battery cell, which includes a battery case having an accommodation portion in which an electrode assembly is mounted, and a sealing portion formed by sealing an outer periphery thereof by heat fusion; an electrode lead electrically connected to an electrode tab included in the electrode assembly and protruding out of the battery case via the sealing portion; and a lead film located at a portion corresponding to the sealing portion in at least one of an upper portion and a lower portion of the electrode lead, wherein the lead film has a dented portion recessed toward an inside of the battery case, and the dented portion is opened toward an outside of the battery case.
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