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公开(公告)号：EP3866254A1
公开(公告)日：2021-08-18
申请号：EP21153281.7
申请日：2021-01-25
发明人： Cho, Chang Hun , Kim, Sung Han , Kim, Joong Hun , Lee, Wook Su
IPC分类号： H01M50/528 , H01M50/533 , H01M50/536
摘要： A secondary battery having an improved current-collecting structure is provided. In an example embodiment, the secondary battery includes an electrode assembly (100a) including a plurality of unit electrode plates (100) each including a pair of non-coating portion tabs (140) at a side and a plurality of separators each located between the unit electrode plates (140); and the pair of non-coating portion tabs (140) are bent in opposite directions and welded to a current collector plate (300). The pair of non-coating portion tabs are bent in opposite directions to be welded to the current collector plate, and welding may be complementarily performed, thereby securing electrical stability.
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公开(公告)号：EP4213278A1
公开(公告)日：2023-07-19
申请号：EP23150588.4
申请日：2023-01-06
发明人： Yong, Jun Sun , Kim, Joong Hun , Lim, Hye Rin , Lee, Hyun Soo , Shin, Ho Jun , Cho, Chang Hun
IPC分类号： H01M50/103 , H01M50/133 , H01M50/169 , H01M50/176 , H01M50/342
摘要： A secondary battery includes: an electrode assembly; a can including a bottom part, a pair of side parts integrally formed with the bottom part and bent so as to extend from the bottom part, and a cover part coupled to the pair of side parts to face the bottom part and including a vent, the case accommodating the electrode assembly; and a pair of cap assemblies coupled to open ends of the can to seal the can.
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公开(公告)号：EP4366070A3
公开(公告)日：2024-07-24
申请号：EP23207261.1
申请日：2023-11-01
发明人： Kim, Joong Hun , Cho, Chang Hun , Lee, Wook Su
IPC分类号： H01M50/536 , H01M50/538 , H01M50/566
CPC分类号： H01M50/536 , H01M50/538 , H01M50/566 , Y02E60/10
摘要： A secondary battery (10,10') includes: a case (200, 300'); an electrode assembly (100, 100') in the case (200, 300') and comprising a first electrode plate (110) on which a first base tab (112, 120') is located at a first end in a longitudinal direction of the case (200, 300'), a second electrode plate (120) on which a second base tab (140') is located at a second end in the longitudinal direction of the case (200, 300'), and a separator (130) between the first electrode plate (110) and the second electrode plate (120); and a cap assembly (300) coupled to the case (200, 300'), and comprising a pair of collectors (330, 340) electrically connected to the first base tab (112, 120') and the second base tab (140'), respectively, wherein the first base tab (112, 120') and the second base tab (140') are laser welded to the pair of collectors (330, 340), respectively.
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公开(公告)号：EP4366070A2
公开(公告)日：2024-05-08
申请号：EP23207261.1
申请日：2023-11-01
发明人： Kim, Joong Hun , Cho, Chang Hun , Lee, Wook Su
IPC分类号： H01M50/536 , H01M50/538 , H01M50/566
CPC分类号： H01M50/536 , H01M50/538 , H01M50/566
摘要： A secondary battery (10,10') includes: a case (200, 300'); an electrode assembly (100, 100') in the case (200, 300') and comprising a first electrode plate (110) on which a first base tab (112, 120') is located at a first end in a longitudinal direction of the case (200, 300'), a second electrode plate (120) on which a second base tab (140') is located at a second end in the longitudinal direction of the case (200, 300'), and a separator (130) between the first electrode plate (110) and the second electrode plate (120); and a cap assembly (300) coupled to the case (200, 300'), and comprising a pair of collectors (330, 340) electrically connected to the first base tab (112, 120') and the second base tab (140'), respectively, wherein the first base tab (112, 120') and the second base tab (140') are laser welded to the pair of collectors (330, 340), respectively.
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