公开(公告)号：EP4372863A2

公开(公告)日：2024-05-22

申请号：EP23194624.5

申请日：2023-08-31

申请人： Samsung SDI Co., Ltd.

发明人： Yeo, Ha Ram ,  Hwang, In Hyun ,  Kim, Bum Rae

IPC分类号： H01M10/0585 ,  H01M10/04 ,  H01M50/103 ,  H01M50/15 ,  H01M50/538 ,  H01M50/176 ,  H01M50/54 ,  H01M50/566 ,  H01M50/553 ,  H01M50/188 ,  H01M50/55 ,  H01M50/30 ,  H01M50/529 ,  H01M50/533 ,  H01M50/536 ,  H01M50/148

CPC分类号： H01M50/103 ,  H01M50/176 ,  H01M50/536 ,  H01M50/566 ,  H01M50/55 ,  H01M50/553 ,  H01M50/15 ,  H01M50/154 ,  H01M50/188 ,  H01M50/30 ,  H01M50/529 ,  H01M50/538 ,  H01M50/533 ,  H01M50/54 ,  H01M10/0413 ,  H01M10/0585

摘要： A secondary battery (100) having weldability between a current collector plate (120, 130) and an electrode-uncoated portion (111a, 112a) by increasing an absorption rate of a laser beam irradiated onto the current collector plate (120, 130). The secondary battery (100) includes an electrode assembly (110) including a first electrode plate (111) having a first electrode-uncoated portion (111a) protruding to one side, a second electrode plate (112) having a second electrode-uncoated portion (112a) protruding to an opposite side, and a separator (113) between the first and second electrode plates (111, 112); a case (160) accommodating the electrode assembly (110) and having a bottom surface (161) and long and short side surfaces (162, 163) extending upward from the bottom surface (161); and a first current collector plate (120, 120') having a flat portion, parallel to a short side surface (163), that is laser-welded to the first electrode-uncoated portion (111a), and a protrusion portion protruding from the flat portion toward the short side surface (163). A surface treatment part is on the flat portion.

公开(公告)号：EP4372863A3

公开(公告)日：2024-08-21

申请号：EP23194624.5

申请日：2023-08-31

申请人： Samsung SDI Co., Ltd.

发明人： Yeo, Ha Ram ,  Hwang, In Hyun ,  Kim, Bum Rae

IPC分类号： H01M10/0585 ,  H01M10/0525 ,  H01M10/04 ,  H01M50/103 ,  H01M50/15 ,  H01M50/538 ,  H01M50/176 ,  H01M50/54 ,  H01M50/566 ,  H01M50/553 ,  H01M50/188 ,  H01M50/55 ,  H01M50/30 ,  H01M50/529 ,  H01M50/533 ,  H01M50/536 ,  H01M50/148

CPC分类号： H01M10/0413 ,  H01M10/0585 ,  H01M50/103 ,  H01M50/15 ,  H01M50/154 ,  H01M50/176 ,  H01M50/188 ,  H01M50/30 ,  H01M50/529 ,  H01M50/533 ,  H01M50/536 ,  H01M50/538 ,  H01M50/54 ,  H01M50/553 ,  H01M50/566 ,  Y02E60/10 ,  Y02P70/50 ,  H01M10/0525

摘要： A secondary battery (100) having weldability between a current collector plate (120, 130) and an electrode-uncoated portion (111a, 112a) by increasing an absorption rate of a laser beam irradiated onto the current collector plate (120, 130). The secondary battery (100) includes an electrode assembly (110) including a first electrode plate (111) having a first electrode-uncoated portion (111a) protruding to one side, a second electrode plate (112) having a second electrode-uncoated portion (112a) protruding to an opposite side, and a separator (113) between the first and second electrode plates (111, 112); a case (160) accommodating the electrode assembly (110) and having a bottom surface (161) and long and short side surfaces (162, 163) extending upward from the bottom surface (161); and a first current collector plate (120, 120') having a flat portion, parallel to a short side surface (163), that is laser-welded to the first electrode-uncoated portion (111a), and a protrusion portion protruding from the flat portion toward the short side surface (163). A surface treatment part is on the flat portion.

公开(公告)号：EP4375004A1

公开(公告)日：2024-05-29

申请号：EP23207468.2

申请日：2023-11-02

申请人： Samsung SDI Co., Ltd.

发明人： Yeo, Ha Ram ,  Hwang, In Hyun ,  Kim, Bum Rae

IPC分类号： B23K26/244 ,  B23K101/38 ,  B23K26/00

CPC分类号： B23K2101/3820180801 ,  B23K26/244 ,  H01M50/528 ,  H01M50/538 ,  H01M50/536 ,  H01M50/54 ,  B23K26/0093

摘要： A secondary battery includes: an electrode assembly, a case accommodating the electrode assembly; and a cap assembly sealing the case and including a pair of current collector plates. The electrode assembly includes a first electrode plate having a first substrate tab extending in one direction, a second electrode plate having a second substrate tab extending in another direction, and a separator interposed between the first electrode plate and the second electrode plate. Each of the current collector plates is electrically connected to one of the first substrate tab and the second substrate tab. The current collector plates are laser-welded to the first substrate tab and the second substrate tab, respectively, and a laser welding direction is parallel to a metal processing direction of the corresponding current collector plate.