公开(公告)号：US11660704B2

公开(公告)日：2023-05-30

申请号：US16769324

申请日：2018-10-05

申请人： Samsung SDI Co., Ltd.

发明人： Sung Gwi Ko ,  Dae Kyu Kim ,  Jin Young Moon

IPC分类号： H01M10/0525 ,  B23K26/323 ,  B23K26/21 ,  B23K26/08 ,  H01M50/171 ,  H01M50/30 ,  H01M50/169 ,  H01M50/167 ,  H01M50/574 ,  B23K103/18 ,  B23K101/36 ,  H01M50/593

CPC分类号： B23K26/323 ,  B23K26/08 ,  B23K26/21 ,  H01M10/0525 ,  H01M50/167 ,  H01M50/169 ,  H01M50/171 ,  H01M50/30 ,  H01M50/574 ,  B23K2101/36 ,  B23K2103/18 ,  H01M50/593

摘要： The present invention relates to a secondary battery capable of improving the coupling force between a safety vent and a cap-up. For example, disclosed is a secondary battery comprising: an electrode assembly; a case for accommodating the electrode assembly; a cap assembly coupled to the upper part of the case; and a gasket interposed between the cap assembly and the case, wherein the cap assembly includes a cap-up and a safety vent, which is provided at the lower part of the cap-up and has a vent extension part extending to the upper part of the cap-up so as to encompass the edge of the cap-up, a welding region, in which the safety vent and the cap-up are welded and coupled by laser welding, is formed in the vent extension part, and the welding region is formed in a line shape.

公开(公告)号：US12021255B2

公开(公告)日：2024-06-25

申请号：US17846912

申请日：2022-06-22

申请人： Samsung SDI Co., Ltd.

发明人： Dae Kyu Kim ,  Shin Jung Kim ,  Jong Jun Park ,  Sung Gwi Ko

IPC分类号： H01M50/333 ,  H01M50/186 ,  H01M50/317

CPC分类号： H01M50/333 ,  H01M50/186 ,  H01M50/317

摘要： A secondary battery includes: an electrode assembly; a case including an opening and accommodating the electrode assembly; a cap assembly sealing the opening of the case and having a valve hole formed therein; and a valve vertically movably installed in the valve hole and selectively openable and closeable, to allow an internal gas to be discharged.

公开(公告)号：US11831043B2

公开(公告)日：2023-11-28

申请号：US16771642

申请日：2017-12-13

申请人： Samsung SDI Co., Ltd.

发明人： Dae Kyu Kim ,  Sung Gwi Ko ,  Shin Jung Kim ,  Byoung Min Chun

IPC分类号： H01M10/04 ,  H01M50/107 ,  H01M50/147 ,  H01M50/152 ,  H01M50/179 ,  H01M50/578 ,  H01M50/342 ,  H01M10/0525 ,  H01M50/574 ,  H01M50/588 ,  H01M50/593 ,  H01M50/59

CPC分类号： H01M50/578 ,  H01M10/0422 ,  H01M10/0525 ,  H01M50/107 ,  H01M50/147 ,  H01M50/152 ,  H01M50/179 ,  H01M50/3425 ,  H01M50/574 ,  H01M50/588 ,  H01M50/59 ,  H01M50/593

摘要： The present invention relates to a cylindrical lithium ion secondary battery which, when an upper end of a cylindrical can is clamped, can prevent deformation of a cap assembly so as to improve safety. For an example, a cylindrical lithium ion secondary battery is disclosed, the battery comprising: a cylindrical can; an electrode assembly received in the cylindrical can; and a cap assembly for sealing the cylindrical can, wherein: the cap assembly comprises a top plate having a notch formed thereon, a support plate disposed in close contact with a lower surface of the top plate and including a first through-hole formed through the center thereof, and a bottom plate electrically connected with the electrode assembly and connected to the lower surface of the top plate through the first through-hole; and the support plate has a strength greater than a strength of the top plate.

公开(公告)号：US11527800B2

公开(公告)日：2022-12-13

申请号：US16771888

申请日：2017-12-13

申请人： Samsung SDI Co., Ltd.

发明人： Sung Gwi Ko ,  Dae Kyu Kim

IPC分类号： H01M50/325 ,  H01M50/572 ,  H01M50/172 ,  H01M50/166

摘要： The present invention relates to a secondary battery which is capable of improving safety. As an example, a secondary battery which comprises an electrode assembly; a case which accommodates the electrode assembly; a cap assembly which is coupled to an upper portion of the case, and a gasket which is interposed between the cap assembly and the case, wherein the cap assembly comprises a cap-up, a safety vent which is installed at a lower portion of the cap-up, a cap-down which is installed at a lower portion of the safety vent, an insulator which is interposed between the safety vent and the cap-down, and a sub-plate which is located on a lower surface of the cap-down, and an insulation layer is formed on one surface of the safety vent, is disclosed.

公开(公告)号：US11367923B2

公开(公告)日：2022-06-21

申请号：US16771639

申请日：2017-12-14

申请人： Samsung SDI Co., Ltd.

发明人： Dae Kyu Kim ,  Sung Gwi Ko ,  Shin Jung Kim ,  Byoung Min Chun

IPC分类号： H01M50/30 ,  H01M50/107 ,  H01M50/166 ,  H01M50/54 ,  H01M50/171 ,  H01M50/572

摘要： The present invention provides a cylindrical secondary battery which can have increased safety and capacity, and enhanced scratch resistance and pressure resistance on an external contact surface. To this end, a cylindrical secondary battery is disclosed, the battery comprising: a cylindrical case; an electrode assembly received in the case; and a cap assembly for sealing the case, wherein the cap assembly comprises a top plate having a notch formed on at least one surface thereof, a middle plate coupled to the top plate and including a first through-hole formed through the center thereof, and a bottom plate electrically connected with the electrode assembly and coupled to the top plate through the first through-hole of the middle plate, and includes a surface-treated region formed by surface-treating a surface of the top plate so as to have a concave-convex structure.