公开(公告)号：US20240145853A1

公开(公告)日：2024-05-02

申请号：US18376472

申请日：2023-10-04

申请人： SAMSUNG SDI CO., LTD.

发明人： Dae Kyu KIM

IPC分类号： H01M50/367 ,  H01M50/152

CPC分类号： H01M50/367 ,  H01M50/152

摘要： The present disclosure provides a secondary battery capable of preventing corrosion of a cap up or a safety vent due to a remaining cleaning liquid. Disclosed in an example is a secondary battery including: an electrode assembly; a case accommodating the electrode assembly; and a cap assembly coupled to an upper portion of the case, including a cap up, a safety vent installed below the cap up, and a cap down installed below the safety vent and electrically connected to the electrode assembly, wherein the safety vent includes a discharge passage formed on a surface in contact with the cap up.

公开(公告)号：US20230395932A1

公开(公告)日：2023-12-07

申请号：US18249939

申请日：2021-11-11

申请人： Samsung SDI Co., Ltd.

发明人： Dae Kyu KIM

IPC分类号： H01M50/342 ,  H01M50/152 ,  H01M50/159

CPC分类号： H01M50/3425 ,  H01M50/159 ,  H01M50/152

摘要： In order to solve a technical problem according to the present disclosure, provided is a cylindrical secondary battery capable of preventing the deformation of components during the manufacture or use thereof. To this end, the present disclosure provides a cylindrical secondary battery comprising: a cylindrical can; an electrode assembly accommodated in the cylindrical can; and a cap assembly for sealing the electrode assembly by covering the cylindrical can, wherein the cap assembly includes: a cap-up portion; a cap-down portion provided below the cap-up portion; and a safety vent provided between the cap-up portion and the cap-down portion, and the elongation rates of the cap-down portion and the safety vent are different from each other.

公开(公告)号：US20230223622A1

公开(公告)日：2023-07-13

申请号：US18151172

申请日：2023-01-06

申请人： Samsung SDI Co., Ltd

发明人： Shin Jung KIM ,  Dae Kyu KIM ,  Jong Jun PARK

IPC分类号： H01M50/152 ,  H01M50/107 ,  H01M50/593 ,  H01M50/54 ,  H01M50/30

CPC分类号： H01M50/152 ,  H01M50/107 ,  H01M50/593 ,  H01M50/54 ,  H01M50/30

摘要： A secondary battery includes: a cylindrical case; an electrode assembly in the cylindrical case; and a cap plate electrically connected to the electrode assembly and sealing the cylindrical case. The cap plate has a first flat portion at a center of the cap plate, a second flat portion outside the first flat portion, and a vent portion between the first flat portion and the second flat portion, and the vent portion has a thickness smaller than a thickness of the first flat portion or a thickness of the second flat portion.

公开(公告)号：US20230024517A1

公开(公告)日：2023-01-26

申请号：US17757290

申请日：2021-01-06

申请人： SAMSUNG SDI CO., LTD.

发明人： Dae Kyu KIM

IPC分类号： H01M50/153 ,  H01M10/04 ,  H01M50/109 ,  H01M50/183 ,  H01M50/533

摘要： A rechargeable battery according to one embodiment of the present invention includes: an electrode assembly having a separator interposed between a first electrode and a second electrode; a case including an upper case having an open lower portion and a penetration hole in the upper portion thereof, and a lower case having an open upper portion to seal the lower portion of the upper case, and accommodating the electrode assembly therein; and a cap plate coupled to the upper case so as to seal the penetration hole and electrically insulated from the upper case, wherein the upper case and the lower case are coupled such that partial regions overlap, and an upper end of the lower case protrudes inwardly and is latched and fixed to the outside of the upper case.

公开(公告)号：US20240291124A1

公开(公告)日：2024-08-29

申请号：US18487882

申请日：2023-10-16

申请人： SAMSUNG SDI CO., LTD.

发明人： Dae Kyu KIM

IPC分类号： H01M50/593 ,  H01M50/107 ,  H01M50/152 ,  H01M50/325 ,  H01M50/531 ,  H01M50/586 ,  H01M50/627

CPC分类号： H01M50/593 ,  H01M50/107 ,  H01M50/152 ,  H01M50/325 ,  H01M50/531 ,  H01M50/586 ,  H01M50/627 ,  H01M2200/20

摘要： The secondary battery comprises an electrode assembly including a lead tab, a case accommodating the electrode assembly and an electrolyte solution, a cap assembly electrically connected to the lead tab, and coupled to the case to seal the case, and an insulating plate between the electrode assembly and the cap assembly in the case, defining a tab opening for drawing out the lead tab, and including thin film portions respectively defining cutouts for passage of electrolyte solution or gas.

公开(公告)号：US20240178509A1

公开(公告)日：2024-05-30

申请号：US18243239

申请日：2023-09-07

申请人： SAMSUNG SDI CO., LTD.

发明人： Jong Jun PARK ,  Dae Kyu KIM ,  Kwang Soo SEO

IPC分类号： H01M50/342 ,  H01M50/148

CPC分类号： H01M50/3425 ,  H01M50/148

摘要： A secondary battery includes an electrode assembly; a case that accommodates the electrode assembly; and a cap assembly that is coupled to an upper portion of the case, the cap assembly including a cap up, a safety vent below the cap up, and a cap down below the safety vent and electrically connected to the electrode assembly, wherein the safety vent includes a main notch and a sub-notch adjacent to the main notch, and the sub-notch has a depth that is smaller than a depth of the main notch.

公开(公告)号：US20230361392A1

公开(公告)日：2023-11-09

申请号：US18245875

申请日：2021-06-29

申请人： Samsung SDI Co., Ltd.

发明人： Dae Kyu KIM

IPC分类号： H01M50/107 ,  H01M50/152 ,  H01M50/308

CPC分类号： H01M50/107 ,  H01M50/152 ,  H01M50/308

摘要： A technical problem to be solved according to an embodiment of the present invention is to provide a cylindrical secondary battery which can prevent components thereof from being deformed during manufacturing processes or in use. To this end, an embodiment of the present invention provides a cylindrical secondary battery comprising: a cylindrical can; an electrode assembly received in the cylindrical can; and a cap assembly covering the cylindrical can to seal the electrode assembly, wherein the cap assembly comprises a cap-up, a cap-down below the cap-up, and a safety vent between the cap-up and the cap-down, and the contact ratio between the safety vent and the cap-down ranges from 60% to 100%.

公开(公告)号：US20230140593A1

公开(公告)日：2023-05-04

申请号：US17911985

申请日：2021-02-26

申请人： Samsung SDI Co., Ltd.

发明人： Dae Kyu KIM ,  Jin Young MOON ,  Bo Ram LEE

IPC分类号： H01M10/04 ,  H01M50/169

摘要： An embodiment of the present invention relates to a cylindrical secondary battery comprising: a cylindrical can; an electrode assembly accommodated in the cylindrical can; and a cap assembly comprising a cap-up, a cap-down arranged under the cap-up, a vent plate which is arranged between the cap-up and the cap-down, is separated from the cap-down, and has at least one notch formed thereon, and an insulating member inserted between the vent plate and the cap-down so as to insulate the vent plate and the cap-down from each other, wherein the cap assembly may further comprise a support member inserted between the vent plate and the cap-down, separated from the insulating member, and arranged on the inner side of the insulating member. According to the present invention; a deformation portion of a safety vent is supported to prevent deformation of the safety vent if stress occurs, and thus vent fracture can be stabilized.

公开(公告)号：US20230006303A1

公开(公告)日：2023-01-05

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

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：US20220255183A1

公开(公告)日：2022-08-11

申请号：US17597469

申请日：2020-06-29

申请人： Samsung SDI Co., Ltd.

发明人： Sung Gwi KO ,  Dae Kyu KIM

IPC分类号： H01M50/342 ,  H01M10/0525 ,  H01M50/392 ,  H01M50/152

摘要： The present invention relates to a secondary battery enabling the enhancement of safety by rapidly releasing gas generated therein. One embodiment discloses a secondary battery comprising: an electrode assembly; a case for receiving the electrode assembly; and a cap assembly coupled to the upper portion of the case and provided with a cap-up, a safety vent installed on the lower portion of the cap-up and having a notch formed therein, and a cap-down coupled to the lower portion of the safety vent, wherein the cap-down comprises a welded part welded to the safety vent from the lower portion of the cap-down.