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：US20230335836A1

公开(公告)日：2023-10-19

申请号：US18135578

申请日：2023-04-17

申请人： Samsung SDI Co., Ltd.

发明人： Dae Kyu KIM ,  Jong Jun PARK

IPC分类号： H01M50/14 ,  H01M50/103 ,  H01M50/15

CPC分类号： H01M50/14 ,  H01M50/103 ,  H01M50/15 ,  H01M10/0525

摘要： A secondary battery includes: an electrode assembly; a case accommodating the electrode assembly; and a cap assembly coupled to an upper portion of the case. The cap assembly includes: a cap-up having a stress absorbing portion at an outer surface thereof and extending toward an inside of the case; a safety vent below the cap-up and having a notch; and a cap-down coupled to a lower portion of the safety vent.

公开(公告)号：US20220359962A1

公开(公告)日：2022-11-10

申请号：US17733046

申请日：2022-04-29

申请人： Samsung SDI Co., Ltd.

发明人： Jong Jun PARK ,  Dae Kyu KIM

IPC分类号： H01M50/578 ,  H01M50/30 ,  H01M10/0587 ,  H01M50/107

摘要： A secondary battery includes: a cylindrical case; an electrode assembly accommodated in the cylindrical case and wound in a cylindrical shape; and a current interrupt device electrically connected to the electrode assembly and sealing the cylindrical case. The current interrupt device includes a cap-down electrically connected to the electrode assembly, a safety vent electrically connected to the cap-down, and an insulating gasket between the cap-down and the safety vent and covering outer circumferences of the cap-down and the safety vent.

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：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：US20230411749A1

公开(公告)日：2023-12-21

申请号：US18250952

申请日：2021-10-13

申请人： Samsung SDI Co., Ltd.

发明人： Dae Kyu KIM ,  Jong Jun PARK

IPC分类号： H01M50/186 ,  H01M50/152 ,  H01M50/342 ,  H01M50/193

CPC分类号： H01M50/186 ,  H01M50/152 ,  H01M50/3425 ,  H01M50/193

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. The cap assembly comprises: a cap-up; a cap-down disposed under the cap-up; a vent plate disposed between the cap-up and the cap-down, spaced apart from the cap-down and having at least one notch; and an insulator inserted between the vent plate and the cap-down to insulate the vent plate and the cap-down from each other, wherein the insulator is formed through an injection process, an assembly process, and a cross-linking process, sequentially.
According to an embodiment of the present invention, when the insulator is provided in the cap assembly, since the cross-linking process is performed after fusion, the insulator can be stably coupled to the cap assembly. In addition, since, due to the cross-linking process, the insulator does not melt even in a high-temperature environment, the insulator can maintain the insulating function thereof even in a high-temperature environment.

公开(公告)号：US20230253669A1

公开(公告)日：2023-08-10

申请号：US18003476

申请日：2022-02-09

申请人： Samsung SDI Co., Ltd.

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

IPC分类号： H01M50/342 ,  H01M50/152

CPC分类号： H01M50/3425 ,  H01M50/152 ,  H01M2200/20

摘要： The present disclosure provides a secondary battery capable of increasing an operation time till a breakdown of a safety vent at a high temperature environment. As an example, disclosed is a secondary battery comprising: a can having a space therein; an electrode assembly accommodated in the space of the can; and a cap assembly for sealing the electrode assembly by blocking the can, wherein the cap assembly comprises a cap-up, a cap-down under the cap-up, and a safety vent between the cap-up and the cap-down, wherein the safety vent comprises a support protrusion formed on a contact surface coupled to the cap-up.

公开(公告)号：US20230223643A1

公开(公告)日：2023-07-13

申请号：US18151400

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： H01M50/342 ,  H01M50/107 ,  H01M50/152

CPC分类号： H01M50/3425 ,  H01M50/107 ,  H01M50/152 ,  H01M2200/20

摘要： A secondary battery includes: a cylindrical case; an electrode assembly in the cylindrical case; and a cap assembly configured to seal the cylindrical case and including a cap-down electrically connected to the electrode assembly, a cap-up coupled to an upper portion of the cap-down, and a vent plate between the cap-down and the cap-up, wherein the vent plate includes: a first plate; and a second plate coupled to the outside of the first plate, wherein the first plate has rigidity less than that of the second plate.

公开(公告)号：US20230040851A1

公开(公告)日：2023-02-09

申请号：US17817259

申请日：2022-08-03

申请人： Samsung SDI Co., Ltd.

发明人： Dae Kyu KIM ,  Chang Wook KIM ,  Sang Hyun KIM ,  Jong Jun PARK ,  Kwang Soo SEO ,  Jeong Chull AHN ,  Jae Woong WI ,  Tae Yoon LEE

IPC分类号： H01M10/0587

摘要： A secondary battery, includes an electrode assembly including a first electrode plate, a second electrode plate, and a separator wherein the electrode assembly is wound; a can for accommodating the electrode assembly and an electrolyte; a finishing tape including a film layer comprising a nylon material and an adhesive layer for attaching the film layer to the electrode assembly, wherein the finishing tape at least partially surrounds the electrode assembly; and a cap assembly that seals the can.