公开(公告)号：US20250140785A1

公开(公告)日：2025-05-01

申请号：US18670509

申请日：2024-05-21

Applicant: SAMSUNG SDI CO., LTD.

Inventor： Hyejin KWON ,  Donghyun SHIN ,  Jaehong KIM ,  Jungwook CHA ,  Youngyeol CHO ,  Seongho JEON

IPC: H01M4/133 ,  H01M4/02 ,  H01M4/134 ,  H01M4/36 ,  H01M4/38 ,  H01M4/587 ,  H01M10/0525

Abstract: Disclosed are a negative electrode for a rechargeable lithium battery and a rechargeable lithium battery including the same. The negative electrode includes a current collector, a first negative active material layer on a first side of the current collector; and a second negative active material layer on a second side of the current collector, wherein a loading level (A) of the first negative active material layer is larger than a loading level (B) of the second negative active material layer, the first negative active material layer includes a 1a layer contacting the current collector and a 1b layer on one side of the 1a layer, the 1a layer includes a 1a negative active material, the 1b layer includes a 1b negative active material, the 1a negative active material includes natural graphite, or a mixture of natural graphite and artificial graphite, the 1b negative active material includes artificial graphite, and the second negative active material layer is a single layer.

公开(公告)号：US20240413309A1

公开(公告)日：2024-12-12

申请号：US18497626

申请日：2023-10-30

Applicant: SAMSUNG SDI CO., LTD.

Inventor： Donghyun SHIN ,  Jungwook CHA ,  Hyejin KWON ,  Youngyeol CHO ,  Jaehong KIM

IPC: H01M4/36 ,  B82Y30/00 ,  H01M4/38 ,  H01M4/583 ,  H01M4/62 ,  H01M10/052

Abstract: Disclosed are a negative electrode for a rechargeable lithium battery and a rechargeable lithium battery including the same. The negative electrode includes a current collector; a first layer on the current collector, the first layer consisting of a Si-based material, a linear conductive material, a spherical conductive material, and a first binder; and a second layer on the first layer, the second layer consisting of crystalline carbon and a second binder.

公开(公告)号：US20210091346A1

公开(公告)日：2021-03-25

申请号：US16642284

申请日：2018-09-20

Applicant: Samsung SDI Co., Ltd.

Inventor： Sunil PARK ,  Donghyun SHIN ,  Jungyup YANG ,  Jeongdoo YI

IPC: H01M2/02 ,  B32B27/08

Abstract: Disclosed are an outer case for a secondary battery, and a secondary battery including the same, the outer case comprising: a first polymer resin layer; a second polymer resin layer positioned on a first surface of the first polymer resin layer, and having a first adhesive layer interposed therebetween so as to be attached thereto; and an inner resin layer positioned on a second surface of the first polymer resin layer, and having a second adhesive layer interposed therebetween so as to be attached thereto, wherein the first polymer resin layer and the second polymer resin layer respectively comprise a fluorine-containing resin.

公开(公告)号：US20250140891A1

公开(公告)日：2025-05-01

申请号：US18633612

申请日：2024-04-12

Applicant: SAMSUNG SDI CO., LTD.

Inventor： Donghyun SHIN

IPC: H01M10/04 ,  H01M50/103 ,  H01M50/15

Abstract: A rechargeable battery includes an electrode assembly including a first wound part and a second wound part connected by a connection part, the electrode assembly being formed by being wound at each of both ends of a stacked body of a first electrode plate, a first separator, a second electrode plate, and a second separator; and a case that accommodates the electrode assembly, wherein the case includes flat sides facing each other at both sides of the case in a width direction, and curved sides at both ends of the case in a length direction, and the flat sides and the first wound part and the second wound part surround an electrolyte solution accommodating space therebetween.

公开(公告)号：US20200303700A1

公开(公告)日：2020-09-24

申请号：US16649925

申请日：2018-09-20

Applicant: Samsung SDI Co., Ltd.

Inventor： Yong-Kyun PARK ,  Hyunhee KIM ,  Juhee SOHN ,  Donghyun SHIN ,  Seunghun LEE ,  Jungmin LEE

IPC: H01M2/12

Abstract: A rechargeable battery is introduced, and an exemplary embodiment of the present invention provides a rechargeable battery including: an electrode assembly configured to charge and discharge a current; a case accommodating the electrode assembly therein; a cap plate configured to seal an opening of the case; an electrode terminal electrically connected to the electrode assembly and externally drawn out through the cap plate; a first valve assembly installed in an electrolyte injection opening of the cap plate to open and close the electrolyte injection opening; a gas removal opening formed in the cap plate to remove a gas; and a second valve assembly installed in the gas removal opening to open and close the gas removal opening.