公开(公告)号：US11862790B1

公开(公告)日：2024-01-02

申请号：US18335604

申请日：2023-06-15

Applicant: SK ON CO., LTD.

Inventor： Ji Hyung Kim ,  Young Ha Kim ,  Sang Bin Lee ,  Ho Jin Hwang

IPC: H01M4/525 ,  H01M4/36 ,  H01M10/0525 ,  H01M4/02

CPC classification number: H01M4/366 ,  H01M4/525 ,  H01M10/0525 ,  H01M2004/021

Abstract: A lithium secondary battery includes a cathode including a cathode current collector and a cathode active material layer formed on the cathode current collector, and an anode including an anode current collector and an anode active material layer formed on the anode current collector. The anode active material layer has an area larger than that of the cathode active material layer. The cathode active material layer includes a central portion and an outer portion surrounding the central portion, and the outer portion has a specific capacity less than that of the central portion.

公开(公告)号：US12051802B2

公开(公告)日：2024-07-30

申请号：US18513638

申请日：2023-11-20

Applicant: SK ON CO., LTD.

Inventor： Ji Hyung Kim ,  Young Ha Kim ,  Sang Bin Lee ,  Ho Jin Hwang

IPC: H01M4/525 ,  H01M4/36 ,  H01M10/0525 ,  H01M4/02

CPC classification number: H01M4/366 ,  H01M4/525 ,  H01M10/0525 ,  H01M2004/021

Abstract: A lithium secondary battery includes a cathode including a cathode current collector and a cathode active material layer formed on the cathode current collector, and an anode including an anode current collector and an anode active material layer formed on the anode current collector. The anode active material layer has an area larger than that of the cathode active material layer. The cathode active material layer includes a central portion and an outer portion surrounding the central portion, and the outer portion has a specific capacity less than that of the central portion.

公开(公告)号：US12034166B2

公开(公告)日：2024-07-09

申请号：US18336622

申请日：2023-06-16

Applicant: SK ON CO., LTD.

Inventor： Ji Hyung Kim ,  Young Ha Kim ,  Sang Bin Lee ,  Ho Jin Hwang

IPC: H01M4/62 ,  H01M4/04 ,  H01M4/66 ,  H01M10/0525

CPC classification number: H01M4/621 ,  H01M4/04 ,  H01M4/661 ,  H01M10/0525

Abstract: A lithium secondary battery includes a cathode including a cathode current collector and a cathode active material layer formed on the cathode current collector, and an anode including an anode current collector and an anode active material layer formed on the anode current collector. The anode active material layer has an area larger than that of the cathode active material layer. The anode active material layer includes an overlapping portion overlying the cathode active material layer in a planar direction and a margin portion around the overlapping portion. The margin portion has an electrical resistance greater than that of the overlapping portion.

公开(公告)号：US20240234822A1

公开(公告)日：2024-07-11

申请号：US18140933

申请日：2023-04-28

Applicant: SK On Co., Ltd.

Inventor： Ho Jin Hwang ,  Young Ha Kim ,  Ji Hyung Kim ,  Sang Bin Lee

IPC: H01M10/0583 ,  H01M50/105 ,  H01M50/184 ,  H01M50/531

CPC classification number: H01M10/0583 ,  H01M50/105 ,  H01M50/184 ,  H01M50/531 ,  H01M10/0525

Abstract: A folding method for a battery pouch in accordance with an embodiment of the present disclosure includes the steps of folding corner areas of a pouch-type exterior member that includes a main side, a first subside on one side of the main side, and a second subside on the other side of the main side along a first folding line; folding a first portion of the pouch-type exterior member to the inside of the pouch-type exterior member along a second folding line; and folding a second portion of the pouch-type exterior member to the outside of the pouch-type exterior member along a third folding line.

公开(公告)号：US20240021926A1

公开(公告)日：2024-01-18

申请号：US18220926

申请日：2023-07-12

Applicant: SK ON CO., LTD.

Inventor： Ji Hyung Kim ,  Young Ha Kim ,  Sang Bin Lee ,  Ho Jin Hwang

IPC: H01M50/105 ,  H01M50/325

CPC classification number: H01M50/105 ,  H01M50/325

Abstract: A secondary battery includes an electrode assembly including a cathode and an anode, a pouch case including an accommodating portion in which the electrode assembly is placed and a peripheral portion extending along a circumference of the accommodating portion and sealing the electrode assembly, and an anti-venting tool coupled to at least one corner portion among corner portions of the peripheral portion to fix the corner portion. The corner portion is inserted through the anti-venting tool to protrude from the anti-venting tool.