公开(公告)号：US20240120580A1

公开(公告)日：2024-04-11

申请号：US18272929

申请日：2022-11-17

Applicant: LG Energy Solution, Ltd.

Inventor： Seung Ho Na ,  Kwang Hee Choi ,  Dong Kyun Ha ,  Yoon Beom Lee ,  Do Woo Kim ,  Hye Ji Lee

IPC: H01M50/105 ,  H01M10/04 ,  H01M50/119 ,  H01M50/121 ,  H01M50/129 ,  H01M50/133 ,  H01M50/178

CPC classification number: H01M50/105 ,  H01M10/0404 ,  H01M10/0481 ,  H01M50/119 ,  H01M50/121 ,  H01M50/129 ,  H01M50/133 ,  H01M50/178

Abstract: A sealing device for a pouch-type battery includes an upper sealing block and a lower sealing block. The upper sealing block has a two-stage upper sealing groove, including a first upper step and a second upper step, and the lower sealing block has a two-stage lower sealing groove, including a first lower step and a second lower step. The upper sealing block contacts a first surface of an electrode lead sealing part of the pouch-type battery, and the lower sealing block contacts a second surface of the electrode lead sealing part of the pouch-type battery in a process of performing sealing through heat fusion. A pouch-type battery having an electrode lead sealing part formed by the sealing device is also provided.

公开(公告)号：US20230369690A1

公开(公告)日：2023-11-16

申请号：US18029205

申请日：2021-11-17

Applicant: LG Energy Solution, Ltd.

Inventor： Shin Chul Kim ,  Seung Ho Na ,  Sung Chul Park

IPC: H01M50/178 ,  H01M50/105 ,  H01M10/04 ,  H01M50/186 ,  H01M50/536

CPC classification number: H01M50/178 ,  H01M50/105 ,  H01M10/049 ,  H01M50/186 ,  H01M50/536

Abstract: The present invention provides a secondary battery, in which an electrode assembly is embedded in a pouch, and a lead electrically connected to the electrode assembly has one side protruding to the outside of the pouch, the secondary battery comprising: the pouch in which the electrode assembly is embedded, and sealing is performed along an edge thereof; the lead having one end connected to the electrode assembly and the other end protruding to the outside of the pouch; and a lead film disposed between the lead and the pouch and adhering to each of the pouch and the lead when the sealing of the pouch is performed, wherein an expansion part expanded by a predetermined length along a longitudinal direction of the lead is formed on the pouch, and the lead film has an area so that the entire expansion part is accommodated therein.

公开(公告)号：US20230318119A1

公开(公告)日：2023-10-05

申请号：US18024540

申请日：2021-08-23

Applicant: LG Energy Solution, Ltd.

Inventor： Won Pill Hwang ,  Seung Ho Na ,  Sang Ho Bae ,  Kwan Bo Lee ,  Yoon Beom Lee ,  Shin Chul Kim ,  Su Taek Jung ,  Chang Min Han

IPC: H01M50/325 ,  H01M50/186 ,  H01M50/54 ,  H01M50/126 ,  H01M10/04 ,  H01M50/105

CPC classification number: H01M50/325 ,  H01M50/186 ,  H01M50/54 ,  H01M50/126 ,  H01M10/0481 ,  H01M10/049 ,  H01M50/105

Abstract: A secondary battery includes: an electrode assembly; an electrode lead; a battery case with an accommodation portion for the electrode assembly and a sealing portion sealing the accommodation portion; and a lead film. The sealing portion includes a connection-sealing region connected to the accommodation portion, a front end-sealing region, and a reinforcement-sealing region therebetween. The reinforcement-sealing region includes a compressed surface, provided in the sealing portion between the connection-sealing region and the front end-sealing region and recessed into the sealing portion, and raised surfaces, provided in the sealing portion between the connection-sealing region and the compressed surface and between the front end-sealing region and the compressed surface and each of which is formed thicker than the compressed surface. The battery case has a resin layer, a metal layer, and an insulating layer. The resin layer of the raised surface is formed thicker than the resin layer of the compressed surface.

公开(公告)号：US20240145830A1

公开(公告)日：2024-05-02

申请号：US18279360

申请日：2023-01-11

Applicant: LG Energy Solution, Ltd.

Inventor： Seung Ho Na ,  Kwang Hee Choi ,  Song Hwa Han ,  Yoon Beom Lee ,  Jun Ho Yoon ,  Yeong Jae Lee

IPC: H01M50/186 ,  H01M50/105 ,  H01M50/119 ,  H01M50/121 ,  H01M50/129

CPC classification number: H01M50/186 ,  H01M50/105 ,  H01M50/119 ,  H01M50/121 ,  H01M50/129

Abstract: Disclosed herein is a pouch-type secondary battery and a manufacturing method thereof including. The pouch-type secondary battery includes an electrode assembly; an electrode lead extending from an electrode tab of the electrode assembly; an upper pouch; and a lower pouch. The upper pouch and the lower pouch include a sealed area where the edges are sealed and an unsealed area. An average thickness of the sealed area of the upper pouch and an average thickness of the sealed area of the lower pouch are equal to each other, and the average thickness of the unsealed area of the upper pouch is smaller than the average thickness of the unsealed area of the lower pouch, so that even if the thickness of the lower pouch is reduced during the sealing process of heat-sealing, the sealed area of the upper and lower pouches are formed with little difference in thickness.

公开(公告)号：US20220407152A1

公开(公告)日：2022-12-22

申请号：US17776431

申请日：2020-12-03

Applicant: LG Energy Solution, Ltd.

Inventor： Seong Yoon Lim ,  Han Kil Kim ,  Hey Woong Park ,  Jeong Wan Yoo ,  Woo Sup Kim ,  Jae Hong Shim ,  Seung Ho Na ,  Sung Won Lee

IPC: H01M50/105 ,  H01M50/186 ,  H01M50/178 ,  H01M50/46 ,  H01M50/56 ,  H01M10/04

Abstract: Disclosed are a pouch type secondary battery, a battery pack, and a method for manufacturing the pouch type secondary battery. According to one aspect of the present invention, in an exterior accommodating an electrode assembly, a sealing part is formed along a circumference of the electrode assembly. The sealing part includes a first sealing part formed to cover an electrode lead, and one end of the first sealing part is formed below an upper end of a circumference of a cup formed in the pouch.