公开(公告)号：US10790483B2

公开(公告)日：2020-09-29

申请号：US15881089

申请日：2018-01-26

Applicant: Contemporary Amperex Technology Co., Limited

Inventor： Chengyou Xing ,  Quankun Li ,  Peng Wang ,  Zhijun Guo

IPC: H01M2/04 ,  H01M2/08 ,  H01M2/30 ,  H01M2/06 ,  H01M10/05

Abstract: A top cap structure for a power battery is provided. The power battery top cap structure includes a first and second electrode assemblies, and a top cap piece. The first electrode assembly includes a first electrode column having an upper and lower sections, a first seal member and a first connection block. The upper section and the first connection block are formed from a first base metal. The lower section is formed from a second base metal different from the first base metal. The upper section includes a step portion, and the lower section is joined with a bottom surface of the upper section below the top cap piece. The first seal member includes a horizontal extending portion. The horizontal extending portion is disposed between a lower surface of the top cap piece and the step portion. The top portion of the upper section connects with the first connection block.

公开(公告)号：US10784475B2

公开(公告)日：2020-09-22

申请号：US15873527

申请日：2018-01-17

Applicant: Contemporary Amperex Technology Co., Limited

Inventor： Yulian Zheng ,  Chengyou Xing ,  Quankun Li ,  Peng Wang ,  Lulu Bai

IPC: H01M2/04 ,  H01M2/30 ,  H01M2/06 ,  H01M2/08 ,  H01M2/02 ,  H01M2/12

Abstract: The present disclosure provides a cap assembly for a secondary battery and a secondary battery. The cap assembly includes a cap plate, a fixing member, a connecting member and an electrode terminal, wherein the cap plate has an electrode lead-out hole; the fixing member is fixed to the cap plate through the connecting member and provided with a weakened portion that is close to a center line of the cap plate in a width direction of the cap plate; and the electrode terminal includes a terminal board, wherein the terminal board has an outer peripheral surface at least partially surrounded by the fixing member so that the electrode terminal is fixed to the fixing member, and the terminal board is provided on a side of the cap plate and covers the electrode lead-out hole.

公开(公告)号：US10763466B2

公开(公告)日：2020-09-01

申请号：US16033201

申请日：2018-07-12

Applicant: Contemporary Amperex Technology Co., Limited

Inventor： Baisong Chen ,  Quankun Li ,  Peng Wang ,  Chengyou Xing ,  Yulian Zheng

IPC: H01M2/30 ,  H01M2/06 ,  H01M2/04

Abstract: A top cap assembly of a secondary battery and second battery is provided. The top cap assembly may comprise: a top cap plate comprising an electrode extraction hole; an electrode terminal comprising a terminal plate, the terminal plate may be located on a side of the top cap plate and cover the electrode extraction hole; a first fixing component, the first fixing component may at least partially surround the terminal plate to fix the electrode terminal to the first fixing component; and a second fixing component comprising a main body and a first connection portion connected to the main body and extends away from the terminal plate, the main body may be fixedly connected to the first fixing component, and the first connection portion may be fixedly connected to the top cap plate.

公开(公告)号：US10665826B2

公开(公告)日：2020-05-26

申请号：US15871463

申请日：2018-01-15

Applicant: Contemporary Amperex Technology Co., Limited

Inventor： Xiang Li ,  Rulai Cai ,  Xianfeng Yu ,  Peng Wang ,  Quankun Li

IPC: H01M2/04 ,  H01M2/34 ,  H01M10/02 ,  H01M2/30 ,  H01M2/12

Abstract: Provided are a top cover assembly and a secondary battery containing the same. The top cover assembly includes a cover plate, and a first terminal assembly; the top cover plate includes a main body and a protrusion connected to the main body, the protrusion protrudes beyond an upper surface of the main body, an accommodation chamber is defined below the protrusion, the protrusion faces the accommodation chamber, the first terminal assembly includes a deformable plate, and the deformable plate is connected to the top cover plate and covers the accommodation chamber. Such solution can sufficiently utilize the space between the upper surface of the top cover plate and the upper surface of the second terminal assembly, improve the space utilization of the secondary battery, improve the deformation resistance of the top cover plate and the strength of the top cover plate, and keep the secondary battery safe.

公开(公告)号：US10516151B2

公开(公告)日：2019-12-24

申请号：US15435681

申请日：2017-02-17

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Quankun Li ,  Pinghua Deng ,  Peng Wang ,  Jian Guo ,  Lingbo Zhu ,  Yongshou Lin

IPC: H01M2/34 ,  H01M2/04 ,  H01M2/08 ,  H01M10/34 ,  H01M2/12

Abstract: The present application provides a top cover of power battery, including top cover plate, first electrode unit and second electrode unit, the first electrode unit includes insulation piece, conductive plate, deformable plate and sealing piece, the top cover plate is provided with deformable plate connecting hole and fixing hole, the deformable plate seals the deformable plate connecting hole, the insulation piece is provided with top cover plate connecting portion and conductive plate connecting portion, the insulation piece is fixed underneath the top cover plate through cooperation of top cover plate connecting portion and fixing hole, the conductive plate is insulated from and fixed with the top cover plate through the conductive plate connecting portion, the conductive plate is electrically connected with the deformable plate, the sealing piece seals path from the fixing hole to interior of the power battery passing through gap between insulation piece and top cover plate.

公开(公告)号：US10418619B2

公开(公告)日：2019-09-17

申请号：US15485775

申请日：2017-04-12

Applicant: Contemporary Amperex Technology Co., Limited

Inventor： Quankun Li ,  Jian Guo ,  Lingbo Zhu ,  Pinghua Deng ,  Peng Wang ,  Kai Wu

IPC: H01M2/34 ,  H01M2/04 ,  H01M2/26

Abstract: The present application provides a top cover of a power battery and the power battery. The top cover of the power battery includes a first electrode unit and a second electrode unit, the second electrode unit includes a deformable plate, an insulation piece and a conductive plate, the top cover plate is provided with a deformable plate connecting hole, the deformable plate seals the deformable plate connecting hole, the insulation piece is located underneath the top cover plate, the insulation piece is connected with the top cover plate, the conductive plate is insulated from and fixed with the top cover plate through the insulation piece and is electrically connected with the deformable plate. The power battery includes the above top cover of the power battery. The power battery provided by the present application can effectively prevent breaking, losing efficacy or deformation of the conductive plate during using process.

公开(公告)号：US20190067649A1

公开(公告)日：2019-02-28

申请号：US15894767

申请日：2018-02-12

Applicant: Contemporary Amperex Technology Co., Limited

Inventor： Quankun Li ,  Baisong Chen ,  Jian Guo ,  Peng Wang ,  Taosheng Zhu

IPC: H01M2/04 ,  H01M2/06 ,  H01M2/12 ,  H01M2/30 ,  H01M10/04

Abstract: The present disclosure provides a cap assembly for a secondary battery and a secondary battery. The cap assembly for the secondary battery includes a cap plate having an electrode lead-out hole; and a terminal assembly including a terminal board, a fixing member, a deformable sheet, a conductive sheet and an isolator, wherein the deformable sheet is attached to the terminal board; the conductive sheet includes a first portion provided between the terminal board and the cap plate; the terminal board is fixed to a side of the cap plate through the fixing member and covers the electrode lead-out hole, and the terminal board is electrically connected with the first portion through the deformable sheet; the deformable sheet is configured to deform to be electrically disconnected from the first portion in response to an increase in a pressure inside the secondary battery.

公开(公告)号：US10199627B2

公开(公告)日：2019-02-05

申请号：US15398457

申请日：2017-01-04

Applicant: Contemporary Amperex Technology Co., Limited

Inventor： Jian Guo ,  Quankun Li ,  Pinghua Deng ,  Lingbo Zhu ,  Qingkui Chi

IPC: H01M2/00 ,  H01M2/24 ,  H01M2/26 ,  H01M2/30 ,  H01M2/04 ,  H01M10/04

Abstract: The invention provides a secondary battery which comprises a cap plate and at least one cell. The secondary battery further comprises connecting pieces, each connecting piece is parallel to the cap plate and positioned at an inside of the cap plate in a thickness direction of the cap plate, a longitudinal direction of each connecting piece is parallel to a length direction of the cap plate, a transverse direction of each connecting piece is parallel to a width direction of the cap plate. Each connecting piece has: a tab welding portion for being welded to the corresponding tab of each cell; and an electrode terminal welding portion connected to the tab welding portion along the longitudinal direction of each connecting piece for being welded to the corresponding electrode terminal of the cap plate so as to electrically connect the corresponding electrode terminal and the corresponding tab of each cell.

公开(公告)号：US09929396B2

公开(公告)日：2018-03-27

申请号：US14842742

申请日：2015-09-01

Applicant: Contemporary Amperex Technology Co., Limited

Inventor： Quankun Li ,  Kai Wu ,  Pinghua Deng ,  Xiaobo Chen

IPC: H01M2/34 ,  H01M2/04 ,  H01M2/30

CPC classification number: H01M2/345 ,  H01M2/043 ,  H01M2/305 ,  H01M2200/20 ,  H01M2220/10 ,  H01M2220/20

Abstract: A power battery cap structure and a power battery are provided in the present invention. The power battery cap structure includes a first terminal, a second terminal and a cap assembly; both the first terminal and the second terminal are provided on the cap assembly, and the second terminal is electrically insulated from the cap assembly. The power battery cap structure further includes a resistance attached to the first terminal and electrically connected the first terminal with the cap assembly. The cap assembly includes a cap sheet, a first short circuit part and a second short circuit part; the first short circuit part and the second short circuit part are attached to the cap sheet and configured to act upwards when pressure inside the power battery increases so that the first terminal and the second terminal are electrically connected to form a protection loop; and the first short circuit part and the resistance are connected in parallel when the protection loop is formed. With the technical solution of the present invention, a separate protection loop can be formed in a power battery respectively in the cases of overcharge and nailing abuses, thereby efficiently protecting the power battery.

公开(公告)号：US20250112323A1

公开(公告)日：2025-04-03

申请号：US18976384

申请日：2024-12-11

Applicant: JIANGSU CONTEMPORARY AMPEREX TECHNOLOGY LIMITED ,  CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Haibo Ke ,  Quankun Li ,  Peng Wang ,  Shoujun Huang ,  Qi Cheng ,  Xiang Mei

IPC: H01M50/342 ,  B60L50/60 ,  B60R16/033 ,  H01M50/103

Abstract: This application discloses a housing, a battery cell, a battery, and an electric device, and pertains to the field of battery technologies. The housing has at least three edge portions intersecting at a same vertex. An indentation groove is provided on the housing, and the indentation groove intersects with at least two of the edge portions. Because the region near the edge portion of the housing has strong deformation resistance, the probability of abnormal cracking of the indentation groove due to creeping of the region in which the indentation groove is provided on the housing is reduced, thereby prolonging service life of the battery cell.