公开(公告)号：US10199615B2

公开(公告)日：2019-02-05

申请号：US15179921

申请日：2016-06-10

Applicant: Contemporary Amperex Technology Co., Limited

Inventor： Quankun Li ,  Pinghua Deng ,  Peng Wang ,  Kai Wu ,  Junjie Jiang

IPC: H01M2/00 ,  H01M2/04 ,  H01M2/34 ,  H01M2/06

Abstract: The top cover structure of the power battery includes a cap plate, a cathode column, a conducting piece and a reversing piece, the conducting piece is electrically connected with the cathode column, the cathode column is insulatedly assembled with the cap plate; the reversing piece includes a welding part, a embossment with a solid core structure and a joint part arranged between the welding part and the embossment, the embossment is arranged at the center of the joint part, the welding part is arranged on the outer margin of the joint part; the welding part is electrically connected with the cap plate, the embossment does not contact the conducting piece, when the pressure inside the power battery increases, the reversing piece receives the pressure inside the power battery, and moves upwards, so that the embossment is electrically connected to the conducting piece.

公开(公告)号：US10170734B2

公开(公告)日：2019-01-01

申请号：US15349938

申请日：2016-11-11

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Quankun Li ,  Jian Guo ,  Peng Wang ,  Pinghua Deng ,  Kai Wu ,  Yongshou Lin

IPC: H01M2/00 ,  H01M2/04 ,  H01M2/34 ,  H01M10/0525

Abstract: The present application provides a top cover of a power battery, including a top cover plate, a first electrode unit and a second electrode unit, the top cover plate is provided with a deformable plate connecting hole and an insulation piece accommodating portion, the first electrode unit includes a deformable plate, a conductive plate and a first insulation piece, the deformable plate seals the deformable plate connecting hole, the conductive plate is located underneath the deformable plate, the first insulation piece includes a top cover plate connecting portion and a conductive plate connecting portion, the top cover plate connecting portion extends into the insulation piece accommodating portion and is fixed thereof, the conductive plate is insulated and fixed with the top cover plate through the conductive plate connecting portion. The present application further provides a power battery, including the top cover of the power battery.

公开(公告)号：US20180138490A1

公开(公告)日：2018-05-17

申请号：US15485818

申请日：2017-04-12

Applicant: Contemporary Amperex Technology Co., Limited

Inventor： Yongshou Lin ,  Quankun Li

IPC: H01M2/34 ,  H01M2/30 ,  H01M2/26

CPC classification number: H01M2/345 ,  H01M2/06 ,  H01M2/206 ,  H01M2/26 ,  H01M2/305 ,  H01M2200/20 ,  H01M2220/20

Abstract: Provided is a secondary battery, which includes a first terminal, a second terminal, a top cover plate, an electrode assembly, a connecting piece and a deformable plate, the electrode assembly comprises a first and a second electrode plate and a separator therebetween; at least one of the first and second terminal is insulatedly arranged from the top cover plate; the connecting piece is electrically connected with the second terminal; in a normal state, the first electrode plate is electrically connected with the first terminal through the deformable plate, the second electrode plate is electrically connected with the second terminal; when an internal pressure of the secondary battery exceeds a reference pressure, the deformable plate deforms to interrupt an electrical connection with the first electrode plate, the deformable plate after deforming is electrically connected with the connecting piece, so that the first terminal is electrically connected with the second terminal.

公开(公告)号：US20170352861A1

公开(公告)日：2017-12-07

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

CPC classification number: H01M2/345 ,  H01M2/043 ,  H01M2/26 ,  H01M2200/20 ,  H01M2220/20

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：US20240413492A1

公开(公告)日：2024-12-12

申请号：US18813076

申请日：2024-08-23

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Chengyou Xing ,  Huasheng Su ,  Quankun Li ,  Weirong Zhuo ,  Haizu Jin

IPC: H01M50/536 ,  H01M50/143 ,  H01M50/179 ,  H01M50/249

Abstract: A battery cell, a battery, and an electric apparatus are provided. The battery cell includes a housing, an electrode lead-out member, an electrode assembly, and an adapter member. The housing is provided with an accommodating cavity. The electrode lead-out member is disposed at the housing. The electrode assembly is accommodated in the accommodating cavity, where the electrode assembly includes a main body portion and a tab led out of the main body portion. The adapter member is configured to connect the tab and the electrode lead-out member, and a light absorbing layer is applied to a welding position of the adapter member. The light absorbing layer is applied to the surface of the adapter member to reduce reflection, increasing the energy absorption rate of the adapter member, and lowering the welding power, and reducing the possibility of other components of the battery cell being burned, thus improving the safety of the battery cell.

公开(公告)号：US20240347824A1

公开(公告)日：2024-10-17

申请号：US18754203

申请日：2024-06-26

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Wenlin Zhou ,  Liangfan Xu ,  Daowei Yang ,  Jian Zhou ,  Quankun Li ,  Peng Wang

IPC: H01M50/15 ,  H01M50/103 ,  H01M50/131 ,  H01M50/553

CPC classification number: H01M50/15 ,  H01M50/103 ,  H01M50/131 ,  H01M50/553

Abstract: Provided are an end cover assembly, a battery cell, a battery, and an electrical device, relating to the field of batteries. The end cover assembly includes an end cover, a groove, and a reinforcing portion. The end cover has a first surface and a second surface opposite in its thickness direction. The groove is recessed from the first surface in a direction towards the second surface. The reinforcing portion protrudes from the first surface and/or the second surface, and surrounds the groove.

公开(公告)号：US20240332762A1

公开(公告)日：2024-10-03

申请号：US18739347

申请日：2024-06-11

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Liangfan Xu ,  Wenlin Zhou ,  Qianqian Zhang ,  Xing Li ,  Quankun Li ,  Shaojun Niu ,  Haizu Jin

IPC: H01M50/59 ,  H01M10/42 ,  H01M50/103 ,  H01M50/15 ,  H01M50/586

CPC classification number: H01M50/59 ,  H01M10/4235 ,  H01M50/103 ,  H01M50/15 ,  H01M50/586

Abstract: A battery cell, a battery and an electricity-consuming apparatus are provided by the present application. The battery cell includes an electrode assembly including an electrode main body that includes an electrode sheet and a separator stacked with each other, and an electrode tab extending from an end face of the electrode main body; and an infiltrating film including a first end and a second end arranged opposite to each other in a length direction thereof, in which the second end is connected to the separator, and the first end extends beyond the electrode main body.

公开(公告)号：US11881588B2

公开(公告)日：2024-01-23

申请号：US17352352

申请日：2021-06-20

Applicant: Contemporary Amperex Technology Co., Limited

Inventor： Yuanbao Chen ,  Rui Yang ,  Haizu Jin ,  Dongyang Shi ,  Ning Chen ,  Quankun Li

IPC: H01M50/538 ,  H01M50/209 ,  H01M50/533 ,  H01M50/186

CPC classification number: H01M50/186 ,  H01M50/209 ,  H01M50/533 ,  H01M50/538

Abstract: The present application relates to a secondary battery and a battery module. The secondary battery comprises: a casing, which is provided with an accommodating hole with an opening; a top cover assembly, which is in sealed connection with the casing to close the opening; an electrode assembly, which is arranged in the accommodating hole, and comprises two end faces opposite to a first direction perpendicular to an axial direction of the accommodating hole, and tabs extending from the end faces, the electrode assembly comprises two or more electrode units, wherein two or more electrode units are stacked in the axial direction, and in a second direction perpendicular to the axial direction and the first direction, the size of the tabs is smaller than that of the end faces; and a current collector, which comprises a body portion.

公开(公告)号：US11777184B2

公开(公告)日：2023-10-03

申请号：US17831673

申请日：2022-06-03

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Qichang Cai ,  Chengyou Xing ,  Libin Zhong ,  Wenwei Chen ,  Quankun Li ,  Peng Wang

IPC: H01M50/645 ,  H01M50/148 ,  H01M50/186 ,  H01M50/60 ,  H01M50/15 ,  H01M50/636

CPC classification number: H01M50/645 ,  H01M50/148 ,  H01M50/186 ,  H01M50/15 ,  H01M50/60 ,  H01M50/636 ,  H01M2220/20 ,  Y02E60/10

Abstract: The present application provides an end cover assembly, a secondary battery, a battery module, a device, a liquid-injection method and a device thereof. The end cover assembly for the secondary battery includes: an end cover, provided with a through hole for injecting electrolyte, and including a connecting portion; a sealing assembly, configured to seal the through hole; a locking-fixing member, configured to be movable relative to the connecting portion in a radial direction of the through hole, so as to realize switching between a locked state and an unlocked state of the locking-fixing member and the connecting portion. In the locked state, the locking-fixing member presses against the sealing assembly to restrict the end cover to be separated from the sealing assembly; in the unlocked state, the end cover and the sealing assembly are separable to allow electrolyte to be injected from the through hole.

公开(公告)号：US11424500B2

公开(公告)日：2022-08-23

申请号：US17120593

申请日：2020-12-14

Applicant: Contemporary Amperex Technology Co., Limited

Inventor： Chengyou Xing ,  Chengdu Liang ,  Ningsheng Wu ,  Wenlong Kang ,  Peng Wang ,  Quankun Li ,  Lingyan Jiang

IPC: H01M50/116

Abstract: The present disclosure relates to a secondary battery, a battery module, and a device using the secondary battery as a power source. The secondary battery includes a casing and a top cover for connecting with the casing. The casing includes an end portion provided with an opening. The top cover is used to cover the opening of the casing. The top cover includes an inserting portion extending into the casing from the opening. A plurality of notches are provided on an inner side of the end portion of the casing or on a side wall of the inserting portion facing the casing. In the secondary battery, the battery module, and the device using the secondary battery as a power source according to the present disclosure, the secondary battery can reduce the possibility of short circuit occurring in the electrode assembly and improve the operational safety of the secondary battery.