公开(公告)号：US11177539B2

公开(公告)日：2021-11-16

申请号：US17356565

申请日：2021-06-24

Applicant: Contemporary Amperex Technology Co., Limited

Inventor： Yuanbao Chen ,  Dongyang Shi ,  Ning Chen ,  Haizu Jin ,  Zhenhua Li ,  Fei Hu

IPC: H01M2/20 ,  H01M50/502 ,  H01M50/147 ,  H01M50/533 ,  H01M50/54 ,  H01M50/543 ,  H01M10/04 ,  H01M10/058 ,  H01M50/50 ,  H01M50/531 ,  H01M10/0525 ,  H01M50/538

Abstract: The present application relates to a current collector and a secondary battery. The current collector is used to electrically connect a pole and tab of a secondary battery, and comprises: a first sheet; a second sheet that is disposed to intersect the first sheet, the second sheet being used to electrically connect to the pole; a current collection unit, the current collection unit and the second sheet being disposed at two opposite sides of the first sheet in a first thickness direction thereof, and the first thickness direction thereof intersecting with a second thickness direction of the second sheet; the current collection unit comprises a first current collection sheet, the first current collection sheet is used to electrically connect to the tab, and the first current collection sheet is provided with a first connection terminal that is connected to the first sheet.

公开(公告)号：US20210328293A1

公开(公告)日：2021-10-21

申请号：US17362960

申请日：2021-06-29

Applicant: Contemporary Amperex Technology Co., Limited

Inventor： Ning Chen ,  Haizu Jin ,  Dongyang Shi ,  Zhenhua Li ,  Fei Hu ,  Yuanbao Chen

IPC: H01M50/171 ,  H01M50/54 ,  H01M50/533 ,  H01M50/209

Abstract: The present disclosure relates to a secondary battery and a battery module. The secondary battery includes a case including a receiving space with an opening; a cap assembly connected to the case and close the opening; an electrode assembly disposed in the receiving space and including two end faces opposite to each other in a first direction perpendicular to an axial direction of the receiving space, and tabs extending from the end faces and two or more electrode units stacked in the axial direction; and a current collecting unit, including a first piece extending in the axial direction and a first current collecting piece connected to the first piece, the tab extends in the first direction and is connected to the first current collecting piece, and a portion of the tab connected to the first current collecting piece and the first current collecting piece are stacked in the axial direction.

公开(公告)号：US11139540B2

公开(公告)日：2021-10-05

申请号：US16437932

申请日：2019-06-11

Applicant: Contemporary Amperex Technology Co., Limited

Inventor： Haizu Jin ,  Dongyang Shi ,  Zhenhua Li ,  Xingdi Chen ,  Ning Chen ,  Fei Hu

IPC: H01M50/54 ,  H01M50/20 ,  H01M50/147 ,  H01M10/04 ,  H01M10/0587

Abstract: The present disclosure relates to a battery module and a battery pack. The battery module comprises two or more secondary batteries arranged side by side in a first direction, each of which includes a case, an electrode assembly and a closing portion, wherein the case has a receiving hole comprising an opening and extending in a second direction, and the first direction intersects with the second direction, wherein the closing portion is sealingly connected with the case to close the opening, the electrode assembly is disposed in the receiving hole and includes two or more electrode units, the electrode unit includes a first electrode plate, a second electrode plate and a separator, and the two or more electrode units are stacked in the second direction.

公开(公告)号：US20210119290A1

公开(公告)日：2021-04-22

申请号：US17137122

申请日：2020-12-29

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Dongyang SHI ,  Haizu Jin ,  Rui Yang ,  Fei Hu ,  Peng Wang ,  Yuqun Zeng ,  Yongshou Lin

IPC: H01M50/183 ,  H01M50/10 ,  H01M50/20

Abstract: The present disclosure provides a battery pack and a vehicle. The battery pack comprises a battery module, a box assembly and a first adhesive member. The battery module comprises first batteries arranged sequentially in a horizontal direction. The first battery comprises an electrode assembly and a case, and the electrode assembly is received in the case. The electrode assembly comprises a first electrode plate, a second electrode plate and a separator. The box assembly has a connection portion, and the connection portion is positioned at a side of the battery module in the vertical direction. An outer surface of the case comprises a first surface, and the first surface is connected with the connection portion via the first adhesive member. An area A of the first surface and an elastic modulus B of the first adhesive member satisfy a relationship: 0.02 cm2/MPa≤A/B≤9 cm2/MPa.

公开(公告)号：US20200161641A1

公开(公告)日：2020-05-21

申请号：US16424020

申请日：2019-05-28

Applicant: Contemporary Amperex Technology Co., Limited

Inventor： Haizu Jin ,  Zhenhua Li ,  Xing Li

IPC: H01M4/36 ,  H01M4/62

Abstract: This application relates to a battery comprising a positive electrode plate, a separator, and a negative electrode plate, wherein the positive electrode plate comprises a positive electrode current collector and at least two layers of positive active material coated on at least one surface of the positive electrode current collector, and wherein an underlying positive active material layer in contact with the positive electrode current collector comprises a first positive active material, a first polymer material and a first conductive material; and wherein an upper positive active material layer in contact with the underlying positive active material layer and away from the positive electrode current collector comprises a second positive active material, a second polymer material and a second conductive material, and the first polymer material comprises fluorinated polyolefin and/or chlorinated polyolefin polymer material. The battery has good safety and improved electrical properties.

公开(公告)号：US20200161639A1

公开(公告)日：2020-05-21

申请号：US16422866

申请日：2019-05-24

Applicant: Contemporary Amperex Technology Co., Limited

Inventor： Xiaowen ZHANG ,  Zhenhua Li ,  Haizu Jin

IPC: H01M4/36 ,  H01M4/62

Abstract: This application relates to a battery comprising a positive electrode plate, a separator, a negative electrode plate and an electrolyte, wherein the positive electrode plate comprises a positive electrode current collector and at least two layers of positive active material coated on at least one surface of the positive electrode current collector, and wherein the underlying positive active material layer in contact with the positive electrode current collector comprises a first positive active material, a first polymer material and a first conductive material, and the first polymer material comprises fluorinated polyolefin and/or chlorinated polyolefin polymer material. The battery has good safety and improved electrical properties, and the viscosity at normal temperature of the electrolyte is ≤4 cp.

公开(公告)号：US10249870B2

公开(公告)日：2019-04-02

申请号：US15409384

申请日：2017-01-18

Applicant: Contemporary Amperex Technology Co., Limited

Inventor： Jiandong Yang ,  Wei Li ,  Haizu Jin ,  Yu Luo ,  Yongshou Lin ,  Kai Wu

IPC: H01M4/02 ,  H01M4/13 ,  H01M2/18 ,  H01M4/66 ,  H01M10/0525 ,  H01M4/70

Abstract: The present application relates to an electrode sheet for Li-ion battery and a Li-ion battery including the same. The Li-ion battery includes a current collector and a diaphragm layer coated on the current collector, the current collector includes a coating region and at least one electrode tab region, the coating region is a region of the current collector coated with the diaphragm layer; the coating region is adjoined with the electrode tab region, a stress releasing region is provided at adjoining position of the coating region and at least one electrode tab region. The stress releasing region provided by the present application can reduce stress received by the diaphragm during rolling and stretching processes, which can avoid cracking of electrode tab and electrode sheet, and can improve battery cycling performance and, at the same time, can also be fused in short circuit, thereby improving safety performance of the battery.

公开(公告)号：US20250087808A1

公开(公告)日：2025-03-13

申请号：US18955852

申请日：2024-11-21

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED ,  GONG YI VAN-RESEARCH INNOVATION COMPOSITE MATERIAL CO., LTD

Inventor： Haizu Jin ,  Qiyong Yu ,  Jicheng Zhang ,  Xizong Liu ,  Duojun Lv ,  Shaojun Niu ,  Endong Xu ,  Zhiwei Xiao ,  Ting Li ,  Jing Li ,  Jiajie Lu

IPC: H01M50/24 ,  H01M50/204 ,  H01M50/222 ,  H01M50/227 ,  H01M50/229 ,  H01M50/231 ,  H01M50/342

Abstract: This application discloses a heat-resistant protective member and a battery. The heat-resistant protective member includes a reinforcing layer, a functional layer, and a strengthening layer that are sequentially arranged; the functional layer includes a first resin and a filler dispersed in the first resin; and the reinforcing layer and the strengthening layer each include a fiber matrix. In the foregoing manner, thermal impact of a single battery during ignition and detonation can be resisted, and structural integrity under the thermal impact can still be prevented from being broken through, so as to provide effective heat insulation and protection for a battery pack.

公开(公告)号：US20240396128A1

公开(公告)日：2024-11-28

申请号：US18797531

申请日：2024-08-08

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Liangfan Xu ,  Qianqian Zhang ,  Hu Xu ,  Xing Li ,  Shaojun Niu ,  Haizu Jin

IPC: H01M50/15 ,  H01M50/103 ,  H01M50/249 ,  H01M50/529 ,  H01M50/55 ,  H01M50/553 ,  H01M50/566

Abstract: This application provides a battery cell, a battery, and an electric device. The battery cell includes: an electrode assembly; a housing, where the housing has a first opening for accommodating the electrode assembly; an end cover configured to cover the first opening, where the end cover has a protruding structure, the protruding structure protrudes along a first direction away from the interior of the battery cell, and the first direction is a thickness direction of the end cover; and an electrode terminal, where the electrode terminal has a protruding portion protruding from the protruding structure along a second direction, and the second direction is perpendicular to the first direction. The battery cells are interconnected in the second direction through the protruding portions of the electrode terminals, which can enhance the strength of the connection between the battery cells.

公开(公告)号：US20240363889A1

公开(公告)日：2024-10-31

申请号：US18765339

申请日：2024-07-08

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Zhisheng Chai ,  Haizu Jin ,  Qingkui Chi

IPC: H01M10/04 ,  H01M50/538

CPC classification number: H01M10/0431 ,  H01M50/538

Abstract: An electrode assembly, a battery cell, a battery, and an electric device are provided. The electrode assembly includes a first electrode plate, a second electrode plate, and a separator disposed between the first electrode plate and the second electrode plate. The first electrode plate, the separator, and the second electrode plate are wound in a winding direction to form a wound structure, where at least one of the first electrode plate and the second electrode plate includes: a current collector substrate; an active substance layer, disposed on at least one surface on a side, adjacent to the separator, of the current collector substrate; and a tab set, connected to a side edge of the current collector substrate that extends in the winding direction, where the tab set includes a plurality of tabs spaced apart in the winding direction.