公开(公告)号：US11329280B2

公开(公告)日：2022-05-10

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 ,  H01M4/02

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：US11329269B2

公开(公告)日：2022-05-10

申请号：US16424036

申请日：2019-05-28

Applicant: Contemporary Amperex Technology Co., Limited

Inventor： Yuqun Zeng ,  Yongshou Lin ,  Zhenhua Li ,  Haizu Jin ,  Xiaowen Zhang

IPC: H01M4/13 ,  H01M4/131 ,  H01M4/505 ,  H01M4/525 ,  H01M4/587 ,  H01M10/052 ,  H01M10/058 ,  H01M10/42 ,  H01M50/409 ,  H01M50/545 ,  H01M50/572

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：US11264611B2

公开(公告)日：2022-03-01

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 ,  H01M4/02

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：US11264610B2

公开(公告)日：2022-03-01

申请号：US16422860

申请日：2019-05-24

Applicant: Contemporary Amperex Technology Co., Limited

Inventor： Fenggang Zhao ,  Yongshou Lin ,  Zhenhua Li ,  Haizu Jin ,  Xiaowen Zhang

IPC: H01M4/62 ,  H01M4/02 ,  H01M4/36

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 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.

公开(公告)号：US11251487B2

公开(公告)日：2022-02-15

申请号：US16441895

申请日：2019-06-14

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Peng Wang ,  Haizu Jin ,  Linggang Zhou ,  Dongyang Shi ,  Xingdi Chen ,  Kaijie You

IPC: H01M2/10 ,  H01M2/12 ,  H01M10/04 ,  H01M50/20 ,  H01M50/30

Abstract: Disclosed is a battery module including a battery cell array structure, an upper cap and a lower cap, the battery cell array structure is disposed between the upper cap and the lower cap. Each battery cell includes an electrode assembly and a battery case. The electrode assembly is of a wound structure and flat, outer surface of the electrode assembly includes two flat surfaces facing each other in a vertical direction; or the electrode assembly is of a laminated structure, the first electrode plate, the separator and the second electrode plate are laminated in the vertical direction. Being distinguished from the existing technology, the maximum swelling force of the battery module may be reduced, thus end plates with smaller volumes may be selected to improve energy density of the battery module.

公开(公告)号：US11177542B2

公开(公告)日：2021-11-16

申请号：US16424048

申请日：2019-05-28

Applicant: Contemporary Amperex Technology Co., Limited

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

IPC: H01M2/26 ,  H01M10/0587 ,  H01M10/04 ,  H01M2/04 ,  H01M2/10 ,  H01M50/54 ,  H01M50/20 ,  H01M50/147

Abstract: The present disclosure relates to a secondary battery and a battery module. The secondary battery comprises a case, comprising a base plate and a side plate connected with the base plate, wherein the base plate and the side plate form a receiving hole and an opening in communication with the receiving hole, the opening is arranged opposite to the base plate in an axial direction of the receiving hole, and the base plate has a thickness larger than that of the side plate; a cap assembly, sealingly connected with the side plate to close the opening; and an electrode assembly, disposed in the receiving hole and comprising two or more electrode units, which are stacked in the axial direction, and each electrode unit is arranged with a wide side opposite to the base plate and a narrow side toward the side plate.

公开(公告)号：US11101515B2

公开(公告)日：2021-08-24

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: H01M6/46 ,  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：US11088423B2

公开(公告)日：2021-08-10

申请号：US16424026

申请日：2019-05-28

Applicant: Contemporary Amperex Technology Co., Limited

Inventor： Haizu Jin ,  Dongyang Shi ,  Ning Chen ,  Zhenhua Li

IPC: H01M2/26 ,  H01M50/531

Abstract: The disclosure relates to a secondary battery and a battery module. The secondary battery comprises: a case comprising a receiving hole having an opening; a cap assembly connected with the case to close the opening; an electrode assembly disposed in the receiving hole, wherein the electrode assembly comprises two end surfaces opposite to each other in a first direction and tabs extending from respective end surfaces, and there are two or more electrode assemblies stacked in the axial direction; and a current collector comprising an extending portion and a current collecting portion connected to the tab, wherein the extending portion extends in the axial direction, the current collecting portion comprises a connecting end extending in a second direction perpendicular to both the axial direction and the first direction, and is connected to an end of the extending portion away from the cap assembly through the connecting end.

公开(公告)号：US10910622B2

公开(公告)日：2021-02-02

申请号：US16234955

申请日：2018-12-28

Applicant: Contemporary Amperex Technology Co., Limited

Inventor： Jiandong Yang ,  Jian Guo ,  Chengyou Xing ,  Xiaowen Zhang ,  Haizu Jin ,  Yongshou Lin

IPC: H01M2/20 ,  H01M2/26 ,  H01M10/0525

Abstract: A connection member and a rechargeable battery are provided. The connection member includes a guide plate, two first connection plates and a second connection plate; the two first connection plates are respectively connected to two sides of the guide plate in a width direction and are arranged bendably with respect to the guide plate; the second connection plate is connected to an upper end of the guide plate in a height direction Z, and the top ends of the two first connection plates are at different heights. In some examples, overcurrent capability of the connection member and rapid charging capability and safety performance of the rechargeable battery can be improved.