公开(公告)号：US20240055670A1

公开(公告)日：2024-02-15

申请号：US18384615

申请日：2023-10-27

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Zige ZHANG ,  Qingrui XUE ,  Wei LI ,  Yu ZHANG ,  Zhengyuan ZHAO

IPC: H01M10/0587 ,  H01M50/107 ,  H01M50/533 ,  H01M50/538

CPC classification number: H01M10/0587 ,  H01M50/107 ,  H01M50/533 ,  H01M50/538 ,  H01M2220/20

Abstract: A cylindrical electrode assembly of a coiled structure includes a main body and a first tab. The main body is provided with a first end face, and the first tab extends out of the first end face and is bent toward the first end face.

公开(公告)号：US20230231249A1

公开(公告)日：2023-07-20

申请号：US17970603

申请日：2022-10-21

Applicant: Contemporary Amperex Technology Co., Limited

Inventor： Chengdu LIANG ,  Quanguo LI ,  Yonghuang YE ,  Qian LIU ,  Haizu JIN ,  Wei LI

IPC: H01M50/204 ,  H01M4/583 ,  H01M4/525 ,  H01M4/58 ,  H01M10/04

CPC classification number: H01M50/204 ,  H01M4/583 ,  H01M4/525 ,  H01M4/5825 ,  H01M10/0404 ,  H01M2004/027

Abstract: The present application discloses a battery module, a battery pack, an apparatus, and a method and device for manufacturing a battery module. The battery module includes n first-type battery cells and m second-type battery cells, n≥1, m≥1, and the n first-type battery cells and them second-type battery cells are arranged and satisfy: VED1>VED2, ΔF1>ΔF2, and (ΔF1×n+ΔF2×m)/(n+m)≤0.8×ΔF1, where VED1, VED2, ΔF1 and ΔF2 are respectively defined in the description.

公开(公告)号：US20220131218A1

公开(公告)日：2022-04-28

申请号：US17564989

申请日：2021-12-29

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Xinxiang CHEN ,  Yulian ZHENG ,  Shoujun HUANG ,  Peng WANG ,  Wei LI

IPC: H01M50/183 ,  H01M50/148 ,  H01M10/48 ,  H01M50/627

Abstract: The present application relates to an end cover assembly, a battery cell, a battery, a power consumption device and a liquid injection method. The end cover assembly includes an end cover, a sealing piece and a cover body, wherein the end cover is provided with a first hole for injecting electrolyte; the sealing piece is configured to seal the first hole; the cove body is configured to cover at least part of the sealing piece, the cover body is rotatable relative to the end cover to realize detachable connection between the cover body and the end cover; one of the sealing piece and the cover body is provided with a second hole, the other one of the sealing piece and the cover body is provided with a boss; the boss is inserted into the second hole, and the boss and the second hole are relatively rotatable.

公开(公告)号：US20220123375A1

公开(公告)日：2022-04-21

申请号：US17563080

申请日：2021-12-28

Applicant: Contemporary Amperex Technology CO., Limited

Inventor： Chengdu LIANG ,  Qian LIU ,  Quanguo LI ,  Yonghuang YE ,  Wei LI

IPC: H01M10/42 ,  H01M50/258 ,  H01M50/509 ,  H01M10/625

Abstract: The present application provides a battery module, an apparatus, a battery pack, and a method and device for manufacturing the battery module. The battery module includes: a first-type battery cell and a second-type battery cell, which are connected in series, the first-type battery cell and the second-type battery cell are battery cells of different chemical system, and the volume energy density of the first-type battery cell is less than the volume energy density of the second-type battery cell; and the capacity Cap1 of the first-type battery cell is greater than the capacity Cap2 of the second-type battery cell. While ensuring the safety performance of the battery module, the service life and the energy throughput of the battery module are effectively improved.

公开(公告)号：US20220093934A1

公开(公告)日：2022-03-24

申请号：US17543954

申请日：2021-12-07

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Yaru ZHOU ,  Qingrui XUE ,  Zige ZHANG ,  Miao JIANG ,  Jing LI ,  Wei LI ,  Long WANG

IPC: H01M4/66 ,  H01M4/70 ,  H01M50/531

Abstract: The present disclosure relates to a secondary battery and an electrode plate. The electrode plate includes a current collector, an active material layer, a conductive structure, and a first protective layer. The current collector includes an insulating layer and a conductive layer disposed on the insulating layer. The conductive layer includes a main body portion and a protrusion portion. A surface of the main body portion facing away from the insulating layer is covered by the active material layer, while a surface of the protrusion portion facing away from the insulating layer is uncovered by the active material layer. The conductive structure is welded to the protrusion portion and thus a welded zone is formed. The first protective layer has elasticity, and is disposed on a side of the protrusion portion facing away from the insulating layer and is located between the welded zone and the active material layer.

公开(公告)号：US20220093932A1

公开(公告)日：2022-03-24

申请号：US17540263

申请日：2021-12-02

Applicant: Contemporary Amperex Technology Co., Limited

Inventor： Wei LI ,  Jing LI ,  Qingrui XUE ,  Zige ZHANG ,  Yang ZHANG ,  Xianwei YANG

IPC: H01M4/66 ,  H01M4/62

Abstract: This application relates to an electrode plate, an electrochemical apparatus, and an apparatus thereof. The electrode plate of this application includes a current collector, an electrode active material layer provided on at least one surface of the current collector, and an electrical connection member electrically connected to the current collector. The electrode active material layer is provided on a main body portion of the current collector in a zone referred to as a film zone, the electrical connection member and the current collector are welded and connected at an edge of the current collector, at a welding zone referred to as an transfer welding zone and a transition zone is referred to as an extension zone, where the transition zone is of the current collector between the film zone and the transfer welding zone, and is coated with no electrode active material layer.

公开(公告)号：US20220037669A1

公开(公告)日：2022-02-03

申请号：US17501902

申请日：2021-10-14

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Jing LI ,  Qingrui XUE ,  Wei LI ,  Zige ZHANG ,  Yang ZHANG ,  Yang LU

IPC: H01M4/66 ,  H01M10/0525 ,  H01M4/13

Abstract: This application relates to the battery field, and specifically, to an electrode plate, an electrochemical device, and an apparatus. The electrode plate of this application includes a current collector and an electrode active material layer disposed on at least one surface of the current collector, where the current collector includes a support layer and a conductive layer disposed on at least one surface of the support layer, a single-sided thickness D2 of the conductive layer satisfies 30 nm≤D2≤3 μm, the support layer is made of a polymer material or a polymer composite material, and a thickness D1 of the support layer satisfies 1 μm≤D1≤30 μm; and the electrode active material layer includes an electrode active material, a binder, and a conductive agent.

公开(公告)号：US20210151769A1

公开(公告)日：2021-05-20

申请号：US17139124

申请日：2020-12-31

Applicant: Contemporary Amperex Technology Co., Limited

Inventor： Jing LI ,  Qingrui XUE ,  Wei LI ,  Zige ZHANG ,  Yang ZHANG ,  Xianwei YANG

IPC: H01M4/66 ,  H01M4/133 ,  H01M4/134 ,  H01M4/62 ,  H01M4/60 ,  H01M10/0525

Abstract: The present application relates to the field of battery, in particular to a positive electrode piece, an electrochemical device and an apparatus. The positive electrode piece of the present application includes a current collector and an electrode active material layer arranged on at least one surface of the current collector, where the current collector includes a support layer and a conductive layer arranged on at least one surface of the support layer. The thickness D2 of one side of the conductive layer D2 satisfies 30 nm≤D2≤3 μm, the material of the conductive layer is aluminum or aluminum alloy, and the density of the conductive layer is 2.5 g/cm3 to 2.8 g/cm3, and a primer layer containing a conductive material and a binder is also arranged between the current collector and the electrode active material layer.

公开(公告)号：US20210013513A1

公开(公告)日：2021-01-14

申请号：US16969475

申请日：2019-11-15

Applicant: Contemporary Amperex Technology Co., Limited

Inventor： Wei LI ,  Qingrui XUE ,  Jing LI ,  Zige ZHANG ,  Jianbao XU

IPC: H01M4/62 ,  H01M4/66 ,  H01M4/36 ,  H01M4/137 ,  H01M4/131 ,  H01M4/134 ,  H01M4/525 ,  H01M4/505 ,  H01M4/133 ,  H01M10/0525

Abstract: This application relates to a positive electrode plate and an electrochemical device. The positive electrode plate comprises a metal current collector, a positive electrode active material layer and a safety coating disposed between the metal current collector and the positive electrode active material layer; the safety coating comprises a polymer matrix, a conductive material and an inorganic filler; the positive electrode active material layer comprises Li1+xNiaCobMe(1−a−b)O2, wherein −0.1≤x≤0.2, 0.6≤a

公开(公告)号：US20200161640A1

公开(公告)日：2020-05-21

申请号：US16422872

申请日：2019-05-24

Applicant: Contemporary Amperex Technology Co., Limited

Inventor： Wei LI ,  Haihao SHI ,  Huihui LIU ,  Chao JIN ,  Tianyi GAO ,  Jianbao XU ,  Shisong LI ,  Chao GUO

IPC: H01M4/36 ,  H01M4/62

Abstract: The present invention 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 materials on at least one surface of the positive electrode current collector in which 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 in which the upper positive active material layer comprises a second positive active material, a second polymer material, and a second conductive material and the first polymer material comprises an oil-dispersible polymer material having a solubility in NMP at 130° C. for 5 minutes, which is 30% or less of the solubility of PVDF under the same conditions. The battery exhibits good safety performance and improved electrical performance.