公开(公告)号：US20240332546A1

公开(公告)日：2024-10-03

申请号：US18739333

申请日：2024-06-11

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Zige Zhang ,  Qingrui Xue ,  Wei Li ,  Yu Zhang ,  Zhengyuan Zhao ,  Jinsong Zhang

IPC: H01M4/70 ,  H01M4/66 ,  H01M10/04 ,  H01M50/538

CPC classification number: H01M4/70 ,  H01M4/667 ,  H01M10/0431 ,  H01M50/538

Abstract: Provided are an electrode plate, an electrode assembly, a battery cell, a battery, and an electric device, where the electrode plate includes an active substance region and a non-active substance region arranged along a first direction. The non-active substance region is provided with a bending structure bent along a second direction, the bending structure extends along a third direction, and in the third direction, the active substance region and the bending structure have the same size, where the second direction is a thickness direction of the active substance region, and the first direction, the second direction, and the third direction are perpendicular to each other. This not only increases the space utilization and energy density of the battery cell, but also simplifies the production process and improves the production efficiency of the battery cell.

公开(公告)号：US20240332541A1

公开(公告)日：2024-10-03

申请号：US18743130

申请日：2024-06-14

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Qingrui Xue ,  Zige Zhang ,  Wei Li ,  Yu Zhang ,  Zhengyuan Zhao ,  Jinsong Zhang

IPC: H01M4/66 ,  H01M4/02 ,  H01M10/04 ,  H01M50/213 ,  H01M50/536

CPC classification number: H01M4/667 ,  H01M10/0431 ,  H01M50/213 ,  H01M50/536 ,  H01M2004/021

Abstract: Provided are an electrode plate, including a current collector, an active substance layer, and a conductive structure. The current collector includes a body portion and a tab portion provided along a first direction, where the body portion is covered with the active substance layer, the tab portion is not covered with the active substance layer, and the conductive structure extends along the first direction and is connected to the tab portion, forming a connecting zone. In a second direction, the connecting zone has a dimension greater than thickness of a body region of the electrode plate, so that after an electrode assembly is wound, connecting zones of adjacent layers are mutually attached; where the second direction is a thickness direction of the electrode plate, the second direction is perpendicular to the first direction.

公开(公告)号：US20240313366A1

公开(公告)日：2024-09-19

申请号：US18672003

申请日：2024-05-23

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Qingrui Xue ,  Zige Zhang ,  Wei Li ,  Yu Zhang ,  Zhengyuan Zhao ,  Jinsong Zhang

IPC: H01M50/536 ,  H01M50/528 ,  H01M50/538

CPC classification number: H01M50/536 ,  H01M50/528 ,  H01M50/538

Abstract: Embodiments of this application provide a battery cell, a battery, and an electric device. The battery cell includes an electrode assembly, and the electrode assembly includes a body portion and a lead-out portion that are disposed in a first direction, the body portion being electrically connected to an electrode terminal via the lead-out portion. The lead-out portion includes a tab portion and a conductive structure. A first end of the conductive structure is welded to the tab portion to form a welded zone, a second end of the conductive structure is connected to the electrode terminal, and the conductive structure extends along a direction leaving the body portion. A melting zone is provided between the welded zone and the body portion. The technical solution of this application can reduce the probability of thermal runaway of batteries.

公开(公告)号：US11804604B2

公开(公告)日：2023-10-31

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 ,  H01M4/60 ,  H01M4/62 ,  H01M10/0525 ,  H01M4/02

CPC classification number: H01M4/667 ,  H01M4/133 ,  H01M4/134 ,  H01M4/602 ,  H01M4/623 ,  H01M4/661 ,  H01M10/0525 ,  H01M2004/028

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：US11664486B2

公开(公告)日：2023-05-30

申请号：US16452534

申请日：2019-06-26

Applicant: Contemporary Amperex Technology Co., Limited

Inventor： Qingrui Xue ,  Wei Li ,  Jing Li ,  Zige Zhang ,  Xianwei Yang

IPC: H01M4/131 ,  H01M4/505 ,  H01M4/525 ,  H01M4/62 ,  H01M10/0525 ,  H01M4/02 ,  H01M4/587 ,  H01M10/058 ,  H01M10/42 ,  H01M50/586

CPC classification number: H01M4/131 ,  H01M4/505 ,  H01M4/525 ,  H01M4/587 ,  H01M4/622 ,  H01M10/058 ,  H01M10/0525 ,  H01M10/4235 ,  H01M50/586 ,  H01M2004/028

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：US11575134B2

公开(公告)日：2023-02-07

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 ,  H01M4/131 ,  H01M4/133 ,  H01M4/134 ,  H01M4/137 ,  H01M4/36 ,  H01M4/505 ,  H01M4/525 ,  H01M4/66 ,  H01M10/0525 ,  H01M4/02

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：US20230395809A1

公开(公告)日：2023-12-07

申请号：US18231264

申请日：2023-08-08

Applicant: Contemporary Amperex Technology Co., Limited

Inventor： Chengdu LIANG ,  Jing Li ,  Wei Li ,  Qingrui Xue ,  Zige Zhang ,  Xianwel Yang

IPC: H01M4/66 ,  H01M4/13 ,  H01M4/62 ,  H01M10/0525

CPC classification number: H01M4/667 ,  H01M4/13 ,  H01M4/622 ,  H01M4/625 ,  H01M4/661 ,  H01M4/668 ,  H01M10/0525 ,  H01M2004/021

Abstract: The electrode plate includes a current collector and an electrode active material layer disposed on at least one surface of the current collector, wherein the current collector includes a support layer and a conductive layer, the conductive layer has a single-sided thickness D2 satisfying: 30 nm≤D2≤3 μm; the electrode active material layer is divided into two regions, an inner region and an outer region in a thickness direction of the electrode active material layer, in which the weight percentage of the conductive agent in the inner region of the electrode active material layer is higher than the weight percentage content of the conductive agent in the outer region of the electrode active material layer, and the conductive agent in the inner region of the electrode active material layer includes at least one of a one-dimensional conductive material and a two-dimensional conductive material.

公开(公告)号：US11769883B2

公开(公告)日：2023-09-26

申请号：US15734469

申请日：2019-11-20

Applicant: Contemporary Amperex Technology Co., Limited

Inventor： Chengdu Liang ,  Jing Li ,  Wei Li ,  Qingrui Xue ,  Zige Zhang ,  Xianwei Yang

IPC: H01M4/66 ,  H01M4/13 ,  H01M4/62 ,  H01M10/0525 ,  H01M4/02

CPC classification number: H01M4/667 ,  H01M4/13 ,  H01M4/622 ,  H01M4/625 ,  H01M4/661 ,  H01M4/668 ,  H01M10/0525 ,  H01M2004/021

Abstract: The electrode plate includes a current collector and an electrode active material layer disposed on at least one surface of the current collector, wherein the current collector includes a support layer and a conductive layer, the conductive layer has a single-sided thickness D2 satisfying: 30 nm≤D2≤3 μm; the electrode active material layer is divided into two regions, an inner region and an outer region in a thickness direction of the electrode active material layer, in which the weight percentage of the conductive agent in the inner region of the electrode active material layer is higher than the weight percentage content of the conductive agent in the outer region of the electrode active material layer, and the conductive agent in the inner region of the electrode active material layer includes at least one of a one-dimensional conductive material and a two-dimensional conductive material.

公开(公告)号：US11749808B2

公开(公告)日：2023-09-05

申请号：US17335034

申请日：2021-05-31

Applicant: Contemporary Amperex Technology Co., Limited

Inventor： Chengdu Liang ,  Jing Li ,  Wei Li ,  Qingrui Xue ,  Zige Zhang ,  Yang Zhang

IPC: H01M4/66 ,  H01M4/62 ,  H01M4/505 ,  H01M4/525 ,  H01M10/0525 ,  H01M4/02

CPC classification number: H01M4/667 ,  H01M4/625 ,  H01M4/662 ,  H01M4/505 ,  H01M4/525 ,  H01M4/623 ,  H01M10/0525 ,  H01M2004/027 ,  H01M2004/028 ,  H01M2220/10 ,  H01M2220/20

Abstract: The electrode plate according to the present application includes a current collector and an electrode active material layer disposed on at least one surface of the current collector, wherein the current collector includes a support layer and a conductive layer disposed on at least one surface of the support layer, the conductive layer has a single-sided thickness D2 satisfying: 30 nmD23 μm; and a conductive primer layer containing a first conductive material and a binder is provided between the current collector and the electrode active material layer, and the first conductive material in the conductive primer layer comprises at least one of a one-dimensional conductive material and a two-dimensional conductive material. The electrode plate of the present application has good workability, and the electrochemical device including the electrode plate has high energy density, good electrical performance and long-term reliability.

公开(公告)号：US11658329B2

公开(公告)日：2023-05-23

申请号：US17233337

申请日：2021-04-16

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Wei Li ,  Zige Zhang ,  Chengdu Liang ,  Qingrui Xue ,  Jing Li ,  Pengxiang Wang

IPC: H01M10/04 ,  H01M4/02 ,  H01M50/538 ,  H01M50/536 ,  H01M50/534

CPC classification number: H01M10/0436 ,  H01M4/02 ,  H01M50/534 ,  H01M50/536 ,  H01M50/538 ,  H01M2004/021

Abstract: The present disclosure provides a secondary battery and an electrode plate thereof. The electrode plate comprises a current collector, an active material layer and a second conducting layer. The current collector comprises an insulating layer and a first conducting layer disposed on at least one surface of the insulating layer; and the active material layer is disposed on a main portion of the first conducting layer. The first conducting layer further includes a protruding portion not coated with the active material layer. The second conducting layer comprises a first portion disposed on a surface of the protruding portion of the first conducting layer opposite to the insulating layer. The secondary battery comprises an electrode assembly, the electrode assembly comprises the electrode plate.