公开(公告)号：US20250054989A1

公开(公告)日：2025-02-13

申请号：US18926423

申请日：2024-10-25

Applicant: Contemporary Amperex Technology Co., Limited

Inventor： Haizu JIN ,  Zhenhua LI ,  Xing LI

IPC: H01M4/62 ,  H01G11/06 ,  H01G11/28 ,  H01G11/50 ,  H01M4/02 ,  H01M4/505 ,  H01M4/525 ,  H01M4/66 ,  H01M6/50 ,  H01M10/0525

Abstract: The present application relates to a positive electrode plate and an electrochemical device. The positive electrode plate comprises a metal current collector, a positive active material layer and a safety coating disposed between the metal current collector and the positive active material layer, the safety coating comprising a polymer matrix, a conductive material and an inorganic filler wherein the polymer matrix is a fluorinated polyolefin and/or chlorinated polyolefin polymer matrix, wherein based on the total weight of the safety coating, the polymer matrix is present in a weight percentage of 35-75% by weight, the conductive material is present in a weight percentage of 5-25% by weight and the inorganic filler is present in a weight percentage of 10-60% by weight, and wherein the metal current collector has an elongation at break δ fulfilling 0.8%≤δ≤4%.

公开(公告)号：US20240313203A1

公开(公告)日：2024-09-19

申请号：US18676871

申请日：2024-05-29

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Jianghui LIN ,  Yanjie ZHAO ,  Xing LI ,  Haizu JIN

IPC: H01M4/36 ,  H01M4/02 ,  H01M4/505 ,  H01M4/525 ,  H01M4/58 ,  H01M50/249

CPC classification number: H01M4/366 ,  H01M4/505 ,  H01M4/525 ,  H01M4/5825 ,  H01M50/249 ,  H01M2004/021 ,  H01M2004/028

Abstract: A positive electrode plate includes a current collector and an electrode membrane formed on at least one surface of the current collector. The electrode membrane includes a first positive electrode active substance layer and a second positive electrode active substance layer, and the first positive electrode active substance layer is located between the current collector and the second positive electrode active substance layer. A first positive electrode active substance material in the first positive electrode active substance layer contains hollow particles, and a second positive electrode active substance material in the second positive electrode active substance layer contains solid particles.

公开(公告)号：US20240304940A1

公开(公告)日：2024-09-12

申请号：US18654014

申请日：2024-05-03

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Xing LI ,  Haizu JIN ,  Zhenhua LI

IPC: H01M50/383 ,  H01M50/209

CPC classification number: H01M50/383 ,  H01M50/209 ,  H01M2220/20

Abstract: The present application relates to a battery and a power consuming device. The battery includes: a case with an accommodating cavity therein; several battery cells arranged in the accommodating cavity; a collection assembly, which is fitted in the accommodating cavity and is configured to collect a conductive medium ejected when each of the battery cells undergoes thermal runaway.

公开(公告)号：US20240283059A1

公开(公告)日：2024-08-22

申请号：US18650145

申请日：2024-04-30

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Hu XU ,  Xing LI ,  Haizu JIN ,  Shaojun NIU ,  Fenggang ZHAO

IPC: H01M50/103 ,  H01M50/538 ,  H01M50/54 ,  H01M50/548 ,  H01M50/586 ,  H01M50/593

CPC classification number: H01M50/103 ,  H01M50/538 ,  H01M50/54 ,  H01M50/548 ,  H01M50/586 ,  H01M50/593

Abstract: A battery cell includes: a housing; an electrode unit accommodated in the housing and including a first electrode assembly and a second electrode assembly which are disposed along a first direction, wherein the first electrode assembly and the second electrode assembly are arranged in parallel, the first electrode assembly includes a first body and a first tab, and the second electrode assembly includes a second body and a second tab, and wherein a polarity of the first tab is the same as a polarity of the second tab, and at least a part of the first tab and at least a part of the second tab are located between the first body and the second body; and a first electrode terminal disposed on the housing and electrically connected to the first tab and the second tab to export electric energies of the first electrode assembly and the second electrode assembly.

公开(公告)号：US20240274962A1

公开(公告)日：2024-08-15

申请号：US18637389

申请日：2024-04-16

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Hu XU ,  Shaojun NIU ,  Haizu JIN ,  Xing LI ,  Fenggang ZHAO

IPC: H01M50/291 ,  H01M10/04 ,  H01M10/6554 ,  H01M50/213

CPC classification number: H01M50/291 ,  H01M10/0431 ,  H01M10/6554 ,  H01M50/213

Abstract: A battery cell includes a shell and three electrode assemblies wound into cylinders. The three electrode assemblies are arranged in a row in the shell in such a manner that axes of the three electrode assemblies are parallel to one another, the shell has a thickness middle surface connected to the axes of the three electrode assemblies, the thickness middle surface is in a V shape, the shell has a first side surface and a second side surface both in an arcuate wavy shape, the first side surface and the second side surface are opposite each other relative to the thickness middle surface of the shell, and the three electrode assemblies are arranged between the first side surface and the second side surface.

公开(公告)号：US20240250346A1

公开(公告)日：2024-07-25

申请号：US18430446

申请日：2024-02-01

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Hu XU ,  Haizu JIN ,  Shaojun NIU ,  Xing LI ,  Xiaomei LIU

IPC: H01M50/103 ,  H01M50/553

CPC classification number: H01M50/103 ,  H01M50/553 ,  H01M2220/20

Abstract: The embodiments of the present application provide a battery cell, a method and system for manufacturing a battery cell, a battery and an electrical device. The battery cell of the embodiment includes an electrode assembly, a casing, and a first electrode terminal. The casing is for accommodating the electrode assembly, an outer surface of the casing includes an outer side surface parallel to a first direction and a first surface connected with the outer side surface, the outer side surface is arranged surrounding the electrode assembly, the first surface intersects the first direction. The first electrode terminal is convexly arranged on the first surface and for electrically connecting with the electrode assembly, the first electrode terminal does not protrude, in the first direction, from an outermost end of the first surface along the first direction.

公开(公告)号：US20230307740A1

公开(公告)日：2023-09-28

申请号：US18195443

申请日：2023-05-10

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Xiangyan BU ,  Wenlin ZHOU ,  Xing LI ,  Xinxiang CHEN ,  Peng WANG ,  Haizu JIN

IPC: H01M10/654 ,  H01M50/103 ,  H01M50/15 ,  H01M50/474 ,  H01M10/04

CPC classification number: H01M10/654 ,  H01M50/103 ,  H01M50/15 ,  H01M50/474 ,  H01M10/049

Abstract: Embodiments of the present application provide a battery cell. The battery cell may include: a casing having an accommodating space; an electrode assembly accommodated in the accommodating space, the electrode assembly comprising electrode plates; and a heat-conducting structure configured to be directly connected to the electrode plates and the casing to conduct heat from the electrode assembly to the casing.

公开(公告)号：US20230307624A1

公开(公告)日：2023-09-28

申请号：US18315805

申请日：2023-05-11

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Hanli FU ,  Zhenhua LI ,  Jiawei XU ,  Ziyu YANG ,  Shuoyan XU ,  Qiang GUO ,  Xing LI ,  Shaojun NIU ,  Haizu JIN

IPC: H01M4/505 ,  H01M4/58 ,  H01M10/0525 ,  H01M10/054 ,  H01M4/131

CPC classification number: H01M4/505 ,  H01M4/5825 ,  H01M10/0525 ,  H01M10/054 ,  H01M4/131

Abstract: A secondary battery includes a negative electrode plate and a positive electrode plate. The negative electrode plate includes a negative electrode active material. The positive electrode plate includes a positive electrode active material. The negative electrode active material is selected from one or more of a silicon-based material and a tin-based material. The positive electrode active material has a molecular formula of M1xMnyM2zOaAb. M1 represents one or two of Mg and Al. M2 represents one or two of Co and Ni. A represents one or more of N, P, and S. 0

公开(公告)号：US20230163405A1

公开(公告)日：2023-05-25

申请号：US18094035

申请日：2023-01-06

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Wenlin ZHOU ,  Xing LI ,  Wenwei CHEN ,  Liangfan XU ,  Peng WANG ,  Haizu JIN

IPC: H01M50/30 ,  H01M50/593 ,  H01M50/578 ,  H01M50/148 ,  H01M10/04 ,  H01M10/613 ,  H01M10/6551

CPC classification number: H01M50/30 ,  H01M50/593 ,  H01M50/578 ,  H01M50/148 ,  H01M10/04 ,  H01M10/613 ,  H01M10/6551 ,  H01M2220/20

Abstract: Described is a battery cell, which includes a casing having a first opening; an electrode assembly received in the casing, the electrode assembly having a first tab, a second tab and a third tab, the first tab having an opposite polarity to the second tab, and the third tab having the same polarity as the first tab or the second tab; an end cap for closing the first opening; an insulating member disposed between the end cap and the electrode assembly, wherein the third tab is configured to be connected with the insulating member. It is possible to improve the heat dissipation efficiency of the battery cell by additionally providing a heat dissipation path of the electrode assembly—the third tab—the insulating member—the end cap, thereby improving the overcurrent capacity and the safety performance of the battery cell.

公开(公告)号：US20220311056A1

公开(公告)日：2022-09-29

申请号：US17563309

申请日：2021-12-28

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Hu XU ,  Miaomiao REN ,  Xing LI ,  Haizu JIN

IPC: H01M10/0587 ,  H01M4/02

Abstract: An embodiment of the present application provides an electrode assembly, a battery cell, a battery, and a manufacturing method and device for the electrode assembly, which belong to the technical field of batteries. The electrode assembly includes a negative electrode plate and a positive electrode plate. The negative electrode plate includes a negative active material layer located in the straight area, and the positive electrode plate includes a positive active material layer located in the straight area. A first direction is perpendicular to an axial direction of a winding structure. The negative active material layer includes a negative electrode main body portion and negative electrode edge portions located on both sides of the negative electrode main body portion. The electrode assembly of this structure can effectively reduce the risk of lithium plating and improve the safety of the battery.