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.

公开(公告)号：US20220246993A1

公开(公告)日：2022-08-04

申请号：US17717736

申请日：2022-04-11

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Haizu JIN ,  Hu XU ,  Xinxin DU ,  Xing LI ,  Chengdu LIANG ,  Yuqun ZENG

IPC: H01M10/0587

Abstract: Embodiments of the present application provide an electrode assembly, a battery cell, a battery, and a method and a device for manufacturing an electrode assembly. The electrode assembly includes a first electrode plate and a second electrode plate. The first electrode plate and the second electrode plate are wound along a winding direction to form a winding structure, and the winding structure includes a bending region. The first electrode plate includes a first segment that exceeds a winding starting end of the second electrode plate, and at least a part of the first segment is configured to provide a support force to a part of the first electrode plate and the second electrode plate in the bending region and located at an outer side the first segment, making a structure of the first electrode plate and the second electrode plate more compact in the bending region.

公开(公告)号：US20220140345A1

公开(公告)日：2022-05-05

申请号：US17577823

申请日：2022-01-18

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Xing LI ,  Yaohui WANG ,  Haizu JIN

IPC: H01M4/58

Abstract: This application provides a positive electrode plate includes a positive electrode current collector, a first positive electrode membrane, and a second positive electrode membrane. The first positive electrode membrane includes a first positive electrode active material selected from one or more of phosphate materials LiFe1-x-yMnxMyPO4, where 0≤x≤1, 0≤y≤0.1, 0≤x+y≤1, M is selected from one or more of Cr, Mg, Ti, Al, Zn, W, Nb, or Zr. The second positive electrode membrane is arranged on the first positive electrode membrane and includes a second positive electrode active material, gram capacity of the second positive electrode active material is greater than gram capacity of the first positive electrode active material, the second positive electrode active material is different from the first positive electrode active material. Thickness D0 of the positive electrode current collector is less than or equal to thickness D1 of the first positive electrode membrane.

公开(公告)号：US20190140328A1

公开(公告)日：2019-05-09

申请号：US16138451

申请日：2018-09-21

Applicant: Contemporary Amperex Technology Co., Limited

Inventor： Zhenhua LI ,  Haizu JIN ,  Xing LI

IPC: H01M10/637 ,  H01M4/36 ,  H01M4/62 ,  H01M10/0525 ,  H01G11/28 ,  H01G11/48 ,  H01G11/32 ,  H01G11/46

Abstract: This application relates to an electrode plate, an electrochemical device and a safety coating. The electrode plate comprises a current collector, an electrode active material layer and a safety coating disposed between the current collector and the electrode active material layer. The safety coating layer comprises fluorinated polyolefin and/or chlorinated polyolefin polymer matrix, a conductive material and an inorganic filler. The electrode plate can quickly cut off the circuit when the electrochemical device (for example, a capacitor, a primary battery, or a secondary battery) is in a high temperature condition or an internal short circuit occurs, and thus it may improve the high temperature safety performance of the electrochemical device.

公开(公告)号：US20240363980A1

公开(公告)日：2024-10-31

申请号：US18764987

申请日：2024-07-05

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Hu XU ,  Xing LI ,  Jiao DONG ,  Shaojun NIU

IPC: H01M50/536 ,  H01M10/04 ,  H01M50/103 ,  H01M50/538

CPC classification number: H01M50/536 ,  H01M10/0431 ,  H01M50/103 ,  H01M50/538

Abstract: A battery cell includes: a housing; at least one wound cell arranged in the housing, where each wound cell has a tab, and the tab at at least one end forms a flattened plane covering an end surface of the wound cell; a pole; and an adapting member connecting the pole to the tab of the at least one wound cell. In the battery cell, the tab at at least one end on the wound cell forms the flattened plane covering the end surface of the wound cell, which can reduce the battery space occupied by the tab, and increase the winding space, thereby improving the energy density of the battery cell. The flattened plane can be stably connected to the adapting member, overcoming the need to align a plurality of tabs for a stable connection to the adapting plate. This improves production line efficiency and reduces battery production costs.

公开(公告)号：US20240222812A1

公开(公告)日：2024-07-04

申请号：US18610284

申请日：2024-03-20

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Hu XU ,  Siying HUANG ,  Jiao DONG ,  Xing LI ,  Shaojun NIU

IPC: H01M50/533 ,  H01M10/0587

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

Abstract: An electrode assembly is formed by winding an electrode plate and a separator, and the electrode plate includes a coating region and a plurality of tabs. When the electrode assembly is unfolded, the tabs each include a first part and a second part, and the second part is located on a side of the tab that is away from the coating region. Along a length direction of the electrode plate, two sides of the first part respectively have a first side cut and a second side cut that are opposite to each other, and two sides of the second part respectively have a third side cut and a fourth side cut that are opposite to each other. The first side cut and the third side cut are disposed located on a same side and connected to each other.