公开(公告)号：US20220367871A1

公开(公告)日：2022-11-17

申请号：US17874548

申请日：2022-07-27

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Xingbu CHEN ,  Xin SUN ,  Xiao CHEN ,  Zhenglun CHEN ,  Haotian XIE ,  Bangrun WANG ,  Geng LI

IPC: H01M4/525 ,  H01M10/0525 ,  H01M4/505 ,  H01M4/587 ,  H01M10/0567 ,  H01M4/58

Abstract: A secondary battery includes a positive electrode, a negative electrode, and an electrolyte. The positive electrode includes a positive-electrode active substance layer, the positive-electrode active substance layer contains a pre-lithiation agent, and a molecular formula of the pre-lithiation agent is LixNiaCu1−a−bMbO2, where 1≤x≤2, 0

公开(公告)号：US20230395778A1

公开(公告)日：2023-12-07

申请号：US18234891

申请日：2023-08-17

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Xin SUN ,  Haotian XIE ,  Xiao CHEN ,  Donghao WANG ,  Erdong JING

IPC: H01M4/134 ,  H01M10/0525 ,  H01M4/131 ,  H01M4/66

CPC classification number: H01M4/134 ,  H01M10/0525 ,  H01M4/131 ,  H01M4/661 ,  H01M2004/028

Abstract: This application provides a positive electrode plate for lithium-ion battery and a lithium-ion battery containing the same. The positive electrode plate may include a current collector, and a capacity layer and a power layer that are specially designed, able to effectively eliminate, in an economical and simple manner, the adverse impact on the battery performance caused by a product resulting from a pre-lithiation material releasing lithium during charge-discharge cycles, thereby significantly improving the first-cycle coulombic efficiency, cycling performance, and service life of batteries.

公开(公告)号：US20240162525A1

公开(公告)日：2024-05-16

申请号：US18422038

申请日：2024-01-25

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Jiantao HUANG ,  Xin SUN ,  Huanji LIU ,  Xiao CHEN ,  Haizu JIN

IPC: H01M10/654 ,  H01M50/209 ,  H01M50/48 ,  H01M50/494

CPC classification number: H01M10/654 ,  H01M50/209 ,  H01M50/48 ,  H01M50/494 ,  H01M2220/20

Abstract: An electrode assembly, a secondary battery, a battery pack, and an electrical apparatus. In the electrode assembly, there are several electrode plate portions sequentially arranged in a laminated manner along its own thickness direction. During structural design, the current collector in at least one of the electrode plate portions is configured as a barrier, and by controlling the ratio between the thermal conductivity λ0 of the barrier and the thickness d0 of the barrier to be less than 3×107 W/(K*m2), the heat flux density of the barrier along the thickness direction of the electrode assembly is reduced and the thermal resistance is increased, thus forming an effective thermal barrier in the thickness direction of the electrode assembly.

公开(公告)号：US20230261491A1

公开(公告)日：2023-08-17

申请号：US18295931

申请日：2023-04-05

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Haotian XIE ,  Xingbu CHEN ,  Xin SUN ,  Bangrun Wang ,  Xiao CHEN ,  Na LIU ,  Chengdu LIANG

IPC: H02J7/00 ,  H01M10/44 ,  H01M10/0525 ,  H01M4/62 ,  C01G53/00

CPC classification number: H02J7/0069 ,  H01M10/446 ,  H01M10/0525 ,  H01M4/628 ,  C01G53/42 ,  H02J7/005

Abstract: A method for recovering activity of a battery includes obtaining a battery state-of-health value of the battery during a charging process, applying an activation voltage to the battery in response to the battery state-of-health value being less than or equal to a first preset threshold such that lithium ions at a lithium supplement agent of the battery are released to an electrolyte solution, and stopping application of the activation voltage and continuing a normal charge-discharge cycle in response to the battery state-of-health value increasing to be greater than or equal to a second preset threshold. The activation voltage is higher than a normal charging voltage of the battery.

公开(公告)号：US20230131176A1

公开(公告)日：2023-04-27

申请号：US17043149

申请日：2020-04-11

Applicant: Contemporary Amperex Technology Co., Limited

Inventor： Mianyu XIE ,  Min ZHANG ,  Lei CHEN ,  Xiao CHEN

IPC: H01M10/0525 ,  H01M50/178 ,  H01M50/184

Abstract: Provided is a secondary battery, including: an electrode assembly, a packing bag, an electrode lead and an insulation part; the electrode assembly is housed in the packing bag having a sealing part on edge, and the electrode lead is connected to the electrode assembly and passes through the sealing part. The sealing part includes a main body area, a first step area and a first transition area which are located on same side of the electrode lead along width direction, and the main body area, first transition area and first step area are successively arranged along direction approaching the electrode lead; the insulation part is wrapped around the electrode lead, and has a first portion which is located on a side of the electrode lead close to the main body area along width direction and covered by the first step area on both sides in thickness direction.

公开(公告)号：US20240363844A1

公开(公告)日：2024-10-31

申请号：US18771103

申请日：2024-07-12

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Nannan ZHANG ,  Xin SUN ,  Xiao CHEN ,  Haotian XIE ,  Donghao WANG ,  Erdong JING

IPC: H01M4/36 ,  H01M4/02 ,  H01M4/131 ,  H01M4/485

CPC classification number: H01M4/366 ,  H01M4/131 ,  H01M4/485 ,  H01M2004/021 ,  H01M2004/028

Abstract: A positive electrode pre-lithiation reagent, which includes an inner core and a coating layer is described. The inner core includes a lithium-rich metal oxide; the coating layer covers the surface of the inner core and includes a conductive polymer and a low surface energy material. The surface energy of the low surface energy material is 10 mJ/m2 to 35 mJ/m2, optionally 10 mJ/m2 to 22 mJ/m2.

公开(公告)号：US20240120497A1

公开(公告)日：2024-04-11

申请号：US18386606

申请日：2023-11-03

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Xin SUN ,  Huanji LIU ,  Xiao CHEN ,  Ziyi YIN ,  Haizu JIN

IPC: H01M4/66 ,  H01M4/04 ,  H01M10/04 ,  H01M50/103 ,  H01M50/209 ,  H01M50/249

CPC classification number: H01M4/662 ,  H01M4/0404 ,  H01M10/0413 ,  H01M50/103 ,  H01M50/209 ,  H01M50/249 ,  H01M2004/021

Abstract: The present application relates to a current collector, an electrode plate, a battery cell, a battery, and an electric device. The current collector includes a stainless steel current-collecting portion for collecting a current, where the stainless steel current-collecting portion includes a blank area and a coating area that are arranged adjacent to each other in a preset direction, the coating area is configured to be coated with an active material, and the blank area has a hardness less than that of the coating area.

公开(公告)号：US20210126325A1

公开(公告)日：2021-04-29

申请号：US17139714

申请日：2020-12-31

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Min ZHANG ,  Xiao CHEN ,  Shaojun NIU

IPC: H01M50/533 ,  H01M50/105 ,  H01M50/184 ,  H01M50/186

Abstract: The present application provides a secondary battery, an apparatus and a manufacturing method for a secondary battery, and the secondary battery includes an electrode assembly, a packaging bag and an electrode lead. The packaging bag has a main body portion and a sealing portion. The sealing portion includes a top sealing region and a side sealing region. The top sealing region includes a first top sealing region and a second top sealing region, the second top sealing region extends from the first top sealing region and is connected to the side sealing region. The side sealing region has a first crease line. The top sealing region has a second crease line. An extension line of the first crease line intersects an extension line of the second crease line, and an intersection point is located on one side of the second top sealing region away from the electrode assembly.