公开(公告)号：US20180287158A1

公开(公告)日：2018-10-04

申请号：US15917612

申请日：2018-03-10

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Yunjian MA ,  Wei LI ,  Haizu JIN ,  Yikuang JIN

IPC: H01M4/62

Abstract: Provided is a negative electrode plate. A negative electrode plate includes a negative current collector and a first coating layer arranged on a surface of the negative current collector. The negative electrode plate further includes a second coating layer arranged on a surface of the first coating layer. The first coating layer contains a negative electrode active material. The second coating layer contains a heat-resistant insulating material. The heat-resistant insulating material is selected from an oxide or a hydroxide containing at least one of elements selected from a group consisting of Mg, Si, Zr and Y. In the present application, the second coating layer containing the heat-resistant insulating material is coated on a surface of the conventional negative electrode active material layer, so an instantaneous high power discharge in a short circuit of the secondary battery can be avoided, and a safety performance of the battery can be improved.

公开(公告)号：US20170365880A1

公开(公告)日：2017-12-21

申请号：US15627845

申请日：2017-06-20

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Wujun ZOU ,  Xiaowen ZHANG ,  Haizu JIN ,  Jian DUAN ,  Weitao WANG ,  Xing LI

IPC: H01M10/0567 ,  H01M2/04 ,  H01M10/0525 ,  H01M10/44

CPC classification number: H01M10/0567 ,  H01M2/0486 ,  H01M2/16 ,  H01M4/13 ,  H01M10/052 ,  H01M10/0525 ,  H01M10/4235 ,  H01M10/443 ,  H01M10/445 ,  H01M2200/10 ,  H01M2200/20

Abstract: The secondary battery of the present application includes a cell, an electrolyte and a case, the cell includes electrodes and a separator. The secondary battery further includes a gas-generating additive and a water-generating additive. During the overcharging process of the Li-ion battery, when the battery reaches a certain temperature, the water-generating additive decomposes and generates a large amount of water. Then, Li salt and the gas-generating additive are induced to decompose and generate a large amount of gas, so that when the internal pressure of the battery reaches a certain value, the charging current is interrupted in advance by a device for interrupting charging current. Moreover, the water-generating additive can absorb the heat generated by the battery during decomposition, so that the internal temperature of the battery decreases, thereby preventing the overcharge failure of the battery.

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：US20240421371A1

公开(公告)日：2024-12-19

申请号：US18819846

申请日：2024-08-29

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Long CHEN ,  Denghua LIN ,  Xinxiang CHEN ,  Shoujun HUANG ,  Yulian ZHENG ,  Peng WANG ,  Haizu JIN

IPC: H01M10/48 ,  H01M50/249 ,  H01M50/538 ,  H01M50/567 ,  H01M50/578

Abstract: The present application discloses a battery cell, a battery, and an electricity consuming apparatus. The battery cell includes a shell and a first detection assembly. The first detection assembly is disposed on the shell, and the first detection assembly is configured to detect status information of the battery cell. In the technical solution of embodiments of the present application, the first detection assembly is disposed in the battery cell, which can obtain the operating status information of the battery cell, monitor the battery cell, and find abnormal conditions of the battery cell during operation in a timely manner, thereby improving the operational stability of the battery cell and the safety of the battery.

公开(公告)号：US20240380080A1

公开(公告)日：2024-11-14

申请号：US18784546

申请日：2024-07-25

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Hui GU ,  Chao LIU ,  Wenjie YU ,  Qingkui CHI ,  Haizu JIN

IPC: H01M50/536 ,  H01M50/107

Abstract: Embodiments of the present application provide a battery cell, a battery, an electrical device, and a method and device for manufacturing a battery cell. The battery cell includes a shell, an electrode assembly and a current collecting member. The shell has a wall portion located at one end of the shell in a first direction. The electrode assembly is accommodated in the shell and provided with a tab. The current collecting member is accommodated in the shell, and is configured to be connected to the wall portion and the tab to implement an electrical connection between the wall portion and the tab. A protrusion is provided on a side of the current collecting member facing the wall portion, and the wall portion is provided with a recess configured to accommodate at least a part of the protrusion to position the current collecting member.

公开(公告)号：US20240363984A1

公开(公告)日：2024-10-31

申请号：US18770770

申请日：2024-07-12

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Long CHEN ,  Xinxiang CHEN ,  Denghua LIN ,  Shoujun HUANG ,  Yulian ZHENG ,  Peng WANG ,  Haizu JIN

IPC: H01M50/586 ,  H01M10/04 ,  H01M50/103 ,  H01M50/59 ,  H01M50/70

CPC classification number: H01M50/586 ,  H01M10/0431 ,  H01M10/049 ,  H01M50/103 ,  H01M50/59 ,  H01M50/70 ,  H01M2220/20

Abstract: Some embodiments of this application provide a battery cell, a battery cell manufacturing method and equipment, a battery, and an electrical device. The battery cell includes: a housing, where an opening is created at each of two ends of the housing in a first direction; an end cap, configured to cover the opening at either end of the housing; a first electrode assembly and a second electrode assembly, accommodated in the housing, where the first electrode assembly and the second electrode assembly are arranged along the first direction and insulated from each other; and an insulation structure, at least partially disposed between the first electrode assembly and the second electrode assembly, and configured to electrically isolate the first electrode assembly from the second electrode assembly.

公开(公告)号：US20240356172A1

公开(公告)日：2024-10-24

申请号：US18761891

申请日：2024-07-02

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Hui GU ,  Dongsheng SUN ,  Haizu JIN

IPC: H01M50/533 ,  H01M50/152 ,  H01M50/342 ,  H01M50/559 ,  H01M50/566

CPC classification number: H01M50/533 ,  H01M50/152 ,  H01M50/3425 ,  H01M50/559 ,  H01M50/566 ,  H01M2200/20 ,  H01M2220/20

Abstract: A battery cell, a battery and a power consuming device are described. The battery cell includes a housing, an electrode assembly, an end cap, and a current collecting member. The housing has an opening. The electrode assembly is accommodated inside the housing. The end cap is connected to the housing and closes the opening. The current collecting member is located inside the housing, is arranged on a side of the electrode assembly facing the end cap, and is connected to the end cap and the electrode assembly. The end cap includes a connecting portion connected to the current collecting member, and in a thickness direction of the end cap, an accommodating groove is provided in a surface of the current collecting member facing the end cap, and the connecting portion is at least partially accommodated in the accommodating groove.

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：US20240297401A1

公开(公告)日：2024-09-05

申请号：US18665503

申请日：2024-05-15

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Huasheng SU ,  Chengyou Xing ,  Quankun LI ,  Weirong ZHUO ,  Peng WANG ,  Haizu JIN

IPC: H01M50/375 ,  H01M10/058 ,  H01M50/147 ,  H01M50/342 ,  H01M50/474

CPC classification number: H01M50/375 ,  H01M10/058 ,  H01M50/342 ,  H01M50/474 ,  H01M50/147 ,  H01M2200/10 ,  H01M2200/20

Abstract: A battery cell, a battery, and a method and a device for preparing the battery are provided. The battery cell includes: a housing, having an opening; an electrode assembly, accommodated in the housing; an end cap covering the opening and provided with a pressure relief mechanism; and an insulating member, disposed between the end cover and the electrode assembly to insulate and isolate the end cover from the electrode assembly. The insulating member includes a body and a boss, a first through hole being formed in the area of the body corresponding to the pressure relief mechanism, the boss being connected to the body and extending towards the electrode assembly, a second through hole being formed in a side surface of the boss. The first through hole and the second through hole are used for forming an exhaust channel from the interior of the battery cell to the pressure relief mechanism.