公开(公告)号：US20230395931A1

公开(公告)日：2023-12-07

申请号：US18228372

申请日：2023-07-31

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Haibo KE ,  Quankun LI ,  Peng WANG ,  Chengyou XING ,  Ningsheng WU ,  Kaihuan YANG ,  Xiang MEI ,  Lili WU

IPC: H01M50/342 ,  H01M50/15 ,  H01M50/159 ,  H01M50/186 ,  H01M50/588 ,  H01M50/59

CPC classification number: H01M50/3425 ,  H01M50/15 ,  H01M50/159 ,  H01M50/186 ,  H01M50/588 ,  H01M50/59 ,  H01M2200/20

Abstract: An end cover assembly includes an end cover and a pressure relief member. The pressure relief member is provided in the end cover, and the pressure relief member is provided with an indentation groove. The pressure relief member is configured to crack along the indentation groove to release internal pressure of a battery cell when internal pressure or temperature of the battery cell reaches a threshold. Hardness of the pressure relief member is lower than hardness of the end cover.

公开(公告)号：US20240194889A1

公开(公告)日：2024-06-13

申请号：US18411968

申请日：2024-01-12

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Peidong SONG ,  Xuan LI ,  Xin SUN ,  Lili WU ,  Xingbu CHEN ,  Liang YUN ,  Miaomiao DONG

IPC: H01M4/62 ,  H01M4/02 ,  H01M4/04 ,  H01M4/131 ,  H01M4/133 ,  H01M4/1391 ,  H01M4/1393 ,  H01M4/36 ,  H01M4/48 ,  H01M4/52 ,  H01M4/587

CPC classification number: H01M4/628 ,  H01M4/0404 ,  H01M4/131 ,  H01M4/133 ,  H01M4/1391 ,  H01M4/1393 ,  H01M4/366 ,  H01M4/48 ,  H01M4/52 ,  H01M4/587 ,  H01M2004/021 ,  H01M2004/027

Abstract: A negative electrode plate for a secondary battery and a preparation method therefor, and a secondary battery comprising the negative electrode plate, a battery module, a battery pack, and a power consuming device are described. The composite lithium metal negative electrode plate of the present application comprises a current collector and an active substance layer coated on at least one surface of the current collector, wherein the active substance layer comprises an active substance and a lithiophilic material having a core-shell structure, and the core of the lithiophilic material contains a lithiophilic substance and the shell thereof is a carbon material.

公开(公告)号：US20230369590A1

公开(公告)日：2023-11-16

申请号：US18348729

申请日：2023-07-07

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Lili WU ,  Peidong SONG ,  Xin SUN ,  Liang YUN ,  Xingbu CHEN ,  Miaomiao DONG ,  Xuan LI

IPC: H01M4/583 ,  H01M4/66 ,  H01M4/04

CPC classification number: H01M4/583 ,  H01M4/661 ,  H01M4/0404 ,  H01M2220/20 ,  H01M2004/021

Abstract: A secondary battery includes a negative electrode plate. A negative electrode active material layer of the negative electrode plate includes a porous carbon material. The negative electrode active material layer has a pore. The pore runs through or not through the negative electrode active material layer. Lithium metal is present in the pore.

公开(公告)号：US20230369562A1

公开(公告)日：2023-11-16

申请号：US18359082

申请日：2023-07-26

Applicant: Contemporary Amperex Technology CO., Limited

Inventor： Lili WU ,  Miaomiao Dong ,  Xin Sun ,  Xingbu Chen ,  Xuan Li ,  Liang Yun ,  Peidong Song

IPC: H01M4/133 ,  H01M4/1393 ,  H01M4/583 ,  H01M4/36 ,  H01M4/04

CPC classification number: H01M4/133 ,  H01M4/1393 ,  H01M4/583 ,  H01M4/366 ,  H01M4/0404 ,  H01M2004/021

Abstract: An electrode plate and a method for preparing the electrode plate, a secondary battery, a battery module, a battery pack, and an electric apparatus are described. The electrode plate includes a current collector and an active substance layer provided on at least one surface of the current collector. The active substance layer includes an active main material and a porous material. The active substance layer has pores, where the pore runs through or not through the active substance layer. Thickness of the active substance layer is x, and distance between two end openings of the pore in a direction perpendicular to the active substance layer is y, where x and y satisfy the following condition: 0.1≤x≤y≤x.

公开(公告)号：US20240250268A1

公开(公告)日：2024-07-25

申请号：US18625656

申请日：2024-04-03

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Xingbu CHEN ,  Lili WU ,  Xin SUN ,  Xuan Ll ,  Miaomiao DONG ,  Peidong SONG ,  Liang YUN

IPC: H01M4/62 ,  H01M4/02 ,  H01M4/13

CPC classification number: H01M4/628 ,  H01M4/13 ,  H01M2004/021 ,  H01M2004/027

Abstract: A negative electrode plate, an electrode assembly, a battery cell, a battery, and an electrical device are disclosed. The negative electrode plate includes: a negative current collector and a negative active material layer disposed on the negative current collector. A plurality of pore channels are disposed in the negative active material layer. The technical solution of this application reduces lithium plating on a surface of the negative electrode plate, and reduces the possibility of lithium dendrites growing and piercing the separator, thereby enhancing reliability of the battery.

公开(公告)号：US20240145794A1

公开(公告)日：2024-05-02

申请号：US18409803

申请日：2024-01-11

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Xingbu CHEN ,  Yonghuang YE ,  Xin SUN ,  Lili WU ,  Rundie LIU ,  Xuan LI ,  Miaomiao DONG ,  Liang YUN ,  Peidong SONG

IPC: H01M10/42

CPC classification number: H01M10/4242 ,  H01M2220/20

Abstract: Lithium replenishing spaces are disposed on a current collection structure, such that the lithium replenishing spaces communicate with an active layer on one side; and the battery is replenished with lithium by using lithium replenishing agents in the lithium replenishing spaces to offset an irreversible lithium consumption in a cycle process, so as to increase the total capacity and the energy density of the battery. According to the present application, due to average weights MA of corresponding active materials in different distribution regions on the active layer, a sum V0 of internal volumes of lithium replenishing spaces corresponding to each of the distribution regions is controlled in a positively correlated manner based on a change in the average weights of the active materials in the different distribution regions.

公开(公告)号：US20240014435A1

公开(公告)日：2024-01-11

申请号：US18466819

申请日：2023-09-13

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Xingbu CHEN ,  Xin SUN ,  Lili WU ,  Miaomiao DONG ,  Xuan LI ,  Liang YUN ,  Rundie LIU ,  Peidong SONG

IPC: H01M10/04 ,  H01M50/536 ,  H01M4/38 ,  H01M50/538 ,  H01M4/134 ,  H01M10/0525

CPC classification number: H01M10/0431 ,  H01M50/536 ,  H01M4/382 ,  H01M50/538 ,  H01M4/134 ,  H01M10/0525 ,  H01M2004/027

Abstract: A compound electrode sheet includes two single electrode sheets, and each single electrode sheet includes a current collector and an active material layer. The current collector is provided with a main body and a protrusion portion, and the protrusion portion is arranged protruding out of the main body in an extension direction of the current collector. The active material layer is arranged on a surface of the main body. The protrusion portions of the two current collectors of the two single electrode sheets are fixedly connected. The active material layers of the two single electrode sheets are arranged opposite to each other.

公开(公告)号：US20240097280A1

公开(公告)日：2024-03-21

申请号：US18522292

申请日：2023-11-29

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Xingbu CHEN ,  Lili WU ,  Xin SUN ,  Huisen SU ,  Jianren WEI ,  Xuan LI

IPC: H01M50/477 ,  H01M50/48 ,  H01M50/531

CPC classification number: H01M50/477 ,  H01M50/48 ,  H01M50/531 ,  H01M2220/20

Abstract: A battery cell may include an electrode assembly and a buffer pad, where the electrode assembly may include a main body portion and a tab extending from the main body portion, the main body portion may include a first main body region and a second main body region, and the thickness of the first main body region along a first direction (T) may be smaller than the thickness of the second main body region along the first direction (T); and where the buffer pad may include a compressible first side wall, the first side wall may include a first buffer portion and a second buffer portion, the thickness of the first buffer portion along the first direction (T) may be greater than the thickness of the second buffer portion along the first direction, and the buffer pad may be provided on a side face of the main body portion.

公开(公告)号：US20230124703A1

公开(公告)日：2023-04-20

申请号：US17903054

申请日：2022-09-06

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Jianren WEI ,  Xin SUN ,  Lili WU ,  Xuan LI ,  Huisen SU ,  Xingbu CHEN

IPC: H01M4/04 ,  H01M4/62 ,  H01M4/38

Abstract: Provided in the present application is a negative electrode plate, a secondary battery, a battery module, a battery pack and a power consuming device. The negative electrode plate may comprise a first coating, a second coating and a current collector, the current collector being on one side of the second coating, the first coating being on the other side of the second coating, the first coating and the second coating each comprising a silicon-based material, wherein a molar ratio of element O to element Si of the silicon-based material in the first coating may be 0.5 to 1.5, and a molar ratio of element O to element Si of the silicon-based material in the second coating may be less than or equal to 0.3.