公开(公告)号：US20230017049A1

公开(公告)日：2023-01-19

申请号：US17940913

申请日：2022-09-08

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Haiyi HONG ,  Jianrui YANG ,  Cong CHENG ,  Yuanyuan LAN ,  Na LIU ,  Haizu JIN

IPC: H01M50/446 ,  H01M50/449 ,  H01M10/0525 ,  H01M50/417 ,  H01M50/489 ,  H01M50/403

Abstract: The present application relates to a separator, comprising a substrate and a coating formed on at least one surface of the substrate; wherein the coating comprises inorganic particles and organic particles, the organic particles comprise first organic particles and second organic particles both embedded in the inorganic particles and forming protrusions on the surface of the coating, the first organic particles have a number-average particle size of ≥8 μm; the second organic particles have a number-average particle size of ≥2 μm, and at least part of the second organic particles comprise a core structure and a shell structure. The present application also relates to a secondary battery comprising the separator, a device comprising the secondary battery and a method for preparing the separator.

公开(公告)号：US20220352599A1

公开(公告)日：2022-11-03

申请号：US17864297

申请日：2022-07-13

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Yuanyuan LAN ,  Cong CHENG ,  Jianrui YANG ,  Haiyi HONG ,  Na LIU ,  Haizu JIN

IPC: H01M50/446 ,  H01M50/403

Abstract: This application relates to a separator, including: a substrate; and a coating layer provided on at least one surface of the substrate; where the coating layer includes inorganic particles and organic particles, the organic particles include first organic particles, the first organic particles are embedded into the inorganic particles and form bulges on a surface of the coating layer, and a number-based median particle size of the first organic particles is ≥12 μm. This application further relates to a method for preparing the separator, a secondary battery containing the separator, a battery module including the secondary battery, a battery pack, and an apparatus.

公开(公告)号：US20240274978A1

公开(公告)日：2024-08-15

申请号：US18631365

申请日：2024-04-10

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Haiyi HONG ,  Xiaonan CHENG ,  Yanyun MA ,  Jianrui YANG ,  Peng WANG ,  Lei CHAO ,  Yi ZHENG ,  Chengdong SUN

IPC: H01M50/446 ,  H01M50/42 ,  H01M50/431 ,  H01M50/443

CPC classification number: H01M50/446 ,  H01M50/42 ,  H01M50/431 ,  H01M50/443

Abstract: This application discloses a separator and a preparation method thereof, a battery, and an electric apparatus. The separator includes a substrate and a coating, where the coating is formed on at least a portion of surface of the substrate, and the coating includes composite particles and a binder. The composite particles form bulges on surface of the coating, and the composite particles include polyacrylate particles and inorganic particles. The inorganic particle is present between at least two of the polyacrylate particles. Crosslinking degree a of the composite particles and mass swelling degree b thereof in an electrolyte satisfy a/b≥1 and a≥75%.

公开(公告)号：US20230024649A1

公开(公告)日：2023-01-26

申请号：US17950978

申请日：2022-09-22

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Haiyi HONG ,  Cong CHENG ,  Yuanyuan LAN ,  Jianrui YANG ,  Na LIU ,  Haizu JIN

IPC: H01M50/446 ,  H01M50/457 ,  H01M50/434 ,  H01M50/417 ,  H01M50/426 ,  H01M50/42 ,  H01M50/443 ,  H01M50/403 ,  H01M50/494

Abstract: The present application relates to a separator, comprising a substrate and a coating formed on at least one surface of the substrate; wherein the coating comprises inorganic particles and organic particles, the organic particles comprise first organic particles and second organic particles; the first organic particles and the second organic particles are embedded in the inorganic particles and form protrusions on the surface of the coating; the first organic particles have a number-average particle size of >10 μm, and the second organic particles have a number-average particle size of 2 μm-10 μm. The present application also relates to a secondary battery comprising the separator, a device comprising the secondary battery and a method for preparing the separator.

公开(公告)号：US20240250315A1

公开(公告)日：2024-07-25

申请号：US18626973

申请日：2024-04-04

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Xiaonan CHENG ,  Haiyi HONG ,  Lei LI ,  Jianrui YANG ,  Haiyang KANG ,  Yi ZHENG ,  Chengdong SUN

IPC: H01M10/42 ,  C08F220/14 ,  H01M4/62 ,  H01M50/42

CPC classification number: H01M10/4235 ,  C08F220/14 ,  H01M4/622 ,  H01M50/42

Abstract: A binder includes a polyacrylate copolymer and a lithium-containing compound. A preparation method of a binder includes adding monomers of a polyacrylate copolymer to a first emulsifier solution to obtain a pre-emulsion, adding an initiator to the pre-emulsion for reaction to obtain a reaction solution, and adding a lithium-containing substance to the reaction solution to adjust pH value to 7 to 8 and performing filtering to obtain the binder.

公开(公告)号：US20240079725A1

公开(公告)日：2024-03-07

申请号：US18387076

申请日：2023-11-06

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Haiyi HONG ,  Jianrui YANG

IPC: H01M50/446 ,  H01M50/42 ,  H01M50/423 ,  H01M50/426 ,  H01M50/434 ,  H01M50/449

CPC classification number: H01M50/446 ,  H01M50/42 ,  H01M50/423 ,  H01M50/426 ,  H01M50/434 ,  H01M50/449

Abstract: The present application provides a separator, which may include a substrate and a coating provided on at least one surface of the substrate, the coating including inorganic particles, first and second organic particles, organic-inorganic hybrid composite compound particles, and a first binder; where the first organic particles and the second organic particles may be embedded in the inorganic particles and the organic-inorganic hybrid composite compound particles and form bulges on a surface of the coating; the first organic particles and the second organic particles each may be independently one or more polymers containing one or more groups selected from: halogen, a phenyl group, an epoxy group, a cyano group, an ester group, an amide group, a hydroxyl group, a carboxyl group, a sulfonyl ester group, and a pyrrolidone group; and the first binder may include one or more linear copolymers containing a hydroxyl group and a carboxylate moiety.

公开(公告)号：US20230307786A1

公开(公告)日：2023-09-28

申请号：US18327269

申请日：2023-06-01

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Haiyi HONG ,  Jianrui YANG

IPC: H01M50/42 ,  H01M50/417 ,  H01M50/491 ,  H01M50/403 ,  H01M50/426 ,  H01M50/449

CPC classification number: H01M50/42 ,  H01M50/417 ,  H01M50/491 ,  H01M50/403 ,  H01M50/426 ,  H01M50/449

Abstract: A separator, a method for preparing the separator, a secondary battery (5) containing the separator, and an electrical device are described. The separator includes: a porous separator substrate; and a pressure-sensitive coating applied onto at least one surface of the separator substrate. The pressure-sensitive coating includes a first organic particle at a mass percent of 40 wt % to 90 wt %, a pressure-sensitive binder polymer at a mass percent of 10 wt % to 20 wt %, and optionally a second organic particle at a mass percent of 0 wt % to 50 wt %. The separator is of high ion-conductivity and high bonding performance at a normal temperature. The separator does not exert a bonding action under a pressure less than or equal to 1 MPa, but exerts a substantial bonding action under a pressure greater than or equal to 2 MPa, thereby significantly improving structural stability and ionic conductance of the electrochemical device.

公开(公告)号：US20240222791A1

公开(公告)日：2024-07-04

申请号：US18437255

申请日：2024-02-09

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Lei LI ,  Haiyi HONG ,  Xiaonan CHENG ,  Jianrui YANG ,  Haiyang KANG ,  Yi ZHENG ,  Chengdong SUN

IPC: H01M50/449 ,  H01M50/42 ,  H01M50/426 ,  H01M50/489

CPC classification number: H01M50/449 ,  H01M50/42 ,  H01M50/426 ,  H01M50/489

Abstract: This application relates to the field of battery technologies, and in particular, to a binder and a preparation method thereof, and a separator, electrode assembly, battery cell, battery, and electric apparatus containing such binder. The binder includes a core layer structure and a shell layer structure provided on a surface of the core layer structure, where the core layer structure includes a polyacrylate polymer, and the shell layer structure includes a polyvinylidene fluoride polymer.

公开(公告)号：US20240218169A1

公开(公告)日：2024-07-04

申请号：US18610259

申请日：2024-03-20

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Lei LI ,  Haiyi HONG ,  Xiaonan CHENG ,  Jianrui YANG ,  Peng WANG ,  Yi ZHENG ,  Chengdong SUN

IPC: C08L33/12 ,  H01M50/426

CPC classification number: C08L33/12 ,  H01M50/426 ,  C08L2207/53

Abstract: A binder includes a core layer structure and a shell layer structure provided on a surface of the core layer structure and fully enveloping the core layer structure. The core layer structure includes a polyacrylate polymer, and the shell layer structure includes a polyvinylidene fluoride polymer.

公开(公告)号：US20240162566A1

公开(公告)日：2024-05-16

申请号：US18419353

申请日：2024-01-22

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Haiyi HONG ,  Yanyun MA ,  Xiaonan CHENG ,  Lei CHAO ,  Peng WANG ,  Chongwang HAN ,  Yuxia LI ,  Jianrui YANG ,  Yi ZHENG ,  Chengdong SUN

IPC: H01M50/446 ,  H01M50/42 ,  H01M50/494

CPC classification number: H01M50/446 ,  H01M50/42 ,  H01M50/494

Abstract: A separator includes a substrate and a coating. The coating is formed on at least a portion of surface of the substrate. The coating includes composite particles and a binder. The composite particles form bulges on surface of the coating. The composite particles include polyacrylate particles and first inorganic particles. The first inorganic particle is present between at least two of the polyacrylate particles.