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：US20240313225A1

公开(公告)日：2024-09-19

申请号：US18670605

申请日：2024-05-21

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Haiyang KANG ,  Yi ZHENG ,  Chengdong SUN ,  Yang YU ,  Chuying OUYANG

IPC: H01M4/62

CPC classification number: H01M4/622

Abstract: This application discloses a binder, a separator, an electrode plate, an electrode assembly, a battery cell, a battery, and an electric apparatus, and relates to the field of battery technologies. The binder includes an organic polymer and an inorganic substance, and the binder has a first glass transition temperature and a second glass transition temperature within a range of −10° C. to 95° C., where the first glass transition temperature is higher than the second glass transition temperature. The organic polymer and the inorganic substance act together to obtain the binder with good adhesion performance and appropriate glass transition temperatures, suitable for fully exerting the adhesion performance of the binder under battery operation conditions, and thereby improving the kinetic and safety performance of batteries.

公开(公告)号：US20240097276A1

公开(公告)日：2024-03-21

申请号：US18498850

申请日：2023-10-31

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Lei LI ,  Haiyang KANG ,  Yi ZHENG ,  Chengdong SUN ,  Shaohua AI

IPC: H01M50/446 ,  H01M10/0525 ,  H01M50/434 ,  H01M50/443

CPC classification number: H01M50/446 ,  H01M10/0525 ,  H01M50/434 ,  H01M50/443 ,  H01M2220/20

Abstract: This application relates to the field of lithium battery technologies, and in particular, to a binder, a separator, and a lithium-ion battery using such separator, where the binder includes a terpolymer formed by copolymerization of a first monomer unit, a second monomer unit, and a third monomer unit that are specified.

公开(公告)号：US20240120615A1

公开(公告)日：2024-04-11

申请号：US18502978

申请日：2023-11-06

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Haiyang KANG ,  Lei LI ,  Yi ZHENG ,  Chengdong SUN ,  Shaohua AI

IPC: H01M50/446 ,  C08F220/14 ,  C08F220/18 ,  C08F220/28 ,  C08K9/06 ,  H01M50/42 ,  H01M50/423 ,  H01M50/434 ,  H01M50/443 ,  H01M50/451

CPC classification number: H01M50/446 ,  C08F220/14 ,  C08F220/1802 ,  C08F220/1804 ,  C08F220/1806 ,  C08F220/1811 ,  C08F220/281 ,  C08K9/06 ,  H01M50/42 ,  H01M50/423 ,  H01M50/434 ,  H01M50/443 ,  H01M50/451 ,  C08F2800/10

Abstract: A binder includes a polymer and ceramic particles modified with silane coupling agent. The polymer contains structural units derived from a first-type monomer, a second-type monomer, and a third-type monomer, and a molar ratio of the first-type monomer, the second-type monomer, and the third-type monomer is (50 to 58):(40 to 44):(2 to 6). The first-type monomer is selected from one or more compounds of formula I, the second-type monomer is selected from one or more compounds of formula II, and the third-type monomer is selected from one or more compounds of formula III.

公开(公告)号：US20230207815A1

公开(公告)日：2023-06-29

申请号：US18109277

申请日：2023-02-14

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Shaohua AI ,  Yi ZHENG ,  Chengdong SUN

IPC: H01M4/62 ,  H01M10/058 ,  H01M4/04

CPC classification number: H01M4/622 ,  H01M10/058 ,  H01M4/0404 ,  H01M2004/028

Abstract: This application provides an insulating slurry and a preparation method thereof, a positive electrode plate, a secondary battery, a battery module, a battery pack, and an electric apparatus. The insulating slurry may include a resin, an inorganic filler, and an organic solvent, where the resin is selected from polyfluorinated olefin resins prepared in a suspension polymerization method, and the inorganic filler is a two-dimensional inorganic material. In this application, both a coating velocity of the insulating slurry and safety performance of the secondary battery can be improved.

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：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.

公开(公告)号：US20240014531A1

公开(公告)日：2024-01-11

申请号：US18348869

申请日：2023-07-07

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Shaohua AI ,  Chengdong SUN ,  Yi ZHENG

IPC: H01M50/586 ,  H01M4/62 ,  H01M4/13 ,  H01M10/42 ,  H01M50/59 ,  C09D133/10 ,  C09D115/00 ,  C09D133/20 ,  C09D133/26 ,  C09D7/20 ,  C09D7/61

CPC classification number: H01M50/586 ,  H01M4/62 ,  H01M4/13 ,  H01M10/4235 ,  H01M50/59 ,  C09D133/10 ,  C09D115/005 ,  C09D133/20 ,  C09D133/26 ,  C09D7/20 ,  C09D7/61 ,  H01M2004/028

Abstract: A fluorine-free insulating slurry includes a first resin selected from resins with a glass transition temperature of above 80° C. and a liquid absorbency in a standard electrolyte solution below 15%, a second resin selected from resins with a glass transition temperature below −5° C., an inorganic filler, and an organic solvent.