公开(公告)号：US20210305660A1

公开(公告)日：2021-09-30

申请号：US17202732

申请日：2021-03-16

Applicant: Ningde Amperex Technology Limited

Inventor： Xiaohe Fan ,  ZengBin Wei

IPC: H01M50/451 ,  H01M10/0525

Abstract: A separator includes a porous substrate and a hybrid coating layer disposed on a surface of the porous substrate. The hybrid coating layer includes a plurality of polymer particles and a binder. Each polymer particle includes a shell and a cavity defined in the shell. The polymer particle can swell and damage when comes in contact with an electrolyte.

公开(公告)号：US12002989B2

公开(公告)日：2024-06-04

申请号：US17202732

申请日：2021-03-16

Applicant: Ningde Amperex Technology Limited

Inventor： Xiaohe Fan ,  ZengBin Wei

IPC: H01M50/451 ,  H01M10/0525

CPC classification number: H01M50/451 ,  H01M10/0525

Abstract: A separator includes a porous substrate and a hybrid coating layer disposed on a surface of the porous substrate. The hybrid coating layer includes a plurality of polymer particles and a binder. Each polymer particle includes a shell and a cavity defined in the shell. The polymer particle can swell and damage when comes in contact with an electrolyte.

公开(公告)号：US20250125487A1

公开(公告)日：2025-04-17

申请号：US18911776

申请日：2024-10-10

Applicant: Ningde Amperex Technology Limited

Inventor： Xiaohe Fan ,  Zengbin Wei

IPC: H01M50/42 ,  H01M10/0525 ,  H01M10/0567 ,  H01M50/449 ,  H01M50/489

Abstract: An electrochemical apparatus includes an electrolyte, a positive electrode plate, a negative electrode plate, and a separator, where the separator is disposed between the positive electrode plate and the negative electrode plate; a width W of the electrochemical apparatus and a thickness T of the electrochemical apparatus satisfy: 80 mm≤W≤120 mm, and 2.3≤W/T≤4; and an adhesion force F between the separator and the positive electrode plate is 5 N/m to 15 N/m. With the adhesion force of the separator being regulated within the foregoing ranges, the separator has high adhesive performance. The application of the separator to a wide and thin electrochemical apparatus with a width and W/T value within the foregoing ranges can mitigate the deformation problem of the wide and thin electrochemical apparatus during cycling while taking the rate performance of the wide and thin electrochemical apparatus into account.

公开(公告)号：US20250118805A1

公开(公告)日：2025-04-10

申请号：US18911877

申请日：2024-10-10

Applicant: Ningde Amperex Technology Limited

Inventor： Xiaohe Fan ,  Zengbin Wei

IPC: H01M10/0567 ,  H01M10/0525 ,  H01M50/42 ,  H01M50/457 ,  H01M50/491

Abstract: An electrochemical apparatus includes an electrolyte, a positive electrode plate, a negative electrode plate, and a separator. The separator is disposed between the positive electrode plate and the negative electrode plate. The separator includes a substrate and a first coating provided on both surfaces of the substrate. The first coating includes polymer particles. In an 11.5 μm×7.5 μm region of a surface of the first coating, a quantity Q of the polymer particles is 10 to 90. The electrolyte includes substituted or unsubstituted C3-C8 linear carboxylate, and in a case of substitution, a substituent group is selected from halogen atoms. A mass percentage B of the linear carboxylate is 5% to 50% based on a mass of the electrolyte.

公开(公告)号：US20230344077A1

公开(公告)日：2023-10-26

申请号：US18129410

申请日：2023-03-31

Applicant: Ningde Amperex Technology Limited

Inventor： Bin Qiu ,  Xiaohe Fan ,  Zengbin Wei

IPC: H01M50/42 ,  C08F220/14 ,  C08F212/08 ,  C08F236/10 ,  C09C3/10 ,  H01M50/449 ,  H01M50/446

CPC classification number: H01M50/42 ,  C08F220/14 ,  C08F212/08 ,  C08F236/10 ,  C09C3/10 ,  H01M50/449 ,  H01M50/446 ,  C08F2800/20

Abstract: A polymer binder having softening point of 60° C. to 100° C. including a copolymer formed by polymerizing a first monomer, a second monomer, and a third monomer. The first monomer includes at least one of compounds shown in formula (I) or formula (II). The second monomer includes at least one of compounds shown in formula (III) or formula (IV). The third monomer includes at least one of compounds shown in formula (V):




R11 is selected from an alkyl group having 0 to 3 carbon atoms; n1 is an integer between 2 and 5; R21 is selected from hydrogen or an alkyl group having 1 to 5 carbon atoms, and M is hydrogen or an alkali metal cation; R22 is selected from hydrogen or an alkyl group having 1 to 5 carbon atoms; and R31 is selected from an alkyl group having 1 to 5 carbon atoms.