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：US20190319300A1

公开(公告)日：2019-10-17

申请号：US16000764

申请日：2018-06-05

Applicant: Ningde Amperex Technology Limited

Inventor： Jianjian Yi ,  Xinzhi Zhang ,  Zengbin Wei ,  Xinghua Tao

IPC: H01M10/0525 ,  H01M4/62 ,  H01M2/16 ,  H01M2/14 ,  H01M4/583 ,  H01M4/66

Abstract: The application provides a porous film and a lithium-ion battery. The porous film according to the present application has excellent adhesion, and the pore structure of the porous film can still be well maintained after being immersed in the electrolyte, thereby reducing the probability of pore blockage of the porous film and allowing the lithium-ion battery to have high ionic conductivity. Therefore, the rate performance of the lithium-ion battery is greatly improved, and the lithium-ion battery provided has excellent rate performance and cycle performance.

公开(公告)号：US20180362813A1

公开(公告)日：2018-12-20

申请号：US16115393

申请日：2018-08-28

Applicant: NINGDE AMPEREX TECHNOLOGY LIMITED

Inventor： Ze Zhong ,  Chengdong Sun ,  Huihui Liu ,  Xinghui Wang ,  Zengbin Wei

IPC: C09J127/16 ,  H01M10/0525 ,  H01M4/62 ,  C08F214/22

Abstract: A bonding agent includes: structural units represented by Formula I, Formula II, Formula III, and Formula IV: where each of R1, R2, R3, and R4 is independently selected from the group consisting of hydrogen, and C1-8 straight-chain or branched alkyl groups substituted or not substituted by a substituting group, each of R5, R6, and R7 is independently selected from the group consisting of hydrogen, and C1-6 straight-chain or branched alkyl groups substituted or not substituted by a substituting group, R8 is selected from C1-15 alkyl groups substituted or not substituted by a substituting group, each of R9, R10, and R11 is independently selected from the group consisting of hydrogen, and C1-6 straight-chain or branched alkyl groups substituted or not substituted by a substituting group.

公开(公告)号：US11575148B2

公开(公告)日：2023-02-07

申请号：US17061427

申请日：2020-10-01

Applicant: NINGDE AMPEREX TECHNOLOGY LIMITED

Inventor： Jianjian Yi ,  Xinzhi Zhang ,  Zengbin Wei ,  Xinghua Tao

IPC: H01M10/0525 ,  H01M4/62 ,  H01M4/583 ,  H01M4/66 ,  H01M50/403 ,  H01M50/409 ,  H01M4/02

Abstract: A porous film, including a binder and inorganic particles. The porous film includes pores formed by the binder. The pores at least include a part of the inorganic particles. The inorganic particles have particle sizes that Dv10 is in a range of 0.015 μm to 3 μm, Dv50 is in a range of 0.2 μm to 5 μm, and Dv90 is in a range of 1 μm to 10 μm. Dv10 of the inorganic particles is less than Dv50 of the inorganic particles, and Dv50 of the inorganic particles is less than Dv90 of the inorganic particles, and the inorganic particles have particle sizes that the ratio of Dv90 to Dv10 is in a range of 2 to 100.

公开(公告)号：US20210184315A1

公开(公告)日：2021-06-17

申请号：US17178843

申请日：2021-02-18

Applicant: Ningde Amperex Technology Limited

Inventor： Jianjian Yi ,  Xinzhi Zhang ,  Zengbin Wei ,  Xinghua Tao

IPC: H01M50/449 ,  H01M10/0525 ,  H01M50/403 ,  H01M50/411 ,  H01M50/446

Abstract: A separator includes a porous substrate, and a porous layer arranged on a surface of the porous substrate. The porous layer comprises inorganic particles and a binder, and a ratio of Dv90 of the inorganic particles to the thickness of the porous layer is in a range from 0.3 to 3.0. Excellent adhesion exists between the separator and the electrode according to the present application, which ensures that the energy storage device has good safety performance. Moreover, the rate performance and cycle performance of the energy storage device can be greatly improved due to the existence of inorganic particles in the separator.

公开(公告)号：US10858551B2

公开(公告)日：2020-12-08

申请号：US16115393

申请日：2018-08-28

Applicant: NINGDE AMPEREX TECHNOLOGY LIMITED

Inventor： Ze Zhong ,  Chengdong Sun ,  Huihui Liu ,  Xinghui Wang ,  Zengbin Wei

IPC: H01M4/13 ,  C09J127/16 ,  C08F214/22 ,  H01M10/0525 ,  H01M4/62

Abstract: A bonding agent includes: structural units represented by Formula I, Formula II, Formula III, and Formula IV: where each of R1, R2, R3, and R4 is independently selected from the group consisting of hydrogen, and C1-8 straight-chain or branched alkyl groups substituted or not substituted by a substituting group, each of R5, R6, and R7 is independently selected from the group consisting of hydrogen, and C1-6 straight-chain or branched alkyl groups substituted or not substituted by a substituting group, R8 is selected from C1-15 alkyl groups substituted or not substituted by a substituting group, each of R9, R10, and R11 is independently selected from the group consisting of hydrogen, and C1-6 straight-chain or branched alkyl groups substituted or not substituted by a substituting group.

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.

公开(公告)号：US10964987B2

公开(公告)日：2021-03-30

申请号：US16013887

申请日：2018-06-20

Applicant: Ningde Amperex Technology Limited

Inventor： Jianjian Yi ,  Xinzhi Zhang ,  Zengbin Wei ,  Xinghua Tao

IPC: H01M2/16 ,  H01M2/14 ,  H01M50/449 ,  H01M10/0525 ,  H01M50/403 ,  H01M50/411 ,  H01M50/446

Abstract: The application provides a separator and an energy storage device. The separator comprises: a porous substrate; and a porous layer arranged on a surface of the porous substrate, wherein the porous layer comprises inorganic particles and a binder, and a ratio of Dv90 of the inorganic particles to the thickness of the porous layer is in a range from 0.3 to 3.0. Excellent adhesion exists between the separator and the electrode according to the present application, which ensures that the energy storage device has good safety performance. Moreover, the rate performance and cycle performance of the energy storage device can be greatly improved due to the existence of inorganic particles in the separator.

公开(公告)号：US10833355B2

公开(公告)日：2020-11-10

申请号：US16000764

申请日：2018-06-05

Applicant: Ningde Amperex Technology Limited

Inventor： Jianjian Yi ,  Xinzhi Zhang ,  Zengbin Wei ,  Xinghua Tao

IPC: H01M10/0525 ,  H01M4/62 ,  H01M2/16 ,  H01M4/583 ,  H01M4/66 ,  H01M2/14 ,  H01M4/02

Abstract: The application provides a porous film and a lithium-ion battery. The porous film according to the present application has excellent adhesion, and the pore structure of the porous film can still be well maintained after being immersed in the electrolyte, thereby reducing the probability of pore blockage of the porous film and allowing the lithium-ion battery to have high ionic conductivity. Therefore, the rate performance of the lithium-ion battery is greatly improved, and the lithium-ion battery provided has excellent rate performance and cycle performance.