公开(公告)号：US20240372217A1

公开(公告)日：2024-11-07

申请号：US18773639

申请日：2024-07-16

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Feng LIU ,  Yulei FAN ,  Yiheng WANG ,  Wei ZHONG ,  Xiaoming GE

IPC: H01M50/451 ,  H01M50/417 ,  H01M50/429 ,  H01M50/434 ,  H01M50/443 ,  H01M50/446 ,  H01M50/457 ,  H01M50/489

Abstract: The present application provides a separator, including first base films sequentially arranged in a stacked manner, a coating containing ceramic particles, graphene oxide and a binder, and a second base film. The separator in the present application has good electrolyte solution wettability, may effectively inhibit the growth of lithium dendrites, and has a small resistance, which may effectively improve the safety, dynamic and cycling performance of a corresponding battery. The present application further provides a secondary battery, battery module, battery pack and electrical apparatus using the separator.

公开(公告)号：US20230082055A1

公开(公告)日：2023-03-16

申请号：US17900908

申请日：2022-09-01

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Yukun WU ,  Xiaoming GE

IPC: H01M4/66 ,  C25D3/38

Abstract: This application provides a metal foil. The metal foil may include a first metal layer and a metal base layer that are stacked up. A roughness Rz of a surface that is of the metal base layer and that is oriented toward the first metal layer is α1 μm, a roughness Rz of a surface that is of the first metal layer and that is oriented back from the metal base layer is β1 μm, α1 may be in a range of 1.8 to 2.9, and β1 may be in a range of 1 to 1.4.

公开(公告)号：US20240363968A1

公开(公告)日：2024-10-31

申请号：US18768850

申请日：2024-07-10

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Feng LIU ,  Yulei FAN ,  Yiheng WANG ,  Xiaoming GE

IPC: H01M50/451 ,  C08K3/22 ,  C08K3/36 ,  C08K9/04 ,  C09D179/04 ,  H01M50/403 ,  H01M50/417 ,  H01M50/431 ,  H01M50/443 ,  H01M50/446 ,  H01M50/457 ,  H01M50/491

CPC classification number: H01M50/451 ,  C09D179/04 ,  H01M50/403 ,  H01M50/417 ,  H01M50/431 ,  H01M50/443 ,  H01M50/446 ,  H01M50/457 ,  H01M50/491 ,  C08K2003/2231 ,  C08K2003/2241 ,  C08K2003/2248 ,  C08K2003/2272 ,  C08K3/36 ,  C08K9/04 ,  C08K2201/005 ,  H01M2220/20

Abstract: A separator includes a first porous base film; a second porous base film; and a supporting layer arranged between the first porous base film and the second porous base film, wherein the supporting layer comprises a polydopamine material and inorganic particles dispersed in the polydopamine material, and has an elastic modulus ≥5 Gpa.

公开(公告)号：US20230402689A1

公开(公告)日：2023-12-14

申请号：US18334532

申请日：2023-06-14

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Binjie TANG ,  Yongqiang ZHANG ,  Xiaoming GE ,  Wenzhu XU

IPC: H01M50/148 ,  H01M50/169 ,  H01M50/193 ,  H01M50/474 ,  H01M10/04

CPC classification number: H01M50/148 ,  H01M50/169 ,  H01M50/193 ,  H01M50/474 ,  H01M10/0404

Abstract: A battery cell includes a case having an opening and an end cover configured to cover the opening. The end cover comprises an end cover body and a support body. The end cover body is configured to be welded and fixed to the case. The support body is disposed on a bottom surface of the end cover body and is disposed along an edge of the end cover body in a circumferential direction. The support body is configured to abut against an inner side surface of the case.

公开(公告)号：US20230343958A1

公开(公告)日：2023-10-26

申请号：US18198844

申请日：2023-05-18

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Xihui WANG ,  Wenzhu XU ,  Xiaoming GE

IPC: H01M10/0562 ,  H01M4/38 ,  H01M4/04 ,  H01M4/583 ,  H01M4/485 ,  H01M10/0525

CPC classification number: H01M4/583 ,  H01M4/0416 ,  H01M4/386 ,  H01M4/387 ,  H01M4/485 ,  H01M10/0525 ,  H01M10/0562 ,  H01M2004/027 ,  H01M2220/20

Abstract: A negative electrode plate may comprise a negative electrode current collector and a negative electrode film layer provided on at least one surface of the negative electrode current collector; the negative electrode film layer may comprise a first region and a second region along the width direction, the first region may not comprise a solid electrolyte, while the second region may comprise a solid electrolyte.

公开(公告)号：US20220311104A1

公开(公告)日：2022-09-29

申请号：US17842015

申请日：2022-06-16

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Binjie TANG ,  Yongqiang ZHANG ,  Xiaoming GE

IPC: H01M50/531 ,  H01M50/103 ,  H01M50/209

Abstract: The embodiments of the application provide an electrode assembly and a manufacturing method and manufacturing system therefor, a battery cell and a battery. The electrode assembly includes a positive pole piece and a negative pole piece, a positive active material layer of the positive pole piece and a negative active material layer of the negative pole piece are arranged oppositely, and an end of the negative active material layer extends beyond the positive active material layer. The negative active material layer includes a negative body portion and a negative edge portion, one end of the negative edge portion extends beyond the positive active material layer, and/or the positive active material layer includes a positive body portion and a positive edge portion. The electrode assembly of this structure can reduce a risk of lithium plating of the pole piece.

公开(公告)号：US20240234789A1

公开(公告)日：2024-07-11

申请号：US18612823

申请日：2024-03-21

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Yujie CHEN ,  Feng LIU ,  Xiaoming GE

IPC: H01M10/04 ,  H01M4/04 ,  H01M4/70 ,  H01M50/103 ,  H01M50/15 ,  H01M50/209

CPC classification number: H01M10/0431 ,  H01M4/0435 ,  H01M4/70 ,  H01M50/103 ,  H01M50/15 ,  H01M50/209

Abstract: An electrode assembly includes a positive electrode layer, a negative electrode layer, and an separator. The positive electrode layer, negative electrode layer, and separator are wound to form the electrode assembly. The separator wraps on both sides of each positive electrode layer and each negative electrode layer. A current collector of the negative electrode layer is made of a three-dimensional porous metal material. The negative electrode layer includes a first negative electrode section and a second negative electrode section extending along a winding direction and connected to each other. A winding start end of the second negative electrode section is substantially aligned with a winding termination end of the positive electrode layer. A thickness d2 of the second negative electrode section is less than a thickness d1 of the first negative electrode section.

公开(公告)号：US20240097143A1

公开(公告)日：2024-03-21

申请号：US18511585

申请日：2023-11-16

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Yulei FAN ,  Yiheng WANG ,  Xiaoming GE ,  Manman WANG ,  Yujie CHEN ,  Xiaoping ZHANG

IPC: H01M4/78

CPC classification number: H01M4/78

Abstract: A battery unit includes an electrode assembly and a support component. The electrode assembly includes a positive electrode plate and a negative electrode plate that have opposite polarities, and a separator separating the positive electrode plate and the negative electrode plate. The electrode assembly is wound around an outer periphery of the support component. An outer peripheral wall surface of the support component includes a first arc surface and a second arc surface. A first end of the first arc surface is connected to a first end of the second arc surface, and a second end of the first arc surface is spaced apart from a second end of the second arc surface so as to form a step region on the outer peripheral wall surface. The step region is configured to accommodate at least part of the electrode assembly.

公开(公告)号：US20230335837A1

公开(公告)日：2023-10-19

申请号：US18338200

申请日：2023-06-20

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Xin CHEN ,  Xiaoming GE

IPC: H01M50/15 ,  H01M50/103

CPC classification number: H01M50/15 ,  H01M50/103

Abstract: Described are a battery cell, a battery and a device using a battery cell as a power source, wherein the battery cell comprises a case and an end cap, wherein the case is provided with an opening, the end cap is used for covering the opening and is in sealed connection with the case, one of the case or the end cap is provided with a notch, the other is provided with a protrusion, the protrusion is provided within the notch and matches the shape of the notch, and the end cap is fitted on the case by mating the protrusion with the notch. The end cap of the battery cell of the present application is fitted on the case by mating the protrusion with the notch, which can effectively reduce the metal scrapings generated by scratching between the end cap and the case from falling into the case.

公开(公告)号：US20220238971A1

公开(公告)日：2022-07-28

申请号：US17539696

申请日：2021-12-01

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Xin CHEN ,  Xiaoming GE ,  Ruoyan MA ,  Yiheng WANG

IPC: H01M50/591 ,  H01M50/103 ,  H01M50/588 ,  H01M50/202 ,  H01M50/249

Abstract: Embodiments of the present application provide an insulating film and related devices. The insulating film is configured to wrap a battery assembly, the insulating film includes a bottom coverage area, N side coverage areas and N pairs of bonding areas; the bottom coverage area has N sides, the N side coverage areas are respectively connected to the bottom coverage area outside the N sides, and can be respectively bend toward the bottom coverage area along the N sides; each pair of the N pairs of bonding areas is located between two adjacent side coverage areas, and is connected to the two adjacent side coverage areas respectively; each pair of bonding areas is configured to make the bottom coverage area and the N sides coverage areas form a space wrapping the battery assembly by bonding surfaces on the same side of each pair of bonding areas.