公开(公告)号：US20250105300A1

公开(公告)日：2025-03-27

申请号：US18973563

申请日：2024-12-09

Applicant: Ningde Amperex Technology Limited

Inventor： Kefei WANG ,  Zhen DAI ,  Yingying WANG ,  Feng ZHOU

IPC: H01M4/62 ,  H01M4/02 ,  H01M4/587 ,  H01M10/0525 ,  H01M10/0569

Abstract: An electrochemical device, including a cathode, an anode and an electrolyte, wherein the anode includes an anode active material layer, wherein the contact angle of the anode active material layer relative to a non-aqueous solvent is not greater than 60° as measured by a contact angle measurement. The electrochemical device of the present application has improved cycle performance.

公开(公告)号：US20240387875A1

公开(公告)日：2024-11-21

申请号：US18785356

申请日：2024-07-26

Applicant: Ningde Amperex Technology Limited

Inventor： Kefei WANG

IPC: H01M10/0569 ,  H01M4/13 ,  H01M10/0525 ,  H01M10/0567 ,  H01M10/48

Abstract: An electrolyte includes a fluorinated cyclic carbonate, and a multi-nitrilemulti-nitrile compound having an ether bond. Based on a total weight of the electrolyte, a weight percentage (Cf) of the fluorinated cyclic carbonate is greater than a weight percentage (Cn) of the multi-nitrilemulti-nitrile compound having an ether bond, and about 3

公开(公告)号：US20240347786A1

公开(公告)日：2024-10-17

申请号：US18757902

申请日：2024-06-28

Applicant: Ningde Amperex Technology Limited

Inventor： Wenqiang CHENG ,  Kefei WANG

IPC: H01M10/42 ,  H01M4/02 ,  H01M4/131 ,  H01M4/62 ,  H01M10/0525 ,  H01M10/0567

CPC classification number: H01M10/4235 ,  H01M4/131 ,  H01M4/623 ,  H01M10/0525 ,  H01M10/0567 ,  H01M2004/028

Abstract: An electrochemical apparatus, including a positive electrode. The positive electrode includes a positive current collector and a positive electrode mixture layer formed on at least one surface of the positive current collector. The positive electrode mixture layer satisfies a relation: F1/F2≥5, where a cohesive force of the positive electrode mixture layer at an initial test temperature of 25° C. is F1 N/m, and a cohesive force of the positive electrode mixture layer treated at 130° C. and then cooled to 25° C. is F2 N/m. The above design not only sufficiently improves safety performance of the electrochemical apparatus at high pressure and high temperature, but also effectively reduces the voltage drop.

公开(公告)号：US20240291032A1

公开(公告)日：2024-08-29

申请号：US18626697

申请日：2024-04-04

Applicant: Ningde Amperex Technology Limited

Inventor： Kefei WANG ,  Qiao ZENG ,  Liangzhen XIAO ,  Fei WU

IPC: H01M10/0566 ,  H01M4/13 ,  H01M4/64 ,  H01M10/0525 ,  H01M10/0567 ,  H01M10/0569

CPC classification number: H01M10/0566 ,  H01M4/13 ,  H01M4/64 ,  H01M10/0525 ,  H01M10/0567 ,  H01M10/0569 ,  H01M2300/0025 ,  H01M2300/0034 ,  H01M2300/0037

Abstract: An electrolyte including a dinitrile compound, a trinitrile compound, and propyl propionate. Based on the total weight of the electrolyte, the weight percentage of the dinitrile compound is X, the weight percentage of the trinitrile compound is Y, and the weight percentage of the propyl propionate is Z, wherein, about 2 wt %≤(X+Y)≤ about 11 wt %, about 0.1≤ (X/Y)≤ about 4, about 30 wt %≤ Z≤ about 50 wt %, about 2 wt %

公开(公告)号：US20230102805A1

公开(公告)日：2023-03-30

申请号：US17990626

申请日：2022-11-18

Applicant: NINGDE AMPEREX TECHNOLOGY LIMITED

Inventor： Kefei WANG ,  Qiao ZENG ,  Liangzhen XIAO ,  Fei WU

IPC: H01M10/0566 ,  H01M10/0525 ,  H01M10/0567 ,  H01M10/0569

Abstract: An electrolyte including a dinitrile compound, a trinitrile compound, and propyl propionate. Based on the total weight of the electrolyte, the weight percentage of the dinitrile compound is X, the weight percentage of the trinitrile compound is Y, and the weight percentage of the propyl propionate is Z, wherein about 2.2 wt %≤(X+Y)≤about 8 wt %, about 0.1≤(X/Y)≤about 6, 1 wt %≤Y

公开(公告)号：US20200044234A1

公开(公告)日：2020-02-06

申请号：US16183549

申请日：2018-11-07

Applicant: NINGDE AMPEREX TECHNOLOGY LIMITED

Inventor： Qiao ZENG ,  Liangzhen XIAO ,  Kefei WANG

IPC: H01M4/13 ,  H01M4/78 ,  H01M10/0525 ,  H01M10/0583

Abstract: A battery comprises a first electrode assembly including a first electrode, and a second electrode assembly disposed adjacent the first electrode assembly along a first direction. The first electrode comprises a first segment that is disposed on an outer portion of the second electrode assembly. The first electrode may further comprise a second segment electrically connected to the first segment. The second segment is disposed on an outer portion of the first electrode assembly.

公开(公告)号：US20250079498A1

公开(公告)日：2025-03-06

申请号：US18953771

申请日：2024-11-20

Applicant: Ningde Amperex Technology Limited

Inventor： Kefei WANG

IPC: H01M10/0525 ,  H01M4/02 ,  H01M4/133 ,  H01M4/36 ,  H01M4/38 ,  H01M4/583 ,  H01M4/60 ,  H01M4/62 ,  H01M10/0567 ,  H01M10/0568 ,  H01M10/0569

Abstract: An electrochemical device, including a cathode, an anode and an electrolytic solution. The anode includes a carbon material and hydroxyalkyl methylcellulose. The electrolytic solution includes propionate. The electrolytic solution further includes one or more of the following: LiPF6, LiBF4, LiPO2F2, LiSbF6, LiAsF6, LiC4F9SO3, LiClO4, LiB(C2O4)2, or LiN(CxF2x+1SO2)(CyF2y+1SO2). x and y are integers from 1-5.
in

公开(公告)号：US20250030002A1

公开(公告)日：2025-01-23

申请号：US18901390

申请日：2024-09-30

Applicant: Ningde Amperex Technology Limited

Inventor： Xingyong WANG ,  Dongdong HAN ,  Kefei WANG

IPC: H01M4/62 ,  H01M10/052 ,  H01M10/0587

Abstract: An electrochemical apparatus includes an electrode assembly. The electrode assembly includes an electrode plate; the electrode plate includes a current collector; the current collector includes a first region and a second region; an active material layer is arranged on the first region; and a functional layer is arranged on the second region, and the functional layer includes an organic polymer and inorganic particles, where the thickness of the functional layer is H1, where 1 μm≤H1≤15 μm; and Dv90 of the inorganic particles satisfies: 1 μm≤Dv90≤4.5 μm.

公开(公告)号：US20240356078A1

公开(公告)日：2024-10-24

申请号：US18758426

申请日：2024-06-28

Applicant: Ningde Amperex Technology Limited

Inventor： Kefei WANG

IPC: H01M10/0567 ,  H01M4/02 ,  H01M4/131 ,  H01M4/505 ,  H01M4/525 ,  H01M4/66 ,  H01M10/0525

CPC classification number: H01M10/0567 ,  H01M4/131 ,  H01M4/505 ,  H01M4/525 ,  H01M4/664 ,  H01M4/667 ,  H01M10/0525 ,  H01M2004/028 ,  H01M2300/0025

Abstract: An electrochemical apparatus includes a positive electrode, a negative electrode, and an electrolyte, where the positive electrode includes a positive electrode current collector and a positive electrode active material layer formed on the positive electrode current collector. The positive electrode active material layer includes a positive electrode active material, where the positive electrode active material includes element tungsten. The electrolyte includes fluoroethylene carbonate. The electrochemical apparatus features improved low-temperature rate performance and high-temperature and high-pressure safety.

公开(公告)号：US20240266603A1

公开(公告)日：2024-08-08

申请号：US18626877

申请日：2024-04-04

Applicant: NINGDE AMPEREX TECHNOLOGY LIMITED

Inventor： Kefei WANG ,  Qiao ZENG ,  Liangzhen XIAO ,  Fei WU

IPC: H01M10/0566 ,  H01M4/13 ,  H01M4/64 ,  H01M10/0525 ,  H01M10/0567 ,  H01M10/0569

CPC classification number: H01M10/0566 ,  H01M4/13 ,  H01M4/64 ,  H01M10/0525 ,  H01M10/0567 ,  H01M10/0569 ,  H01M2300/0025 ,  H01M2300/0034 ,  H01M2300/0037

Abstract: An electrolyte including a dinitrile compound, a trinitrile compound, and propyl propionate. Based on the total weight of the electrolyte, the weight percentage of the dinitrile compound is X, the weight percentage of the trinitrile compound is Y, and the weight percentage of the propyl propionate is Z, wherein, about 2 wt %