公开(公告)号：US20230420679A1

公开(公告)日：2023-12-28

申请号：US18121707

申请日：2023-03-15

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Qifan WU ,  Ming ZHANG ,  Ziyi YIN ,  Yacheng LIU ,  Tongxian ZHANG

IPC: H01M4/62 ,  H01M4/04

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

Abstract: The present disclosure provides a positive electrode slurry comprising a polyether siloxane, wherein the polyether siloxane may comprise at least the following structural units:




wherein D is methyl or ethyl; A is hydrogen, halogen or haloalkyl; B is hydroxyl, R, OR, or ROR′, wherein the R and R′ are each independently a linear or branched alkyl group containing 1 to 8 carbons; and E is phenyl, alkyl-substituted phenyl, ether-substituted phenyl, or halophenyl.

公开(公告)号：US20230395789A1

公开(公告)日：2023-12-07

申请号：US18231801

申请日：2023-08-09

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Yale WU ,  Ming ZHANG ,  Jimin YANG

IPC: H01M4/38 ,  H01M4/62 ,  H01M4/134

CPC classification number: H01M4/386 ,  H01M4/622 ,  H01M4/625 ,  H01M4/134 ,  H01M2004/027

Abstract: A silicon-containing negative electrode active material may include a silicon-based material and a conductive layer, located on the surface of the silicon-based material, including a polymer and a one-dimension conductive material, wherein, the polymer may include polar functional group(s) including one or more selected form carboxylic acid group, hydroxyl group, amide groups, amino group, carbonyl group, and nitro group; and the polar functional group(s) in the polymer may have a mass percentage content as A1, and silicon in the silicon-based material may have a mass percentage content as A2, the silicon-containing negative electrode active material may satisfy: A2 is from 5% to 100% and A2/A1 is from 0.2 to 8.

公开(公告)号：US20230170483A1

公开(公告)日：2023-06-01

申请号：US18145572

申请日：2022-12-22

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Ming ZHANG ,  Tongxian ZHANG

IPC: H01M4/62 ,  H01M4/58 ,  H01M4/36 ,  H01M4/485 ,  H01M4/505 ,  H01M4/525 ,  H01M10/0525

CPC classification number: H01M4/622 ,  H01M4/625 ,  H01M4/5825 ,  H01M4/364 ,  H01M4/485 ,  H01M4/505 ,  H01M4/525 ,  H01M10/0525 ,  H01M2004/028

Abstract: A fluorine-containing copolymer has a weight average molecular weight of 600,000 to 2,000,000, and is represented by following formula:




One of R1 and R2 is H, or unsubstituted or non-perfluoro-substituted C1-C8 linear or branched alkyl, and the other is H, F, or C1-C8 linear or branched alkyl substituted or unsubstituted with fluorine. R3 and R4 are each independently selected from H, F, or C1-C8 linear or branched alkyl substituted or unsubstituted with fluorine. R5-R7 are each independently selected from H, F, or C1-C8 linear or branched alkyl substituted or unsubstituted with fluorine. R8 is perfluoro-substituted C1-C8 linear or branched alkyl. m, n, and q are molar proportions of respective repeating units in the fluorine-containing copolymer. M≥90%, 0

公开(公告)号：US20240192141A1

公开(公告)日：2024-06-13

申请号：US18127468

申请日：2023-03-28

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Lin MA ,  Ming ZHANG ,  Yunlong HUANG ,  Man CHEN

IPC: G01N21/88

CPC classification number: G01N21/8806 ,  G01N2021/8835

Abstract: The present application discloses an appearance inspection device and an apparatus for manufacturing a battery cell. The appearance inspection device for inspecting a battery cell comprises: a first camera assembly comprising a first camera and a first light source, the first light source being configured to provide illumination to the first camera, and the first camera being configured to acquire images of a first surface of the battery cell when the first surface is covered by an insulating layer; and a second camera assembly comprising a second camera and a second light source, the second light source being configured to provide illumination to the second camera, and the second camera being configured to acquire images of the first surface when at least a partial region of the first surface is not covered by the insulating layer. According to the technical solutions provided by the present application, the versatility of the appearance inspection device can be improved, thereby improving the battery manufacturing efficiency.

公开(公告)号：US20240021828A1

公开(公告)日：2024-01-18

申请号：US18371689

申请日：2023-09-22

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Qifan WU ,  Ming ZHANG

IPC: H01M4/62 ,  H01M4/133 ,  H01M4/587

CPC classification number: H01M4/622 ,  H01M4/133 ,  H01M4/587 ,  H01M2004/027

Abstract: The present application relates to a styrene-acrylic emulsion and a preparation method therefor, an anode plate, a secondary battery and an electric device. A Dv50 particle size of a latex particle in the styrene-acrylic emulsion is 350-900 nm, optionally 350-800 nm. The anode plate includes an anode current collector; and an anode active material layer disposed on at least one surface of the anode current collector, the anode active material layer includes a hard carbon material and a binder, the binder is derived from the above-mentioned styrene-acrylic emulsion.

公开(公告)号：US20210119260A1

公开(公告)日：2021-04-22

申请号：US17131803

申请日：2020-12-23

Applicant: Contemporary Amperex Technology Co., Limited

Inventor： Chengdu LIANG ,  Cuiping ZHANG ,  Ming ZHANG ,  Peipei CHEN ,  Hailin ZOU ,  Liye LI

IPC: H01M10/0568 ,  H01M10/0525 ,  H01M10/0567 ,  H01M10/0569 ,  H01M4/525 ,  C07C311/48 ,  C07D327/00

Abstract: The present application relates to a lithium ion battery, comprising: a positive electrode plate, a negative electrode plate, a separator disposed between the positive electrode plate and the negative electrode plate, and an electrolytic solution, the positive electrode plate including a positive electrode current collector and a positive electrode active material layer provided on at least one side of the positive electrode current collector, and the electrolytic solution including an organic solvent, a lithium salt and an additive, wherein the lithium salt comprises a primary lithium salt, the primary lithium salt is a first compound in an amount of 30% or more relative to the total molar amount of the lithium salt, and the first compound has a structure represented by the following formula I, and wherein the additive comprises a second compound represented by the following formula II.

公开(公告)号：US20210119258A1

公开(公告)日：2021-04-22

申请号：US17135600

申请日：2020-12-28

Applicant: Contemporary Amperex Technology Co., Limited

Inventor： Hailin ZOU ,  Ming ZHANG ,  Changlong HAN ,  Cuiping ZHANG

IPC: H01M10/0567 ,  H01M10/0587 ,  H01M4/505 ,  H01M4/525 ,  H01M10/0525 ,  H01M50/538

Abstract: The present disclosure relates to a lithium ion battery including an electrode assembly; and an electrolytic solution for infiltrating the electrode assembly and an electrical apparatus including the same, wherein the electrode assembly includes an electrode body, a positive electrode tab, and a negative electrode tab. The electrode body includes a positive electrode plate, a negative electrode plate, and a separator that are wound together around an axis. The positive electrode plate includes a positive current collector and a positive electrode material layer provided on at least one surface of the positive electrode current collector. In an axial direction (X), the electrode body has two opposite side portions, and the positive electrode tab and the negative electrode tab extend from the two side portions of the electrode body, respectively. A diffusion rate v of the electrolytic solution to the electrode body is from 0.01 μg/s to 5 μg/s.

公开(公告)号：US20190267671A1

公开(公告)日：2019-08-29

申请号：US16410938

申请日：2019-05-13

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Ming ZHANG ,  Changlong HAN ,  Cui ZHANG ,  Xiaochong ZHOU ,  Feng JU

IPC: H01M10/0567 ,  H01M10/0525

Abstract: The present disclosure provides an electrolyte and a secondary lithium battery. The electrolyte comprises a lithium salt, an organic solvent and an additive. The additive comprises fluoroborate and lithium difluorophosphate. When the electrolyte of the present disclosure is applied to the secondary lithium battery, the secondary lithium battery can have excellent high temperature cycle performance, high temperature storage performance, low temperature discharge performance and large rate charging performance at the same time, and low temperature lithium precipitation of the secondary lithium battery can be significantly inhibited.

公开(公告)号：US20240372067A1

公开(公告)日：2024-11-07

申请号：US18773844

申请日：2024-07-16

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Qifan WU ,  Xiaobin DONG ,  Ming ZHANG

IPC: H01M4/133 ,  H01M4/02 ,  H01M4/587 ,  H01M4/62 ,  H01M10/054

Abstract: The present application provides a negative electrode plate, a secondary battery, a battery module, a battery pack, and an electrical device. The negative electrode plate includes: a negative electrode current collector; and a negative electrode film layer which is located on at least one surface of the negative electrode current collector and includes first negative electrode active material particles and second negative electrode active material particles, the first negative electrode active material particles including a plurality of adsorption holes and having a tap density of 0.4 g/cm3-1.4 g/cm3, wherein a difference d in median particle size between the first negative electrode active material particles and the second negative electrode active material particles satisfies: 3 μm≤d≤19 μm, and a compaction density PD of the negative electrode film layer satisfies: 0.8 g/cm3≤PD≤1.4 g/cm3.

公开(公告)号：US20240213488A1

公开(公告)日：2024-06-27

申请号：US18416554

申请日：2024-01-18

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Qifan WU ,  Ming ZHANG ,  Yi ZHOU

IPC: H01M4/62 ,  H01M4/04 ,  H01M4/133 ,  H01M4/1393 ,  H01M4/02

CPC classification number: H01M4/628 ,  H01M4/0404 ,  H01M4/043 ,  H01M4/133 ,  H01M4/1393 ,  H01M2004/021 ,  H01M2004/027

Abstract: An anode plate includes a current collector and an anode active material layer. The anode active material layer is disposed on at least one surface of the current collector. The anode active material layer includes a fluoropolymer and a carbon nanotube; the fluoropolymer is dispersed in the anode active material layer; and the carbon nanotube is wrapped around the fluoropolymer and an anode active material in the anode active material layer.