公开(公告)号：US11646424B2

公开(公告)日：2023-05-09

申请号：US17123268

申请日：2020-12-16

Applicant: Contemporary Amperex Technology Co., Limited

Inventor： Xin Liu ,  Qisen Huang ,  Shiwen Wang ,  Xianghui Liu ,  Jia Peng ,  Mingling Li ,  Changliang Sheng

IPC: H01M4/66 ,  H01M4/587 ,  H01M4/58 ,  H01M4/62 ,  H01M10/0525 ,  H01M10/0569 ,  H01M10/0567 ,  H01M4/133 ,  H01M4/136 ,  C07C317/12 ,  H01M4/02

CPC classification number: H01M4/667 ,  C07C317/12 ,  H01M4/133 ,  H01M4/136 ,  H01M4/587 ,  H01M4/5825 ,  H01M4/628 ,  H01M10/0525 ,  H01M10/0567 ,  H01M10/0569 ,  H01M2004/021 ,  H01M2300/0037

Abstract: This application discloses a lithium-ion secondary battery. The lithium-ion secondary battery includes a positive electrode plate, a negative electrode plate, a separator, and an electrolytic solution. The positive electrode plate includes a positive electrode current collector and a positive active material layer disposed on a surface of the positive electrode current collector and containing a positive active material, and the negative electrode plate includes a negative electrode current collector and a negative active material layer disposed on a surface of the negative electrode current collector and containing a negative active material; wherein the positive active material includes lithium iron phosphate, and the negative active material includes graphite; and wherein the positive electrode current collector and/or the negative electrode current collector is a composite current collector, and the composite current collector includes an organic support layer and a conductive layer disposed on at least one surface of the organic support layer.

公开(公告)号：US11611081B2

公开(公告)日：2023-03-21

申请号：US17128090

申请日：2020-12-19

Applicant: Contemporary Amperex Technology Co., Limited

Inventor： Xin Liu ,  Qisen Huang ,  Shiwen Wang ,  Xianghui Liu ,  Jia Peng ,  Mingling Li ,  Changliang Sheng

IPC: H01M4/66 ,  H01M4/04 ,  H01M10/0525 ,  H01M4/02

Abstract: The present disclosure provides a lithium ion secondary battery, a battery core, a negative electrode plate and an apparatus containing the lithium ion secondary battery. The lithium ion secondary battery includes a battery core and an electrolytic solution, the battery core including a positive electrode plate comprising a positive current collector and a positive active material layer, a separator, and a negative electrode plate comprising a negative current collector and a negative active material layer, wherein the positive current collector and/or the negative current collector are a composite current collector, the composite current collector comprises a polymer-based support layer and a conductive layer disposed on at least one surface of the support layer, and the composite current collector has a thermal conductivity in a range of 0.01 W/(m·K) to 10 W/(m·K), preferably in a range of 0.1 W/(m·K) to 2 W/(m·K).

公开(公告)号：US11158846B2

公开(公告)日：2021-10-26

申请号：US16452541

申请日：2019-06-26

Applicant: Contemporary Amperex Technology Co., Limited

Inventor： Changliang Sheng ,  Huafeng Huang ,  Qisen Huang

IPC: H01M4/139 ,  H01M4/36 ,  H01M10/0525 ,  H01M10/0585 ,  H01M4/02

Abstract: The invention refers to negative electrode plate, preparation method thereof and electrochemical device. The negative electrode plate comprises: a negative current collector; a negative active material layer disposed on at least one surface of the negative current collector, the negative active material layer comprising opposite first surface and second surface, wherein the first surface is disposed away from the negative current collector; and an inorganic dielectric layer consisting of an inorganic dielectric material disposed on the first surface of the negative active material layer. The negative electrode plate provided by the application is useful in an electrochemical device, and can result in an electrochemical device having simultaneously excellent safety performance and cycle performance.

公开(公告)号：US12095082B2

公开(公告)日：2024-09-17

申请号：US17345159

申请日：2021-06-11

Applicant: Contemporary Amperex Technology Co., Limited

Inventor： Changliang Sheng ,  Shiwen Wang ,  Qisen Huang ,  Cheng Li ,  Chengdu Liang

IPC: H01M4/38 ,  H01M4/04 ,  H01M4/134 ,  H01M4/1395 ,  H01M4/36 ,  H01M4/48 ,  H01M4/62 ,  H01M10/0525 ,  H01M10/0562 ,  H01M4/02

CPC classification number: H01M4/386 ,  H01M4/0404 ,  H01M4/0447 ,  H01M4/134 ,  H01M4/1395 ,  H01M4/366 ,  H01M4/382 ,  H01M4/483 ,  H01M4/62 ,  H01M4/628 ,  H01M10/0525 ,  H01M10/0562 ,  H01M2004/021 ,  H01M2004/027 ,  H01M2200/00

Abstract: The present application discloses a negative electrode plate, an electrode assembly, a lithium ion battery, preparation process thereof, and apparatus containing lithium-ion battery. The negative electrode plate includes a negative electrode active material layer comprising a negative electrode active material, the negative electrode active material comprising a silicon-based material; a binder-free inorganic dielectric layer disposed on one side of the negative electrode active material layer away from the negative electrode current collector, the inorganic dielectric layer comprising an inorganic dielectric material, and the inorganic dielectric layer including at least a main body portion disposed on the surface of the negative electrode active material layer, the main body portion having a channel penetratingly arranged along a thickness direction of the main body portion; and a lithium metal layer disposed on the surface of the inorganic dielectric layer away from the negative electrode active material layer.

公开(公告)号：US20220123443A1

公开(公告)日：2022-04-21

申请号：US17562928

申请日：2021-12-27

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Changliang Sheng ,  Zige Zhang ,  Qingrui Xue ,  Wei Li ,  Jing Li ,  Pengxiang Wang

IPC: H01M50/536 ,  H01M10/0587

Abstract: A secondary battery and an electrode member thereof, a battery module, and a related apparatus are provided. The electrode member includes a current collector, an active material layer, an adapting sheet, and an electrode lead. The current collector includes an insulating substrate, a first conductive layer, and a second conductive layer. The first conductive layer and the second conductive layer each include a coated region and an uncoated region, the coated region is coated with an active material layer, and the uncoated region is not coated with an active material layer, a size of the current collector in a length direction is larger than that in a width direction, and the uncoated region is located on a side of the coated region in a length direction. The adapting sheet includes a first conductive member and a second conductive member.

公开(公告)号：US11289694B2

公开(公告)日：2022-03-29

申请号：US16452543

申请日：2019-06-26

Applicant: Contemporary Amperex Technology Co., Limited

Inventor： Huafeng Huang ,  Changliang Sheng ,  Cheng Li ,  Qisen Huang

IPC: H01M4/1393 ,  H01M4/131 ,  H01M4/133 ,  H01M4/134 ,  H01M4/1391 ,  H01M4/64 ,  H01M10/0525 ,  H01M4/02

Abstract: The invention refers to negative electrode plate, preparation method thereof and electrochemical device. The negative electrode plate comprises: a negative current collector, a negative active material layer, and an inorganic dielectric layer which are provided in a stacked manner; the negative active material layer comprises opposite first surface and second surface, wherein the first surface is disposed away from the negative current collector; the inorganic dielectric layer is disposed on the first surface of the negative active material layer. The negative electrode plate provided by the application is useful in an electrochemical device, and can result in an electrochemical device having simultaneously excellent safety performance and cycle performance.

公开(公告)号：US12119483B2

公开(公告)日：2024-10-15

申请号：US17536118

申请日：2021-11-29

Applicant: Contemporary Amperex Technology Co., Limited

Inventor： Changliang Sheng ,  Shiwen Wang ,  Qisen Huang ,  Cheng Li ,  Chengdu Liang

IPC: H01M4/36 ,  H01M4/13 ,  H01M4/38 ,  H01M4/62 ,  H01M10/0525 ,  H01M4/02

CPC classification number: H01M4/366 ,  H01M4/13 ,  H01M4/382 ,  H01M4/628 ,  H01M10/0525 ,  H01M2004/021 ,  H01M2004/027

Abstract: The present application discloses a negative electrode plate, an electrode assembly, a lithium-ion battery and process for the preparation thereof, and apparatus containing lithium-ion battery. The negative electrode plate includes a negative electrode current collector; a negative electrode active material layer disposed on the negative electrode current collector; a binder-free inorganic dielectric layer disposed on one side of the negative electrode active material layer away from the negative electrode current collector, the inorganic dielectric layer comprising an inorganic dielectric material, and the inorganic dielectric layer including at least a main body portion disposed on the surface of the negative electrode active material layer, the main body portion having a thickness of from 30 nm to 1000 nm; and a lithium metal layer disposed on the surface of the inorganic dielectric layer away from the negative electrode active material layer.

公开(公告)号：US12074315B2

公开(公告)日：2024-08-27

申请号：US17057062

申请日：2019-09-26

Applicant: Contemporary Amperex Technology Co., Limited

Inventor： Yuqun Zeng ,  Chengdu Liang ,  Changliang Sheng ,  Huafeng Huang ,  Qisen Huang

IPC: H01M4/36 ,  C01G53/00 ,  H01M4/131 ,  H01M4/1315 ,  H01M4/505 ,  H01M4/525 ,  H01M4/62 ,  H01M10/0525 ,  H01M4/02

CPC classification number: H01M4/366 ,  C01G53/50 ,  H01M4/131 ,  H01M4/1315 ,  H01M4/505 ,  H01M4/525 ,  H01M4/62 ,  H01M10/0525 ,  H01M2004/021 ,  H01M2004/028 ,  H01M2220/20

Abstract: This application discloses a positive-electrode plate, a lithium-ion battery equipped with the positive-electrode plate, a battery module, a battery pack, and an apparatus. The lithium-ion battery includes a positive-electrode plate, a negative-electrode plate, a separator, and an electrolyte. The positive-electrode plate includes a positive-electrode current collector and a positive-electrode active substance layer that is disposed on a surface of the positive-electrode current collector and that includes a positive-electrode active substance. An inorganic dielectric layer containing no binder is disposed on a surface of the positive-electrode active substance layer, and a resistance of the positive-electrode plate is not higher than 8 ohms.

公开(公告)号：US11901560B2

公开(公告)日：2024-02-13

申请号：US17964074

申请日：2022-10-12

Applicant: Contemporary Amperex Technology Co., Limited

Inventor： Cheng Li ,  Changliang Sheng ,  Huafeng Huang ,  Qisen Huang

IPC: H01M4/62 ,  C23C14/00 ,  C23C14/08 ,  C23C14/30 ,  H01M4/04 ,  H01M4/133 ,  H01M4/1393 ,  H01M4/587 ,  H01M4/02

CPC classification number: H01M4/628 ,  C23C14/0021 ,  C23C14/081 ,  C23C14/30 ,  H01M4/0404 ,  H01M4/0423 ,  H01M4/133 ,  H01M4/1393 ,  H01M4/587 ,  H01M2004/021 ,  H01M2004/027

Abstract: The invention refers to negative electrode plate, preparation method thereof and electrochemical device. The negative electrode plate comprises: a negative current collector, a negative active material layer, and an inorganic dielectric layer which are provided in a stacked manner; the negative active material layer comprises opposite first surface and second surface, wherein the first surface is disposed away from the negative current collector; the inorganic dielectric layer is disposed on the first surface of the negative active material layer and consists of an inorganic dielectric material. The negative electrode plate provided by the application is useful in an electrochemical device, and can result in an electrochemical device having simultaneously excellent safety performance and cycle performance.

公开(公告)号：US11522194B2

公开(公告)日：2022-12-06

申请号：US16452542

申请日：2019-06-26

Applicant: Contemporary Amperex Technology Co., Limited

Inventor： Cheng Li ,  Changliang Sheng ,  Huafeng Huang ,  Qisen Huang

IPC: H01M4/04 ,  H01M4/02 ,  H01M4/62 ,  C23C14/00 ,  C23C14/08 ,  C23C14/30 ,  H01M4/133 ,  H01M4/1393 ,  H01M4/587

Abstract: The invention refers to negative electrode plate, preparation method thereof and electrochemical device. The negative electrode plate comprises: a negative current collector, a negative active material layer, and an inorganic dielectric layer which are provided in a stacked manner; the negative active material layer comprises opposite first surface and second surface, wherein the first surface is disposed away from the negative current collector; the inorganic dielectric layer is disposed on the first surface of the negative active material layer and consists of an inorganic dielectric material. The negative electrode plate provided by the application is useful in an electrochemical device, and can result in an electrochemical device having simultaneously excellent safety performance and cycle performance.