公开(公告)号：US11664528B2

公开(公告)日：2023-05-30

申请号：US17707378

申请日：2022-03-29

Applicant: Ningde Amperex Technology Limited

Inventor： Chaowang Lin ,  Fan Yang ,  Yisong Su ,  Huawei Zhong ,  Changming Qu ,  Xiaozhen Zhang

IPC: H01M4/02 ,  H01M10/0525 ,  H01M4/36 ,  H01M4/38 ,  H01M4/50 ,  H01M4/52 ,  H01M4/583 ,  H01M4/62 ,  H01M4/66

CPC classification number: H01M10/0525 ,  H01M4/366 ,  H01M4/382 ,  H01M4/50 ,  H01M4/52 ,  H01M4/583 ,  H01M4/623 ,  H01M4/661 ,  H01M2004/027 ,  H01M2004/028

Abstract: An electrode includes a current collector; a first active material layer including a first active material; and a second active material layer including a second active material; wherein the first active material layer is arranged between the current collector and the second active material layer. The first active material layer is formed on a surface of the current collector, and a particle size of 90% accumulative volume of the first active material is less than 40 μm. The active material layer is used in the present application to ensure that the electrochemical device and the electronic device do not generate a short circuit when pressed by an external force, thereby ensuring the mechanical safety performance of the electrochemical device and the electronic device.

公开(公告)号：US12015118B2

公开(公告)日：2024-06-18

申请号：US17707137

申请日：2022-03-29

Applicant: Ningde Amperex Technology Limited

Inventor： Chaowang Lin ,  Fan Yang ,  Yisong Su ,  Huawei Zhong ,  Changming Qu ,  Xiaozhen Zhang

IPC: H01M4/02 ,  H01M4/36 ,  H01M4/38 ,  H01M4/50 ,  H01M4/52 ,  H01M4/583 ,  H01M4/62 ,  H01M4/66 ,  H01M10/0525

CPC classification number: H01M10/0525 ,  H01M4/366 ,  H01M4/382 ,  H01M4/50 ,  H01M4/52 ,  H01M4/583 ,  H01M4/623 ,  H01M4/661 ,  H01M2004/027 ,  H01M2004/028

Abstract: An electrode includes a current collector; a first active material layer including a first active material; and a second active material layer including a second active material; wherein the first active material layer is arranged between the current collector and the second active material layer. The first active material layer is formed on a surface of the current collector, and a particle size of 90% accumulative volume of the first active material is less than 40 μm. The active material layer is used to ensure that the electrochemical device and the electronic device do not generate a short circuit when pressed by an external force, thereby ensuring the mechanical safety performance of the electrochemical device and the electronic device.

公开(公告)号：US10693181B2

公开(公告)日：2020-06-23

申请号：US16000597

申请日：2018-06-05

Applicant: Ningde Amperex Technology Limited

Inventor： Chaowang Lin ,  Fan Yang ,  Yisong Su ,  Huawei Zhong ,  Changming Qu ,  Xiaozhen Zhang

IPC: H01M4/02 ,  H01M10/0525 ,  H01M4/36 ,  H01M4/38 ,  H01M4/50 ,  H01M4/52 ,  H01M4/583 ,  H01M4/62 ,  H01M4/66

Abstract: The present application provides an electrode and a lithium-ion battery. The electrode comprises: a current collector; a first active material layer comprising a first active material; and a second active material layer comprising a second active material; wherein the first active material layer is arranged between the current collector and the second active material layer. The first active material layer is formed on at least one surface of the current collector, and a ratio of an average particle size of the second active material to an average particle size of the first active material is from 1:1 to 40:1. The active material layer is used in the present application to ensure that the lithium-ion battery does not generate a short circuit when pressed by an external force, thereby ensuring the mechanical safety performance of the lithium-ion battery.

公开(公告)号：US20190267664A1

公开(公告)日：2019-08-29

申请号：US16000597

申请日：2018-06-05

Applicant: Ningde Amperex Technology Limited

Inventor： Chaowang Lin ,  Fan Yang ,  Yisong Su ,  Huawei Zhong ,  Changming Qu ,  Xiaozhen Zhang

IPC: H01M10/0525 ,  H01M4/583 ,  H01M4/62 ,  H01M4/38 ,  H01M4/66 ,  H01M4/52 ,  H01M4/50 ,  H01M4/36

Abstract: The present application provides an electrode and a lithium-ion battery. The electrode comprises: a current collector; a first active material layer comprising a first active material; and a second active material layer comprising a second active material; wherein the first active material layer is arranged between the current collector and the second active material layer. The first active material layer is formed on at least one surface of the current collector, and a ratio of an average particle size of the second active material to an average particle size of the first active material is from 1:1 to 40:1. The active material layer is used in the present application to ensure that the lithium-ion battery does not generate a short circuit when pressed by an external force, thereby ensuring the mechanical safety performance of the lithium-ion battery.

公开(公告)号：US20200266483A1

公开(公告)日：2020-08-20

申请号：US16868966

申请日：2020-05-07

Applicant: Ningde Amperex Technology Limited

Inventor： Chaowang Lin ,  Fan Yang ,  YiSong Su ,  Huawei Zhong ,  Changming Qu ,  Xiaozhen Zhang

IPC: H01M10/0525 ,  H01M4/66 ,  H01M4/62 ,  H01M4/583 ,  H01M4/52 ,  H01M4/50 ,  H01M4/38 ,  H01M4/36

Abstract: The present application provides an electrode, an electrochemical device, and an electronic device. The electrode includes: a current collector; a first active material layer including a first active material; and a second active material layer including a second active material; wherein the first active material layer is arranged between the current collector and the second active material layer. The first active material layer is formed on a surface of the current collector, and a particle size of 90% accumulative volume of the first active material is less than 40 μm. The active material layer is used in the present application to ensure that the electrochemical device and the electronic device do not generate a short circuit when pressed by an external force, thereby ensuring the mechanical safety performance of the electrochemical device and the electronic device.

公开(公告)号：US20190267612A1

公开(公告)日：2019-08-29

申请号：US16170020

申请日：2018-10-24

Applicant: Ningde Amperex Technology Limited

Inventor： Xiaozhen Zhang ,  Fan Yang ,  Changming Qu ,  Yisong Su ,  Chaowang Lin ,  Huawei Zhong

IPC: H01M4/131 ,  H01M4/133 ,  H01M4/505 ,  H01M4/525 ,  H01M10/0525 ,  C01G45/12

Abstract: The present application provides a positive electrode and a lithium-ion battery. The positive electrode comprises a current collector; a first active material layer comprising a first active material; and a second active material layer; wherein the first active material layer is arranged between the current collector and the second active material layer, the first active material layer comprises a first active material, and the first active material is at least one selected from a group consisting of a modified lithium transition metal oxide positive electrode material and a modified lithium iron phosphate. The positive electrode of the present application helps to improve the thermal stability of the lithium-ion battery, and the improvement of the thermal stability may reduce the proportion of the thermal runaway when the lithium-ion battery is internally short-circuited so that the safety performance of the lithium-ion battery is improved.

公开(公告)号：US11929483B2

公开(公告)日：2024-03-12

申请号：US16170020

申请日：2018-10-24

Applicant: Ningde Amperex Technology Limited

Inventor： Xiaozhen Zhang ,  Fan Yang ,  Changming Qu ,  Yisong Su ,  Chaowang Lin ,  Huawei Zhong

IPC: C01B25/26 ,  C01G45/12 ,  C01G53/00 ,  H01M4/131 ,  H01M4/133 ,  H01M4/505 ,  H01M4/525 ,  H01M10/0525 ,  H01M4/02

CPC classification number: H01M4/131 ,  C01B25/26 ,  C01G45/1257 ,  C01G53/50 ,  H01M4/133 ,  H01M4/505 ,  H01M4/525 ,  H01M10/0525 ,  C01P2002/52 ,  C01P2002/88 ,  H01M2004/028

Abstract: The present application provides a positive electrode and a lithium-ion battery. The positive electrode comprises a current collector; a first active material layer comprising a first active material; and a second active material layer; wherein the first active material layer is arranged between the current collector and the second active material layer, the first active material layer comprises a first active material, and the first active material is at least one selected from a group consisting of a modified lithium transition metal oxide positive electrode material and a modified lithium iron phosphate. The positive electrode of the present application helps to improve the thermal stability of the lithium-ion battery, and the improvement of the thermal stability may reduce the proportion of the thermal runaway when the lithium-ion battery is internally short-circuited so that the safety performance of the lithium-ion battery is improved.

公开(公告)号：US11322774B2

公开(公告)日：2022-05-03

申请号：US16868966

申请日：2020-05-07

Applicant: Ningde Amperex Technology Limited

Inventor： Chaowang Lin ,  Fan Yang ,  YiSong Su ,  Huawei Zhong ,  Changming Qu ,  Xiaozhen Zhang

IPC: H01M4/02 ,  H01M10/0525 ,  H01M4/36 ,  H01M4/38 ,  H01M4/50 ,  H01M4/52 ,  H01M4/583 ,  H01M4/62 ,  H01M4/66

Abstract: The present application provides an electrode, an electrochemical device, and an electronic device. The electrode includes: a current collector; a first active material layer including a first active material; and a second active material layer including a second active material; wherein the first active material layer is arranged between the current collector and the second active material layer. The first active material layer is formed on a surface of the current collector, and a particle size of 90% accumulative volume of the first active material is less than 40 μm. The active material layer is used in the present application to ensure that the electrochemical device and the electronic device do not generate a short circuit when pressed by an external force, thereby ensuring the mechanical safety performance of the electrochemical device and the electronic device.