公开(公告)号：US12212016B2

公开(公告)日：2025-01-28

申请号：US17708351

申请日：2022-03-30

Applicant: Ningde Amperex Technology Limited

Inventor： Chuantao Song ,  Rui Li ,  Haiyang Nan ,  Yisong Su

IPC: H01M50/375 ,  H01M50/184 ,  H01M50/342 ,  H01M50/531

Abstract: A battery cell includes an electrode assembly and a packaging bag, where the electrode assembly includes a tab, the packaging bag is configured to accommodate the electrode assembly, a sealing zone is formed on a periphery of the packaging bag, one end of the tab is electrically connected to a body of the electrode assembly, and an other end of the tab protrudes out of the sealing zone; the sealing zone is provided with a weak zone, and in a predetermined temperature range, a packaging tension of the weak zone in the packaging bag reduces to release gas inside the battery cell to the outside of the battery cell.

公开(公告)号：US10916769B2

公开(公告)日：2021-02-09

申请号：US16298738

申请日：2019-03-11

Applicant: NINGDE AMPEREX TECHNOLOGY LIMITED

Inventor： Xinru Su ,  Baozhang Li ,  Yisong Su ,  Zhiwen Xiao

IPC: H01M4/36 ,  H01M4/131 ,  H01M4/136 ,  H01M4/525 ,  H01M4/58 ,  H01M4/62 ,  H01M4/66 ,  H01M10/0525 ,  H01M4/02

Abstract: The present application relates to a cathode, an electrochemical device and an electronic device including the same. The cathode includes: a cathode current collector, a first cathode active material layer, a second cathode active material layer and an insulating layer; where the first cathode active material layer covers a first portion of a first surface of the cathode current collector, and the insulating layer covers a second portion of the first surface of the cathode current collector that is different from the first portion, where a first distance exists between the insulating layer and the first cathode active material layer in a longitudinal direction of the cathode current collector. By providing a gap between the active material layer in a two-layer structure and the insulating layer in the cathode, the potential problem of the overlapping of the active material layer in a two-layer structure and the insulating layer on the cathode is alleviated, thereby ensuring that the electrochemical device cannot catch fire and lead to failure in the event of being punctured, and further ensuring the mechanical safety performance of the electrochemical 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：US20200075943A1

公开(公告)日：2020-03-05

申请号：US16174329

申请日：2018-10-30

Applicant: Ningde Amperex Technology Limited

Inventor： Wei Cui ,  Chaowang Lin ,  Changchuan Shi ,  Yisong Su

IPC: H01M4/48 ,  H01M10/0525

Abstract: The present application provides an electrode and an electrochemical device comprising the electrode. The electrode comprises a current collector; and an inorganic layer arranged on a surface of the current collector, wherein the inorganic layer comprises a metal oxide and does not comprise a polymer. The electrode of the lithium ion battery provided by the present application has little influence on the volume energy density of the lithium ion battery while improving the safety performance of the lithium ion battery.

公开(公告)号：US20200036004A1

公开(公告)日：2020-01-30

申请号：US16172852

申请日：2018-10-28

Applicant: Ningde Amperex Technology Limited

Inventor： Peng Du ,  Yuansen Xie ,  Yisong Su ,  Fan Yang

IPC: H01M4/505 ,  H01M10/0525 ,  H01M4/525 ,  H01M4/583 ,  H01M4/04

Abstract: The present application relates to a negative electrode composite material and preparation thereof and a lithium ion battery. The negative electrode composite material comprises an active material, a metal oxide on the surface of the active material, wherein the ratio of the specific surface area of the negative electrode composite material to the specific surface area of the active material is 1-7. The present application improves the volume energy density and safety performance of a lithium ion battery by selecting a ratio of a specific surface area of the negative electrode composite material to the active material.

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.