公开(公告)号：US20240194873A1

公开(公告)日：2024-06-13

申请号：US18426344

申请日：2024-01-30

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Zhenhua Li ,  Jiawei Xu ,  Hanli Fu ,  Xiayi Wu ,  Xing Li ,  Shaojun Niu ,  Haizu Jin

IPC: H01M4/58 ,  H01M4/02 ,  H01M4/04 ,  H01M10/0568

CPC classification number: H01M4/5825 ,  H01M4/0416 ,  H01M4/0471 ,  H01M10/0568 ,  H01M2004/028 ,  H01M2220/20

Abstract: The present application relates to a secondary battery, comprising (1) a positive electrode plate; and (2) an electrolyte solution; wherein a positive electrode active material is an active material having a chemical formula of AxB1-xMeO2 or AxB1-xMPO4 with dications A and B, where Me, M, A, B, and x are as defined in the specification; and the electrolyte solution comprises an electrolyte salt of the dications A and B, where A and B are as defined in the positive electrode active material; as well as a method for preparing a corresponding positive electrode active material, a corresponding battery module, a battery pack, and an electrical apparatus. The secondary battery of the present application comprises a positive electrode active material comprising the dications A and B and an electrolyte solution of a salt of the same dications.

公开(公告)号：US20230261306A1

公开(公告)日：2023-08-17

申请号：US18296364

申请日：2023-04-05

Applicant: Contemporary Amperex Technology Co., Limited

Inventor： Yu Tang ,  Peng Wang ,  Xiayi Wu ,  Zhenhua Li ,  Xiang Wang ,  Xing Li

IPC: H01M50/264 ,  H01M50/271 ,  H01M50/204 ,  H01M50/249 ,  B60K1/04

CPC classification number: H01M50/264 ,  H01M50/271 ,  H01M50/204 ,  H01M50/249 ,  B60K1/04 ,  H01M2220/20

Abstract: A battery and a power consuming device are provided. In some embodiments, the battery includes: a case assembly, including a case and fixed beams fixed in the case; a battery module arranged in the case, wherein the battery module includes a plurality of battery cells arranged in a first direction (X); and a restraining component, configured to cover the battery module and fixed to the fixed beams, wherein the restraining component is provided with a weak area, and the weak area is configured to allow the restraining component to be deformed when being subjected to an expansion force of each battery cell.

公开(公告)号：US11658330B2

公开(公告)日：2023-05-23

申请号：US17732571

申请日：2022-04-29

Applicant: Contemporary Amperex Technology Co., Limited

Inventor： Haizu Jin ,  Xiaowen Zhang ,  Zhenhua Li

IPC: H01M10/04 ,  H01M4/525 ,  H01M10/0565

CPC classification number: H01M10/0459 ,  H01M4/525 ,  H01M10/045 ,  H01M10/0565

Abstract: This application relates to a battery comprising a positive electrode plate, a separator, and a negative electrode plate, wherein the positive electrode plate comprises a positive electrode current collector and at least two layers of positive active material coated on at least one surface of the positive electrode current collector, and wherein an underlying positive active material layer in contact with the positive electrode current collector comprises a first positive active material, a first polymer material and a first conductive material; and wherein an upper positive active material layer in contact with the underlying positive active material layer and away from the positive electrode current collector comprises a second positive active material, a second polymer material and a second conductive material, and the first polymer material comprises fluorinated polyolefin and/or chlorinated polyolefin polymer material. The battery has good safety and improved electrical properties.

公开(公告)号：US11289748B2

公开(公告)日：2022-03-29

申请号：US16138451

申请日：2018-09-21

Applicant: Contemporary Amperex Technology Co., Limited

Inventor： Zhenhua Li ,  Haizu Jin ,  Xing Li

IPC: H01M10/637 ,  H01M4/36 ,  H01M4/62 ,  H01M10/0525 ,  H01G11/28 ,  H01G11/32 ,  H01G11/46 ,  H01G11/48 ,  H01M10/42 ,  H01C7/02 ,  H01G11/06 ,  H01M4/13 ,  H01G11/18 ,  H01G11/36 ,  H01M4/02 ,  H01G11/40 ,  H01M4/04

Abstract: This application relates to an electrode plate, an electrochemical device and a safety coating. The electrode plate comprises a current collector, an electrode active material layer and a safety coating disposed between the current collector and the electrode active material layer. The safety coating layer comprises fluorinated polyolefin and/or chlorinated polyolefin polymer matrix, a conductive material and an inorganic filler. The electrode plate can quickly cut off the circuit when the electrochemical device (for example, a capacitor, a primary battery, or a secondary battery) is in a high temperature condition or an internal short circuit occurs, and thus it may improve the high temperature safety performance of the electrochemical device.

公开(公告)号：US11189821B2

公开(公告)日：2021-11-30

申请号：US16971118

申请日：2019-11-15

Applicant: Contemporary Amperex Technology Co., Limited

Inventor： Xiaowen Zhang ,  Zhenhua Li ,  Haizu Jin

IPC: H01M4/131 ,  H01M4/133 ,  H01M4/134 ,  H01M4/137 ,  H01M4/36 ,  H01M4/62 ,  H01M4/66 ,  H01M10/0525 ,  H01M4/02

Abstract: This application relates to an electrochemical device. The electrochemical device comprises a positive electrode plate, a negative electrode plate and an electrolyte, wherein the positive electrode plate comprises a current collector, a positive electrode active material layer and a safety coating disposed between the current collector and the positive electrode active material layer; the safety coating comprises a polymer matrix, a conductive material and an inorganic filler; wherein based on the total weight of the polymer matrix, the conductive material and the inorganic filler, the polymer matrix is present in a content of from 35 wt % to 75 wt %, the conductive material is present in a content of from 5 wt % to 25 wt %, and the inorganic filler is present in a content of from 10 wt % to 60 wt %; and the electrolyte has a viscosity at normal temperature of ≤4 cp.

公开(公告)号：US11177539B2

公开(公告)日：2021-11-16

申请号：US17356565

申请日：2021-06-24

Applicant: Contemporary Amperex Technology Co., Limited

Inventor： Yuanbao Chen ,  Dongyang Shi ,  Ning Chen ,  Haizu Jin ,  Zhenhua Li ,  Fei Hu

IPC: H01M2/20 ,  H01M50/502 ,  H01M50/147 ,  H01M50/533 ,  H01M50/54 ,  H01M50/543 ,  H01M10/04 ,  H01M10/058 ,  H01M50/50 ,  H01M50/531 ,  H01M10/0525 ,  H01M50/538

Abstract: The present application relates to a current collector and a secondary battery. The current collector is used to electrically connect a pole and tab of a secondary battery, and comprises: a first sheet; a second sheet that is disposed to intersect the first sheet, the second sheet being used to electrically connect to the pole; a current collection unit, the current collection unit and the second sheet being disposed at two opposite sides of the first sheet in a first thickness direction thereof, and the first thickness direction thereof intersecting with a second thickness direction of the second sheet; the current collection unit comprises a first current collection sheet, the first current collection sheet is used to electrically connect to the tab, and the first current collection sheet is provided with a first connection terminal that is connected to the first sheet.

公开(公告)号：US20210328293A1

公开(公告)日：2021-10-21

申请号：US17362960

申请日：2021-06-29

Applicant: Contemporary Amperex Technology Co., Limited

Inventor： Ning Chen ,  Haizu Jin ,  Dongyang Shi ,  Zhenhua Li ,  Fei Hu ,  Yuanbao Chen

IPC: H01M50/171 ,  H01M50/54 ,  H01M50/533 ,  H01M50/209

Abstract: The present disclosure relates to a secondary battery and a battery module. The secondary battery includes a case including a receiving space with an opening; a cap assembly connected to the case and close the opening; an electrode assembly disposed in the receiving space and including two end faces opposite to each other in a first direction perpendicular to an axial direction of the receiving space, and tabs extending from the end faces and two or more electrode units stacked in the axial direction; and a current collecting unit, including a first piece extending in the axial direction and a first current collecting piece connected to the first piece, the tab extends in the first direction and is connected to the first current collecting piece, and a portion of the tab connected to the first current collecting piece and the first current collecting piece are stacked in the axial direction.

公开(公告)号：US11139540B2

公开(公告)日：2021-10-05

申请号：US16437932

申请日：2019-06-11

Applicant: Contemporary Amperex Technology Co., Limited

Inventor： Haizu Jin ,  Dongyang Shi ,  Zhenhua Li ,  Xingdi Chen ,  Ning Chen ,  Fei Hu

IPC: H01M50/54 ,  H01M50/20 ,  H01M50/147 ,  H01M10/04 ,  H01M10/0587

Abstract: The present disclosure relates to a battery module and a battery pack. The battery module comprises two or more secondary batteries arranged side by side in a first direction, each of which includes a case, an electrode assembly and a closing portion, wherein the case has a receiving hole comprising an opening and extending in a second direction, and the first direction intersects with the second direction, wherein the closing portion is sealingly connected with the case to close the opening, the electrode assembly is disposed in the receiving hole and includes two or more electrode units, the electrode unit includes a first electrode plate, a second electrode plate and a separator, and the two or more electrode units are stacked in the second direction.

公开(公告)号：US20200161641A1

公开(公告)日：2020-05-21

申请号：US16424020

申请日：2019-05-28

Applicant: Contemporary Amperex Technology Co., Limited

Inventor： Haizu Jin ,  Zhenhua Li ,  Xing Li

IPC: H01M4/36 ,  H01M4/62

Abstract: This application relates to a battery comprising a positive electrode plate, a separator, and a negative electrode plate, wherein the positive electrode plate comprises a positive electrode current collector and at least two layers of positive active material coated on at least one surface of the positive electrode current collector, and wherein an underlying positive active material layer in contact with the positive electrode current collector comprises a first positive active material, a first polymer material and a first conductive material; and wherein an upper positive active material layer in contact with the underlying positive active material layer and away from the positive electrode current collector comprises a second positive active material, a second polymer material and a second conductive material, and the first polymer material comprises fluorinated polyolefin and/or chlorinated polyolefin polymer material. The battery has good safety and improved electrical properties.

公开(公告)号：US20200161639A1

公开(公告)日：2020-05-21

申请号：US16422866

申请日：2019-05-24

Applicant: Contemporary Amperex Technology Co., Limited

Inventor： Xiaowen ZHANG ,  Zhenhua Li ,  Haizu Jin

IPC: H01M4/36 ,  H01M4/62

Abstract: This application relates to a battery comprising a positive electrode plate, a separator, a negative electrode plate and an electrolyte, wherein the positive electrode plate comprises a positive electrode current collector and at least two layers of positive active material coated on at least one surface of the positive electrode current collector, and wherein the underlying positive active material layer in contact with the positive electrode current collector comprises a first positive active material, a first polymer material and a first conductive material, and the first polymer material comprises fluorinated polyolefin and/or chlorinated polyolefin polymer material. The battery has good safety and improved electrical properties, and the viscosity at normal temperature of the electrolyte is ≤4 cp.