公开(公告)号：US20240120603A1

公开(公告)日：2024-04-11

申请号：US18536262

申请日：2023-12-12

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Xiayi Wu ,  Jingjing Yu ,  Wenzhong Liu ,  Yu Tang ,  Zhenhua Li ,  Xing Li

IPC: H01M50/289 ,  H01M50/209 ,  H01M50/262 ,  H01M50/271

CPC classification number: H01M50/289 ,  H01M50/209 ,  H01M50/262 ,  H01M50/271

Abstract: Provided are a battery, an electrical apparatus, and a method and an apparatus for making a battery. The battery comprises: a battery cell; a first component, wherein a first surface of the first component is connected to at least one of the battery cells through an adhesion member, the adhesion member comprises a first adhesion structure and a second adhesion structure, the first adhesion structure is located at the periphery of the second adhesion structure, and the first adhesion structure has an elongation at break greater than that of the second adhesion structure. The battery, the electrical apparatus, and the method and the apparatus for making the battery according to the embodiments of the present application can enhance the safety of the battery.

公开(公告)号：US11881585B2

公开(公告)日：2024-01-23

申请号：US18048445

申请日：2022-10-21

Applicant: Contemporary Amperex Technology Co., Limited

Inventor： Mengqin Zhang ,  Yanjie Zhao ,  Jianghui Lin ,  Xing Li ,  Haizu Jin

IPC: H01M4/62 ,  C07C329/06 ,  H01M4/02

CPC classification number: H01M4/623 ,  C07C329/06 ,  H01M4/625 ,  H01M2004/021 ,  H01M2004/028 ,  H01M2220/20

Abstract: A binder compound, a conductive binder, and a secondary battery containing the same are provided. In some embodiments, the binder compound of the present disclosure has a structure of formula (I), where R1 and R2 each independently represent a straight or branched C1-12 alkyl; R3 represents a halogen or cyano group; R4 represents a hydroxymethyl or amino; Z represents a straight or branched C1-12 alkylene; and m represents an integer selected from 7600-47000. The binder compound and the conductive binder of the present disclosure can improve the storage and cycle performances of the secondary battery.

公开(公告)号：US20230317948A1

公开(公告)日：2023-10-05

申请号：US18330093

申请日：2023-06-06

Applicant: Contemporary Amperex Technology Co., Limited

Inventor： Jianghui Lin ,  Yanjie Zhao ,  Xing Li ,  Haizu Jin

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

CPC classification number: H01M4/62 ,  H01M4/0404 ,  H01M4/0471 ,  H01M4/1393 ,  H01M4/133 ,  H01M2004/027

Abstract: An electrode plate and a method for preparing same are provided. The electrode plate according to this application includes a current collector and an electrode material layer disposed on at least one surface of the current collector. The electrode material layer includes an active material and optionally a conductive agent. The electrode material layer includes a compound represented by Formula (I). The electrode plate according to this application is characterized by a relatively high porosity, more uniform distribution of pores, a more noticeable effect of being initially infiltrated by an electrolytic solution, a higher capacity of retaining the electrolytic solution, alleviated initial polarization, and a reduced direct-current resistance (DCR), and therefore, can improve the performance of a battery that contains the electrode plate.

公开(公告)号：US11196044B2

公开(公告)日：2021-12-07

申请号：US17057527

申请日：2019-11-15

Applicant: Contemporary Amperex Technology Co., Limited

Inventor： Yaohui Wang ,  Xing Li ,  Zhenhua Li

IPC: H01M4/36 ,  H01M50/581 ,  H01G11/28 ,  H01G11/32 ,  H01M4/06 ,  H01M4/13 ,  H01M4/62 ,  H01M6/50 ,  H01M10/42 ,  H01M4/02

Abstract: The present application relates to a positive electrode plate and an electrochemical device. The positive electrode plate includes a current collector, a positive active material layer and a safety coating disposed between the current collector and the positive active material layer, the safety coating including a polymer matrix and a conductive material, wherein the polymer matrix is fluorinated polyolefin and/or chlorinated polyolefin, and when the safety coating and the positive active material layer are collectively referred to as a positive film layer, the positive film layer includes Na ions and/or K ions at a content of 100 ppm or more, and has an absorption peak at 1646 cm−1 in infrared absorption spectrum. The positive electrode plate may improve safety performance at elevated temperature of the electrochemical device by quickly disconnecting the circuit at high temperature conditions or when an internal short circuit occurs.

公开(公告)号：US11095008B2

公开(公告)日：2021-08-17

申请号：US17043711

申请日：2019-11-15

Applicant: Contemporary Amperex Technology Co., Limited

Inventor： Xing Li ,  Zhenhua Li ,  Haizu Jin

IPC: H01M4/62 ,  H01M50/581 ,  H01M4/66 ,  H01M4/02

Abstract: This application relates to a positive electrode plate and an electrochemical device. The positive electrode plate includes a current collector, a safety coating, a difficultly soluble layer and a positive active material layer, wherein the safety coating, the difficultly soluble layer and the positive active material layer are successively disposed on the current collector; wherein the safety coating includes a polymer matrix, a conductive material and an inorganic filler; wherein the difficultly soluble layer includes a binder and a conductive agent, and wherein the binder of the difficultly soluble layer has a solubility in an oil solvent smaller than the solubility of the polymer matrix of the safety coating in such oil solvent.

公开(公告)号：US20240332762A1

公开(公告)日：2024-10-03

申请号：US18739347

申请日：2024-06-11

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Liangfan Xu ,  Wenlin Zhou ,  Qianqian Zhang ,  Xing Li ,  Quankun Li ,  Shaojun Niu ,  Haizu Jin

IPC: H01M50/59 ,  H01M10/42 ,  H01M50/103 ,  H01M50/15 ,  H01M50/586

CPC classification number: H01M50/59 ,  H01M10/4235 ,  H01M50/103 ,  H01M50/15 ,  H01M50/586

Abstract: A battery cell, a battery and an electricity-consuming apparatus are provided by the present application. The battery cell includes an electrode assembly including an electrode main body that includes an electrode sheet and a separator stacked with each other, and an electrode tab extending from an end face of the electrode main body; and an infiltrating film including a first end and a second end arranged opposite to each other in a length direction thereof, in which the second end is connected to the separator, and the first end extends beyond the electrode main body.

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：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：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.