公开(公告)号：US20240356174A1

公开(公告)日：2024-10-24

申请号：US18653972

申请日：2024-05-02

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Kai WU ,  Yu ZHANG ,  Zige ZHANG ,  Zhengyuan ZHAO ,  Jinsong ZHANG

IPC: H01M50/536 ,  H01M4/13 ,  H01M4/66

CPC classification number: H01M50/536 ,  H01M4/13 ,  H01M4/667

Abstract: An electrode plate includes a current collector. The current collector includes a conductive layer and an insulating layer. The conductive layer includes a tab portion. In thickness direction of the electrode plate, the conductive layer is provided at two opposite sides of the insulating layer. The insulating layer includes a first region and a second region, and in width direction of the electrode plate, at least one end of the first region is connected to the second region. Thickness of the second region is less than thickness of the first region, and the tab portion is at least partially disposed in the second region. The electrode plate further includes an active substance layer applied on a surface of the conductive layer facing away from the insulating layer. The tab portion is not coated with the active substance layer.

公开(公告)号：US20240162581A1

公开(公告)日：2024-05-16

申请号：US18355730

申请日：2023-07-20

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Wumei FANG ,  Liwen JIANG ,  Kai WU

IPC: H01M50/553 ,  H01M50/103 ,  H01M50/503 ,  H01M50/531 ,  H01M50/55

CPC classification number: H01M50/553 ,  H01M50/103 ,  H01M50/503 ,  H01M50/531 ,  H01M50/55 ,  H01M2220/20

Abstract: A battery cell includes a housing having a stepped structure at an end portion in a first direction, an electrode assembly disposed within the housing and including an electrode tab, and a first connector disposed at the stepped structure and including a first pin. The first pin is connected to the electrode tab of the electrode assembly. The first connector is configured to be capable of being plugged with an external connector to achieve electrical connection between the battery cells.

公开(公告)号：US20240105939A1

公开(公告)日：2024-03-28

申请号：US18338690

申请日：2023-06-21

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Yiyang WU ,  Yonghuang YE ,  Baozhen WU ,  Kai WU

IPC: H01M4/58 ,  H01M4/505 ,  H01M4/525 ,  H01M10/0525

CPC classification number: H01M4/5825 ,  H01M4/505 ,  H01M4/525 ,  H01M10/0525 ,  H01M2004/028 ,  H01M2220/20

Abstract: A positive electrode plate includes a first active material and a second active material. The first active material is selected from a lithium iron phosphate-based material represented by a formula LiFe1-xMnxPO4, where x is between 0-0.8. The second active material includes one or more of lithium nickelate, lithium manganate, lithium cobaltate, lithium nickel cobalt manganate, lithium nickel cobalt aluminate, a lithium-rich manganese base, and lithium vanadium phosphate. An amount of the second active material used accounts for, by mass, 10-70%, on the basis of a total mass of the first active material and the second active material.

公开(公告)号：US20230307656A1

公开(公告)日：2023-09-28

申请号：US18315730

申请日：2023-05-11

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Huaichao TANG ,  Kai WU ,  Chengdu LIANG ,  Wei LI

IPC: H01M4/62 ,  H01M4/131 ,  H01M4/525 ,  H01M4/505

CPC classification number: H01M4/628 ,  H01M4/131 ,  H01M4/525 ,  H01M4/505 ,  H01M2004/028

Abstract: A secondary battery includes an electrode plate including a current collector, a functional layer, and an active material layer. At least a portion of a surface of the current collector includes a plurality of protruding portions and a plurality of recessed portions. The functional layer is disposed in one or more of the plurality of recessed portions. The active material layer covers and contacts the current collector and the functional layer. The functional layer includes at least one of a polymer material or a positive temperature coefficient (PTC) material.

公开(公告)号：US20230191868A1

公开(公告)日：2023-06-22

申请号：US17888506

申请日：2022-08-16

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Chuanhui ZHANG ,  Bao LI ,  Kai WU

IPC: B60H1/00 ,  B60H1/32 ,  H01M10/6564 ,  H01M10/613

CPC classification number: B60H1/00278 ,  B60H1/00885 ,  B60H1/3205 ,  H01M10/6564 ,  H01M10/613 ,  B60H2001/00307 ,  B60H2001/00928

Abstract: The embodiments of this application relate to the technical field of battery, and in particular, to a thermal management system, a method and an equipment. In this thermal management system, a compressor and a condenser form a cooling loop with a thermal exchange pipeline of the battery, and a compressor and an evaporator form a heating loop with a thermal exchange pipeline, so that this thermal management system can provide both cooling and heating for battery, in comparison with the direct cooling system and heating film, this thermal management system features simple structure and high reliability. In addition, the locations of the condenser and the evaporator can be reasonably arranged as required to achieve the secondary utilization of hot air and cold air.

公开(公告)号：US20220123364A1

公开(公告)日：2022-04-21

申请号：US17565474

申请日：2021-12-30

Applicant: Contemporary Amperex Technology Co., Limited

Inventor： Yongkun LI ,  Kai WU ,  Bo CHENG ,  Feng JU

IPC: H01M10/0567 ,  H01M10/0525 ,  H01M10/0568

Abstract: In the embodiments of the present application, an electrolyte, a lithium-ion battery comprising the electrolyte, a battery module, a battery pack, and a device are provided. The electrolyte in the embodiments of the present application comprises an organic solvent, an electrolyte lithium salt dissolved in the organic solvent, and an additive comprising a first additive and a second additive. The first additive is selected from one or more of the compounds represented by formula I, and the second additive is selected from one or more of the compounds represented by formula II. After applying the electrolyte of the present application to a lithium-ion battery, the lithium ion battery has a better cycle performance and storage performance at a high temperature, and lower direct-current impedance at a low temperature, such that the lithium ion battery has both a better high-temperature performance and a better low-temperature performance.

公开(公告)号：US20220021068A1

公开(公告)日：2022-01-20

申请号：US15734449

申请日：2020-07-10

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Yuqun ZENG ,  Xiaobo CHEN ,  Peng WANG ,  Yao LI ,  Kai WU

IPC: H01M50/317 ,  H01M10/613 ,  H01M50/209 ,  H01M10/6554 ,  H01M50/507

Abstract: The present application discloses a battery and a related device, preparation method, and preparation apparatus thereof. The battery includes: a plurality of battery cells, at least one battery cell of the plurality of battery cells including a pressure relief mechanism, and the pressure relief mechanism being configured, when an internal pressure of the at least one battery cell reaches a threshold, to be actuated to release the internal pressure; and a bus component configured to electrically connect the plurality of battery cells, wherein the pressure relief mechanism and the bus component are respectively arranged on different sides of the at least one battery cell, such that emissions from the at least one battery cell are discharged in a direction away from the bus component when the pressure relief mechanism is actuated.

公开(公告)号：US20200088801A1

公开(公告)日：2020-03-19

申请号：US16548987

申请日：2019-08-23

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Yuqun ZENG ,  Kai WU ,  Sixia MENG ,  Guoxiu WU ,  Qiandeng LI

IPC: G01R31/382 ,  H02J7/00 ,  H01M10/44 ,  H01M10/48

Abstract: Disclosed is a battery pack temperature detection system, comprising: a battery pack disposed with a plurality of temperature monitoring points; a plurality of sampling circuits, wherein each temperature monitoring point is disposed with at least two of the plurality of sampling circuits, and the at least two of the plurality of sampling circuits disposed for one temperature monitoring point are different sampling circuits; and a control module configured to acquire temperature data of each temperature monitoring point by each of the disposed sampling circuits, and determine a current temperature of the battery pack according to the temperature data to determine whether the temperature of the battery pack exceeds a preset value.

公开(公告)号：US20240413495A1

公开(公告)日：2024-12-12

申请号：US18807273

申请日：2024-08-16

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Yiyang WU ,  Yonghuang YE ,  Kai WU

IPC: H01M50/538 ,  H01M10/0587 ,  H01M10/613 ,  H01M10/625 ,  H01M10/647 ,  H01M10/6554 ,  H01M50/103 ,  H01M50/249

Abstract: A battery cell includes a shell and two electrode assemblies located in the shell. Each electrode assembly includes a main body portion and a first tab and a second tab extending from the main body portion and having opposite polarities. The battery cell includes a first side and a second side oppositely arranged in a height direction of the battery cell. The main body portion of the first electrode assembly has the first tab and the second tab extending from the first side and the first tab extending from the second side. The main body portion of the second electrode assembly has the second tab extending from the first side and the first tab extending from the second side. The two second tabs located on the first side are electrically connected to each other, and the two first tabs located on the second side are electrically connected to each other.

公开(公告)号：US20240291056A1

公开(公告)日：2024-08-29

申请号：US18655440

申请日：2024-05-06

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Lan XIE ,  Shiliang LIN ,  Zhen LIN ,  Shuai SONG ,  Wei LI ,  Zhonghong LI ,  Kai WU

IPC: H01M10/48 ,  H01M10/42 ,  H01M10/44

CPC classification number: H01M10/482 ,  H01M10/441 ,  H01M10/488 ,  H01M2010/4271

Abstract: An electrode assembly short circuit identification method includes: during charging, according to preset sampling time points, sequentially acquiring a voltage of an electrode assembly at each of the sampling time points; judging whether the electrode assembly has a continuous voltage drop according to the voltage acquired at each of the sampling time points; and determining whether the electrode assembly has a short circuit according to a judgment result.