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：US20230307618A1

公开(公告)日：2023-09-28

申请号：US18197727

申请日：2023-05-16

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Yuqun ZENG

IPC: H01M4/38 ,  H01M4/66 ,  H01M4/62 ,  H01M10/0569 ,  H01M10/0568 ,  H01M4/134

CPC classification number: H01M4/382 ,  H01M4/661 ,  H01M4/623 ,  H01M10/0569 ,  H01M10/0568 ,  H01M4/134 ,  H01M2300/0028

Abstract: This application provides a lithium metal negative electrode plate, an electrochemical apparatus, and an electronic device. The lithium metal negative electrode plate may include: a copper foil; an active substance layer formed on at least part of a surface of the copper foil, where the active substance layer includes a lithium metal alloy; and a composite protection layer formed on at least part of a surface of the active substance layer, where thickness of the composite protection layer may be less than or equal to 10 μm, and the composite protection layer may include a lithium fluoride inorganic layer and a polymer organic layer.

公开(公告)号：US20230231180A1

公开(公告)日：2023-07-20

申请号：US18189309

申请日：2023-03-24

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Yuqun ZENG

IPC: H01M10/054 ,  H01M4/58 ,  H01M4/583 ,  H01M4/62 ,  H01M4/80 ,  H01M50/414

CPC classification number: H01M10/054 ,  H01M4/5825 ,  H01M4/583 ,  H01M4/622 ,  H01M4/80 ,  H01M50/414 ,  H01M2004/021

Abstract: A flat-plate type sodium metal battery and an electrochemical device are described. The battery comprises a positive electrode plate and a negative electrode plate, the positive electrode plate provided with a first micro-through-hole arranged in an array on at least part of the surface thereof, the negative electrode plate provided with a second micro-through-hole arranged in an array on at least part of the surface thereof, wherein the first micro-through-hole and the second micro-through-hole have an overlapping area of ≥5% of the total area of the second micro-through-hole of the negative electrode plate. Disposing a first micro-through-hole on the positive electrode plate, and a second micro-through-hole on the negative electrode plate, and setting the aperture size and aperture spacing of micro-through-holes are beneficial to increasing infiltration and penetration of the electrolyte in the positive electrode plate and are conducive to rapid infiltration to large-sized electrode plates.

公开(公告)号：US20220246993A1

公开(公告)日：2022-08-04

申请号：US17717736

申请日：2022-04-11

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Haizu JIN ,  Hu XU ,  Xinxin DU ,  Xing LI ,  Chengdu LIANG ,  Yuqun ZENG

IPC: H01M10/0587

Abstract: Embodiments of the present application provide an electrode assembly, a battery cell, a battery, and a method and a device for manufacturing an electrode assembly. The electrode assembly includes a first electrode plate and a second electrode plate. The first electrode plate and the second electrode plate are wound along a winding direction to form a winding structure, and the winding structure includes a bending region. The first electrode plate includes a first segment that exceeds a winding starting end of the second electrode plate, and at least a part of the first segment is configured to provide a support force to a part of the first electrode plate and the second electrode plate in the bending region and located at an outer side the first segment, making a structure of the first electrode plate and the second electrode plate more compact in the bending region.

公开(公告)号：US20220013856A1

公开(公告)日：2022-01-13

申请号：US17113067

申请日：2020-12-06

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Yuqun ZENG ,  Xiaobo CHEN ,  Peng WANG ,  Yao LI ,  Chengdu LIANG ,  Yongshou LIN

IPC: H01M50/342 ,  H01M10/04 ,  H01M10/6556 ,  H01M10/0525 ,  H01M10/625

Abstract: The present application discloses a battery including a battery cell, a thermal management component, an avoidance chamber and a collection chamber. The battery cell includes a pressure relief mechanism; the thermal management component is configured to adjust a temperature of the battery cell; the avoidance chamber is configured to provide a space allowing the pressure relief mechanism to be actuated; and the collection chamber is configured to collect emissions from the battery cell when the pressure relief mechanism is actuated. The thermal management component is configured such that emissions are capable of passing through the thermal management component when the pressure relief mechanism is actuated, and then entering the collection chamber through the avoidance chamber. Therefore, the pressure relief mechanism may not need to be provided on a side of an electrode terminal of the battery cell and emissions relieved by the pressure relief mechanism may be collected.

公开(公告)号：US20210391572A1

公开(公告)日：2021-12-16

申请号：US17460723

申请日：2021-08-30

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Yuqun ZENG ,  Chengdu LIANG ,  Chuanmiao YAN ,  Jinhua LIU

IPC: H01M4/36 ,  H01M4/38 ,  H01M4/587 ,  H01M10/0525 ,  H01M4/48 ,  H01M4/62 ,  H01M4/134

Abstract: A negative electrode plate, a secondary battery and an apparatus thereof are provided in the present application. The negative electrode plate includes a negative electrode current collector and a negative membrane disposed on the negative electrode current collector, and the negative membrane includes a first coating layer and a second coating layer. The first coating layer is located on an outermost layer of the negative membrane and includes a first negative active material including a silicon-based material and a carbon material, and in the first coating layer, a mass percentage of the silicon-based material is 0.5% to 10%. The second coating layer is disposed between the first coating layer and the negative electrode current collector and includes a second negative active material including a silicon-based material and a carbon material, and in the second coating layer, a mass percentage of the silicon-based material is 5%-50%.

公开(公告)号：US20210043913A1

公开(公告)日：2021-02-11

申请号：US16976752

申请日：2019-09-12

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Fenggang ZHAO ,  Yuqun ZENG ,  Jian GUO ,  Quankun LI ,  Peng WANG

IPC: H01M2/30 ,  H01M2/04 ,  H01M2/34

Abstract: The present disclosure relates to a cap assembly and a secondary battery. The cap assembly includes a cap plate provided with an electrode lead-out hole; an electrode terminal, covering the electrode lead-out hole and including a main body, wherein the main body is provided with a recess on a side wall; an isolating member including a receiving portion, wherein the main body is received in the receiving portion; and a protrusion, connected to an inner wall of the isolating member and extending towards an axis of the electrode lead-out hole, wherein the protrusion is received in the recess so as to prevent the main body from rotating relative to the isolating member. The cap assembly according to the embodiments of the present application can improve an overcurrent capacity and stability of the electrode terminal.

公开(公告)号：US20200161624A1

公开(公告)日：2020-05-21

申请号：US16426871

申请日：2019-05-30

Applicant: Contemporary Amperex Technology Co., Limited

Inventor： Yuqun ZENG ,  Yongshou LIN ,  Zhenhua LI ,  Haizu JIN ,  Xiaowen ZHANG

IPC: H01M2/34 ,  H01M4/62 ,  H01M4/66 ,  H01M10/0525 ,  H01G11/68 ,  H01G11/14

Abstract: The present invention relates to a positive electrode plate and an electrochemical device. The positive electrode plate comprises a current collector, a positive active material layer and a safety coating disposed between the current collector and the positive active material layer, and wherein the safety coating comprises a polymer matrix, a conductive material and an inorganic filler and wherein when the safety coating and the positive active material layer are collectively referred as a film layer, the film layer has an elongation of 30% or more. The positive electrode plate may improve the safety performance during nail penetration of the electrochemical device such as capacitor, primary battery or secondary battery and the like.

公开(公告)号：US20200094682A1

公开(公告)日：2020-03-26

申请号：US16357558

申请日：2019-03-19

Applicant: Contemporary Amperex Technology Co., Limited

Inventor： Yuqun ZENG ,  Kai WU ,  Wei DAI ,  Chao WANG ,  Qiandeng LI

IPC: B60L3/04 ,  B60L3/00 ,  H03K17/687

Abstract: The present disclosure provides a high-voltage interlock system and a detection method thereof. The high-voltage interlock system includes a target control device and at least one non-target control device connected in sequence. The target control device includes a detection unit, a current generation controller, a current generator, and a second high-voltage component. A controller in the target control device generates a pulse drive signal for driving the current generation controller, receives a detection result signal output from a current detector, and determines a fault of a high-voltage interlock circuit according to the detection result signal; the current generation controller generates an alternating voltage signal according to the pulse drive signal; the current generator outputs an alternating current signal according to the alternating voltage signal; the current detector acquires a voltage signal across a detection resistor set and outputs the detection result signal.

公开(公告)号：US20200091489A1

公开(公告)日：2020-03-19

申请号：US16515960

申请日：2019-07-18

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Yuqun ZENG ,  Fenggang ZHAO ,  Daohui LIU ,  Yangzhi HUANG ,  Chuanlian CHEN ,  Shengtian CAI ,  Hanqing GAO

IPC: H01M2/20 ,  H01M2/24

Abstract: The present disclosure provides a battery module and a busbar assembly thereof. The busbar assembly comprises a first busbar, a second busbar and a first insulator. The first busbar comprises a first connecting portion connected to a first battery unit, a second connecting portion connected to a second battery unit and a first main portion connecting the first connecting portion and the second connecting portion. The second busbar comprises a third connecting portion connected to a third battery unit, a fourth connecting portion connected to a fourth battery unit and a second main portion connecting the third connecting portion and the fourth connecting portion. The first main portion partially overlaps the second main portion, and the first insulator insulates the second main portion and the first main portion. The first battery unit, the third battery unit, the second battery unit and the fourth battery unit are arranged sequentially.