公开(公告)号：US11664524B2

公开(公告)日：2023-05-30

申请号：US16436683

申请日：2019-06-10

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Yuqun Zeng ,  Fenggang Zhao ,  Chuanlian Chen ,  Yangzhi Huang ,  Pengfei Gao ,  Jihua Yao

IPC: H01M10/04 ,  H01M50/209 ,  H01M50/522 ,  H01M50/505 ,  H01M50/509

CPC classification number: H01M10/0431 ,  H01M50/209 ,  H01M50/505 ,  H01M50/509 ,  H01M50/522

Abstract: The present disclosure relates to a battery module and a battery pack. The battery module includes a plurality of battery units connected in series; at least two electrode output connecting pieces each disposed at an output end of the plurality of battery units; a plurality of bridging busbars, each connecting two battery units spaced by one or more other battery units among the plurality of battery units; and an adjacent busbar connecting two adjacent battery units among the plurality of battery units. An electrical connection path is formed in the battery module by the electrode output connecting pieces, the bridging busbars and the adjacent busbar. The battery module according to the present disclosure is applicable in diverse situations, and capable of improving safety performance and energy density.

公开(公告)号：US11456501B2

公开(公告)日：2022-09-27

申请号：US16663048

申请日：2019-10-24

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Yuqun Zeng ,  Fenggang Zhao ,  Xingdi Chen ,  Lei Wang ,  Linggang Zhou ,  Peng Wang ,  Derong Wang ,  Cong Bao

IPC: H01M50/20 ,  B65D21/02 ,  H01M50/249 ,  H01M50/242 ,  H01M50/244 ,  B60K1/04 ,  B60L50/60

Abstract: The present disclosure provides a lower box body, a battery box and a vehicle, the lower box body comprises a base body, a first protecting assembly, a mounting hole. The base body comprises a bottom plate portion, a side plate portion, eave portions. The first protecting assembly is provided at outside of the base body, fixed to the base body and is attached to the eave portion. The mounting hole penetrates the eave portion and the first protecting assembly. The first protecting assembly improves the entirety structural strength of the lower box. Because the mounting hole is formed by penetrating the eave portion and the first protecting assembly, the structural stability of the mounting location of the lower box body is improved, thereby making the mounting location of the lower box body not be prone to be deformed or damaged when the battery box is subjected to the external force.

公开(公告)号：US11088405B2

公开(公告)日：2021-08-10

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

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：US11050128B2

公开(公告)日：2021-06-29

申请号：US16666749

申请日：2019-10-29

Applicant: Contemporary Amperex Technology Co., Limited

Inventor： Yuqun Zeng ,  Fenggang Zhao ,  Yong Zhou ,  Zhijun Guo ,  Peng Wang

IPC: H01M2/30 ,  H01M2/06 ,  H01M2/26 ,  H01M50/543 ,  H01M50/172 ,  H01M50/531 ,  H01M50/15 ,  H01M50/528

Abstract: The present disclosure relates to a secondary battery and a manufacturing method of the secondary battery, and the secondary battery includes a case; an electrode assembly, accommodated in the case and including a main body and a tab connected to the main body; a cap plate, coupled to the case; an electrode terminal, located on an outer side of the cap plate and provided with a through hole; and a current collecting member, including an extending portion and a connecting portion connected to the extending portion, wherein the connecting portion is located on an inner side of the cap plate and is directly connected to the tab, and the extending portion is adapted to extend toward the electrode terminal and protrude into the through hole, and is connected to the electrode terminal. The configuration of the secondary battery of the present disclosure is conducive to improving an energy density.

公开(公告)号：US20210119290A1

公开(公告)日：2021-04-22

申请号：US17137122

申请日：2020-12-29

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Dongyang SHI ,  Haizu Jin ,  Rui Yang ,  Fei Hu ,  Peng Wang ,  Yuqun Zeng ,  Yongshou Lin

IPC: H01M50/183 ,  H01M50/10 ,  H01M50/20

Abstract: The present disclosure provides a battery pack and a vehicle. The battery pack comprises a battery module, a box assembly and a first adhesive member. The battery module comprises first batteries arranged sequentially in a horizontal direction. The first battery comprises an electrode assembly and a case, and the electrode assembly is received in the case. The electrode assembly comprises a first electrode plate, a second electrode plate and a separator. The box assembly has a connection portion, and the connection portion is positioned at a side of the battery module in the vertical direction. An outer surface of the case comprises a first surface, and the first surface is connected with the connection portion via the first adhesive member. An area A of the first surface and an elastic modulus B of the first adhesive member satisfy a relationship: 0.02 cm2/MPa≤A/B≤9 cm2/MPa.

公开(公告)号：US10983154B2

公开(公告)日：2021-04-20

申请号：US16519127

申请日：2019-07-23

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Yuqun Zeng ,  Kai Wu ,  Jirong Huo ,  Le Chu ,  Yanhui Fu ,  Qiandeng Li

IPC: G01R31/00 ,  H02H1/00 ,  H02H3/16

Abstract: Disclosed are a load state detection circuit and method. A microcontroller is connected to a switch unit which is connected between a detecting power supply and a load to be tested. A voltage sampling point is formed at either terminal of the load to be tested, and the voltage sampling circuit is connected between the voltage sampling point and the microcontroller. The voltage sampling circuit is configured to sample a voltage at the voltage sampling point. The microcontroller is configured to connect the load to be tested and the detecting power supply by controlling the switch unit, and determine whether a fault exists in the load to be tested according to a received voltage at the voltage sampling point sampled by the voltage sampling circuit, before connecting the load to be tested with the drive power supply.

公开(公告)号：US20230352695A1

公开(公告)日：2023-11-02

申请号：US18338530

申请日：2023-06-21

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Yuqun Zeng

IPC: H01M4/66 ,  H01M4/38 ,  H01M10/054 ,  H01M4/62

CPC classification number: H01M4/668 ,  H01M4/381 ,  H01M10/054 ,  H01M4/661 ,  H01M4/667 ,  H01M4/625 ,  H01M4/623 ,  H01M2004/021

Abstract: A sodium metal battery and an electrochemical apparatus, the battery has a positive electrode sheet and a negative electrode sheet, the negative electrode sheet being a negative electrode current collector, and a sodium layer deposited in situ on the negative electrode current collector having a thickness of ≥30 nm after the battery is charged and discharged for the first time. After the battery cell is charged and discharged for the first time, the amount of residual sodium metal is sufficient to uniformly form a sodium deposition layer with a certain thickness on the surface of the negative electrode current collector. The higher nucleation energy required for the deposition of sodium onto the surface of the current collector during subsequent charge-discharge cycles is avoided, the overall deposition overpotential is reduced, and the deposition uniformity of sodium metal and the reversibility of the charge-discharge process are ensured.

公开(公告)号：US11791518B2

公开(公告)日：2023-10-17

申请号：US17113038

申请日：2020-12-05

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Yuqun Zeng ,  Xiaobo Chen ,  Peng Wang ,  Yao Li ,  Yongshou Lin

IPC: H01M50/342 ,  H01M10/613 ,  H01M10/625 ,  H01M10/6554 ,  H01M10/647 ,  H01M10/6556 ,  H01M50/209 ,  H01M50/358 ,  H01M50/204 ,  H01M50/375 ,  H01M50/609

CPC classification number: H01M50/3425 ,  H01M10/613 ,  H01M10/625 ,  H01M10/647 ,  H01M10/6554 ,  H01M10/6556 ,  H01M50/204 ,  H01M50/209 ,  H01M50/342 ,  H01M50/358 ,  H01M50/375 ,  H01M50/609 ,  H01M2200/10 ,  H01M2200/20 ,  H01M2220/20

Abstract: Embodiments of the present application provide a battery. The battery includes: a battery cell comprising a pressure relief mechanism, the pressure relief mechanism being arranged in a first wall of the battery cell and the pressure relief mechanism being configured, when an internal pressure or temperature of the battery cell reaches a threshold, to be actuated to release the internal pressure; and a thermal management component for containing a fluid to adjust the temperature of the battery cell; wherein a first surface of the thermal management component is attached to the first wall, and the thermal management component is configured to be capable of being damaged when the pressure relief mechanism is actuated, so that the fluid is discharged from inside of the thermal management component. According to the technical solutions of the embodiments of the present application, the safety of the battery can be enhanced.

公开(公告)号：US11360136B2

公开(公告)日：2022-06-14

申请号：US17204260

申请日：2021-03-17

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Yuqun Zeng ,  Kai Wu ,  Jirong Huo ,  Le Chu ,  Yanhui Fu ,  Qiandeng Li

IPC: G01R31/00 ,  H02H1/00 ,  H02H3/16

Abstract: Disclosed are a load state detection circuit and method. A microcontroller is connected to a switch unit which is connected between a detecting power supply and a load to be tested. A voltage sampling point is formed at either terminal of the load to be tested, and the voltage sampling circuit is connected between the voltage sampling point and the microcontroller. The voltage sampling circuit is configured to sample a voltage at the voltage sampling point. The microcontroller is configured to connect the load to be tested and the detecting power supply by controlling the switch unit, and determine whether a fault exists in the load to be tested according to a received voltage at the voltage sampling point sampled by the voltage sampling circuit, before connecting the load to be tested with the drive power supply.

公开(公告)号：US11329269B2

公开(公告)日：2022-05-10

申请号：US16424036

申请日：2019-05-28

Applicant: Contemporary Amperex Technology Co., Limited

Inventor： Yuqun Zeng ,  Yongshou Lin ,  Zhenhua Li ,  Haizu Jin ,  Xiaowen Zhang

IPC: H01M4/13 ,  H01M4/131 ,  H01M4/505 ,  H01M4/525 ,  H01M4/587 ,  H01M10/052 ,  H01M10/058 ,  H01M10/42 ,  H01M50/409 ,  H01M50/545 ,  H01M50/572

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.