公开(公告)号：US20220013848A1

公开(公告)日：2022-01-13

申请号：US17113010

申请日：2020-12-05

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Yuqun ZENG ,  Jianxiong YANG ,  Peng WANG ,  Zhijun GUO ,  Quankun LI ,  Zhanyu SUN

IPC: H01M50/30 ,  H01M10/42 ,  H01M10/613 ,  H01M10/647 ,  H01M50/249 ,  H01M50/271

Abstract: Disclosed are a battery box, a battery cell, a battery, and a method and apparatus for preparing the battery box. The battery box includes a pressure relief region including a first recess arranged at an inner surface of the battery box and a second recess arranged at an outer surface of the battery box, the first recess being arranged opposite to the second recess, wherein a third recess is provided at a bottom wall of the first recess and/or a bottom wall of the second recess, and the pressure relief region is configured to fracture at the third recess, when an internal pressure of the battery box reaches a threshold, to relieve the internal pressure. According to the battery box, the battery cell, the battery, and the method and apparatus for preparing the battery box disclosed in the present application, the pressure relief region is easy to machine.

公开(公告)号：US20210263580A1

公开(公告)日：2021-08-26

申请号：US17315260

申请日：2021-05-07

Applicant: Contemporary Amperex Technology Co., Limited

Inventor： Yuqun ZENG ,  Kai Wu ,  Le Chu ,  Jianwei Zhuo ,  Qiandeng Li

IPC: G06F1/3225 ,  G06F1/26 ,  G06F1/30 ,  G06F1/3234

Abstract: The present application provides a method for controlling a power-down detection circuit, a controller and a computer readable storage medium. The method includes: receiving, by a controller of a power-down detection circuit, a power-down signal, wherein the power-down signal is sent from a power-down detection sub-circuit of the power-down detection circuit when it is determined by the power-down detection sub-circuit that an output voltage of a low-voltage side power supply of the power-down detection circuit is smaller than a threshold, and wherein the power-down detection sub-circuit and the controller are powered by the low-voltage side power supply; controlling, by the controller, a memory of the power-down detection circuit to record fault information, wherein the fault information comprises current information of a high voltage bus sensed by a high-voltage side current sensor of the power-down detection circuit; and performing, by the controller, a fault diagnosis based on the fault information.

公开(公告)号：US20210111456A1

公开(公告)日：2021-04-15

申请号：US17129572

申请日：2020-12-21

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

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：US20200212439A1

公开(公告)日：2020-07-02

申请号：US16723578

申请日：2019-12-20

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Yuqun ZENG ,  Chengdu Liang ,  Yuzhen Zhao ,  Qisen Huang ,  Yingjie Guan ,  Yan Wen

IPC: H01M4/38 ,  H01M4/134

Abstract: The present disclosure provides a negative electrode active material, a battery and a device. The negative electrode active material comprises a first silicon oxide and a second silicon oxide, wherein, a ratio of a particle diameter Dn10 of the first silicon oxide to a particle diameter Dn10 of the second silicon oxide is 8˜25, the particle diameter Dn10 of the first silicon oxide is 1.0 μm˜5.0 μm, the particle diameter Dn10 of the second silicon oxide is 0.05 μm˜0.50 μm. By selecting two kinds of silicon oxides with specific ranges of Dn10 to match with each other, the present disclosure controls the thickness rebound of negative electrode plate, ensures good electrical contact between the negative electrode active material particles, in turn is beneficial to improve the cycle stability and the cycle-life of the battery.

公开(公告)号：US20230369591A1

公开(公告)日：2023-11-16

申请号：US18349219

申请日：2023-07-10

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Yuqun ZENG ,  Baida DENG ,  Meng KANG ,  Erling LI ,  Libing HE

IPC: H01M4/583 ,  H01M4/04 ,  H01M4/62

CPC classification number: H01M4/583 ,  H01M4/0471 ,  H01M4/622 ,  H01M4/625 ,  H01M2004/021

Abstract: This application discloses a negative-electrode active material and a preparation method thereof, a secondary battery, and a battery module, a battery pack, and an apparatus that include such secondary battery. The negative-electrode active material includes a core and a coating layer covering at least part of a surface of the core, where the core includes artificial graphite, the coating layer includes amorphous carbon, a volume-based particle size distribution of the negative-electrode active material satisfies Dv99≤24 μm, a volume-based median particle size Dv50 of the negative-electrode active material satisfies 8 μm≤Dv50≤15 μm, Dv99 is a particle size corresponding to a cumulative volume distribution percentage of the negative-electrode active material reaching 99%, and Dv50 is a particle size corresponding to a cumulative volume distribution percentage of the negative-electrode active material reaching 50%.

公开(公告)号：US20230299419A1

公开(公告)日：2023-09-21

申请号：US18202361

申请日：2023-05-26

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Yuqun ZENG ,  Chuying OUYANG ,  Chengdong SUN ,  Yi ZHENG ,  Haiyang KANG

IPC: H01M50/414 ,  H01M50/457 ,  H01M50/446 ,  H01M50/403 ,  H01M50/417 ,  H01M50/431 ,  H01M10/0525

CPC classification number: H01M50/414 ,  H01M50/457 ,  H01M50/446 ,  H01M50/403 ,  H01M50/417 ,  H01M50/431 ,  H01M10/0525

Abstract: The present application provides a separator, a secondary battery, a battery module, a battery pack, and a power consumption apparatus. The separator may include a porous base film and a bonding layer coated on one or both faces of the porous base film. The bonding layer may be composed of ethylene carbonate and an optional nucleating agent.

公开(公告)号：US20220416244A1

公开(公告)日：2022-12-29

申请号：US17822260

申请日：2022-08-25

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Yuqun ZENG ,  Baida DENG ,  Meng KANG ,  Erling LI ,  Libing HE

IPC: H01M4/583 ,  H01M4/04 ,  H01M4/62

Abstract: This application discloses a negative-electrode active material and a preparation method thereof, a secondary battery, and a battery module, a battery pack, and an apparatus that include such secondary battery. The negative-electrode active material includes a core and a coating layer covering at least part of a surface of the core, where the core includes artificial graphite, the coating layer includes amorphous carbon, a volume-based particle size distribution of the negative-electrode active material satisfies Dv99≤24 μm, a volume-based median particle size Dv50 of the negative-electrode active material satisfies 8 μm≤Dv≤15 μm, Dv99 is a particle size corresponding to a cumulative volume distribution percentage of the negative-electrode active material reaching 99%, and WO is a particle size corresponding to a cumulative volume distribution percentage of the negative-electrode active material reaching 50%.

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：US20210376428A1

公开(公告)日：2021-12-02

申请号：US17130717

申请日：2020-12-22

Applicant: Contemporary Amperex Technology Co., Limited

Inventor： Chengdu LIANG ,  Haizu JIN ,  Hu XU ,  Yuqun ZENG

IPC: H01M50/538 ,  H01M10/0587 ,  H01M50/54 ,  H01M10/0525

Abstract: An electrode assembly as provided includes a plurality of first electrode plates and at least one second electrode plate. The plurality of first electrode plates and the at least one second electrode plate are wound around a winding axis to form a winding structure. In the winding structure, the plurality of first electrode plates and the second electrode plate are arranged in a superimposing manner along a direction vertical to the winding axis. Each first electrode plate includes a first current collector and a first active substance layer, and the first current collector includes a first main body portion and a first tab which protrudes from the first main body portion along the direction of the winding axis; wherein each first tab and the first main body portion are arranged in parallel along the winding axis.

公开(公告)号：US20210039498A1

公开(公告)日：2021-02-11

申请号：US17083330

申请日：2020-10-29

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.