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    CURRENT SAMPLING METHOD AND CURRENT SAMPLING CIRCUIT
    61.
    发明申请
    CURRENT SAMPLING METHOD AND CURRENT SAMPLING CIRCUIT 有权

    公开(公告)号：US20210293860A1

    公开(公告)日：2021-09-23

    申请号：US17057433

    申请日：2019-12-04

    Applicant: Contemporary Amperex Technology Co., Limited

    Inventor： Yizhen HOU ,  Zhimin DAN ,  Wei ZHANG ,  Jinbo CAI ,  Xiong ZHENG

    IPC: G01R19/25 ,  G01R19/32 ,  G01R19/00

    Abstract: The present disclosure discloses a current sampling method and a current sampling circuit. The method comprises: obtaining a detected temperature of each semiconductor switch device of a plurality of parallel semiconductor switch devices; determining that the plurality of parallel semiconductor switch devices are in a current equalization state based on the detected temperature of each semiconductor switch device; obtaining an equalized current flowing through a target semiconductor switch device in the current equalization state, the target semiconductor switch device being any one of the plurality of parallel semiconductor switch devices; determining a total current of a main circuit connected to the plurality of parallel semiconductor switch devices according to the equalized current.

    RELAY HOLDING CIRCUIT AND BATTERY MANAGEMENT SYSTEM
    62.
    发明申请
    RELAY HOLDING CIRCUIT AND BATTERY MANAGEMENT SYSTEM 有权

    公开(公告)号：US20210027961A1

    公开(公告)日：2021-01-28

    申请号：US16981260

    申请日：2019-11-15

    Applicant: Contemporary Amperex Technology Co., Limited

    Inventor： Zhimin DAN ,  Delong SHI ,  Yizhen HOU ,  Wei ZHANG ,  Liansong WANG

    IPC: H01H47/32 ,  B60L3/00 ,  B60L50/60 ,  H01H47/18 ,  H01H47/00

    Abstract: The embodiments of the present disclosure disclose a relay holding circuit and a battery management system. the relay holding circuit may include: a high-voltage isolated power source, a power source driving module, and a microprocessor of a battery management system; the high-voltage isolated power source may be respectively connected to two electrodes of a battery pack, an output terminal of the power source driving module, the microprocessor, and a first terminal of a first switching device; an input terminal of the power source driving module may be connected to the microprocessor; the microprocessor may be further connected to a primary battery, the microprocessor may output a low-level signal to the power source driving module when the primary battery supplies power abnormally.

    WIRELESS RADIO FREQUENCY COMMUNICATION SYSTEM
    65.
    发明申请
    WIRELESS RADIO FREQUENCY COMMUNICATION SYSTEM 审中-公开

    公开(公告)号：US20200083917A1

    公开(公告)日：2020-03-12

    申请号：US16542401

    申请日：2019-08-16

    Applicant: Contemporary Amperex Technology Co., Limited

    Inventor： Yizhen HOU ,  Zhimin DAN ,  Wei ZHANG ,  Jiechao LUO ,  Wenbin LU ,  Jia XU ,  Teng YU

    IPC: H04B1/04 ,  H04B1/00 ,  H04B1/10 ,  H01Q1/52 ,  H03H7/01

    Abstract: A system comprises an antenna, a port converting device, an information transmission device, a shield case, and a reference voltage end; wherein the antenna, the port converting device, and the information transmission device are connected sequentially, and the information transmission device is disposed within the shield case, and both the shield case and the port converting device is connected with the reference voltage end; the antenna is configured for a conversion between a radio frequency signal and a single-ended signal; the port converting device is configured for a conversion between the single-ended signal and target differential mode signals; the information transmission device is configured to transmit and process the target differential mode signals; and parameters of components in the port converting device is determined according to a preset communication frequency and a voltage amplitude and phase of a differential mode signal.

    INSULATION DETECTION CIRCUIT AND METHOD, AND BATTERY MANAGEMENT SYSTEM
    66.
    发明申请
    INSULATION DETECTION CIRCUIT AND METHOD, AND BATTERY MANAGEMENT SYSTEM 审中-公开

    公开(公告)号：US20190237815A1

    公开(公告)日：2019-08-01

    申请号：US16245198

    申请日：2019-01-10

    Applicant: Contemporary Amperex Technology Co., Limited

    Inventor： Zhimin DAN ,  Meng Li ,  Yizhen Hou ,  Wei Zhang ,  Lidan Yan

    IPC: H01M10/42 ,  G01R27/02 ,  G01R31/382 ,  H01M10/48 ,  G01R31/396

    Abstract: The present disclosure provides an insulation detection circuit and method, and a battery management system. The circuit includes a first isolation module, a voltage division module, a signal generation module, first and second sampling points and a processor. A first end of the first isolation module is connected to a power battery, and a second end of the first isolation module is connected to the second sampling point. The signal generation module is connected to the first sampling point and configured to inject an AC signal into the power battery and provide the first sampling point with a first sampled signal. A first end of the voltage division module is connected to the first sampling point, and a second end of the voltage division module is connected to the second sampling point. The processor is configured to calculate an insulation resistance of the power battery.

    BATTERY HEATING SYSTEM, BATTERY PACK, AND ELECTRICAL APPARATUS
    67.
    发明申请
    BATTERY HEATING SYSTEM, BATTERY PACK, AND ELECTRICAL APPARATUS 有权

    公开(公告)号：US20240429483A1

    公开(公告)日：2024-12-26

    申请号：US18168875

    申请日：2022-06-14

    Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

    Inventor： Yuanmiao ZHAO ,  Zhimin DAN ,  Zhanliang LI ,  Xiaojian HUANG

    IPC: H01M10/637 ,  H01M10/42 ,  H01M10/44 ,  H01M10/48 ,  H01M10/615

    Abstract: A battery heating system includes a switch assembly, and the switch assembly includes a first switch, a second switch, and a third switch. When the first switch is turned on and the second switch and the third switch are turned off, the first battery group and the second battery group are arranged in series connection and connected to a charging and discharging apparatus, for charging or discharging the first battery group and the second battery group after being connected in series. When the first switch is turned off and the second switch and the third switch are turned on, the first battery group and the second battery group are respectively connected to a battery heating apparatus to form a first loop and a second loop, and the first loop and the second loop are used for heating the first battery group and the second battery group.

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