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    Traction battery self-heating control method and device
    5.
    发明授权
    Traction battery self-heating control method and device 有权

    公开(公告)号：US11605848B2

    公开(公告)日：2023-03-14

    申请号：US17877208

    申请日：2022-07-29

    Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

    Inventor： Xiaojian Huang ,  Zhimin Dan ,  Bao Li ,  Xiyang Zuo

    IPC: H01M10/63 ,  H01M10/615 ,  H01M10/625 ,  H01M10/48 ,  H02P29/66 ,  G01K3/00 ,  G01K3/10 ,  G01R31/34 ,  B60L58/27

    Abstract: Disclosed is a traction battery self-heating control method and a device. Acquiring a second temperature of a rotor at a current sampling time according to system parameters and a first temperature of the rotor at a previous sampling time, and estimating a third temperature of the rotor at a next sampling time according to the first temperature and the second temperature, and stopping the self-heating of the traction battery when the third temperature reaches a demagnetization temperature of the rotor. Whether to stop the self-heating of the traction battery is determined by estimating a rotor temperature under the self-heating condition, and comparing the rotor temperature with the demagnetization temperature of the rotor, and thus the self-heating control of the traction battery is realized.

    METHOD, APPARATUS, DEVICE AND MEDIUM FOR ELECTRIC ENERGY TRANSMISSION
    6.
    发明申请
    METHOD, APPARATUS, DEVICE AND MEDIUM FOR ELECTRIC ENERGY TRANSMISSION 有权

    公开(公告)号：US20230061401A1

    公开(公告)日：2023-03-02

    申请号：US17712085

    申请日：2022-04-02

    Applicant: Contemporary Amperex Technology Co., Limited

    Inventor： Zhanliang LI ,  Yu Yan ,  Zhimin Dan ,  Miaomiao Zhang

    IPC: H02J3/32 ,  H02J7/00 ,  H02J7/02 ,  B60L53/80 ,  B60S5/06

    Abstract: The embodiments of the present application provide a method, apparatus, device, and medium for electric energy transmission. The method includes: determining a resource value of a unit of electric energy of a grid at a target time; under a condition that the resource value is greater than or equal to a first resource threshold, determining a number of available batteries in a battery swapping station and an ordered number of batteries in the battery swapping station within a target time period; and under a condition that the number of available batteries is greater than a number of reserved batteries, controlling a charging and discharging module to transmit electric energy of a first battery in the battery swapping station to the grid.

    CHARGING CONTROL METHOD AND APPARATUS, BATTERY MANAGEMENT SYSTEM AND READABLE STORAGE MEDIUM
    7.
    发明申请
    CHARGING CONTROL METHOD AND APPARATUS, BATTERY MANAGEMENT SYSTEM AND READABLE STORAGE MEDIUM 有权

    公开(公告)号：US20220407338A1

    公开(公告)日：2022-12-22

    申请号：US17561239

    申请日：2021-12-23

    Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

    Inventor： Zhanliang Li ,  Yu Yan ,  Zhimin Dan ,  Shuyun Xiong ,  Weiping Sun ,  Xiyang Zuo

    IPC: H02J7/00 ,  G01R31/382

    Abstract: The present application provides a charging control method and apparatus, a battery management system and a readable storage medium. The charging control method includes: obtaining a battery temperature and a battery state of charge; determining a pulse charging frequency according to the battery temperature, the battery state of charge and a pre-calibrated corresponding relationship; obtaining a preset waveform characteristic of a pulse charging waveform; where the waveform characteristic includes a ratio range of an area of a positive pulse waveform to an area of a negative pulse waveform in each pulse cycle of the pulse charging waveform; and generating a charging request according to the pulse charging frequency and the waveform characteristic and transmitting the charging request to a charging device. The method is used for improving charging stability and safety of a battery.

    Heating method for rechargeable battery, control unit and heating circuit
    8.
    发明授权
    Heating method for rechargeable battery, control unit and heating circuit 有权

    公开(公告)号：US11515588B2

    公开(公告)日：2022-11-29

    申请号：US16860408

    申请日：2020-04-28

    Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

    Inventor： Xinxin Du ,  Zhimin Dan ,  Fuping Luo ,  Shengwei Wang ,  Tiancong Wang ,  Xiyang Zuo

    IPC: H01M10/637 ,  H01M10/615 ,  H02J7/00

    Abstract: Disclosed are a heating method for a rechargeable battery, a control unit and a heating circuit. The heating method comprises: determining a frequency value of a pulse current for heating the rechargeable battery in response to a heating command of the rechargeable battery; determining a current value of the pulse current according to the frequency value and an acquired state parameter of the rechargeable battery; judging whether the current value satisfies a preset heating demand; if the current value satisfies the heating demand, generating the pulse current under control according to the frequency value; if the current value does not satisfy the heating demand, re-determining the frequency value and the current value of the pulse current. The embodiments of the present disclosure further provide a control unit and a heating circuit.

    Control method and apparatus, power system, and electric vehicle
    9.
    发明授权
    Control method and apparatus, power system, and electric vehicle 有权

    公开(公告)号：US11418143B2

    公开(公告)日：2022-08-16

    申请号：US17529917

    申请日：2021-11-18

    Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

    Inventor： Xiaojian Huang ,  Zhimin Dan ,  Xianxi Pan ,  Xiyang Zuo

    IPC: H02P29/60 ,  B60L50/51 ,  H02P27/06

    Abstract: The present application provides a control method, an apparatus, a power system, and an electric vehicle, relating to the field of electric vehicles. The method includes: obtaining a battery cell temperature of a power battery, and sending a first control signal to an inverter when the battery cell temperature meets a preset power battery heating condition, where the first control signal is configured to control the inverter to convert a current provided by the power battery into an alternating current with a randomly changing frequency, and the alternating current with a randomly changing frequency is configured to supply power to a permanent magnet motor. New frequency components may be introduced to evenly distribute originally concentrated radial electromagnetic forces to an entire stator, thereby reducing vibration noises during the heating process of the power battery.

    System and method for providing a constant power source
    10.
    发明授权
    System and method for providing a constant power source 有权

    公开(公告)号：US11303215B2

    公开(公告)日：2022-04-12

    申请号：US17137165

    申请日：2020-12-29

    Applicant: Contemporary Amperex Technology Co., Limited

    Inventor： Liansong Wang ,  Zhimin Dan ,  Yizhen Hou ,  Fangjie Zhou ,  Changjian Liu

    IPC: H02M3/335 ,  H02J7/00

    Abstract: The present application discloses a system and method for providing a constant power source. The system includes: a main control module configured to receive a wake-up time and send the wake-up time to a timer device; a timer power supply module configured to supply power to the timer device according to electric energy in a high-voltage battery pack; a high-voltage power supply module configured to supply power to a power conversion module according to the electric energy in the high-voltage battery pack; the timer device configured to set a wake-up clock according to the wake-up time, start timing when a battery management system (BMS) enters into sleep, and send a discharge instruction to the high-voltage battery pack when the timing reaches the wake-up time; the power conversion module configured to convert high-voltage electric energy output from the high-voltage battery pack into low-voltage electric energy and supply power to the BMS.

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