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    Fast Charging Method and System, Terminal, and Charger
    1.
    发明公开
    Fast Charging Method and System, Terminal, and Charger 审中-公开

    公开(公告)号：US20230155392A1

    公开(公告)日：2023-05-18

    申请号：US18156173

    申请日：2023-01-18

    Applicant: Huawei Technologies Co., Ltd.

    Inventor： Xujun Liu ,  Ce Liu ,  Yanding Liu ,  Jinbo Ma ,  Pinghua Wang

    IPC: H02J7/00 ,  G01R31/36

    CPC classification number: H02J7/00 ,  H02J7/007184 ,  H02J7/00712 ,  G01R31/3648 ,  H02J7/0042 ,  H01M10/4257

    Abstract: A terminal and a fast charging method to fast charge the terminal, where the method includes sending, by the terminal, instruction information to a charger connected to the terminal in order to instruct the charger to adjust an output voltage and an output current, converting, by the terminal, the output voltage of the charger into 1/K times the output voltage, and converting the output current of the charger into K times the output current such that a charging circuit between two sides of a battery charges the battery with the 1/K times the output voltage and the K times the output current, where K is a conversion coefficient of a conversion circuit with a fixed conversion ratio in the terminal and is a constant value, and K is any real number greater than one.

    Battery, terminal, and charging system
    2.
    发明授权
    Battery, terminal, and charging system 有权

    公开(公告)号：US11444470B2

    公开(公告)日：2022-09-13

    申请号：US16935828

    申请日：2020-07-22

    Applicant: HUAWEI TECHNOLOGIES CO., LTD.

    Inventor： Xinyu Liu ,  Pinghua Wang ,  Ce Liu ,  Yanding Liu ,  Jinbo Ma

    IPC: H02J7/00 ,  H01M10/46 ,  H01M10/42 ,  H02J7/34

    Abstract: Example batteries, terminals, and charging systems are described. One example battery includes a battery charging port, a battery discharging port, a battery negative port, an overcurrent protection element, a protection integrated circuit, a control switch, and an electrochemical cell. The battery charging port is connected to a positive electrode of the electrochemical cell. The control switch is connected in series between a negative electrode of the electrochemical cell and the battery negative port. The protection integrated circuit is connected in parallel to two ends of the electrochemical cell. The protection integrated circuit is further connected to the control switch so as to send a control signal to the control switch. In addition, the overcurrent protection element is connected in series between the battery discharging port and the positive electrode of the electrochemical cell. The battery provided in the present application has both a charging path and a discharging path.

    Fast charging method, terminal, charger, and system with open loop control
    3.
    发明授权
    Fast charging method, terminal, charger, and system with open loop control 有权

    公开(公告)号：US11362527B2

    公开(公告)日：2022-06-14

    申请号：US16197471

    申请日：2018-11-21

    Applicant: HUAWEI TECHNOLOGIES CO., LTD.

    Inventor： Ce Liu ,  Xujun Liu ,  Yanding Liu ,  Yunfeng Liu ,  Jinbo Ma

    IPC: H02J7/00 ,  H01M10/44

    Abstract: A charging method, a terminal, a charger, and a system, includes: obtaining, by a terminal, a charging mode supported by a charger connected to the terminal; when the charging mode supported by the charger includes an open-loop fast charging mode, detecting, by the terminal, whether both the terminal and the charger are in an open loop state; when both the terminal and the charger are in the open loop state, sending, by the terminal, an open-loop fast charging instruction to the charger; and receiving, by the terminal, a voltage and a current that are transmitted by the charger according to the open-loop fast charging instruction, and performing charging in the open-loop fast charging mode. When determining that the charger supports charging in the open-loop fast charging mode, the terminal is adjusted to the open loop state to perform charging, so as to shorten a charging time and improve user experience.

    Battery, terminal, and charging system
    5.
    发明授权
    Battery, terminal, and charging system 有权

    公开(公告)号：US10797493B2

    公开(公告)日：2020-10-06

    申请号：US16359061

    申请日：2019-03-20

    Applicant: HUAWEI TECHNOLOGIES CO., LTD.

    Inventor： Xinyu Liu ,  Pinghua Wang ,  Ce Liu ,  Yanding Liu ,  Jinbo Ma

    IPC: H02J7/00 ,  H01M10/46 ,  H01M10/42 ,  H02J7/34

    Abstract: An example battery, a terminal, or a charging system can include a battery charging port, a battery discharging port, a battery negative port, an overcurrent protection element, a protection integrated circuit, a control switch, and an electrochemical cell. The battery charging port is connected to a positive electrode of the electrochemical cell, the control switch is connected in series between a negative electrode of the electrochemical cell and the battery negative port, the protection integrated circuit is connected in parallel to two ends of the electrochemical cell, and the protection integrated circuit is further connected to the control switch, so as to send a control signal to the control switch. In addition, the overcurrent protection element is connected in series between the battery discharging port and the positive electrode of the electrochemical cell.

    Resonant power converter and frequency tracking method for resonant power converter
    6.
    发明授权
    Resonant power converter and frequency tracking method for resonant power converter 有权

    公开(公告)号：US10439501B2

    公开(公告)日：2019-10-08

    申请号：US16172082

    申请日：2018-10-26

    Applicant: Huawei Technologies Co., Ltd.

    Inventor： Ce Liu ,  Zhixian Wu

    IPC: H02M3/335 ,  H02M1/08 ,  H02M1/00

    Abstract: A resonant power converter and a frequency tracking method for a resonant power converter are disclosed to determine a resonant status of the resonant power converter by sampling a secondary current, thereby controlling frequency of a drive signal. Therefore, the frequency of the drive signal tracks resonant frequency of the resonant power converter. The resonant power converter includes an inverter branch, which connected to the inverter branch, a transformer connected to the resonant branch, and a rectification and filtering branch connected to the transformer. A primary side of the transformer is connected to the resonant branch, and a secondary side of the transformer is connected to the rectification and filtering branch. A detection branch is connected to both the secondary side of the transformer and the rectification and filtering branch.

    Fast Charging Method and System, Terminal, and Charger
    8.
    发明申请
    Fast Charging Method and System, Terminal, and Charger 审中-公开

    公开(公告)号：US20200343756A1

    公开(公告)日：2020-10-29

    申请号：US16924509

    申请日：2020-07-09

    Applicant: Huawei Technologies Co., Ltd.

    Inventor： Xujun Liu ,  Ce Liu ,  Yanding Liu ,  Jinbo Ma ,  Pinghua Wang

    IPC: H02J7/00 ,  G01R31/36 ,  H01M10/42

    Abstract: A terminal and a fast charging method includes sending, by the terminal, instruction information to a charger connected to the terminal in order to instruct the charger to adjust an output voltage and an output current, converting, by the terminal, the output voltage of the charger into 1/K times the output voltage, and converting the output current of the charger into K times the output current such that a charging circuit between two sides of a battery charges the battery with the 1/K times the output voltage and the K times the output current, where K is a conversion coefficient of a conversion circuit with a fixed conversion ratio in the terminal and is a constant value, and K is any real number greater than one.

    Charging Circuit, Terminal, and Charging System
    9.
    发明申请
    Charging Circuit, Terminal, and Charging System 审中-公开

    公开(公告)号：US20190222041A1

    公开(公告)日：2019-07-18

    申请号：US16359451

    申请日：2019-03-20

    Applicant: Huawei Technologies Co., Ltd.

    Inventor： Xinyu Liu ,  Yanding Liu ,  Ce Liu ,  Pinghua Wang ,  Jinbo Ma

    IPC: H02J7/00

    Abstract: A charging circuit in a terminal, or a charging system, is respectively coupled to a charger, a terminal load, and a battery. The charging circuit includes a first adjustment circuit, a current detection circuit, a voltage detection circuit, and a control circuit. A first end of the first adjustment circuit is coupled to the charger, a second end of the first adjustment circuit is further coupled to the terminal load, a third end of the first adjustment circuit is coupled to the control circuit, and a second end of the current detection circuit is coupled to a positive electrode of the battery.

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