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    Fast changing method and system, terminal, and charger
    1.
    发明授权
    Fast changing method and system, terminal, and charger 有权

    公开(公告)号：US10734830B2

    公开(公告)日：2020-08-04

    申请号：US16148305

    申请日：2018-10-01

    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 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.

    Fast Charging Method and System, Terminal, and Charger
    3.
    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.

    Method and apparatus for driving power switch tube
    4.
    发明授权
    Method and apparatus for driving power switch tube 有权

    公开(公告)号：US10411700B2

    公开(公告)日：2019-09-10

    申请号：US15595569

    申请日：2017-05-15

    Applicant: Huawei Technologies Co., Ltd.

    Inventor： Xujun Liu

    IPC: H03K17/691 ,  H02M1/088 ,  H02M1/08 ,  H02M1/096 ,  H03K17/288

    Abstract: A method and an apparatus for driving a power switch tube. The apparatus includes an input unit, a drive unit, a transformer and a power switch tube. The input unit is connected to the drive unit, which is configured to input a group of drive signals, and the group of drive signals includes four drive signals, where the first drive signal and the second are complementary signals, and a dead time exists; the third drive signal and the fourth are complementary signals, and a dead time exists; the phase difference between the first drive signal and the third is 180 degrees, and the phase difference between the second drive signal and the fourth is 180 degrees; the drive unit is configured to power on a field winding of the transformer; and the transformer provides a drive voltage signal for the power switch tube.

    Method and apparatus for driving power switch tube
    5.
    发明授权
    Method and apparatus for driving power switch tube 有权

    公开(公告)号：US09680467B2

    公开(公告)日：2017-06-13

    申请号：US14224295

    申请日：2014-03-25

    Applicant: Huawei Technologies Co., Ltd.

    Inventor： Xujun Liu

    IPC: H03K17/691 ,  H02M1/088 ,  H02M1/08

    CPC classification number: H03K17/691 ,  H02M1/08 ,  H02M1/088 ,  H02M1/096 ,  H03K17/288 ,  Y10T307/944

    Abstract: A method and an apparatus for driving a power switch tube. The apparatus includes an input unit, a drive unit, a transformer and a power switch tube. The input unit is connected to the drive unit, which is configured to input a group of drive signals, and the group of drive signals includes four drive signals, where the first drive signal and the second are complementary signals, and a dead time exists; the third drive signal and the fourth are complementary signals, and a dead time exists; the phase difference between the first drive signal and the third is 180 degrees, and the phase difference between the second drive signal and the fourth is 180 degrees; the drive unit is configured to power on a field winding of the transformer; and the transformer provides a drive voltage signal for the power switch tube.

    Fast Charging Method and System, Terminal, and Charger
    6.
    发明申请
    Fast Charging Method and System, Terminal, and Charger 审中-公开

    公开(公告)号：US20190036354A1

    公开(公告)日：2019-01-31

    申请号：US16148305

    申请日：2018-10-01

    Applicant: Huawei Technologies Co., Ltd.

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

    IPC: H02J7/00 ,  G01R31/36

    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.

    Fast charging method and system, terminal, and charger
    8.
    发明授权
    Fast charging method and system, terminal, and charger 有权

    公开(公告)号：US11581745B2

    公开(公告)日：2023-02-14

    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.

    Fast Charging Method and System, Terminal, and Charger
    9.
    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.

    Fast charging method, terminal, charger, and system with open loop control
    10.
    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.

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