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    Motor driving circuit and motor component
    11.
    发明授权
    Motor driving circuit and motor component 有权

    公开(公告)号：US10205412B2

    公开(公告)日：2019-02-12

    申请号：US15231115

    申请日：2016-08-08

    Applicant: Johnson Electric S.A.

    Inventor： Chi Ping Sun ,  Shing Hin Yeung ,  Fei Xin ,  Xiu Wen Yang ,  Shu Juan Huang ,  Yun Long Jiang ,  Yue Li ,  Bao Ting Liu ,  En Hui Wang ,  Li Sheng Liu ,  Yan Yun Cui

    IPC: H02P27/16 ,  H02K3/28 ,  H02P25/10 ,  H05B39/08 ,  H02P6/16 ,  H02K1/27 ,  H02K11/215 ,  H02K21/00 ,  H02P6/20 ,  H02P7/295 ,  H02P6/30 ,  H02P7/03

    Abstract: A motor driving circuit and a motor component are provided. The motor driving circuit includes a bidirectional alternating current switch connected in series with a motor across two terminals of an external alternating current power supply, where the bidirectional alternating current switch is connected between a first node and a second node; a rectifying circuit; a magnetic sensor, configured to detect a magnetic field of a rotor and output a corresponding magnetic inductive signal; a first voltage drop circuit and a second voltage drop circuit connected in series between the first input terminal of the rectifying circuit and the first node, where there is a third node between the first voltage drop circuit and the second voltage drop circuit, and the first voltage drop circuit is connected between the first node and the third node; a switch circuit connected between the third node and a control terminal of the bidirectional alternating current switch, where the switch circuit includes a first terminal, a second terminal, a control terminal and a switch arranged between the first terminal and the second terminal; and a switch control circuit connected between the control terminal of the switch circuit and an output terminal of the magnetic sensor.

    Step-down circuit
    14.
    发明授权
    Step-down circuit 有权

    公开(公告)号：US09893508B2

    公开(公告)日：2018-02-13

    申请号：US14805040

    申请日：2015-07-21

    Applicant: Johnson Electric S.A.

    Inventor： Chi Ping Sun ,  Hai Bo Jiang ,  Qiu Bao Wang ,  Yun Long Jiang ,  Yan Yun Cui

    IPC: H02H3/08 ,  H02H3/087 ,  H02H3/20

    CPC classification number: H02H3/08 ,  H02H3/087 ,  H02H3/202

    Abstract: A step-down circuit has a switch connected in series between a direct current power supply and a load. A switch control circuit is configured to turn the switch off when the voltage across the load is higher than a predetermined first threshold and turn the switch on when the voltage across the load is lower than the first threshold. An energy storage unit is charged by the power supply when the switch is on and supply power to the load when the switch is off. An overcurrent protection circuit turns the switch off when the input current of the switch is higher than a predetermined second threshold.

    Control circuit for a DC motor
    19.
    发明授权
    Control circuit for a DC motor 有权
    直流电机的控制电路

    公开(公告)号：US09385640B2

    公开(公告)日：2016-07-05

    申请号：US14555394

    申请日：2014-11-26

    Applicant: Johnson Electric S.A.

    Inventor： Chi Ping Sun ,  Fei Xin ,  Xiu Wen Yang ,  Shing Hin Yeung ,  Yun Long Jiang ,  Yan Yun Cui ,  Sin Sang Wong ,  Zhu Qing Yi

    IPC: H02P6/18 ,  H02P6/00 ,  H02P3/12 ,  H02P7/285

    CPC classification number: H02P6/06 ,  H02P3/12 ,  H02P7/285

    Abstract: A control circuit for a DC motor, has: a first and second input ports for connection to a DC source; a H-bridge driving circuit, having first and second switches connected in series between the input ports, and third and fourth switches connected in series between the input ports, a first output port between the first and second switches and a second output port between the third and fourth switches, and a shunt circuit and/or a blocking circuit. The motor is connected between the first and second output ports. The shunt circuit is connected between the first second output ports and has a resistance that will decrease in response to BEMF generated by the motor. The blocking circuit is connected in series with the motor between the output ports and has a resistance that increases in response to BEMF generated by the motor.

    Abstract translation: 一种用于直流电动机的控制电路，具有用于连接到直流电源的第一和第二输入端口; H桥驱动电路，具有串联连接在输入端口之间的第一和第二开关以及串联连接在输入端口之间的第三和第四开关，第一和第二开关之间的第一输出端口和位于第一和第二开关之间的第二输出端口 第三和第四开关，以及分流电路和/或阻塞电路。 电机连接在第一和第二输出端口之间。 分流电路连接在第一个第二输出端口之间，并具有响应于电动机产生的BEMF而减小的电阻。 阻塞电路与输出端口之间的电动机串联连接，并具有响应于电动机产生的BEMF而增加的电阻。

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