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公开(公告)号：US20180019584A1
公开(公告)日：2018-01-18
申请号：US15586952
申请日：2017-05-04
Applicant: Chengli LI
Inventor： Chengli LI , Guolan Yue
CPC classification number: H02H3/044 , G01R31/025 , G01R31/42 , H02H1/0007 , H02H1/06 , H02H3/08
Abstract: A leakage current detection device includes a switching module coupled between power input and output terminals, for controlling the electrical connection between the input and output terminals; a leakage current detection module, including a switch driving component, configured to control the switching module based on working periods of the switch driving component and based on whether a leakage current signal is detected; and a first self testing module, coupled to the leakage current detection module, for periodically generating a self testing pulse signal as a simulated leakage current signal. The first self testing module includes: a periodic timing circuit and a self testing pulse signal generating circuit coupled to each other, where the periodic timing circuit controls the period of the self testing pulse signal. The device provides enhanced safety protection.
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公开(公告)号：US09871366B1
公开(公告)日：2018-01-16
申请号：US15586952
申请日：2017-05-04
Applicant: Chengli Li
Inventor： Chengli Li , Guolan Yue
CPC classification number: H02H3/044 , G01R31/025 , G01R31/42 , H02H1/0007 , H02H1/06 , H02H3/08
Abstract: A leakage current detection device includes a switching module coupled between power input and output terminals, for controlling the electrical connection between the input and output terminals; a leakage current detection module, including a switch driving component, configured to control the switching module based on working periods of the switch driving component and based on whether a leakage current signal is detected; and a first self testing module, coupled to the leakage current detection module, for periodically generating a self testing pulse signal as a simulated leakage current signal. The first self testing module includes: a periodic timing circuit and a self testing pulse signal generating circuit coupled to each other, where the periodic timing circuit controls the period of the self testing pulse signal. The device provides enhanced safety protection.
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3.发明授权公开(公告)号：US12237660B2
公开(公告)日：2025-02-25
申请号：US17934552
申请日：2022-09-22
Applicant: Chengli Li
Inventor： Long Chen , Chengli Li , Guolan Yue
Abstract: A leakage current detection and interruption device includes a switch module configured to control electrical connection between input and output ends of power supply lines; a leakage current detection module configured to generate a leakage fault signal in response to a leakage current in the power supply lines; a leakage-responsive drive module configured to drive the switch module to disconnect the electrical connection in response to the leakage fault signal; a fault-responsive drive module configured to drive the switch module to disconnect the electrical connection in response to a fault in the leakage-responsive drive module; and a self-test module configured to generate a self-test signal and to generate a self-test fault signal in response to a fault in the leakage current detection module and/or the leakage-responsive drive module. By providing the fault-responsive drive module, the device can automatically disconnect the electrical power when the leakage-responsive drive module has a fault.
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4.发明授权公开(公告)号：US09312680B2
公开(公告)日：2016-04-12
申请号：US14462822
申请日：2014-08-19
Applicant: Chengli Li
Inventor： Chengli Li , Guolan Yue
CPC classification number: H02H5/047 , G01R31/025 , H02H3/08 , H02H3/105 , H02H3/16 , H02H3/162 , H02H3/334 , H02H5/04
Abstract: A leakage current detection interrupter (LCDI) with self-testing function, which includes: a leakage current detection unit, including multiple current-carrying wires and at least one leakage current detection wire for detecting a leakage current of the current-carrying wires; a phase protection unit, coupled to at least one current-carrying wire on the input side of the multiple current-carrying wires, and coupled to at least one current-carrying wire on the output side of the multiple current-carrying wires via the leakage current detection unit, to form a current loop; wherein the phase protection unit can generate a control signal to disconnect the electrical coupling between the LCDI and the power source. By using a temperature controlled module, the leakage current detection unit and the phase protection unit, an LCDI with self-testing function is achieved. When there is a leakage current in the current-carrying wires, or the current-carrying wire is open, or the temperature of the electrical appliance exceeds a predefined range, or the leakage current detection wire is broken, the LCDI can disconnect its electrical coupling with the power source, ensuring the safety of the appliance and enhancing the quality of the electrical grid.
Abstract translation: 一种具有自检功能的漏电流检测中断器（LCDI），包括：漏电流检测单元，包括多个载流线和至少一个漏电流检测线，用于检测载流线的漏电流; 相位保护单元，耦合到所述多个载流线的输入侧上的至少一个载流导线，并且经由所述泄漏耦合到所述多个载流线的输出侧上的至少一个载流导线 电流检测单元，形成电流回路; 其中相位保护单元可以产生控制信号以断开LCDI和电源之间的电耦合。 通过使用温度控制模块，泄漏电流检测单元和相位保护单元，实现了具有自检功能的LCDI。 当载流导线中的漏电流或载流导线断开时，或者电气设备的温度超过预定范围时，或漏电流检测线断开时，LCDI可断开其电耦合 与电源，确保电器的安全，提高电网的质量。
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公开(公告)号：US20180109102A1
公开(公告)日：2018-04-19
申请号：US15819353
申请日：2017-11-21
Applicant: Chengli Li
Inventor： Chengli Li , Guolan Yue
Abstract: A ground fault circuit interrupter device includes a switch module, a ground fault detection module, a self-testing module and a tripping module. The switch module is coupled between the input and output ends to control the electrical connection between the input and output. The ground fault detection module detects whether a leakage current signal exists at the output end. The self-testing module is coupled to the ground fault detection module and periodically generates a self-test pulse signal which simulates the leakage current signal. The tripping module is coupled to the ground fault detection module and the switch module, to control the movement of the switch module. The device includes at least two tripping drive components, which prevents the device from becoming ineffective when the tripping module malfunctions due to long time use or use under high temperatures. This greatly improves safety of the device.
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Patent Agency Ranking
公开(公告)号：US09640968B2
公开(公告)日：2017-05-02
申请号：US14306686
申请日：2014-06-17
Applicant: Chengli Li
Inventor： Chengli Li , Guolan Yue
CPC classification number: H02H1/0015 , H02H3/044
Abstract: An arc fault detection circuit for an arc fault circuit interrupter (AFCI). The arc fault detection circuit includes an arc detecting circuit for detecting an arc fault in one or more power supply lines and outputting a detected signal, an arc filtering circuit electrically coupled to an output terminal of the arc detecting circuit for removing signal parts unrelated to the arc fault from the detected signal and outputting a filtered half-cycle signal, and an arc processing circuit electrically coupled to an output terminal of the arc filtering circuit for generating, based on the filtered half-cycle signal received, a processed half-cycle signal characterizing the arc fault. The arc fault detection circuit also includes simulated arc testing circuit that has a user-touchable test switch, and an arc oscillator to generate a simulated arc fault signal for testing the arc fault detection circuit or its respective components.
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7.发明授权公开(公告)号：US08054590B2
公开(公告)日：2011-11-08
申请号：US12098540
申请日：2008-04-07
Applicant: Chengli Li , Guolan Yue
Inventor： Chengli Li , Guolan Yue
CPC classification number: H01H83/04
Abstract: A GFCI device with circuit condition detection function includes a leakage current detection circuit, a disconnect mechanism, a reset mechanism, a circuit condition detection and control circuit, and a selection switch. The disconnect mechanism includes a first SCR controlled by the leakage current detection circuit. The circuit condition detection and control circuit includes a first control circuit and a second control circuit. When the first control circuit is connected to an anode of the first SCR by the selection switch, it provides an intermittent simulated leakage current to the leakage current detection circuit, and the leakage current detection circuit provides a trigger signal for a control gate of the first SCR, so that the first control circuit generates an intermittent simulated leakage current. When the leakage current detection circuit is not operational to generate the trigger signal, the first control circuit generates a control signal to disable the GFCI device.
Abstract translation: 具有电路状态检测功能的GFCI装置包括泄漏电流检测电路，断开机构，复位机构，电路状态检测和控制电路以及选择开关。 断开机构包括由泄漏电流检测电路控制的第一SCR。 电路状态检测和控制电路包括第一控制电路和第二控制电路。 当第一控制电路通过选择开关连接到第一SCR的阳极时，其向泄漏电流检测电路提供间歇的模拟泄漏电流，并且漏电流检测电路为第一控制电路的控制栅极提供触发信号 SCR，使得第一控制电路产生间歇的模拟漏电流。 当泄漏电流检测电路不工作以产生触发信号时，第一控制电路产生禁止GFCI器件的控制信号。
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公开(公告)号：US10571526B2
公开(公告)日：2020-02-25
申请号：US15878242
申请日：2018-01-23
Applicant: Chengli Li
Inventor： Chengli Li , Guolan Yue
IPC: H02H3/00 , G01R31/50 , H02H3/33 , H01H71/12 , H02H3/10 , G01R35/00 , G01R31/28 , H01H71/04 , H01H83/04 , H01H83/14
Abstract: A ground fault circuit interrupter device includes a switch module having a reset switch, a control switch mechanically linked to the reset switch, a ground fault detection module, a self-testing module and a tripping module. The switch module controls the electrical connection between the input and output ends of the device. The ground fault detection module detects a leakage current signal at the output end. The self-testing module is coupled to the ground fault detection module and periodically generates a self-test pulse signal which simulates the leakage current signal. The tripping module is electrically coupled to the ground fault detection module and mechanically coupled to the switch module and the control switch, to control the movement of the switch module and the control switch. The control switch, which opens and closes at the same time as the reset switch, controls the power supply to the self-testing module.
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公开(公告)号：US09547047B2
公开(公告)日：2017-01-17
申请号：US14614334
申请日：2015-02-04
Applicant: Chengli Li
Inventor： Chengli Li , Guolan Yue
CPC classification number: G01R31/42 , G01R31/025 , G01R35/00 , H02H3/335
Abstract: A leakage current detection device coupled to AC power supply wires carrying an AC signal, which includes: a leakage current detection circuit including a leakage current detector, the leakage current detection circuit operating during first half-cycles among positive and negative half-cycles of the AC signal to detect a leakage current of the power supply wires and to disconnect the power supply wires from an output side when a leakage current exceeding a first threshold value is detected; and a self-detecting circuit coupled to the leakage current detection circuit, operating during second half-cycles among the positive and negative half-cycles of the AC signal to test whether the leakage current detection circuit is functioning normally.
Abstract translation: 一种泄漏电流检测装置，其耦合到承载AC信号的AC电源线，其包括：漏电流检测电路，包括泄漏电流检测器，所述漏电流检测电路在所述漏电流检测电路的正半周期和负半周期期间 AC信号，当检测到超过第一阈值的泄漏电流时，检测电源线的漏电流并断开电源线与输出侧的连接; 以及耦合到泄漏电流检测电路的自检测电路，在AC信号的正半周期和负半周期期间的第二半周期期间进行操作，以测试泄漏电流检测电路是否正常工作。
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10.发明授权公开(公告)号：US09312681B2
公开(公告)日：2016-04-12
申请号：US14497668
申请日：2014-09-26
Applicant: Chengli Li
Inventor： Chengli Li , Guolan Yue
CPC classification number: H02H5/047 , G01R31/025 , H02H3/08 , H02H3/105 , H02H3/16 , H02H3/162 , H02H3/334 , H02H5/04
Abstract: A power cord having a circuit interrupter such as a leakage current detection interrupter (LCDI) or arc fault circuit interrupter (AFCI), with a detection signal conductor wire in addition to the current carrying wires between the source and the load, and a temperature controlled switch coupled to the detection signal conductor wire on the load side. The temperature controlled switch is affixed to a device under measurement which is associated with the load, and changes its open or closed state when the device overheats. This in turn changes the state of the current flowing in the detection signal conductor wire. In response thereto, the circuit interrupter, which is coupled to the detection signal conductor wire on the source end, interrupts the power supply to the load.
Abstract translation: 具有诸如泄漏电流检测中断器（LCDI）或电弧故障电路断续器（AFCI）等电路断流器的电源线，除了源极和负载之间的电流承载线之外，还具有检测信号导体线，以及温度控制 开关耦合到负载侧的检测信号导线。 温度控制开关固定在与负载相关联的测量设备上，当设备过热时，它会改变其打开或关闭状态。 这又改变了在检测信号导线中流动的电流的状态。 响应于此，与源极上的检测信号导体线耦合的断路器中断负载的电源。
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