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1. 发明授权

US11658475B1 Leakage current detection and interruption device, electrical connector and electrical appliance 有权
公开(公告)号：US11658475B1
公开(公告)日：2023-05-23
申请号：US17558357
申请日：2021-12-21
申请人： Chengli Li
发明人： Chengli Li , Long Chen
IPC分类号： H02H3/16 , H02H1/00
CPC分类号： H02H3/16 , H02H1/0007
摘要： A leakage current detection and interruption device coupled to power supply lines, including a leakage current detection module for generating a leakage current fault signal when detecting leakage currents on the lines; a trip drive module responsive to the leakage current fault signal to drive a switch to disconnect power on the lines, the trip drive module including a first semiconductor device responsive to the leakage current fault signal to cause a current in a first coil to drive the switch; a coil function detection module for generating a coil fault signal when detecting a fault in the first coil; a self-test module for generating a self-test fault signal when detecting a fault in the leakage current detection module or the first semiconductor device; and a detection drive module for driving the switch to disconnect power in response to the coil fault signal or the self-test fault signal.

2. 发明授权

US11223192B2 Leakage current protection device with automatic or manual reset after power outage 有权
公开(公告)号：US11223192B2
公开(公告)日：2022-01-11
申请号：US16746510
申请日：2020-01-17
申请人： Chengli Li
发明人： Chengli Li , Guolan Yue , Long Chen
IPC分类号： H02H3/06 , H02H3/10 , H02H3/26
摘要： A leakage current protection device with automatic reset after power outage includes a switch, a power supply module, a leakage current detection module, a self-testing module, a drive control module, and a first reset module. The drive control module drives the switch based on a leakage current signal from the leakage current detection module and/or a self-test fault signal from the self-testing module. The first reset module functions to automatically set the leakage current protection device in a connected state when power resumes after an outage. Another leakage current protection device with manual reset after power outage includes similar components above and also a second reset module, which functions to automatically set the leakage current protection device in a disconnected state when power resumes after an outage; the device can then be manually reset using a reset switch. These two devices can suit different needs of different electrical appliances.

3. 发明授权

US11005260B2 Leakage current detection and interruption device for power cord, and power connector and appliance employing the same 有权
公开(公告)号：US11005260B2
公开(公告)日：2021-05-11
申请号：US16687129
申请日：2019-11-18
申请人： Chengli Li
发明人： Chengli Li , Long Chen
IPC分类号： H02H7/00 , H02H7/22 , H01R13/717 , H02H1/00 , H01R13/713
摘要： A leakage current detection and interruption (LCDI) device for power cord, and power connector and appliance employing the same. The LCDI device includes a switch module coupled on the power supply lines to control electrical connection between input and output ends of the device; a leakage current detection module including a leakage current detection line, for detecting a leakage current on the power supply lines and outputting a leakage current fault signal accordingly; a drive module, for driving the switch module to disconnect the electrical connection in response to the leakage current fault signal and/or an open circuit fault signal, the open circuit fault signal representing an open circuit condition of the leakage current detection line; and a test module including a test switch, coupled to the leakage current detection module, where the leakage current detection module outputs the leakage current fault signal when the test switch is closed.

4. 发明授权

US10069292B2 Leakage current detection device for appliances 有权
公开(公告)号：US10069292B2
公开(公告)日：2018-09-04
申请号：US15080077
申请日：2016-03-24
申请人： Chengli Li
发明人： Chengli Li , Guolan Yue , Wei Zhang
IPC分类号： H02H3/16 , H02H3/33 , H02H3/02
摘要： A leakage current detection device connected between a power source and a load, which includes a self-testing or leakage current detection selection trigger unit, for selecting a leakage current detection mode or a self-testing mode; a self-testing unit, for periodically generating a simulated leakage current signal in the self-testing mode; and a leakage current detection unit, for detecting a leakage current signal in the leakage current detection mode and detecting the simulated leakage current signal in the self-testing mode. The selection trigger unit further causes the power source to be disconnected from the load when a leakage current signal is detected, and sends a self-testing result to the self-testing unit depending on whether the leakage current detection unit detects the simulated leakage current signal. The self-testing unit displays an indication of the self-testing result.

5. 发明授权

US09640969B2 Arc fault circuit interrupter 有权
公开(公告)号：US09640969B2
公开(公告)日：2017-05-02
申请号：US14310223
申请日：2014-06-20
申请人： Chengli LI
发明人： Chengli Li , Xiaoming Zhang
IPC分类号： H02H1/00 , H01R13/713 , H01R103/00 , H01R24/22
CPC分类号： H02H1/0015 , H01R13/713 , H01R24/22 , H01R2103/00
摘要： An arc fault circuit interrupter includes: an insulating casing, electrical input terminals and electrical output terminals, first and second electrical path connected between the electrical input terminals and electrical output terminals, and a movement mechanism. The movement mechanism includes: first and second moving contact arms, electrically coupled to the first and second electrical paths, respectively; a control circuit board; an arc detection mechanism, electrically coupled to the control circuit board, for detecting an arc signal and causing the control circuit board to generate a trip signal; a tripping mechanism, electrically coupled to the control circuit board, for receiving the trip signal to disconnect the electrical coupling between the first moving contact arm and the first electrical path and/or the electrical coupling between the second moving contact arm and the second electrical path. The device can immediately cut off the power when detecting an arc signal to prevent fire hazard.

6. 发明授权

US09535106B2 Leakage current detection device for appliances 有权
标题翻译：电器泄漏电流检测装置
公开(公告)号：US09535106B2
公开(公告)日：2017-01-03
申请号：US15151801
申请日：2016-05-11
申请人： Chengli Li
发明人： Chengli Li
IPC分类号： G01R31/02 , H02H3/16 , H03K5/24 , G01R31/04 , G01R31/42 , G01R35/00 , H02H3/33
CPC分类号： G01R31/025 , G01R31/04 , G01R31/42 , G01R31/44 , G01R35/00 , H02H3/16 , H02H3/335 , H03K5/24
摘要： A leakage current detection device includes a self-test pulse generating unit, for generating a pulsed triggering signal when the leakage current detection device is initially energized; a self-test unit, for periodically generating simulated leakage current signals, and generating a simulated leakage current signal based on the pulsed triggering signal; and a leakage current detection unit, for detecting the simulated leakage current and actual leakage current faults. An electrical connection device incorporating the leakage current detection device is also disclosed. By providing the self-test pulse generating unit, the self-test unit can be triggered immediately after the device is initially energized to perform a self test, which prevents faults and unsafe conditions before periodic self test starts. By providing a discharge unit, the leakage current detection device is prevented form performing self test under low voltage conditions and accidental tripping can be avoided.
摘要翻译：泄漏电流检测装置包括自检脉冲发生单元，用于当漏电流检测装置初始通电时产生脉冲触发信号; 自测单元，用于周期性地产生模拟泄漏电流信号，以及基于所述脉冲触发信号产生模拟的泄漏电流信号; 以及泄漏电流检测单元，用于检测模拟的漏电流和实际漏电流故障。还公开了一种结合泄漏电流检测装置的电连接装置。通过提供自检脉冲发生单元，可以在器件初始通电后立即触发自检单元进行自检，这样可以在定期自检开始之前防止故障和不安全的状况。通过设置放电单元，可以防止泄漏电流检测装置在低电压条件下进行自检，并且可以避免意外跳闸。

7. 发明授权

US09136082B2 Ground-fault circuit interrupter 有权
标题翻译：接地故障电路断路器
公开(公告)号：US09136082B2
公开(公告)日：2015-09-15
申请号：US14019414
申请日：2013-09-05
申请人： Chengli Li , Guolan Yue
发明人： Chengli Li , Guolan Yue
IPC分类号： H01H83/02
CPC分类号： H01H83/02 , H02H3/05 , H02H3/162 , H02H3/33
摘要： A ground-fault circuit interrupter (GFCI) device, including a relay for control a switch to be in an open position or a closed position, the relay including a first coil and a second coil, wherein when both the first coil and the second coil are non-conductive, the switch is caused to be in the open position. The GFCI also includes a relay start circuit connected to the first coil for causing the first coil to be conductive or non-conductive, wherein when the first coil is conductive, the first coil causes the switch to be in the closed position, but after the first coil is conductive, the coil start circuit becomes non-conductive. The GFCI further includes a relay sustain circuit connected to the second coil for causing the second coil to be conductive or non-conductive. In addition, the GFCI includes a ground fault detect circuit for causing both the relay start circuit and the relay sustain circuit to become non-conductive when a fault signal is detected, causing both the first coil and the second coil to be non-conductive, thereby causing the switch to be in the open position.
摘要翻译：一种接地故障电路断路器（GFCI）装置，包括用于控制开关处于打开位置或闭合位置的继电器，所述继电器包括第一线圈和第二线圈，其中当所述第一线圈和所述第二线圈不导通，使开关处于打开位置。 GFCI还包括连接到第一线圈的继电器启动电路，用于使第一线圈导通或不导通，其中当第一线圈导通时，第一线圈使开关处于关闭位置，但是在第一线圈是导通的，线圈起动电路变得不导通。 GFCI还包括连接到第二线圈的继电器维持电路，用于使第二线圈导通或不导电。此外，GFCI包括接地故障检测电路，用于当检测到故障信号时使继电器启动电路和继电器维持电路都变为不导通，使得第一线圈和第二线圈都不导通，从而使开关处于打开位置。

8. 发明授权

US07019952B2 Receptacle device having circuit interrupting and reverse wiring protection 失效
标题翻译：具有电路中断和反接线保护的插座装置
公开(公告)号：US07019952B2
公开(公告)日：2006-03-28
申请号：US10368429
申请日：2003-02-20
申请人： Huadao Huang , Chengli Li
发明人： Huadao Huang , Chengli Li
IPC分类号： H02H3/16
CPC分类号： H01H83/04 , H01H2083/201 , H01R13/7135 , H02H1/0015
摘要： A circuit interrupting system has an upper cover, an intermediate support, and a base. A mounting strap is installed between the upper cover and the intermediate support, and a electric circuit board installed between the intermediate support and the base. The upper cover includes an electric output plug, a test button, and a reset button. The mounting strap includes a ground point that is connected to a ground receptacle of the electric output plug; the intermediate support on both sides a pair of output conductors. The electric circuit board comprises a differential transformer, a solenoid coil having a plunger inside, a reset button bias member, and a flexible switch; both sides of the base respectively comprise in parallel a pair of electric input connection screws and a pair of electric output point. The ground fault circuit interrupting system is installed within an output box on the wall of an ordinary household which prevents hazard caused to human and household electronics by errors in the installation of the connection lines.
摘要翻译：电路中断系统具有上盖，中间支撑件和底座。安装带安装在上盖和中间支架之间，电路板安装在中间支架和底座之间。上盖包括电输出插头，测试按钮和复位按钮。安装带包括连接到电输出插头的接地插座的接地点; 两侧的中间支撑一对输出导体。电路板包括差动变压器，具有柱塞的螺线管线圈，复位按钮偏压构件和柔性开关; 基座的两侧分别并联包括一对电输入连接螺钉和一对电输出点。接地故障电路中断系统安装在普通家庭墙壁上的输出箱内，防止连接线安装错误导致人身和家庭电子设备的危害。

9. 发明授权

US11600984B1 Leakage current detection and interruption device for power cord and related electrical connectors and electrical appliances 有权
公开(公告)号：US11600984B1
公开(公告)日：2023-03-07
申请号：US17682598
申请日：2022-02-28
申请人： Chengli Li
发明人： Chengli Li , Long Chen
IPC分类号： H02H3/16 , H02H1/00 , H02H7/22 , H01H83/02
摘要： A leakage current detection and interruption (LCDI) device for a power cord includes a switch module that controls an electrical connection of first and second power supply lines between input and an output ends; a leakage current detection module, including first and second leakage current detection lines, which respectively cover the first and second power supply lines, and are respectively configured to detect leakage current signals on the first and second power supply lines and to generate self-test fault signals in response to the first and second leakage current detection lines having an open circuit; and a drive module which receives the first and/or second leakage current signal and the first and/or second self-test fault signal, and drives the switch module to disconnect the electrical connection in response to these signals. The LCDI device can individually detect leaks on the two power supply lines and open circuit on the two leakage current detection lines.

10. 发明授权

US11489331B2 Leakage current detection and protection device, and power connector and electrical appliance employing the same 有权
公开(公告)号：US11489331B2
公开(公告)日：2022-11-01
申请号：US17349133
申请日：2021-06-16
申请人： Chengli Li
发明人： Chengli Li , Long Chen
IPC分类号： H02H7/00 , H02H7/20 , H02H1/00
摘要： A leakage current detection and protection device includes a leakage current detection module for generating a detection feedback signal when detecting a leakage current on the power supply lines, wherein the power supply lines supply a working power to the leakage current detection module during half of the AC power cycles; a self-test module for testing whether the leakage current detection module is faulty based on the detection feedback signal, which includes: a simulated leakage current generating circuit for generating a simulated leakage current signal; a fault signal generating module for generating a self-test fault signal when the leakage current detection module has a fault; and a self-test compensation module for supplying an auxiliary working power to the leakage current detection module so the leakage current detection module is in a working state whenever the simulated leakage current is generated. This prevents misjudgment by the leakage current detection module.

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