-
公开(公告)号：US20220416484A1
公开(公告)日：2022-12-29
申请号：US17368813
申请日：2021-07-06
Applicant: Chengli LI
Inventor： Chengli LI , Xiaoming ZHANG , Shengyun NIE
IPC: H01R13/717 , F21V23/00 , F21V8/00 , F21V23/04 , H01R13/66
Abstract: A leakage current protection device with an illumination function, including a shell, a movement assembly in the shell, power input and output assemblies coupled to the movement assembly, and an illumination assembly disposed inside the shell, which includes: an illumination control board electrically coupled to the power input or output assembly; a sensing unit coupled to the illumination control board and configured to sense an ambient condition outside the shell to generate a sensing output signal; a light emitting unit coupled to the control board, and controlled by the control board to turn on or off in response to the sensing output signal; and a light guide unit, formed by an operating element partially protruding out of the shell and disposed adjacent the light emitting unit, configured to guide the illumination light emitted by the light emitting unit out of the shell. The device is convenient to use and compact.
-
公开(公告)号：US20220011378A1
公开(公告)日：2022-01-13
申请号：US17486107
申请日：2021-09-27
Applicant: Chengli LI
Inventor： Chengli LI , Shengyun NIE
Abstract: A power cord for a leakage current detection and interruption device including two insulated power supply lines, two leakage current detection lines for detecting a leakage current on the power supply lines, and two conductor wires. The two leakage current detection lines and the two conductor wires are electrically insulated from each other along the length of the power cord but are electrically connected in series to form a detection current path of a leakage current detection module. The leakage current detection and interruption device further includes a detection monitoring module, coupled in series to the detection current path, for detecting an open circuit condition in the detection current path. The device further includes a switch module and a drive module, which can cut off power supply in response to a detected leakage current or open circuit condition in the detection current path.
-
公开(公告)号：US20210118869A1
公开(公告)日：2021-04-22
申请号：US16670808
申请日：2019-10-31
Applicant: Chengli LI
Inventor： Chengli LI , Shengyun NIE
Abstract: A leakage current detection and protection device coupled between input and output ends of power lines, and includes first and second switching modules, a leakage current detection module, a self-test module, and first and second drive modules. When the leakage current detection module detects a leakage current on the power lines, the second drive module controls the second switching module to disconnect power to the output end. When the self-test module detects a fault in the leakage current detection module, the first drive module controls the first switching module to disconnect the power to the output ends. The first switching module is coupled between the input end and a point where the leakage current detection module, the self-test module, and the first and second drive modules are coupled, so that these modules are de-powered when the first switching module disconnects the electrical connection to output ends.
-
公开(公告)号：US20210006060A1
公开(公告)日：2021-01-07
申请号：US17013610
申请日：2020-09-06
Applicant: Chengli LI
Inventor： Chengli LI , Long CHEN
Abstract: An intelligent leakage current detection and interruption device for a power cord, including a switch module for controlling electrical connection of two power lines between input and output ends; a leakage current detection module, including two leakage current detection lines and a signal feedback line, one end of the parallelly coupled two leakage current detection lines being coupled via the signal feedback line to a point between the two power lines, for respectively detecting a leakage current on the two power lines; a detection monitoring module, coupled to the leakage current detection module, for detecting open circuit conditions in the two leakage current detection lines; and a drive module, coupled to the switch module, the leakage current detection module and the detection monitoring module, for driving the switch module to disconnect power to the output end in response to any detected leakage current or open circuit condition.
-
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.
-
Patent Agency Ranking
公开(公告)号：US20160169981A1
公开(公告)日：2016-06-16
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。
-
公开(公告)号：US20250096552A1
公开(公告)日：2025-03-20
申请号：US18484174
申请日：2023-10-10
Applicant: Chengli LI
Inventor： Chengli LI , Long CHEN
Abstract: A leakage current detection and interruption device includes a switch module for connecting and disconnecting an electrical connection between input and output ends of current carrying lines; a leakage current detection module coupled to the current carrying lines, for detecting a leakage current signal on the current carrying lines and generating a detected signal in response thereto; a leakage current processing module coupled to the leakage current detection module, for receiving the detected signal and generating a leakage fault signal based on the amplitude and frequency of the detected signal; and a drive module coupled to the switch module and the leakage current processing module, for receiving the leakage fault signal and driving the switch module to disconnect the electrical connection in response thereto.
-
公开(公告)号：US20250069838A1
公开(公告)日：2025-02-27
申请号：US18469478
申请日：2023-09-18
Applicant: Chengli LI
Inventor： Chengli LI , Xiaoming ZHANG
Abstract: An electric-driven trip and reset mechanism includes input terminal and output terminals, and a position control unit, which includes a control circuit board and a coil support frame assembly and a magnet support frame assembly both coupled to the control circuit board. The input terminal is mounted on the coil support frame assembly and coupled to the control circuit board; the output terminal is mounted on the magnet support frame assembly and coupled to the control circuit board. The magnet support frame assembly is configured to move between first position farther away from the coil support frame assembly and second position closer to the coil support frame assembly. At the first position, the input and output terminals are disconnected from each other, and at the second position, the input and output terminals are connected to each other. The device can automatically switch between reset and trip functions.
-
公开(公告)号：US20250060422A1
公开(公告)日：2025-02-20
申请号：US18469407
申请日：2023-09-18
Applicant: Chengli LI
Inventor： Chengli LI , Long CHEN
Abstract: A leakage current detection and interruption device includes a switch module; a leakage current detection module for detecting leakage current signal on current carrying lines and generating a leakage fault signal in response thereto; a drive module, coupled to the switch module and the leakage current detection module, for driving the switch module to disconnect electrical connection on the current carrying lines in response to the leakage fault signal; a self-test module, coupled to the leakage current detection module and the drive module, for periodically generating a simulated leakage current signal and detecting malfunction in the leakage current detection module and/or drive module, and generating a self-test fault signal in response thereto; and an alarm module, coupled to the self-test module, for generating an alarm signal in response to the leakage fault signal and/or self-test fault signal. The device can alert the user under tripped or malfunction conditions.
-
公开(公告)号：US20240410927A1
公开(公告)日：2024-12-12
申请号：US18348161
申请日：2023-07-06
Applicant: Chengli LI
Inventor： Chengli LI , Long CHEN , Guolan YUE
IPC: G01R31/08
Abstract: An arc fault detection circuit includes a signal collection circuit that collects a current signal on power supply lines and to output a first signal; a window gating circuit that generates a window gating signal corresponding to the first signal; and a signal processing circuit, coupled to the signal collection circuit and the window gating circuit, for generating an arc fault signal based on the window gating signal and the first signal. By using the window gating circuit, the arc fault detection circuit performs arc detection only during certain time intervals of the AC period where the harmful arcs will be present. This improves the accuracy of arc detection and reduces the probability of false tripping.
-
-
-
-
-
-
-
-
-
Search Results
63
records
(took 0.021 seconds)
