WO2022110680A1 - 一种具有定时功能带自检的漏电保护器及用电设备 - Google Patents

一种具有定时功能带自检的漏电保护器及用电设备 Download PDF

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Publication number
WO2022110680A1
WO2022110680A1 PCT/CN2021/093801 CN2021093801W WO2022110680A1 WO 2022110680 A1 WO2022110680 A1 WO 2022110680A1 CN 2021093801 W CN2021093801 W CN 2021093801W WO 2022110680 A1 WO2022110680 A1 WO 2022110680A1
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Prior art keywords
power supply
module
self
timing
circuit
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PCT/CN2021/093801
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English (en)
French (fr)
Inventor
郑建中
罗国红
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浙江中讯电子有限公司
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Priority to US17/439,191 priority Critical patent/US20230094418A1/en
Publication of WO2022110680A1 publication Critical patent/WO2022110680A1/zh

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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
    • H02H7/10—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for converters; for rectifiers
    • H02H7/12—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for converters; for rectifiers for static converters or rectifiers
    • H02H7/122—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for converters; for rectifiers for static converters or rectifiers for inverters, i.e. dc/ac converters
    • H02H7/1227—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for converters; for rectifiers for static converters or rectifiers for inverters, i.e. dc/ac converters responsive to abnormalities in the output circuit, e.g. short circuit
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
    • H02H3/26—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to difference between voltages or between currents; responsive to phase angle between voltages or between currents
    • H02H3/32—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to difference between voltages or between currents; responsive to phase angle between voltages or between currents involving comparison of the voltage or current values at corresponding points in different conductors of a single system, e.g. of currents in go and return conductors
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H11/00—Emergency protective circuit arrangements for preventing the switching-on in case an undesired electric working condition might result
    • H02H11/005—Emergency protective circuit arrangements for preventing the switching-on in case an undesired electric working condition might result in case of too low isolation resistance, too high load, short-circuit; earth fault
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
    • H02H3/02—Details
    • H02H3/027—Details with automatic disconnection after a predetermined time
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
    • H02H3/26—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to difference between voltages or between currents; responsive to phase angle between voltages or between currents
    • H02H3/32—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to difference between voltages or between currents; responsive to phase angle between voltages or between currents involving comparison of the voltage or current values at corresponding points in different conductors of a single system, e.g. of currents in go and return conductors
    • H02H3/33—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to difference between voltages or between currents; responsive to phase angle between voltages or between currents involving comparison of the voltage or current values at corresponding points in different conductors of a single system, e.g. of currents in go and return conductors using summation current transformers
    • H02H3/334—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to difference between voltages or between currents; responsive to phase angle between voltages or between currents involving comparison of the voltage or current values at corresponding points in different conductors of a single system, e.g. of currents in go and return conductors using summation current transformers with means to produce an artificial unbalance for other protection or monitoring reasons or remote control
    • H02H3/335—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to difference between voltages or between currents; responsive to phase angle between voltages or between currents involving comparison of the voltage or current values at corresponding points in different conductors of a single system, e.g. of currents in go and return conductors using summation current transformers with means to produce an artificial unbalance for other protection or monitoring reasons or remote control the main function being self testing of the device
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
    • H02H7/10—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for converters; for rectifiers
    • H02H7/12—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for converters; for rectifiers for static converters or rectifiers
    • H02H7/1216—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for converters; for rectifiers for static converters or rectifiers for AC-AC converters

Definitions

  • the present application relates to the technical field of leakage protection, and in particular, to a leakage protector with a timing function and self-checking, and electrical equipment.
  • the present application provides a leakage protector with timing function and self-checking and electrical equipment, which overcomes the defects of high cost, high power consumption and poor safety of the leakage protector in the prior art.
  • An embodiment of the present application provides a leakage protector with a timing function and self-checking, including: a leakage protection module, a timer module, a DC power supply module, and a control switch of the DC power supply module, wherein,
  • the DC power supply module is used to convert the AC power into the DC power supply, and supply power to the leakage protection module and the timer module;
  • the control switch of the DC power supply module is connected between the DC power supply module and the leakage protection module switch, or between the input AC power and the DC power supply module that supplies power to the leakage protection module, and is in a disconnected state in standby; Function requirements, the timer module sends a signal to disconnect or turn on the control switch of the DC power supply module. When the timer module sends a signal to turn on the control switch of the DC power supply module, the control switch of the DC power supply module is closed to make the leakage protection module Turn on the power supply for power-on reset, followed by the leakage function self-test. If the self-test passes, power is supplied to the load, and a self-test is performed before each power supply to the load.
  • the leakage protection module and the timer module share a DC power supply module, or the leakage protection module and the timer module are each connected to an independent DC power supply module for power supply.
  • the DC power supply module includes: a step-down circuit, a rectifier circuit, and a filter voltage-stabilizing circuit connected in sequence, wherein the step-down circuit steps down the AC power, converts it into a DC power source through the rectifier circuit, and then passes through the rectifier circuit.
  • the filter voltage regulator circuit outputs smooth direct current.
  • the timer module includes: a timer circuit and a switch with timing position indication, or the package includes: a timer circuit, a timing selection switch and a display circuit.
  • the timer circuit is an MCU or a dedicated timing integrated circuit.
  • the leakage protector with timing function and self-test further includes an AC zero-crossing detection circuit, which is connected between the DC power supply module and the timer module, and is used for the MCU in the timer module. Provides time base calibration.
  • the switch with timing position indication is a rotary switch, which includes a plurality of timing files for indicating the timing time to be selected.
  • the display circuit includes a plurality of indicator lights for indicating timing time.
  • an embodiment of the present application provides an electrical device, including the leakage protector with timing function and self-checking as described in the first aspect integrated on the device.
  • the leakage protector with timing function and self-check includes a leakage protection module, a timer module, a DC power supply module, and a DC power supply module control switch, wherein the DC power supply module control switch is connected to Between the DC power supply module and the leakage protection module switch, or between the input AC power and the DC power supply module that supplies power to the leakage protection module, it is in a disconnected state in standby; Turn on or turn on the signal of the control switch of the DC power supply module.
  • the timer module sends a signal to turn on the control switch of the DC power supply module, the control switch of the DC power supply module is closed, so that the leakage protection module is powered on for power-on reset.
  • the leakage function self-test is then carried out.
  • the present application integrates the timing function of the timer into a leakage protector capable of self-checking, so that the leakage protector is a separate product with a timing function with good safety, low standby power consumption and low cost.
  • the timer switch of the leakage protector with self-checking function provided by the embodiment of the present application is a selection switch with a time scale, which can cancel the time indicating circuit, reduce the cost, and reduce the standby power consumption of the timer module.
  • the electrical equipment provided by the embodiment of the present application is integrated with a leakage protector with a timing function and self-checking.
  • the leakage protection module has a power-on reset function. Immediately after the reset, the leakage function self-test is performed to ensure the safety of electrical equipment and personal safety.
  • Fig. 1 is a module composition diagram of an example of a leakage protector with a self-checking function provided by an embodiment of the present application;
  • FIG. 2 is a module composition diagram of another example of a leakage protector with a self-checking function provided by an embodiment of the present application;
  • FIG. 3 is a circuit diagram of a specific example of a leakage protector with a self-checking function provided by an embodiment of the present application;
  • Fig. 4 is the circuit schematic diagram of the timer module part of the leakage protector with self-checking function in Fig. 3;
  • FIG. 5 is a circuit diagram of another specific example of a leakage protector with a self-checking function provided by an embodiment of the present application.
  • FIG. 6 is a circuit schematic diagram of the leakage protector with self-checking function provided in FIG. 5 .
  • a leakage protector with a timing function and self-checking includes: a DC power supply module 1, a DC power supply module control switch 2, a leakage protection module 3, and a timer module 4, wherein the DC power supply Module 1 is used to convert AC power into DC power supply and supply power to leakage protection module 3 and timer module 4; leakage protection module 3 and timer module 4 share the DC power supply module (as shown in Figure 1), or the leakage protection module and Each timer module is connected to an independent DC power supply module for power supply (as shown in Figure 2).
  • the DC power supply module control switch 2 is connected to the DC power supply module.
  • the leakage protection module and the timer module are each connected to an independent DC power supply module for power supply
  • the DC power supply module control switch 2 is connected to the input AC power and supplies power to the leakage protection module
  • the control switch 2 of the DC power supply module is in the off state in the standby state; according to the timing function requirements, the timer module 4 sends the disconnection or connection of the DC power supply module.
  • the signal of the control switch 2 when the timer module 4 sends a signal to turn on the control switch of the DC power supply module, the DC power supply module control switch 2 is closed, so that the leakage protection module 3 is connected to the power supply for power-on reset, followed by leakage current Function self-test, if the self-test passes, power is supplied to the load, and self-test is performed before each power supply to the load.
  • the DC power supply module 1 in this embodiment includes: a step-down circuit, a rectifier circuit, and a filter voltage-stabilizing circuit that are connected in sequence.
  • the step-down circuit steps down the AC power, converts it into a DC power source through the rectifier circuit, and then filters and stabilizes the voltage.
  • the voltage circuit outputs smooth direct current.
  • the timer module in this embodiment includes: a timer circuit and a switch with timing position indication (as shown in FIG. 3 ), or includes: a timer circuit, a timing selection switch and a display circuit (as shown in FIG. 5 ), wherein
  • the timer circuit is an MCU or a dedicated timing integrated circuit.
  • the switch with timing position indication is a rotary switch, including multiple timing files, which are used to indicate the timing time that needs to be selected.
  • the leakage protector in this embodiment further includes an AC zero-crossing detection circuit, which is connected between the DC power supply module and the timer module, and is used to provide time base calibration for the MCU in the timer module.
  • the leakage protector is located between the AC power input and the AC power output, and the leakage protection module includes a tripper, a transformer ZCT and a leakage protection circuit, and the timer module includes a timer.
  • the controller circuit and the switch with position indication, the timer module and the leakage protection module share a DC power supply (DC power supply), and the timer module controls the switching of the DC power supply module control switch (DC power supply control switch) by sending a signal. Then, the leakage protector is controlled to work, and after the leakage detection is performed, the power supply (AC power output) is provided for the load.
  • DC power supply DC power supply
  • FIG. 4 is the circuit schematic diagram of the part of the timer module of the leakage protector corresponding to FIG. 3 .
  • the leakage protector module GFCI in this embodiment can realize the self-checking function, and its specific circuit is the one in the prior art that can realize the self-checking function.
  • the leakage protection circuit for detection such as the circuit structure of the patent CN211629848U, will not be repeated here.
  • the control switch Q1 of the DC power supply module can be a relay or a semiconductor device (such as MOSFET, BJT, SCR).
  • the step-down circuit in the DC power supply module includes: a step-down capacitor C1, and the resistors R1 and R2 provide a discharge circuit for the capacitor C1; rectifier The circuit is a bridge rectifier circuit from D1 to D4; the filter voltage regulator circuit includes: filter capacitor C2, voltage regulator Z1, voltage divider resistors R3, R4, secondary filter capacitor C3, U2 is a voltage regulator IC, and the low frequency after voltage regulation Filter capacitor C4, high frequency filter capacitor C5; timer main control circuit U1 is MCU, pin1 is power supply, Pin8 power supply is grounded, Pin2 to 7 are I/O ports, diode D5, resistor R5, voltage regulator Z2, resistor R6 , Capacitor C6 constitutes an AC zero-crossing detection circuit to provide time base calibration for the MCU.
  • the switch S2 with timing position indication in the embodiment of the present application is a selection switch with time scale, which can cancel the time indication circuit, reduce the cost, and at the same time reduce the standby power consumption of the timing module.
  • the timing time is adjusted by the knob switch (the first gear is long on, the second gear stops, the third gear timing time is 2 hours and a delay of 20 minutes; the fourth gear timing time is 4 hours and a delay of 20 minutes; the fifth gear timing time is 6 hours and a delay of 20 minutes. ;
  • the timing of the sixth gear is 8 hours and 20 minutes; the timing of the seventh gear is 12 hours and 20 minutes).
  • the timer After shifting gears in the middle, the timer will re-time; the timer will be restarted after 24 hours (the timer is 24 hours as a cycle), the timing time corresponding to each gear of the rotary switch above is only an example, not limited to this.
  • the timer module includes a timer circuit, a selection switch and a display circuit, and the leakage protection module and the timer module respectively Connect the independent DC power supply module to supply power (DC power supply), and the timer module controls the on-off of the DC power supply module control switch (DC power supply control switch) by sending a signal, and then controls the leakage protector module to work.
  • DC power supply DC power supply control switch
  • Fig. 6 is the circuit schematic diagram of the leakage protector corresponding to Fig. 5, which is different from Fig. 4 in that the timer module selection switch S1 is a pressing trigger button, and the timer is triggered by pressing the selection switch S1; the display circuit is Including three LED indicators (LED1, LED2, LED3), the number of indicator lights is used to indicate the timing time. In practical applications, it can be set as LED1 long on for 2 hours, flashing for 4 hours, and off means the timing is completed , LED2 is always on for 6 hours, flashing for 8 hours, off means the timing is completed, LED3 is long on for 10 hours, flashing for 12 hours, off means the timing is complete, all off means the DC power supply module control switch is off open. It should be noted that the setting form of the display circuit is only used as an example, and is not limited thereto.
  • the embodiment of the present application also provides an electrical equipment, the device is integrated with the leakage protector with timing function and self-check in the above embodiments, and the electrical equipment can be an electrical accessory or various electrical equipment requiring leakage protection, For example, various power tools, swimming pool pumps (SPA), running electrical equipment in engineering applications, etc., by integrating the leakage protector provided by this implementation, not only the standby power consumption is low, the cost is low, but also the safety is high, which can ensure Electrical equipment and personal safety.
  • the leakage protector can be an electrical accessory or various electrical equipment requiring leakage protection, for example, various power tools, swimming pool pumps (SPA), running electrical equipment in engineering applications, etc.

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Abstract

一种具有定时功能带自检的漏电保护器，包括漏电保护模块（3）、定时器模块（4）、直流电源供电模块（1）、直流电源供电模块控制开关（2），直流电源供电模块控制开关连接于直流电源供电模块和漏电保护模块开关之间，或连接于输入交流电与给漏电保护模块供电的直流电源供电模块之间，在待机情况下处于断开状态；根据定时功能要求定时器模块发送断开或接通直流电源供电模块控制开关的信号，当发送接通信号时开关闭合，漏电保护模块接通电源进行上电复位，紧接着进行漏电功能自检，自检通过则向负载供电，且在每次向负载进行供电前均进行自检。

Description

一种具有定时功能带自检的漏电保护器及用电设备 技术领域
本申请涉及漏电保护技术领域，具体涉及一种具有定时功能带自检的漏电保护器及用电设备。
背景技术
传统的漏电保护器及定时器单独制造销售，电气控制如同时需求上述两种功能，则必须分别购买组合在一起，增加了成本和控制复杂。市场上也有将上述两种功能组合一起的产品，或集成在漏保护器/定时器内，或集成在终端产品内，但只是将其两种产品简单的组合，成本降低有限，待机功耗大，安全性差。
发明内容
因此，本申请提供的一种具有定时功能带自检的漏电保护器及用电设备，克服现有技术中漏电保护器成本高，功耗大，安全性差的缺陷。
本申请实施例提供一种具有定时功能带自检的漏电保护器，包括：漏电保护模块、定时器模块、直流电源供电模块，直流电源供电模块控制开关，其中，
直流电源供电模块用于将交流电转换为直流电源，给所述漏电保护模块和定时器模块供电；
直流电源供电模块控制开关连接于直流电源供电模块和漏电保护模块开关之间，或连接于输入交流电与给漏电保护模块供电的直流电源供电模块之间，在待机情况下处于断开状态；根据定时功能要求，定时器模块发 送断开或接通直流电源供电模块控制开关的信号，当定时器模块发送接通直流电源供电模块控制开关的信号时，直流电源供电模块控制开关闭合，使漏电保护模块接通电源进行上电复位，紧接着进行漏电功能自检，自检通过则向负载供电，且在每次向负载进行供电前均进行自检。
在一实施例中，漏电保护模块与定时器模块共用直流电源供电模块，或漏电保护模块与定时器模块各自连接独立的直流电源供电模块供电。
在一实施例中，所述直流电源供电模块包括：依次连接的降压回路、整流电路、滤波稳压电路，其中降压回路将交流电进行降压后，通过整流电路转换为直流电源，然后经过滤波稳压电路输出平滑的直流电。
在一实施例中，所述定时器模块包括：定时器电路及带定时位置指示的开关，或者包包括：定时器电路、定时选择开关及显示电路。
在一实施例中，所述定时器电路为MCU或专用定时集成电路。
在一实施例中，所述的具有定时功能带自检的漏电保护器，还包括交流过零检测电路，连接于直流电源供电模块与定时器模块之间，用于为定时器模块中的MCU提供时基校准。
在一实施例中，所述带定时位置指示的开关为旋钮开关，包括多个定时档，用于指示需要选择的定时时间。
在一实施例中，所述显示电路包括多个指示灯，用于指示定时时间。
第二方面，本申请实施例提供一种用电设备，包括集成在其器件上的第一方面所述的具有定时功能带自检的漏电保护器。
本申请技术方案，具有如下优点：
1、本申请实施例提供的具有定时功能带自检的漏电保护器，包括漏电保护模块、定时器模块、直流电源供电模块，直流电源供电模块控制开关，其中，直流电源供电模块控制开关连接于直流电源供电模块和漏电保护模块开关之间，或连接于输入交流电与给漏电保护模块供电的直流电源供电模块之间，在待机情况下处于断开状态；根据定时功能要求，定时器模块发送断开或接通直流电源供电模块控制开关的信号，当定时器模块发送接通直流电源供电模块控制开关的信号时，直流电源供电模块控制开关闭合，使漏电保护模块接通电源进行上电复位，紧接着进行漏电功能自检，自检通过则向负载供电，且在每次向负载进行供电前均进行自检。本申请将定时器的定时功能集成在可进行自检的漏电保护器中，使该漏电保护器为安全好，待机功耗小，成本低的带有定时功能的单独产品。
2、本申请实施例提供的带自检功能的漏电保护器的其定时器开关为带时间刻度的选择开关，可以取消时间指示电路，降低成本，同时降低了定时器模块的待机功耗。
3、本申请实施例提供的用电设备，其上集成有具有定时功能带自检的漏电保护器，定时信号控制漏电保模块供电电源接通时，漏电保护模块具有上电复位功能，上次复位后紧接着漏电功能自检，确保用电设备和人身安全。
附图说明
为了更清楚地说明本申请具体实施方式或现有技术中的技术方案，下面将对具体实施方式或现有技术描述中所需要使用的附图作简单地介绍， 显而易见地，下面描述中的附图是本申请的一些实施方式，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。
图1为本申请实施例提供的带自检功能的漏电保护器一个示例的模块组成图；
图2为本申请实施例提供的带自检功能的漏电保护器另一个示例的模块组成图；
图3为本申请实施例提供的带自检功能的漏电保护器一个具体示例的电路图；
图4为图3中带自检功能的漏电保护器定时器模块部分的电路原理图；
图5为本申请实施例提供的带自检功能的漏电保护器另一个具体示例的电路图；
图6为图5中提供带自检功能的漏电保护器的电路原理图。
具体实施方式
下面将结合附图对本申请的技术方案进行清楚、完整地描述，显然，所描述的实施例是本申请一部分实施例，而不是全部的实施例。基于本申请中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都属于本申请保护的范围。
此外，下面所描述的本申请不同实施方式中所涉及的技术特征只要彼此之间未构成冲突就可以相互结合。
本申请实施例提供的一种具有定时功能带自检的漏电保护器，包括：直流电源供电模块1、直流电源供电模块控制开关2、漏电保护模块3、定时器模块4、其中，直流电源供电模块1用于将交流电转换为直流电源，给漏电保护模块3和定时器模块4供电；漏电保护模块3与定时器模块4共用直流电源供电模块(如图1所示)，或漏电保护模块与定时器模块各自连接独立的直流电源供电模块供电(如图2所示)，当漏电保护模块3与定时器模块4共用直流电源供电模块时，直流电源供电模块控制开关2连接于直流电源供电模块和漏电保护模块开关之间(如图1所示)，漏电保护模块与定时器模块各自连接独立的直流电源供电模块供电时，直流电源供电模块控制开关2连接于输入交流电与给漏电保护模块供电的直流电源供电模块之间(如图2所示)，在待机情况下直流电源供电模块控制开关2处于断开状态；根据定时功能要求，定时器模块4发送断开或接通直流电源供电模块控制开关2的信号，当定时器模块4发送接通直流电源供电模块控制开关的信号时，直流电源供电模块控制开关2闭合，使漏电保护模块3接通电源进行上电复位，紧接着进行漏电功能自检，自检通过则向负载供电，且在每次向负载进行供电前均进行自检。
本实施例中的直流电源供电模块1包括：依次连接的降压回路、整流电路、滤波稳压电路，其中降压回路将交流电进行降压后，通过整流电路转换为直流电源，然后经过滤波稳压电路输出平滑的直流电。
本实施例中的定时器模块包括：定时器电路及带定时位置指示的开关(如图3所示)，或者包括：定时器电路、定时选择开关及显示电路(如图5所示)，其中定时器电路为MCU或专用定时集成电路。带定时位置指 示的开关为旋钮开关，包括多个定时档，用于指示需要选择的定时时间。本实施例中的漏电保护器还包括交流过零检测电路，连接于直流电源供电模块与定时器模块之间，用于为定时器模块中的MCU提供时基校准。
在一具体实施例中，如图3所示，漏电保护器位于AC电源输入和AC电源输出之间，其漏电保护保护模块包括脱扣器，互感器ZCT及漏电保护电路，定时器模块包括定时器电路和带位置指示的开关，定时器模块和漏电保护模块共用一个直流供电源(DC电源供电)，定时器模块通过发送信号来控制直流电源供电模块控制开关(DC电源供电控制开关)的通断，进而控制漏电保护器工作，进行漏电检测后为负载提供电源(AC电源输出)。
如图4所示的为图3对应漏电保护器定时器模块部分的电路原理图，本实施例中的漏电保护器模块GFCI可以实现自检功能，其具体电路为现有技术中的可以实现自检的漏电保护电路，例如专利CN211629848U的电路结构，在此不再赘述。直流电源供电模块控制开关Q1可以为继电器或半导体器件(如MOSFET、BJT、SCR)，直流电源供电模块中的降压回路包括：降压电容C1，电阻R1、R2为电容C1提供放电回路；整流电路为D1至D4桥式整流电路；滤波稳压电路包括：滤波电容C2、稳压器Z1、分压电阻R3、R4，二次滤波电容C3，U2为稳压IC，及稳压后的低频滤波电容C4，高频滤波电容C5；定时器主控电路U1为MCU，pin1为电源，Pin8电源接地，Pin2至7均为I/O端口，二极管D5、电阻R5、稳压器Z2、电阻R6、电容C6组成交流过零检测电路，为MCU提供时基校准。
本申请实施例中带定时位置指示的开关S2为带时间刻度的选择开关，其可以取消时间指示电路，降低成本，同时降低了定时模块的待机功耗。 定时时间通过旋钮开关调节(一档长通，二挡停止，三档定时时间2小时延时20分；四挡定时时间为4小时延时20分；五挡定时时间为6小时延时20分；六挡定时时间为8小时延时20分；七档定时时间为12小时延时20分)。中途换档后，定时器重新计时；定时器24小时后重新开机定时(定时器24小时为一循环周期)，以上旋转开关各个档位对应的定时时间仅作为举例，不以此为限。
另一具体实施例漏电器的组成如图5所示，与图3所示的漏电保护器不同的是，定时器模块包括定时器电路和选择开关和显示电路，漏电保护模块与定时器模块各自连接独立的直流电源供电模块供电(DC电源供电)，定时器模块通过发送信号来控制直流电源供电模块控制开关(DC电源供电控制开关)的通断，进而控制漏电保护器模块工作。
如图6所示的为图5对应漏电保护器的电路原理图，其与图4不同的是，定时器模块选择开关S1为按压触发按钮，通过按压选择开关S1来触发定时器；显示电路为包括三个LED指示灯(LED1、LED2、LED3)，指示灯的点亮数量用来指示定时时间，实际应用中可以设置为LED1长亮定时2个小时，闪烁定时4个小时，熄灭代表定时完成、LED2长亮定时6个小时，闪烁定时8个小时，熄灭代表定时完成、LED3长亮定时10个小时，闪烁定时12个小时，熄灭代表定时完成、全部熄灭时代表直流电源供电模块控制开关断开。需要说明的是显示电路的设置形式只是作为举例说明，并不以此为限。
本申请实施例还提供一种用电设备，器件上集成有上述实施例中的具有定时功能带自检的漏电保护器，用电设备可以为电气附件或各种需要漏 电保护的用电设备，例如各种电动工具、泳池泵(SPA)、工程应用中的运行的用电设备等等，通过集成本实施提供的漏电保护器，不仅待机功耗小，成本低，同时安全性高，可以确保用电设备和人身安全。
显然，上述实施例仅仅是为清楚地说明所作的举例，而并非对实施方式的限定。对于所属领域的普通技术人员来说，在上述说明的基础上还可以做出其它不同形式的变化或变动。这里无需也无法对所有的实施方式予以穷举。而由此所引申出的显而易见的变化或变动仍处于本申请的保护范围之中。

Claims (9)

  1. 一种具有定时功能带自检的漏电保护器，其特征在于，包括：漏电保护模块、定时器模块、直流电源供电模块，直流电源供电模块控制开关，其中，
    直流电源供电模块用于将交流电转换为直流电源，给所述漏电保护模块和定时器模块供电；
    直流电源供电模块控制开关连接于直流电源供电模块和漏电保护模块开关之间，或连接于输入交流电与给漏电保护模块供电的直流电源供电模块之间，在待机情况下处于断开状态；根据定时功能要求，定时器模块发送断开或接通直流电源供电模块控制开关的信号，当定时器模块发送接通直流电源供电模块控制开关的信号时，直流电源供电模块控制开关闭合，使漏电保护模块接通电源进行上电复位，紧接着进行漏电功能自检，自检通过则向负载供电，且在每次向负载进行供电前均进行自检。
  2. 根据权利要求1所述的具有定时功能带自检的漏电保护器，其特征在于，漏电保护模块与定时器模块共用直流电源供电模块，或漏电保护模块与定时器模块各自连接独立的直流电源供电模块供电。
  3. 根据权利要求2所述的具有定时功能带自检的漏电保护器，其特征在于，所述直流电源供电模块包括：依次连接的降压回路、整流电路、滤波稳压电路，其中降压回路将交流电进行降压后，通过整流电路转换为直流电源，然后经过滤波稳压电路输出平滑的直流电。
  4. 根据权利要求1所述的具有定时功能带自检的漏电保护器，其特征在 于，所述定时器模块包括：定时器电路及带定时位置指示的开关，或者包括：定时器电路、定时选择开关及显示电路。
  5. 根据权利要求4所述的具有定时功能带自检的漏电保护器，其特征在于，所述定时器电路为MCU或专用定时集成电路。
  6. 根据权利要求5所述的具有定时功能带自检的漏电保护器，其特征在于，还包括交流过零检测电路，连接于直流电源供电模块与定时器模块之间，用于为定时器模块中的MCU提供时基校准。
  7. 根据权利要求4所述的具有定时功能带自检的漏电保护器，其特征在于，所述带定时位置指示的开关为旋钮开关，包括多个定时档位，用于指示需要选择的定时时间。
  8. 根据权利要求4所述的具有定时功能带自检的漏电保护器，其特征在于，所述显示电路包括多个指示灯，用于指示定时时间。
  9. 一种用电设备，其特征在于，包括集成在其器件上的权利要求1至8任一所述的具有定时功能带自检的漏电保护器。
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