CN210326359U - Socket circuit - Google Patents

Abstract

The present application provides a socket circuit. The socket circuit comprises a power circuit, a detection control circuit, a first elastic sheet and a second elastic sheet. When the socket circuit works, the first elastic sheet and the second elastic sheet are used for supplying power to an electrical appliance. The power supply circuit is used for acquiring mains voltage and converting the mains voltage into working voltage of the detection control circuit, so that power is supplied to the detection control circuit. The detection control circuit is provided with a switch device, and the switch device is connected between the first elastic sheet and the live wire. The detection control circuit can also detect the current magnitude in the first bullet piece and control the switch device to be switched off when the current magnitude in the first bullet piece is smaller than a preset value. When the electrical appliance enters a standby state, the current in the first elastic sheet is smaller than the current in the first elastic sheet when the electrical appliance normally works, and at the moment, the socket circuit can control the switching device to be switched off, so that the first elastic sheet and the second elastic sheet stop supplying power to the electrical appliance, and the purpose of saving electric energy is achieved.

Description

Socket circuit

Technical Field

The utility model relates to a power supply technical field especially relates to a socket circuit.

Background

Along with the continuous improvement of the living standard of people, more and more electrical equipment and household appliances are provided, and the usage amount of electric energy is also higher and higher.

In the conventional technology, electrical equipment and household appliances are usually connected to the mains supply through a power supply socket, so that the electrical equipment and household appliances can be powered on to work.

The applicant found in the course of implementing the conventional technique that: the conventional socket is used for supplying power to the electrical appliance, so that electric energy waste is easily caused.

SUMMERY OF THE UTILITY MODEL

Therefore, it is necessary to provide a socket circuit for solving the problem in the conventional technology that the socket easily wastes electric energy when supplying power to an electrical appliance.

The utility model provides a socket circuit, includes power supply circuit, detection control circuit, first shell fragment and second shell fragment, first shell fragment with the second shell fragment is used for connecting with electrical apparatus, wherein:

the power circuit is provided with a power circuit input end and a power circuit output end, the power circuit input end is connected with a live wire L and a zero line N so as to obtain commercial power voltage between the live wire L and the zero line N and carry out voltage conversion, and the power circuit output end is connected with the current input end of the detection control circuit so as to supply power to the detection control circuit;

the detection control circuit is also provided with a current sampling end, a mains supply input end and a mains supply output end, the mains supply input end is connected with the live wire L, the mains supply output end is connected with the first elastic sheet, a switch device is connected between the mains supply input end and the mains supply output end to control the on-off of a circuit from the live wire L to the first elastic sheet, the current sampling end is connected with the first elastic sheet and used for obtaining the current in the first elastic sheet, and the current sampling end is also connected with the switch device so that the switch device is switched off when the current is smaller than a preset value, and the first elastic sheet is powered off;

the second elastic sheet is connected with the zero line N.

The socket circuit comprises a power circuit, a detection control circuit, a first elastic sheet and a second elastic sheet. When the socket circuit works, the first elastic sheet and the second elastic sheet are used for supplying power to an electrical appliance. The power supply circuit is used for acquiring mains voltage and converting the mains voltage into working voltage of the detection control circuit, so that power is supplied to the detection control circuit. The detection control circuit is provided with a switch device, and the switch device is connected between the first elastic sheet and the live wire. The detection control circuit can also detect the current magnitude in the first bullet piece and control the switch device to be switched off when the current magnitude in the first bullet piece is smaller than a preset value. When the electrical appliance enters a standby state, the current in the first elastic sheet is smaller than the current in the first elastic sheet when the electrical appliance normally works, and at the moment, the socket circuit can control the switching device to be switched off, so that the first elastic sheet and the second elastic sheet stop supplying power to the electrical appliance, and the purpose of saving electric energy is achieved.

Drawings

Fig. 1 is a schematic circuit diagram of a socket circuit according to an embodiment of the present application.

Fig. 2 is a schematic circuit diagram of a socket circuit according to another embodiment of the present disclosure.

Fig. 3 is a schematic circuit diagram of a socket circuit according to another embodiment of the present application.

Fig. 4 is a schematic circuit diagram of a power circuit according to an embodiment of the present application.

Fig. 5 is a schematic circuit diagram of a detection control circuit according to an embodiment of the present application.

Wherein, the meanings represented by the reference numerals of the figures are respectively as follows:

10. a receptacle circuit;

100. a power supply circuit;

102. a power circuit input terminal;

104. a power circuit output terminal;

1042. a first voltage output terminal;

1044. a second voltage output terminal;

110. a protection circuit;

112. an input end of the protection circuit;

114. a protection circuit output terminal;

120. a filter circuit;

122. an input end of the filter circuit;

124. an output terminal of the filter circuit;

130. a voltage conversion circuit;

132. an input end of the voltage conversion circuit;

134. a voltage conversion circuit output terminal;

140. an AC-DC conversion circuit;

142. an input end of the AC-DC conversion circuit;

144. an output end of the AC-DC conversion circuit;

200. a detection control circuit;

201. a current input terminal;

202. a current sampling terminal;

203. a mains supply input end;

204. a mains supply output terminal;

205. a switching device;

212. a first pin;

214. a second pin;

216. a third pin;

218. a fourth pin;

220. an operational amplifier;

310. a first spring plate;

320. a second elastic sheet;

400. a lightning protection circuit;

410. a first end of a lightning protection circuit;

420. a second end of the lightning protection circuit;

430. and a third end of the lightning protection circuit.

Detailed Description

In order to make the above objects, features and advantages of the present invention more comprehensible, embodiments of the present invention are described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein, as those skilled in the art will be able to make similar modifications without departing from the spirit and scope of the present invention.

In this application, the connection between two electrical devices is referred to as an electrical connection. Here, the electrical connection means that the connection is made by a wire or other conductive device.

The present application provides a socket circuit 10, as shown in fig. 1, including a power circuit 100, a detection control circuit 200, a first elastic sheet 310 and a second elastic sheet 320.

Specifically, the power supply circuit 100 is used for supplying the power required for the operation of the detection control circuit 200. The power circuit 100 may be connected to the live line L and the zero line N to obtain the commercial power voltage and convert the commercial power voltage, thereby obtaining the working voltage of the detection control circuit 200. The power circuit 100 may have a power circuit input 102 and a power circuit output 104. The input end 102 of the power circuit is used for connecting the live line L and the zero line N, so as to obtain the commercial power voltage between the live line L and the zero line N. The power circuit output 104 is used to connect with the detection control circuit 200, so as to provide power to the detection control circuit 200.

The detection control circuit 200 is configured to detect a current level in the first resilient piece 310, so as to control whether the first resilient piece 310 is powered on or not according to the current level. The detection control circuit 200 may have a current input 201, a current sampling 202, a mains input 203 and a mains output 204. The current input terminal 201 may be connected to the power circuit output terminal 104 of the power circuit 100, so that the power circuit 100 may supply power to the detection control circuit 200. The mains input terminal 203 is used for connecting to a live line L, so that the mains voltage is input into the socket circuit 10. The utility power output end 204 is used for connecting with the first elastic sheet 310, so as to supply power to the electrical appliance through the first elastic sheet 310. A switching device 205 is further connected between the mains input terminal 203 and the mains output terminal 204. The switching device 205 is used to control the on/off of the circuit between the mains input terminal 203 and the mains output terminal 204. In other words, when the switching device 205 is closed, the voltage on the live line L can reach the first elastic sheet 310 through the mains input terminal 203, the switching device 205 and the mains output terminal 204; when the switching device 205 is turned off, the mains input terminal 203 and the mains output terminal 204 are turned off, and at this time, the first elastic piece 310 has no voltage. The current sampling end 202 is connected to the first elastic piece 310, and is configured to detect and obtain a magnitude of a current in the first elastic piece 310; the current sampling terminal 202 is also connected to the switching device 205, so that the switching device 205 is turned off when the magnitude of the current is smaller than a preset value.

As is known, the current of the electrical appliance during normal operation is much larger than that of the electrical appliance during standby. In other words, when the electrical equipment enters the standby state from the normal operating state, the supply current output from the first resilient tab 310 and the second resilient tab 320 to the electrical equipment is greatly reduced. Therefore, the preset value may be set to be greater than the supply current output by the first elastic sheet 310 and the second elastic sheet 320 to the electrical appliance in the standby state of the electrical appliance, and smaller than the supply current output by the first elastic sheet 310 and the second elastic sheet 320 to the electrical appliance in the normal operating state of the electrical appliance.

The first resilient piece 310 and the second resilient piece 320 may be metal resilient pieces, and the first resilient piece 310 and the second resilient piece 320 are arranged relatively independently. The second elastic sheet 320 is connected with the neutral line N. When the electric appliance works, the metal plug of the electric appliance is respectively connected with the first elastic sheet 310 and the second elastic sheet 320, and when the switch device 205 is closed, a loop from the live wire L, the commercial power input end 203, the switch device 205, the commercial power output end 204, the first elastic sheet 310, the electric appliance and the second elastic sheet 320 flows into the zero wire N can be formed.

More specifically, when the socket circuit 10 of this application is in operation, power supply circuit 100 with live wire L with zero line N connects, can acquire live wire L with mains voltage between the zero line N to convert it into the operating voltage that detects control circuit 200 and supply power to the control circuit that will incline. When the detection control circuit 200 works, the switching device 205 is closed, and at this time, the live wire L and the neutral wire N supply power to the electrical appliance through the switching device 205, the first elastic sheet 310 and the second elastic sheet 320 in the detection control circuit 200. In the power supply process, the current sampling end 202 of the detection control circuit 200 obtains the current in the first elastic sheet 310 in real time, that is, the current sampling end 202 obtains the power supply current output by the first elastic sheet 310 to the electrical appliance in real time. When the electrical appliance enters a standby state, the current is smaller than the preset value, at this time, the switch device 205 is turned off, and the socket circuit 10 stops supplying power to the electrical appliance. The socket circuit 10 can detect the current for supplying power to the electrical appliance in real time when the electrical appliance is powered, and stops supplying power to the electrical appliance after the electrical appliance enters a standby state, so that the waste of electric energy is reduced, and the purpose of saving electric energy is achieved.

In one embodiment, the receptacle circuit 10 also has a lightning protection circuit 400, as shown in FIG. 2.

Specifically, the lightning protection circuit 400 is used for being connected with a live wire L, a zero wire N and a ground wire G, so as to prevent lightning waves from invading a mains supply to endanger electrical appliances and personal safety. The lightning protection circuit 400 has a first terminal 410 of the lightning protection circuit, a second terminal 420 of the lightning protection circuit, and a third terminal 430 of the lightning protection circuit. The first end 410 of the lightning protection circuit is used for being connected with the live wire L, the second end 420 of the lightning protection circuit is used for being connected with the zero wire N, and the third end 430 of the lightning protection circuit is used for being connected with the ground wire G. Meanwhile, a voltage sensitive resistor R1 is connected between the lightning protection circuit first end 410 and the lightning protection circuit second end 420; a gas discharge tube GDT is connected between the junction of the first end 410 and the second end 420 of the lightning protection circuit and the third end 430 of the lightning protection circuit. In other words, the voltage sensitive resistor R1 is connected between the live line L and the neutral line N, one end of the voltage sensitive resistor R1 is connected to the live line L, and the other end of the voltage sensitive resistor R1 is connected to the neutral line N. One end of the gas discharge tube GDT is connected with the ground wire G, and the other end of the gas discharge tube GDT is connected with the live wire L and the zero line N simultaneously.

The magnitude of the resistance of the voltage sensitive resistor R1 is affected by the magnitude of the voltage across it. When the voltage at the two ends of the voltage sensitive resistor R1 is normal, the resistance of the voltage sensitive resistor R1 is infinite; when the voltage across the voltage sensitive resistor R1 increases momentarily, the resistance of the voltage sensitive resistor R1 decreases rapidly, so that the voltage sensitive resistor R1 is in a conducting state.

The gas discharge tube GDT can be a ceramic hermetically-packaged discharge tube, and two or more metal electrodes with gaps are arranged in the gas discharge tube GDT and filled with inert gas. When the applied voltage of the gas discharge tube GDT increases beyond the dielectric strength of the gas, the gap between the two electrodes is broken down by the discharge. At this time, the gas discharge tube GDT is transformed from an insulating state to a conductive state.

When the live wires L are invaded by lightning waves, a strong electromagnetic field generates pulse voltage, and the commercial power voltage between the live wires L is increased instantly. At this time, the resistance value of the voltage sensitive resistor R1 is rapidly decreased, and the voltage sensitive resistor R1 is turned on. When the voltage sensitive resistor R1 is turned on, the live wire L, the voltage sensitive resistor R1 and the zero line N form a power-on loop, and the voltage which is increased instantly in the live wire L can be released through the voltage sensitive resistor R1 and the zero line N. Meanwhile, the gap between the two electrodes of the gas discharge tube GDT is broken down by discharge, and the gas discharge tube GDT is conducted. When the gas discharge tube GDT is conducted, the commercial power voltage between the live wire L and the zero line N can enter the ground wire G through the gas discharge tube GDT, so that the high voltage in the live wire L and the zero line N is released.

The socket circuit 10 can release the lightning surge caused by the lightning through the lightning protection circuit 400, thereby protecting the socket circuit 10 and the electric appliance connected to the socket circuit 10.

Further, the lightning protection circuit 400 may further include a voltage sensitive resistor R2 and a voltage sensitive resistor R3.

Specifically, the voltage sensitive resistor R2 is connected between the first end 410 of the lightning protection circuit and the gas discharge tube GDT. In other words, one end of the voltage sensitive resistor R2 is connected to the live line L, and the other end of the voltage sensitive resistor R2 is connected to the other end of the gas discharge tube GDT. At this time, the wire connecting one end of the voltage sensitive resistor R2 with the live line L constitutes the first end 410 of the lightning protection circuit. The other end of the gas discharge tube GDT is connected to the live line L through the voltage sensitive resistor R2.

The voltage sensitive resistor R3 is connected between the lightning protection circuit second end 420 and the gas discharge tube GDT. In other words, one end of the voltage sensitive resistor R3 is connected to the neutral line N, and the other end of the voltage sensitive resistor R2 is connected to the other end of the gas discharge tube GDT. At this time, a wire connecting one end of the voltage sensitive resistor R2 and the neutral line N constitutes the second end 420 of the lightning protection circuit. The other end of the gas discharge tube GDT is connected with the zero line N through the voltage sensitive resistor R3.

The magnitude of the resistance of the voltage sensitive resistor R2 is also affected by the magnitude of the voltage across it. When the voltage at the two ends of the voltage sensitive resistor R2 is normal, the resistance of the voltage sensitive resistor R2 is infinite; when the voltage across the voltage sensitive resistor R2 increases momentarily, the resistance of the voltage sensitive resistor R2 decreases rapidly, so that the voltage sensitive resistor R2 is in a conducting state. The voltage sensitive resistor R3 is the same and will not be described in detail. The socket circuit 10, the lightning protection circuit 400 thereof further includes a voltage sensitive resistor R2 and a voltage sensitive resistor R3. The voltage sensitive resistor R2 is connected between the live line L and the gas discharge tube GDT, and can release the high voltage in the live line L; the voltage sensitive resistor R3 is connected between the zero line N and the gas discharge tube GDT, and can release the high voltage in the zero line N, thereby better realizing the function of preventing lightning surge of the socket circuit 10.

In another embodiment, to better achieve the function of protecting the socket circuit 10 from lightning surge, the lightning protection circuit 400 may be disposed further away from the first resilient piece 310 than the power circuit 100 and the detection control circuit 200. In other words, the commercial power voltage between the live line L and the neutral line N firstly passes through the first end and the second end of the lightning protection circuit 400, and then reaches the power circuit 100 and the detection control circuit 200.

The lightning protection circuit 400 may further include a fuse F1, wherein the fuse F1 is connected to the live line L such that current in the live line L flows in from one end of the fuse F1 and flows out from the other end of the fuse F1. The current in the live line L flows through the lightning protection circuit first end 410 after flowing out of the fuse F1.

Specifically, the fuse F1 is connected to the live line LL, and the fuse F1 is disposed at a position farther from the first resilient piece 310 than the voltage sensitive resistor R1 and the voltage sensitive resistor R2. In other words, the current in the live line L passes through the fuse F1 and then passes through the first end 410 of the lightning protection circuit, thereby reaching the power circuit 100 and the detection control circuit 200. The lightning protection circuit 400 of the socket circuit 10 further includes a fuse F1, and the fuse F1 may be fused when the current is too large, so as to protect the power circuit 100, the detection control circuit 200, and the electrical appliance connected to the socket circuit 10 in the socket circuit 10.

The power supply circuit 100 of the outlet circuit 10 of the present application is described below.

In one embodiment, as shown in fig. 3, the power circuit 100 includes a voltage conversion circuit 130 and a dc-dc conversion circuit 140.

Specifically, the voltage converting circuit 130 has a voltage converting circuit input 132 and a voltage converting circuit output 134. The input end 132 of the voltage conversion circuit is used for connecting the live wire L and the zero line N, so that the commercial power voltage between the live wire L and the zero line N can be obtained. The voltage conversion circuit 130 is configured to convert the mains voltage and output the converted voltage from the voltage conversion circuit output end 134. The voltage output from the output end 134 of the voltage conversion circuit is in accordance with the working voltage range of the detection control circuit 200.

The ac to dc converter circuit 140 has an ac to dc converter circuit input 142 and an ac to dc converter circuit output 144. The input end 142 of the ac/dc conversion circuit is used for connecting with the output end 134 of the voltage conversion circuit to obtain the ac voltage output by the output end 134 of the voltage conversion circuit. The ac/dc conversion circuit is configured to convert the ac voltage output by the voltage conversion circuit into a dc voltage, and output the converted dc voltage from the ac/dc conversion circuit output end 144. The voltage conversion circuit output end 134 is connected to the current input end 201 of the detection control circuit 200 to output a direct current to the detection control circuit 200.

More specifically, the power circuit 100 includes a voltage conversion circuit 130 and an ac/dc conversion circuit 140. The voltage conversion circuit 130 is connected to the live line L and the neutral line N, and is configured to obtain a commercial power voltage between the live line L and the neutral line N. The voltage conversion circuit 130 is configured to convert the mains voltage into an ac voltage that conforms to the working voltage range of the detection control circuit 200. The ac/dc conversion circuit 140 is connected to the voltage conversion circuit 130, and is configured to convert the ac voltage into a dc voltage. The voltage converting circuit 130 outputs the converted direct current to the detection control circuit 200, so that the detection control circuit 200 is powered on.

In this embodiment, the power supply circuit 100 includes only the voltage conversion circuit 130 for converting the magnitude of voltage and the ac/dc conversion circuit 140 for ac/dc conversion. At this time, the voltage converting circuit input end 132 of the voltage converting circuit 130 is the power circuit input end 102; the ac/dc conversion circuit output 144 of the ac/dc conversion circuit 140 is the power circuit output 104.

Further, as shown in fig. 3, the power circuit 100 may further include a protection circuit 110 and a filter circuit 120.

Specifically, the protection circuit 110 is connected between the input end 132 of the voltage conversion circuit and the live line L and the neutral line N, so that the commercial power voltage between the live line L and the neutral line N firstly passes through the protection circuit 110 and then reaches the voltage conversion circuit 130. The protection circuit 110 has a protection circuit input end 112 and a protection circuit output end 114, the protection circuit input end 112 is connected with the live line L and the zero line N to obtain the commercial power voltage between the live line L and the zero line N. The protection circuit 110 is configured to perform voltage protection on the voltage conversion circuit 130 and the ac-dc conversion circuit 140 to prevent an excessive voltage from being input to the voltage conversion circuit 130.

The filter circuit 120 is connected between the output end 134 of the voltage converting circuit and the protection circuit 110, so that the voltage output by the protection circuit 110 is filtered by the filter circuit 120 and then reaches the voltage converting circuit 130. The filter circuit 120 has a filter circuit input 122 and a filter circuit output 124, and the filter circuit input 122 is connected to the protection circuit output 114, so as to obtain the voltage output by the protection circuit 110. The filter circuit 120 is used for filtering the voltage output by the protection circuit to eliminate the glitch in the voltage, so that the voltage entering the voltage conversion circuit 130 is smooth. The filter circuit output 124 is coupled to the voltage conversion circuit input 132.

More specifically, the power circuit 100 includes a protection circuit 110, a filter circuit 120, a voltage conversion circuit 130, and an ac/dc conversion circuit 140. The protection circuit 110 is connected to the live line L and the neutral line N, and is configured to obtain a commercial power voltage between the live line L and the neutral line N. The filter circuit 120 is connected to the protection circuit 110 to be protected by the protection circuit 110. The filter circuit 120 is configured to filter the mains voltage and output the filtered voltage to the voltage conversion circuit 130. The voltage conversion circuit 130 and the ac-dc conversion circuit 140 are respectively configured to perform voltage conversion and ac-dc conversion on the commercial power, and are not described again.

In this embodiment, the power circuit 100 includes a protection circuit 110, a filter circuit 120, a voltage conversion circuit 130, and an ac/dc conversion circuit 140 in order along the current direction. At this time, the protection circuit input end 112 is the power circuit input end 102; the ac/dc conversion circuit output 144 of the ac/dc conversion circuit 140 is the power circuit output 104.

The power supply circuit 100 in the socket circuit 10 of the present application will be described in detail from a specific embodiment with reference to fig. 4.

As shown in fig. 4, the power circuit 100 includes a protection circuit 110, a filter circuit 120, a voltage conversion circuit 130, and an ac/dc conversion circuit 140.

The protection circuit 110 includes a capacitor C1, a thermistor R12, and a voltage sensitive resistor R13. One polar plate of the capacitor C1 is connected with the live wire L, and the other polar plate of the capacitor C1 is connected with the zero wire N. The thermistor R12 is connected to the live line L, i.e., one end of the thermistor R12 is connected to the live line L, and the other end of the thermistor R12 is also connected to the live line L, so that the current in the live line L must flow through the thermistor R12. One end of the voltage sensitive resistor R13 is connected with the live wire L; the other end of the voltage sensitive resistor R13 is connected with the zero line N. And the thermistor R12 is electrically arranged between one polar plate of the capacitor C1 and one end of the resistor R13. At this time, the connection point of the capacitor C1 and the thermistor R12, and the connection point of the capacitor C1 and the neutral wire N constitute the power circuit input terminal 102 and the protection circuit input terminal 112; the output end of the resistor R12, the connection point of the voltage sensitive resistor R13, and the connection point of the voltage sensitive resistor R13 and the zero line N form the output end 114 of the protection circuit. When the protection circuit 110 is in operation, the power circuit 100 can be prevented from having an excessively high temperature. When the temperature of the power circuit 100 is too high, the resistance of the thermistor R12 is rapidly decreased, and at this time, the voltage across the voltage sensitive resistor R13 is increased, and the voltage sensitive resistor R13 is turned on. When the voltage sensitive resistor R13 is turned on, the live line L, the voltage sensitive resistor R13, and the neutral line N form a path, and at this time, the filter circuit 120, the voltage conversion circuit 130, and the ac/dc conversion circuit 140 stop working.

A diode D1 may be connected to the line L between the protection circuit 110 and the filter circuit 120 to buffer the current input to the filter circuit 120.

The filter circuit 120 includes a capacitor C2, an inductor L1, and a capacitor C3. One polar plate of the capacitor C2 is connected with the live wire L, and the other polar plate of the capacitor C2 is connected with the zero wire N. The inductor L1 is connected to the live line L, i.e. one end of the inductor L1 is connected to the live line L, and the other end of the inductor L1 is also connected to the live line L, so that the current in the live line L must flow through the inductor L1. One polar plate of the capacitor C3 is connected with the live wire L, and the other polar plate of the capacitor C3 is connected with the zero wire N. And the inductor L1 is electrically connected between one plate of the capacitor C2 and one plate of the capacitor C3. The capacitor C2 and the capacitor C3 are filter capacitors. At this time, the connection point of the inductor L1 and the capacitor C2, and the connection point of the capacitor C2 and the neutral wire N constitute the filter circuit input end 122; the junction of the inductor L1 and the capacitor C3, and the junction of the capacitor C3 and the neutral line N form the filter circuit output 124.

The voltage conversion circuit 130 comprises a controller U2, a capacitor C4, an inductor L2, a resistor R14, a resistor R15, a capacitor C5 and a capacitor C6. The controller U2 may be a single chip microcomputer of the type LNK306PN, so as to convert the mains voltage into an ac voltage of 12V. The capacitor C4, the inductor L2, the resistor R14, the resistor R15, the capacitor C5 and the capacitor C6 are fixedly arranged on the single chip microcomputer to achieve voltage conversion. The connection mode is shown in fig. 4 and is not described again. At this time, the connection point of the controller U2 and the inductor L1, and the connection point of the inductor L2 and the neutral wire N constitute the input end 132 of the voltage conversion circuit. The connection point of the resistor R15 and the live line L and the connection point of the inductor L2 and the neutral line N constitute the output end 134 of the voltage conversion circuit.

The ac-dc conversion circuit 140 includes a diode D2 and a diode D3. The diode D2 is connected to the hot line L, the cathode of the diode D2 is electrically close to the voltage converting circuit output 134, and the anode of the diode D2 is electrically far from the voltage converting circuit output 134. The cathode of the diode D3 is connected with the cathode of the diode D2, and the anode of the diode D3 is connected with the neutral wire N. At this time, the connection point between the cathode of the diode D2 and the cathode of the diode D3 and the anode of the diode D3 constitute the ac/dc conversion circuit input terminal 142; the anode of the diode D2 and the anode of the diode D3 form the ac/dc converter output terminal 144.

The power circuit 100 may further include a capacitor C7, a capacitor C8, a controller U3, a capacitor C9, and a capacitor C10. The capacitor C7 and the capacitor C8 are filter capacitors and are used for stabilizing the output voltage. The controller U3, the capacitor C9 and the capacitor C10 are used for converting 12V direct current voltage into stable 5V direct current voltage. The controller U3 may be model L7905. At this time, a connection point of the capacitor C8 and the anode of the diode D2 constitutes a first voltage output terminal 1042 for stably outputting a 12V dc voltage. The connection point of the capacitor C10 and the controller U3 forms a second voltage output terminal 1044, which is used for stably outputting 5V dc voltage. At this time, the first voltage output terminal 1042 and the second voltage output terminal 1044 jointly form the output terminal 104 of the power circuit.

The detection control circuit 200 of the outlet circuit 10 of the present application is described below.

In one embodiment, the power circuit output 104 includes the first voltage output 1042 and the second voltage output 1044, and the first voltage output 1042 is higher than the second voltage output 1044. As shown in fig. 5, the detection control circuit 200 includes a controller U1.

Specifically, the controller U1 may be a single chip microcomputer of any type having a judgment function. The controller U1 has a first leg 212, a second leg 214, a third leg 216, and a fourth leg 218. The first pin 212 and the second pin 214 form a current input terminal 201 of the detection control circuit 200, and are used for inputting direct current to perform power-on operation. The first pin 212 may be connected to the first voltage output terminal 1042, so that a direct current of 12V voltage is input from the first pin 212. The second pin 214 may be connected to the second voltage output terminal 1044, so that the dc power of 5V is input from the second pin 214. The third pin 216 is used for connecting with the first resilient piece 310, so as to obtain the current magnitude in the first resilient piece 310. The fourth pin 218 is used to connect with the switching device 205, so as to control the switching device 205 to be turned off under certain conditions.

When the detection control circuit 200 is operated, the first pin 212 and the second pin 214 of the controller U1 are used for inputting direct current, so that the controller U1 can be powered on and operated. The third pin 216 of the controller U1 is used to obtain the current level in the first resilient piece 310. The controller U1 may have a preset program therein, where the preset program includes: the preset value is set, after the current magnitude in the first elastic sheet 310 is obtained, the current magnitude is compared with the preset value, and if the current magnitude is smaller than the preset value, the switching device 205 is controlled to be turned off through the fourth pin 218.

In one embodiment, the switching device 205 may be a thyristor TY 1. Specifically, the thyristor TY1 has a first terminal, a second terminal, and a third terminal. The first end and the second end are switch ends of the thyristor TY1 and are used for controlling the on-off of the circuit through the on-off between the first end and the second end. The third end is a controlled end of the thyristor TY1, and the on-off between the first end and the second end can be controlled by inputting an electric signal to the third end. The first end of the thyristor TY1 is connected with the live wire L to form the mains input end 203 of the detection control circuit 200; the second end of the thyristor TY1 is connected to the first elastic piece 310, so as to form the utility power output end 204 of the detection control circuit 200. The third terminal of the thyristor TY1 is connected to the fourth pin 218, so that the controller U1 can control the on/off of the thyristor TY 1.

At this time, as shown in fig. 5, the detection control circuit 200 may further include a transistor Q1, a resistor R4, a resistor R5, and a resistor R6.

Specifically, the base of the transistor Q1 is connected to the fourth pin 218218, the collector of the transistor Q1 is connected to the third end of the thyristor TY1, and the emitter of the transistor Q1 is connected to the second voltage output terminal 1044. The transistor Q1 may be an NPN transistor that is turned on at high and off at low.

The resistor R4 is connected between the base of the transistor Q1 and the fourth pin 218. In other words, one end of the resistor R4 is connected to the base of the transistor Q1, and the other end of the resistor R4 is connected to the fourth pin 218 of the controller U1.

The resistor R5 is connected between the base of the transistor Q1 and the emitter of the transistor Q1. In other words, one end of the resistor R5 is connected to the base of the transistor Q1, and the other end of the resistor R4 is connected to the emitter of the transistor Q1.

The resistor R6 is connected between the collector of the transistor Q1 and the third terminal of the thyristor TY 1. In other words, one end of the resistor R6 is connected to the collector of the transistor Q1, and the other end of the resistor R6 is connected to the third end of the thyristor TY 1.

When the detection control circuit 200 is in operation, the controller U1 can input different level signals through the fourth pin 218 to control the thyristor TY1 to open or close. For example, when the electrical consumer is operating normally, the fourth pin 218 outputs a high level, and the transistor Q1 is turned on. Thyristor TY1 with second voltage output 1044 communicates, thyristor TY1 switches on under the drive of 5V voltage, mains voltage between live wire L can pass through mains input 203, thyristor TY1 and mains output 204 reach first shell fragment 310. When the electrical appliance enters standby, the fourth pin 218 outputs a low level. At this time, the triode Q1 is turned off, the thyristor TY1 is not driven by 5V voltage, and is also turned off, and the first elastic piece 310 is powered off.

In one embodiment, as shown in fig. 5, the detection control circuit 200 of the socket circuit 10 further includes: resistor R7.

Specifically, the resistor R7 is a sampling resistor of the detection control circuit 200, so that the third pin 216 of the controller U3 can obtain the current level in the first resilient piece 310. The resistor R7 is connected between the first resilient piece 310 and the switching device 205. That is, one end of the resistor R7 is connected to the switching device 205, the other end of the resistor R7 is connected to the first elastic piece 310, and at this time, the other end of the resistor R7 connected to the first elastic piece 310 constitutes the commercial power output terminal 204. The third pin 216 is connected to the resistor R7 near the other end of the first resilient piece 310 to obtain the current between the resistor R7 and the first resilient piece 310, where the current is the current in the first resilient piece 310.

Further, as shown in fig. 5, the detection control circuit 200 further includes an isolation capacitor C11. One end of the capacitor C11 is electrically connected with one end of the resistor R6, which is close to the thyristor TY 1; the other end of the capacitor C11 is electrically connected to one end of the resistor R7 close to the first resilient piece 310.

Further, as shown in fig. 5, the detection control circuit 200 further includes: operational amplifier 220, resistor R8, resistor R9, resistor R10 and resistor R11.

Specifically, the operational amplifier 220 includes a non-inverting input terminal, an operational amplifier output terminal, a power input terminal, and a power output terminal. The non-inverting input terminal is electrically connected to one end of the resistor R7 close to the switching device 205. The inverting input terminal is electrically connected to one end of the resistor R7 close to the first elastic sheet 310, and the inverting input terminal is connected to the operational amplifier output terminal. The operational amplifier output is connected to the third pin 216. The power input end is connected to the first voltage output end 1042, and the power output end is connected to a common end COM.

The resistor R8 is connected between the non-inverting input terminal and an end of the resistor R7 electrically close to the switch device 205. In other words, one end of the resistor R8 is connected to the non-inverting input terminal, and the other end of the resistor R8 is connected to one end of the resistor R7 electrically close to the switching device 205.

The resistor R9 is connected between the inverting input terminal and one end of the resistor R7 electrically close to the first resilient piece 310. In other words, one end of the resistor R9 is connected to the inverting input terminal, and the other end of the resistor R9 is connected to one end of the resistor R7 electrically close to the first resilient piece 310.

And the resistor R10 is connected between the inverting input end and the operational amplifier output end. In other words, one end of the resistor R10 is connected to the inverting input terminal, and the other end of the resistor R10 is connected to the operational amplifier output terminal.

And the resistor R11 is connected between the operational amplifier output end and the third pin 216. In other words, one end of the resistor R11 is connected to the op-amp output, and the other end of the resistor R11 is connected to the third pin 216 of the controller U1.

When the detection control circuit 200 works, when the current flowing through the sampling resistor R7 is different, the values of the analog signals output by the operational amplifier output end are different. After the value of the analog signal is obtained by the third pin 216 of the controller U1, the magnitude of the current flowing through the sampling resistor R7, i.e., the magnitude of the current in the first elastic piece 310, can be obtained.

The detailed operation of the socket circuit 10 of the present application will be described in detail with reference to fig. 2 to 5. In this application, the socket circuit 10 includes a lightning protection circuit 400, a power circuit 100, a detection control circuit 200, a first resilient piece 310 and a second resilient piece 320.

The socket circuit 10 mainly comprises two parts, namely a first part for lightning protection and a second part for standby automatic power off in the order of approaching to a power grid.

The first part of the lightning protection comprises a lightning protection circuit 400, which in particular comprises a voltage sensitive resistor R1, a voltage sensitive resistor R2, a voltage sensitive resistor R3 and a gas discharge tube GDT. The voltage sensitive resistor R1 is connected between the live wire L and the zero wire N; a voltage sensitive resistor R2 is connected between the live line L and the gas discharge tube GDT; a voltage sensitive resistor R3 is connected between the neutral line N and the gas discharge tube GDT. One end of the gas discharge tube GDT, which is not connected to the voltage sensitive resistor R2 and the voltage sensitive resistor R3, is connected to the ground line G. When live wire L with zero line N is invaded by the thunder wave, live wire L with commercial power voltage between the zero line N increases in the twinkling of an eye. At this time, the voltage sensitive resistor R1, the voltage sensitive resistor R2, the voltage sensitive resistor R3 and the gas discharge tube GDT are turned on, and the commercial power voltage between the live wires L can enter the neutral wire N and the ground wire G through the voltage sensitive resistor R1, the voltage sensitive resistor R2 and the gas discharge tube GDT, so that the high voltage in the live wires L is released. Similarly, the commercial power voltage between the neutral wires N can also enter the ground wire G through the voltage sensitive resistor R3 and the gas discharge tube GDT, so as to release the high voltage in the neutral wires N.

The second part of the standby auto-power-off includes the power supply circuit 100 and the detection control circuit 200. When the power circuit 100 works, the protection circuit 110 first obtains the commercial power voltage between the live line L and the neutral line N, and transmits the commercial power voltage to the filter circuit 120. The filter circuit 120 filters the mains voltage and transmits the filtered mains voltage to the voltage conversion circuit 130. The voltage conversion circuit 130 is configured to convert the mains voltage into an ac voltage that conforms to the working voltage range of the detection control circuit 200, and transmit the ac voltage to the ac-dc conversion circuit 140. The ac/dc conversion circuit 140 converts the ac voltage corresponding to the operating voltage range of the detection control circuit 200 into a dc voltage of 12V. The power supply circuit 100 can also convert the 12V dc voltage into 5V dc voltage, thereby outputting 12V and 5V dc voltages.

The power supply circuit 100 is configured to operate to the detection control circuit 200. The working process of the detection control circuit 200 is as follows: in an initial state, the thyristor TY1 is closed, and the voltage of the live line L is input from the utility power input terminal 203 and output from the utility power output terminal 204 to the first elastic piece 310. The non-inverting input and the inverting input of the operational amplifier 220 are used for detecting the current across the resistor R7. The operational amplifier output end is used for outputting an analog signal, and the controller U1 can obtain the current magnitude in the resistor R7 according to the value of the analog signal. When the electrical appliance enters the standby state from the working state, the current flowing through the thyristor TY1 and the resistor R7 is reduced. When the current level is less than the controller preset value, the fourth pin 218 outputs a low level. At this time, the triode Q1 is turned off, the thyristor TY1 is not driven by 5V voltage, and is also turned off, and the first elastic piece 310 is powered off.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims (10)

1. The socket circuit is characterized by comprising a power supply circuit (100), a detection control circuit (200), a first elastic sheet (310) and a second elastic sheet (320), wherein the first elastic sheet (310) and the second elastic sheet (320) are used for being connected with an electric appliance, and the socket circuit comprises:

the power circuit (100) is provided with a power circuit input end (102) and a power circuit output end (104), the power circuit input end (102) is connected with a live wire L and a zero wire N to obtain commercial power voltage between the live wire L and the zero wire N and carry out voltage conversion, and the power circuit output end (104) is connected with a current input end (201) of the detection control circuit (200) to supply power to the detection control circuit (200);

the detection control circuit (200) is further provided with a current sampling end (202), a mains input end (203) and a mains output end (204), the mains input end (203) is connected with the live wire L, the mains output end (204) is connected with the first elastic sheet (310), a switch device (205) is connected between the mains input end (203) and the mains output end (204) to control the circuit connection and disconnection of the live wire L to the first elastic sheet (310), the current sampling end (202) is connected with the first elastic sheet (310) and used for obtaining the current in the first elastic sheet (310), and the current sampling end (202) is further connected with the switch device (205) so that the switch device (205) is disconnected when the current is smaller than a preset value, and the first elastic sheet (310) is powered off;

the second elastic sheet (320) is connected with the zero line N.

2. The receptacle circuit of claim 1, further comprising:

lightning protection circuit (400), have lightning protection circuit first end (410), lightning protection circuit second end (420) and lightning protection circuit third end (430), lightning protection circuit first end (410) with live wire L connects, lightning protection circuit second end (420) with zero line N connects, lightning protection circuit third end (430) are connected with ground wire G, lightning protection circuit first end (410) with be connected with voltage sensitive resistor R1 between lightning protection circuit second end (420), just lightning protection circuit first end (410) with the junction of lightning protection circuit second end (420) with be connected with gas discharge tube GDT between lightning protection circuit third end (430), lightning protection circuit (400) are used for releasing the high voltage that produces when live wire L is invaded by the lightning wave.

3. The receptacle circuit of claim 2, wherein the lightning protection circuit (400) further comprises:

a voltage sensitive resistor R2 connected between the lightning protection circuit first end (410) and the gas discharge tube GDT;

and the voltage sensitive resistor R3 is connected between the second end (420) of the lightning protection circuit and the GDT.

4. The receptacle circuit of claim 2, wherein the lightning protection circuit (400) further comprises:

and the fuse tube F1 is connected to the live wire L, so that the current in the live wire L flows in from one end of the fuse tube F1 and flows out from the other end of the fuse tube F1, and the current in the live wire L flows through the first end (410) of the lightning protection circuit after flowing out from the fuse tube F1.

5. The receptacle circuit of claim 1, wherein the power circuit (100) comprises:

the voltage conversion circuit (130) is provided with a voltage conversion circuit input end (132) and a voltage conversion circuit output end (134), the voltage conversion circuit input end (132) is connected with the live line L and the zero line N, and the voltage conversion circuit (130) is used for converting the mains supply voltage and outputting the converted voltage from the voltage conversion circuit output end (134);

alternating current-direct current converting circuit (140), alternating current-direct current converting circuit input end (142) and alternating current-direct current converting circuit output (144) have, alternating current-direct current converting circuit input end (142) with voltage converting circuit output (134) are connected, alternating current-direct current converting circuit output (144) with current input end (201) of detection control circuit (200) are connected, alternating current-direct current converting circuit (140) are used for with the alternating voltage that voltage converting circuit (130) output converts direct current voltage into, and follow the direct current voltage after the conversion alternating current-direct current converting circuit output (144) are exported.

6. The receptacle circuit of claim 5, wherein the power circuit (100) further comprises:

the protection circuit (110) is connected between the input end (132) of the voltage conversion circuit and the live wire L and the zero line N, the protection circuit (110) is provided with a protection circuit input end (112) and a protection circuit output end (114), the protection circuit input end (112) is connected with the live wire L and the zero line N, and the protection circuit (110) is used for performing voltage protection on the voltage conversion circuit (130) and the alternating current-direct current conversion circuit (140);

a filter circuit (120) coupled between the voltage conversion circuit input (132) and the protection circuit (110), the filter circuit (120) having a filter circuit input (122) and a filter circuit output (124), the filter circuit input (122) coupled to the protection circuit output (114); the filter circuit output end (124) is connected to the voltage conversion circuit input end (132), and the filter circuit (120) is configured to filter the mains voltage and output the filtered voltage to the voltage conversion circuit (130).

7. The receptacle circuit of claim 1, wherein the power circuit output (104) comprises a first voltage output (1042) and a second voltage output (1044), the first voltage at the first voltage output (1042) being higher than the second voltage at the second voltage output (1044);

the detection control circuit (200) further comprises:

the controller U1 comprises a first pin (212), a second pin (214), a third pin (216) and a fourth pin (218), wherein the first pin (212) is connected with the first voltage output end (1042), the second pin (214) is connected with the second voltage output end (1044), the third pin (216) is connected with the first elastic piece (310) to obtain the current in the first elastic piece (310), and the fourth pin (218) is connected with the switching device (205) to control the switching device (205) to be disconnected.

8. The receptacle circuit according to claim 7, wherein the switching device (205) is a thyristor TY1, a first terminal of the thyristor TY1 is connected to the live line L, a second terminal of the thyristor TY1 is connected to the first spring plate (310), and a third terminal of the thyristor TY1 is connected to the fourth pin (218); the detection control circuit (200) further comprises:

a transistor Q1, a base of the transistor Q1 is connected to the fourth pin (218), a collector of the transistor Q1 is connected to the third end of the thyristor TY1, and an emitter of the transistor Q1 is connected to the second voltage output terminal (1044);

the resistor R4 is connected between the base of the triode Q1 and the fourth pin (218);

the resistor R5 is connected between the base electrode of the triode Q1 and the emitter electrode of the triode Q1;

and the resistor R6 is connected between the collector of the triode Q1 and the third end of the thyristor TY 1.

9. The receptacle circuit of claim 7, further comprising:

the resistor R7 is connected between the first elastic sheet (310) and the switching device (205), and the third pin (216) is connected with one end, close to the first elastic sheet (310), of the resistor R7.

10. The receptacle circuit of claim 9, further comprising:

an operational amplifier (220) comprising a non-inverting input terminal, an operational amplifier output terminal, a power input terminal and a power output terminal, wherein the non-inverting input terminal is connected with one end of the resistor R7 close to the switching device (205), the inverting input terminal is connected with one end of the resistor R7 close to the first elastic sheet (310), the inverting input terminal is connected with the operational amplifier output terminal, the operational amplifier output terminal is connected with the third pin (216), the power input terminal is connected with the first voltage output terminal (1042), and the power output terminal is connected with a common terminal;

a resistor R8 connected between the non-inverting input terminal and one end of the resistor R7 near the switching device (205);

the resistor R9 is connected between the inverting input end and one end, close to the first elastic sheet (310), of the resistor R7;

the resistor R10 is connected between the inverting input end and the operational amplifier output end;

and the resistor R11 is connected between the operational amplifier output end and the third pin (216).

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