WO2018166453A1

WO2018166453A1 - Socket circuit, socket, and mobile terminal

Info

Publication number: WO2018166453A1
Application number: PCT/CN2018/078885
Authority: WO
Inventors: 杨波
Original assignee: 广东欧珀移动通信有限公司
Priority date: 2017-03-14
Filing date: 2018-03-13
Publication date: 2018-09-20
Also published as: CN107069342A

Abstract

Disclosed are a socket circuit, a socket, and a mobile terminal. The socket circuit comprises a live wire conductive piece, a neutral wire conductive piece, an earth wire conductive piece, a switch device, a control module, and a current inductor. A first end of the switch device is connected with the live wire conductive piece, a second end of the switch device is connected with a live wire of the mains supply, and a third end of the switch device is connected with a control end of the control module; a detection end of the control module is connected with a first end of the current inductor; a second end of the current inductor is connected with the earth wire conductive piece; the neutral wire conductive piece is connected with a neutral wire of the mains supply; the earth wire conductive piece is grounded. The control module is used for detecting the value of a current sensed by the current inductor, and outputting a switching-off signal to the switch device when the current sensed by the current inductor is greater than a preset current value, so as to enable the switch device to be switched off. According to the embodiment of the invention, the socket can prevent the danger of an electric shock when the socket is used for charging a mobile terminal.

Description

Socket circuit, socket and mobile terminal

Technical field

The present invention relates to the field of communications technologies, and in particular, to a socket circuit, a socket, and a mobile terminal.

Background technique

The application of mobile terminals such as smart phones is becoming more and more widespread, and people in modern life are basically a mobile phone. Currently, many mobile phones can be charged by plugging into a socket through a plug on the power adapter. When the user charges the mobile phone with the socket, there is a risk of electric shock if there is leakage inside the socket.

Summary of the invention

The embodiment of the invention provides a socket circuit, a socket and a mobile terminal, which can prevent the risk of electric shock when the mobile terminal is charged by using the socket.

A first aspect of the embodiments of the present invention discloses a socket circuit, including a live wire conductive piece, a neutral wire conductive piece, a ground wire conductive piece, a switch device, a control module, and a current sensor, wherein:

The first end of the switch device is connected to the live wire conductive piece, the second end of the switch device is connected to the live line of the mains, and the third end of the switch device is connected to the control end of the control module, the control module The detecting end is connected to the first end of the current sensor, the second end of the current sensor is connected to the ground conductive sheet, and the neutral wire conductive piece is connected to the neutral line of the mains, the ground line Conductive sheet grounded;

The control module is configured to detect a current induced by the current sensor, and output a shutdown signal to the switch device when the current sensed by the current sensor is greater than a preset current value, so that the switch device is disconnected open.

According to a second aspect of the present invention, a socket includes a socket body and an insulative housing, and the socket body is disposed in the insulative housing, and the socket body is provided with the socket circuit according to the first aspect of the present invention. .

A third aspect of the embodiments of the present invention discloses a mobile terminal, which includes a charging chip, a battery, and a main board. When charging the mobile terminal by using a socket, the charging chip is configured to receive a voltage input from the socket. And charging the battery.

The socket circuit in the embodiment of the invention comprises a live wire conductive piece, a neutral wire conductive piece, a ground wire conductive piece, a switch device, a control module and a current sensor, wherein the first end of the switch device is connected with the live wire conductive piece, and the second end of the switch device Connected to the mains of the mains, the third end of the switchgear is connected to the control end of the control module, the detection end of the control module is connected to the first end of the current sensor, and the second end of the current sensor is connected to the ground conductive strip, the neutral conductive strip Connect the neutral line of the mains, the grounding conductor is grounded; the control module is used to detect the current induced by the current sensor, and output the shutdown signal to the switching device when the current sensed by the current sensor is greater than the preset current value, so that The switchgear is disconnected. In order to prevent the risk of electric shock when the mobile terminal is charged by using the socket, the embodiment of the invention provides a switch device, a control module and a current sensor inside the socket circuit, and the control module is used for detecting the current induced by the current sensor and at the current. When the current sensed by the sensor is greater than the preset current value, the output off signal is output to the switch device, so that the switch device is disconnected, the socket stops charging the mobile terminal, and the mobile terminal can be stopped when the short circuit occurs inside the socket circuit is detected. To avoid the risk of electric shock to the mobile terminal.

DRAWINGS

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the description of the prior art will be briefly described below. Obviously, the drawings in the following description are only It is a certain embodiment of the present invention, and other drawings can be obtained from those skilled in the art without any creative work.

1 is a schematic structural diagram of a socket circuit according to an embodiment of the present invention;

2 is a schematic structural diagram of another socket circuit according to an embodiment of the present invention;

3 is a schematic structural diagram of another socket circuit according to an embodiment of the present invention;

4 is a schematic structural diagram of a mobile terminal according to an embodiment of the present invention;

FIG. 5 is a schematic structural diagram of still another mobile terminal disclosed in the implementation of the present invention.

detailed description

The technical solutions in the embodiments of the present invention are clearly and completely described in the following with reference to the accompanying drawings in the embodiments of the present invention. It is a partial embodiment of the invention, and not all of the embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative efforts are within the scope of the present invention.

The terms "first", "second" and the like in the specification and claims of the present invention and the above drawings are used to distinguish different objects, and are not intended to describe a specific order. Furthermore, the terms "comprises" and "comprising" and "comprising" are intended to cover a non-exclusive inclusion. For example, a process, system, product, or device that comprises a series of steps or units is not limited to the listed steps or units, but optionally also includes steps or units not listed, or alternatively also includes Other steps or units inherent to the process, product, or equipment.

References to "an embodiment" herein mean that a particular feature, structure, or characteristic described in connection with the embodiments can be included in at least one embodiment of the invention. The appearances of the phrases in various places in the specification are not necessarily referring to the same embodiments, and are not exclusive or alternative embodiments that are mutually exclusive. Those skilled in the art will understand and implicitly understand that the embodiments described herein can be combined with other embodiments.

The mobile terminal involved in the embodiments of the present invention may include various handheld devices having wireless communication functions, in-vehicle devices, wearable devices, computing devices, or other processing devices connected to the wireless modem, and various forms of user equipment (User Equipment, UE), mobile station (MS), terminal device, and the like. For convenience of description, the devices mentioned above are collectively referred to as mobile terminals.

The embodiments of the present invention are described in detail below.

Please refer to FIG. 1. FIG. 1 is a schematic structural diagram of a socket circuit according to an embodiment of the present invention. As shown in FIG. 1 , the socket circuit 10 includes a switch device 11 , a control module 12 , a current sensor 13 , and a live wire 14 . , a neutral conductive sheet 15 and a ground conductive sheet 16, wherein:

The first end 111 of the switchgear 11 is connected to the thermal conductive sheet 14, and the second end 112 of the switchgear 11 is connected to the live line of the mains. The third end 113 of the switchgear 11 is connected to the control end 121 of the control module 12, and the control module 12 detects The terminal 122 is connected to the first end 131 of the current sensor 13, the second end 132 of the current sensor 13 is connected to the ground conductive strip 16, the neutral conductive sheet 15 is connected to the neutral line of the mains, and the ground conductive strip 16 is connected to the ground;

The control module 12 is configured to detect the magnitude of the current induced by the current sensor 13, and output a shutdown signal to the switching device 11 when the current induced by the current sensor 13 is greater than the preset current value, so that the switching device 11 is turned off.

In the embodiment of the present invention, the material of the live wire conductive sheet 14, the neutral conductive sheet 15 and the ground conductive sheet 16 may be any conductive metal, for example, a conductive copper sheet. The live wire conductive piece 14, the neutral wire conductive piece 15, and the ground wire conductive piece 16 are used for connection with the plug conductive piece. The switching device 11 can be a switching transistor (eg, an NMOS transistor, a PMOS transistor, etc.), a relay, or the like. The commercial power in the embodiment of the present invention may be 220V, 50Hz alternating current. The control module 12 in the embodiment of the present invention may be internally provided with an independent power source, and the independent power source is used to separately supply power to the control module 12 to ensure that the control module 12 is not interfered by external power sources, and the detection current sensor 13 of the control module 12 is sensed. The accuracy of the current.

The current sensor 13 is configured to detect whether the current on the ground exceeds a preset current value. When the current on the local line exceeds the preset current value, it indicates that a leakage phenomenon occurs inside the socket circuit 10. At this time, the control module 12 outputs a shutdown signal. To the switching device 11, the switching device 11 is turned off, so that the live wire conductive piece inside the socket circuit 10 is disconnected from the commercial power line, and the socket circuit 10 is internally disconnected to prevent electric shock. When the socket circuit 10 is used to charge the mobile terminal (for example, the mobile phone), the control module 12 can stop charging the mobile terminal in time when detecting a short circuit inside the socket circuit 10, thereby avoiding the risk of electric shock of the mobile terminal.

As shown in FIG. 2, FIG. 2 is a schematic structural diagram of another socket circuit according to an embodiment of the present invention. As shown in FIG. 2, the socket circuit 10 includes a switch device 11, a control module 12, a current sensor 13, and a live wire. The sheet 14, the neutral conductive sheet 15, and the ground conductive sheet 16, wherein:

The socket circuit 10 further includes a buzzer 17, and the control end 171 of the buzzer 17 is connected to the output end 123 of the control module 12; the control module 12 is configured to output the bee when the current induced by the current sensor 13 is greater than a preset current value. The signal is sounded to the buzzer 17 to operate the buzzer 17.

In the embodiment of the present invention, when the control module 12 detects that the current induced by the current sensor 13 (ie, the current on the ground line) exceeds the preset current value, not only the shutdown signal is output to the switching device 11, so that the switching device 11 Disconnecting, ensuring the safety of the socket circuit 10, and outputting a buzzer signal to the buzzer 17 to cause the buzzer 17 to operate to remind the user that the socket in which the socket circuit 10 is located has a leakage phenomenon.

Optionally, as shown in FIG. 2, the control module 12 is further configured to periodically detect the current in the current sensor 13, and output an on signal when the current sensed by the current sensor 13 is less than or equal to the preset current value. The switching device 11 is turned on to turn on the switching device 11.

In the embodiment of the present invention, when the control module 12 detects that the current induced by the current sensor 13 is less than or equal to the preset current value, it indicates that the leakage phenomenon inside the socket circuit 10 has been repaired, and at this time, the control module 12 outputs a conduction signal to the switch. The device 11 is turned on to turn the switching device 11 on, so that the socket circuit 10 continues to operate normally.

Optionally, as shown in FIG. 2, the first power input terminal 124 of the control module 12 is connected to the live line of the mains, and the second power input terminal 125 of the control module 12 is connected to the neutral line of the mains.

In the embodiment of the present invention, the control module 12 inside the socket circuit 10 is powered by the mains, and no separate power source is needed to supply power to the control module 12, which can save costs. Of course, when the control module 12 is powered by the mains, the control module 12 can internally provide a transformer, a rectifier module, a filter module, etc., to provide stable and reliable power supply to the control module 12.

Optionally, as shown in FIG. 3, FIG. 3 is a schematic structural diagram of another socket circuit disclosed in the embodiment of the present invention. The control module 12 in FIG. 3 includes a voltage comparator U1. The non-inverting input terminal 122 of the voltage comparator U1 is connected to the first end of the current sensor 13. The inverting input terminal 124 of the voltage comparator U1 is connected to the reference voltage. The voltage comparator U1. The output end 121 is connected to the third end of the switching device. Optionally, the output end of the voltage comparator U1 can also be connected to the control terminal 171 of the buzzer 17.

Optionally, as shown in FIG. 3, the current sensor 13 includes a sensing resistor R1. The first terminal 131 of the sensing resistor R1 is connected to the non-inverting input terminal 122 of the voltage comparator U1, and the second terminal 122 of the sensing resistor R1 is grounded.

The voltage comparator U1 is configured to detect the voltage across the sensing resistor R1, and output a shutdown signal to the switching device 11 when the voltage across the sensing resistor R1 is greater than the reference voltage, so that the switching device 11 is turned off.

The voltage comparator U1 is configured to detect the voltage across the sense resistor R1, and output a turn-on signal to the switching device 11 when the voltage across the sense resistor R1 is less than or equal to the reference voltage to turn the switch device 11 on.

When the current of the current sensor 13 is greater than the preset current value, the current flowing through the sensing resistor R1 increases, and the voltage across the sensing resistor R1 increases. When the voltage across the sensing resistor R1 is greater than the inverting input of the voltage comparator U1. When the reference voltage is input 124, the output terminal 121 of the voltage comparator U1 outputs a high level signal to the switching device 11 to disconnect the switching device 11, ensuring the safe use of the socket 10 and preventing the risk of electric shock. For example, under normal circumstances, the operating current of the current sensor 15 is generally less than 0.5 mA, and the reference voltage input to the inverting input terminal 124 of the voltage comparator U1 is 1 V, then the resistor R1 can be set to 2000 Ω. When the operating current of the current sensor 15 is greater than 0.5 mA, the voltage comparator U1 controls the switching device 11 to be turned off to prevent an electric shock.

Optionally, the control module 12 in FIG. 3 may further include a transformer circuit and a rectification filter circuit for processing the voltage of the mains access and supplying power to the voltage comparator U1. Wherein, the transformer circuit comprises a transformer, the transformer comprises a core, a primary winding and a secondary winding, the primary winding and the secondary winding are wound on the iron core, and the two ends of the primary winding are respectively connected to the neutral line and the live line of the main power, and the secondary Both ends of the winding are connected to a rectifying and filtering circuit. The transformer is used to convert the input high voltage (for example, 220V) alternating current into low voltage alternating current, and the rectifying and filtering circuit is used to convert the low voltage alternating current outputted by the transformer into direct current, which is used to supply voltage to the voltage comparator U1.

Optionally, as shown in FIG. 3, the switch device includes a relay switch, and the third end of the relay switch is connected to the output end of the voltage comparator, the first end of the relay switch is connected to the live wire conductive piece 14, and the second end of the relay switch is connected to the city. Electric fire line.

Optionally, as shown in FIG. 3, the relay switch is a voltage relay.

When the relay switch is a voltage relay, when the current of the current sensor 13 is greater than the preset current value, after the relay switch receives the shutdown signal (high level signal) sent by the control module 12, the relay switch is turned off, that is, the relay switch The connection between the live wire and the live wire conductive piece is broken, and the socket circuit 10 stops working, thereby preventing the electric shock.

Optionally, as shown in FIG. 3, the reference voltage is provided by a reference voltage source.

Optionally, the reference voltage may also be provided by a reference current source and a reference resistor, wherein the reference current source and the reference resistor form a closed loop, and the voltage phase across the reference resistor is a reference voltage.

Wherein, the reference voltage source can provide a stable reference voltage for the voltage comparator U1.

2 is only an example in which the control module 12 includes a voltage comparator. In other embodiments, the control module may also include a current comparator for comparing the current induced by the current sensor 13 (on the sense resistor R1). Current) and reference current size. Wherein, the reference current can be provided by a reference current source.

The current comparator is configured to output a shutdown signal to the switching device 11 when the current induced by the current sensor 13 is greater than the reference current, so that the switching device 11 is turned off.

The current comparator is further configured to output an on signal to the switching device 11 when the current induced by the current sensor 13 is less than or equal to the reference current to turn the switching device 11 on.

In the socket circuit 10 shown in FIG. 3, when the current of the current sensor 13 is greater than the preset current value, the output terminal 121 of the voltage comparator U1 outputs a high level signal to the switching device 11 to disconnect the switching device 11. The socket circuit 10 stops charging the mobile terminal to prevent electric shock.

The embodiment of the invention further provides a socket, the socket comprises a socket body and an insulating casing, and the socket body is disposed in the insulating casing, and the socket body is provided with the socket circuit shown in FIG. 1 or FIG. 2 or FIG.

Referring to FIG. 4, FIG. 4 is a schematic structural diagram of a mobile terminal according to an embodiment of the present invention. As shown in FIG. 4, the mobile terminal 20 includes a charging chip 21, a battery 22, and a motherboard 23, and when the socket is used, the mobile terminal 20 is used. When charging, the charging chip 21 is for receiving the voltage input by the socket and charging the battery 22; when the socket detects a short circuit, the socket stops supplying power to the mobile terminal 20.

In the embodiment of the present invention, when the mobile terminal 20 is charged by using the socket, when the socket detects the short circuit phenomenon, the socket disconnects the voltage input by the commercial power from the mobile terminal 20, and the socket stops supplying power to the mobile terminal 20 to prevent electric shock. The role.

Another embodiment of the present invention provides another mobile terminal. As shown in FIG. 5, FIG. 5 is a schematic structural diagram of still another mobile terminal disclosed in the implementation of the present invention. For the convenience of description, only the parts related to the embodiment of the present invention are shown. The mobile terminal can be any terminal device including a mobile phone, a tablet computer, a PDA (Personal Digital Assistant), a POS (Point of Sales), an in-vehicle computer, and the mobile terminal is used as a mobile phone as an example:

FIG. 5 is a block diagram showing a partial structure of a mobile phone related to a mobile terminal provided by an embodiment of the present invention. Referring to FIG. 5, the mobile phone includes: a radio frequency (RF) circuit 910, a memory 920, an input unit 930, a display unit 940, a sensor 950, an audio circuit 960, a wireless fidelity (WiFi) module 970, and a processor 980. And power supply 990 and other components. Those skilled in the art will appreciate that the handset structure illustrated in Figure 5 does not constitute a limitation to a handset, and may include more or fewer components than those illustrated, or some components may be combined, or different components may be arranged.

The following describes the components of the mobile phone in detail with reference to FIG. 5:

The RF circuit 910 can be used for receiving and transmitting information. Generally, RF circuit 910 includes, but is not limited to, an antenna, at least one amplifier, a transceiver, a coupler, a Low Noise Amplifier (LNA), a duplexer, and the like. In addition, RF circuitry 910 can also communicate with the network and other devices via wireless communication. The above wireless communication may use any communication standard or protocol, including but not limited to Global System of Mobile communication (GSM), General Packet Radio Service (GPRS), Code Division Multiple Access (Code Division). Multiple Access (CDMA), Wideband Code Division Multiple Access (WCDMA), Long Term Evolution (LTE), E-mail, Short Messaging Service (SMS), and the like.

The memory 920 can be used to store software programs and modules, and the processor 980 executes various functional applications and data processing of the mobile phone by running software programs and modules stored in the memory 920. The memory 920 may mainly include a storage program area and a storage data area, wherein the storage program area may store an operating system, an application required for at least one function, and the like; the storage data area may store data created according to usage of the mobile phone, and the like. Moreover, memory 920 can include high speed random access memory, and can also include non-volatile memory, such as at least one magnetic disk storage device, flash memory device, or other volatile solid state storage device.

The input unit 930 can be configured to receive input numeric or character information and to generate key signal inputs related to user settings and function controls of the handset. Specifically, the input unit 930 can include a fingerprint identification module 931 and other input devices 932. The fingerprint identification module 931 can collect fingerprint data of the user. In addition to the fingerprint recognition module 931, the input unit 930 may also include other input devices 932. Specifically, other input devices 932 may include, but are not limited to, one or more of a touch screen, a physical keyboard, function keys (such as volume control buttons, switch buttons, etc.), trackballs, mice, joysticks, and the like.

The display unit 940 can be used to display information input by the user or information provided to the user as well as various menus of the mobile phone. The display unit 940 can include a display screen 941. Alternatively, the display screen 941 can be configured in the form of a liquid crystal display (LCD), an organic light-emitting diode (OLED), or the like. Although in FIG. 5, the fingerprint recognition module 931 and the display screen 941 function as two separate components to implement the input and input functions of the mobile phone, in some embodiments, the fingerprint recognition module 931 and the display screen 941 may be Integrated to achieve the input and playback functions of the phone.

The handset may also include at least one type of sensor 950, such as a light sensor, motion sensor, and other sensors. Specifically, the light sensor may include an ambient light sensor and a proximity sensor, wherein the ambient light sensor may adjust the brightness of the display screen 941 according to the brightness of the ambient light, and the proximity sensor may turn off the display screen 941 and/or when the mobile phone moves to the ear. Or backlight. As a kind of motion sensor, the accelerometer sensor can detect the magnitude of acceleration in all directions (usually three axes). When it is stationary, it can detect the magnitude and direction of gravity. It can be used to identify the gesture of the mobile phone (such as horizontal and vertical screen switching, related Game, magnetometer attitude calibration), vibration recognition related functions (such as pedometer, tapping), etc.; as for the mobile phone can also be configured with gyroscopes, barometers, hygrometers, thermometers, infrared sensors and other sensors, no longer Narration.

An audio circuit 960, a speaker 961, and a microphone 962 can provide an audio interface between the user and the handset. The audio circuit 960 can transmit the converted electrical data of the received audio data to the speaker 961 for conversion to the sound signal by the speaker 961; on the other hand, the microphone 962 converts the collected sound signal into an electrical signal by the audio circuit 960. After receiving, it is converted into audio data, and then processed by the audio data playback processor 980, sent to the other mobile phone via the RF circuit 910, or played back to the memory 920 for further processing.

WiFi is a short-range wireless transmission technology, and the mobile phone can help users to send and receive emails, browse web pages, and access streaming media through the WiFi module 970, which provides users with wireless broadband Internet access. Although FIG. 5 shows the WiFi module 970, it can be understood that it does not belong to the essential configuration of the mobile phone, and may be omitted as needed within the scope of not changing the essence of the invention.

The processor 980 is the control center of the handset, which connects various portions of the entire handset using various interfaces and lines, by executing or executing software programs and/or modules stored in the memory 920, and invoking data stored in the memory 920, executing The phone's various functions and processing data, so that the overall monitoring of the phone. Optionally, the processor 980 may include one or more processing units; preferably, the processor 980 may integrate an application processor and a modem processor, where the application processor mainly processes an operating system, a user interface, an application, and the like. The modem processor primarily handles wireless communications. It will be appreciated that the above described modem processor may also not be integrated into the processor 980.

The handset also includes a power source 990 (such as a battery) that supplies power to the various components. Preferably, the power source can be logically coupled to the processor 980 through a power management system to manage functions such as charging, discharging, and power management through the power management system.

Although not shown, the mobile phone may further include a camera, a Bluetooth module, and the like, and details are not described herein again.

In the above embodiments, the descriptions of the various embodiments are different, and the details that are not detailed in a certain embodiment can be referred to the related descriptions of other embodiments.

In the several embodiments provided herein, it should be understood that the disclosed apparatus may be implemented in other ways. For example, the device embodiments described above are merely illustrative. For example, the division of the unit is only a logical function division. In actual implementation, there may be another division manner, for example, multiple units or components may be combined or may be Integrate into another system, or some features can be ignored or not executed. In addition, the mutual coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection through some interface, device or unit, and may be electrical or otherwise.

The units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, may be located in one place, or may be distributed to multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of the embodiment.

In addition, each functional unit in each embodiment of the present invention may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit. The above integrated unit can be implemented in the form of hardware or in the form of a software functional unit.

The embodiments of the present invention have been described in detail above, and the principles and implementations of the present invention are described in detail herein. The description of the above embodiments is only for helping to understand the core idea of the present invention. The present invention is not limited by the scope of the present invention.

Claims

A socket circuit, comprising: a live wire conductive piece, a neutral wire conductive piece, a ground wire conductive piece, a switch device, a control module, and a current sensor, wherein:

The first end of the switch device is connected to the live wire conductive piece, the second end of the switch device is connected to the live line of the mains, and the third end of the switch device is connected to the control end of the control module, the control module The detecting end is connected to the first end of the current sensor, the second end of the current sensor is connected to the ground conductive sheet, and the neutral wire conductive piece is connected to the neutral line of the mains, the ground line Conductive sheet grounded;

The control module is configured to detect a current induced by the current sensor, and output a shutdown signal to the switch device when the current sensed by the current sensor is greater than a preset current value, so that the switch device is disconnected open.
The socket circuit according to claim 1, wherein said socket circuit further comprises a buzzer, said control end of said buzzer being connected to an output end of said control module; said control module being for said When the current sensed by the current sensor is greater than the preset current value, a buzzer signal is output to the buzzer to operate the buzzer.
The socket circuit according to claim 2, wherein a first power input terminal of the control module is connected to the live line of the mains, and a second power input terminal of the control module is connected to the neutral line of the mains. .
The socket circuit of claim 3, wherein the control module comprises a current comparator for comparing the magnitude of the current induced by the current sensor with a reference current.
The socket circuit according to claim 4, wherein said current comparator is configured to output a shutdown signal to said switching device when said current induced by said current sensor is greater than a reference current to cause said switching device to be disconnected open.
The socket circuit according to claim 3, wherein said control module comprises a voltage comparator, said non-inverting input of said voltage comparator being coupled to said first end of said current inductor, said reverse of said voltage comparator The phase input is connected to a reference voltage, and the output of the voltage comparator is connected to the third end of the switching device.
The socket circuit according to claim 6, wherein the control circuit further comprises a transformer circuit and a rectification filter circuit, wherein the transformer circuit and the rectification filter circuit are configured to process a voltage of the mains access The voltage comparator supplies power.
The socket circuit according to claim 6, wherein the current sensor comprises a sensing resistor, a first end of the sensing resistor is connected to a non-inverting input terminal of the voltage comparator, and a second end of the sensing resistor is Ground.
The socket circuit according to claim 8, wherein the voltage comparator is configured to detect a voltage across the sensing resistor, and output a shutdown signal to a voltage when a voltage across the sensing resistor is greater than the reference voltage The switching device is described to disconnect the switching device.
The socket circuit according to claim 8, wherein the voltage comparator is configured to detect a voltage across the sense resistor, and output a turn-on signal when a voltage across the sense resistor is less than or equal to the reference voltage To the switching device to turn on the switching device.
The socket circuit according to claim 8, wherein the switching device comprises a relay switch, a third end of the relay switch is connected to an output end of the voltage comparator, and a first end of the relay switch is connected The live wire conductive piece is connected to the second end of the relay switch.
The socket circuit of claim 11 wherein said relay switch is a voltage relay.
A socket circuit according to any of claims 4-12, wherein the reference voltage is provided by a reference voltage source.
A socket circuit according to any one of claims 4 to 12, wherein the reference voltage is provided by a reference current source and a reference resistor.
A socket circuit according to any of claims 1-14, wherein said switching device comprises an NMOS transistor or a PMOS transistor.
The socket circuit according to any one of claims 1 to 15, wherein the live wire conductive piece, the neutral wire conductive piece, and the ground wire conductive piece are all conductive copper sheets.
The socket circuit according to any one of claims 1 to 16, wherein the control module is further configured to periodically detect a current in the current sensor, and the current induced in the current sensor is less than When the current value is equal to or equal to the preset current value, an on-signal is output to the switching device to turn on the switching device.
A socket characterized by comprising a socket body and an insulating casing, wherein the socket body is disposed in the insulating casing, and the socket body is provided with the socket circuit according to any one of claims 1 to 17.
A mobile terminal, comprising: a charging chip, a battery, and a main board, wherein when charging the mobile terminal with a socket, the charging chip is configured to receive a voltage input from the socket and charge the battery.
The mobile terminal of claim 19, wherein the outlet stops supplying power to the mobile terminal when the outlet detects a short circuit.