Arc extinguishing circuit for socket and socket
By incorporating a power module, a detection switch, and an arc-extinguishing module into the socket, and using an electronic switch connected in reverse series to control the auxiliary socket, the arcing problem during plug insertion and removal is solved, achieving a stable and universal arc-extinguishing effect.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- WENZHOU CHINT SMART HOME TECHNOLOGY CO LTD
- Filing Date
- 2025-04-23
- Publication Date
- 2026-06-02
AI Technical Summary
Existing sockets generate electric arcs when plugs are inserted or removed under load, which affects their service life and poses safety hazards. Traditional arc extinguishing methods are bulky, complex in structure, and unstable. Existing electronic arc extinguishing methods are only applicable to AC or DC single socket power systems and have low versatility.
The socket arc extinguishing circuit includes a power module, a detection switch, a drive module, and an arc extinguishing module. By detecting the insertion and removal status of the plug pin, two electronic switches connected in reverse series are used to energize and de-energize the auxiliary socket, thereby achieving electronic arc extinguishing of the socket. It is suitable for AC and DC power sockets.
It achieves a stable arc extinguishing effect, has a simple structure and small size, and can be used with both AC and DC power sockets, thus improving the versatility and reliability of arc extinguishing.
Smart Images
Figure CN224318865U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of low-voltage electrical appliances, specifically to an arc-extinguishing circuit for a socket and the socket itself. Background Technology
[0002] Existing AC or DC sockets generate electric arcs when plugs are inserted or removed under load. These arcs affect the lifespan of the socket and may pose safety hazards. Traditional arc-extinguishing methods for sockets generally include arc-extinguishing grids, vacuum arc extinguishing, and magnetic blowout. These methods weaken the arc by elongating or cooling it. These traditional arc-extinguishing technologies suffer from problems such as large size and complex structure. Furthermore, their arc-extinguishing effect is unstable and cannot completely extinguish the arc.
[0003] In recent years, some sockets have also adopted semiconductor power devices for electronic arc extinguishing. When an arc is generated, the arc-free switching characteristic of semiconductor devices is utilized to transfer the arc energy to these semiconductor devices, thereby extinguishing the arc in the socket. Existing electronic arc extinguishing methods have good arc extinguishing effects, but they are generally only applicable to AC or DC single-socket power systems, and their versatility is not high. Utility Model Content
[0004] The purpose of this utility model is to overcome at least one defect of the prior art and provide an arc extinguishing circuit for a socket and a socket.
[0005] To achieve the above objectives, the present invention adopts the following technical solution:
[0006] The arc-extinguishing circuit of the socket includes
[0007] A power module, wherein the input terminal of the power module is connected to a first electrode, and the power module is configured to convert the input power into a low-voltage DC power.
[0008] Detection switch;
[0009] A drive module, wherein the power input terminal of the drive module is connected to the output terminal of the power module, and the detection switch is connected between the output terminal of the power module and the control input terminal of the drive module;
[0010] An arc-extinguishing module is provided, wherein the arc-extinguishing module is connected to a second electrode, and the control terminal of the arc-extinguishing module is connected to the output terminal of a drive module. The drive module is configured to output a control signal in response to the closing of a detection switch to connect the second electrode to the auxiliary socket of the socket, and to output a control signal in response to the opening of a detection switch to disconnect the second electrode from the auxiliary socket of the socket. The arc-extinguishing module includes a first arc-extinguishing switch and a second arc-extinguishing switch. The first poles of the first and second arc-extinguishing switches are connected together as the control terminal of the arc-extinguishing module, which is connected to the output terminal of the drive module. The second poles of the first and second arc-extinguishing switches are connected together and grounded. The third pole of the first arc-extinguishing switch is connected to the auxiliary socket, and the third pole of the second arc-extinguishing switch is connected to the second electrode.
[0011] Optionally, the first arc-extinguishing switch is a MOSFET or an IGBT, and the second arc-extinguishing switch is a MOSFET or an IGBT.
[0012] Optionally, the power module includes
[0013] A rectifier diode, the positive terminal of which serves as the input terminal of the power module and is connected to the first electrode;
[0014] The second resistor has one end connected to the negative terminal of the rectifier diode;
[0015] A Zener diode, wherein the negative terminal of the Zener diode is connected to the other end of the second resistor, and the positive terminal of the Zener diode is grounded;
[0016] A first step-down switch, wherein the first terminal of the first step-down switch is connected to the negative terminal of a Zener diode, and the second terminal of the first step-down switch is connected to the negative terminal of a rectifier diode;
[0017] The second step-down switch has its first terminal connected to the third terminal of the first step-down switch, its second terminal connected to the negative terminal of the rectifier diode, and its third terminal serving as the output terminal of the power module.
[0018] The second capacitor has one end grounded and the other end used as the output terminal of the power module.
[0019] Optionally, the first step-down switch is a transistor, and the second step-down switch is a transistor.
[0020] Optionally, the drive module includes
[0021] The first capacitor has one end serving as the control input terminal of the drive module and connected to the detection switch, while the other end of the first capacitor is grounded.
[0022] The first resistor is connected in parallel across the two ends of the first capacitor;
[0023] The first drive switch has its first pole serving as the control input terminal of the drive module and connected to the detection switch, and its second pole serving as the power input terminal of the drive module and connected to the output terminal of the power module.
[0024] The second drive switch has its first pole serving as the control input terminal of the drive module and connected to the detection switch, while its second pole is grounded.
[0025] The third resistor has its first end connected to the third pole of the first drive switch and the third pole of the second drive switch, and its second end serves as the output terminal of the drive module, connected to the control terminal of the arc extinguishing module.
[0026] Optionally, the first drive switch is a MOSFET or a transistor, and the second drive switch is a MOSFET or a transistor.
[0027] Optionally, the detection switch includes a moving contact and a stationary contact. When the moving contact moves under the drive of the pin, it deforms and comes into contact with the stationary contact. When the action of the pin is removed, the moving contact returns to its original shape and separates from the stationary contact.
[0028] A socket includes an arc-extinguishing assembly, a first power socket, and a second power socket disposed inside the socket. The first power socket and the second power socket are respectively connected to a first electrode and a second electrode. The socket has two sockets corresponding to the first power socket and the second power socket. Two pins of a plug are inserted into the two sockets and make contact with the first power socket and the second power socket respectively. The socket also has an auxiliary socket that shares the same pin contact with the second power socket. The arc-extinguishing circuit of the socket as described in any one of the claims is disposed on the arc-extinguishing assembly. The detection switch in the arc-extinguishing circuit is configured to close after the pins of the plug have contacted the first power socket and the auxiliary socket of the socket and before they have contacted the second power socket, and to open before the pins of the plug have disengaged from the first power socket and the auxiliary socket and after they have disengaged from the second power socket.
[0029] Optionally, the first power socket is located above the second power socket and at the same height as the first power socket.
[0030] This invention relates to an arc-extinguishing circuit and socket. A detection switch detects the insertion and removal status of the plug pin. A drive module, controlled by the detection switch, accelerates the switching on and off of the arc-extinguishing module. Two anti-tandem electronic switches within the arc-extinguishing module energize and de-energize the auxiliary socket, thus achieving electronic arc extinguishing. This method offers excellent arc extinguishing performance and stable operation. Furthermore, the use of two anti-tandem electronic switches in the arc-extinguishing module makes it suitable for both AC and DC power sockets, offering high versatility. Compared to ordinary sockets, it only adds an auxiliary socket and an arc-extinguishing component, resulting in a simple structure, small size, and applicability to various types of sockets.
[0031] In addition, the rectifier diodes in the power module and the body diode of the second arc-extinguishing switch form a half-wave rectifier circuit, making it more suitable for AC power. Furthermore, the power module uses two series-connected electronic switches to form a series voltage regulator circuit, which has high voltage regulation accuracy and ensures the stability of the output voltage.
[0032] In addition, the drive module uses two complementary electronic switches to form a push-pull circuit, which can accelerate the switching on and off of the arc extinguishing module and improve the reliability of the socket's arc extinguishing function. Attached Figure Description
[0033] Figure 1 This is a block diagram of the arc-extinguishing structure of the socket of this utility model;
[0034] Figure 2 This is a schematic diagram of the arc-extinguishing structure of the socket of this utility model;
[0035] Figure 3 This is a block diagram of the arc-extinguishing principle system of the socket of this utility model;
[0036] Figure 4 This is a circuit diagram of the power module of this utility model.
[0037] Figure 5 This is a circuit diagram of the specific implementation of the driving module of this utility model.
[0038] First power socket J1; Second power socket J2; Auxiliary socket J3;
[0039] Arc extinguishing component 100;
[0040] Rectifier diode D1; Second resistor R2; Zener diode D2; First buck switch Q5; Second buck switch Q6; Second capacitor C2;
[0041] Detection switch S1; moving contact 200; stationary contact 300;
[0042] First capacitor C1; First resistor R1; First drive switch Q3; Second drive switch Q4; Third resistor R3;
[0043] First arc-extinguishing switch Q1; second arc-extinguishing switch Q2. Detailed Implementation
[0044] The following description, in conjunction with the accompanying drawings, further illustrates the arc-extinguishing circuit of the socket and the specific implementation of the socket according to this utility model. The arc-extinguishing circuit and socket of this utility model are not limited to the description in the following embodiments.
[0045] refer to Figure 1 and Figure 2 The socket typically has a first power socket J1 and a second power socket J2 inside. The first power socket J1 and the second power socket J2 are connected to the first electrode and the second electrode respectively to provide input power to the socket. The socket usually has at least two sockets, namely the first socket corresponding to the first power socket J1 and the second socket corresponding to the second power socket J2. The plug of the load includes two pins, namely the first pin that cooperates with the first socket and the second pin that cooperates with the second socket. The two pins of the plug are inserted into the two sockets and contact the first power socket J1 and the second power socket J2 respectively.
[0046] like Figure 1 and Figure 2 As shown, the socket in this embodiment is further provided with an arc-extinguishing component 100 and an auxiliary sleeve J3. The auxiliary sleeve J3, the arc-extinguishing component 100, the first power sleeve J1 and the second power sleeve J2 form the arc-extinguishing structure of the socket. The auxiliary sleeve J3 and the second power sleeve J2 are both provided corresponding to the second socket, that is, the auxiliary sleeve J3 and the second power sleeve J2 are used together to contact the second pin. For example, the auxiliary sleeve J3 is provided above the second power sleeve J2. The first power sleeve J1 is provided separately corresponding to the first socket, that is, the first power sleeve J1 is used separately to contact the first pin.
[0047] During the process of inserting the plug into the socket, the second pin of the plug first contacts the auxiliary sleeve J3 and the first pin of the plug contacts the first power sleeve J1. Then the second pin contacts the second power sleeve J2. The contact between the first pin and the first power sleeve J1 can occur before, during, or after the contact between the second pin and the auxiliary sleeve J3. During the process of pulling the plug out of the socket, the second pin first disengages from the second power sleeve J2, then the second pin disengages from the auxiliary sleeve J3 and the first pin disengages from the first power sleeve J1. The disengagement of the first pin from the first power sleeve J1 can occur before, during, or after the disengagement of the second pin from the auxiliary sleeve J3. Preferably, the auxiliary socket J3 is located above the second power socket J2 and is at the same height as the first power socket J1. That is, when the plug is inserted into the socket hole, the first plug contacts the first power socket J1 while the second plug contacts the auxiliary socket J3; when the plug is pulled out of the socket hole, the first plug disengages from the first power socket J1 while the second plug disengages from the auxiliary socket J3.
[0048] In some embodiments, the socket is further provided with a ground electrode sleeve inside, and correspondingly, the socket is also provided with a ground electrode socket corresponding to the ground electrode sleeve, and the ground electrode pin of the plug is inserted into the ground electrode socket and contacts the ground electrode sleeve.
[0049] like Figure 3 As shown, the improvement of this application lies in the arc-extinguishing circuit of the socket, which is disposed on the arc-extinguishing assembly 100, including...
[0050] A power module, wherein the input terminal of the power module is connected to a first electrode, and the power module is configured to convert the input power into a low-voltage DC power.
[0051] The detection switch S1 is configured to close after the plug pin contacts the first power socket J1 and the auxiliary socket J3 of the socket and before it contacts the second power socket J2, and to open before the plug pin disengages from the first power socket J1 and the auxiliary socket J3 and after it disengages from the second power socket J2; that is, during the process of the plug being inserted into the socket, after the second pin contacts the auxiliary socket J3 and before it contacts the second power socket J2, the second pin directly or indirectly drives the detection switch S1 to close; during the process of the plug being pulled out of the socket, after the second pin disengages from the second power socket J2 and before it disengages from the auxiliary socket J3, the detection switch S1 opens.
[0052] The driving module has its power input terminal connected to the output terminal of the power module, and the detection switch S1 is connected between the output terminal of the power module and the control input terminal of the driving module.
[0053] An arc-extinguishing module is provided, which is connected to a second electrode. The control terminal of the arc-extinguishing module is connected to the output terminal of a drive module. The drive module is configured to output a control signal in response to the closing of the detection switch S1, causing the arc-extinguishing module to quickly connect the second electrode to the auxiliary socket J3 of the socket. Since the second power socket J2 is powered on after the plug pin has made good contact with the first power socket J1 and the auxiliary socket J3, arc extinguishing is achieved. The drive module is also configured to output a control signal in response to the opening of the detection switch S1, causing the arc-extinguishing module to quickly disconnect the second electrode from the auxiliary socket J3 of the socket. Since the second power socket J2 is de-energized while the plug pin still has good contact with the first power socket J1 and the auxiliary socket J3, arc extinguishing is completed.
[0054] In this embodiment, the arc extinguishing module includes a first arc extinguishing switch Q1 and a second arc extinguishing switch Q2. The first pole of the first arc extinguishing switch Q1 and the first pole of the second arc extinguishing switch Q2 are connected together as the control terminal of the arc extinguishing module and connected to the output terminal of the drive module. The second pole of the first arc extinguishing switch Q1 and the second pole of the second arc extinguishing switch Q2 are connected together and grounded. The third pole of the first arc extinguishing switch Q1 is connected to the auxiliary socket J3, and the third pole of the second arc extinguishing switch Q2 is connected to the second electrode.
[0055] The input power supply can be an AC power supply, with the first electrode being the live wire (L pole) and the second electrode being the neutral wire (N pole). Alternatively, the first electrode can be the neutral wire (N pole) and the second electrode can be the live wire (L pole). The input power supply can also be a DC power supply, with the first electrode being V+ (positive pole) and the second electrode being V- (negative pole). Alternatively, the first electrode can be V- (negative pole) and the second electrode can be V+ (positive pole).
[0056] During the insertion of the plug into the socket, the plug pin first contacts the auxiliary socket J3 and the first power socket J1, then drives the detection switch S1 to close, thereby controlling the drive module to activate the first arc-extinguishing switch Q1 and the second arc-extinguishing switch Q2 of the arc-extinguishing module. That is, the power circuit formed by the auxiliary socket J3 and the first power socket J1 is activated, so that the load is powered on under the premise that the plug pin has formed a good connection with the first power socket J1 and the auxiliary socket J3, in order to avoid the generation of an electric arc. Finally, the plug pin contacts the second power socket J2, and the power circuit formed by the first power socket J1 and the second power socket J2 is activated. Since the arc-extinguishing module is short-circuited, the arc-extinguishing module will not heat up due to the large current passing through the load, thus ensuring the reliability of the arc-extinguishing module.
[0057] During the process of unplugging the plug from the socket, the plug pin, under the premise that a good connection has been formed with the first power socket J1 and the auxiliary socket J3 (that is, the auxiliary socket J3 is still connected to the second power socket J2 through the arc extinguishing module), first disconnects from the second power socket J2, and then drives the detection switch S1 to open to control the first arc extinguishing switch Q1 and the second arc extinguishing switch Q2 of the arc extinguishing module, that is, disconnects the auxiliary socket J3 from the first power socket J1, so that the load is de-energized to avoid the generation of an electric arc. Thus, the plug pin finally disconnects from the first power socket J1 and the auxiliary socket J3 under the premise that the load has been de-energized to avoid the generation of an electric arc.
[0058] The arc-extinguishing circuit and socket of this embodiment detect the insertion and removal status of the plug pin through a detection switch S1. The drive module is controlled by the detection switch S1 to accelerate the on / off switching of the arc-extinguishing module. By using two anti-tandem electronic switches in the arc-extinguishing module to energize and de-energize the auxiliary socket J3, the electronic arc extinguishing of the socket can be achieved. This method has good arc extinguishing effect and stable operation. Furthermore, the arc-extinguishing module uses two anti-tandem electronic switches, which can be used for both AC and DC power sockets, making it highly versatile. Moreover, compared with ordinary sockets, only an auxiliary socket J3 and an arc-extinguishing component 100 are added, resulting in a simple structure, small size, and applicability to various types of sockets.
[0059] Preferably, the first arc-extinguishing switch Q1 is a MOSFET or an IGBT, and the second arc-extinguishing switch Q2 is a MOSFET or an IGBT.
[0060] Specifically, in this embodiment, the first arc-extinguishing switch Q1 and the second arc-extinguishing switch Q2 are MOSFETs. The gates of the first arc-extinguishing switch Q1 and the second arc-extinguishing switch Q2 are connected as the control terminal of the arc-extinguishing module, which is connected to the output terminal of the drive module. The sources of the first arc-extinguishing switch Q1 and the second arc-extinguishing switch Q2 are connected to ground. The drain of the first arc-extinguishing switch Q1 is connected to the auxiliary socket J3, and the drain of the second arc-extinguishing switch Q2 is connected to the second electrode. Using MOSFET semiconductor devices provides stable electronic arc extinguishing performance.
[0061] like Figure 4 As shown, the power module in this embodiment includes
[0062] A rectifier diode D1, the positive terminal of which serves as the input terminal of the power module and is connected to the first electrode;
[0063] The second resistor R2 has one end connected to the negative terminal of the rectifier diode D1;
[0064] Zener diode D2, the negative terminal of which is connected to the other end of the second resistor R2, and the positive terminal of which is grounded;
[0065] The first step-down switch Q5 has its first terminal connected to the negative terminal of the Zener diode D2, and its second terminal connected to the negative terminal of the rectifier diode D1.
[0066] The second step-down switch Q6 has its first terminal connected to the third terminal of the first step-down switch Q5, its second terminal connected to the negative terminal of the rectifier diode D1, and its third terminal serving as the output terminal of the power module.
[0067] The second capacitor C2 has one end grounded and the other end serving as the output terminal of the power module.
[0068] In this embodiment, the rectifier diode D1 and the body diode of the second arc-extinguishing switch Q2 form a half-wave rectifier circuit, making it better suited for AC power. Furthermore, the power module uses two series-connected electronic switches to form a series voltage regulator circuit, ensuring high voltage regulation accuracy and output voltage stability. Of course, other switching power supply circuits can also be used in the power module.
[0069] Preferably, the first step-down switch Q5 is a transistor, and the second step-down switch Q6 is a transistor.
[0070] Specifically, in this embodiment, the first buck switch Q5 and the second buck switch Q6 are NPN transistors. The base of the first buck switch Q5 is connected to the negative terminal of the Zener diode D2, and the collector of the first buck switch Q5 is connected to the negative terminal of the rectifier diode D1. The base of the second buck switch Q6 is connected to the emitter of the first buck switch Q5, and the collector of the second buck switch Q6 is connected to the negative terminal of the rectifier diode D1. The emitter of the second buck switch Q6 serves as the output terminal of the power module.
[0071] like Figure 5 As shown, the driver module in this embodiment includes
[0072] The first capacitor C1 has one end serving as the control input terminal of the drive module and connected to the detection switch, while the other end of the first capacitor C1 is grounded.
[0073] The first resistor R1 is connected in parallel across the two ends of the first capacitor C1;
[0074] The first drive switch Q3 has its first pole serving as the control input terminal of the drive module and connected to the detection switch, and its second pole serving as the power input terminal of the drive module and connected to the output terminal of the power module.
[0075] The second drive switch Q4 has its first terminal serving as the control input terminal of the drive module and connected to the detection switch, while its second terminal is grounded.
[0076] The third resistor R3 has its first end connected to the third pole of the first drive switch Q3 and the third pole of the second drive switch Q4, and its second end serves as the output terminal of the drive module, connected to the control terminal of the arc extinguishing module.
[0077] The drive module in this embodiment uses two complementary electronic switches to form a push-pull circuit, which can accelerate the switching on and off of the arc extinguishing module and improve the reliability of the socket's arc extinguishing function.
[0078] Preferably, the first drive switch Q3 is a MOSFET or a transistor, and the second drive switch Q4 is a MOSFET or a transistor.
[0079] Specifically, in this embodiment, the first driving switch Q3 is an NPN transistor. The base of the first driving switch Q3 serves as the control input terminal of the driving module and is connected to the detection switch. The collector of the first driving switch Q3 serves as the power input terminal of the driving module and is connected to the output terminal of the power module. The emitter of the first driving switch Q3 is connected to the first terminal of the third resistor R3.
[0080] In this embodiment, the second drive switch Q4 is a PNP transistor. The base of the second drive switch Q4 serves as the control input terminal of the drive module and is connected to the detection switch. The collector of the second drive switch Q4 is grounded, and the emitter of the second drive switch Q4 is connected to the first terminal of the third resistor R3.
[0081] The detection switch S1 in this embodiment includes a moving contact 200 and a stationary contact 300. When the moving contact 200 moves under the drive of the pin, it deforms and comes into contact with the stationary contact 300. When the action of the pin is removed, the moving contact 200 returns to its original shape and separates from the stationary contact 300. In this embodiment, the pin drives the moving contact 200 through an insulating component to avoid direct contact between the pin and the moving contact 200. This is prior art in the field and will not be described in detail here.
[0082] In another embodiment, the detection switch S1 can also be a micro switch, which is in an open state when not triggered by the pin and in a closed state when triggered by the pin.
[0083] Taking an AC power input socket as an example, the arc-extinguishing working principle of the socket is explained in detail below:
[0084] When the socket is powered on and the plug is not inserted, the detection switch S1 is not triggered and is in the open state. The signal IN in the drive module is low voltage. At this time, the drive module will not output drive voltage, the arc extinguishing module is not conducting, and the auxiliary socket J3 is in the floating state.
[0085] When the power module operates in the positive half-cycle of the AC power supply, the L terminal is rectified by the rectifier diode D1, and then stepped down by the power module before passing through the body diode of the second arc-extinguishing switch Q2 to the N terminal, forming a complete power supply circuit and obtaining the low-voltage DC power supply VCC. When the power module operates in the negative half-cycle of the AC power supply, the power module does not work due to the unidirectional conduction characteristic of the body diode of the second arc-extinguishing switch Q2.
[0086] The process of inserting a plug into a socket:
[0087] When the plug is first inserted, it first contacts the auxiliary socket J3 and the first power socket J1. At this time, the detection switch S1 is not triggered and is in the open state. The first arc extinguishing switch Q1 and the second arc extinguishing switch Q2 are not conducting. Furthermore, due to the unidirectional conduction characteristic of the body diode of the first arc extinguishing switch Q1, the power circuit will not be conducted either. That is, the auxiliary socket J3 is in the floating state. Therefore, the load is not energized at this time, and the socket will not generate an electric arc.
[0088] The plug pin continues to be inserted until it forms a good connection with the auxiliary socket J3 and the first power socket J1. At this time, the pin trigger detection switch S1 closes, the signal IN voltage in the drive module is VCC, the first drive switch Q3 is turned on, and thus the signal OUT voltage in the drive module is VCC-Q2 conduction voltage drop. That is, the drive voltage output by the drive module is greater than the opening voltage of the first arc extinguishing switch Q1 and the second arc extinguishing switch Q2, so that the first arc extinguishing switch Q1 and the second arc extinguishing switch Q2 are turned on, the power circuit formed by the auxiliary socket J3 and the first power socket J1 is turned on, and the load is powered on. Since the plug pin has formed a good connection with the first power socket J1 and the auxiliary socket J3 at this time, the socket will not generate an electric arc.
[0089] When the plug pin continues to be inserted into contact with the second power socket J2, the power circuit formed by the connection between the first power socket J1 and the second power socket J2 is turned on. Since the arc extinguishing module is short-circuited, the arc extinguishing module will not heat up due to the large current passing through the load, thus ensuring the reliability of the arc extinguishing module.
[0090] At this point, the arc extinguishing process of inserting the plug into the socket is complete.
[0091] The process of unplugging a plug from a socket:
[0092] When the plug pin is pulled out, it first disconnects from the second power socket J2. At this time, the auxiliary socket J3 is still connected to the second power socket J2 through the arc extinguishing module, and the plug pin is still well connected to the first power socket J1 and the auxiliary socket J3. The load current forms a circuit through the arc extinguishing module, so the socket will not generate an electric arc.
[0093] As the plug pin continues to be pulled out until the trigger detection switch S1 is turned off, the signal IN in the drive module is pulled down to ground through the first resistor R1, the second drive switch Q4 is turned on, and the signal OUT in the drive module becomes a low voltage, which is less than the opening voltage of the first arc extinguishing switch Q1 and the second arc extinguishing switch Q2. As a result, the first arc extinguishing switch Q1 and the second arc extinguishing switch Q2 are turned off, the auxiliary socket J3 enters a floating state, and the load is de-energized. At this time, the plug pin is still well connected to the first power socket J1 and the auxiliary socket J3, and the socket will not generate an electric arc.
[0094] Continue pulling the plug pin out until it is completely disconnected from the first power socket J1 and the auxiliary socket J3. At this point, the load has been de-energized and the socket will not generate an electric arc.
[0095] At this point, the arc extinguishing process of unplugging the plug from the socket is complete.
[0096] It should be noted that when the socket input power is DC power, the circuit works in the same way as when the AC power is in the positive half-cycle, which will not be elaborated here.
[0097] It should be noted that in the description of this utility model, the terms "upper," "lower," "left," "right," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used during use. They are only for ease of description and do not indicate that the device or component referred to must have a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating relative importance.
[0098] The above description, in conjunction with specific preferred embodiments, provides a further detailed explanation of the present invention. It should not be construed that the specific implementation of the present invention is limited to these descriptions. For those skilled in the art, various simple deductions or substitutions can be made without departing from the concept of the present invention, and all such modifications and substitutions should be considered within the protection scope of the present invention.
Claims
1. An arc-extinguishing circuit for a socket, characterized in that: include A power module, wherein the input terminal of the power module is connected to a first electrode, and the power module is configured to convert the input power into a low-voltage DC power. Detection switch (S1); The driving module has its power input terminal connected to the output terminal of the power module, and the detection switch (S1) is connected between the output terminal of the power module and the control input terminal of the driving module. An arc-extinguishing module is provided, wherein the arc-extinguishing module is connected to a second electrode, and the control terminal of the arc-extinguishing module is connected to the output terminal of a drive module. The drive module is configured to output a control signal in response to the closing of a detection switch (S1) to connect the second electrode to the auxiliary socket (J3) of the socket, and to output a control signal in response to the opening of the detection switch (S1) to disconnect the second electrode from the auxiliary socket (J3) of the socket. The arc-extinguishing module includes a first arc-extinguishing switch (Q1) and a second arc-extinguishing switch (Q2). The first pole of the first arc-extinguishing switch (Q1) and the first pole of the second arc-extinguishing switch (Q2) are connected together as the control terminal of the arc-extinguishing module and connected to the output terminal of the drive module. The second pole of the first arc-extinguishing switch (Q1) and the second pole of the second arc-extinguishing switch (Q2) are connected together and grounded. The third pole of the first arc-extinguishing switch (Q1) is connected to the auxiliary socket (J3), and the third pole of the second arc-extinguishing switch (Q2) is connected to the second electrode.
2. The arc-extinguishing circuit of the socket according to claim 1, characterized in that: The first arc-extinguishing switch (Q1) is a MOSFET or an IGBT, and the second arc-extinguishing switch (Q2) is a MOSFET or an IGBT.
3. The arc-extinguishing circuit of the socket according to claim 1, characterized in that: The power module includes A rectifier diode (D1) is used, with its positive terminal serving as the input terminal of the power module and connected to the first electrode. The second resistor (R2) has one end connected to the negative terminal of the rectifier diode (D1); A Zener diode (D2) is provided, with its cathode connected to the other end of a second resistor (R2) and its anode grounded. The first step-down switch (Q5) has its first terminal connected to the negative terminal of the Zener diode (D2), and its second terminal connected to the negative terminal of the rectifier diode (D1). The second step-down switch (Q6) has its first terminal connected to the third terminal of the first step-down switch (Q5), its second terminal connected to the negative terminal of the rectifier diode (D1), and its third terminal serving as the output terminal of the power module. The second capacitor (C2) has one end grounded and the other end serving as the output terminal of the power module.
4. The arc-extinguishing circuit of the socket according to claim 3, characterized in that: The first step-down switch (Q5) is a transistor, and the second step-down switch (Q6) is a transistor.
5. The arc-extinguishing circuit of the socket according to claim 1, characterized in that: The drive module includes The first capacitor (C1) has one end serving as the control input terminal of the drive module and connected to the detection switch, while the other end of the first capacitor (C1) is grounded. The first resistor (R1) is connected in parallel across the two ends of the first capacitor (C1); The first drive switch (Q3) has its first pole serving as the control input terminal of the drive module and connected to the detection switch, and its second pole serving as the power input terminal of the drive module and connected to the output terminal of the power module. The second drive switch (Q4) has its first pole serving as the control input terminal of the drive module and connected to the detection switch, while its second pole is grounded. The third resistor (R3) has its first end connected to the third pole of the first drive switch (Q3) and the third pole of the second drive switch (Q4). The second end of the third resistor (R3) serves as the output terminal of the drive module and is connected to the control terminal of the arc extinguishing module.
6. The arc-extinguishing circuit of the socket according to claim 5, characterized in that: The first drive switch (Q3) is a MOSFET or a transistor, and the second drive switch (Q4) is a MOSFET or a transistor.
7. The arc-extinguishing circuit of the socket according to claim 1, characterized in that: The detection switch (S1) includes a moving contact (200) and a stationary contact (300). When the moving contact (200) moves under the drive of the pin, it deforms and comes into contact with the stationary contact (300). When the action of the pin is removed, the moving contact (200) returns to its original state and separates from the stationary contact (300).
8. A socket, comprising an arc-extinguishing assembly (100) disposed inside the socket, a first power socket (J1) and a second power socket (J2), wherein the first power socket (J1) and the second power socket (J2) are correspondingly connected to a first electrode and a second electrode, the socket having two sockets corresponding to the first power socket (J1) and the second power socket (J2), wherein two pins of a plug are inserted into the two sockets and correspondingly contact the first power socket (J1) and the second power socket (J2), characterized in that: The socket is further provided with an auxiliary sleeve (J3) that shares the same pin contact with the second power socket (J2). The arc extinguishing circuit of the socket as described in any one of claims 1-7 is provided on the arc extinguishing assembly (100). The detection switch (S1) in the arc extinguishing circuit is configured to close after the plug pin contacts the first power socket (J1) and the auxiliary sleeve (J3) of the socket and before it contacts the second power socket (J2), and to open before the plug pin disengages from the first power socket (J1) and the auxiliary sleeve (J3) and after it disengages from the second power socket (J2).
9. The socket according to claim 8, characterized in that: The first power socket (J1) is located above the second power socket (J2) and is at the same height as the first power socket (J1).