Special safety plug and socket for charging and discharging of new energy automobile

Abstract

The invention discloses a safety plug and socket special for charging and discharging of a new energy automobile, which comprises a charging gun plug, the charging gun plug is respectively provided with a three-pin insertion piece I and two cylindrical grooves, and probes are fixed in the cylindrical grooves; a slot matched with the charging gun plug is formed in one side of the conversion plug, the charging gun plug is connected with the slot in a pluggable mode, a three-pin jack matched with the first three-pin insertion piece and two protruding columns connected with the two cylindrical grooves in a pluggable mode one by one are arranged in the slot, spring needles are fixed in the protruding columns, and the spring needles are connected with the two cylindrical grooves in a pluggable mode. The other side corresponding to the conversion plug is an external plugging area, a resistor and ground wire hardware are fixed in the conversion plug, two ends of the ground wire hardware are respectively in one-to-one correspondence with the ground wire hole site on the three-pin jack and the external plugging area, one end of the spring needle is in contact conduction with the corresponding probe, and the other end of the spring needle is electrically connected with the ground wire hardware through the resistor. The device has the beneficial effect that the purpose of improving the use convenience is achieved.

Description

Technical Field

[0001] The present invention relates to the technical field related to special safety plugs and sockets for charging and discharging, and in particular to a special safety plug and socket for charging and discharging of new energy vehicles. Background Art

[0002] New energy vehicles (NEVs) use unconventional fuels as their power source (or use conventional fuels with new onboard power units), integrating advanced technologies in vehicle power control and drive to create vehicles with new technologies and structures. New energy vehicles include pure electric vehicles, extended-range electric vehicles, hybrid vehicles, fuel cell electric vehicles, and hydrogen engine vehicles. The current concept of new energy vehicles can be broadly understood as converting various forms of energy into electricity, using its own batteries to drive the motor to propel the vehicle, while also allowing the large-capacity batteries to discharge energy externally.

[0003] In the existing technology, in order to meet the needs of daily discharge of new energy vehicles or to adapt to charging with sockets of different rated currents (the rated current of power sockets is generally 10A or 16A), the electric guns equipped with new energy vehicles are often connected to plugs of corresponding specifications by plugging in to perform corresponding work. Therefore, it is necessary to set a plug interface on the cable connected to the electric gun to accommodate plugs of different specifications, which makes the processing technology of the electric gun complicated and requires different plugs for use, resulting in inconvenience in use. Summary of the Invention

[0004] The present invention aims to overcome the shortcomings of the existing technology that electric guns are not convenient to use for external charging and discharging, and provides a special safety plug and socket for charging and discharging of new energy vehicles that is conducive to improving the convenience of use.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions: A special safety plug and socket for charging and discharging new energy vehicles, comprising: A charging gun plug, wherein the charging gun plug is provided with a three-pin plug and two cylindrical slots, wherein probes are fixed in the cylindrical slots; A conversion plug is provided on one side of the conversion plug with a slot that matches the charging gun plug, and the charging gun plug is pluggably connected to the slot. The slot is respectively provided with a three-pin socket that matches the three-pin plug piece and two bosses that are pluggably connected to the two cylindrical slots one by one. A spring pin is fixed in the boss. The other side corresponding to the conversion plug is an external plug-in area. A resistor and ground wire hardware are fixed in the conversion plug. The two ends of the ground wire hardware respectively correspond to the ground wire hole position and the external plug-in area on the three-pin socket. One end of the spring pin is in contact with the corresponding probe and is conductive, and the other end of the spring pin is electrically connected to the ground wire hardware through the resistor. The default rated current of the charging gun plug is basically 16A. When it needs to be matched with a 10A external socket for charging, or for external discharge, it can be done through a conversion plug; in the process of inserting the charging gun plug into the slot of the conversion plug, the triangular plug piece is inserted into the triangular socket at the same time, and the convex column is inserted into the corresponding cylindrical groove to transmit signals with the corresponding probe through the spring pin, so that the charging gun plug can receive the corresponding signal for discharge or enable the charging gun to recognize 10A current, and after switching the output current to 10A, it can be plugged into an ordinary socket for charging and use through the conversion plug, thereby improving the safety of use. The present invention does not require frequent replacement of different plugs, and current switching or discharge can be achieved through the conversion plug, thereby achieving the purpose of improving convenience of use; at the same time, the convex column is set in the slot, which is also conducive to preventing other ordinary plugs from being inserted, thereby improving safety of use.

[0006] Preferably, the charging gun plug is provided with a waterproof ring and a locking cover. The waterproof ring is fixedly connected to the outer wall of the charging gun plug. The locking cover is sleeved on the outside of the charging gun plug and is rotatably connected to the charging gun plug. After one end of the charging gun plug is inserted into the slot, it is locked by the locking cover and the outer wall of the slot. The waterproof ring is sealed with the open end of the slot under the pressure of the locking cover. The other end of the charging gun plug is fixed with a cable that is electrically connected to the triangular plug and the probe respectively. The charging gun plug is directly connected to the charging gun through the cable, eliminating the need for a plug interface on the cable to meet the daily needs of the charging gun, thereby simplifying the processing of the charging gun. After the charging gun plug is inserted into the slot of the conversion plug, it is locked by the locking cover, which prevents the charging gun plug from falling off. At the same time, the waterproof ring can seal the gap between the charging gun plug and the slot, which is conducive to ensuring the waterproof effect when the charging gun plug and the conversion plug are mated.

[0007] Preferably, the outer side wall of the slot is provided with two or more L-shaped lock grooves evenly distributed along the circumference of the slot, the L-shaped lock groove is located at the open end of the slot, and the inner side wall of the lock cover is provided with two or more locking blocks that match the L-shaped lock grooves one by one, and the lock cover is provided with a step surface corresponding to the waterproof ring. After one end of the charging gun plug is inserted into the slot, the lock cover is inserted into one end of the corresponding L-shaped lock groove through the locking block, and then the lock cover is rotated to drive the locking block to rotate synchronously and squeeze into the other end of the L-shaped lock groove to be locked. The waterproof ring seals the open end of the slot under the pressure of the step surface. After the charging gun plug is inserted into the slot of the conversion plug, the user pushes the lock cover downward until the lock block on the lock cover is inserted into one end of the L-shaped lock groove and can no longer be pushed down. Then rotate the lock cover to make the lock block rotate synchronously to the other end of the L-shaped lock groove. During the rotation process, the lock block is first squeezed by the side wall of the L-shaped lock groove and then enters the other end of the L-shaped lock groove, so that the lock block is limited without external force. The structure is simple and easy to operate. This structure is a commonly used locking structure, so it will not be described in detail here.

[0008] Preferably, the charging gun plug includes a bracket plate, the three-pin plug piece 1 is fixedly connected to the bracket plate and is located on one side of the bracket plate, a toggle switch is also provided on one side of the bracket plate, and a cover shell and an encapsulated body are respectively provided on the other side of the bracket plate, the cover shell is located on the side of the three-pin plug piece 1, the cover shell is fixedly connected to the bracket plate and forms an isolation cavity, a circuit board is provided in the isolation cavity, the toggle switch is electrically connected to the cable through the circuit board, the toggle switch is located in the isolation cavity, the cover shell is located in the encapsulated body, and the bracket plate is fixedly connected to the cable after being encapsulated by the encapsulated body and forms a whole, which is beneficial to improving the waterproof and dustproof effect inside the charging gun plug, as well as the strength of the charging gun plug, and is convenient for repeated plugging and unplugging. The waterproof ring is located on the encapsulated body and forms an integral body with the encapsulated body, which is beneficial to ensuring the waterproof effect. When some sockets do not have a ground signal, the charging gun cannot charge the car. Therefore, a toggle switch is provided in the present invention. The user toggles the toggle switch to generate an analog ground signal through the circuit board, so that some sockets without a ground signal recognize the signal, thereby enabling the charging gun to charge, further improving the convenience of use; the cover isolates the circuit board and the toggle switch, which helps prevent plastic from entering during injection molding and affecting the normal use of the circuit board and the toggle switch.

[0009] Preferably, the conversion plug is detachably connected to a door frame 1, and a tripod hole corresponding to the tripod socket is provided on the door frame 1. The ground wire hardware is located on one side of the door frame 1, and one end of the ground wire hardware is located in the external plug-in area. The other end of the ground wire hardware is integrally formed with a ground wire clamping body 1 corresponding to the ground wire hole position on the tripod hole. The spring pin and the resistor are both located on the other side corresponding to the door frame 1, one end of the spring pin is located in the boss, and the other end of the spring pin is fixedly connected to the door frame 1, one end of the resistor is fixedly connected to the spring pin, and the other end of the resistor is fixed with a connecting piece electrically connected to the ground wire hardware. The other side corresponding to the door frame 1 is provided with a safety door 1 covering the live wire hole position and the neutral wire hole position on the tripod hole respectively, and the safety door 1 is elastically slidably connected to the door frame 1 under the drive of the tripod plug piece 1. In the initial state, the safety door 1 completely covers the live wire hole and the neutral wire hole on the tripod hole under the action of elasticity, which is beneficial to prevent other foreign objects from being inserted, thereby improving safety in use; the combined use of the door frame 1 and the safety door 1 is a safety protection measure for the conventional use of the socket, so its structure will not be described in detail here; the ground wire clamping body 1 is used to clamp the corresponding plug on the tripod plug 1 for circuit conduction; the spring pin is electrically connected to the ground wire hardware through a resistor, so that the charging gun plug can receive the resistance signal for discharge or the charging gun can identify the 10A current by identifying the resistance signal, and after switching the output current to 10A, it can be plugged into an ordinary socket for charging and use through a conversion plug, thereby improving safety in use.

[0010] Preferably, three sockets are provided on the external plug-in area of the conversion plug, and one end of the ground wire hardware is integrally formed with a ground wire clamping body 2, and the ground wire clamping body 2 is limited to the corresponding hole positions of the three sockets. The other end of the ground wire hardware is bent and sunk toward the three sockets and is fixedly connected to the ground wire clamping body 1. The ground wire clamping body 1 and the ground wire clamping body 2 are respectively located on the opposite sides of the ground wire hardware. The live wire hardware and the neutral wire hardware are respectively fixed in the conversion plug, and the live wire hardware and the neutral wire hardware are arranged in an X shape. The ground wire hardware, the live wire hardware and the neutral wire hardware are distributed in order from the door frame 1 toward the external plug-in area according to the level, and the live wire hardware A live wire clamping body is integrally formed at both ends of the neutral wire hardware, and the two live wire clamping bodies are respectively located on opposite sides of the live wire hardware. One of the live wire clamping bodies is limited to the corresponding hole position of the three-socket hole, and the other live wire clamping body is bent and sunk through the end of the live wire hardware toward the three-socket hole to correspond to the live wire hole position on the tripod hole. A neutral wire clamping body is integrally formed at both ends of the neutral wire hardware, and the two neutral wire clamping bodies are respectively located on opposite sides of the neutral wire hardware. One of the neutral wire clamping bodies is limited to the corresponding hole position of the three-socket hole, and the other neutral wire clamping body is bent and sunk through the end of the neutral wire hardware toward the three-socket hole to correspond to the neutral wire hole position on the tripod hole. The ground wire clamping body 2, one of the live wire clamping bodies and one of the neutral wire clamping bodies are all used to clamp the corresponding plugs on the external plug, and the ground wire clamping body 1, the other live wire clamping body and the other neutral wire clamping body are all used to clamp the corresponding plugs on the three-pin plug 1 on the charging gun plug, so that the charging gun plug can be discharged to the outside through the conversion plug after matching with the slot; the ground wire clamping body 1, the ground wire clamping body 2, the live wire clamping body and the neutral wire clamping body are all conventional structures that are plugged into the corresponding plugs on the hardware inside the socket, so their structures will not be described in detail here. No more details are needed; the ends of the ground wire hardware, the ends of the live wire hardware and the ends of the neutral wire hardware are all bent and sunken towards the three-socket direction, which is conducive to shortening the height of the conversion plug. At the same time, combined with the layout design of the ground wire hardware, the live wire hardware and the neutral wire hardware, the three-pin jack in the slot and the conversion plug are in the form of one positive and one negative relative to the three jacks on the external plug-in area, which is conducive to reducing the volume; the two ends of the ground wire hardware, the two ends of the live wire hardware and the two ends of the neutral wire hardware form corresponding clamping bodies in a positive and negative manner, which is conducive to saving the investment cost of materials and molds.

[0011] Preferably, the conversion plug is detachably connected to a second door frame, wherein the first door frame is located on one side of the conversion plug, and the second door frame is located on the other side corresponding to the conversion plug. The ground wire hardware, the live wire hardware, and the neutral wire hardware are all located between the first door frame and the second door frame. The second door frame is provided with a plug-in hole corresponding to the three sockets, and the second door frame is provided with a second safety door that covers the live wire hole and the neutral wire hole on the plug-in hole, respectively. The second safety door is elastically slidably connected to the second door frame along the left and right directions. In the initial state, the second safety door completely covers the live wire hole and the neutral wire hole on the plug-in hole under the action of elasticity, which helps prevent other foreign objects from being inserted, thereby improving the safety of use. When an external plug is inserted to draw power, the plug on the external plug gradually pushes the second safety door to the left or right to facilitate insertion into the plug-in hole. The use of the second door frame and the second safety door is a safety protection measure for the conventional use of the socket, so its structure will not be described in detail here.

[0012] Preferably, a push plate is detachably connected to the conversion plug, and the push plate is located on the side of door frame two. A driving block is fixed on the push plate, and the driving block is located in ground wire clamping body one. After the push plate triggers the driving block through tripod plug one, it is elastically slidably connected to the conversion plug along the front and back directions. A lock is fixed on the push plate, and the lock passes through door frame two and abuts against the side of safety door two, and locks safety door two in door frame two. The part of the lock that passes through door frame two is connected to door frame two in a front and back sliding manner. In the initial state, when the charging gun plug is not inserted into the three-pin socket in the slot, one side of the safety door two is abutted by the lock catch, so that the other side corresponding to it is close to the inner wall of the door frame two, so that it cannot move left and right and is locked. The purpose is to avoid the ordinary plug being inserted into the three-pin socket for power supply and achieve the purpose of safe use; when the charging gun plug is inserted into the three-pin socket in the slot, the corresponding plug on the three-pin plug one triggers the drive block, driving the push plate to push outward in the front and rear directions, so that it drives the lock catch to separate from the safety door two and release the lock of the safety door two, thereby facilitating the normal use of the three-pin socket; from the above structural description, it can be seen that the sliding direction of the push plate is perpendicular to the sliding direction of the safety door two, which is conducive to the push plate being able to lock or release the safety door two. The structure is simple and easy to operate, which is conducive to cost saving.

[0013] Preferably, one side of the drive block is close to the external plug-in area, and the other side of the drive block is away from the external plug-in area. The side of the drive block away from the external plug-in area is a downwardly inclined drive surface. The push plate acts on the drive surface during the gradual insertion of the three-pin plug piece 1 to push the push plate to slide in a direction away from the safety door 2, thereby forcing the lock catch to separate from the safety door 2. When the charging gun plug is inserted into the three-pin socket in the slot, the corresponding plug piece on the three-pin plug piece 1 acts on the downwardly inclined drive surface. As the three-pin plug piece 1 is continuously inserted downward, the drive surface produces relative displacement and gradually drives the push plate to push outward in the front-to-back direction, causing it to drive the lock catch to separate from the safety door 2 and release the lock on the safety door 2, thereby facilitating the normal use of the three-pin socket. The driving method is simple and easy to operate.

[0014] Preferably, a rectangular slide matching the lock buckle extends outward from the edge of the door frame 2, one end of the rectangular slide is close to the safety door 2, and the other end of the rectangular slide is away from the safety door 2. A spring (not shown in the figure) is provided in the rectangular slide, one end of the spring is detachably connected to the end of the rectangular slide away from the safety door, the other end of the spring is detachably connected to one end of the lock buckle, the other end of the lock buckle is in contact with the side of the safety door 2, and the lock buckle is elastically slidably connected to the rectangular slide along the front-to-back direction. In the initial state, when the charging gun plug is not inserted into the three-pin socket in the slot, under the action of the spring, the lock buckle abuts against one side of the safety door two, so that the corresponding other side is close to the inner wall of the door frame two, so that the safety door two cannot move left and right and is locked. The purpose is to avoid the ordinary plug being inserted into the three-pin socket for power supply and achieve the purpose of safe use; when the charging gun plug is inserted into the three-pin socket in the slot, the corresponding plug on the three-pin plug one acts on the downward inclined driving surface. As the three-pin plug one is continuously inserted downward, the driving surface produces relative displacement and gradually drives the push plate and overcomes the force of the spring and pushes outward in the front and rear directions, so that it drives the lock buckle to separate from the safety door two and releases the lock of the safety door two, thereby facilitating the normal use of the three-pin socket. The driving method is simple and easy to operate.

[0015] Preferably, a limiting post is vertically provided on the edge of the door frame 2, one end of the limiting post is fixedly connected to the door frame 2, the edge of the door frame 1 is provided with a through hole that matches the other end of the limiting post, one side of the push plate is close to the door frame 2, and the other side of the push plate corresponding to the push plate is away from the door frame 2, and the side of the push plate close to the door frame 2 is provided with a limiting groove that matches the side wall of the limiting post. In the initial state, when the charging gun plug is not inserted into the three-pin jack in the slot, the lock buckle abuts against one side of the safety door 2 under the action of the spring, so that the other side corresponding to the safety door 2 is close to the inner wall of the door frame 2, thereby preventing the safety door 2 from moving left and right and being locked. At the same time, the push plate abuts against the limiting post through the limiting groove, further improving the limiting effect of the push plate in the front, back, left and right directions, thereby helping to improve the position stability of the push plate.

[0016] Preferably, the external plug-in area of the conversion plug is further provided with several groups of socket strip holes, and the several groups of socket strip holes and the three sockets are evenly distributed along the length direction of the conversion plug to form a discharge socket strip, which is convenient for meeting the power supply needs of more equipment. The conversion plug is detachably connected with several door frames three and safety doors three corresponding to the several groups of socket strip holes respectively. The safety door three is elastically slidably connected to the door frame three along the left and right directions. A rectangular slide is provided on the door frame three. The rectangular slide on the door frame three has the same structure as the rectangular slide on the door frame two. The push plate is also fixed with several locks that match the rectangular slides on the several door frames three one by one, and the locks are elastically slidably connected to the rectangular slide along the front and back directions. In the initial state, when the charging gun plug is not inserted into the three-pin socket in the slot, under the action of the spring, several locks are respectively abutted against one side of safety door two and one side of safety door three, so that the corresponding other side is close to the inner wall of door frame two and door frame three, so that safety door two and safety door three cannot move left and right and are locked. The purpose is to prevent ordinary plugs from being inserted into any hole position of the discharge socket for power-on use, so as to achieve the purpose of safe use; the coordinated use of door frame three and safety door three is a safety protection measure for conventional use of sockets, so its structure will not be described in detail here. At the same time, the socket hole can be set to three-plug or five-plug according to actual needs. The only difference is that the required number of safety doors is different, but it does not affect the structural versatility of the push plate of the present invention for locking different numbers of safety doors.

[0017] Preferably, one end of the connecting piece is located on one side of door frame one and is fixedly connected to the ground wire hardware. The other end of the connecting piece passes through door frame one and is located on the other side of door frame one. There are two spring pins, which are respectively located in two protruding columns and on the left and right sides of ground wire clamping body one. There are two resistors, and one end of the connecting piece that passes through door frame one is electrically connected to the two spring pins through two resistors. The ground wire hardware is electrically connected to the two resistors through the connecting piece, one of which transmits a signal to the corresponding probe through the corresponding spring pin to identify the discharge signal, so that the charging gun plug can discharge after receiving the signal. Since some sockets have two sockets and no ground signal, it is necessary to toggle a toggle switch to generate an analog ground signal through the circuit board. The other resistor then transmits a signal to the corresponding probe through the corresponding spring pin to identify the analog ground signal, so that the charging gun can charge, further improving the convenience of use. For sockets with grounding, there is no need to toggle the toggle switch.

[0018] As another preferred embodiment, a second three-pin plug is fixed to the external plug-in area of the conversion plug, and the conversion plug is further provided with live wire hardware and neutral wire hardware, respectively. The live wire hardware, neutral wire hardware, and ground wire hardware are all located on the same side of the door frame. One end of the live wire hardware is fixedly connected to the corresponding plug on the second three-pin plug, and the other end of the live wire hardware corresponds to the live wire hole position on the tripod hole. One end of the neutral wire hardware is fixedly connected to the corresponding plug on the second three-pin plug, and the other end of the neutral wire hardware corresponds to the neutral wire hole position on the tripod hole. As can be seen from the above structure, when the conversion plug is in the form of a three-pin plug, it is convenient for charging and use of new energy vehicles.

[0019] Preferably, the connecting piece is inserted into the inner wall of the ground wire hole on the tripod hole, and one end of the connecting piece is tilted downward from the ground wire hole on the tripod hole toward the open end of the ground wire clamping body one. One end of the connecting piece is located on one side of the door frame one and on the side of the ground wire clamping body one, and the other end of the connecting piece is located on the other side corresponding to the door frame one. There is one spring needle, and the spring needle is located in one of the bosses and on the side of the ground wire clamping body one. There is one resistor, and the end of the connecting piece located on the other side corresponding to the door frame one is electrically connected to the spring needle through the resistor. When the three-pin plug 1 on the charging gun plug is gradually inserted into the three-pin hole through the three-pin socket, the corresponding plug of the three-pin plug 1 acts on the inclined end of the connecting piece and pushes it downward until the three-pin plug 1 is completely inserted into the three-pin hole. At this time, the connecting piece is in close contact with the corresponding plug on the three-pin plug 1, thereby realizing the electrical connection between the connecting piece and the ground wire hardware; when the conversion plug is in the form of a three-pin plug, because it has grounding, only one spring pin and the corresponding probe are required for signal transmission, so that the charging gun can recognize 10A current, and after switching the output current to 10A, it can be plugged into an ordinary socket through the conversion plug for charging, thereby improving the safety of use. There is no need to set an additional spring pin for identifying the grounding analog signal, and there is no need to toggle the toggle switch.

[0020] The beneficial effects of the present invention are: 1. The present invention can realize current switching or discharge use only through a conversion plug, thereby achieving the purpose of improving the convenience of use; 2. The protrusions in the slots prevent other common plugs from being inserted, thus improving safety. Furthermore, spring pins are provided in the protrusions to transmit signals with corresponding probes, allowing the charging gun plug to receive the corresponding signal for discharge or to recognize 10A current and switch the output current to 10A before plugging it into a common socket for charging, thus improving safety. 3. After the charging gun plug is inserted into the slot of the adapter, it is locked by the lock cover to prevent the charging gun plug from falling off. At the same time, the waterproof ring can seal the gap between the charging gun plug and the slot, which is conducive to ensuring the waterproof effect when the charging gun plug and the adapter are matched; 4. When some sockets do not have a ground signal, the charging gun cannot charge the car. Therefore, a toggle switch is provided in the present invention. The user can toggle the toggle switch to generate a simulated ground signal through the circuit board. Some sockets without a ground signal recognize the signal, so that the charging gun can charge the car, further improving the convenience of use. 5. The cover isolates the circuit board and the toggle switch, which helps prevent plastic from entering during injection molding and affecting the normal use of the circuit board and the toggle switch; 6. The ends of the ground wire hardware, the live wire hardware, and the neutral wire hardware are all bent and sunken toward the three-pin socket, which helps shorten the height of the conversion plug. At the same time, combined with the layout design of the ground wire hardware, the live wire hardware, and the neutral wire hardware, the three-pin socket in the slot and the three-pin socket on the external plug-in area of the conversion plug are arranged in a positive and negative manner, which helps to reduce the volume. The two ends of the ground wire hardware, the two ends of the live wire hardware, and the two ends of the neutral wire hardware respectively form corresponding clamping bodies in a positive and negative manner, which helps to save material and mold investment costs. 7. When the charging gun plug is not inserted into the three-pin socket in the slot, under the action of the spring, several locks are respectively abutted against one side of safety door 2 and one side of safety door 3, so that the corresponding other side is close to the inner wall of door frame 2 and door frame 3, so that safety door 2 and safety door 3 cannot move left and right and are locked. The purpose is to prevent ordinary plugs from being inserted into any hole of the discharge socket strip for power supply and achieve the purpose of safe use. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of the structure of the present invention Figure 1 ; Figure 2 This is a schematic diagram of the structure of the present invention Figure 2 ; Figure 3 This is a structural diagram of the charging gun plug; Figure 4 This is the front view of the charging gun plug; Figure 5 yes Figure 4 Cross-sectional view of AA; Figure 6 and Figure 7 They are Figure 1 Schematic diagram of the internal structure of the conversion plug on both sides; Figure 8 and Figure 12 They are Figure 1 The conversion in the tool inserts two exploded views from different perspectives; Figure 9 yes Figure 8 Structural diagram of one section of the middle door frame; Figure 10 yes Figure 8 Structural diagram of the second middle door frame; Figure 11 yes Figure 8 Schematic diagram of the structure of the middle push plate; Figure 13 and Figure 14 They are Figure 1 The conversion plug-in shows the exploded view of the interior from two different perspectives; Figure 15 yes Figure 2 Exploded view of the intermediate converter; Figure 16 yes Figure 15 Structural diagram of a middle door frame.

[0022] Figure: 1. Charging gun plug, 2. Three-pin insert (1), 3. Cylindrical slot, 4. Probe, 5. Adapter, 6. Slot, 7. Three-pin jack, 8. Boss, 9. Spring pin, 10. External plug area, 11. Resistor, 12. Ground wire hardware, 13. Waterproof ring, 14. Lock cover, 15. L-shaped lock slot, 16. Lock block, 17. Step surface, 18. Bracket, 19. Toggle switch, 20. Cover, 21. Encapsulated body, 22. Circuit board, 23. Door frame (1), 24. Three-pin hole, 25. Ground wire holder (1), 26. Connector, 27. Safety door (1), 28. Three-pin jack, 29. Ground wire holder (2), 30. Hot wire hardware, 31. Neutral wire hardware, 32. Hot wire holder, 33. Neutral wire clamping body, 34. Door frame 2, 35. Plug hole, 36. Safety door 2, 37. Push plate, 38. Drive block, 39. Lock, 40. Drive surface, 41. Rectangular slide, 42. Limit column, 43. Through hole, 44. Limit slot, 45. Socket hole, 46. Door frame 3, 47. Safety door 3, 48. Three-pin plug 2. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is in no way intended to limit the present application and its application or use. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0024] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, they indicate the presence of features, steps, operations, devices, components and / or combinations thereof.

[0025] Unless otherwise specified, the relative arrangement of components, numerical expressions, and values described in these embodiments do not limit the scope of this application. For ease of description, spatially relative terms such as "upper," "lower," "left," and "right" are used in the embodiments to illustrate the relationship of one element or feature shown in the figures relative to another. It should be understood that, in addition to the orientations shown in the figures, spatial terms are intended to encompass different orientations of the device during use or operation. For example, if the device in the figure is inverted, an element described as being "below" another element or feature would be fixed "above" the other element or feature. Therefore, the exemplary term "below" can include both upper and lower orientations. The device can be fixed in other ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used herein should be interpreted accordingly. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to scale. Technologies, processes, and equipment known to those skilled in the relevant art may not be discussed in detail, but, where appropriate, should be considered part of the specification. In all examples shown and discussed herein, any specific values should be interpreted as merely exemplary and not limiting. Therefore, other examples of the exemplary embodiments may have different values.It should be noted that like reference numerals and letters represent similar items in the following figures, and therefore, once an item is defined in one figure, it need not be further discussed in subsequent figures.

[0026] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of this application.

[0027] like Figure 1 、 Figure 2 、 Figure 3 、 Figure 6 and Figure 15In the embodiment described, a special safety plug and socket for charging and discharging of new energy vehicles includes a charging gun plug 1, which is respectively provided with a three-pin plug piece 2 and two cylindrical slots 3, and a probe 4 is fixed in the cylindrical slot 3; a conversion plug 5, one side of the conversion plug 5 is provided with a slot 6 matching the charging gun plug 1, the charging gun plug 1 is plugged and unplugged into the slot 6, and the slot 6 is respectively provided with a three-pin socket 7 matching the three-pin plug piece 2 and two protrusions 8 respectively plugged and unplugged into the two cylindrical slots 3, a spring pin 9 is fixed in the protrusion 8, and the other side corresponding to the conversion plug 5 is an external plug-in area 10, a resistor 11 and a ground wire hardware 12 are fixed in the conversion plug 5, and the two ends of the ground wire hardware 12 correspond one to one with the ground wire hole position on the three-pin socket 7 and the external plug-in area 10 respectively, one end of the spring pin 9 is in contact with the corresponding probe 4, and the other end of the spring pin 9 is electrically connected to the ground wire hardware 12 through the resistor 11.

[0028] like Figure 1 and Figure 2 As shown, a waterproof ring 13 and a locking cover 14 are provided on the outside of the charging gun plug 1. The waterproof ring 13 is fixedly connected to the outer side wall of the charging gun plug 1. The locking cover 14 is sleeved on the outside of the charging gun plug 1 and is rotatably connected to the charging gun plug 1. After one end of the charging gun plug 1 is inserted into the slot 6, it is locked by matching the locking cover 14 with the outer side wall of the slot 6. The waterproof ring 13 is sealed with the open end of the slot 6 under the pressing action of the locking cover 14. The other end of the charging gun plug 1 is fixed with a cable electrically connected to the triangular plug 1 and the probe 4 respectively.

[0029] like Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 and Figure 5 As shown, the outer wall of the slot 6 is provided with two or more L-shaped lock grooves 15 evenly distributed along the circumference of the slot 6, and the L-shaped lock groove 15 is located at the open end of the slot 6. The inner wall of the lock cover 14 is provided with two or more lock blocks 16 that match the L-shaped lock grooves 15 one by one. A step surface 17 corresponding to the waterproof ring 13 is provided in the lock cover 14. After one end of the charging gun plug 1 is inserted into the slot 6, the lock cover 14 is inserted into one end of the corresponding L-shaped lock groove 15 through the lock block 16, and then the lock cover 14 is rotated to drive the lock block 16 to rotate synchronously and squeeze into the other end of the L-shaped lock groove 15 to be locked. The waterproof ring 13 seals the open end of the slot 6 under the pressure of the step surface 17.

[0030] like Figure 3 、 Figure 4 and Figure 5As shown, the charging gun plug 1 includes a bracket plate 18, a three-pin plug-in piece 2 is fixedly connected to the bracket plate 18 and is located on one side of the bracket plate 18, a toggle switch 19 is also provided on one side of the bracket plate 18, and a cover 20 and an encapsulated body 21 are respectively provided on the other side of the bracket plate 18. The cover 20 is located on the side of the three-pin plug-in piece 2, the cover 20 is fixedly connected to the bracket plate 18 and forms an isolation cavity, a circuit board 22 is provided in the isolation cavity, the toggle switch 19 is electrically connected to the cable through the circuit board 22, the toggle switch 19 is located in the isolation cavity, the cover 20 is located in the encapsulated body 21, and the bracket plate 18 is fixedly connected to the cable after being encapsulated by the encapsulated body 21 and forms a whole, which is beneficial to improving the waterproof and dustproof effect inside the charging gun plug 1, as well as the strength of the charging gun plug 1, and is convenient for repeated plugging and unplugging. The waterproof ring 13 is located on the encapsulated body 21 and forms an integral body with the encapsulated body 21, which is beneficial to ensuring the waterproof effect.

[0031] like Figure 6 、 Figure 8 、 Figure 9 、 Figure 10 and Figure 16 As shown, a door frame 23 is detachably connected to the conversion socket 5, and a tripod hole 24 corresponding to the tripod socket 7 is provided on the door frame 23. The ground wire hardware 12 is located on one side of the door frame 23, and one end of the ground wire hardware 12 is located in the external plug-in area 10. The other end of the ground wire hardware 12 is integrally formed with a ground wire clamping body 25 corresponding to the ground wire hole position on the tripod hole 24. The spring pin 9 and the resistor 11 are both located on the other side corresponding to the door frame 23. One end of the spring pin 9 is located in the boss 8, and the other end of the spring pin 9 is fixedly connected to the door frame 23. One end of the resistor 11 is fixedly connected to the spring pin 9. The other end of the resistor 11 is fixed with a connecting piece 26 electrically connected to the ground wire hardware 12. A safety door 27 covering the live wire hole position and the neutral wire hole position on the tripod hole 24 respectively is provided on the other side corresponding to the door frame 23. The safety door 27 is elastically slidably connected to the door frame 23 under the drive of the tripod plug 2.

[0032] like Figure 8 、 Figure 10 、 Figure 12 、 Figure 13 and Figure 14As shown, three sockets 28 are provided on the external plug-in area 10 of the conversion plug 5, and one end of the ground wire hardware 12 is integrally formed with a ground wire clamping body 29, which is limited to the corresponding hole positions of the three sockets 28. The other end of the ground wire hardware 12 is bent and sunk toward the three sockets 28 and fixedly connected with the ground wire clamping body 1 25. The ground wire clamping body 1 25 and the ground wire clamping body 2 29 are respectively located on the opposite sides of the ground wire hardware 12. The live wire hardware 30 and the neutral wire hardware 31 are respectively fixed in the conversion plug 5. The live wire hardware 30 and the neutral wire hardware 31 are arranged in an X shape. The ground wire hardware 12, the live wire hardware 30 and the neutral wire hardware 31 are distributed in sequence from the door frame 1 23 toward the external plug-in area 10 in a hierarchical manner. The two ends of the live wire hardware 30 are respectively A live wire clamping body 32 is integrally formed, and the two live wire clamping bodies 32 are respectively located on opposite sides of the live wire hardware 30, one of the live wire clamping bodies 32 is limited to the corresponding hole position of the three-socket hole 28, and the other live wire clamping body 32 is bent and sunk through the end of the live wire hardware 30 toward the three-socket hole 28 to correspond to the live wire hole position on the tripod hole 24. Neutral wire clamping bodies 33 are respectively integrally formed at both ends of the neutral wire hardware 31, and the two neutral wire clamping bodies 33 are respectively located on opposite sides of the neutral wire hardware 31, one of the neutral wire clamping bodies 33 is limited to the corresponding hole position of the three-socket hole 28, and the other neutral wire clamping body 33 is bent and sunk through the end of the neutral wire hardware 31 toward the three-socket hole 28 to correspond to the neutral wire hole position on the tripod hole 24.

[0033] A door frame 2 34 is detachably connected to the conversion plug 5. The door frame 1 23 is located on one side of the conversion plug 5, and the door frame 2 34 is located on the other side corresponding to the conversion plug 5. The ground wire hardware 12, the live wire hardware 30 and the neutral wire hardware 31 are all located between the door frame 1 23 and the door frame 2 34. The door frame 2 34 is provided with a plug-in hole 35 corresponding to the three sockets 28. The door frame 2 34 is provided with a safety door 2 36 that respectively covers the live wire hole position and the neutral wire hole position on the plug-in hole 35. The safety door 2 36 is elastically slidably connected to the door frame 2 34 along the left and right directions.

[0034] like Figure 7 、 Figure 8 、 Figure 11 、 Figure 12 、 Figure 13 and Figure 14 As shown, a push plate 37 is detachably connected to the conversion plug 5, and the push plate 37 is located on the side of the door frame 2 34. A driving block 38 is fixed on the push plate 37, and the driving block 38 is located in the ground wire clamping body 1 25. The push plate 37 triggers the driving block 38 through the tripod plug 1 2 and is elastically slidably connected to the conversion plug 5 along the front and rear directions. A lock buckle 39 is fixed on the push plate 37, and the lock buckle 39 passes through the door frame 2 34 and abuts against the side of the safety door 2 36, so that the safety door 2 36 is locked in the door frame 2 34. The part of the lock buckle 39 that passes through the door frame 2 34 is connected to the door frame 2 34 in a front and rear sliding manner.

[0035] One side of the driving block 38 is close to the external plug-in area 10, and the other side of the driving block 38 is away from the external plug-in area 10. The side of the driving block 38 away from the external plug-in area 10 is a downwardly inclined driving surface 40. During the gradual insertion of the tripod plug 1 2, the push plate 37 acts on the driving surface 40 to push the push plate 37 to slide in the direction away from the safety door 2 36, thereby forcing the lock 39 to separate from the safety door 2 36.

[0036] A rectangular slide 41 matching the lock catch 39 extends outward from the edge of the door frame 34. One end of the rectangular slide 41 is close to the safety door 36, and the other end of the rectangular slide 41 is away from the safety door 36. A spring is provided in the rectangular slide 41. One end of the spring is detachably connected to the end of the rectangular slide 41 away from the safety door, and the other end of the spring is detachably connected to one end of the lock catch 39. The other end of the lock catch 39 is in contact with the side of the safety door 36, and the lock catch 39 is elastically slidably connected to the rectangular slide 41 along the front-to-back direction.

[0037] like Figure 6 、 Figure 9 、 Figure 10 、 Figure 11 and Figure 14 As shown, a limiting column 42 is vertically provided on the edge of the door frame 2 34, one end of the limiting column 42 is fixedly connected to the door frame 2 34, and a through hole 43 is provided on the edge of the door frame 1 23 to match the other end of the limiting column 42, one side of the push plate 37 is close to the door frame 2 34, and the other side of the push plate 37 is away from the door frame 2 34, and the side of the push plate 37 close to the door frame 2 34 is provided with a limiting groove 44 to match the side wall of the limiting column 42.

[0038] like Figure 7 、 Figure 8 、 Figure 12 、 Figure 13 and Figure 14 As shown, the external plug-in area 10 of the conversion socket 5 is also provided with several groups of socket strip holes 45. After the several groups of socket strip holes 45 and the three sockets 28 are evenly distributed along the length direction of the conversion socket 5, they together form a discharge socket strip, which is convenient for meeting the power supply needs of more equipment. The conversion socket 5 is detachably connected with several door frames 3 46 and safety doors 3 47 corresponding to the several groups of socket strip holes 45. The safety door 3 47 is elastically slidably connected to the door frame 3 46 along the left and right directions. A rectangular slide 41 is provided on the door frame 3 46. The rectangular slide 41 on the door frame 3 46 has the same structure as the rectangular slide 41 on the door frame 2 34. The push plate 37 is also fixed with several locks 39 that match the rectangular slides 41 on the several door frames 3 46 one by one. The locks 39 are elastically slidably connected to the rectangular slide 41 along the front and back directions.

[0039] like Figure 9 and Figure 13As shown, one end of the connecting piece 26 is located on one side of the door frame 23 and is fixedly connected to the ground wire hardware 12. The other end of the connecting piece 26 passes through the door frame 23 and is located on the other side corresponding to the door frame 23. There are two spring needles 9, and the two spring needles 9 are respectively located in the two protrusions 8 and are respectively located on the left and right sides of the ground wire clamping body 25. There are two resistors 11. One end of the connecting piece 26 passes through the door frame 23 and is electrically connected to the two spring needles 9 through the two resistors 11.

[0040] like Figure 2 、 Figure 15 and Figure 16 As shown, a three-pin plug piece 2 48 is fixed to the external plug-in area 10 of the conversion plug 5, and a live wire hardware 30 and a neutral wire hardware 31 are respectively provided in the conversion plug 5. The live wire hardware 30, the neutral wire hardware 31 and the ground wire hardware 12 are all located on the same side of the door frame 1 23. One end of the live wire hardware 30 is fixedly connected to the corresponding plug piece on the three-pin plug piece 2 48, and the other end of the live wire hardware 30 corresponds to the live wire hole position on the tripod hole 24. One end of the neutral wire hardware 31 is fixedly connected to the corresponding plug piece on the three-pin plug piece 2 48, and the other end of the neutral wire hardware 31 corresponds to the neutral wire hole position on the tripod hole 24.

[0041] The connecting piece 26 is inserted into the inner wall of the ground wire hole on the tripod hole 24. One end of the connecting piece 26 is tilted downward from the ground wire hole on the tripod hole 24 toward the open end of the ground wire clamping body 25. One end of the connecting piece 26 is located on one side of the door frame 23 and on the side of the ground wire clamping body 25. The other end of the connecting piece 26 is located on the other side corresponding to the door frame 23. There is one spring needle 9, which is located in one of the protrusions 8 and on the side of the ground wire clamping body 25. There is one resistor 11. The end of the connecting piece 26 located on the other side corresponding to the door frame 23 is electrically connected to the spring needle 9 through the resistor 11.

[0042] In the first embodiment, after the charging gun plug 1 is inserted into the slot 6 of the conversion plug 5, the user pushes the lock cover 14 downward until the lock block 16 on the lock cover 14 is inserted into one end of the L-shaped lock groove 15 and cannot be pushed further down. The lock cover 14 is then rotated, causing the lock block 16 to rotate synchronously into the other end of the L-shaped lock groove 15. During the rotation process, the lock block 16 is first squeezed by the side wall of the L-shaped lock groove 15 before entering the other end of the L-shaped lock groove 15, so that the lock block 16 is limited in position without external force. The structure is simple and easy to operate. At the same time, the waterproof ring 13 can seal the gap between the charging gun plug 1 and the slot 6, which is conducive to ensuring the waterproof effect when the charging gun plug 1 is matched with the conversion plug 5. This structure is a commonly used locking structure, so it will not be described in detail here.

[0043] Example 2, as Figure 1 、 Figures 6 to 14As shown, the structure of the conversion plug 5 is convenient for discharging in new energy vehicles. In the initial state, the safety door 2 36 completely covers the live wire hole and the neutral wire hole on the plug hole 35 under the action of elasticity, which is conducive to preventing other foreign objects from being inserted, thereby improving the safety of use; when the charging gun plug 1 is not inserted into the three-pin socket 7 in the slot 6, under the action of the spring (not shown in the figure), the lock 39 abuts against one side of the safety door 2 36, so that the other side of the corresponding door 36 is close to the inner wall of the door frame 2 34, so that the safety door 2 36 cannot move left and right and is locked, in order to avoid the ordinary plug Inserting the charging gun plug 1 into the three-pin socket 7 in the slot 6, the corresponding insert on the three-pin insert 1 2 acts on the downward-inclined driving surface 40. As the three-pin insert 1 2 is continuously inserted downward, the driving surface 40 produces relative displacement, gradually driving the push plate 37 and overcoming the force of the spring to push outward in the front-to-back direction, so that it drives the lock catch 39 to separate from the safety door 2 36, releasing the lock of the safety door 2 36, thereby facilitating the normal use of the three-pin socket 28. When an external plug is inserted into the three-pin socket 28 to draw power, the insert on the external plug gradually pushes the safety door 2 36 to the left or right to facilitate insertion into the plug hole 35. The use of the door frame 2 34 and the safety door 2 36 is a safety protection measure for the conventional use of the socket, so its structure will not be described in detail here.

[0044] Embodiment 3 is different from Embodiment 2 in that a plurality of groups of socket holes 45 are further provided on the external plug-in area 10 of the conversion socket 5, so that they form a discharge socket together with the three sockets 28; therefore, when the charging gun plug 1 is not inserted into the three-pin socket 7 in the slot 6, under the action of the spring, a plurality of lock buckles 39 respectively abut against one side of the safety door 2 36 and one side of the safety door 3 47, so that the corresponding other side is close to the inner wall of the door frame 2 34 and the door frame 3 46, so that the safety door 2 36 and the safety door 3 47 cannot move left and right and are locked; the coordinated use of the door frame 3 46 and the safety door 3 47 is a safety protection measure for conventional use of the socket, so its structure will not be described in detail here. At the same time, the socket hole 45 can be set in the form of three plugs or five plugs according to actual needs. The only difference is that the required number of safety doors is different, but it does not affect the structural versatility of the push plate 37 of the present invention for locking different numbers of safety doors.

[0045] Embodiment 4. In Embodiment 2 and Embodiment 3, the ground wire hardware 12 is electrically connected to the two resistors 11 respectively through the connecting piece 26, and one of the resistors 11 then transmits a signal to the corresponding probe 4 through the corresponding spring pin 9 to identify the discharge signal, so that the charging gun plug 1 can perform the discharge work after receiving the signal; since the five-pin socket 45 contains two sockets and there is no ground signal, it is necessary to toggle the toggle switch 19 on the charging gun plug 1 to generate an analog ground signal through the circuit board 22, and the other resistor 11 then transmits a signal to the corresponding probe 4 through the corresponding spring pin 9 to identify the analog ground signal, so that the charging gun can perform charging work, further improving the convenience of use; for sockets with grounding, there is no need to toggle the toggle switch 19.

[0046] Example 5. In Example 2 and Example 3, the ground wire clamping body 29, one of the live wire clamping bodies 32 and one of the neutral wire clamping bodies 33 are all used to clamp the corresponding plugs on the external plug, and the ground wire clamping body 1 25, another live wire clamping body 32 and another neutral wire clamping body 33 are all used to clamp the corresponding plugs on the three-pin plug 1 2 on the charging gun plug 1, so that the charging gun plug 1 is matched with the slot 6 and discharged to the outside through the conversion plug 5; the ground wire clamping body 1 25, the ground wire clamping body 29, the live wire clamping body 32 and the neutral wire clamping body 33 are all conventional structures that are plugged into the corresponding plugs on the hardware inside the socket, so they are not described here. The structure will not be described in detail; the ends of the ground wire hardware 12, the ends of the live wire hardware 30 and the ends of the neutral wire hardware 31 are all bent and sunken toward the three sockets 28, which is conducive to shortening the height of the conversion plug 5. At the same time, combined with the layout design of the ground wire hardware 12, the live wire hardware 30 and the neutral wire hardware 31, the three-pin socket 7 in the slot 6 and the conversion plug 5 are in the form of one positive and one negative relative to the three sockets 28 on the external plug-in area 10, which is conducive to reducing the volume; the two ends of the ground wire hardware 12, the two ends of the live wire hardware 30 and the two ends of the neutral wire hardware 31 respectively form corresponding clamping bodies in a positive and negative manner, which is conducive to saving the investment cost of materials and molds.

[0047] Example 6: Figure 2 、 Figure 15 and Figure 16As shown, when the conversion plug 5 is in the form of a three-pin plug, it is convenient for charging new energy vehicles. The default rated current of the charging gun plug 1 is basically 16A. When it needs to be used with a 10A external socket for charging, the three-pin plug 1 on the charging gun plug 1 is gradually inserted into the three-pin hole 24 through the three-pin socket 7. The corresponding prong of the three-pin plug 1 acts on the inclined end of the connecting piece 26 and pushes it downward until the three-pin plug 1 is fully inserted into the three-pin hole 24. At this time, the connecting piece 26 and the corresponding prong on the three-pin plug 1 are in close contact, thereby achieving an electrical connection between the connecting piece 26 and the ground hardware 12. Because the conversion plug 5 is a three-pin plug with a ground connection, only one spring pin 9 and the corresponding probe 4 are required for signal transmission, so that the charging gun can recognize the 10A current and switch the output current to 10A. After that, the conversion plug 5 is plugged into a regular socket for charging, which is beneficial to improving the safety of use. There is no need to set up an additional spring pin 9 to recognize the ground analog signal, and there is no need to toggle the toggle switch 19.

[0048] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A special safety plug and socket for charging and discharging new energy vehicles, characterized by comprising: A charging gun plug (1), wherein the charging gun plug (1) is provided with a three-pin plug piece (2) and two cylindrical slots (3), and a probe (4) is fixed in each cylindrical slot (3); A conversion plug (5) is provided on one side of the conversion plug (5) with a slot (6) matching the charging gun plug (1), the charging gun plug (1) is pluggably connected to the slot (6), the slot (6) is provided with a three-pin socket (7) matching the three-pin plug piece (2) and two bosses (8) pluggably connected to the two cylindrical slots (3) respectively, a spring pin (9) is fixed in the boss (8), the other side corresponding to the conversion plug (5) is an external plug-in area (10), a resistor (11) and a ground wire hardware (12) are fixed in the conversion plug (5), the two ends of the ground wire hardware (12) respectively correspond to the ground wire hole position on the three-pin socket (7) and the external plug-in area (10), one end of the spring pin (9) is in contact with the corresponding probe (4), and the other end of the spring pin (9) is electrically connected to the ground wire hardware (12) through the resistor (11).

2. A new energy vehicle charging and discharging safety plug and socket according to claim 1, characterized in that: The charging gun plug (1) is provided with a waterproof ring (13) and a locking cover (14) on the outside. The waterproof ring (13) is fixedly connected to the outer side wall of the charging gun plug (1). The locking cover (14) is sleeved on the outside of the charging gun plug (1) and is rotatably connected to the charging gun plug (1). After one end of the charging gun plug (1) is inserted into the slot (6), it is locked by the locking cover (14) and the outer side wall of the slot (6). The waterproof ring (13) is sealed and connected to the open end of the slot (6) under the pressing action of the locking cover (14). The other end of the charging gun plug (1) is fixed with a cable that is electrically connected to the triangular plug piece 1 and the probe (4) respectively.

3. A new energy vehicle charging and discharging safety plug and socket according to claim 2, characterized in that: The outer wall of the slot (6) is provided with two or more L-shaped locking grooves (15) uniformly distributed along the circumference of the slot (6), and the L-shaped locking grooves (15) are located at the open end of the slot (6). The inner wall of the lock cover (14) is provided with two or more locking blocks (16) that match the L-shaped locking grooves (15) one by one. The lock cover (14) is provided with a step surface (17) corresponding to the waterproof ring (13). After one end of the charging gun plug (1) is inserted into the slot (6), the lock cover (14) is inserted into one end of the corresponding L-shaped locking groove (15) through the locking block (16), and then the lock cover (14) is rotated to drive the locking block (16) to rotate synchronously and squeeze into the other end of the L-shaped locking groove (15) to be locked. The waterproof ring (13) seals the open end of the slot (6) under the pressing action of the step surface (17).

4. A new energy vehicle charging and discharging safety plug and socket according to claim 2, characterized in that: The charging gun plug (1) includes a bracket plate (18), the three-pin plug piece (2) is fixedly connected to the bracket plate (18) and is located on one side of the bracket plate (18), and a toggle switch (19) is also provided on one side of the bracket plate (18). The other side of the bracket plate (18) is provided with a cover (20) and a gelatin package (21), respectively. The cover (20) is located on the side of the three-pin plug piece (2), the cover (20) is fixedly connected to the bracket plate (18) and forms an isolation cavity, a circuit board (22) is provided in the isolation cavity, the toggle switch (19) is electrically connected to the cable through the circuit board (22), the toggle switch (19) is located in the isolation cavity, the cover (20) is located in the gelatin package (21), the bracket plate (18) is fixedly connected to the cable after being gelatinized by the gelatin package (21) and forms a whole, and the waterproof ring (13) is located on the gelatin package (21) and forms a whole with the gelatin package (21).

5. A new energy vehicle charging and discharging safety plug and socket according to claim 1, characterized in that: The conversion plug (5) is detachably connected to a door frame (23), and a tripod hole (24) corresponding to the tripod socket (7) is provided on the door frame (23). The ground wire hardware (12) is located on one side of the door frame (23), and one end of the ground wire hardware (12) is located in the external plug-in area (10). The other end of the ground wire hardware (12) is integrally formed with a ground wire clamping body (25) corresponding to the ground wire hole position on the tripod hole (24). The spring needle (9) and the resistor (11) are both located on the other side corresponding to the door frame (23). One end of the spring pin (9) is located in the boss (8), and the other end of the spring pin (9) is fixedly connected to the door frame (23). One end of the resistor (11) is fixedly connected to the spring pin (9), and the other end of the resistor (11) is fixed with a connecting piece (26) electrically connected to the ground wire hardware (12). The other side corresponding to the door frame (23) is provided with a safety door (27) covering the live wire hole position and the neutral wire hole position on the tripod hole (24) respectively. The safety door (27) is elastically slidably connected to the door frame (23) under the drive of the tripod plug (2).

6. A new energy vehicle charging and discharging safety plug and socket according to claim 5, characterized in that: The external plug-in area (10) of the conversion plug (5) is provided with three sockets (28), one end of the ground wire hardware (12) is integrally formed with a ground wire clamping body 2 (29), the ground wire clamping body 2 (29) is limited in the corresponding hole position of the three sockets (28), and the other end of the ground wire hardware (12) is bent and sunk toward the direction of the three sockets (28) and is fixedly connected to the ground wire clamping body 1 (25), the ground wire clamping body 1 (25) The first ground wire clamping body (29) is located on opposite sides of the ground wire hardware (12). The live wire hardware (30) and the neutral wire hardware (31) are fixed in the conversion plug (5). The live wire hardware (30) and the neutral wire hardware (31) are arranged in an X shape. The ground wire hardware (12), the live wire hardware (30) and the neutral wire hardware (31) are distributed in order from the door frame (23) toward the external plug-in area (10). The two ends of the wire hardware (30) are respectively integrally formed with a live wire clamping body (32), and the two live wire clamping bodies (32) are respectively located on opposite sides of the live wire hardware (30), one of the live wire clamping bodies (32) is limited to the corresponding hole position of the three-hole (28), and the other live wire clamping body (32) is bent and sunk through the end of the live wire hardware (30) toward the three-hole (28) and corresponds to the live wire hole position on the tripod hole (24). The two ends of the zero wire hardware (31) are respectively integrally formed with a zero wire clamping body (33), and the two zero wire clamping bodies (33) are respectively located on opposite sides of the zero wire hardware (31), one of the zero wire clamping bodies (33) is limited to the corresponding hole position of the three plug holes (28), and the other zero wire clamping body (33) is bent and sunk through the end of the zero wire hardware (31) toward the three plug holes (28) and corresponds to the zero wire hole position on the tripod hole (24).

7. A new energy vehicle charging and discharging safety plug and socket according to claim 6, characterized in that: The conversion plug (5) is detachably connected to a door frame 2 (34), the door frame 1 (23) is located on one side of the conversion plug (5), and the door frame 2 (34) is located on the other side corresponding to the conversion plug (5), the ground wire hardware (12), the live wire hardware (30) and the neutral wire hardware (31) are all located between the door frame 1 (23) and the door frame 2 (34), the door frame 2 (34) is provided with a plug hole (35) corresponding to the three plug holes (28), the door frame 2 (34) is provided with a safety door 2 (36) respectively covering the live wire hole position and the neutral wire hole position on the plug hole (35), and the safety door 2 (36) is elastically slidably connected to the door frame 2 (34) along the left and right directions.

8. A new energy vehicle charging and discharging safety plug and socket according to claim 7, characterized in that: The conversion plug (5) is detachably connected with a push plate (37), the push plate (37) is located on the side of the door frame 2 (34), the push plate (37) is fixed with a driving block (38), the driving block (38) is located in the ground wire clamping body 1 (25), the push plate (37) triggers the driving block (38) through the tripod plug 1 (2), and then elastically slides with the conversion plug (5) along the front-back direction, the push plate (37) is fixed with a lock (39), the lock (39) passes through the door frame 2 (34) and abuts against the side of the safety door 2 (36), so that the safety door 2 (36) is locked in the door frame 2 (34), and the part of the lock (39) that passes through the door frame 2 (34) is connected to the door frame 2 (34) in a front-back sliding manner.

9. A new energy vehicle charging and discharging safety plug and socket according to claim 8, characterized in that: One side of the driving block (38) is close to the external plug-in area (10), and the other side of the driving block (38) is away from the external plug-in area (10). The side of the driving block (38) away from the external plug-in area (10) is a downwardly inclined driving surface (40). The push plate (37) acts on the driving surface (40) during the gradual insertion of the tripod plug piece (2) to push the push plate (37) to slide in a direction away from the safety door (36), thereby forcing the lock (39) to separate from the safety door (36).

10. A new energy vehicle charging and discharging safety plug and socket according to claim 8, characterized in that: A rectangular slide (41) matching the lock catch (39) extends outward from the edge of the door frame 2 (34), one end of the rectangular slide (41) is close to the safety door 2 (36), and the other end of the rectangular slide (41) is away from the safety door 2 (36). A spring is provided in the rectangular slide (41), one end of the spring is detachably connected to the end of the rectangular slide (41) away from the safety door, and the other end of the spring is detachably connected to one end of the lock catch (39), and the other end of the lock catch (39) is fitted with the side of the safety door 2 (36). The lock catch (39) and the rectangular slide (41) are elastically slidably connected along the front-back direction.

11. A new energy vehicle charging and discharging safety plug and socket according to claim 8, 9 or 10, characterized in that: A limiting column (42) is vertically provided on the edge of the door frame 2 (34), one end of the limiting column (42) is fixedly connected to the door frame 2 (34), and a through hole (43) matching the other end of the limiting column (42) is provided on the edge of the door frame 1 (23), one side of the push plate (37) is close to the door frame 2 (34), and the other side of the push plate (37) is away from the door frame 2 (34), and a limiting groove (44) matching the side wall of the limiting column (42) is provided on the side of the push plate (37) close to the door frame 2 (34).

12. A new energy vehicle charging and discharging safety plug and socket according to claim 10, characterized in that: The external plug-in area (10) of the conversion plug (5) is also provided with a plurality of groups of socket holes (45). The plurality of groups of socket holes (45) and the three sockets (28) are evenly distributed along the length direction of the conversion plug (5) to form a discharge socket. The conversion plug (5) is detachably connected with a plurality of door frames three (46) and safety doors three (47) that correspond to the plurality of groups of socket holes (45). The safety doors three (47) are elastically slidably connected to the door frame three (46) along the left and right directions. A rectangular slide (41) is provided on the door frame three (46). The rectangular slide (41) on the door frame three (46) has the same structure as the rectangular slide (41) on the door frame two (34). The push plate (37) is also fixed with a plurality of lock buckles (39) that match the rectangular slides (41) on the plurality of door frames three (46). The lock buckles (39) are elastically slidably connected to the rectangular slide (41) along the front and back directions.

13. A new energy vehicle charging and discharging safety plug and socket according to claim 6, characterized in that: One end of the connecting piece (26) is located on one side of the door frame (23) and is fixedly connected to the ground wire hardware (12). The other end of the connecting piece (26) passes through the door frame (23) and is located on the other side corresponding to the door frame (23). There are two spring needles (9), and the two spring needles (9) are respectively located in the two bosses (8) and are respectively located on the left and right sides of the ground wire clamping body (25). There are two resistors (11). One end of the connecting piece (26) passes through the door frame (23) and is electrically connected to the two spring needles (9) through the two resistors (11).

14. A new energy vehicle charging and discharging safety plug and socket according to claim 5, characterized in that: A tripod plug piece 2 (48) is fixed on the external plug-in area (10) of the conversion plug (5), and a live wire hardware (30) and a neutral wire hardware (31) are respectively provided in the conversion plug (5). The live wire hardware (30), the neutral wire hardware (31) and the ground wire hardware (12) are all located on the same side of the door frame (23). One end of the live wire hardware (30) is fixedly connected to the corresponding plug piece on the tripod plug piece 2 (48), and the other end of the live wire hardware (30) corresponds to the live wire hole position on the tripod hole (24). One end of the neutral wire hardware (31) is fixedly connected to the corresponding plug piece on the tripod plug piece 2 (48), and the other end of the neutral wire hardware (31) corresponds to the neutral wire hole position on the tripod hole (24).

15. A new energy vehicle charging and discharging safety plug and socket according to claim 14, characterized in that: The connecting piece (26) is plugged into the inner side wall of the ground wire hole on the tripod hole (24), and one end of the connecting piece (26) is tilted downward from the ground wire hole on the tripod hole (24) toward the open end of the ground wire clamping body (25). One end of the connecting piece (26) is located on one side of the door frame (23) and on the side of the ground wire clamping body (25). The other end of the connecting piece (26) is located on the other side corresponding to the door frame (23). There is one spring needle (9), and the spring needle (9) is located in one of the protruding columns (8) and on the side of the ground wire clamping body (25). There is one resistor (11), and one end of the connecting piece (26) located on the other side corresponding to the door frame (23) is electrically connected to the spring needle (9) through the resistor (11).

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