CN113675668A - Self-disconnection opening structure, charging pile with structure and method - Google Patents

Abstract

The invention discloses a self-breaking line port structure, which relates to the technical field of charging piles and comprises a shell, wherein the shell comprises a butt joint port, a pneumatic cavity, a locking block, a movable cavity, a telescopic machine, a sliding plate, a power connection head, a power-on head and an ejection spring. Through from the connected mode that the afterbody of outage mouth structure effect will charge the rifle and be connected the design into plug-in type with charging electric pile, can realize automatic disconnected tail outage operation when the rifle that charges is promoted, avoid the electric current to leak outward and cause the potential safety hazard. Wherein, when normal use, the connector lug can be locked by the locking piece, avoids being pulled out in disorder and not hard up by child, and when the connector lug was spured, the locking piece can be pulled out or the connector lug was broken by automatic under the air pressure effect that the atmospheric pressure chamber was set for again, detects to fire through temperature sensor, and control atmospheric pressure chamber produces the negative pressure, to the connector lug unblock, and then makes the connector lug be launched out under the effect of launching the spring, avoids igniting to fill electric pile. Realize automatic to the rifle outage that charges, avoid the electric current to leak outward.

Description

Self-disconnection opening structure, charging pile with structure and method

Technical Field

The invention relates to the technical field of charging piles, in particular to a self-disconnecting port structure.

Background

The new energy automobile adopts unconventional automobile fuel as a power source, is the most common electric automobile, needs to be charged by using a charging pile, has the function similar to that of an oiling machine in a gas station, can be fixed on the ground or on the wall, is installed in public buildings (public buildings, markets, public parking lots and the like) and residential district parking lots or charging stations, and can charge various types of electric automobiles according to different voltage levels. The input end of the charging pile is directly connected with an alternating current power grid, and the output end of the charging pile is provided with a charging plug for charging the electric automobile. Fill electric pile and generally provide two kinds of charging methods of conventional charging and quick charge, people can use specific charging card to swipe the card and use on the human-computer interaction operation interface that fills electric pile and provide, carry out operations such as corresponding charging method, charging time, expense data printing, fill electric pile display screen and can show data such as the charge volume, expense, charging time.

The rifle that will charge all needs to be connected on new energy automobile when current fills electric pile charges, some car owners can forget the new energy automobile of oneself under the circumstances of careless attention, can start new energy automobile under the circumstances of connecting the rifle that charges, can break the connecting wire and directly damage even the mouth that charges that fills electric pile and new energy automobile, electric leakage phenomenon can take place, when producing the electric leakage, not only can cause the threat of personal safety to the pedestrian, the conflagration accident that can cause igniting even still can lead to the fact, great potential safety hazard has.

Disclosure of Invention

One of the purposes of the invention is to solve the problems that when a charging port of a charging pile and a charging port of a new energy automobile in the prior art are pulled, damaged and leaked, personal safety is threatened and a fire accident that ignition may occur.

The invention also aims to provide a charging pile with a self-disconnection structure.

The invention also aims to provide a self-breaking method.

In order to achieve one of the purposes, the invention adopts the following technical scheme: a self-disconnect structure, wherein the self-disconnect structure has a housing comprising: a butt joint port, a pneumatic cavity, a locking block, a movable cavity, a telescopic machine, a sliding plate, a power connection head, a power-on head and an ejection spring,

the air pressure cavity is radially distributed on the side of the butt joint, the locking block is arranged between the air pressure cavity and the butt joint in a sliding mode, and the locking block blocks the communication between the air pressure cavity and the butt joint.

The movable cavity is communicated with the air pressure cavity, the telescopic machine is arranged at the side end of the movable cavity, the telescopic machine is provided with a piston, the piston is arranged in the movable cavity, and the piston has the function of compressing air by sliding along the movable cavity.

The sliding plate is slidably mounted on the left side of the butt joint port, and the electric connector is embedded in the sliding plate. The power-on head is electrified with the power, the power-on head sets up connect the first left side end, the power-on head have with connect the left conductive head matched with spread groove of first, conductive head with the spread groove forms the plug-in type and connects.

The ejection spring is installed between the power head and the sliding plate. And a temperature sensor is arranged on the outer surface of the shell and is in communication connection with the telescopic machine in a wired or wireless mode.

In the technical scheme, when the connector lug is used, the connector lug at the tail part of the charging gun is inserted into the butt joint port of the shell of the self-disconnection port structure, so that the connector lug props against the sliding plate in the butt joint port and is contacted with the power connection head of the sliding plate, and meanwhile, the locking block at the side of the butt joint port is pushed towards the air pressure cavity;

then the connector lug is pushed to move leftwards, so that the sliding plate moves leftwards and compresses the ejection spring, after the left conductive head of the connector lug is connected with or contacted with an electrified connector lug, a telescopic machine in the control shell pushes a piston to compress air in a movable cavity, the air pressure cavity communicated with the movable cavity is boosted, the boosting size of the air in the air pressure cavity is set according to the connection strength of the connector lug or a charging gun and a cable, the air pressure in the air pressure cavity pushes a locking block to abut against the connector lug or push the locking block to be inserted into a locking groove of the connector lug, the left-right movement of the connector lug is limited and fixed (in a normal state), at the moment, the connector lug obtains current, and the charging gun can charge a new energy automobile.

When the rifle that charges is not pulled out the pulling, the connector lug of rifle afterbody produces the pulling force to the right:

firstly, if the rightward pulling force generated by the connector lug reaches the air pressure greater than the air pressure of the air pressure cavity and the connection strength of the connector lug, the charging gun and the cable is greater than the air pressure of the air pressure cavity, the connector lug pushes the locking block into the air pressure cavity, so that the connector lug is pulled out of a butt joint port of the shell, the charging gun is automatically powered off, and current leakage is avoided;

if the air pressure control of the air pressure cavity is improper, or the connection strength of the connector lug, the charging gun and the cable is not larger than the air pressure of the air pressure cavity, the connector lug cannot be pulled out to cause the cable to be broken, when electric leakage and fire occur, high temperature is detected through a temperature sensor on the outer surface of the shell, then the telescopic machine is controlled to pull the piston to move right, the air pressure cavity generates negative pressure, the locking block is separated from a locking groove of the connector lug, and finally the connector lug is pushed out of the butt joint under the action of an ejection spring to avoid ignition to the charging pile.

Further, in the embodiment of the invention, the telescopic machine adopts a motor with a telescopic function to drive the piston to slide left and right along the movable cavity.

Further, in the embodiment of the present invention, the self-disconnection structure further has a connector lug, and the connector lug is used for being inserted into the pair of interfaces to obtain current.

Furthermore, in the embodiment of the invention, the sliding plate is made of an insulating material, so that on one hand, current can be prevented from being led into the shell, on the other hand, the ejection spring is stabilized, and the phenomenon that the ejection spring deflects during movement to cause unbalanced force applied to the wire joint to cause abrasion is avoided.

Furthermore, in the embodiment of the invention, the outer surface of the connector lug is provided with a lock groove matched with the lock block, the left and right sides of the connector lug are limited by the lock block inserted into the lock groove for fixing, the left and right sides of the lock groove are of an outward-expanding inclined structure, and the left and right sides of the lock block are in fit with the left and right sides of the lock groove.

Furthermore, in the embodiment of the invention, the front end of the connector lug is provided with a butt joint which is abutted against the sliding plate, the butt joint is provided with a bayonet which is matched with the electric connector, when the bayonet is clamped with the butt joint, the electric conduction block of the connector lug obtains electric current and conducts the electric current to the cable, and finally, the charging head connected with the cable is charged to charge the new energy automobile.

Further, in the embodiment of the present invention, a sliding groove is arranged at the upper end of the housing, the sliding groove is connected with a sliding head in a sliding manner, a conductive plate is arranged at the lower end of the sliding head, the conductive plate is in close contact with an electric sheet installed at the bottom of the sliding groove, the electric sheet is electrically connected with the power head, the conductive plate is further connected with a power connector installed at the left end of the sliding groove in a clamping or tight manner, and the power connector is connected with a power supply.

Furthermore, in the embodiment of the present invention, the sliding head is made of an insulating material or the sliding head and the conductive plate are separated by an insulating material.

Further, in the embodiment of the present invention, the self-disconnecting port structure includes a charging connection post and a clamping post, the charging connection post is connected to the charging head, the clamping post is connected to the cable, and the other end of the cable is connected to the connector lug.

The left side of the charging connecting column is provided with a connecting port, the connecting port is in an outward-expanding shape, a metal ball is radially installed on the connecting port, and the metal ball is electrically connected with the charging head.

One end of the clamping column is inserted into the connecting port, the clamping column is in clearance fit with the connecting port, a long-strip-shaped limiting groove is formed in the clamping column, the left end and the right end of the limiting groove are blocked by the vertical wall, and the metal ball is arranged in the limiting groove.

When the cable was pulled, the cable can receive great stress with the junction that charges usually to the cable can be non-directional crooked with the junction that charges of head, twists reverse even, influences the joint strength of cable and the head that charges, and is fragile easily, just also takes place the electric leakage easily. Therefore, in order to solve the problem, the limiting groove of the clamping column is matched with the metal ball, so that the limiting groove of the clamping column can slide and rotate along the metal ball when the clamping column is pulled to deflect.

The invention has the beneficial effects that:

according to the invention, the connection between the tail part of the charging gun and the charging pile is designed into a plug-in connection mode through the structure effect of the self-disconnection port, so that the automatic tail-disconnection and power-off operation can be realized when the charging gun is pulled, and the potential safety hazard caused by current leakage is avoided. Wherein, when normal use, the connector lug can be locked by the locking piece, avoids being pulled out in disorder and not hard up by child, and when the connector lug was spured, the locking piece can be pulled out or the connector lug was broken by automatic under the air pressure effect that the atmospheric pressure chamber was set for again, detects to fire through temperature sensor, and control atmospheric pressure chamber produces the negative pressure, to the connector lug unblock, and then makes the connector lug be launched out under the effect of launching the spring, avoids igniting to fill electric pile. Realize automatic to the rifle outage that charges, avoid the electric current to leak outward. The problem of the connection of connector lug, the rifle that charges and cable damage when leaking electricity, threaten personal safety and the fire accident that probably takes place to ignite is solved.

In order to achieve the second purpose, the invention adopts the following technical scheme: a charging pile having a self-disconnection structure according to any one of the above objects.

In order to achieve the second purpose, the invention adopts the following technical scheme: a self-disconnect method, comprising the steps of:

inserting a connector lug at the tail of the charging gun from a shell butt joint port of the self-disconnection port structure, enabling the connector lug to abut against a sliding plate in the butt joint port and to be in contact with a power connection head of the sliding plate, and simultaneously pushing a locking block at the butt joint port side into an air pressure cavity;

then the connector lug is pushed to move leftwards, so that the sliding plate moves leftwards and compresses the ejection spring, after a conductive head on the left side of the connector lug is inserted into or contacted with an electrified connector lug, a telescopic machine in the control shell pushes a piston to compress air in a movable cavity, so that an air pressure cavity communicated with the movable cavity is boosted, the boosting size of the air in the air pressure cavity is set according to the connection strength of the connector lug or a charging gun and a cable, and the connector lug is limited to move leftwards and rightwards and is fixed by pushing a locking block to abut against the connector lug or pushing the locking block to be inserted into a locking groove of the connector lug through the air pressure of the air pressure cavity, so that the connector lug obtains current, and the charging gun can charge a new energy automobile;

when the charging gun is not pulled out and pulled, the connector lug at the tail part of the charging gun generates a rightward pulling force, and the air pressure of the air pressure cavity is set according to the connection strength of the connector lug, the charging gun and the cable, so that when the rightward pulling force generated by the connector lug reaches a value larger than the air pressure of the air pressure cavity, the connector lug extrudes the locking block and pushes the locking block into the air pressure cavity, the connector lug is pulled out of the butt joint port of the shell, the charging gun is automatically powered off, and current leakage is avoided;

if the air pressure control in atmospheric pressure chamber is improper, or the connector lug, the joint strength of rifle and cable of charging is not more than the air pressure in atmospheric pressure chamber, lead to the connector lug to fail to be pulled out and cause the cable to be broken by the snap, when producing the electric leakage and catching fire, temperature sensor through the casing surface detects high temperature, then control telescopic machine pulling piston moves to the right side, make the atmospheric pressure chamber produce the negative pressure, make the locking piece break away from the locked groove of connector lug, at last under the effect of launching the spring, release the interface with the connector lug, avoid igniting to fill electric pile.

Drawings

Fig. 1 is a schematic perspective view of a charging pile with a self-disconnecting structure according to an embodiment of the present invention.

Fig. 2 is a schematic perspective view of a self-disconnecting port structure according to an embodiment of the present invention.

Fig. 3 is a schematic perspective view of a connector lug according to an embodiment of the present invention.

Fig. 4 is a schematic structural diagram of a self-disconnection structure according to an embodiment of the present invention.

Fig. 5 is a schematic view illustrating a first connection effect between a self-disconnection structure and a connector lug according to an embodiment of the present invention.

Fig. 6 is a schematic diagram illustrating a second connection effect between the self-disconnection structure and the connector lug according to the embodiment of the present invention.

Fig. 7 is a partially enlarged view a of fig. 4.

Fig. 8 is a schematic diagram illustrating the effect of the power-off operation on the self-power-off structure according to the embodiment of the invention.

Fig. 9 is a schematic perspective view of a charging head according to an embodiment of the present invention.

Fig. 10 is a schematic structural diagram of a charging connection post and a clamping post according to an embodiment of the invention.

Fig. 11 is a schematic diagram illustrating the movement effects of the charging connection post and the clamping post according to the embodiment of the invention.

In the attached drawings

10. Casing 11, butt joint port 12 and air pressure cavity

13. Locking block 14, movable cavity 15 and telescopic machine

151. Piston 16, sliding plate 17 and electric connector

171. Conductive head 18, ejection spring 19 and power-on head

101. Temperature sensor 102, chute 103, slider

104. Conductive plate 105, electric piece 106, power connector

20. Connector lug 21, lock groove 22 and butt joint

23. Electricity transmission block

30. Charging head 31, charging connection column 32 and connector

33. Metal ball

40. Clamping column 41 and limiting groove

100. Charging pile

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention clear and fully described, embodiments of the present invention are further described in detail below with reference to the accompanying drawings. It is to be understood that the specific embodiments described herein are merely illustrative of some embodiments of the invention and are not limiting of the invention, and that all other embodiments obtained by those of ordinary skill in the art without the exercise of inventive faculty are within the scope of the invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "inner", "outer", "top", "bottom", "side", "vertical", "horizontal", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "a," "an," "first," "second," "third," "fourth," "fifth," and "sixth" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

For the purposes of simplicity and explanation, the principles of the embodiments are described by referring mainly to examples. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the embodiments. But it is obvious. To one of ordinary skill in the art, the embodiments may be practiced without limitation to these specific details. In some instances, well-known self-interrupting methods and structures have not been described in detail so as not to unnecessarily obscure the embodiments. In addition, all embodiments may be used in combination with each other.

The first embodiment is as follows:

a self-power-off structure, wherein, as shown in fig. 1 to 4, the self-power-off structure has a housing 10, the housing 10 is mounted on a charging pile 100, the housing 10 includes: a butt joint port 11, a pneumatic cavity 12, a locking block 13, a movable cavity 14, a telescopic machine 15, a sliding plate 16, an electric connector 17, an electric connector 19 and an ejection spring 18,

the air pressure cavity 12 is radially distributed on the side of the butt joint port 11, the locking block 13 is arranged between the air pressure cavity 12 and the butt joint port 11 in a sliding mode, and the locking block 13 blocks the communication between the air pressure cavity 12 and the butt joint port 11.

The movable cavity 14 is communicated with the air pressure cavity 12, the telescopic machine 15 is arranged at the side end of the movable cavity 14, the telescopic machine 15 is provided with a piston 151, the piston 151 is arranged in the movable cavity 14, and the telescopic machine 15 adopts a motor with a telescopic function to drive the piston 151 to slide left and right along the movable cavity 14.

The sliding plate 16 is slidably mounted on the left side of the docking port 11, and the electrical connector 17 is inserted into the sliding plate 16. The power head 19 is electrified with a power supply, the power head 19 is arranged at the left end of the power head 17, the power head 19 is provided with a connecting groove matched with the conductive head 171 at the left side of the power head 17, and the conductive head 171 is connected with the connecting groove in a plug-in mode.

An ejector spring 18 is mounted between the energizing head 19 and the slide plate 16. The outer surface of the shell 10 is provided with a temperature sensor 101, and the temperature sensor 101 is in communication connection with the telescopic machine 15 in a wired or wireless mode.

The self-cutting structure also has a connector lug 20, and the connector lug 20 is used for inserting into the interface 11 to obtain current.

The implementation steps are as follows:

when in use, as shown in fig. 5 and 6, the connector lug 20 at the tail part of the charging gun is inserted into the interface 11 from the shell 10 of the self-disconnection port structure, so that the connector lug 20 abuts against the sliding plate 16 in the interface 11 and is contacted with the electrical connector 17 of the sliding plate 16, and simultaneously, the locking block 13 at the side of the interface 11 is pushed into the air pressure chamber 12;

then the connector lug 20 is pushed to move leftwards, so that the sliding plate 16 moves leftwards and compresses the ejection spring 18, after the conductive head 171 on the left side of the electric connector lug 17 is inserted into or contacted with the electrified connector lug 19, the telescopic machine 15 in the control shell 10 pushes the piston 151 to compress the air of the movable cavity 14, so that the air pressure cavity 12 communicated with the movable cavity 14 is boosted, the boosting size of the air pressure cavity 12 is set according to the connection strength of the connector lug 20 or a charging gun and a cable, the air pressure of the air pressure cavity 12 pushes the locking block 13 to abut against the connector lug 20 or pushes the locking block 13 to be inserted into the locking groove 21 of the connector lug 20, the left and right movement of the connector lug 20 is limited and fixed (in a normal state), at the moment, the connector lug 20 obtains current, and the charging gun can charge a new energy automobile.

When the charging gun is not pulled out, the lug 20 at the tail of the charging gun generates a rightward pulling force:

firstly, if the rightward pulling force generated by the connector lug 20 reaches the air pressure greater than the air pressure of the air pressure cavity 12 and the connection strength of the connector lug 20, the charging gun and the cable is greater than the air pressure of the air pressure cavity 12, the connector lug 20 pushes the locking block 13 into the air pressure cavity 12, so that the connector lug 20 is pulled out of the butt joint port 11 of the shell 10, the charging gun is automatically powered off, and current leakage is avoided;

secondly, if the air pressure of the air pressure cavity 12 is controlled improperly, or the connection strength of the connector lug 20, the charging gun and the cable is not larger than the air pressure of the air pressure cavity 12, the connector lug 20 cannot be pulled out to cause the cable to be pulled off, when electric leakage occurs and fire is started, high temperature is detected through the temperature sensor 101 on the outer surface of the shell 10, then the telescopic machine 15 is controlled to pull the piston 151 to move right, the air pressure cavity 12 generates negative pressure, the locking block 13 is separated from the locking groove 21 of the connector lug 20, and finally the connector lug 20 is pushed out of the butt joint port 11 under the action of the ejection spring 18, so that the charging pile 100 is prevented from being ignited.

According to the invention, the connection between the tail part of the charging gun and the charging pile 100 is designed into a plug-in connection mode through the structure function of the self-disconnection port, so that the automatic tail-disconnection and power-off operation can be realized when the charging gun is pulled, and potential safety hazards caused by current leakage are avoided. Wherein, when normal use, connector lug 20 can be locked by locking piece 13, avoid being pulled out in disorder and not hard up by child, and when connector lug 20 was pulled, locking piece 13 can be pulled out or connector lug 20 is broken by automatic under the air pressure effect that atmospheric pressure chamber 12 was set for again, detect through temperature sensor 101 and catch fire, control atmospheric pressure chamber 12 produces the negative pressure, to connector lug 20 unblock, and then make connector lug 20 launch under the effect of launching spring 18 and go out, avoid igniting to fill electric pile 100. Realize automatic to the rifle outage that charges, avoid the electric current to leak outward. The problem of the connection of connector lug 20, the rifle that charges and cable damage when leaking electricity, threaten personal safety and the fire accident that probably takes place to ignite is solved.

As shown in fig. 4, the sliding plate 16 is made of an insulating material, so that on one hand, it is possible to avoid introducing current into the housing 10, and on the other hand, it acts as a stabilizing element for the ejector spring 18, thereby avoiding the ejector spring 18 from deflecting during movement, which would result in unbalanced force applied to the connector lug 20 and cause wear.

As shown in fig. 3 and 6, the outer surface of the terminal 20 has a locking groove 21 which is engaged with the locking block 13, the insertion of the locking block 13 into the locking groove 21 restricts the left and right movement of the terminal 20 for fixation, the left and right surfaces of the locking groove 21 have an inclined structure which is outwardly expanded, and the left and right surfaces of the locking block 13 are in contact with the left and right surfaces of the locking groove 21.

As shown in fig. 5, the front end of the connector lug 20 is provided with a butt joint 22 which is abutted against the sliding plate 16, the butt joint 22 is provided with a bayonet which is matched with the electric connector lug 17, when the bayonet is clamped with the butt joint 22, the transmission block 23 of the connector lug 20 transmits the acquired electric current to the cable, and finally the charging head 30 connected with the cable is powered to charge the new energy automobile.

As shown in fig. 7 and 8, the upper end of the casing 10 is provided with a sliding chute 102, the sliding chute 102 is slidably connected with a sliding head 103, the lower end of the sliding head 103 is provided with a conductive plate 104, the conductive plate 104 is in close contact with an electric sheet 105 installed at the bottom of the sliding chute 102, the electric sheet 105 is electrically connected with the power-on head 19, the conductive plate 104 is further in clamping connection or close connection with a power connector 106 installed at the left end of the sliding chute 102, and the power connector 106 is connected with a power supply. The slider 103 is made of an insulating material or the slider 103 and the conductive plate 104 are separated by an insulating material.

When needing to overhaul from the outage structure, sliding head 103 right can make power connection 106 and electric piece 105 cut off the power supply, and then makes circular telegram head 19 cut off the power supply, avoids endangering staff's safety.

Example two:

a self-breaking port structure has the same characteristic structure as the first embodiment, wherein, as shown in fig. 9 and 10, the self-breaking port structure comprises a charging connecting column 31 and a clamping column 40, the charging connecting column 31 is connected with a charging head 30, the clamping column 40 is connected with a cable, and the other end of the cable is connected with a connector 20.

A connection port 32 is provided on the left side of the charging connection post 31, the connection port 32 is formed in an outwardly enlarged shape, a metal ball 33 is radially mounted on the connection port 32, and the metal ball 33 is electrically connected to the charging head 30.

One end of the position clamping column 40 is inserted into the connecting port 32, the position clamping column 40 is in clearance fit with the connecting port 32, the position clamping column 40 is provided with a long-strip-shaped limiting groove 41, the left end and the right end of the limiting groove 41 are blocked by the vertical wall, and the metal ball 33 is arranged in the limiting groove 41.

When the cable is pulled, the connection of the cable and the charging head 30 usually receives a large stress, and the connection of the cable and the charging head 30 is not bent in a certain direction or even twisted, so that the connection strength of the cable and the charging head 30 is affected, and the cable is easy to damage and is easy to leak. Therefore, in order to solve the problem, as shown in fig. 11, the limiting groove 41 of the locking post 40 is matched with the metal ball 33, so that when the locking post 40 is pulled to deflect, the limiting groove 41 of the locking post 40 can slide and rotate along the metal ball 33, and by this way, the risk of damage and electric leakage can be greatly reduced, which is beneficial to ensuring that the cable cannot be damaged in advance and electric leakage can occur in the process of pulling the connector lug 20 out of the connector port.

Example three:

a charging pile 100 is shown in fig. 1, wherein the charging pile has a self-disconnection structure in any one of the above-mentioned embodiments.

Example four:

a self-disconnect method, comprising the steps of:

inserting a connector lug 20 at the tail of the charging gun into the interface 11 from the shell 10 of the self-disconnection port structure, enabling the connector lug 20 to abut against a sliding plate 16 in the interface 11 and to be in contact with an electric connector 17 of the sliding plate 16, and simultaneously pushing a locking block 13 at the side of the interface 11 into a pneumatic cavity 12;

then the connector lug 20 is pushed to move leftwards, so that the sliding plate 16 moves leftwards and compresses the ejection spring 18, after the conductive head 171 on the left side of the electric connector 17 is inserted into or contacted with the electrified connector 19, the telescopic machine 15 in the control shell 10 pushes the piston 151 to compress the air of the movable cavity 14, so that the air pressure cavity 12 communicated with the movable cavity 14 is boosted, the boosting size of the air pressure cavity 12 is set according to the connection strength of the connector lug 20 or a charging gun and a cable, the air pressure of the air pressure cavity 12 pushes the locking block 13 to abut against the connector lug 20 or pushes the locking block 13 to be inserted into the locking groove 21 of the connector lug 20 through the air pressure of the air pressure cavity 12, the left and right movement of the connector lug 20 is limited and fixed, at the time, the connector lug 20 obtains current, so that the charging gun can charge a new energy automobile;

when the charging gun is not pulled out and pulled, the connector lug 20 at the tail of the charging gun generates a rightward pulling force, and the air pressure of the air pressure cavity 12 is set according to the connection strength of the connector lug 20, the charging gun and the cable, so that when the rightward pulling force generated by the connector lug 20 reaches the air pressure greater than the air pressure of the air pressure cavity 12, the connector lug 20 extrudes the locking block 13, the locking block 13 is pushed into the air pressure cavity 12, the connector lug 20 is pulled out of the butt joint port 11 of the shell 10, the charging gun is automatically powered off, and current leakage is avoided;

if the air pressure of pneumatic chamber 12 is controlled improperly, or connector lug 20, the joint strength of rifle and cable that charges is not more than the air pressure of pneumatic chamber 12, lead to the connector lug 20 can not be pulled out and cause the cable to be broken, when producing the electric leakage and catching fire, detect high temperature through the temperature sensor 101 of casing 10 surface, then control telescopic machine 15 pulling piston 151 and move to the right, make pneumatic chamber 12 produce the negative pressure, make locking piece 13 break away from connector lug 20's locked groove 21, at last under the effect of ejection spring 18, push out connector lug 20 butt joint 11, avoid igniting to fill electric pile 100.

Although the illustrative embodiments of the present invention have been described above to enable those skilled in the art to understand the present invention, the present invention is not limited to the scope of the embodiments, and it is apparent to those skilled in the art that all the inventive concepts using the present invention are protected as long as they can be changed within the spirit and scope of the present invention as defined and defined by the appended claims.

Claims (10)

1. A self-disconnect structure, wherein the self-disconnect structure has a housing comprising:

a butt joint port;

the pneumatic cavities are radially distributed on the interface side;

the locking block is arranged between the air pressure cavity and the butt joint port in a sliding mode, and the locking block blocks the communication between the air pressure cavity and the butt joint port;

the movable cavity is communicated with the air pressure cavity;

the telescopic machine is arranged at the side end of the movable cavity, and is provided with a piston, the piston is arranged in the movable cavity, and the piston has the function of sliding along the movable cavity to compress air;

a sliding plate slidably mounted to the left side of the docking port;

the electric connector is embedded and mounted on the sliding plate;

the power-on head is electrified with a power supply, the power-on head is arranged at the left end of the power-on head, the power-on head is provided with a connecting groove matched with the conductive head at the left side of the power-on head, and the conductive head and the connecting groove form plug-in connection;

an ejection spring mounted between the power head and the slide plate.

2. The self-disconnecting port structure according to claim 1, wherein a temperature sensor is arranged on the outer surface of the shell, and the temperature sensor is in communication connection with the telescopic machine in a wired or wireless mode.

3. The self-disconnecting port structure according to claim 1, wherein the telescopic machine adopts a motor with a telescopic function to drive a piston to slide left and right along the movable cavity.

4. The self-power-off structure as recited in claim 1, wherein the self-power-off structure further has a connector lug for inserting into the mating interface to draw current.

5. The self-breaking structure according to claim 4, wherein the outer surface of the connector lug is provided with a locking groove matched with the locking block, the insertion of the locking block into the locking groove limits the left and right movement of the connector lug for fixing, the left and right surfaces of the locking groove are in an outward-expanding inclined structure, and the left and right surfaces of the locking block are in fit with the left and right surfaces of the locking groove.

6. The self-power-off port structure as claimed in claim 4, wherein the front end of the connector lug is provided with a butt joint which is abutted against the sliding plate, the butt joint is provided with a bayonet which is matched with the electric connector, when the bayonet is clamped with the butt joint, the electric conduction block of the connector lug conducts the obtained current to the cable, and finally the charging head connected with the cable is charged to charge the new energy automobile.

7. The self-power-off port structure according to claim 1, wherein a sliding groove is formed in the upper end of the housing, a sliding head is connected to the sliding groove in a sliding manner, a conductive plate is arranged at the lower end of the sliding head, the conductive plate is in close contact with an electric sheet arranged at the bottom of the sliding groove, the electric sheet is electrically connected with the power head, the conductive plate is further connected with a power connector arranged at the left end of the sliding groove in a clamping or tight manner, and the power connector is connected with a power supply.

8. The self-disconnection structure of claim 7, wherein the sliding head is made of an insulating material or the sliding head is separated from the conductive plate by an insulating material.

9. A charging pile having the self-disconnection structure according to any one of claims 1 to 8.

10. A self-disconnect method, comprising the steps of:

inserting a connector lug at the tail of the charging gun from a shell butt joint port of the self-disconnection port structure, enabling the connector lug to abut against a sliding plate in the butt joint port and to be in contact with a power connection head of the sliding plate, and simultaneously pushing a locking block at the butt joint port side into an air pressure cavity;

then the connector lug is pushed to move leftwards, so that the sliding plate moves leftwards and compresses the ejection spring, after a conductive head on the left side of the connector lug is inserted into or contacted with an electrified connector lug, a telescopic machine in the control shell pushes a piston to compress air in a movable cavity, so that an air pressure cavity communicated with the movable cavity is boosted, the boosting size of the air in the air pressure cavity is set according to the connection strength of the connector lug or a charging gun and a cable, and the connector lug is limited to move leftwards and rightwards and is fixed by pushing a locking block to abut against the connector lug or pushing the locking block to be inserted into a locking groove of the connector lug through the air pressure of the air pressure cavity, so that the connector lug obtains current, and the charging gun can charge a new energy automobile;

when the charging gun is not pulled out and pulled, the connector lug at the tail part of the charging gun generates a rightward pulling force, and the air pressure of the air pressure cavity is set according to the connection strength of the connector lug, the charging gun and the cable, so that when the rightward pulling force generated by the connector lug reaches a value larger than the air pressure of the air pressure cavity, the connector lug extrudes the locking block and pushes the locking block into the air pressure cavity, the connector lug is pulled out of the butt joint port of the shell, the charging gun is automatically powered off, and current leakage is avoided;

if the air pressure control in atmospheric pressure chamber is improper, or the connector lug, the joint strength of rifle and cable of charging is not more than the air pressure in atmospheric pressure chamber, lead to the connector lug to fail to be pulled out and cause the cable to be broken by the snap, when producing the electric leakage and catching fire, temperature sensor through the casing surface detects high temperature, then control telescopic machine pulling piston moves to the right side, make the atmospheric pressure chamber produce the negative pressure, make the locking piece break away from the locked groove of connector lug, at last under the effect of launching the spring, release the interface with the connector lug, avoid igniting to fill electric pile.

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