New energy automobile safety charging assembly

Abstract

The invention discloses a new energy automobile safety charging assembly, and belongs to the technical field of new energy automobiles, the new energy automobile safety charging assembly comprises a charging gun and a socket, the charging gun comprises a charging connector, a gun head body and a mounting cover, the charging connector and the mounting cover are fixedly connected with the gun head body through bolts, and two metal conductors coupled with an external charging pile are arranged in the charging connector; when the charging gun is inserted into the socket, the charging pile charges an automobile battery through the metal conductor, the metal conductor is connected to a rated circuit and the induction assembly, so that induction current is generated, the induction coil is electrified to generate an induction magnetic field, and electromagnetic adsorption force is generated on the movable clamping piece; when the battery is fully charged, the induction coil is powered off, the movable clamping piece is reset, and the charging gun and the socket are automatically separated by means of the boosting assembly.

Description

Technical Field

[0001] This invention discloses a safe charging component for new energy vehicles, belonging to the field of new energy vehicle technology. Background Technology

[0002] New energy vehicles refer to automobiles that use unconventional vehicle fuels as a power source (or use conventional vehicle fuels with new onboard power devices), integrating advanced technologies in vehicle power control and drive, resulting in vehicles with advanced technical principles and new technologies and structures. New energy vehicles include pure electric vehicles, range-extended electric vehicles, hybrid electric vehicles, fuel cell electric vehicles, and hydrogen engine vehicles. In new energy vehicles, batteries are commonly used as energy storage power sources. Charging these batteries requires a charging gun in conjunction with a charging station. Existing charging guns and car sockets use a mechanical locking structure during charging. After charging is complete, the charging gun needs to be manually unlocked and unplugged from the socket. However, due to the long charging time of car batteries, the conductors inside the charging gun remain connected to the battery after charging is complete, posing a safety hazard. Furthermore, the charging gun and socket do not automatically disconnect after charging; if the driver negligently fails to unplug the charging gun and drives away, it can damage the socket or charging gun. Summary of the Invention

[0003] The purpose of this invention is to solve the problems in the prior art and provide a safe charging component for new energy vehicles.

[0004] This invention achieves the above-mentioned objectives through the following technical solution: a safe charging component for new energy vehicles, comprising a charging gun and a socket. The charging gun includes a charging connector, a gun head body, and a mounting cover. The charging connector and the mounting cover are both fixedly connected to the gun head body by bolts. The charging connector has two metal conductors coupled to an external charging pile. The socket is installed on the vehicle and has a booster component that applies a force away from the socket to the charging connector. A locking mechanism is provided between the charging gun head and the socket. The locking mechanism includes a sensing component, an electromagnetic adsorption component, and a movable latch. The charging connector has a first mounting hole. The electromagnetic adsorption component is disposed in the first mounting hole. The movable latch is installed on the socket. The sensing component is installed in the gun head body. After the metal conductors are engaged with the socket, a rated current for charging the vehicle battery is passed through. After sensing the rated current signal, the sensing component outputs a corresponding induced current. The electromagnetic adsorption component is coupled to the sensing component and, upon receiving the induced current signal, generates an electromagnetic adsorption force on the movable latch, causing one end of the movable latch to slide into the first mounting hole, thereby locking the charging gun and the socket.

[0005] Preferably, the sensing component includes a magnetic ring, a Hall sensor, a capacitor, a resistor, a capacitor, and a proportional amplifier. The magnetic ring is located outside one of the metal conductors and has an opening. The Hall sensor is located inside the opening. The resistor is connected in series with the output terminal of the Hall sensor and the positive terminal of the proportional amplifier. The input terminal of the capacitor is coupled to the input terminal of the resistor and the output terminal of the Hall sensor. The negative terminal of the proportional amplifier is coupled to its output terminal. Both the proportional amplifier and the Hall sensor are coupled to a rated voltage V1. The capacitor is coupled to the input terminal of the proportional amplifier.

[0006] Preferably, the electromagnetic adsorption assembly includes an iron core, an induction coil, and a protective cover. The iron core and the induction coil are each provided in two sets. The induction coil is wound around the outside of the iron core. The protective cover is located outside the iron core and the induction coil and is fixedly connected to the charging connector by bolts. A control switch assembly is coupled between the induction coil and the output terminal of the proportional amplifier. The induction coil is also connected in series with a resistor.

[0007] Preferably, the control switch assembly includes a sliding rod, a first limiting bolt, a first spring, a fixed terminal block, a movable terminal block, a second spring, and a second limiting bolt. The sliding rod has an L-shaped structure, with one end having a guide rod that passes through the charging connector and the other end having a wedge-shaped surface with a height difference between the two ends of the wedge-shaped surface. The first limiting bolt passes through the sliding rod and is fixedly connected to the gun head body. The first spring is sleeved on the outside of the first limiting bolt and applies a force close to the charging connector to the sliding rod. Both the fixed terminal block and the movable terminal block are provided with terminals. The output terminal of the proportional amplifier is coupled to one of the terminals on the fixed terminal block, and the other terminal on the fixed terminal block is grounded. Both sets of induction coils are coupled to two terminals on the movable terminal block. The second limiting bolt passes through the movable terminal block and is fixedly connected to the gun head body. The second spring is located between the fixed terminal block and the movable terminal block and applies a force against the wedge-shaped surface to the movable terminal block. The gun head body also has a manual switch assembly for controlling the relative position of the movable terminal block and the movable terminal block.

[0008] Preferably, the manual switch assembly includes a button, a swing arm, and a rotating shaft. The middle part of the swing arm is rotatably mounted in the gun head body via the rotating shaft. The movable terminal block includes a mounting plate, a fixing plate, a positioning rod, a third spring, and a pressing rod. The terminal block is located on the mounting plate. The fixing plate is fixedly connected to the mounting plate via the positioning rod. The third spring is located inside the pressing rod. One end of the positioning rod extends to the inside of the second spring, and the other end extends into the pressing rod and abuts against the third spring. The button is mounted on one end of the swing arm, and the button is exposed on the outside of the mounting cover. The other end of the swing arm is located between the fixing plate and the mounting plate.

[0009] Preferably, the movable clip is provided in two sets, and the movable clip includes a limiting sleeve, a third limiting bolt and a fourth spring. The socket is provided with a countersunk hole for installing the limiting sleeve. The third limiting bolt passes through the socket and is fixedly connected to the limiting sleeve. The protective cover is provided with a positioning boss, and the limiting sleeve is provided with a positioning hole that cooperates with the positioning boss.

[0010] Preferably, the booster assembly is provided in two sets, and the booster assembly includes a fixing member, a push rod and a fifth spring. The socket is provided with a second mounting hole. The push rod slides and the fifth spring is disposed in the second mounting hole. One end of the push rod passes through the fixing member and the other end abuts against the fifth spring.

[0011] Compared with the prior art, the beneficial effects of the present invention are: By incorporating a sensing component, an electromagnetic adsorption component, a movable clip, and a booster component, the charging connector is inserted into the socket. When the metal conductor is energized, it charges the car battery. Simultaneously, the sensing component senses the rated current flowing through the metal conductor and generates an induced current, which energizes the induction coil to produce an induced magnetic field. This magnetic field then exerts an electromagnetic adsorption force on the movable clip, causing the limiting sleeve to slide into the first mounting hole. This locks the charging connector and socket in place, preventing them from detaching. Once the car battery is fully charged, the metal conductor is de-energized, and the induction coil no longer generates an induced current. The limiting sleeve then resets under the action of the fourth spring. The booster component then pushes the charging connector, causing it to automatically detach from the socket. This prevents the metal conductor and the car battery from remaining connected, and the charging gun and socket are not locked together, effectively ensuring the safety of the charging station and the vehicle. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of a safe charging component for new energy vehicles according to the present invention; Figure 2 This is a cross-sectional view of the charging gun in this invention; Figure 3 This is a schematic diagram of the charging gun and control switch assembly in this invention; Figure 4 for Figure 2 A magnified view of a section at point A in the middle; Figure 5 This is a schematic diagram of the movable terminal block and the fixed terminal block in this invention; Figure 6 This is a schematic diagram of the electromagnetic adsorption component in this invention; Figure 7 This is a schematic diagram of the socket structure in this invention; Figure 8 This is a schematic diagram of the socket and movable card in this invention; Figure 9This is a schematic diagram of the structure of the driving component in this invention; Figure 10 This is a circuit diagram of the sensing component and the electromagnetic adsorption component in this invention; Reference numerals: 1. Socket; 2. Mounting cover; 3. Button; 4. Gun head body; 5. Magnetic ring; 6. Metal conductor; 7. Charging connector; 8. Control switch assembly; 9. Swing arm; 10. Manual switch assembly; 11. Resistor II; 12. Electromagnetic adsorption assembly; 13. First mounting hole; 14. Guide rod; 15. Sliding rod; 16. Rotating shaft; 17. First spring; 18. First limit bolt; 19. Pressing rod; 20. Wedge-shaped surface; 21. Fixed terminal block; 22. Movable terminal block; 23. Mounting plate; 24. Fixing plate; 25. Third spring; 26. Positioning rod; 27. Second limit bolt; 28. Terminal block; 29. ​​Second spring; 30. Iron core; 31. Protective cover; 32. Induction coil; 33. Positioning boss; 34. Movable clip; 35. Boosting assembly; 36. Limiting sleeve; 37. Countersunk hole; 38. Third limit bolt; 39. Fourth spring; 40. Positioning hole; 41. Fixing component; 42. Push rod; 43. Fifth spring; 44. Hall sensor; 45. Resistor 1; 46. Capacitor 1; 47. Proportional amplifier; 48. Capacitor 2. Detailed Implementation

[0013] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0014] like Figures 1-10As shown, a safe charging component for new energy vehicles includes a charging gun and a socket 1. The charging gun includes a charging connector 7, a gun head body 4, and a mounting cover 2. The charging connector 7 and the mounting cover 2 are both fixedly connected to the gun head body 4 by bolts. The charging connector 7 has two metal conductors 6 that are coupled to an external charging pile. The socket 1 is installed on the vehicle and has a booster component 35 that applies a force away from the socket 1 to the charging connector 7. A locking mechanism is provided between the charging gun head and the socket 1. The locking mechanism includes a sensing component, an electromagnetic adsorption component 12, and a movable latch 34. The charging gun 7 is provided with a first mounting hole 13. The electromagnetic adsorption component 12 is disposed in the first mounting hole 13. The movable clip 34 is installed on the socket 1. The sensing component is installed in the gun head body 4. After the metal conductor 6 is fitted with the socket 1, the rated current for charging the car battery is passed through it. After the sensing component senses the rated current signal, it outputs the corresponding induced current. The electromagnetic adsorption component 12 is coupled to the sensing component and generates an electromagnetic adsorption force on the movable clip 34 after receiving the induced current signal, so that one end of the movable clip 34 slides into the first mounting hole 13 and locks the charging gun and the socket 1.

[0015] The sensing component includes a magnetic ring 5, a Hall sensor 44, a capacitor 46, a resistor 45, a capacitor 48, and a proportional amplifier 47. The magnetic ring 5 is located outside one of the metal conductors 6 and has an opening. The Hall sensor 44 is located inside the opening. The resistor 45 is connected in series with the output terminal of the Hall sensor 44 and the positive terminal of the proportional amplifier 47. The input terminal of the capacitor 46 is coupled to the input terminal of the resistor 45 and the output terminal of the Hall sensor 44. The negative terminal of the proportional amplifier 47 is coupled to its output terminal, and both the proportional amplifier 47 and the Hall sensor 44 are coupled to a rated voltage V1. The capacitor 48 is coupled to the input terminal of the proportional amplifier 47. When a rated current is passed through the metal conductor 6 to charge the car battery, the surrounding magnetic field will change. The magnetic ring 5 can enhance the magnetic field strength and generate a Hall voltage on the Hall sensor 44, and at the same time generate a current. After being filtered by the capacitor and the proportional amplifier 47, an induced current with load-carrying capacity is formed, and the electromagnetic adsorption component 12 is thus induced to pass through the induced current.

[0016] The electromagnetic adsorption assembly 12 includes an iron core 30, an induction coil 32, and a protective cover 31. Two sets of the iron core 30 and induction coil 32 are provided. The induction coil 32 is wound around the outside of the iron core 30. The protective cover 31 is located outside the iron core 30 and the induction coil 32 and is fixedly connected to the charging connector 7 by bolts. A control switch assembly 8 is coupled between the induction coil 32 and the output terminal of the proportional amplifier 47. A resistor 11 is also connected in series with the induction coil 32. After an induced current is passed through the induction coil 32, an induced magnetic field is generated, and the strength of the induced magnetic field is enhanced under the action of the iron core 30, thereby generating an electromagnetic adsorption force on the movable clip 34. This causes the movable clip 34 to be inserted into the first mounting hole 13 and cooperate with the protective cover 31, thus locking the socket 1 and the charging gun.

[0017] The control switch assembly 8 includes a sliding rod 15, a first limiting bolt 18, a first spring 17, a fixed terminal block 21, a movable terminal block 22, a second spring 29, and a second limiting bolt 27. The sliding rod 15 has an L-shaped structure, with a guide rod 14 passing through the charging connector 7 at one end and a wedge-shaped surface 20 at the other end. The two ends of the wedge-shaped surface 20 have a height difference. The first limiting bolt 18 passes through the sliding rod 15 and is fixedly connected to the gun head body 4. The first spring 17 is sleeved on the outside of the first limiting bolt 18 and applies pressure to the sliding rod 15. Approaching the charging connector 7, both the fixed terminal block 21 and the movable terminal block 22 are provided with terminals 28. The output terminal of the proportional amplifier 47 is coupled to one of the terminals 28 on the fixed terminal block 21, and the other terminal 28 on the fixed terminal block 21 is grounded. Both sets of induction coils 32 are coupled to the two terminals 28 on the movable terminal block 22. The second limiting bolt 27 passes through the movable terminal block 22 and is fixedly connected to the gun head body 4. The second spring 29 is located between the fixed terminal block 21 and the movable terminal block 22, and exerts a force on the movable terminal block 21. 2. A force is applied to the wedge-shaped surface 20. The gun head body 4 also contains a manual switch assembly 10 that controls the relative position of the movable terminal block 22 and the movable terminal block 22. When the charging gun is inserted into the socket 1, one end of the guide rod 14 first contacts the socket 1. Then, the guide rod 14 slides into the gun head body 4, compressing the first spring 17. The sliding rod 15 begins to slide away from the socket 1, while the wedge-shaped surface 20 moves synchronously with the sliding rod 15. At this time, the contact position between the upper end of the movable terminal block 22 and the wedge-shaped surface 20 changes. Under the push of the wedge-shaped surface 20, the movable terminal plate 22 slides toward the fixed terminal plate 21, so that the terminals 28 of the two collide. In this way, the sensing component and the electromagnetic adsorption component 12 are connected. When the metal conductor 6 is inserted into the socket 1 and energized, the charging gun is held still by hand. The induced current generated by the sensing component flows into the induction coil 32, thereby generating an electromagnetic adsorption force on the movable clip 34, so that one end of the movable clip 34 slides into the first mounting hole 13. In this way, the socket 1 and the charging gun are locked together until the car battery charging is finished.

[0018] The manual switch assembly 10 includes a button 3, a swing arm 9, and a rotating shaft 16. The middle part of the swing arm 9 is rotatably mounted inside the gun head body 4 via the rotating shaft 16. The movable terminal block 22 includes a mounting plate 23, a fixing plate 24, a positioning rod 26, a third spring 25, and a pressing rod 19. The terminal block 28 is located on the mounting plate 23. The fixing plate 24 is fixedly connected to the mounting plate 23 via the positioning rod 26. The third spring 25 is located inside the pressing rod 19. One end of the positioning rod 26 extends to the inside of the second spring 29, and the other end extends into the pressing rod 19 and abuts against the third spring 25. The button 3 is mounted on one end of the swing arm 9, and the button 3 is exposed on the outside of the mounting cover 2. The other end of the swing arm 9 is located between the fixing plate 24 and the mounting plate 23. When the pressing rod 19 abuts against the highest point of the wedge-shaped surface 20, the second spring 29 drives the movable terminal block 22 away from the fixed terminal block 21. The terminals on the movable terminal block 22 and the fixed terminal block 21 are connected. When the terminals 28 are in a non-contact state, the sensing component and the electromagnetic adsorption component 12 are disconnected. When the charging gun is plugged into the socket 1, as the pressure rod 19 slides toward the lowest point of the wedge surface 20, the force of the third spring 25 on the movable terminal plate 22 gradually becomes greater than the reaction force of the second spring 29 on the movable terminal plate 22, causing the movable terminal plate 22 to move toward the fixed terminal plate 21 until the terminals 28 of the two contacts. During the charging process of the charging gun for the car battery, if the car battery is not fully charged and the driver does not want to continue charging, the button 3 is pressed, causing one end of the swing arm 9 to rotate. The other end of the swing arm 9 then moves the movable terminal plate 22 away from the fixed terminal plate 21, and the terminals 28 of the two no longer contact each other. At this time, the electromagnetic adsorption component 12 is de-energized, the movable latch 34 automatically resets, and the charging gun is disengaged from the socket 1 under the action of the push component 35.

[0019] Two sets of movable clips 34 are provided, and each movable clip 34 includes a limiting sleeve 36, a third limiting bolt 38, and a fourth spring 39. The socket 1 is provided with a countersunk hole 37 for installing the limiting sleeve 36. The third limiting bolt 38 passes through the socket 1 and is fixedly connected to the limiting sleeve 36. The protective cover 31 is provided with a positioning boss 33. The limiting sleeve 36 is provided with a positioning hole 40 that cooperates with the positioning boss 33. When the induction coil 32 is energized, it generates a magnetic field, which generates an electromagnetic attraction force on the limiting sleeve 36, causing the limiting sleeve 36 to slide into the first mounting hole 13 and compress the fourth spring 39 until the positioning hole 40 cooperates with the positioning boss 33, thereby locking the charging gun and the socket 1.

[0020] Two sets of booster components 35 are provided, and each booster component 35 includes a fixing member 41, a push rod 42, and a fifth spring 43. A second mounting hole is provided on the socket 1. The push rod 42 slides and the fifth spring 43 is located in the second mounting hole. One end of the push rod 42 passes through the fixing member 41, and the other end abuts against the fifth spring 43. When the charging gun is inserted into the socket 1, the charging connector 7 first abuts against the push rod 42. After the push rod 42 is subjected to pressure, it compresses the fifth spring 43. The positioning rod 26 slowly retracts into the second mounting hole until the metal conductor 6 is engaged with the socket 1, thereby realizing the charging of the car battery. At this time, the locking mechanism will lock the charging gun and the socket 1. When the charging is finished, the locking mechanism no longer restricts the movement of the charging gun. At this time, the charging gun automatically disengages from the socket 1 under the drive of the booster component 35.

[0021] Working principle: When charging the car battery, the charging gun is inserted into the socket 1. At this time, the push rod 42 is pressed into the second mounting hole after contacting the charging connector 7, and the guide rod 14 is pressed into the gun head body 4 after contacting the socket 1. This causes the movable terminal plate 22 to move towards the fixed terminal plate 21 under the action of the wedge surface 20 until the terminals 28 of the two contact. When the metal conductor 6 is engaged with the socket 1, the external charging pile begins to charge the car battery. The rated current is passed through the metal conductor 6, and the sensing component generates an induced current. Thus, the induction coil 32 generates an electromagnetic attraction force on the movable clip 34 after the induced current is passed through it, thereby allowing the limiting sleeve 36 to slide into the first mounting hole. The socket 1 and the charging gun are locked together by the protective cover 31. When the car battery is fully charged, the charging pile is automatically powered off, and the metal conductor 6 is no longer energized. At this time, the sensing component no longer generates induced current, so the induction coil 32 no longer generates electromagnetic attraction force on the limiting sleeve 36. Under the action of the fourth spring 39, the limiting sleeve 36 slides out of the first mounting hole 13. Then, the charging gun is automatically disengaged from the socket 1 under the action of the booster component 35. This can prevent the car battery from being connected to the metal conductor 6, and also prevent the driver from starting the car without releasing the locking of the socket 1 and the charging gun, which would damage the socket 1 or the charging gun.

[0022] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0023] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A new energy vehicle safe charging assembly, comprising a charging gun and a socket (1), characterized in that, The charging gun comprises a charging connector (7), a gun head body (4) and a mounting cover (2), the charging connector (7) and the mounting cover (2) are both fixedly connected with the gun head body (4) through bolts, the charging connector (7) has two metal conductors (6) coupled with an external charging pile, the socket (1) is mounted on a car, the socket (1) has a boosting assembly (35) for applying a force away from the socket (1) to the charging connector (7), the charging gun head and the socket (1) have a locking mechanism, the locking mechanism comprises an induction assembly, an electromagnetic adsorption assembly (12) and a movable clamping piece (34), the charging connector (7) is provided with a first mounting hole (13), the electromagnetic adsorption assembly (12) is arranged in the first mounting hole (13), the movable clamping piece (34) is mounted on the socket (1), the induction assembly is mounted in the gun head body (4), after the metal conductor (6) is embedded in the socket (1), a rated current for charging the car battery is passed, after the induction assembly senses a rated current signal, a corresponding induction current is output, the electromagnetic adsorption assembly (12) is coupled with the induction assembly, and after receiving the induction current signal, an electromagnetic adsorption force is generated on the movable clamping piece (34) to make one end of the movable clamping piece (34) slide into the first mounting hole (13) so that the charging gun and the socket (1) are locked.

2. The new energy vehicle safe charging assembly according to claim 1, characterized in that, The induction assembly comprises a magnetic conducting ring (5), a Hall sensor (44), a capacitor one (46), a resistor one (45), a capacitor two (48) and a proportional amplifier (47), the magnetic conducting ring (5) is located outside one of the metal conductors (6), and the magnetic conducting ring (5) has an opening, the Hall sensor (44) is located in the opening, the resistor one (45) is connected in series between the output end of the Hall sensor (44) and the positive electrode of the proportional amplifier (47), the input end of the capacitor one (46) is coupled to the input end of the resistor one (45) and the output end of the Hall sensor (44), the negative electrode of the proportional amplifier (47) is coupled with the output end thereof, and the proportional amplifier (47) and the Hall sensor (44) are both coupled with a rated voltage V1, and the capacitor two (48) is coupled to the input end of the proportional amplifier (47).

3. The new energy vehicle safe charging assembly according to claim 2, characterized in that, The electromagnetic adsorption assembly (12) comprises a core (30), an induction coil (32) and a protective cover (31), the core (30) and the induction coil (32) are both provided with two groups, the induction coil (32) is wound outside the core (30), the protective cover (31) is located outside the core (30) and the induction coil (32), and is fixedly connected with the charging connector (7) through bolts, a control switch assembly (8) is coupled between the induction coil (32) and the output end of the proportional amplifier (47), and the induction coil (32) is further connected in series with a resistor two (11).

4. The new energy vehicle safe charging assembly according to claim 3, characterized in that, The control switch assembly (8) comprises a sliding rod (15), a first limiting bolt (18), a first spring (17), a fixed terminal plate (21), a movable terminal plate (22), a second spring (29) and a second limiting bolt (27), the sliding rod (15) is in L-shaped structure, one end of the sliding rod (15) is provided with a guide rod (14) penetrating the charging connector (7), the other end is provided with a wedge surface (20), the two ends of the wedge surface (20) have a height difference, the first limiting bolt (18) is fixedly connected with the gun head body (4) after penetrating the sliding rod (15), the first spring (17) is sleeved on the outside of the first limiting bolt (18) and applies a force to the sliding rod (15) close to the charging connector (7), the fixed terminal plate (21) and the movable terminal plate (22) are both provided with terminal posts (28), one of the terminal posts (28) on the fixed terminal plate (21) is coupled with the output end of the proportional amplifier (47), the other terminal post (28) on the fixed terminal plate (21) is grounded, the two groups of inductive coils (32) are both coupled with the two terminal posts (28) on the movable terminal plate (22), the second limiting bolt (27) is fixedly connected with the gun head body (4) after penetrating the movable terminal plate (22), the second spring (29) is located between the fixed terminal plate (21) and the movable terminal plate (22) and applies a force to the movable terminal plate (22) to resist the wedge surface (20), the gun head body (4) is further provided with a manual switch assembly (10) for controlling the relative position of the movable terminal plate (22) and the movable terminal plate (22).

5. The new energy vehicle safe charging assembly according to claim 4, characterized in that, The manual switch assembly (10) comprises a key (3), a swing arm (9) and a rotating shaft (16), the middle part of the swing arm (9) is rotatably installed in the gun head body (4) through the rotating shaft (16), the movable terminal plate (22) comprises a mounting plate (23), a fixed plate (24), a positioning rod (26), a third spring (25) and a pressing rod (19), the terminal post (28) is located on the mounting plate (23), the fixed plate (24) is fixedly connected with the mounting plate (23) through the positioning rod (26), the third spring (25) is located on the inside of the pressing rod (19), one end of the positioning rod (26) extends to the inside of the second spring (29), the other end extends into the pressing rod (19) and abuts against the third spring (25), the key (3) is installed at one end of the swing arm (9) and exposed on the outside of the mounting cover (2), the other end of the swing arm (9) is located between the fixed plate (24) and the mounting plate (23).

6. The new energy vehicle safe charging assembly according to claim 3, characterized in that, The activity card piece (34) is provided with two groups, and the activity card piece (34) includes a limiting sleeve (36), a third limiting bolt (38) and a fourth spring (39), the socket (1) is provided with a counterbore (37) for installing the limiting sleeve (36), the third limiting bolt (38) is fixedly connected with the limiting sleeve (36) after penetrating through the socket (1), the protective cover (31) is provided with a positioning boss (33), and the limiting sleeve (36) is provided with a positioning hole (40) matched with the positioning boss (33).

7. The new energy vehicle safe charging assembly according to claim 6, characterized in that, The boost assembly (35) is provided with two groups, and the boost assembly (35) includes a fixing piece (41), a push rod (42) and a fifth spring (43), the socket (1) is provided with a second mounting hole, the push rod (42) and the fifth spring (43) are arranged in the second mounting hole in a sliding mode, one end of the push rod (42) penetrates through the fixing piece (41) and the other end is in abutment with the fifth spring (43).

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