New energy automobile charging anti-overcharging mechanism

Abstract

The invention provides a new energy automobile charging anti-overcharging mechanism, and relates to the technical field of new energy automobile charging. The new energy automobile charging anti-overcharging mechanism comprises a shell, charging bases are transversely arranged in the shell, a charging head is arranged at the front end of one charging base, a plug is fixedly connected to the center of the rear end face of the charging head, a falling-off structure is arranged on the rear portion of the outer side wall of the plug, and the falling-off structure comprises a plurality of second permanent magnets. And the plurality of second permanent magnets are respectively arranged at the rear parts of the two side walls of the plug, and the plurality of second permanent magnets are arranged up and down. When the current is reduced, the plurality of third electromagnets are powered off, the plurality of fourth electromagnets are powered on, the first contact and the plug are pushed out forwards through the tension of a spring on the spring telescopic rod assembly, and the plurality of second permanent magnets are attracted by the plurality of fourth electromagnets, so that the first contact is separated from the second contact, and overcharging is prevented.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of new energy automobile charging, in particular to a new energy automobile charging overcharging prevention mechanism. BACKGROUND

[0002] The new energy automobile refers to an automobile adopting a new energy as a power source, and is mainly different from a traditional internal combustion engine automobile. The development of the new energy automobile aims to reduce the dependence on fossil fuels, reduce automobile exhaust emission, protect the environment and promote the sustainable development of the automobile industry. The new energy automobile charging technology is an important link for promoting the popularization and development of electric vehicles. With the rapid growth of the new energy automobile market, the progress of the charging technology is crucial for improving user experience, shortening charging time, improving charging efficiency and ensuring charging safety.

[0003] There are still some problems in the existing new energy automobile charging overcharging prevention mechanism. The traditional charging interface needs to be manually disconnected by the user after charging is completed. If the user does not timely pull out the gun, overcharging risks still exist. Although some automatic power-off devices only realize charging termination through circuit control, the reliable separation of the charging connection is not ensured from the mechanical level. Therefore, the technical personnel in the field provide a new energy automobile charging overcharging prevention mechanism to solve the problems in the above background technology. SUMMARY

[0004] (I) Technical problems solved

[0005] In view of the deficiencies in the prior art, the application provides a new energy automobile charging overcharging prevention mechanism, which solves the problem that the traditional charging interface needs to be manually disconnected by the user after charging is completed. If the user does not timely pull out the gun, overcharging risks still exist. Although some automatic power-off devices only realize charging termination through circuit control, the reliable separation of the charging connection is not ensured from the mechanical level.

[0006] (II) Technical solutions

[0007] In order to achieve the above purpose, the application is implemented by the following technical solutions: a new energy automobile charging overcharging prevention mechanism, comprising a shell, a plurality of charging seats are arranged transversely in the shell, one end of each charging seat is provided with a charging head, the rear end face of the charging head is fixedly connected with a plug, and the outer side wall of the plug is provided with a falling structure.

[0008] The shedding structure comprises a plurality of second permanent magnets, the plurality of second permanent magnets are arranged at the rear of the two side walls of the plug respectively, and the plurality of second permanent magnets are arranged in an upper and lower arrangement, arc-shaped plates are arranged at the inner sides of the two charging bases located at the outer sides of the plurality of second permanent magnets, a plurality of third electromagnets are arranged in an upper and lower arrangement at the rear of the center of one side wall of the four arc-shaped plates, and fourth electromagnets are fixedly connected to the side wall of the four arc-shaped plates located at the front ends of the plurality of third electromagnets.

[0009] Cooling structures are arranged at the centers of the inner walls of the two charging bases, and sealing structures are arranged at the centers of the front end faces of the two charging bases.

[0010] Preferably, taking one of the cooling structures as an example, the cooling structure comprises a cavity, a heat-absorbing base material is fixedly connected to the inner lower part of the cavity, air inlet holes and air outlet holes are respectively arranged at the inner sides of the front end of the upper part of the heat-absorbing base material, five partition plates are arranged in a transverse arrangement on the upper face of the heat-absorbing base material, two partition plates located at the sides are fixedly connected to the rear inner wall of the cavity, the front ends of two partition plates located between the three rear partition plates are fixedly connected to the front inner wall of the cavity, three heat dissipation fins are arranged between the five partition plates, and a heat dissipation fan is fixedly connected to the inner part of the air outlet hole.

[0011] Preferably, a first dustproof net is fixedly connected to the inner part of the air inlet hole, and a second dustproof net is fixedly connected to the inner part of the air outlet hole.

[0012] Preferably, the sealing structure comprises a first rubber pad, the first rubber pad is sleeved on the rear end face of the charging head located at the outer side of the plug, storage grooves are arranged at the edge of the front end face of the two charging bases, first electromagnets are fixedly connected to the inner walls of the two storage grooves, second rubber pads are fixedly connected to the inner side walls of the two first electromagnets, a first permanent magnet is fixedly connected to the rear end face of the first rubber pad, a third rubber pad is fixedly sleeved on the rear side wall of the first permanent magnet, and the third rubber pad is slidingly connected to the inner side of the two second rubber pads.

[0013] Preferably, vertical plates are fixedly connected to the inner rear parts of the two charging bases, spring telescopic rod assemblies are fixedly connected to the center of the front end faces of the two vertical plates, current inductors are fixedly connected to the front end faces of the two spring telescopic rod assemblies, helical wires are sleeved on the outer sides of the two current inductors, first contacts are fixedly connected to the output ends of the two helical wires, the first contacts are fixedly connected to the front end faces of the two current inductors respectively, fixed plates are fixedly connected to the inner parts of the two charging bases located at the front ends of the two helical wires, and sleeves are fixedly connected to the front end faces of the two fixed plates.

[0014] Preferably, the spring telescopic rod assembly is a combination of a spring arranged on the outer side of a telescopic rod.

[0015] Preferably, both of the spiral wire output ends are fixedly connected with connecting wires.

[0016] Preferably, four supporting rods are arranged through the front end surface of the first contact in a rectangular manner, four stop rings are fixedly connected to the front ends of the four supporting rods, and a contact sensor is fixedly connected to the upper center of the front end surface of the first contact.

[0017] (Three) beneficial effects

[0018] The application provides a new energy automobile charging overcharge prevention mechanism.

[0019] 1. In the application, when the current decreases, a pulse signal is sent to the control system, the control system controls the multiple third electromagnets to be powered off and the multiple fourth electromagnets to be powered on, the first contact and the plug are pushed forward by the tension of the spring on the spring telescopic rod assembly, the multiple second permanent magnets are attracted by the multiple fourth electromagnets, so that the first contact and the second contact are separated, thereby preventing overcharging.

[0020] 2. In the application, during the charging process, the temperature inside the charging base is detected by a temperature sensor inside the charging base, when the temperature is too high, a cooling fan is started, the cooling fan exhausts the air inside the cavity, a negative pressure is generated inside the cavity, air is sucked in through the air inlet, the air enters the cavity through the first dust screen, and the heat inside the charging base is transferred to the three heat dissipation fins through the heat absorbing base material, the heat on the three heat dissipation fins is blown out through the flowing air current, thereby preventing overheating during the charging process and affecting the use of the equipment.

[0021] 3. In the application, the third rubber pad on the rear side of the first permanent magnet is inserted into the inside of the second rubber pad, and the control system controls the first electromagnet to be powered on to generate magnetism, the first electromagnet absorbs the first permanent magnet to the rear end, the second rubber pad and the third rubber pad are pressed against each other, the pre-tightening force is improved, the sealing property is improved, dust and water vapor in the outside are prevented from entering the inside of the charging base during the charging process, and the electronic equipment inside the charging base is prevented from being affected. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 is a perspective view of the application;

[0023] Figure 2 is a perspective view of the application;

[0024] Figure 3 is a perspective view of the application;

[0025] Figure 4 is a partial perspective view of the cooling structure of the application;

[0026] Figure 5 As Figure 3 An enlarged schematic view at A in the middle;

[0027] Figure 6 A partial exploded view in the present application;

[0028] Figure 7 A top view of the present application.

[0029] Wherein, 1, shell; 2, charging seat; 3, charging head; 4, current inductor; 5, helical line; 6, second contact; 7, plug; 8, cooling structure; 9, sealing structure; 10, shedding structure; 11, vertical plate; 12, sleeve; 13, fixed plate; 14, first contact; 15, spring telescopic rod assembly; 16, connecting line; 17, support rod; 18, contact sensor; 19, retaining ring;

[0030] 801, phase change base material; 802, partition; 803, heat dissipation fin; 804, first dust screen; 805, second dust screen; 806, heat dissipation fan; 807, cavity; 808, air inlet hole; 809, air outlet hole;

[0031] 901, first rubber pad; 902, storage tank; 903, first electromagnet; 904, second rubber pad; 905, first permanent magnet; 906, third rubber pad;

[0032] 1001, second permanent magnet; 1002, arc plate; 1003, third electromagnet; 1004, fourth electromagnet. DETAILED DESCRIPTION

[0033] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0034] Embodiment one:

[0035] As Figures 1-7 shown, the present application provides a new energy automobile charging anti-overcharge mechanism, including shell 1, shell 1 inside transverse arrangement is equipped with charging seat 2, one of which charging seat 2 front end is equipped with charging head 3, charging head 3 rear end surface center is fixedly connected with plug 7, plug 7 outer wall rear part is equipped with shedding structure 10.

[0036] As Figure 1 , 2As shown in FIGS. 3 and 6, the falling structure 10 includes a plurality of second permanent magnets 1001, which are arranged on the rear of the two side walls of the plug 7 and arranged in an up-down manner. Arc-shaped plates 1002 are arranged on the inner sides of the two charging bases 2 near the two sides. A plurality of third electromagnets 1003 are arranged on the rear of the center of one side wall of the four arc-shaped plates 1002 in an up-down manner. Fourth electromagnets 1004 are arranged on the side wall of the four arc-shaped plates 1002 in front of the plurality of third electromagnets 1003. The contact sensor 18 transmits a pulse signal to the control system. At this time, the spring in the spring telescopic rod assembly 15 is compressed, the telescopic rod is retracted, the first contact 14 is moved backward, the plurality of third electromagnets 1003 are controlled to start, the plurality of third electromagnets 1003 magnetically attract the plurality of second permanent magnets 1001, and the plug 7 is prevented from falling off. When the current decreases, a pulse signal is sent to the control system, the control system controls the plurality of third electromagnets 1003 to be powered off, the plurality of fourth electromagnets 1004 are powered on, the first contact 14 and the plug 7 are pushed forward by the tension of the spring in the spring telescopic rod assembly 15, the plurality of second permanent magnets 1001 are attracted by the plurality of fourth electromagnets 1004, the first contact 14 and the second contact 6 are separated, and overcharging is prevented.

[0037] The cooling structure 8 is arranged on the inner wall center of the two charging bases 2. The sealing structure 9 is arranged on the front end face center of the two charging bases 2. The second contact 6 is fixedly connected to the rear end face of the plug 7.

[0038] As shown in FIGS. 3 and 6, the falling structure 10 includes a plurality of second permanent magnets 1001, which are arranged on the rear of the two side walls of the plug 7 and arranged in an up-down manner. Arc-shaped plates 1002 are arranged on the inner sides of the two charging bases 2 near the two sides. A plurality of third electromagnets 1003 are arranged on the rear of the center of one side wall of the four arc-shaped plates 1002 in an up-down manner. Fourth electromagnets 1004 are arranged on the side wall of the four arc-shaped plates 1002 in front of the plurality of third electromagnets 1003. The contact sensor 18 transmits a pulse signal to the control system. At this time, the spring in the spring telescopic rod assembly 15 is compressed, the telescopic rod is retracted, the first contact 14 is moved backward, the plurality of third electromagnets 1003 are controlled to start, the plurality of third electromagnets 1003 magnetically attract the plurality of second permanent magnets 1001, and the plug 7 is prevented from falling off. When the current decreases, a pulse signal is sent to the control system, the control system controls the plurality of third electromagnets 1003 to be powered off, the plurality of fourth electromagnets 1004 are powered on, the first contact 14 and the plug 7 are pushed forward by the tension of the spring in the spring telescopic rod assembly 15, the plurality of second permanent magnets 1001 are attracted by the plurality of fourth electromagnets 1004, the first contact 14 and the second contact 6 are separated, and overcharging is prevented. Figure 1 , 2 , 4 and 6, the cooling structure 8 includes a cavity 807, a heat-absorbing base material 801 is fixedly connected to the inner lower part of the cavity 807, air inlet holes 808 and air outlet holes 809 are respectively arranged on the two side walls of the front inner wall of the cavity 807 above the heat-absorbing base material 801, five partition plates 802 are arranged on the upper end face of the heat-absorbing base material 801 in a transverse manner, two partition plates 802 on the two side walls and the partition plate 802 in the center are fixedly connected to the rear inner wall of the cavity 807, the front ends of the two partition plates 802 between the three partition plates 802 on the rear are fixedly connected to the front inner wall of the cavity 807, three heat dissipation fins 803 are arranged between the five partition plates 802, and a heat dissipation fan 806 is fixedly connected to the inner part of the air outlet hole 809.

[0039] A first dustproof net 804 is fixedly connected to the inner part of the air inlet hole 808, and a second dustproof net 805 is fixedly connected to the inner part of the air outlet hole 809.

[0040] As shown in FIGS. 3 and 6, the falling structure 10 includes a plurality of second permanent magnets 1001, which are arranged on the rear of the two side walls of the plug 7 and arranged in an up-down manner. Arc-shaped plates 1002 are arranged on the inner sides of the two charging bases 2 near the two sides. A plurality of third electromagnets 1003 are arranged on the rear of the center of one side wall of the four arc-shaped plates 1002 in an up-down manner. Fourth electromagnets 1004 are arranged on the side wall of the four arc-shaped plates 1002 in front of the plurality of third electromagnets 1003. The contact sensor 18 transmits a pulse signal to the control system. At this time, the spring in the spring telescopic rod assembly 15 is compressed, the telescopic rod is retracted, the first contact 14 is moved backward, the plurality of third electromagnets 1003 are controlled to start, the plurality of third electromagnets 1003 magnetically attract the plurality of second permanent magnets 1001, and the plug 7 is prevented from falling off. When the current decreases, a pulse signal is sent to the control system, the control system controls the plurality of third electromagnets 1003 to be powered off, the plurality of fourth electromagnets 1004 are powered on, the first contact 14 and the plug 7 are pushed forward by the tension of the spring in the spring telescopic rod assembly 15, the plurality of second permanent magnets 1001 are attracted by the plurality of fourth electromagnets 1004, the first contact 14 and the second contact 6 are separated, and overcharging is prevented. Figure 1 , 2The sealing structure 9 includes a first rubber pad 901, the first rubber pad 901 is sleeved on the rear end face of the charging head 3 outside the plug 7, two storage grooves 902 are formed on the front end face edges of the two charging bases 2, the first electromagnet 903 is fixedly connected to the inner wall of each storage groove 902, the second rubber pad 904 is fixedly connected to the inner side wall of the first electromagnet 903, the first permanent magnet 905 is fixedly connected to the rear end face of the first rubber pad 901, the third rubber pad 906 is fixedly sleeved to the rear side wall of the first permanent magnet 905, the third rubber pad 906 is slidably connected to the inner side of the second rubber pad 904, the third rubber pad 906 is inserted into the inner side of the second rubber pad 904, and the control system controls the first electromagnet 903 to generate magnetism, the first electromagnet 903 adsorbs the first permanent magnet 905 to the rear end, the second rubber pad 904 and the third rubber pad 906 are extruded, the pre-tightening force is improved, the sealing property is improved, dust and water vapor in the outside are prevented from entering the inside of the charging base 2 during the charging process, and the electronic equipment in the inside of the charging base 2 is prevented from being affected.

[0041] The vertical plate 11 is fixedly connected to the rear end of the charging base 2, the spring telescopic rod assembly 15 is fixedly connected to the front end face center of the vertical plate 11, the current inductor 4 is fixedly connected to the front end face of the spring telescopic rod assembly 15, the helical line 5 is sleeved to the outer side of the current inductor 4, the first contact 14 is fixedly connected to the output end of the helical line 5, the fixed plate 13 is fixedly connected to the inside of the charging base 2 in front of the helical line 5, the sleeve 12 is fixedly connected to the front end face of the fixed plate 13, the plug 7 is inserted into the inside of the charging base 2, the second contact 6 is inserted into the sleeve 12, and the first contact 14 is connected to the second contact 6.

[0042] The spring telescopic rod assembly 15 is provided with a spring outside the telescopic rod, the spring in the spring telescopic rod assembly 15 is extruded, the telescopic rod is contracted, the first contact 14 is moved backward, the first contact 14 and the plug 7 are pushed out forward by the tension of the spring, and the first contact 14 and the second contact 6 are separated.

[0043] The connection line 16 is fixedly connected to the output end of the helical line 5, and the electric energy is transmitted to the storage battery of the new energy automobile through the connection line 16.

[0044] The front end surface of the two first contacts 14 is arranged in a rectangle and penetrates through the sliding connection of the four supporting rods 17. The front end of the four supporting rods 17 is fixedly connected with the check ring 19. The front end surface of the first contact 14 is fixedly connected with the contact sensor 18 at the upper center. The rear end surface of the plug 7 is attached to the contact sensor 18. The contact sensor 18 transmits the pulse signal to the control system.

[0045] Embodiment two:

[0046] The difference between this embodiment and embodiment one is that, during the charging process, the temperature sensor inside the charging base 2 detects the temperature inside the charging base 2. When the temperature is too high, the cooling fan 806 is started. The cooling fan 806 draws out the air inside the cavity 807, so that the negative pressure is generated inside the cavity 807. The air is sucked in through the air inlet hole 808, so that the air enters the cavity 807 through the first dustproof net 804. The heat inside the charging base 2 is transmitted to the three heat dissipation fins 803 through the heat absorbing base material 801. The heat on the three heat dissipation fins 803 is blown out through the flowing air, so as to prevent overheating during the charging process and affect the use of the equipment.

[0047] Working principle: when in use, the charging head 3 is taken out from the charging pile. The charging port cover is opened. The plug 7 and the second contact 6 are inserted into the charging base 2. The second contact 6 is attached to the front end surface of the first contact 14 after penetrating through the sleeve 12 to charge. During the insertion process, the rear end surface of the plug 7 is attached to the contact sensor 18. The contact sensor 18 transmits the pulse signal to the control system. At this time, the spring in the extrusion spring telescopic rod assembly 15 is compressed, so that the telescopic rod is retracted, thereby moving the first contact 14 backward. At this time, the control multiple third electromagnets 1003 are started, so that the multiple third electromagnets 1003 magnetically attract the multiple second permanent magnets 1001, preventing the plug 7 from falling off.

[0048] At this time, the third rubber pad 906 on the outer side wall of the first permanent magnet 905 is inserted into the inner side of the second rubber pad 904. At the same time, the control system controls the first electromagnet 903 to generate magnetism by electrification. The first electromagnet 903 attracts the first permanent magnet 905 to the rear end, so that the second rubber pad 904 and the third rubber pad 906 are pressed against each other, thereby improving the pre-tightening force and the sealing performance, preventing dust and water vapor from the outside from entering the charging base 2 during the charging process, and affecting the electronic equipment inside the charging base 2.

[0049] When the current sensor 4 detects the current on the spiral line 5, based on the Hall effect and closed loop magnetic balance, high precision detection is realized through dynamic compensation current. When the spiral line 5 is electrified, a magnetic field is generated around it, and the strength is proportional to the current. The Hall element is placed in the magnetic field to generate a Hall voltage. When the current of the spiral line 5 decreases, the compensation current decreases proportionally at the same time. This is a common technical solution in existing current monitoring technology, which will not be described in detail here.

[0050] When the current is reduced, a pulse signal is sent to the control system, the control system controls the plurality of third electromagnets 1003 to be powered off, the plurality of fourth electromagnets 1004 to be powered on, the first contact 14 and the plug 7 are pushed forward by the tension of the spring on the spring telescopic rod assembly 15, the plurality of second permanent magnets 1001 are attracted by the plurality of fourth electromagnets 1004, so that the first contact 14 and the second contact 6 are separated, thereby preventing overcharging.

[0051] During the charging process, the temperature inside the charging base 2 is detected by the temperature sensor inside the charging base 2, when the temperature is too high, the cooling fan 806 is started, the cooling fan 806 exhausts the air inside the cavity 807, so that the cavity 807 generates negative pressure, through the air inlet hole 808, the air is sucked into the cavity 807, and the heat inside the charging base 2 is transferred to the three heat dissipation fins 803 through the heat absorbing base material 801, and the heat on the three heat dissipation fins 803 is blown out through the flowing air, thereby preventing overheating during the charging process and affecting the use of the equipment.

[0052] After use, the charging head 3 and the plug 7 are pulled out, the charging port cover is covered, and the charging head 3 and the plug 7 are placed in the charging pile to complete the charging.

[0053] The device also includes a control system, which realizes the start and control of the device through human-computer interaction interface and electrical control system, input signal processing converts the instructions of the operator into electrical signals, and output signal transmission transmits the control signals to each executing mechanism to realize the control of the above-mentioned device, which belongs to the commonly used technical scheme in the existing control system, and will not be described in detail here.

[0054] Although the embodiments of the present application have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to the embodiments without departing from the principles and spirits of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A new energy vehicle charging anti-overcharging mechanism, comprising a shell (1), characterized in that: The inside of the shell (1) is transversely arranged with a charging seat (2), wherein one of the charging seat (2) is provided with a charging head (3) at the front end, the rear end face of the charging head (3) is fixedly connected with the plug (7), and the outer side wall of the plug (7) is provided with a falling structure (10) at the rear. The falling structure (10) includes a plurality of second permanent magnets (1001), a plurality of second permanent magnets (1001) are arranged on the two side walls of the plug (7) at the rear, and a plurality of second permanent magnets (1001) are arranged in the upper and lower sides, the inside of the two charging seats (2) on the outer side of the plurality of second permanent magnets (1001) is provided with an arc plate (1002) on the two sides, four arc plates (1002) are arranged on the one side wall of the four arc plates (1002) at the rear of the center, and a plurality of third electromagnets (1003) are arranged in the upper and lower sides, a fourth electromagnet (1004) is fixedly connected to the one side wall of the four arc plates (1002) in front of the plurality of third electromagnets (1003). Two charging seats (2) are provided with cooling structure (8) at the center of the inner wall, two charging seats (2) are provided with sealing structure (9) at the center of the front end face, and the rear end face of the plug (7) is fixedly connected with the second contact (6).

2. The overcharging prevention mechanism for new energy vehicles according to claim 1, characterized in that: Take one of the cooling structure (8) as an example, the cooling structure (8) includes a cavity (807), the inside of the cavity (807) is fixedly connected with a heat absorbing base material (801) at the lower side, the front inner wall of the cavity (807) is provided with an air inlet hole (808) and an air outlet hole (809) at the upper end of the heat absorbing base material (801), five partition plates (802) are arranged transversely on the upper end face of the heat absorbing base material (801), two partition plates (802) on the two sides and the partition plate (802) at the center are fixedly connected to the rear inner wall of the cavity (807), the front end of two partition plates (802) between three partition plates (802) at the rear is fixedly connected to the front inner wall of the cavity (807), three heat dissipation fins (803) are arranged between five partition plates (802), and the air outlet hole (809) is fixedly connected with a heat dissipation fan (806).

3. The overcharging prevention mechanism for new energy vehicles according to claim 2, characterized in that: The first dustproof net (804) is fixedly connected in the air inlet hole (808), and the second dustproof net (805) is fixedly connected in the air outlet hole (809).

4. The overcharging prevention mechanism for new energy vehicles according to claim 1, characterized in that: The sealing structure (9) includes a first rubber pad (901), the first rubber pad (901) is sleeved on the rear end face of the plug (7) outside the charging head (3), two storage grooves (902) are formed in the front end face of the two charging seats (2) at the edge, two first electromagnets (903) are fixedly connected to the inner wall of the two storage grooves (902), two second rubber pads (904) are fixedly connected to the inner side wall of the two first electromagnets (903), a first permanent magnet (905) is fixedly connected to the rear end face of the first rubber pad (901), a third rubber pad (906) is fixedly sleeved on the rear side wall of the first permanent magnet (905), and the third rubber pad (906) is slidingly connected to the inner side of the two second rubber pads (904).

5. The overcharging prevention mechanism for new energy vehicles according to claim 1, characterized in that: Two said charging base (2) inside rear are fixedly connected with vertical plate (11), two said vertical plate (11) front end surface center are fixedly connected with spring telescopic rod assembly (15), two said spring telescopic rod assembly (15) front end surface are fixedly connected with current sensor (4), two said current sensor (4) outside are all equipped with helical line (5), two said helical line (5) output end are all fixedly connected with first contact (14), two said first contact (14) are fixedly connected on the front end surface of two current sensor (4) respectively, the inside of two said helical line (5) front end two charging base (2) are fixedly connected with fixed plate (13), two said fixed plate (13) front end surface are all fixedly connected with sleeve (12).

6. The overcharging prevention mechanism for new energy vehicles according to claim 5, characterized in that: The spring telescopic rod assembly (15) is a combination of springs outside the telescopic rod.

7. The overcharging prevention mechanism for new energy vehicles according to claim 5, characterized in that: Two said helical line (5) output end are all fixedly connected with connecting line (16).

8. The overcharging prevention mechanism for new energy vehicles according to claim 5, characterized in that: Two said first contact (14) front end surface is rectangularly arranged and is penetrated and slidably connected with four supporting rods (17), four said supporting rods (17) front end are fixedly connected with check ring (19), the front end surface center of the first contact (4) is fixedly connected with contact sensor (18).

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