A telescopic charging cable for new energy vehicles and a charging device

Abstract

The application relates to the technical field of new energy charging equipment, and discloses a telescopic charging cable for new energy vehicles and charging equipment, which comprises a charging pile and further comprises: a cable winding device fixed to the side of the charging pile; a charging cable wound on the cable winding device, one end of the charging cable being connected with the charging pile; a charging gun connected with the other end of the charging cable; a temperature sensor installed in the charging gun; a first connecting barrel fixed to the charging gun; and a second connecting barrel fixed to the end of the charging cable away from the charging pile. The application effectively prevents the charging gun from causing fire and other safety hazards due to overheating, the automatic power-off function avoids continuous high-temperature work of the charging gun, reduces the risk of damage of the equipment due to overheating, and avoids fire accidents.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of new energy charging equipment, and particularly relates to a telescopic charging cable for new energy vehicles and charging equipment. BACKGROUND

[0002] New energy vehicle charging equipment is a crucial component in the electric vehicle ecosystem, enabling electric vehicles to charge by transferring electrical energy from the power grid to the vehicle's battery. As global concerns about reducing carbon emissions and environmental sustainability increase, new energy vehicles, particularly electric vehicles, have become an important direction for the development of the automotive industry. Therefore, the development and popularization of charging equipment are crucial for promoting the widespread adoption of electric vehicles.

[0003] According to the search, the Chinese patent with the publication number CN216957496U discloses a telescopic charging cable for new energy vehicles, which includes a storage box, a hollow shaft is rotatably connected inside the storage box, a circular partition is rotatably connected outside the hollow shaft, the circular partition is fixedly connected with the inner wall of the storage box, two staggered through holes are provided on the side wall of the hollow shaft, and the same cable is fixedly connected through the two through holes, the cable is wound around the hollow shaft on both sides of the circular partition, the above-mentioned scheme sets the cable wound in the storage box, connects the cable with the hollow shaft, uses the rotation of the hollow shaft to make the cable have telescopic performance, at the same time, sets the vortex spring to make the cable automatically retract into the storage box, in addition, by adding the anti-tension center line, the shielding layer made of longitudinal aluminum foil and copper wire, the design of fine twisted oxygen-free copper wire and insulation strip in the cable, the extension and heat dissipation of the cable are enhanced, and personnel electric shock can be prevented, but the above-mentioned scheme still has the following shortcomings in actual use:

[0004] During the charging process of the charging gun to the electric vehicle, the high temperature in summer directly leads to the increase of the working environment temperature of the charging equipment, when the temperature exceeds a certain threshold, the heat dissipation capacity of the charging gun and the battery may decrease, leading to overheating of the equipment and increasing the risk of fire, in addition, the chemical activity of the battery is higher in high temperature environment, if the battery itself has defects or is aging, internal short circuit may occur, further causing fire, therefore, the charging gun catches fire in summer, the charging equipment proposed in the above-mentioned scheme does not have the function of automatic power-off when catching fire, which limits the safety performance of the charging gun and the charging cable.

[0005] Therefore, it is necessary to design a telescopic charging cable for new energy vehicles and charging equipment to solve the above-mentioned problems. SUMMARY

[0006] The present application aims to solve the shortcomings in the prior art and provides a telescopic charging cable for new energy vehicles and charging equipment.

[0007] To achieve the above object, the present application adopts the following technical solutions:

[0008] A telescopic charging device for new energy vehicles, comprising a charging pile, further comprising:

[0009] A cable winding device fixed to the side of the charging pile;

[0010] A charging cable wound on the cable winding device, one end of which is connected to the charging pile;

[0011] A charging gun connected to the other end of the charging cable;

[0012] A temperature sensor installed inside the charging gun;

[0013] A first connecting cylinder fixed to the charging gun;

[0014] A second connecting cylinder fixed to the end of the charging cable away from the charging pile;

[0015] A fixing assembly provided on the first connecting cylinder and the second connecting cylinder;

[0016] An execution assembly provided on the first connecting cylinder;

[0017] A separation assembly provided on the first connecting cylinder and the second connecting cylinder;

[0018] A first conductive block fixed to the first connecting cylinder;

[0019] A second conductive block fixed to the second connecting cylinder.

[0020] As a preferred technical solution of the present application, the fixing assembly comprises:

[0021] Two elastic plates, one end of each of the two elastic plates is fixed to the inner surface of the second connecting cylinder, and the other end of each of the two elastic plates extends to the outside of the second connecting cylinder;

[0022] Two clamping blocks, one end of each of the two clamping blocks is fixed to the end of the two elastic plates outside the second connecting cylinder, and an inclined surface is provided on each of the two clamping blocks;

[0023] Two clamping holes, each of the two clamping holes is provided on the first connecting cylinder.

[0024] As a preferred technical solution of the present application, the execution assembly comprises:

[0025] An electromagnet installed inside the first connecting cylinder;

[0026] A magnetic slider is arranged inside the first connecting cylinder through a sliding structure, the magnetic slider is made of magnetic material, and the magnetic slider is opposite to the electromagnet;

[0027] Two connecting plates, one end of the two connecting plates is fixed on the magnetic slider;

[0028] Two extrusion plates, the other end of the two connecting plates is fixed on the two extrusion plates;

[0029] Two slides, the two slides are arranged on the first connecting cylinder, and the two slides are communicated with the two sockets, the two extrusion plates extend into the two slides, and the two extrusion plates are slidably connected in the two slides;

[0030] A first sliding ring is slidably arranged on the first connecting cylinder, and the two extrusion plates are fixed on the inner ring of the first sliding ring.

[0031] As a preferred technical scheme of the present application, the sliding structure comprises:

[0032] A first fixed plate is fixed on the inner surface of the first connecting cylinder;

[0033] A second fixed plate is fixed on the inner surface of the first connecting cylinder;

[0034] A guide rod is fixed between the first fixed plate and the second fixed plate, the guide rod passes through the magnetic slider and is slidably connected with the magnetic slider;

[0035] A first spring is connected between the first fixed plate and the magnetic slider.

[0036] As a preferred technical scheme of the present application, the separation assembly comprises:

[0037] A first fixed ring is fixedly arranged on the first connecting cylinder;

[0038] Two connecting rods are fixed on the first fixed ring;

[0039] Two openings are arranged on the first sliding ring, and the two connecting rods pass through the two openings;

[0040] A second fixed ring is fixedly arranged on the second connecting cylinder;

[0041] A second sliding ring is slidably arranged on the second connecting cylinder;

[0042] Second spring, one end of the second spring is connected with the second fixed ring, and the other end is connected with the second sliding ring.

[0043] As a preferred technical scheme of the present application, a slot is formed on the first conductive block, and an insertion block is fixed on the second conductive block, and the shape of the slot is matched with the shape of the insertion block.

[0044] As a preferred technical scheme of the present application, the cable winding device comprises a fixing frame, a winding wheel and a motor, the fixing frame is fixed on the charging pile, the winding wheel is rotatably installed on the fixing frame, the motor is installed on the fixing frame, and the output shaft of the motor is connected with the winding wheel, and the charging cable is wound on the winding wheel.

[0045] As a preferred technical scheme of the present application, the temperature sensor is electrically connected with the electromagnet.

[0046] As a preferred technical scheme of the present application, the inner ring of the second sliding ring is matched with the outer surface of the second connecting barrel.

[0047] A charging cable for new energy vehicles, comprising:

[0048] An armored sheath;

[0049] A fireproof layer, which is arranged inside the armored sheath;

[0050] An insulation layer, which is arranged inside the armored sheath, and the fireproof layer is arranged between the armored sheath and the insulation layer;

[0051] A corrosion-resistant layer, which is arranged inside the insulation layer;

[0052] A plurality of inner sheaths, each of which is arranged inside the insulation layer, and the corrosion-resistant layer is arranged between the insulation layer and the plurality of inner sheaths;

[0053] A plurality of conductive cores, each of which is arranged inside the plurality of inner sheaths.

[0054] The present application has the following advantages:

[0055] 1. The temperature sensor monitors the temperature of the charging gun in real time, and once the temperature exceeds the preset value, the power-off mechanism is automatically triggered, effectively preventing the charging gun from causing fire and other safety hazards due to overheating, and the automatic power-off function avoids the continuous high-temperature work of the charging gun, reduces the risk of equipment damage due to overheating, and avoids fire accidents;

[0056] 2、The design of the elastic plate enables the two clamping blocks to move quickly when being pressed, and to be clamped into the two clamping holes respectively under the elastic force of the elastic plate, so as to realize the quick connection between the first connecting cylinder and the second connecting cylinder, improve the efficiency and convenience of the connection, and provide support for realizing the automatic pop-up separation between the charging gun and the charging cable;

[0057] 3、The automatic winding device can effectively avoid the charging cable from scattering on the ground, prevent it from being crushed by vehicles or stepped on by people, protect the charging cable from external damage, prolong its service life, reduce the cost of maintenance and replacement, avoid the safety hazards caused by the scattered charging cable on the ground, such as tripping and fire, ensure the safety of the charging process, and reduce the risk of accidental accidents. BRIEF DESCRIPTION OF DRAWINGS

[0058] Figure 1 A structure diagram of a telescopic charging device for new energy vehicles is provided.

[0059] Figure 2 A structure diagram of a cable winding device, a charging cable and a charging gun is provided.

[0060] Figure 3 A sectional structure diagram of a charging gun is provided.

[0061] Figure 4 An exploded structure diagram of a charging gun and a charging cable is provided.

[0062] Figure 5 A sectional structure diagram of a first connecting cylinder and a second connecting cylinder is provided.

[0063] Figure 6 A sectional structure diagram of a first connecting cylinder and a second connecting cylinder is provided. Figure 4

[0064] Figure 7 A sectional structure diagram of a first connecting cylinder and a second connecting cylinder is provided. Figure 4

[0065] Figure 8 A sectional structure diagram of a first connecting cylinder and a second connecting cylinder is provided. Figure 5

[0066] Figure 9 A structure diagram of a charging cable for new energy vehicles is provided.

[0067] ​​​In the figure: 1 charging pile, 2 cable winding device, 3 charging cable, 301 armored sheath, 302 fireproof layer, 303 insulation layer, 304 corrosion-resistant layer, 305 inner sheath, 306 conductive core, 4 charging gun, 5 temperature sensor, 6 first connecting barrel, 7 second connecting barrel, 81 elastic plate, 82 clamping block, 83 clamping hole, 91 electromagnet, 92 magnetic sliding block, 93 connecting plate, 94 extrusion plate, 95 slide, 96 first sliding ring, 101 first fixed plate, 102 second fixed plate, 103 guide rod, 104 first spring, 111 first fixed ring, 112 connecting rod, 113 opening, 114 second fixed ring, 115 second sliding ring, 116 second spring, 12 first conductive block, 13 second conductive block. DETAILED DESCRIPTION

[0068] The technical solutions in the embodiments of the present application will be clearly and completely described 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, not all.

[0069] Reference Figures 1-9The utility model provides a scalable new energy vehicle charging equipment, including charging pile 1, still includes: cable winding equipment 2, cable winding equipment 2 is fixed in the side of charging pile 1, cable winding equipment 2 includes fixed frame, winding wheel and motor, fixed frame is fixed on charging pile 1, winding wheel is rotatably installed on fixed frame, motor is installed on fixed frame, and the output shaft of motor is connected with winding wheel, charging cable 3 is wound on winding wheel, when the user activates charging gun 4 through the payment such as recharging, motor can be energized and run, and drives winding wheel to rotate, when winding wheel rotates, can make charging cable 3 from winding wheel and extend, this is convenient for staff to insert charging gun 4 on the charging port of vehicle, when charging ends and the user pulls out charging gun 4, motor can reverse operation, and drives winding wheel to reverse rotation, when winding wheel reverses, can wind charging cable 3, therefore, cable winding equipment 2 makes charging cable 3 can be stored when not being used, avoids that charging cable 3 scatters on the ground, charging cable 3, charging cable 3 is wound on cable winding equipment 2, and one end of charging cable 3 is connected with charging pile 1, charging gun 4, charging gun 4 is connected with the other end of charging cable 3, temperature sensor 5, temperature sensor 5 is installed in the inside of charging gun 4, first connecting barrel 6, first connecting barrel 6 is fixed on charging gun 4, second connecting barrel 7, second connecting barrel 7 is fixed on the one end of charging cable 3 away from charging pile 1, first conductive block 12, first conductive block 12 is fixed on first connecting barrel 6, second conductive block 13, second conductive block 13 is fixed on second connecting barrel 7, the slot is set up on first conductive block 12, the insert block is fixed on second conductive block 13, the shape of slot is compatible with the shape of insert block, when first conductive block 12 is connected together with second conductive block 13, insert block just inserts into slot, this design can guarantee the power supply effect of first conductive block 12 and second conductive block 13.

[0070] The device further comprises a fixing assembly arranged on the first connecting barrel 6 and the second connecting barrel 7, and the fixing assembly comprises two elastic plates 81, one end of each of the two elastic plates 81 is fixed to the inner face of the second connecting barrel 7, and the other end of each of the two elastic plates 81 extends to the outside of the second connecting barrel 7; two clamping blocks 82, one end of each of the two clamping blocks 82 is fixed to the outside of the second connecting barrel 7, and each of the two clamping blocks 82 is provided with an inclined face; and two clamping holes 83, each of the two clamping holes 83 is arranged on the first connecting barrel 6, and the elastic plate 81 is made of a material with elasticity, when the clamping block 82 is extruded to move, the elastic plate 81 is bent and deformed, the deformability of the elastic plate 81 is used to support the movement of the two clamping blocks 82, in addition, under the elastic force of the two elastic plates 81, the two clamping blocks 82 always have a tendency to move away from each other, when the two clamping blocks 82 are respectively opposite to the two clamping holes 83 when the staff connects the first connecting barrel 6 and the second connecting barrel 7, the two clamping blocks 82 can be clamped into the two clamping holes 83 respectively under the elastic force of the two elastic plates 81, and this design facilitates the quick connection between the first connecting barrel 6 and the second connecting barrel 7.

[0071] The device further comprises an execution assembly arranged on the first connecting barrel 6. The execution assembly comprises: an electromagnet 91 arranged inside the first connecting barrel 6, and electrically connected between the temperature sensor 5 and the electromagnet 91; a magnetic slider 92 arranged inside the first connecting barrel 6 through a sliding structure. The sliding structure comprises: a first fixed plate 101 fixed to the inner surface of the first connecting barrel 6; a second fixed plate 102 fixed to the inner surface of the first connecting barrel 6; a guide rod 103 fixed between the first fixed plate 101 and the second fixed plate 102, penetrating through the magnetic slider 92 and being in sliding connection with the magnetic slider 92; a first spring 104, one end of which is connected with the first fixed plate 101 and the other end of which is connected with the magnetic slider 92. The magnetic slider 92 is made of magnetic material and is arranged opposite to the electromagnet 91; two connecting plates 93, one end of each of which is fixed to the magnetic slider 92; two extrusion plates 94, each of which is fixed to the other end of each of the two connecting plates 93; two sliding grooves 95 each of which is formed in the first connecting barrel 6 and in communication with each of the two clamping openings 83. The two extrusion plates 94 extend into the two sliding grooves 95 respectively and are in sliding connection in the two sliding grooves 95 respectively; and a first sliding ring 96 slidingly sleeved on the first connecting barrel 6. The two extrusion plates 94 are fixed to the inner ring of the first sliding ring 96. The design of the execution assembly realizes the separation of the charging cable 3 and the charging gun 4. After the charging cable 3 and the charging gun 4 are separated, the charging cable 3 no longer supplies power to the charging gun 4, realizing the function of automatic power-off. The power-off action can prevent the temperature of the charging gun 4 from continuously rising and prevent the charging gun 4 from catching fire.

[0072] The device further comprises a separation assembly arranged on the first connecting barrel 6 and the second connecting barrel 7. The separation assembly comprises: a first fixed ring 111 fixedly sleeved on the first connecting barrel 6; two connecting rods 112 each fixed to the first fixed ring 111; two openings 113 each formed in the first sliding ring 96, and the two connecting rods 112 penetrating through the two openings 113 respectively; a second fixed ring 114 fixedly sleeved on the second connecting barrel 7; a second sliding ring 115 slidingly sleeved on the second connecting barrel 7, and the inner ring of the second sliding ring 115 being in close contact with the outer surface of the second connecting barrel 7; and a second spring 116, one end of which is connected with the second fixed ring 114 and the other end of which is connected with the second sliding ring 115.

[0073] Referring to Figure 9The utility model provides a new energy vehicle charging cable, including: armored sheath 301;Fireproof layer 302, fireproof layer 302 is arranged in the inside of armored sheath 301;Insulating layer 303, insulating layer 303 is arranged in the inside of armored sheath 301, and fireproof layer 302 is arranged between armored sheath 301 and insulating layer 303;Corrosion resistance layer 304, corrosion resistance layer 304 is arranged in the inside of insulating layer 303;Several inner sheaths 305, several inner sheaths 305 are all arranged in the inside of insulating layer 303, and corrosion resistance layer 304 is arranged between insulating layer 303 and several inner sheaths 305;Several conductive cores 306, several conductive cores 306 are arranged in the inside of several inner sheaths 305 respectively, armored sheath 301 main effect is to provide the overall protection of cable, resists the mechanical damage of outside, chemical substance erosion and prevents moisture, rainwater etc. from entering the inside of cable, armored sheath 301 usually adopts the material with good weather resistance, such as polyvinyl chloride, crosslinked polyethylene, polychloroprene etc., can resist ultraviolet, high temperature, low temperature etc. Environmental influence, fireproof layer 302 is used for preventing fire spread and protecting the internal structure of cable, plays the role of fireproof isolation when fire occurs, fireproof layer 302 usually adopts the special material with high temperature resistance, such as fire -resistant polymer or the material containing fire -retardant additive, can slow down the spread of fire under the condition of fire, insulating layer 303 is used for forming electrical isolation in the inside of cable, prevents the short circuit of electric current between different conductors, provides electrical safety protection, corrosion resistance layer 304 is used for filling the inside space of cable, fixes the position of conductor, reduces the gap between conductor, enhances the structural stability of cable, and corrosion resistance layer 304 can also play the role of fireproof isolation, prevents flame and heat conduction to the inside of cable.

[0074] The specific working principle of the present application is as follows:

[0075] In the initial state, the charging cable 3 is connected with the charging gun 4 through the first connecting barrel 6 and the second connecting barrel 7, the two clamping blocks 82 are clamped in the two clamping openings 83 respectively, the two clamping blocks 82 and the two clamping openings 83 fix the first connecting barrel 6 and the second connecting barrel 7, in addition, under the action of the first spring 104, the magnetic sliding block 92 is located away from the electromagnet 91, at this time, the two pressing plates 94 do not contact the two clamping blocks 82, secondly, when the first connecting barrel 6 and the second connecting barrel 7 are connected together, the two connecting rods 112 abut against the second sliding ring 115, so that the second sliding ring 115 extrudes the second spring 116, so that the second spring 116 is in a compressed state, further, the first connecting barrel 6 is provided with the first conductive block 12, and the second connecting barrel 7 is provided with the second conductive block 13, when the first connecting barrel 6 and the second connecting barrel 7 are connected together, the first conductive block 12 and the second conductive block 13 contact each other, at this time, the charging cable 3 can supply power to the charging gun 4, the first conductive block 12 is provided with a slot, and the second conductive block 13 is fixedly provided with an insertion block, when the first conductive block 12 and the second conductive block 13 are connected together, the insertion block is inserted into the slot, and the design can guarantee the power supply effect of the first conductive block 12 and the second conductive block 13.

[0076] In the process of using the charging gun 4, the temperature sensor 5 in the charging gun 4 monitors the temperature of the charging gun 4 in real time, when the temperature of the charging gun 4 rises to the preset temperature value of the temperature sensor 5, the temperature sensor 5 sends a control signal to the electromagnet 91, so that the electromagnet 91 is electrified and generates magnetism, when the electromagnet 91 generates magnetism, the electromagnet 91 can attract the magnetic sliding block 92, so that the magnetic sliding block 92 moves towards the electromagnet 91 under the attraction of the magnetic force, the magnetic sliding block 92 can drive the two connecting plates 93 to move, the two connecting plates 93 can drive the two pressing plates 94 to move when moving, so that the two pressing plates 94 extrude the inclined surfaces of the two clamping blocks 82 respectively, when the two clamping blocks 82 are extruded, under the action of the inclined surfaces, the two clamping blocks 82 can move and approach each other, until the two clamping blocks 82 are separated from the two clamping openings 83 respectively, when the two clamping blocks 82 are separated from the two clamping openings 83 respectively, the two clamping blocks 82 no longer fix the first connecting barrel 6 and the second connecting barrel 7, at this time, the second sliding ring 115 slides on the second connecting barrel 7 under the elastic force of the second spring 116, the second sliding ring 115 can push the two connecting rods 112 when sliding, so that the first connecting barrel 6 and the second connecting barrel 7 are separated, so as to realize the separation between the charging cable 3 and the charging gun 4, after the charging cable 3 and the charging gun 4 are separated, the charging cable 3 no longer supplies power to the charging gun 4, realizing the function of automatic power-off, the power-off action can avoid the continuous rise of the temperature of the charging gun 4, and avoid the fire of the charging gun 4.

[0077] It is worth mentioning that the elastic plate 81 is made of a material with elasticity, and when the clamping block 82 is extruded and moves, the elastic plate 81 will be bent and deformed, and the deformability of the elastic plate 81 is used to support the movement of the two clamping blocks 82, in addition, under the elastic force of the two elastic plates 81, the two clamping blocks 82 always have a tendency to move away from each other, when the two clamping blocks 82 are respectively opposite to the two clamping blocks 83, the two clamping blocks 82 can be respectively clamped into the two clamping blocks 83 under the elastic force of the two elastic plates 81, which facilitates the quick connection between the first connecting barrel 6 and the second connecting barrel 7, in addition, the specific control mode of the temperature sensor 5 to the electromagnet 91 is not the innovative part of the present application, and is not shown in the figure, and will not be described in detail here.

[0078] The charging pile 1 is also provided with a cable winding device 2, which is used for automatically winding and releasing the charging cable 3, specifically, when the user activates the charging gun 4 through payment and other ways, the motor is powered on and operates, and drives the winding wheel to rotate, and when the winding wheel rotates, the charging cable 3 can be unwound from the winding wheel, which facilitates the staff to insert the charging gun 4 into the charging port of the vehicle, and when the charging is completed and the user pulls out the charging gun 4, the motor reverses and drives the winding wheel to rotate in the opposite direction, and when the winding wheel reverses, the charging cable 3 can be wound, therefore, the cable winding device 2 can make the charging cable 3 be stored when not in use, avoid the charging cable 3 scattered on the ground, prevent the vehicle from rolling over the scattered charging cable 3 on the ground, and protect the charging cable 3.

[0079] The charging cable provided by the application comprises an armored sheath 301, a fireproof layer 302, an insulation layer 303, an anticorrosion layer 304, a plurality of inner sheaths 305 and a plurality of conductive cores 306, the armored sheath 301 mainly provides overall protection for the cable, resists mechanical damage, chemical substance corrosion and prevents water, rain and the like from entering the inside of the cable, the armored sheath 301 is usually made of materials with good weather resistance, such as polyvinyl chloride, cross-linked polyethylene, polychloroprene and the like, and can resist the influence of ultraviolet rays, high temperature, low temperature and the like, the fireproof layer 302 is used for preventing fire spreading and protecting the internal structure of the cable, and plays a role in fireproof isolation in the case of fire, the fireproof layer 302 is usually made of special materials with high temperature resistance, such as fire-resistant polymers or materials containing fireproof additives, and can slow down the spread of fire in the case of fire, the insulation layer 303 is used for forming electrical isolation in the cable, preventing short circuit between different conductors, providing electrical safety protection, the anticorrosion layer 304 is used for filling the internal space of the cable, fixing the position of the conductor, reducing the gap between the conductors and enhancing the structural stability of the cable, and the anticorrosion layer 304 can also play a role in fireproof isolation, preventing flame and heat conduction into the inside of the cable.

[0080] The above merely describes preferred specific embodiments of the present application, but the protection scope of the present application is not limited thereto, and any person skilled in the art, according to the technical solution and inventive concept of the present application, makes equivalent replacement or change within the technical range disclosed by the present application, which should be covered within the protection scope of the present application.

Claims

1. A scalable charging device for new energy vehicles, comprising a charging pile (1), characterized in that, Also include: Cable winding device (2), the cable winding device (2) is fixed on the side of charging pile (1); Charging cable (3), the charging cable (3) is wound on the cable winding device (2), and one end of the charging cable (3) is connected with the charging pile (1); Charging gun (4), the charging gun (4) is connected with the other end of the charging cable (3); Temperature sensor (5), the temperature sensor (5) is installed in the inside of the charging gun (4); First connecting barrel (6), the first connecting barrel (6) is fixed on the charging gun (4); Second connecting barrel (7), the second connecting barrel (7) is fixed on the end of the charging cable (3) away from the charging pile (1); Fixing assembly, the fixing assembly is arranged on the first connecting barrel (6) and the second connecting barrel (7), and the fixing assembly comprises: two elastic plates (81), one end of the two elastic plates (81) is fixed on the inner face of the second connecting barrel (7), and the other end of the two elastic plates (81) extends to the outside of the second connecting barrel (7);Two clamping blocks (82), two clamping blocks (82) are fixed at one end of the two elastic plates (81) outside the second connecting barrel (7), and the two clamping blocks (82) are provided with inclined surfaces respectively;Two clamping blocks (83), two clamping blocks (83) are arranged on the first connecting barrel (6); Execution assembly, the execution assembly is arranged on the first connecting barrel (6), and the execution assembly comprises: an electromagnet (91), the electromagnet (91) is installed in the inside of the first connecting barrel (6);Magnetic slide (92), the magnetic slide (92) is arranged in the inside of the first connecting barrel (6) through sliding structure, the magnetic slide (92) is made of magnetic material, and the magnetic slide (92) is opposite to the electromagnet (91);Two connecting plates (93), one end of the two connecting plates (93) is fixed on the magnetic slide (92);Two extrusion plates (94), two extrusion plates (94) are fixed at the other end of the two connecting plates (93) respectively;Two slides (95), two slides (95) are arranged on the first connecting barrel (6), and two slides (95) are communicated with two clamping blocks (83) respectively, two extrusion plates (94) extend into two slides (95) respectively, and two extrusion plates (94) are slidably connected in two slides (95) respectively;First sliding ring (96), the first sliding ring (96) is slidably sleeved on the first connecting barrel (6), and two extrusion plates (94) are fixed on the inner circle of the first sliding ring (96); Separation assembly, the separation assembly is arranged on the first connecting barrel (6) and the second connecting barrel (7); First conductive block (12), the first conductive block (12) is fixed on the first connecting barrel (6); Second conductive block (13), the second conductive block (13) is fixed on the second connecting barrel (7). 2.The scalable charging device for new energy vehicles of claim 1, wherein, The sliding structure comprises: First fixed plate (101), the first fixed plate (101) is fixed on the inner face of the first connecting barrel (6); A second fixed plate (102) is fixed to the inner face of the first connecting cylinder (6); A guide rod (103) is fixed between the first fixed plate (101) and the second fixed plate (102), and the guide rod (103) penetrates the magnetic slider (92) and is in sliding connection with the magnetic slider (92); A first spring (104) has one end connected to the first fixed plate (101) and the other end connected to the magnetic slider (92). 3.The scalable charging device for new energy vehicles of claim 2, wherein, The separation assembly comprises: A first fixed ring (111) is fixedly sleeved on the first connecting cylinder (6); Two connecting rods (112) are fixed on the first fixed ring (111); Two openings (113) are formed in the first sliding ring (96), and the two connecting rods (112) penetrate the two openings (113) respectively; A second fixed ring (114) is fixedly sleeved on the second connecting cylinder (7); A second sliding ring (115) is slidably sleeved on the second connecting cylinder (7); A second spring (116) has one end connected to the second fixed ring (114) and the other end connected to the second sliding ring (115). 4.The scalable charging device for new energy vehicles of claim 3, wherein, A slot is formed in the first conductive block (12), and an insertion block is fixed on the second conductive block (13), and the shape of the slot is matched with the shape of the insertion block. 5.The scalable charging device for new energy vehicles of claim 4, wherein, The cable winding device (2) comprises a fixing frame, a winding wheel and a motor, the fixing frame is fixed on the charging pile (1), the winding wheel is rotatably installed on the fixing frame, the motor is installed on the fixing frame, and the output shaft of the motor is connected with the winding wheel, and the charging cable (3) is wound on the winding wheel. 6.The scalable charging device for new energy vehicles of claim 5, wherein, The temperature sensor (5) is electrically connected with the electromagnet (91). 7.The scalable charging device for new energy vehicles of claim 6, wherein, The inner ring of the second sliding ring (115) and the outer surface of the second connecting cylinder (7) are matched with each other.

8. A charging cable for a new energy vehicle based on the retractable charging device for a new energy vehicle according to claim 1, characterized in that, It comprises: An armored sheath (301); A fireproof layer (302) is arranged inside the armored sheath (301); An insulating layer (303) is arranged inside the armored sheath (301), and the fireproof layer (302) is arranged between the armored sheath (301) and the insulating layer (303); An anti-corrosion layer (304) is arranged inside the insulating layer (303); A plurality of inner layer sheaths (305) are arranged inside the insulating layer (303), and the anti-corrosion layer (304) is arranged between the insulating layer (303) and the plurality of inner layer sheaths (305); A plurality of conductive cores (306) are arranged inside the plurality of inner layer sheaths (305).

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