New energy automobile charging pile heat dissipation device

Abstract

The invention belongs to the technical field of charging pile cooling, and particularly relates to a new energy automobile charging pile heat dissipation device which comprises a circulating pump, a water tank, a heat dissipation cavity and a charging pile, the water tank is fixedly installed above the circulating pump, a coil pipe is arranged in the heat dissipation cavity, and a motor is fixed to the inner wall of the heat dissipation cavity; fan blades are fixed to the output end of the motor, a blowing aluminum plate is attached to one side of the charging pile, and a heat preservation layer is attached to one side of the blowing aluminum plate. The circulating pump is provided with a water inlet and a water outlet, the inflation aluminum plate is provided with an inlet and an outlet, the water inlet is connected with an input end pipeline of the coil pipe, the inlet is connected with an output end pipeline of the coil pipe, and the outlet is connected with a water outlet pipeline of the circulating pump. The circulating water cannot be replaced, or the temperature of the replaced water is high, so that the cooling effect is reduced.

Description

Technical Field

[0001] The present invention belongs to the technical field of charging pile cooling, and particularly relates to a heat dissipation device for a new energy vehicle charging pile. Background Art

[0002] A charging pile, also known as an electric vehicle charging station or an electric vehicle power supply device, is a device that provides electric energy for an electric vehicle, enabling the electric vehicle to store sufficient electric energy to support its operation. When the charging pile is operating, the temperature of the charging pile rises due to the transmission of current. Therefore, it is necessary to cool the charging pile. Currently, the circulating water cooling method is mostly used for cooling. However, in this cooling process, since the circulating water cannot be effectively cooled, the temperature gradually rises during the water circulation process, resulting in a gradual decrease in the cooling effect at the back. This phenomenon has become an urgent problem to be solved by those skilled in the art. Summary of the Invention

[0003] The purpose of the present invention is to provide a heat dissipation device for a new energy vehicle charging pile to solve the problems raised in the above background art.

[0004] To solve the above technical problems, the present invention provides the following technical solution: A heat dissipation device for a new energy vehicle charging pile includes a circulating pump, a water tank, a heat dissipation chamber, and a charging pile. The water tank is fixedly installed above the circulating pump. A coil pipe is arranged inside the heat dissipation chamber. A motor is fixed to the inner wall of the heat dissipation chamber, and a fan blade is fixed to the output end of the motor. One side of the charging pile is attached to an extruded aluminum plate, and one side of the extruded aluminum plate is attached to a heat insulation layer. The circulating pump is provided with a water inlet and a water outlet. The extruded aluminum plate is provided with an inlet and an outlet. The water inlet is connected to the input end of the coil pipe through a pipeline, the inlet is connected to the output end of the coil pipe through a pipeline, the outlet is connected to the water outlet of the circulating pump through a pipeline, the fan blade is aligned with the coil pipe, a heat dissipation mechanism is arranged inside the water tank, and the inside of the water tank is connected to the circulating pump through a pipeline. An exhaust port is arranged above the water tank. The heat dissipation mechanism includes a motor, an elastic expansion joint, a gear disk, and two groups of strengthening parts. Each of the two groups of strengthening parts includes a slide rail, a toothed plate, and a push-pull plate. The flow channels of the extruded aluminum plate are of three types.

[0005] The present invention further explains that the motor is fixedly installed above the inner wall of the water tank. The gear disk is fixedly connected to the output end of the motor through an elastic expansion joint. The slide rail is fixedly installed on the inner wall of the water tank. The toothed plate is slidably connected to the inner wall of the slide rail and meshes with the gear disk. A hole is arranged in the middle connection of the push-pull plate, and a slide bar is slidably connected in the hole. A limiting block is fixed to the outside of the slide bar and is located below the push-pull plate. The upper end of the slide bar is connected to the bottom of the toothed plate through a bearing.

[0006] The present invention further illustrates that a gear is fixed to the lower end of the sliding rod, a track is fixed to the bottom of the inner wall of the water tank, a rack is arranged on the inner wall of the track, and the rack meshes with the gear; a elastic spring is connected between the limiting block and the bottom of the push-pull plate, and the elastic spring is sleeved on the outer side of the sliding rod.

[0007] The present invention further illustrates that an inclined plate is fixed to the inner wall of the water tank, a chute is arranged in the middle of the inclined plate, the sliding rod penetrates through the chute, and the inclined surface of the inclined plate from outside to inside is in an ascending form.

[0008] The present invention further illustrates that the bottom of the chute is arc-shaped, a sphere is fixed to the upper end of the push-pull plate, and the sphere fits with the arc-shaped part of the chute.

[0009] The present invention further illustrates that a chamber is fixed to the inner wall of the water tank, a hydraulic plate is slidably connected to the inner wall of the chamber, the hydraulic plate is spring-connected to the inner wall of the chamber, and a through hole is opened on the outside of the chamber; the sliding rod is located in the middle of the hydraulic plate, and both of them have magnetism and the magnetic poles are the same.

[0010] The present invention further illustrates that an elastic telescopic rod is fixed to the bottom of the inner wall of the water tank, the upper end of the elastic telescopic rod is spherical, a sleeve is fixed to the bottom of the gear disk, a plurality of arc-shaped blocks are uniformly fixed to the inner wall of the sleeve, and all the arc-shaped blocks are located below the spherical part of the elastic telescopic rod, and after the elastic telescopic rod retracts, the spherical part contacts with the arc-shaped blocks; an air pump is connected by a pipeline between the elastic telescopic rod and the inside of the chamber.

[0011] The present invention further illustrates that a temperature detector is arranged inside the water tank, and the temperature detector is electrically connected to the air pump. A temperature recognition module and an automatic switching module are arranged inside the temperature detector, and the temperature recognition module and the automatic switching module are electrically connected. The temperature recognition module is used to recognize the water temperature in the water tank in real time, and the automatic switching module is used to control the air pump to perform air pressure control on the chamber and the elastic telescopic rod respectively according to the water temperature in the water tank; the thickness of half of the teeth of the gear disk is equal to the thickness of the gear disk, and the thickness of the other half of the teeth is half of the thickness of the gear disk.

[0012] Compared with the prior art, the beneficial effects achieved by the present invention are as follows: For the water tank adopted by the present invention, in order to avoid the continuous increase of the water temperature during the circulation process and thus reduce the cooling effect, after several circulations, the circulating pump injects the water in the circulation process into the water tank through the pipeline again, mixes it with the water in the water tank, and then re-pumps the water to replace the circulating water, so as to always maintain efficient cooling and improve the use effect of the charging pile;

[0013] During the process of replacing the water in the water tank, shaking the water in the water tank from side to side can accelerate the cooling rate of the water. When replacing the water subsequently, the temperature of the water is ensured, preventing the cooling effect from being compromised due to the inability of the temperature to drop rapidly. At the same time, the push-pull plate is driven to rotate to agitate the water. While shaking from side to side, agitation is also carried out, further accelerating the cooling rate of the water to further enhance the cooling effect. When the push-pull plate rotates outward and moves to stir the water, it stirs in a top-down manner, stirring more thoroughly and cooling faster, keeping the water temperature constant at all times and preventing the water temperature from being unable to dissipate heat quickly, which affects the subsequent heat dissipation effect of the charging pile. By the sphere moving and rotating in the chute, setting the bottom of the chute to be arc-shaped can relatively reduce the wear of the sphere. On the one hand, it improves the service life of the structure, and on the other hand, it runs more smoothly, avoiding jamming phenomena;

[0014] In response to the change in the water temperature in the water tank, the elastic telescopic rod and the air pressure inside the hydraulic plate are automatically adjusted, and the intensity of the water surging on the left and right sides in the water tank is adjusted, thereby adjusting the cooling intensity. At the same time, when the toothed disk is in the initial position, all the teeth on its outer side can mesh with the toothed plate, ensuring the cooling intensity and improving the cooling efficiency. That is, it can shake the water and can also shake the water on the right side first and then the water on the left side. Thus, compared with shaking the water on the left and right sides synchronously, the energy consumption of the motor is relatively reduced, and the operating cost is reduced. Brief Description of the Drawings

[0015] The drawings are used to provide a further understanding of the present invention and constitute a part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation to the present invention. In the drawings:

[0016] Figure 1 is the overall structural schematic diagram of the present invention;

[0017] Figure 2 is the schematic diagram of three flow channels of the blown aluminum plate of the present invention;

[0018] Figure 3 is the schematic diagram of the internal structure of the water tank of the present invention;

[0019] Figure 4 is the plan view of the water tank of the present invention;

[0020] Figure 5 is the schematic diagram of the structural positional relationship between the toothed disk and the two reinforcing parts of the present invention;

[0021] Figure 6 is the schematic diagram of the shape of the chute of the present invention;

[0022] Figure 7 is the schematic diagram of the installation relationship between the sliding rod and the push-pull plate of the present invention;

[0023] Figure 8It is a schematic diagram of the internal structure of the chamber of the present invention;

[0024] Figure 9 It is a schematic diagram of the internal structure of the sleeve of the present invention;

[0025] Figure 10 It is a schematic diagram of the positional relationship between the upper end of the elastic telescopic rod and the sleeve of the present invention;

[0026] Figure 11 It is a schematic diagram of the pipeline connection mode of the air pump, the elastic telescopic rod and the chamber of the present invention;

[0027] In the figure: 1. Circulation pump; 2. Water tank; 21. Exhaust port; 22. Motor; 221. Elastic expansion joint; 222. Tooth disc; 223. Sleeve; 224. Arc-shaped block; 23. Slide rail; 231. Tooth plate; 232. Push-pull plate; 233. Slide bar; 234. Limit block; 235. Gear; 24. Track; 25. Elastic spring; 26. Inclined plate; 261. Chute; 262. Sphere; 27. Chamber; 271. Hydraulic chamber; 272. Through hole; 28. Elastic telescopic rod; 3. Heat dissipation chamber; 31. Coiled pipe; 32. Electric motor; 33. Fan blade; 4. Charging pile; 41. Blown aluminum plate; 42. Thermal insulation layer. Specific embodiments

[0028] The technical solution of the present invention will be further described in detail and non-limitingly below in conjunction with the preferred embodiments and their accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0029] Please refer to Figures 1-11 , the present invention provides a technical solution: a heat dissipation device for a new energy vehicle charging pile, including a circulation pump 1, a water tank 2, a heat dissipation chamber 3 and a charging pile 4. The water tank 2 is fixedly installed above the circulation pump 1. A coiled pipe 31 is arranged inside the heat dissipation chamber 3. An electric motor 32 is fixed on the inner wall of the heat dissipation chamber 3. A fan blade 33 is fixed at the output end of the electric motor 32. A blown aluminum plate 41 is attached to one side of the charging pile 4, and a thermal insulation layer 42 is attached to one side of the blown aluminum plate 41;

[0030] The circulation pump 1 is provided with a water inlet and a water outlet. The blown aluminum plate 41 is provided with an inlet and an outlet. The water inlet is connected to the input end of the coil pipe 31 through a pipeline. The inlet is connected to the output end of the coil pipe 31 through a pipeline. The outlet is connected to the water outlet of the circulation pump 1 through a pipeline. The fan blade 33 is aligned with the coil pipe 31. A heat dissipation mechanism is arranged inside the water tank 2. The inside of the water tank 2 is connected to the circulation pump 1 through a pipeline. An exhaust port 21 is arranged above the water tank 2. The heat dissipation mechanism includes a motor 22, an elastic expansion joint 221, a gear disk 222 and two groups of strengthening parts. Both groups of strengthening parts include a slide rail 23, a toothed plate 231 and a push-pull plate 232. The flow channels of the blown aluminum plate 41 are of three types;

[0031] When the charging pile 4 is operating, the circulation pump 1 operates synchronously, extracts water from the water tank 2 through a pipeline, then injects the water into the pipeline through the water inlet, and enters the coil pipe 31 through the pipeline. At the same time, the motor 32 operates to drive the fan blade 33 to rotate, and air-cool the coil pipe 31. The cooled water enters the blown aluminum plate 41 through the inlet and flows in the flow channels of the blown aluminum plate 41, so as to quickly cool the charging pile 4, ensure the operating safety of the charging pile 4, and avoid damage or even combustion due to excessive temperature. After that, the cooled water is pumped into the circulation pump 1 again through the circulation pump 1 and the water outlet, and the above operations are repeated for circulating cooling, always maintaining the operating safety of the charging pile 4. And during the circulating cooling process, in order to avoid the continuous increase of the water temperature during the circulation process, thereby reducing the cooling effect, after several circulations, the circulation pump 1 injects the water in the circulation process into the water tank 2 through a pipeline again, mixes it with the water in the water tank 2, and then extracts water again to replace the circulating water, so as to always maintain efficient cooling and improve the use effect of the charging pile 4.

[0032] The motor 22 is fixedly installed above the inner wall of the water tank 2. The gear disk 222 is fixedly connected to the output end of the motor 22 through the elastic expansion joint 221. The slide rail 23 is fixedly installed on the inner wall of the water tank 2. The toothed plate 231 is slidably connected to the inner wall of the slide rail 23 and meshes with the gear disk 222;

[0033] A hole is arranged in the middle connection of the push-pull plate 232, and a slide rod 233 is slidably connected in the hole. A limiting block 234 is fixed on the outer side of the slide rod 233. The limiting block 234 is located below the push-pull plate 232. The upper end of the slide rod 233 is connected to the bottom of the toothed plate 231 through a bearing;

[0034] During the use of the charging pile 4, the motor 22 operates to drive the gear disk 222 to rotate through the elastic expansion joint 221. The gear disk 222 drives the two toothed plates 231 to slide left and right relative to each other in the slide rail 23 through meshing, so as to drive the push-pull plate 232 to move left and right through the slide rod 233, shake the water in the water tank 2 left and right, which can accelerate the cooling speed of the water. When replacing the water later, it can ensure the temperature of the water and avoid the cooling effect cannot be guaranteed due to the inability to quickly drop the temperature.

[0035] A gear 235 is fixed to the lower end of the sliding rod 233, and a track 24 is fixed to the bottom of the inner wall of the water tank 2. A rack is provided on the inner wall of the track 24 and meshes with the gear 235 through the rack;

[0036] A elastic spring 25 is connected between the limit block 234 and the bottom of the push-pull plate 232, and the elastic spring 25 is sleeved on the outside of the sliding rod 233;

[0037] When the sliding rod 233 drives the push-pull plate 232 to move left and right, the gear 235 at the bottom end of the sliding rod 233 rotates through the bearing by meshing with the rack on the inner wall of the track 24. At the same time, the push-pull plate 232 is firmly fixed on the sliding rod 233 through the limit block 234 and the elastic spring 25. When the sliding rod 233 rotates, it drives the push-pull plate 232 to rotate, stir the water, and stir while shaking left and right, further accelerating the cooling speed of the water to further improve the cooling effect.

[0038] An inclined plate 26 is fixed to the inner wall of the water tank 2. A chute 261 is provided in the middle of the inclined plate 26, and the sliding rod 233 is inserted into the chute 261. The inclined surface of the inclined plate 26 from the outside to the inside is in an ascending form.

[0039] The bottom of the chute 261 is arc-shaped. A sphere 262 is fixed to the upper end of the push-pull plate 232, and the sphere 262 fits with the arc part of the chute 261;

[0040] While the sliding rod 233 moves left and right and rotates, it drives the push-pull plate 232 to move left and right and rotate at the same time. During this process, the sphere 262 at the upper end of the push-pull plate 232 moves left and right in the chute 261 of the inclined plate 26. Since the inclined surface of the inclined plate 26 from the outside to the inside is in an ascending form, as the push-pull plate 232 moves outward, the sphere 262 at its upper end is squeezed by the chute 261, so that the push-pull plate 232 gradually moves downward, and the elastic spring 25 is squeezed and deformed. When the push-pull plate 232 rotates and moves outward to stir the water, it stirs in a way from top to bottom, stirs more fully, and cools faster, keeping the water temperature constant at all times and avoiding the influence of the inability of the water temperature to dissipate heat quickly on the subsequent heat dissipation effect of the charging pile 4;

[0041] And by moving and rotating the sphere 262 in the chute 261, by setting the bottom of the chute 261 to be arc-shaped, the wear of the sphere 262 can be relatively reduced. On the one hand, it improves the service life of the structure, and on the other hand, it runs more smoothly and avoids the phenomenon of jamming.

[0042] A chamber 27 is fixed to the inner wall of the water tank 2. A hydraulic plate 271 is slidably connected to the inner wall of the chamber 27, and the hydraulic plate 271 is spring-connected to the inner wall of the chamber 27. A through hole 272 is opened on the outside of the chamber 27;

[0043] The sliding rod 233 is located at the middle position of the hydraulic plate 271, and both of them have magnetic properties with the same magnetic poles.

[0044] When the sliding rod 233 moves left and right, when the sliding rod 233 approaches the hydraulic plate 271, the magnetic repulsion force between them increases, thereby pushing the hydraulic plate 271 to slide outward on the inner wall of the chamber 27. The spring deforms under force, and the water outside the hydraulic plate 271 is squeezed and extruded out of the chamber 27 through the through holes 272, causing the water that cannot be stirred on the left and right sides inside the water tank 2 to surge up and down, achieving more comprehensive cooling and fully cooling the water in the water tank 2.

[0045] An elastic telescopic rod 28 is fixed to the bottom of the inner wall of the water tank 2. The upper end of the elastic telescopic rod 28 is spherical. A sleeve 223 is fixed to the bottom of the gear disk 222. A number of arc-shaped blocks 224 are evenly fixed to the inner wall of the sleeve 223. A number of arc-shaped blocks 224 are all located below the spherical part of the elastic telescopic rod 28, and after the elastic telescopic rod 28 retracts, the spherical part comes into contact with the arc-shaped blocks 224.

[0046] An air pump is connected by a pipeline between the elastic telescopic rod 28 and the inside of the chamber 27.

[0047] A temperature detector is arranged inside the water tank 2, and the temperature detector is electrically connected to the air pump. A temperature recognition module and an automatic switching module are arranged inside the temperature detector. The temperature recognition module and the automatic switching module are electrically connected. The temperature recognition module is used to recognize the water temperature inside the water tank 2 in real time, and the automatic switching module is used to control the air pump to perform air pressure control on the chamber 27 and the elastic telescopic rod 28 respectively according to the water temperature inside the water tank 2.

[0048] The thickness of half of the teeth of the gear disk 222 is equal to the thickness of the gear disk 222, and the thickness of the other half of the teeth is half of the thickness of the gear disk 222.

[0049] When the temperature recognition module recognizes that the water temperature is relatively high, the gas inside the hydraulic plate 271 is pumped out through the air pump, so that the air pressure inside the hydraulic plate 271 decreases. At the same time, the air pressure inside the elastic telescopic rod 28 is increased, causing the elastic telescopic rod 28 to extend to the limit position. At this time, when the sliding rod 233 pushes the hydraulic plate 271, the air pressure inside the hydraulic plate 271 is low and the initial position is more inward. Therefore, when the hydraulic plate 271 moves outward, the stroke increases, the intensity of surging the water on the left and right sides inside the water tank 2 increases, the cooling intensity increases. At the same time, the gear disk 222 is in the initial position, and all the teeth on its outer side can mesh with the toothed plate 231, ensuring the cooling intensity and improving the cooling efficiency.

[0050] When the temperature recognition module recognizes that the water temperature is relatively low, the air pump is used to increase the gas inside the hydraulic plate 271, thereby increasing the air pressure inside the hydraulic plate 271. At the same time, the air pressure inside the elastic telescopic rod 28 is reduced, causing the elastic telescopic rod 28 to retract, shortening the stroke of the hydraulic plate 271. This not only ensures that the water can be churned, but also relatively reduces the wear between the hydraulic plate 271 and the inner wall of the chamber 27. After the elastic telescopic rod 28 is shortened, the spherical part at its upper end contacts the arc-shaped block 224 inside the sleeve 223 and pulls the sleeve 223 downward, thereby driving the gear disk 222 to move downward. The elastic expansion joint 221 is stretched. Only half of the teeth of the gear disk 222 can mesh with the toothed plate 231, forming a fan-shaped tooth structure, which can not only shake the water, but also shake the water on the right side first and then the water on the left side, so that compared with shaking the water on both sides synchronously, the energy consumption of the motor 22 is relatively reduced and the operating cost is reduced.

[0051] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present invention.

[0052] Finally, it should be pointed out that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. These modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A heat dissipation device for a new energy vehicle charging pile, comprising a circulation pump (1), a water tank (2), a heat dissipation chamber (3) and a charging pile (4), characterized in that: The water tank (2) is fixedly installed above the circulation pump (1); a coil (31) is arranged inside the heat dissipation cavity (3); a motor (32) is fixed to the inner wall of the heat dissipation cavity (3); a fan blade (33) is fixed to the output end of the motor (32); a blown aluminum plate (41) is attached to one side of the charging pile (4); and a heat insulation layer (42) is attached to one side of the blown aluminum plate (41); The circulation pump (1) is provided with a water inlet and a water outlet, the blown aluminum plate (41) is provided with an inlet and an outlet, the water inlet is connected to the input end pipeline of the coil (31), the inlet is connected to the output end pipeline of the coil (31), the outlet is connected to the water outlet pipeline of the circulation pump (1), the fan blade (33) is aligned with the coil (31), a heat dissipation mechanism is provided inside the water tank (2), the inside of the water tank (2) is connected to the circulation pump (1) by a pipeline, an exhaust port (21) is provided above the water tank (2), the heat dissipation mechanism comprises a motor (22), an elastic expansion joint (221), a toothed disc (222) and two groups of reinforcement parts, the two groups of reinforcement parts both comprise a slide rail (23), a toothed plate (231) and a push-pull plate (232), and the blown aluminum plate (41) is provided with three types of flow channels.

2. A heat dissipation device for a new energy vehicle charging pile according to claim 1, characterized in that: The motor (22) is fixedly mounted above the inner wall of the water tank (2); the toothed disc (222) is fixedly connected to the output end of the motor (22) via an elastic expansion joint (221); the slide rail (23) is fixedly mounted on the inner wall of the water tank (2); the toothed plate (231) is slidably connected to the inner wall of the slide rail (23) and meshes with the toothed disc (222); The push-pull plate (232) is provided with a hole in the middle, and a slide rod (233) is slidably connected in the hole. A limit block (234) is fixed on the outer side of the slide rod (233), and the limit block (234) is located below the push-pull plate (232). The upper end of the slide rod (233) is connected to the bottom of the tooth plate (231) by a bearing.

3. A heat dissipation device for a new energy vehicle charging pile according to claim 2, characterized in that: A gear (235) is fixed to the lower end of the slide bar (233), a track (24) is fixed to the bottom of the inner wall of the water tank (2), and a rack is provided on the inner wall of the track (24), and the rack and the gear (235) are meshed with each other; An elastic spring (25) is connected between the limit block (234) and the bottom of the push-pull plate (232), and the elastic spring (25) is sleeved on the outer side of the slide rod (233).

4. A heat dissipation device for a new energy vehicle charging pile according to claim 3, characterized in that: An inclined plate (26) is fixed to the inner wall of the water tank (2), a slide groove (261) is arranged in the middle of the inclined plate (26), the slide rod (233) is inserted into the slide groove (261), and the inclined surface of the inclined plate (26) is ascending from the outside to the inside.

5. A heat dissipation device for a new energy vehicle charging pile according to claim 4, characterized in that: The bottom of the slide groove (261) is arc-shaped, and a sphere (262) is fixed to the upper end of the push-pull plate (232), and the sphere (262) and the arc-shaped portion of the slide groove (261) fit each other.

6. A heat dissipation device for a new energy vehicle charging pile according to claim 5, characterized in that: A chamber (27) is fixed on the inner wall of the water tank (2), a hydraulic plate (271) is slidably connected to the inner wall of the chamber (27), the hydraulic plate (271) is spring-connected to the inner wall of the chamber (27), and a through hole (272) is opened on the outer side of the chamber (27); The sliding rod (233) is located in the middle of the hydraulic plate (271), and both are magnetic and have the same magnetic poles.

7. A heat dissipation device for a new energy vehicle charging pile according to claim 6, characterized in that: An elastic telescopic rod (28) is fixed to the bottom of the inner wall of the water tank (2), the upper end of the elastic telescopic rod (28) is spherical, a sleeve (223) is fixed to the bottom of the toothed disc (222), a plurality of arc blocks (224) are evenly fixed to the inner wall of the sleeve (223), the plurality of arc blocks (224) are all located below the spherical portion of the elastic telescopic rod (28), and after the elastic telescopic rod (28) is retracted, the spherical portion and the arc blocks (224) are in contact with each other; An air pump is connected to a pipeline between the elastic telescopic rod (28) and the inner side of the chamber (27).

8. A heat dissipation device for a new energy vehicle charging pile according to claim 7, characterized in that: The water tank (2) is provided with a temperature detector inside, and the temperature detector is electrically connected to the air pump. The temperature detector is provided with a temperature recognition module and an automatic switching module inside, and the temperature recognition module and the automatic switching module are electrically connected. The temperature recognition module is used to recognize the water temperature in the water tank (2) in real time, and the automatic switching module is used to control the air pump to control the air pressure in the chamber (27) and the elastic telescopic rod (28) according to the water temperature in the water tank (2); The thickness of one half of the teeth of the toothed disk (222) is equal to the thickness of the toothed disk (222), and the thickness of the other half of the teeth is half of the thickness of the toothed disk (222).

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