A cooling device for a new energy vehicle charging pile

Abstract

The present invention relates to the technical field of charging piles, and discloses a cooling device for a charging pile of a new energy vehicle, including a charging pile box and a charging gun connected to the outer wall thereof and detachable for use, and also including a charging module arranged in the charging pile box, the outer walls on both sides of the charging pile box are provided with vents, the inner wall of the charging pile box is fixedly installed with a bottom plate and a top plate, the bottom plate, the top plate and the outer wall of the charging pile box together form a space, and a heat insulation box is fixedly installed on the top of the bottom plate. The present invention switches the heat dissipation mode under different temperature environments. In a hot environment, the charging module can be directly cooled and heat-exchanged to cool the charging module in a high temperature environment, thereby reducing performance fluctuations caused by excessively high temperatures; when working in a low temperature environment, it can prevent the charging speed from being too slow due to low charging efficiency and affecting the user experience, and indirect heat dissipation of the charging module can increase its service life and reduce safety hazards.

Description

Technical Field

[0001] The present invention relates to the technical field of charging piles, and in particular to a cooling device for a charging pile of a new energy vehicle. Background Art

[0002] With the popularity of new energy vehicles, new energy vehicle charging piles have become an indispensable device in daily life. Charging piles can provide electric energy for electric vehicles, and their role is similar to that of gas stations for fuel vehicles. It connects to the charging port of the vehicle and transmits electric energy to the battery of the vehicle, so that it can be charged, providing the necessary electric energy for the electric vehicle and ensuring its operation.

[0003] For example, Chinese patent publication number CN221293029U discloses a heat dissipation structure of a charging pile for new energy vehicles, including: a charging pile box located outside the charging pile body, waist-shaped heat dissipation holes 1 are evenly opened on both sides of the charging pile box, and a shielding plate 1 is fixedly connected to the top of the waist-shaped heat dissipation hole 1, and a gauze groove is opened in the middle of both sides of the charging pile box, and a detachable gauze is installed on the outside of the gauze groove with bolts; waist-shaped heat dissipation holes 2 are evenly opened on the back of the charging pile box, a DC fan is installed on the top inner wall of the charging pile box by bolts, heat dissipation fins are screwed on both sides of the shell of the charging pile body, and an operating table is fixedly connected to the front of the charging pile box; and a solar power generation mechanism for powering the DC fan. The utility model dissipates heat and cools the charging pile body through the heat dissipation mechanism, and the heat dissipation effect is better, thereby improving the charging efficiency of the charging pile, solving the safety hazard caused by internal heat accumulation under long-term charging, and has low maintenance costs, which can reduce unnecessary waste.

[0004] However, in real life, the low temperature in the winter environment is enough to help cool the charging pile. If the charging pile body is continuously cooled like the above device in winter, its temperature will be too low, which may cause the battery management system (BMS) to reduce the charging power to protect the battery, increase the charging time, and may even cause safety problems. Summary of the invention

[0005] The object of the present invention is to provide a cooling device for a new energy vehicle charging pile to solve at least one technical problem existing in the above-mentioned prior art.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a new energy vehicle charging pile cooling device, comprising a charging pile box and a charging gun connected to the outer wall thereof and detachable for use, and also comprising a charging module arranged in the charging pile box, the outer walls on both sides of the charging pile box are provided with vents, the inner wall of the charging pile box is fixedly provided with a bottom plate and a top plate, the bottom plate, the top plate and the outer wall of the charging pile box together form a space, the top of the bottom plate is fixedly provided with a heat insulation box, and the heat insulation box wraps the charging module therein, and the bottom of the heat insulation box is fixedly provided with a temperature sensor;

[0007] It also includes a heat dissipation component capable of blowing air to heat the charging module, and the heat insulation box enables the heat exchange airflow blown out by the heat dissipation component to have two ventilation channels:

[0008] First, the heat insulation box connects the inside and outside to form a ventilation channel, and the heat exchange airflow enters the heat insulation box and directly exchanges heat with the charging module;

[0009] Secondly, the heat insulation box has a sealed interior and a ventilation channel formed on its periphery, and the heat exchange airflow can pass through the heat insulation box to indirectly exchange heat with the charging module.

[0010] Preferably, the outer wall of one side of the heat insulation box is provided with a plurality of first air inlets, the outer wall of the other side of the heat insulation box is provided with a plurality of air outlets, a first airbag is fixedly mounted on the inner wall of the heat insulation box, a plurality of openings and closings are provided on both sides of the first airbag, and the openings and closings are closed when the first airbag is inflated and opened when it is deflated, and the openings and closings on both sides of the first airbag correspond one-to-one to the first air inlet and the air outlet respectively;

[0011] A second air inlet is also provided on the outer wall of one side of the heat insulation box, and an air outlet duct is installed inside the wall of the heat insulation box to connect the second air inlet with the outside;

[0012] Also included is a switching assembly capable of expanding and contracting the first airbag.

[0013] Preferably, the heat dissipation assembly includes an air inlet duct fixed between the outer wall of the heat insulation box and the inner wall of the charging pile box, and the vent on one side corresponds to the air inlet duct, a rotatable fan is fixedly installed on the inner wall of the air inlet duct through a mounting frame, and the first air inlet and the second air inlet are both in the air inlet duct.

[0014] Preferably, a second air bag is installed on the inner wall of the air inlet duct close to the heat insulation box, and the second air bag can close the second air inlet when it expands;

[0015] The switching assembly includes a piston body fixedly mounted on the top of the heat insulation box, and the piston body is filled with a liquid medium. A piston plate that can be vertically slidably adjusted is installed on the inner wall of the piston body. The chamber above the piston plate is connected to the second airbag through a second liquid inlet pipe, and the chamber below the piston plate is connected to the first airbag through a first liquid inlet pipe.

[0016] Preferably, a heating sleeve is fixedly mounted on the outer wall of the air inlet duct, and a heating coil is fixedly mounted on the inner wall of the heating sleeve.

[0017] Preferably, the outlet end of the air outlet duct extends into the space below the bottom plate, a return port is fixedly installed on the outer wall of the charging pile box body, and the return port is below the vent close to the fan, a water outlet is provided at the bottom of the return port, and the outlet end of the air outlet duct passes through the outer wall of the charging pile box body and is connected to the inside of the return port.

[0018] Preferably, a plurality of water absorbent cores are embedded and installed in the wall of the thermal insulation box, and each water absorbent core is connected to the air outlet of its row, a connecting pipe is fixedly connected to the bottom of the base plate, the connecting pipe is connected to the air outlet pipe, and the bottom end of the water absorbent core passes through the thermal insulation box and the base plate and extends into the connecting pipe.

[0019] Preferably, a buffer layer is provided at the bottom of the connection point where the connecting pipe communicates with the water absorbent core.

[0020] Preferably, the shape of the opening after opening is elliptical.

[0021] Preferably, the outer wall of the heating sleeve is coated with a heat insulation layer.

[0022] Compared with the prior art, the present invention has the following beneficial effects:

[0023] The present invention switches the heat dissipation mode in different environments. In a hot environment, the charging module can be directly cooled and heat exchanged to cool the charging module in a high temperature environment, thereby reducing performance fluctuations caused by excessively high temperatures. When working in a low temperature environment, it can prevent the slow charging speed caused by low charging efficiency from affecting the user experience, and the low temperature of the charging module can cause the internal components to decline and increase the risk of failure. Indirect heat dissipation of the charging module can increase its service life and eliminate safety hazards. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a front view of the present invention;

[0025] Figure 2 A perspective view of the present invention;

[0026] Figure 3 It is a cross-sectional schematic diagram of the heat insulation box in the present invention;

[0027] Figure 4 is a cross-sectional schematic diagram of the fan in the present invention;

[0028] Figure 5 is a cross-sectional schematic diagram of the first air inlet in the present invention;

[0029] Figure 6 It is a partial front cross-sectional view of the present invention;

[0030] Figure 7 It is a schematic diagram of the opening and closing of the present invention;

[0031] Figure 8 is a schematic diagram of the air outlet duct in the present invention;

[0032] Fig. 9 Schematic diagram of the water absorbent core in the present invention;

[0033] Fig.10 For the present invention Figure 2 A in the enlarged view;

[0034] Fig.11 For the present invention Fig. 9 Enlarged view of point B in .

[0035] In the figure: 1. Charging pile box; 2. Charging gun; 3. Ventilation port; 4. Return port; 5. Bottom plate; 6. Top plate; 7. Heat insulation box; 8. Charging module; 9. Air inlet duct; 10. Mounting frame; 11. Fan; 12. Heating sleeve; 13. First air inlet; 14. Second air inlet; 15. First air bag; 16. Opening and closing port; 17. Piston body; 18. Piston plate; 19. First liquid inlet duct; 20. Heating coil; 21. Second air bag; 22. Air outlet duct; 23. Second liquid inlet duct; 24. Air outlet; 25. Temperature sensor; 26. Water absorbent core; 27. Connecting pipe; 28. Cache layer; 29. ​​Water outlet. DETAILED DESCRIPTION

[0036] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0037] See also Figures 1 to 11The present invention provides a technical solution: a new energy vehicle charging pile cooling device, comprising a charging pile box 1 and a charging gun 2 connected to the outer wall thereof and detachable for use, and also comprising a charging module 8 arranged in the charging pile box 1, and vents 3 are provided on both sides of the outer wall of the charging pile box 1, and a bottom plate 5 and a top plate 6 are fixedly installed on the inner wall of the charging pile box 1, and the bottom plate 5, the top plate 6 and the outer wall of the charging pile box 1 together form a space, and a heat insulation box 7 is fixedly installed on the top of the bottom plate 5, and the heat insulation box 7 wraps the charging module 8 therein, and a temperature sensor 25 is fixedly installed on the bottom of the heat insulation box 7;

[0038] It also includes a heat dissipation component that can blow air to heat the charging module 8, and the heat insulation box 7 can make the heat exchange airflow blown out by the heat dissipation component have two ventilation channels:

[0039] First, the heat-insulating box 7 is connected inside and outside to form a ventilation channel, and the heat exchange airflow enters the heat-insulating box 7 and directly exchanges heat with the charging module 8;

[0040] Secondly, the heat insulation box 7 has a sealed interior and forms a ventilation channel on its periphery, and the heat exchange airflow can pass through the heat insulation box 7 to indirectly exchange heat with the charging module 8.

[0041] When using this device in a hotter environment, take the charging gun 2 out of the charging pile box 1 and connect it to the charging port of the new energy vehicle to be charged. The charging module 8 starts working and will gradually generate heat. At the same time, the inside and outside of the heat insulation box 7 are connected to form a ventilation channel, the heat dissipation component is started, and the heat exchange airflow will pass through the inside of the heat insulation box 7 to exchange heat with the charging module 8, and then be discharged to the outside again from the vent 3.

[0042] When the ambient temperature is relatively cold, when the temperature sensor 25 detects that the internal temperature is lower than the preset value, the inside of the thermal insulation box 7 will be closed and a ventilation channel will be formed on its periphery. When the charging module 8 starts to work, the heat emitted by the charging module 8 will first increase the temperature inside the thermal insulation box 7 until it reaches the preset temperature (i.e., the suitable temperature of the charging module 8). At this time, the heat dissipation component will blow the heat exchange airflow to the ventilation duct outside the thermal insulation box 7 to cool down the thermal insulation box 7, so as to achieve the purpose of cooling the charging module 8 inside the thermal insulation box 7. This can not only dissipate heat for the charging module 8, but also keep it at a suitable ambient temperature for its operation, thereby ensuring a normal charging rate.

[0043] In this way, by switching the heat dissipation methods in different environments, in a hot environment, the charging module 8 can be directly cooled and heat exchanged, and the charging module 8 in a high temperature environment can be cooled and dissipated to reduce the performance fluctuations caused by excessive temperature; when working in a low temperature environment, it can prevent the slow charging speed due to low charging efficiency from affecting the user experience, and the low temperature of the charging module 8 will cause the internal components to decline and increase the risk of failure. Indirect heat dissipation of the charging module 8 can increase its service life and reduce safety hazards.

[0044] Furthermore, a plurality of first air inlets 13 are provided on the outer wall of one side of the heat insulation box 7, a plurality of air outlets 24 are provided on the outer wall of the other side of the heat insulation box 7, a first airbag 15 is fixedly mounted on the inner wall of the heat insulation box 7, a plurality of openings 16 that can be opened and closed are provided on both sides of the first airbag 15, and the openings 16 are closed when the first airbag 15 is inflated and opened when it is deflated, and the openings 16 on both sides of the first airbag 15 correspond one by one to the first air inlet 13 and the air outlet 24 respectively;

[0045] A second air inlet 14 is also provided on the outer wall of one side of the heat insulation box 7, and an air outlet duct 22 is installed inside the wall of the heat insulation box 7 to connect the second air inlet 14 with the outside;

[0046] The device also includes a switching assembly capable of expanding and contracting the first airbag 15 .

[0047] See also Figure 5 , Figure 6 as well as Figure 7 When the environment is relatively hot, the first airbag 15 is contracted by switching the assembly, so that the opening and closing port 16 is opened. When the opening and closing port 16 is opened, the first air inlet 13 and the air outlet 24 are used to connect the inside and outside of the heat insulation box 7 to form a ventilation channel (i.e., the first ventilation channel mentioned above). When the charging module 8 is working, the heat exchange airflow is blown into the heat insulation box 7 through the first air inlet 13 through the heat dissipation assembly, and then discharged out of the heat insulation box 7 through the air outlet 24, so as to achieve the purpose of direct heat exchange for the charging module 8. In this process, the heat on the surface of the charging module 8 can be continuously taken away, so that the charging module 8 can keep running at a suitable temperature, thereby improving the working efficiency of the charging module 8, and can also prevent it from overheating and causing safety accidents such as short circuit and fire, which not only increases the service life of the charging module 8, but also effectively prevents the occurrence of safety accidents.

[0048] When the temperature sensor 25 detects that the ambient temperature drops to a preset value, the first airbag 15 is inflated by the switching component, so that the opening 16 is closed, and the first air inlet 13 and the air outlet 24 are sealed. At this time, when the charging module 8 starts to work, the heat exchange airflow blown in by the heat dissipation component can only enter the air outlet duct 22 (i.e., the second ventilation channel mentioned above) through the second air inlet 14. Figure 8Since the air outlet duct 22 is arranged inside the wall of the heat insulation box 7, the heat exchange airflow will cool down the heat insulation box 7 while flowing in the air outlet duct 22, thereby achieving the purpose of indirect cooling of the charging module 8, preventing the charging module 8 from being directly cooled down in a cold environment, resulting in excessive cooling. Indirect cooling can not only maintain a good charging efficiency of the charging module 8, but also prevent the charging module 8 from accelerating aging, thereby increasing its service life.

[0049] It is worth noting that when the first ventilation channel is used to dissipate heat from the charging module 8 in a hot environment, the heat exchange airflow blown out by the heat dissipation component can also enter from the second air inlet 14, thereby cooling the heat insulation box 7.

[0050] In addition, it is worth mentioning that a magnetic strip can also be installed at the opening and closing opening 16. When the first airbag 15 expands to close the opening and closing opening 16, the magnetic strip can enhance the sealing performance of the first air inlet 13 and the air outlet 24.

[0051] Furthermore, the heat dissipation component includes an air inlet duct 9 fixed between the outer wall of the heat insulation box 7 and the inner wall of the charging pile box 1, and a side vent 3 corresponds to the air inlet duct 9. A rotatable fan 11 is fixedly installed on the inner wall of the air inlet duct 9 through a mounting frame 10, and the first air inlet 13 and the second air inlet 14 are both in the air inlet duct 9.

[0052] See also Figure 3 as well as Figure 4 In a hot environment, when the charging module 8 needs to dissipate heat, the fan 11 is driven to rotate, so that the outside air is blown into the air inlet duct 9 through the vent 3, and the charging module 8 is continuously blown through the first air inlet 13 and the air outlet 24, taking away the temperature of its surface, and then discharged from the vent 3 on the other side;

[0053] In a cold environment, the first air inlet 13 and the air outlet 24 are closed by switching the components. After the outside air is blown into the air inlet duct 9 through the vent 3, the heat exchange airflow can only enter the air outlet duct 22 through the second air inlet 14, and is discharged to the outside again from the air outlet duct 22. While the heat exchange airflow continues to flow from the air outlet duct 22, the wall of the insulation box 7 will be cooled, thereby achieving the purpose of cooling the charging module 8 inside the insulation box 7.

[0054] Furthermore, a second air bag 21 is installed on the inner wall of the air inlet duct 9 close to the heat insulation box 7, and the second air bag 21 can close the second air inlet 14 when it expands;

[0055] The switching assembly includes a piston body 17 fixedly mounted on the top of the heat insulation box 7, and the piston body 17 is filled with a liquid medium. A piston plate 18 that can be vertically slidably adjusted is mounted on the inner wall of the piston body 17. The chamber above the piston plate 18 is connected to the second airbag 21 through a second liquid inlet pipe 23, and the chamber below the piston plate 18 is connected to the first airbag 15 through a first liquid inlet pipe 19.

[0056] See also Figure 6 When the environment is hot and the first airbag 15 needs to be contracted, the first liquid inlet pipe 19 is controlled to slide upward by the cylinder fixed to the bottom of the top plate 6, so that the liquid medium in the lower chamber of the first airbag 15 is sucked into the piston body 17 to shrink the first airbag 15, and the liquid medium in the upper part of the first airbag 15 is injected into the second airbag 21 to expand it, so that the opening and closing port 16 is opened and connected with the first air inlet 13 and the air outlet 24 respectively. The expanded second airbag 21 will close the second air inlet 14 and gradually reduce the inner diameter of the air inlet pipe 9 to cut Switch to the first ventilation channel mentioned above, and then drive the fan 11 to rotate to complete the direct heat exchange and cooling of the charging module 8; wherein, after the second airbag 21 expands to reduce the inner diameter of the air inlet duct 9, according to the Venturi tube principle, the air flow rate will increase as the channel shrinks, and the increase in air flow rate can bring two effects: first, it speeds up the air flow, thereby improving the heat dissipation efficiency; second, the increase in flow rate leads to a decrease in air pressure, which helps to absorb more air from the surrounding environment into the wind flow, thereby increasing the air volume, which can improve the cooling effect on the charging module 8;

[0057] When the first airbag 15 needs to be inflated in a cold environment, the first liquid inlet pipe 19 is controlled to slide downward through the top plate 6, so that the liquid medium in the chamber below the piston plate 18 is injected into the first airbag 15, and the liquid medium in the second airbag 21 is drawn into the chamber above the piston plate 18, so that the first airbag 15 is inflated and the second airbag 21 is contracted, thereby closing the opening and closing port 16 and closing the first air inlet 13 and the air outlet 24, and the contraction of the second airbag 21 will open the second air inlet 14 to switch to the second ventilation channel mentioned above, and then drive the fan 11 to rotate to complete the above-mentioned indirect heat dissipation of the charging module 8.

[0058] In this way, the switching of the two ventilation ducts is completed by controlling the up and down movement of the piston plate 18. In a hot environment, the charging module 8 can be cooled more effectively to prevent safety hazards under high temperatures; in a cold environment, the charging module 8 can be cooled indirectly to prevent the charging rate from being too slow due to the low temperature.

[0059] It is worth noting that the liquid medium mentioned therein can be antifreeze to prevent it from condensing into ice when the environment is cold.

[0060] Furthermore, a heating sleeve 12 is fixedly mounted on the outer wall of the air inlet duct 9 , and a heating coil 20 is fixedly mounted on the inner wall of the heating sleeve 12 .

[0061] By switching between the two ventilation channels mentioned above, the charging module 8 can be directly cooled in summer, and the charging module 8 can be indirectly cooled in cold environments. However, research shows that in ultra-low temperature environments, the power chip may not be able to start normally, affecting the startup process of the charging module.

[0062] See also Figure 6 A heating sleeve 12 is installed on the outer wall of the air inlet duct 9, and a heating coil 20 is installed inside the heating sleeve 12. When the temperature sensor 25 detects that the outside temperature reaches the set value, the heating coil 20 will start, and the air inside the air inlet duct 9 is sucked in by the fan 11 for heating, so that it enters the air outlet duct 22 through the second air inlet 14, and the outer wall of the heat insulation box 7 is heated. The greenhouse environment generated by the heat insulation box 7 is used to preheat the charging module 8 until the temperature inside it rises to the adaptive starting temperature of the charging module 8, and the charging module 8 starts to work. When the charging module 8 works for a period of time, Afterwards, the heat generated by the charging module 8 will cause the temperature inside the insulation box 7 to rise again. When the temperature sensor 25 detects that the temperature inside it exceeds the preset value, the heating coil 20 stops working, that is, stops heating the airflow entering the air inlet duct 9. At this time, the heat exchange airflow begins to dissipate heat to the insulation box 7 to lower the temperature of the insulation box 7, thereby achieving the purpose of indirect cooling of the charging module 8 after it has been started for a period of time, thereby maintaining the temperature within a range suitable for the operation of the charging module 8, to ensure that the electronic components and circuits of the charging module 8 operate in the best state, thereby improving the energy conversion efficiency and overall performance.

[0063] Furthermore, the outlet end of the air outlet duct 22 extends into the space below the bottom plate 5, a return port 4 is fixedly installed on the outer wall of the charging pile box 1, and the return port 4 is below the vent 3 close to the fan 11, and a water outlet 29 is provided at the bottom of the return port 4, and the outlet end of the air outlet duct 22 passes through the outer wall of the charging pile box 1 and is connected to the inside of the return port 4.

[0064] See also Figure 6 When the charging module 8 is preheated, the cold air may generate condensed water when heated. When the generated condensed water enters the air outlet duct 22, it will be discharged into the return port 4 along the air outlet duct 22, and then flow out from the water outlet 29; at the same time, the heated air will be discharged from the outlet of the air outlet duct 22 into the return port 4. With the assistance of the return port 4, the exhausted hot air will float to the vent 3 above, drying the cold air that is about to enter the vent 3, thereby reducing the formation of condensed water in the air inlet duct 9.

[0065] Furthermore, a plurality of water absorbent cores 26 are embedded and installed in the wall of the heat insulation box 7, and each water absorbent core 26 is connected to the air outlet 24 in the same row as it is located. A connecting pipe 27 is fixedly connected to the bottom of the base plate 5, and the connecting pipe 27 is connected to the air outlet pipe 22. The bottom end of the water absorbent core 26 passes through the heat insulation box 7 and the base plate 5 and extends into the connecting pipe 27.

[0066] See also Fig. 9 In an extremely cold environment, the heat insulation box 7 will be heated while the charging module 8 is preheated, so that the outer wall of the heat insulation box 7 is relatively high in temperature relative to the outside. When the cold air in the space formed by the bottom plate 5 and the top plate 6 contacts the heat insulation box 7, condensation water may be generated, especially in the air outlet 24. When condensation water is generated in the air outlet 24, it will be absorbed by the water absorption core 26. While the heat exchange airflow continues to flow in the air outlet duct 22, a certain negative pressure will be generated in the connecting pipe 27, and then the condensation water in the water absorption core 26 will flow into the connecting pipe 27. Under the heating of the high-temperature airflow, the condensation water will be vaporized and discharged into the outside of the charging pile box 1 through the air outlet duct 22.

[0067] Furthermore, a buffer layer 28 is provided at the bottom of the connection point where the connecting pipe 27 and the water absorbent core 26 are connected.

[0068] See also Fig.10 When heating is stopped, the condensed water flowing into the connecting pipe 27 may freeze into ice. A buffer layer 28 is opened at the bottom of the connecting pipe 27. The condensed water flowing into the connecting pipe 27 will flow into the buffer layer 28, which can prevent the condensed water from freezing and clogging the connecting pipe 27.

[0069] Furthermore, the shape of the opening and closing opening 16 after opening is an ellipse.

[0070] The oval opening can be closed more tightly when the first airbag 15 is inflated because the oval geometry is more easily deformed and sealed under pressure, which helps prevent gas leakage.

[0071] Furthermore, the outer wall of the heating sleeve 12 is coated with a heat insulation layer.

[0072] Applying a heat insulating layer on the outer wall of the heating sleeve 12 can slow down the increase in the temperature of the outer wall of the heating sleeve 12 when the heating coil 20 is heating, and can prevent cold air from contacting the heating coil 20 to generate condensed water to a certain extent.

[0073] The standard parts used in this embodiment can be purchased directly from the market, and the non-standard structural components recorded in the specification and the drawings can also be directly processed according to the existing technical common sense. At the same time, the connection method of each component adopts the mature conventional means in the prior art, and the machinery, parts and equipment all adopt the conventional models in the prior art, so no specific description will be given here.

[0074] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A new energy vehicle charging pile cooling device, comprising a charging pile box (1) and a charging gun (2) connected to the outer wall thereof and detachable for use, and also comprising a charging module (8) arranged in the charging pile box (1), characterized in that: Ventilation holes (3) are provided on both sides of the outer walls of the charging pile box (1); a bottom plate (5) and a top plate (6) are fixedly installed on the inner wall of the charging pile box (1); the bottom plate (5), the top plate (6) and the outer wall of the charging pile box (1) together form a space; a heat insulation box (7) is fixedly installed on the top of the bottom plate (5), and the heat insulation box (7) wraps the charging module (8) therein; a temperature sensor (25) is fixedly installed on the bottom of the heat insulation box (7); It also includes a heat dissipation component capable of blowing air to exchange heat for the charging module (8), and the heat insulation box (7) can enable the heat exchange airflow blown out by the heat dissipation component to have two ventilation channels: Firstly, the heat-insulating box (7) is connected inside and outside to form a ventilation passage, and the heat exchange airflow enters the heat-insulating box (7) and directly exchanges heat with the charging module (8); Secondly, the heat insulation box (7) is sealed inside and a ventilation channel is formed on its periphery, so that the heat exchange airflow can indirectly exchange heat with the charging module (8) through the heat insulation box (7); The outer wall of one side of the heat insulation box (7) is provided with a plurality of first air inlets (13), and the outer wall of the other side of the heat insulation box (7) is provided with a plurality of air outlets (24); a first air bag (15) is fixedly mounted on the inner wall of the heat insulation box (7); a plurality of openings (16) that can be opened and closed are provided through both sides of the first air bag (15); when the first air bag (15) is expanded, the openings (16) are closed, and when the first air bag (15) is contracted, the openings (16) on both sides of the first air bag (15) correspond one-to-one to the first air inlet (13) and the air outlet (24); A second air inlet (14) is also provided on an outer wall of one side of the heat insulation box (7), and an air outlet duct (22) is installed inside the wall of the heat insulation box (7) so as to connect the second air inlet (14) with the outside; It also includes a switching component capable of expanding and contracting the first air bag (15).

2. The cooling device for a new energy vehicle charging pile according to claim 1 is characterized in that: The heat dissipation component comprises an air inlet duct (9) fixed between the outer wall of the heat insulation box (7) and the inner wall of the charging pile box (1), and the ventilation opening (3) on one side corresponds to the air inlet duct (9), a rotatable fan (11) is fixedly mounted on the inner wall of the air inlet duct (9) via a mounting frame (10), and the first air inlet (13) and the second air inlet (14) are both located in the air inlet duct (9).

3. The cooling device for the new energy vehicle charging pile according to claim 2 is characterized in that: A second air bag (21) is also installed on the inner wall of the air inlet duct (9) close to the heat insulation box (7), and the second air bag (21) can close the second air inlet (14) when it expands; The switching assembly comprises a piston body (17) fixedly mounted on the top of the heat-insulating box (7), and the piston body (17) is filled with a liquid medium, and a piston plate (18) capable of vertical sliding adjustment is mounted on the inner wall of the piston body (17), the chamber above the piston plate (18) is connected to the second airbag (21) through a second liquid inlet pipe (23), and the chamber below the piston plate (18) is connected to the first airbag (15) through a first liquid inlet pipe (19).

4. The cooling device for a new energy vehicle charging pile according to claim 3 is characterized in that: A heating sleeve (12) is fixedly mounted on the outer wall of the air inlet duct (9), and a heating coil (20) is fixedly mounted on the inner wall of the heating sleeve (12).

5. The cooling device for a new energy vehicle charging pile according to claim 1 is characterized in that: The outlet end of the air outlet duct (22) extends into the space below the bottom plate (5); a return port (4) is fixedly mounted on the outer wall of the charging pile box (1), and the return port (4) is located below the ventilation port (3) close to the fan (11); a water outlet (29) is provided at the bottom of the return port (4); and the outlet end of the air outlet duct (22) penetrates the outer wall of the charging pile box (1) and is in communication with the inside of the return port (4).

6. The cooling device for the new energy vehicle charging pile according to claim 4 is characterized in that: A plurality of water absorbent cores (26) are embedded and installed in the wall of the heat insulation box (7), and each water absorbent core (26) is connected to the air outlet (24) in the same row as it is located. A connecting pipe (27) is fixedly connected to the bottom of the base plate (5), and the connecting pipe (27) is connected to the air outlet pipe (22). The bottom end of the water absorbent core (26) passes through the heat insulation box (7) and the base plate (5) and extends into the connecting pipe (27).

7. The cooling device for a new energy vehicle charging pile according to claim 6 is characterized in that: A buffer layer (28) is provided at the bottom of the connection point between the connecting pipe (27) and the water absorbent core (26).

8. The cooling device for a new energy vehicle charging pile according to claim 1, characterized in that: The shape of the opening and closing opening (16) after opening is an ellipse.

9. The cooling device for a new energy vehicle charging pile according to claim 4, characterized in that: The outer wall of the heating sleeve (12) is coated with a heat insulation layer.

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