A charging pile with a buried heat dissipation structure

Abstract

The application discloses a charging pile with a buried heat dissipation structure, which comprises a charging pile, a cooling box, a photovoltaic power generation mechanism and a circulating pump. The cooling box is buried in the ground below the charging pile, and is filled with circulating liquid. The cooling box is provided with a liquid inlet pipe and a liquid outlet pipe extending into the charging pile. The photovoltaic power generation mechanism is arranged on the top of the charging pile. The heat dissipation fan is arranged on the top of the charging pile and is electrically connected with the photovoltaic power generation mechanism. The heat dissipation fan blows air into the charging pile for heat dissipation. The output end of the heat dissipation fan is provided with a blowing fan blade, and the blowing fan blade is provided with a meshing tooth plate at the center. The circulating pump is communicated with the liquid inlet pipe and the liquid outlet pipe, and is used to drive the circulating liquid in the cooling box to flow. The temperature sensing and adjusting mechanism is arranged, which can drive different heat dissipation and cooling units to work according to different temperature intervals in the charging pile.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of charging pile structure, and particularly relates to a charging pile with a buried heat dissipation structure. BACKGROUND

[0002] The charging pile for modern electric vehicles is becoming more and more popular with the development of intelligent technology and lithium battery technology, and the electric vehicle has a certain historical trend of replacing the traditional fuel vehicle. The ultimate goal is also to reduce carbon emissions and improve the air environment of urban life. Therefore, the popularization of direct current charging piles in urban planning is essential.

[0003] Although the electric vehicle charging pile is small, the intelligent and automatic level is not low, which contains integrated circuit chip technology and lithium battery technology. However, in the hot summer, the internal electric appliance heat dissipation becomes an important problem, especially the electronic equipment in the high temperature environment for a long time can greatly reduce its service life. In fact, the existing micro air conditioner or heat dissipation fan in the charging pile body cannot solve the fundamental problem. The former has a large power consumption, and the latter is difficult to quickly cool in the high temperature weather outside and the long time of the charging pile under the direct sunlight, so there is room for improvement. Therefore, a charging pile with a buried heat dissipation structure is provided to solve the above problems. SUMMARY

[0004] The purpose of the present application is to solve the above problems, and provide a charging pile with a buried heat dissipation structure.

[0005] To solve the above technical problems, the present application adopts the following technical scheme: a charging pile with a buried heat dissipation structure, comprising:

[0006] a charging pile;

[0007] a cooling box, the cooling box is buried in the ground below the charging pile, the cooling box is filled with circulating liquid, the cooling box is provided with a liquid inlet pipe and a liquid outlet pipe extending into the charging pile, and the cooling box is provided with a threaded exchange pipe for heat exchange;

[0008] a photovoltaic power generation mechanism, the photovoltaic power generation mechanism is arranged on the top of the charging pile;

[0009] a heat dissipation fan, the heat dissipation fan is arranged on the top of the charging pile and is electrically connected with the photovoltaic power generation mechanism, the heat dissipation fan blows air to dissipate heat in the charging pile, the output end of the heat dissipation fan is provided with a blowing fan blade, and the blowing fan blade is provided with a meshing tooth plate at the center;

[0010] a circulating pump, the circulating pump is in communication with the liquid inlet pipe and the liquid outlet pipe, and is used to drive the circulating liquid in the cooling box to flow.

[0011] The temperature sensing adjusting mechanism is arranged in the charging pile, and comprises a temperature sensing unit, a communication sleeve, a transmission shaft arranged in the communication sleeve, and a driven unit arranged at the end of the transmission shaft. The transmission shaft is in driving connection with the circulating pump. The temperature sensing unit is arranged in the communication sleeve to drive the transmission shaft to stretch and contract according to the temperature change in the charging pile, so that the driven unit at the end of the transmission shaft is clamped with the meshing tooth plate, and then the circulating pump is driven to operate by the cooling fan to draw the circulating liquid in the cooling box into the threaded exchange pipe to exchange heat with the charging pile, so as to reduce the temperature in the charging pile.

[0012] Further, the heat dissipation fins are arranged outside the charging pile.

[0013] The heat dissipation fins are composed of a plurality of groups of vertically equidistantly arranged corrugated metal sheets, and the material of the heat dissipation fins is copper.

[0014] Further, the spraying mechanism is arranged for spraying the circulating liquid in the cooling box onto the heat dissipation fins to reduce the temperature in the charging pile by evaporation of the circulating liquid.

[0015] The spraying mechanism comprises a liquid discharge pipe in communication with the circulating pump and a spraying seat corresponding to the heat dissipation fins.

[0016] The spraying seat is provided with a spray opening corresponding to the gap between the corrugated metal sheets.

[0017] Further, the liquid discharge pipe is arranged on the communication sleeve, and the communication sleeve is further provided with a communication pipe corresponding to the threaded exchange pipe. The liquid discharge pipe and the communication pipe are oppositely arranged.

[0018] The transmission shaft is provided with a communication hole for communicating the liquid discharge pipe and the communication pipe. The communication hole is arranged in a staggered manner with the liquid discharge pipe, so as to make the transmission shaft advance under the pushing of the temperature sensing unit when the temperature in the charging pile rises, so that the communication hole communicates the liquid discharge pipe and the threaded exchange pipe, and part of the circulating liquid is discharged onto the heat dissipation fins through the spraying seat.

[0019] Further, the cooling fan comprises a top cover arranged at the top of the charging pile. The top cover is provided with an air inlet hole. The top cover is provided with a power unit at the center. The output end of the power unit extends into the charging pile and is provided with a blowing fan blade.

[0020] Further, the circulating liquid in the cooling box is water. The cooling box is provided with a water supply pipe and a water level monitoring unit to maintain the water level in the cooling box.

[0021] Further, the driven unit and the meshing tooth plate are two groups of transmission discs arranged in opposite positions. The two groups of transmission discs are provided with mutually meshing connecting clutches.

[0022] Further, the charging pile is internally provided with threaded exchange pipes, the number of the threaded exchange pipes is multiple groups and all are communicated with the liquid outlet end of the circulating pump;

[0023] The other end of the threaded exchange pipe is communicated with the liquid outlet pipe, so as to be discharged into the cooling box through the liquid outlet pipe after heat exchange is completed.

[0024] Further, the temperature sensing unit is used to obtain the internal temperature of the charging pile, the controller is used to control the electric push rod to extend in different degrees according to the internal temperature interval of the charging pile, so as to drive the circulating pump to run or run synchronously with the spraying mechanism.

[0025] Further, the driven unit is sleeved on the end of the transmission shaft, the driven unit is internally provided with a clamping structure corresponding to the transmission shaft, a resisting spring is sleeved on the transmission shaft and abuts against the driven unit, so that the transmission shaft can be further extended after the driven unit is in meshing contact with the meshing tooth plate;

[0026] The clamping structure comprises a clamping pin arranged at the end of the transmission shaft and a sliding groove opened in the internal of the driven unit;

[0027] The communication hole is misaligned with the liquid outlet pipe by a distance equal to the length of the sliding groove, so that the communication hole can correspond to the liquid outlet pipe when the transmission shaft is advanced.

[0028] The beneficial effects of the present application are embodied in:

[0029] In the present application, the temperature sensing adjusting mechanism is arranged, which can drive different heat dissipation cooling units to work respectively according to different temperature intervals in the charging pile during use. In the normal use state, the heat dissipation fan runs, draws the air at the top and discharges from the air outlet at both sides of the charging pile from top to bottom, drives the air circulation in the charging pile and achieves the purpose of cooling. In the high temperature state, the transmission shaft is extended by the temperature sensing unit, the driven unit is meshed with the meshing tooth plate, the circulating pump is driven to run by the heat dissipation fan, the circulating liquid in the cooling box is drawn into the charging pile for heat exchange, and the internal temperature of the charging pile is reduced. In the extreme high temperature condition, the transmission shaft is further extended by the temperature sensing unit, the communication hole and the liquid outlet pipe on the transmission shaft are communicated, part of the circulating liquid enters the liquid outlet pipe through the communication hole during the running of the circulating pump, and is discharged to the heat dissipation fins through the spraying seat. The circulating liquid falls on the copper heat dissipation fins and evaporates quickly, which takes away most of the heat on the surface of the cooling box and achieves the purpose of rapid cooling. BRIEF DESCRIPTION OF DRAWINGS

[0030] Figure 1 It is the installation schematic view of the present application;

[0031] Figure 2 is a perspective view of the present application;

[0032] Figure 3 is a perspective back view of the present application;

[0033] Figure 4 is a perspective view of the heat dissipation structure of the present application;

[0034] Figure 5 is a perspective view of the heat dissipation structure of the present application;

[0035] Figure 6 is a perspective view of the heat dissipation structure of the present application;

[0036] Figure 7 is a perspective view of the heat dissipation structure of the present application; Figure 6 is a partial enlarged view of A in the figure;

[0037] Figure 8 is a structural view of another embodiment of the present application;

[0038] Figure 9 is a structural view of another embodiment of the present application.

[0039] in the figure:

[0040] 01, charging pile;

[0041] 1, cooling box; 11, liquid inlet pipe; 12, liquid outlet pipe;

[0042] 2, photovoltaic power generation mechanism;

[0043] 3, heat dissipation fan; 31, blowing fan blade; 311, meshing tooth plate; 32, power unit; 33, top cover;

[0044] 4, heat dissipation fin;

[0045] 5, circulating pump;

[0046] 6, temperature sensing adjusting mechanism; 61, temperature sensing unit; 62, communication sleeve; 63, driven unit; 631, abutting spring; 64, transmission shaft; 641, communication hole; 65, clamping structure;

[0047] 7, spraying mechanism; 71, liquid discharge pipe;

[0048] 8, threaded exchange pipe. DETAILED DESCRIPTION

[0049] With reference to the drawings of the embodiments of the present application, the technical solutions in the embodiments of the present application will be described clearly and completely. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. The embodiments in the present application and the features in the embodiments can be combined with each other without conflict. Based on the embodiments in the present application, all the other embodiments obtained by those skilled in the art without creative work are within the protection scope of the present application.

[0050] Please refer to Figures 1-9 The application discloses a charging pile with a buried heat dissipation structure, which comprises:

[0051] The charging pile 01;

[0052] The cooling box 1 is buried in the ground below the charging pile 01, the cooling box 1 is filled with circulating liquid, the cooling box 1 is provided with a liquid inlet pipe 11 and a liquid outlet pipe 12 extending into the charging pile 01, it is necessary to supplement that the liquid inlet pipe 11 extends to the bottom of the cooling box 1, and the liquid outlet pipe 12 is arranged at the top of the cooling box 1, and the cooling box 1 is provided with a threaded exchange pipe 8 for heat exchange;

[0053] The photovoltaic power generation mechanism 2 is arranged on the top of the charging pile 01, and the photovoltaic power generation mechanism 2 further comprises the related equipment commonly used in the prior art, such as a control unit, a wire and a power storage structure, which are not described in detail in the present application.

[0054] The heat dissipation fan 3 is arranged on the top of the charging pile 01 and is electrically connected with the photovoltaic power generation mechanism 2, the heat dissipation fan 3 blows air to dissipate heat in the charging pile 01, the output end of the heat dissipation fan 3 is provided with a blowing fan blade 31, and the blowing fan blade 31 is provided with a meshing tooth plate 311 at the center.

[0055] The circulating pump 5 is communicated with the liquid inlet pipe 11 and the liquid outlet pipe 12, and is used to drive the circulating liquid in the cooling box 1 to flow.

[0056] A temperature sensing adjusting mechanism 6 is arranged in the charging pile 01, and the temperature sensing adjusting mechanism 6 comprises a temperature sensing unit 61, a communication sleeve 62, a transmission shaft 64 arranged in the communication sleeve 62, and a driven unit 63 arranged at the end of the transmission shaft 64. The transmission shaft 64 is in transmission connection with the circulating pump 5. The temperature sensing unit 61 is arranged in the communication sleeve 62 and is used to drive the transmission shaft 64 to extend or retract according to the change of the temperature in the charging pile 01, so that the driven unit 63 at the end of the transmission shaft 64 is in clamping connection with the meshing tooth plate 311, and then the circulating pump 5 is driven by the cooling fan 3 to operate to draw the circulating liquid in the cooling box 1 into the threaded exchange pipe 8 to exchange heat with the charging pile 01, so as to reduce the temperature in the charging pile 01. It should be noted that the circulating pump 5 can be a centrifugal pump. As shown in Figures 6-7 The communication sleeve 62 is fixedly arranged on the circulating pump 5, the temperature sensing unit 61 and the transmission shaft 64 are arranged in the communication sleeve 62, and the communication sleeve 62, the temperature sensing unit 61 and the transmission shaft 64 are all in cylindrical shape. A sealing ring corresponding to the transmission shaft 64 is arranged in the communication sleeve 62. It should be further noted that the temperature sensing unit 61 can be arranged in the transmission shaft 64, so as to drive the transmission shaft 64 to extend gradually according to the change of the temperature. Therefore, the transmission shaft 64 is composed of two groups of pipes which are sleeved with each other, and a limiting clamping pin is arranged in the two groups of pipes to provide radial resistance, so that the power can be normally transmitted to the circulating pump 5 after the driven unit 63 arranged on the transmission shaft 64 is clamped with the meshing tooth plate 311.

[0057] In use, when the photovoltaic power generation mechanism 2 is directly irradiated by sunlight, the photovoltaic power generation mechanism 2 generates electric quantity and supplies the electric quantity to the cooling fan 3 to drive the cooling fan 3 to operate. The cooling fan 3 draws the air at the top and discharges the air from the air outlet at both sides of the charging pile 01 from top to bottom, so as to drive the air circulation in the charging pile 01 to achieve the purpose of cooling. When the overall ambient temperature rises, the temperature in the charging pile 01 cannot be further reduced through air circulation, and the temperature sensing adjusting mechanism 6 arranged in the charging pile 01 detects that the temperature exceeds a certain threshold value. The temperature sensing unit 61 drives the transmission shaft 64 to extend, so that the driven unit 63 is engaged with the meshing tooth plate 311. The circulating pump 5 is driven by the cooling fan 3 to operate to draw the circulating liquid in the cooling box 1 into the threaded exchange pipe 8 to exchange heat with the charging pile 01, so as to reduce the temperature in the charging pile 01.

[0058] The principle of the above is that the underground temperature is relatively low compared with the ground temperature. The circulating liquid is stored in the underground low-temperature environment. When the ground temperature is high, the circulating liquid is drawn into the charging pile 01 to exchange heat, so as to reduce the temperature in the charging pile 01, and then the circulating liquid reenters the cooling box 1 in the underground to reduce the temperature, so as to maintain the temperature in the charging pile 01.

[0059] Further need to explain is that, in order to ensure the normal operation of the charging pile 01 in the case of extremely high temperature weather, the heat dissipation fin 4 is further provided on the charging pile 01;

[0060] The heat dissipation fin 4 is composed of a plurality of groups of vertically equidistantly arranged corrugated metal sheets, the heat dissipation fin 4 is made of copper, and the charging pile 01 is provided with a sandwich space corresponding to the heat dissipation fin 4, so as to avoid the heat dissipation fin 4 from being directly irradiated by sunlight and causing heat transfer to the inside of the charging pile 01, and at the same time, the heat dissipation fin 4 extends into the charging pile 01 for subsequent heat exchange and the purpose of rapid heat dissipation.

[0061] Specifically, the spraying mechanism 7 is further provided, which is used for spraying the circulating liquid in the cooling box 1 to the heat dissipation fin 4, and cooling the charging pile 01 by the evaporation of the circulating liquid to take away the heat in the charging pile 01;

[0062] The spraying mechanism 7 comprises a liquid discharge pipe 71 in communication with the circulating pump 5 and a spraying seat corresponding to the heat dissipation fin 4;

[0063] The spraying seat is provided with a spray opening corresponding to the gap between the corrugated metal sheets.

[0064] As shown in Figure 6 The liquid discharge pipe 71 is arranged on the communication sleeve 62, and the communication sleeve 62 is further provided with a communication pipe corresponding to the threaded exchange pipe 8, and the liquid discharge pipe 71 is arranged opposite to the communication pipe;

[0065] The transmission shaft 64 is provided with a communication hole 641 for communicating the liquid discharge pipe 71 and the communication pipe, and the communication hole 641 is arranged in a staggered manner with the liquid discharge pipe 71, so as to make the transmission shaft 64 advance under the pushing of the temperature sensing unit 61 when the temperature in the charging pile 01 rises, so that the communication hole 641 communicates the liquid discharge pipe 71 and the threaded exchange pipe 8, and part of the circulating liquid is discharged to the heat dissipation fin 4 through the spraying seat.

[0066] Through the above structure, the equipment has three states when in use to cope with different high temperature weather:

[0067] Firstly, as shown in Figure 7 The heat dissipation fan 3 operates alone, the heat dissipation fan 3 draws the air at the top and discharges it from the air outlet on both sides of the charging pile 01 from top to bottom, drives the air circulation in the charging pile 01, and achieves the purpose of cooling;

[0068] Secondly, as shown in Figure 8As shown, based on the above, when the ambient temperature rises, the internal temperature of the charging pile 01 cannot be further reduced by air circulation, and the temperature sensing adjustment mechanism 6 arranged inside the charging pile 01 detects that the temperature exceeds a certain threshold value, and the temperature sensing unit 61 drives the transmission shaft 64 to extend, so that the driven unit 63 is engaged with the meshing tooth plate 311, and the cooling fan 3 drives the circulating pump 5 to run to extract the circulating liquid in the cooling box 1 into the charging pile 01 for heat exchange, and at the same time, air cooling and heat exchange are carried out, further reducing the internal temperature of the charging pile 01.

[0069] Thirdly, as shown in Figure 9 As shown, based on the above, in the case of extremely high temperature weather, the internal temperature of the charging pile 01 reaches a critical point, and the temperature sensing adjustment mechanism 6 arranged inside the charging pile 01 detects that the temperature exceeds the critical point, and the temperature sensing unit 61 further drives the transmission shaft 64 to extend, so that the driven unit 63 and the meshing tooth plate 311 remain in the engaged state, the communication hole 641 arranged on the transmission shaft 64 communicates the liquid discharge pipe 71 and the threaded exchange pipe 8, and during the operation of the circulating pump 5, part of the circulating liquid at the outlet end of the circulating pump 5 is transported through the pipeline to the liquid discharge pipe 71, and is discharged to the cooling fins 4 through the spray seat. The circulating liquid falls on the copper cooling fins 4 and evaporates quickly, and through the principle of evaporative heat absorption, most of the heat on the surface of the cooling box 1 is taken away, and air cooling, heat exchange and water cooling are carried out at the same time, achieving the purpose of rapid cooling.

[0070] In the above, the operating temperature in the first state is 25-35℃, the operating temperature in the second state is 36-55℃, and the operating temperature threshold in the third state is above 56℃.

[0071] It should be noted that the cooling fan 3 includes a top cover 33 arranged on the top of the charging pile 01, and the top cover 33 is provided with an air inlet hole, wherein a dust screen is arranged on the air inlet hole, and a power unit 32 is arranged in the middle of the top cover 33, and the output end of the power unit 32 extends into the charging pile 01 and is provided with a blower fan blade 31.

[0072] In this application, the circulating liquid in the cooling box 1 is water, and a water supplement pipe and a water level monitoring unit are arranged in the cooling box 1 to maintain the water level in the cooling box 1.

[0073] It should be noted that the driven unit 63 and the meshing tooth plate 311 are two groups of transmission discs arranged oppositely, and the two groups of transmission discs are provided with connecting clutches that engage with each other.

[0074] In order to further improve the cooling effect, the charging pile 01 is provided with a threaded exchange pipe 8, and the number of the threaded exchange pipe 8 is multiple and is communicated with the outlet of the circulating pump 5.

[0075] The other end of the threaded exchange tube 8 is connected to the liquid outlet pipe 12 so as to be discharged into the cooling box 1 through the liquid outlet pipe 12 after the heat exchange is completed.

[0076] In the present application, the temperature sensing unit 61 includes a temperature sensing unit, an electric push rod and a controller. The temperature sensing unit is used to obtain the internal temperature of the charging pile 01. The controller is used to control the electric push rod to extend to different degrees according to the internal temperature range of the charging pile 01, so as to drive the circulation pump 5 to operate or to operate synchronously with the spraying mechanism 7. Among them, the temperature sensing unit can be multiple groups and distributed at different core positions of the charging pile 01. The temperature sensor and the controller can be connected via wireless signals. At the same time, the temperature sensing unit 61 also includes related control circuits such as power supply. This part of the structure is a common technical means in the prior art, so it is not explained and described in detail in this application.

[0077] At the same time, the controller also has a timer, which starts timing when the temperature sensing unit 61 is triggered to extend to the maximum extent. After the timing ends, the feedback signal is transmitted through the controller to control the temperature sensing unit 61 to retract, thereby achieving the purpose of controlling the spraying time.

[0078] Another embodiment that needs to be explained is as follows: Figures 8-9 As shown, the temperature sensing unit 61 can also be made of a spiral metal, which can be a metal material with a large thermal expansion coefficient, such as cadmium, zinc or related alloy materials. When the temperature changes, it will expand and push the connecting sleeve 62 to extend progressively.

[0079] It should be further supplemented that the driven unit 63 is sleeved on the end of the transmission shaft 64. A clamping structure 65 corresponding to the transmission shaft 64 is provided in the driven unit 63. A resistance spring 631 is sleeved on the transmission shaft 64 to resist the driven unit 63. The resistance spring 631 is used to ensure that the driven unit 63 is engaged with the meshing gear plate 311, so that the transmission shaft 64 can be further extended.

[0080] The clamping structure 65 includes a clamping pin provided at the end of the transmission shaft 64 and a sliding groove provided inside the driven unit 63;

[0081] The misalignment distance between the communication hole 641 and the drain pipe 71 is equal to the length of the chute, so that the communication hole 641 can correspond to the drain pipe 71 when the transmission shaft 64 is progressively advanced;

[0082] The above-mentioned structural arrangement ensures that the transmission shaft 64 can be further advanced after the driven unit 63 is engaged with the meshing tooth plate 311 , so that the communicating hole 641 provided on the transmission shaft 64 is in communication with the drain pipe 71 .

[0083] It should be noted that if the embodiments of the present application involve directionality indication (such as up, down, left, right, front, back, etc.), the directionality indication is only used to explain the relative position relationship, movement condition, etc. between components in a certain specific posture (as shown in the drawings), and if the specific posture changes, the directionality indication also changes accordingly.

[0084] In addition, if the embodiments of the present application involve descriptions such as "first", "second", etc., the descriptions of "first", "second", etc. are only for description purposes and cannot be understood as indicating or implying the relative importance of the indicated technical features or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first", "second" can explicitly or implicitly include at least one of the features. In addition, the technical solutions of each embodiment can be combined with each other, but it must be based on the realization of a person skilled in the art, and when the combination of technical solutions contradicts each other or cannot be realized, it should be considered that the combination of technical solutions does not exist and is not within the protection scope of the present application.

[0085] In addition, "multiple" means more than two.

[0086] The above only describes the preferred embodiments of the present application and is not intended to limit the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A charging pile with an underground heat dissipation structure, characterized in that: include: Charging pile (01); A cooling box (1), the cooling box (1) being buried in the ground below the charging pile (01), the cooling box (1) being filled with circulating liquid, the cooling box (1) being provided with a liquid inlet pipe (11) and a liquid outlet pipe (12) extending into the interior of the charging pile (01), and the cooling box (1) being provided with a threaded exchange tube (8) for heat exchange; A photovoltaic power generation mechanism (2), the photovoltaic power generation mechanism (2) being mounted on top of the charging pile (01); a heat dissipation fan (3), the heat dissipation fan (3) being arranged on the top of the charging pile (01) and being electrically connected to the photovoltaic power generation mechanism (2), the heat dissipation fan (3) dissipating heat from the interior of the charging pile (01), a blower blade (31) being arranged at the output end of the heat dissipation fan (3), and a meshing tooth plate (311) being arranged in the center of the blower blade (31); A circulation pump (5), the circulation pump (5) being in communication with the liquid inlet pipe (11) and the liquid outlet pipe (12) for driving the circulation of the internal circulating liquid of the cooling box (1); A temperature sensing and regulating mechanism (6), wherein the temperature sensing and regulating mechanism (6) is arranged in the charging pile (01), and the temperature sensing and regulating mechanism (6) comprises a temperature sensing unit (61), a connecting sleeve (62), a transmission shaft (64) arranged in the connecting sleeve (62), and a driven unit (63) arranged at the end of the transmission shaft (64), wherein the transmission shaft (64) is in transmission connection with the circulation pump (5), and the temperature sensing unit (61) is arranged in the connecting sleeve (62) to drive the transmission shaft (64) to expand and contract according to the internal temperature change of the charging pile (01), so that the driven unit (63) at the end thereof is engaged with the meshing tooth plate (311), and then the circulation pump (5) is driven by the heat dissipation fan (3) to operate and extract the circulating fluid in the cooling box (1) into the threaded exchange tube (8) to perform heat exchange with the charging pile (01), thereby reducing the internal temperature of the charging pile (01); It also includes a heat dissipation fin (4), which is arranged outside the charging pile (01); The heat dissipation fins (4) are composed of a plurality of groups of corrugated metal sheets arranged vertically and equidistantly, and the heat dissipation fins (4) are made of copper; It also includes a spraying mechanism (7), which is used to spray the circulating liquid inside the cooling box (1) onto the heat dissipation fins (4), and remove the internal heat of the charging pile (01) through evaporation of the circulating liquid to cool it down; The spraying mechanism (7) includes a liquid discharge pipe (71) and a spraying seat corresponding to the heat dissipation fin (4); The spray seat is provided with nozzles corresponding to the gaps in the corrugated metal sheets; The drain pipe (71) is arranged on the connecting sleeve (62), and a connecting pipe corresponding to the thread exchange pipe (8) is also provided on the connecting sleeve (62), and the drain pipe (71) is arranged opposite to the connecting pipe; The transmission shaft (64) is provided with a connecting hole (641) for connecting the drain pipe (71) and the connecting pipe. The connecting hole (641) and the drain pipe (71) are staggered so that when the internal temperature of the charging pile (01) rises, the transmission shaft (64) is pushed by the temperature sensing unit (61) to advance, so that the connecting hole (641) connects the drain pipe (71) and the threaded exchange pipe (8), and discharges part of the circulating fluid to the heat dissipation fins (4) through the spray seat; The driven unit (63) is sleeved on the end of the transmission shaft (64); a clamping structure (65) corresponding to the transmission shaft (64) is provided in the driven unit (63); a resisting spring (631) that resists the driven unit (63) is sleeved on the transmission shaft (64); the resisting spring (631) is used to enable the transmission shaft (64) to further extend after the driven unit (63) is in meshing contact with the meshing tooth plate (311); The clamping structure (65) includes a clamping pin provided at the end of the transmission shaft (64) and a sliding groove provided inside the driven unit (63); The misalignment distance between the communicating hole (641) and the drainage pipe (71) is equal to the length of the chute, so that the communicating hole (641) can correspond to the drainage pipe (71) when the transmission shaft (64) is progressively advanced.

2. The charging pile with an underground heat dissipation structure according to claim 1, characterized in that: The heat dissipation fan (3) includes a top cover (33) arranged on the top of the charging pile (01), an air inlet hole is opened on the top cover (33), a power unit (32) is arranged in the center of the top cover (33), and an output end of the power unit (32) extends to the inside of the charging pile (01) and is provided with a blower blade (31).

3. The charging pile with an underground heat dissipation structure according to claim 1, characterized in that: The internal circulating liquid of the cooling box (1) is water, and a water supply pipe and a water level monitoring unit are provided in the cooling box (1) to maintain the water level inside the cooling box (1).

4. The charging pile with an underground heat dissipation structure according to claim 1, characterized in that: The driven unit (63) and the meshing tooth plate (311) are two sets of transmission discs arranged opposite to each other, and both sets of transmission discs are provided with mutually meshing connecting teeth.

5. The charging pile with an underground heat dissipation structure according to claim 1, characterized in that: The threaded exchange tubes (8) are in multiple groups and are all connected to the liquid outlet of the circulation pump (5); The other end of the threaded exchange tube (8) is in communication with the liquid outlet pipe (12) so as to discharge the liquid into the cooling box (1) through the liquid outlet pipe (12) after the heat exchange is completed.

6. The charging pile with an underground heat dissipation structure according to claim 1, characterized in that: The temperature sensing unit (61) includes a temperature sensing unit, an electric push rod, and a controller. The temperature sensing unit is used to obtain the internal temperature of the charging pile (01). The controller is used to control the electric push rod to extend to different degrees according to the internal temperature range of the charging pile (01), so as to drive the circulation pump (5) to operate or to operate synchronously with the spraying mechanism (7).

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