Spray cooling type charging pile

Abstract

The utility model relates to the technical field of charging piles, in particular to a spray cooling type charging pile. A spray cooling type charging pile comprises a heat exchanger arranged in the charging pile; the fan assembly is arranged aiming at the heat exchanger, so that airflow passes through the heat exchanger; the spraying system is used for spraying the heat exchanger; the temperature sensor is used for detecting the temperature of airflow passing through the heat exchanger, and when the temperature of the airflow is larger than the condensation temperature of a working medium in the heat exchanger, the spraying system works. The heat exchanger is assembled in the charging pile through a partition plate, the partition plate divides the charging pile into an internal heat exchange space and an external heat exchange space, the heat exchanger comprises an evaporation section and a condensation section, the evaporation section is located in the internal heat exchange space, and the condensation section is located in the external heat exchange space. The technical problem that in the prior art, a heat dissipation system of a charging pile is poor in heat dissipation effect when the environment temperature is high is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of charging piles, and in particular to a spray cooling type charging pile. Background Art

[0002] In the prior art, electric vehicles are increasingly used, and when a car is out of power, it needs to be charged. The charging process is to convert the AC power in the power grid into the DC power required by the electric vehicle. During the conversion process, it is not possible to achieve complete conversion, and some losses are consumed in the form of heat. In addition, other components will also generate heat during operation. At this time, a heat dissipation system is needed to transfer the generated heat away, so that the charging pile can work in a reliable and stable environment.

[0003] In order to transfer the heat inside the charging pile, the prior art has adopted heat dissipation methods such as air cooling and water cooling. For example, the document with application number CN202122620932.4 discloses a heat dissipation system and a charging pile, which is an air cooling heat dissipation method for charging piles, and specifically discloses: including a shell, a housing space is provided in the shell, internal and external air inlets and internal and external air outlets are formed on the shell, a heat exchanger and a fan are arranged in the shell, and an internal air flow channel and an external air flow channel are formed in the heat exchanger. Under the action of the fan, the hot air flows through the internal air inlet into the internal air flow channel of the heat exchanger, and the external air flows through the external air inlet into the external air flow channel in the heat exchanger to perform heat exchange, thereby achieving the effect of heat dissipation of the hot air flow. After heat dissipation, the hot air flows out of the shell through the internal air outlet, and the external air flows out of the shell through the external air outlet. During the entire heat dissipation process, the hot air flow and the external air flow are completely isolated in the shell and will not be mixed together. The above document discloses that the heat is dissipated by air cooling, and a fan is used to bring the hot air flow in the shell out of the charging pile shell. However, in order to increase the wind speed, more fans are often used, which produces greater noise.

[0004] In order to improve the heat dissipation efficiency and reduce the heat dissipation noise, a heat dissipation method combining heat pipe heat dissipation on the basis of the existing air cooling heat dissipation has emerged in the prior art. For example, the document with application number CN201911093191.X discloses a charging pile for new energy vehicles with heat dissipation function, which is a heat dissipation method combined with heat pipes on the basis of air cooling heat dissipation, and specifically discloses: it includes a charging pile body, an air inlet tube is fixed on the top of the charging pile body, a sealing plate is fixed on the lower end of the inner side of the air inlet tube, an electric motor is fixed to the middle part of the inner side of the air inlet tube through a bracket, and a fan blade is arranged at the lower end of the motor to facilitate the natural wind to flow better to the inside of the charging pile body, a heat exchange tube is fixed on the upper end of the inner side of the air inlet tube, and a water inlet and a water outlet are respectively arranged at both ends of the heat exchange tube to facilitate the external cold water pipe to cool down the natural wind, and the upper end of the outer wall of the air inlet tube is integrated The shape of the charging pile has a protrusion, and a dust filter is arranged on the protrusion. A connecting screw ring is integrally formed at the lower end of the dust filter, and the connecting screw ring is connected to the air inlet pipe by a threaded connection, so as to better install and fix the dust filter. An air distribution guide plate is fixed to the inner wall of the charging pile body, and a cavity is arranged on the inner side of the air distribution guide plate. A cold air outlet is opened on one side wall of the cavity, so as to make the natural wind cool the electronic components inside the charging pile body more evenly. The cold air outlet passes through one side surface of the air distribution guide plate, and a hose is arranged on the top of the air distribution guide plate, and the other end of the hose passes through the sealing plate and is connected with the inside of the air inlet pipe, so as to better make the natural wind flow to the inner side of the air distribution guide plate, and a base mechanism is arranged at the lower end of the charging pile body.

[0005] The above-mentioned document discloses a heat pipe heat dissipation method based on air cooling, which can reduce the temperature of the charging pile while reducing the pile noise. However, the normal operation of the heat pipe is limited by the ambient temperature. When the ambient temperature is high, the working fluid in the heat pipe completely evaporates and the heat pipe fails. Utility Model Content

[0006] In order to solve the technical problem in the prior art that the heat dissipation effect of the heat dissipation system of the charging pile is poor when the ambient temperature is high, the utility model provides a spray cooling charging pile to solve the above technical problem.

[0007] The technical solution adopted by the utility model is as follows:

[0008] The utility model provides a spray cooling charging pile, comprising:

[0009] A heat exchanger, wherein the heat exchanger is arranged in the charging pile;

[0010] A fan assembly, the fan assembly being arranged for the heat exchanger to allow air flow to pass through the heat exchanger;

[0011] a spray system, wherein the spray system sprays the heat exchanger;

[0012] The temperature sensor is used to detect the temperature of the air flow passing through the heat exchanger. When the air flow temperature is greater than the condensation temperature of the working medium in the heat exchanger, the spray system works.

[0013] According to one embodiment of the utility model, the heat exchanger is assembled in the charging pile through a partition, and the partition divides the charging pile into an internal heat exchange space and an external heat exchange space. The heat exchanger includes an evaporation section and a condensation section. The evaporation section is located in the internal heat exchange space, and the condensation section is located in the external heat exchange space.

[0014] According to an embodiment of the utility model, the fan assembly includes an internal fan, and the internal fan is arranged in the internal heat exchange space. The heat in the internal heat exchange space is drawn by the internal fan to the evaporation section of the heat exchanger.

[0015] According to an embodiment of the present utility model, the number of the internal fans is 1-10, and the internal fans are arranged on a horizontal side of the evaporation section of the heat exchanger.

[0016] According to one embodiment of the utility model, the internal heat exchange space is located below the external heat exchange space, a module is installed in the internal heat exchange space, the module is located below the evaporation section of the heat exchanger, and there is a gap between both sides of the module and the inner wall of the charging pile.

[0017] According to one embodiment of the utility model, the fan assembly includes an external fan, which is arranged in an external heat exchange space, and the air heated by the condensing section of the heat exchanger flows out of the charging pile under the action of the external fan.

[0018] According to an embodiment of the present invention, the external fan includes an air inlet fan and an air outlet fan, and the air inlet fan and the air outlet fan are respectively located on two horizontal sides of the condensing section of the heat exchanger.

[0019] According to an embodiment of the present utility model, the temperature sensor is located between the air inlet fan and the condensing section of the heat exchanger.

[0020] According to one embodiment of the utility model, the spray system includes an atomizer and a water tank, the atomizer sprays the condensing section of the heat exchanger, the water tank supplies water to the atomizer, and a desiccant plate is provided on the water tank, and the moisture collected by the desiccant plate can be stored in the water tank.

[0021] According to one embodiment of the utility model, the water tank includes an internal water tank and an external water tank, the internal water tank is located above the partition, the internal water tank supplies water to the atomizer, and an internal moisture absorption plate is arranged on the top of the internal water tank; the external water tank is located on the outer top of the charging pile, and an external moisture absorption plate is arranged on the top of the external water tank, and the external water tank and the internal water tank are connected through a drainage pipe.

[0022] Based on the above technical solution, the technical effects that can be achieved by the utility model are:

[0023] The spray cooling charging pile of the utility model is provided with a heat exchanger to dissipate heat inside the charging pile. A temperature sensor and a spray system are also provided. The temperature sensor detects the temperature of the airflow passing through the heat exchanger. When the airflow temperature is higher than the condensation temperature of the working medium in the heat exchanger, the spray system sprays the heat exchanger. In this way, the ambient temperature is lowered. When the ambient temperature is high, the normal operation of the heat exchanger can still be guaranteed, thereby improving the thermal management performance of the charging pile.

[0024] In the spray cooling charging pile of the utility model, the heat exchanger is assembled in the charging pile through a partition. The partition can, on the one hand, play a role in supporting the heat exchanger, and on the other hand, the partition can separate the charging pile into an internal heat exchange space and an external heat exchange space. The evaporation section of the heat exchanger is located in the internal heat exchange space, and the condensation section of the heat exchanger is located in the external heat exchange space. The evaporation section and the condensation section of the heat exchanger are separated to ensure the efficient operation of the heat exchanger.

[0025] The fan assembly of the spray cooling charging pile of the utility model includes an internal fan and an external fan. The internal fan is used to draw the heat of the internal heat exchange space to the evaporation section of the heat exchanger to reduce the temperature inside the charging pile; the external fan is used to draw the air heated by the condensation section of the heat exchanger out of the charging pile to realize the condensation and reflux of the working medium in the heat exchanger.

[0026] The utility model discloses a spray cooling charging pile, wherein the spray system comprises an atomizer and a water tank, wherein the water tank comprises an internal water tank and an external water tank, wherein the internal water tank supplies water to the atomizer, and the external water tank is placed on the outer top of the charging pile, and the external water tank can be manually filled with water and then flowed to the internal water tank through a drainage pipe, so as to facilitate the filling of water to the internal water tank; in addition, a desiccant plate is arranged on the top of both the internal water tank and the external water tank, and the external desiccant plate on the external water tank can absorb moisture in the external environment and then flow into the external water tank; the internal desiccant plate on the internal water tank can absorb moisture in the external heat exchange space and moisture sprayed by the atomizer and falling on the desiccant plate and then flow into the internal water tank. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 This is a schematic diagram of the structure of the spray cooling charging pile of the utility model;

[0028] Figure 2 This is the front view of the spray-cooled charging pile;

[0029] Figure 3 This is the working principle diagram of the spray cooling charging pile;

[0030] In the figure: 1-heat exchanger; 11-evaporation section; 12-condensation section; 2-fan assembly; 21-internal fan; 22-external fan; 221-inlet fan; 222-outlet fan; 3-spray system; 31-atomizer; 32-water tank; 321-internal water tank; 3211-internal moisture absorption plate; 322-external water tank; 3221-external moisture absorption plate; 4-temperature sensor; 5-partition; 6-module; 7-drain pipe; 10-charging pile. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0032] like Figure 1-3 As shown, this embodiment provides a spray-cooled charging pile, including a heat exchanger 1, a fan assembly 2, a spray system 3 and a temperature sensor 4. The heat exchanger 1 is assembled in the charging pile 10, the fan assembly 2 is used to pull the airflow through the heat exchanger 1, and the temperature sensor 4 is used to detect the temperature of the airflow passing through the heat exchanger 1. When the airflow temperature is greater than the condensation temperature of the working medium in the heat exchanger 1, the spray system 3 sprays the heat exchanger 1. In this way, when the ambient temperature is high, the heat exchanger 1 is sprayed through the spray system 3, and then under the action of the fan assembly 2, the heat exchanger 1 can maintain normal operation.

[0033] The heat exchanger 1 is a heat pipe heat exchanger, which includes fins, partitions and heat pipes. The heat exchanger 1 is divided into an evaporation section 11 and a condensation section 12. The heat exchanger 1 is assembled in the charging pile 10 through the partition 5. The partition 5 is fixed in the charging pile 10, and the charging pile 10 is divided into an internal heat exchange space and an external heat exchange space. The heat exchanger 1 is supported by the partition 5. The evaporation section 11 of the heat exchanger 1 is located in the internal heat exchange space. The heat generated by the module 6 in the charging pile 10 reaches the evaporation section 11 of the heat exchanger 1. The evaporation section 11 of the heat exchanger 1 is used to evaporate and cool the internal heat exchange space to realize the internal heat exchange cycle; the condensation section 12 of the heat exchanger 1 is located in the external heat exchange space. The cold air reaches the condensation section 12 of the heat exchanger 1, and the working medium in the heat exchanger condenses and refluxes. The air heated by the condensation section 12 enters the environment to realize the external heat exchange cycle.

[0034] As a preferred technical solution of this embodiment, the internal heat exchange space is located below the external heat exchange space, the internal heat exchange space is larger than the external heat exchange space, and the module 6 in the charging pile 10 is placed in the internal heat exchange space. Preferably, the module 6 is placed directly below the evaporation section 11 of the heat exchanger 1, the module 6 is placed horizontally, there are gaps between both sides of the module 6 and the inner wall of the charging pile 10, and the air outlet of the module 6 is 0 to 1 meter away from the wall of the charging pile 10, so that cold air can enter the module 6 through the inlet on one side of the module 6 to cool the module 6, and the hot air generated by the module 6 flows out of the module 6 through the other side.

[0035] As a preferred technical solution of this embodiment, the fin material of the heat exchanger 1 includes but is not limited to one or more of high thermal conductivity materials such as copper, aluminum, and carbon. The partition 5 plays a supporting role, and its material is but is not limited to one or more of high strength materials such as stainless steel and iron. The heat pipe type of the heat exchanger 1 includes but is not limited to one or more of gravity heat pipes, capillary heat pipes, etc., and the heat pipe shape includes but is not limited to one or more of cylindrical, prism, etc.

[0036] The fan assembly 2 is provided for the heat exchanger 1, and is used to draw airflow through the heat exchanger 1. The fan assembly 2 includes an internal fan 21 and an external fan 22, wherein the internal fan 21 is provided in the internal heat exchange space and is provided for the evaporation section 11 of the heat exchanger 1, and the external fan 22 is provided in the external heat exchange space and is provided for the condensation section 12 of the heat exchanger 1.

[0037] As a preferred technical solution of this embodiment, 1 to 10 internal fans 21 are provided, and the internal fans 21 are arranged on the horizontal side of the evaporation section 11 of the heat exchanger 1. The axial direction of the internal fans 21 is horizontal, and its wind direction is consistent with the air outlet direction of the module 6. Under the action of the internal fans 21, the heat generated by the module 6 is pulled by the fan of the module 6 and the internal fans 21 to reach the evaporation section 11 of the heat exchanger 1 for cooling, forming cold air that flows back to the inlet of the module 6, realizing an internal heat exchange cycle. Preferably, the total flow of the internal fans 21 is greater than the total flow of the fan of the module 6.

[0038] As a preferred technical solution of this embodiment, the external fan 22 includes an air inlet fan 221 and an air outlet fan 222, and the air inlet fan 221 and the air outlet fan 222 are respectively located on both horizontal sides of the condensing section 12 of the heat exchanger 1. Preferably, the number of air inlet fans 221 is set to 1-10, and the total flow rate of all air inlet fans 221 is 0-1000 m3 / h; the number of air outlet fans 222 can also be set to 1-10, and the number of air inlet fans 221 and the number of air outlet fans 222 are preferably the same, so that the total flow rate of the air inlet fans 221 and the total flow rate of the air outlet fans 222 are consistent, and the air flow rate in and out of the condensing section 12 of the heat exchanger 1 is consistent. Preferably, the air inlet fan 221 and the air outlet fan 222 can be arranged directly opposite to each other, and the arrangement method is also the same. The air inlet fan 221 and the air outlet fan 222 can be arranged in a straight line or in an array. The air inlet fan 221 and the air outlet fan 222 are respectively arranged on the opposite side walls of the charging pile 10, and are used to draw the airflow outside the charging pile 10 to the condensing section 12 of the heat exchanger 1 to cool it.

[0039] The temperature sensor 4 is arranged in the external heat exchange space, and is used to detect the temperature of the external air flow passing through the condensation section 12 of the heat exchanger 1. If it is detected that the temperature of the external air flow is higher than the condensation temperature of the working medium of the heat exchanger 1, the spray system 3 is turned on.

[0040] As a preferred technical solution of this embodiment, the temperature sensor 4 is located between the condensing section 12 of the heat exchanger 1 and the air inlet fan 221. Preferably, the temperature sensor 4 is arranged closer to the air inlet fan 221 to detect the temperature of the external air flow entering the external heat exchange space under the traction of the external fan 22.

[0041] The spray system 3 sprays the heat exchanger 1. The spray system 3 includes an atomizer 31 and a water storage tank 32. The atomizer 31 sprays the condensation section 12 of the heat exchanger 1, and the water storage tank 32 supplies water to the atomizer 31.

[0042] As a preferred technical solution of this embodiment, the water tank 32 includes an internal water tank 321 and an external water tank 322. The internal water tank 321 is located inside the charging pile 10, and the external water tank 322 is located outside the charging pile 10. The external water tank 322 is connected to the internal water tank 321 through the drain pipe 7. When adding water, water can be added to the external water tank 322. The water in the external water tank 322 can flow into the internal water tank 321 through the drain pipe 7 for the atomizer 31 to spray. Specifically, the internal water tank 321 is arranged above the partition 5, and the external water tank 322 is located at the outer top of the charging pile 10. The drain pipe 7 is arranged vertically. The water in the external water tank 322 can flow into the internal water tank 321 through the drain pipe 7 under the action of gravity. The volume of the external water tank 322 is 0-1 cubic meters.

[0043] As a preferred technical solution of this embodiment, the number of atomizers 31 can be set to 1-50, and the atomization speed of the atomizer 31 is 0-100 L / min.

[0044] As a preferred technical solution of this embodiment, a moisture absorption plate is also provided on the water storage tank 32 to collect surrounding moisture. Specifically, an internal moisture absorption plate 3211 is provided on the top of the internal water storage tank 321. The internal moisture absorption plate 3211 is completely attached to the top wall of the internal water storage tank 321 and can be used to collect moisture in the environment and moisture dropped after atomization by the atomizer 31. A notch is left at the top of the internal water storage tank 321. The moisture absorbed by the internal moisture absorption plate 3211 can be collected into the internal water storage tank 321 through the notch. An external moisture absorption plate 3221 is provided on the top of the external water storage tank 322. The external moisture absorption plate 3221 is completely attached to the top wall of the external water storage tank 322 and can be used to collect moisture in the environment. A notch is left at the top of the external water storage tank 322. The moisture absorbed by the external moisture absorption plate 3221 can be collected into the external water storage tank 322 through the notch.

[0045] As a preferred technical solution of this embodiment, a buoyancy valve is provided at the interface between the top of the internal water storage tank 321 and the drain pipe 7, which can control the on and off of the water flow according to the change of the water level. The internal water storage tank 321 is arranged with a water level alarm device, and when the water level is too low, an alarm is triggered to remind the operation and maintenance personnel to add water.

[0046] Based on the above structure, the working principle of the spray cooling charging pile of this embodiment is:

[0047] The internal heat exchange system is isolated from the external environment to prevent the humidity and dust in the environment from damaging the equipment. The system mainly includes module 6, internal fan 21 and evaporation section 11 of heat exchanger 1. The heat generated by module 6 reaches evaporation section 11 of heat exchanger 1 through the traction of the module's own fan and internal fan 21, and is cooled to form cold air that flows back to the inlet of module 6, completing the internal heat exchange cycle.

[0048] The external heat exchange system is in direct contact with the external environment. In this system, the air inlet fan 221 of the external fan 22 drives the air in the environment to the temperature sensor 4. When the air temperature is lower than the condensation temperature of the working medium of the heat exchanger 1, the program instruction is not triggered, and the cold air directly reaches the condensation section 12 of the heat exchanger 1, and the working medium in the heat exchanger 1 condenses and refluxes. The air heated by the condensation section 12 of the heat exchanger 1 enters the environment through the air outlet fan 222 of the external fan 22, completing the external heat exchange cycle. When the temperature sensor 4 detects that the air temperature is greater than the condensation temperature of the working medium of the heat exchanger 1, the atomizer 31 starts to work. Part of the atomized water vapor is carried by the air and lost to the environment, and part of it accumulates and condenses to form droplets that fall on the internal moisture absorption plate 3211 and are collected again and enter the internal water storage tank 321.

[0049] In the present utility model, unless otherwise clearly specified and limited, terms such as "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal connection of two elements or the interaction relationship between two elements.

Claims

1. A spray cooling charging pile, characterized in that: include: A heat exchanger (1), the heat exchanger (1) being arranged in a charging pile (10), the heat exchanger (1) being assembled in the charging pile (10) via a partition (5), the heat exchanger (1) comprising an evaporation section (11) and a condensation section (12); A fan assembly (2), the fan assembly (2) being arranged for the heat exchanger (1) so as to allow air flow to pass through the heat exchanger (1); A spray system (3), wherein the spray system (3) sprays the heat exchanger (1); A temperature sensor (4), the temperature sensor (4) is used to detect the temperature of the air flow passing through the heat exchanger (1), and when the air flow temperature is greater than the condensation temperature of the working medium in the heat exchanger (1), the spray system (3) works; The spray system (3) comprises an atomizer (31) and a water storage tank (32); the atomizer (31) sprays the condensing section (12) of the heat exchanger (1); the water storage tank (32) supplies water to the atomizer (31); a moisture absorption plate is provided on the water storage tank (32); and moisture collected by the moisture absorption plate can be stored in the water storage tank (32).

2. A spray cooling charging pile according to claim 1, characterized in that: The partition (5) divides the charging pile (10) into an internal heat exchange space and an external heat exchange space, the evaporation section (11) is located in the internal heat exchange space, and the condensation section (12) is located in the external heat exchange space.

3. A spray cooling charging pile according to claim 2, characterized in that: The fan assembly (2) comprises an internal fan (21), wherein the internal fan (21) is arranged in the internal heat exchange space, and the heat in the internal heat exchange space is drawn by the internal fan (21) to reach the evaporation section (11) of the heat exchanger (1).

4. A spray cooling charging pile according to claim 3, characterized in that: The number of the internal fans (21) is 1 to 10, and the internal fans (21) are arranged on a horizontal side of the evaporation section (11) of the heat exchanger (1).

5. A spray cooling charging pile according to any one of claims 2 to 4, characterized in that: The internal heat exchange space is located below the external heat exchange space. A module (6) is installed in the internal heat exchange space. The module (6) is located below the evaporation section (11) of the heat exchanger (1). There are gaps between both sides of the module (6) and the inner wall of the charging pile (10).

6. A spray cooling charging pile according to any one of claims 2-3, characterized in that: The fan assembly (2) comprises an external fan (22), and the external fan (22) is arranged in an external heat exchange space, and the air heated by the condensing section (12) of the heat exchanger (1) flows out of the charging pile (10) under the action of the external fan (22).

7. A spray cooling charging pile according to claim 6, characterized in that: The external fan (22) comprises an air inlet fan (221) and an air outlet fan (222), and the air inlet fan (221) and the air outlet fan (222) are respectively located on two horizontal sides of the condensing section (12) of the heat exchanger (1).

8. The spray cooling charging pile according to claim 7, characterized in that: The temperature sensor (4) is located between the air inlet fan (221) and the condensing section (12) of the heat exchanger (1).

9. The spray cooling charging pile according to claim 1, characterized in that: The water storage tank (32) comprises an internal water storage tank (321) and an external water storage tank (322); the internal water storage tank (321) is located above the partition (5); the internal water storage tank (321) supplies water to the atomizer (31); an internal moisture absorption plate (3211) is provided on the top of the internal water storage tank (321); the external water storage tank (322) is located on the outer top of the charging pile (10); an external moisture absorption plate (3221) is provided on the top of the external water storage tank (322); the external water storage tank (322) and the internal water storage tank (321) are connected via a drainage pipe (7).

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