External cooling and heat dissipation structure of charging pile

Abstract

The utility model discloses an external cooling and heat dissipation structure of a charging pile, which comprises a machine body protection shell with a base, air outlets for exhausting air are respectively formed in two sides of the machine body protection shell, and a double-layer sleeve capable of conveying cooling liquid and air at the same time is arranged on the outer side of the machine body protection shell. An air supply assembly communicating with the machine body protection shell is installed on one side of the double-layer sleeve and conveys air into the machine body protection shell, a water tank is installed on the lower side of the double-layer sleeve, and a liquid supply assembly communicating with the double-layer sleeve is installed at the upper end of the water tank. According to the external cooling and heat dissipation structure of the charging pile provided by the utility model, through the structural design of the double-layer sleeve and the heat exchange between the cooling liquid and the air in the sleeve, the temperature of the air flow fed into the charging pile is reduced, and compared with a single air cooling scheme, the heat dissipation effect is improved in a high-temperature environment; the problem that the heat dissipation effect is reduced due to the fact that high-temperature air directly enters the machine body protection shell is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of charging pile cooling, in particular to an external cooling and heat dissipation structure of a charging pile. Background Art

[0002] Charging piles are specialized devices used to replenish energy for electric vehicles (EVs), similar to "car charging stations." Through power conversion and control modules, they convert AC power from the grid into DC (DC piles) or directly provide AC power (AC piles) to charge the vehicle's batteries. They are critical infrastructure for the widespread adoption of EVs.

[0003] Existing charging piles mainly rely on air cooling for heat dissipation, using fans to draw external air directly into the body for heat exchange. However, in high-temperature environments (especially in summer), the external air temperature is too high, resulting in a significant decrease in heat dissipation efficiency. This makes it difficult to effectively control the temperature rise of the internal components of the charging pile, which in turn affects the stability and lifespan of the equipment.

[0004] Therefore, in order to solve the above technical problems, an external cooling and heat dissipation structure of a charging pile is proposed. Utility Model Content

[0005] In view of the deficiencies in the prior art, the present invention provides an external cooling and heat dissipation structure for a charging pile, the purpose of which is to solve the above-mentioned problems.

[0006] To achieve the above purpose, the present invention provides the following technical solutions:

[0007] An external cooling and heat dissipation structure for a charging pile includes a body protective shell with a base, two sides of the body protective shell are respectively provided with exhaust vents for exhausting air, and further includes:

[0008] A double-layer sleeve that can simultaneously transport coolant and air is provided on the outside of the body protective shell. An air supply component connected to the body protective shell is installed on one side of the double-layer sleeve to transport air into the body protective shell. A water tank is installed on the lower side of the double-layer sleeve, and a liquid supply component connected to the double-layer sleeve is installed on the upper end of the water tank to transport coolant into the double-layer sleeve.

[0009] Preferably, the double-layer casing is fixed to the outside of the body protective shell through an outer tube to support the double-layer casing as a whole.

[0010] Preferably, the water tank is fixed to the base through a bracket at the bottom, and a cooling device is installed at one end of the water tank, with its cooling end close to the inside of the water tank and its heat release end placed on the side away from the water tank;

[0011] A liquid outlet pipe is installed at the bottom of the water tank, and a liquid inlet pipe is installed at one end of the water tank away from the liquid outlet pipe. Both the liquid outlet pipe and the liquid inlet pipe are connected to the interior of the water tank and have built-in valves to supply and discharge the coolant in the water tank.

[0012] Preferably, the double-layer casing further comprises an outer tube for conveying coolant and an inner tube for conveying air, wherein the inner tube separates the air from the coolant;

[0013] The inner tube is fixed to the inner wall of the outer tube through a plurality of support rods uniformly arranged on the outside.

[0014] Preferably, one end of the inner tube is connected to and fixed with an air intake pipe extending to the outside of the outer tube, and the air intake pipe is detachably provided with several dustproof nets at the inlet of the double-layer sleeve away from the air intake pipe. The outside air passes through the dustproof nets and enters the inner tube through the air intake pipe.

[0015] Preferably, the apertures of the corresponding dust-proof nets decrease in sequence from outside to inside in the air inlet pipe, so as to intercept dust particles layer by layer.

[0016] Preferably, the air supply assembly also includes an air supply pipe connected to the other end of the inner tube, the air supply pipe extends to the outside of the double-layer sleeve, and an air extraction device is installed at the end of the air supply pipe away from the double-layer sleeve. The air supply pipe corresponds to the air inlet end of the air extraction device, and the air outlet end of the air extraction device is installed with an exhaust pipe connected to the interior of the body protective shell. After the air in the inner tube is drawn into the air extraction device through the air supply pipe, it is transported to the body protective shell through the exhaust pipe.

[0017] Preferably, the liquid delivery component also includes a liquid pumping device installed at the upper end of the water tank, the water inlet end of the liquid pumping device is connected to a suction pipe extending to the inside of the water tank, and the water outlet end of the liquid pumping device is connected to a drainage cover connected to the outer tube. The water tank is sucked into the liquid pumping device through the suction pipe, and the coolant is transported to the outer tube through the drainage cover.

[0018] Preferably, one end of the inner tube close to the drain cover is fixedly connected with a plug to seal a port of the inner tube close to the drain cover.

[0019] Preferably, one end of the outer tube is fixedly connected to a drainage pipe extending into the interior of the water tank, so that liquid circulation is formed among the water tank, the liquid delivery component and the outer tube through the drainage pipe.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] The utility model provides an external cooling and heat dissipation structure for a charging pile. Through a double-layer casing structure design, the heat exchange between the coolant and the air in the casing is utilized to reduce the temperature of the airflow entering the charging pile. Compared with a single air cooling solution, the heat dissipation effect is improved in high-temperature environments, and the problem of high-temperature air directly entering the protective shell of the body, which would reduce the heat dissipation effect, is avoided.

[0022] The coolant in the outer tube can be discharged into the water tank through the drain pipe, so that the coolant forms a closed loop circulation between the water tank, the liquid delivery component and the outer tube, thereby eliminating the need for repeated and frequent replacement and filling of the coolant. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a schematic diagram of the overall structure of the utility model;

[0024] Figure 2 This is a schematic diagram of the overall structure of the water tank of the utility model;

[0025] Figure 3 This is a schematic diagram of the cross-sectional structure of the utility model;

[0026] Figure 4 This is a schematic diagram of the overall structure of the liquid delivery component of the utility model;

[0027] Figure 5 This is a schematic diagram of the cross-sectional structure of the double-layer casing of the utility model;

[0028] Figure 6 This is a schematic diagram of the overall structure of the air supply component of the present utility model.

[0029] In the figure: 10, base; 20, body protective shell; 21, exhaust port; 30, double-layer casing; 31, outer tube; 32, inner tube; 301, support rod; 311, drain pipe; 321, air inlet pipe; 322, dust screen; 323, plug; 40, air supply assembly; 41, air supply pipe; 42, air extraction device; 43, exhaust pipe; 50, water tank; 51, bracket; 52, cooling device; 53, liquid outlet pipe; 54, liquid inlet pipe; 60, liquid supply assembly; 61, liquid extraction device; 62, liquid suction pipe; 63, drain cover. DETAILED DESCRIPTION

[0030] 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 embodiments described 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 making creative efforts are within the scope of protection of the present invention.

[0031] See also Figure 1The embodiment proposed in this application is: an external cooling and heat dissipation structure of a charging pile, including a body protective shell 20 with a base 10, the base 10 is precast concrete, and is used to install the overall positioning of the charging pile, and exhaust vents 21 are respectively opened on both sides of the body protective shell 20 to facilitate the discharge of air in the body protective shell 20, thereby dissipating heat from the inside of the charging pile, wherein various components, devices and modules required for the charging pile are installed inside the body protective shell 20, and reference can be made to the existing technology, so it will not be described in detail.

[0032] See also Figure 2 、 Figure 3 、 Figure 4 、 Figure 5 and Figure 6 A double-layer sleeve 30 is provided on the outside of the body protective shell 20. The double-layer sleeve 30 can transport coolant and air at the same time. A plurality of outer tubes 31 are provided on the outside of the double-layer sleeve 30. The double-layer sleeve 30 is fixed to the outside of the body protective shell 20 through the outer tube 31. The double-layer sleeve 30 is supported as a whole by the outer tube 31. An air supply component 40 connected to the body protective shell 20 is installed on one side of the double-layer sleeve 30. The air in the double-layer sleeve 30 is transported to the Inside the protective shell 20, the interior of the charging pile is cooled. A water tank 50 is installed on the lower side of the double-layer casing 30. The water tank 50 is fixed to the base 10 through a bracket 51 at the bottom. Depending on the specific situation, the bracket 51 can also be fixed to the outer part of the protective shell 20. The upper end of the water tank 50 is installed with a liquid delivery component 60 connected to the double-layer casing 30. The liquid delivery component 60 extracts the coolant in the water tank 50 and delivers it to the double-layer casing 30 to cool the air.

[0033] Specifically, the double-layer sleeve 30 includes an outer tube 31 and an inner tube 32. The inner tube 32 transports air, and the outer tube 31 transports coolant. The air and coolant are separated by the inner tube 32, and the air in the inner tube 32 is cooled by heat conduction through the contact between the air and the inner wall of the inner tube 32, and the contact between the coolant and the outer surface of the inner tube 32. In this process, the coolant absorbs the heat of the air, and the heat is conducted to the coolant, thereby achieving cooling and heat dissipation of the air in the inner tube 32. The inner tube 32 is fixed to the inner wall of the outer tube 31 by a number of support rods 301 evenly arranged on the outside, wherein gaps are reserved between adjacent different support rods 301 for air circulation. One end of the inner tube 32 is connected and fixed with an air intake pipe 321 extending to the outside of the outer tube 31. The air intake pipe 321 is also fixed to the outer tube 31 to prevent leakage in the cavity of the outer tube 31. The dust screen 322 is provided at the inlet of the double-layer sleeve 30 away from the air intake pipe 321 to block the dust in the air. In order to ensure a better dust-proof effect, the dust screen 322 can be provided with a plurality of dust screens 322, and the apertures of the corresponding dust screens 322 decrease in sequence from the outside to the inside in the air intake pipe 321, so as to isolate the dust particles from large to small in the outside air and improve the dust-proof effect. The dust screen 322 is detachable in the air intake pipe 321, and the detachable methods include but are not limited to bolts and clamping installation methods, so that the dust screen 322 can be disassembled, replaced and cleaned to maintain the dust-proof effect of the dust screen 322 and reduce the blockage caused by dust particles, thereby affecting the air circulation of the dust screen 322.

[0034] The air supply assembly 40 includes an air supply pipe 41 connected to the other end of the inner tube 32. The air supply pipe 41 extends to the outside of the double-layer sleeve 30 and is fixed to the outer tube 31 and the inner tube 32 to prevent liquid leakage in the outer tube 31 and air leakage in the inner tube 32. An air extraction device 42 is installed at one end of the air supply pipe 41 away from the double-layer sleeve 30. The air extraction device 42 is an exhaust device such as a fan. The air inlet end of the air extraction device 42 is flange-connected to the air supply pipe 41, and the air outlet end of the air extraction device 42 is installed with an exhaust pipe 43 connected to the interior of the machine body protective shell 20. The exhaust pipe 43 is fixed to the machine body protective shell 20. After the air extraction device 42 is started, the air in the inner tube 32 is extracted through the air supply pipe 41 and transported to the machine body protective shell 20 through the exhaust pipe 43.

[0035] The liquid delivery assembly 60 includes a pumping device 61 mounted on the upper end of the water tank 50. The pumping device 61 is a water pumping device such as a water pump. The water inlet end of the pumping device 61 is connected to a liquid suction pipe 62 extending into the interior of the water tank 50. The water outlet end of the pumping device 61 is connected to a liquid drain cover 63 connected to the outer tube 31. When the pumping device 61 is activated, the coolant in the water tank 50 is extracted through the liquid suction pipe 62 and delivered to the cavity formed between the outer tube 31 and the inner tube 32 through the liquid drain cover 63.

[0036] The connection modes of the liquid pumping device 61 and the liquid suction pipe 62 , and the liquid pumping device 61 and the liquid drain cover 63 all adopt the existing connection mode of the water pump and the pipeline, and the liquid drain cover 63 is flange-connected to the outer tube 31 .

[0037] Further, such as Figure 3 and Figure 5 One end of the inner tube 32 near the drain cover 63 is fixedly connected to a plug 323, and a port of the inner tube 32 near the drain cover 63 is sealed by the plug 323 to prevent the coolant in the outer tube 31 from entering the inner tube 32, causing gas-liquid mixing, and further preventing air with liquid from entering the body protective shell 20, causing adverse effects on the components, devices and modules in the body protective shell 20.

[0038] Further, such as Figure 2 and Figure 6 A cooling device 52 is installed at one end of the water tank 50, and the coolant in the water tank 50 is cooled by the cooling device 52. The cooling device 52 is an existing water tank cooling equipment, and its cooling end is close to the interior of the water tank 50, and absorbs heat from the coolant in the water tank 50, and its heat release end is placed on the side away from the water tank 50 to release heat. A liquid outlet pipe 53 is installed at the bottom of the water tank 50, and a liquid inlet pipe 54 is installed at one end of the water tank 50 away from the liquid outlet pipe 53. The liquid outlet pipe 53 and the liquid inlet pipe 54 are both connected to the interior of the water tank 50 and have built-in valves. The coolant in the water tank 50 is discharged through the liquid outlet pipe 53, and the water tank 50 can be filled with coolant through the liquid inlet pipe 54. This structural arrangement facilitates the replacement of the coolant.

[0039] Further, such as Figure 3 One end of the outer tube 31 is fixedly connected to a drain pipe 311 extending into the interior of the water tank 50. This structural arrangement facilitates the discharge of the coolant in the outer tube 31 into the water tank 50, so that the coolant forms a liquid circulation between the water tank 50, the liquid delivery component 60 and the outer tube 31. The coolant in the outer tube 31 continuously flows back to the water tank 50 to cool the coolant and maintain a low temperature state of the coolant, thereby improving the cooling effect on the air.

[0040] Working principle: When the body protective shell 20 is cooled and cooled, the air extraction device 42 and the liquid extraction device 61 are started at the same time. During this process, since the air extraction device 42 is in the started state, a negative pressure space is formed in the inner tube 32, and the outside air is sucked into the inner tube 32 through the air inlet pipe 321, and the air is sucked into the air extraction device 42 through the air supply pipe 41. The air is then transported to the body protective shell 20 through the exhaust pipe 43 to dissipate heat for the components, devices and modules of the charging pile. At the same time, the coolant in the water tank 50 is sucked out through the liquid suction pipe The cooling liquid is drawn into the liquid extraction device 61 by the exhaust hood 63 and transported to the cavity formed by the outer tube 31 and the inner tube 32. Through contact with the inner tube 32, the air in the inner tube 32 exchanges heat with the cooling liquid outside the inner tube 32, thereby reducing the temperature of the air in the inner tube 32. As a result, the air discharged into the body protective shell 20 by the exhaust pipe 43 is cool air with a lower temperature, avoiding the problem of using only air cooling to dissipate heat, which leads to a high temperature of the air used for air cooling in hot weather, and thus a poor air cooling effect.

[0041] Moreover, most of the cooling and heat dissipation structures are external structures, which makes them easier to maintain.

[0042] Among them, the exhaust pipe 43 is located at the air outlet end of the body protective shell 20 and can be installed with an air duct or air pipe with multiple air outlets to perform multi-directional air cooling and heat dissipation on the components, devices and modules in the body protective shell 20;

[0043] The liquid extraction device 61 and the air extraction device 42 can be selectively opened at different times. The opening mode can be limited to: when the outside temperature exceeds 35°C, the liquid extraction device 61 is opened for operation; otherwise, when the outside temperature does not exceed 35°C, the liquid extraction device 61 is closed, and only the air supply assembly 40 is used to cool the body protective shell 20, thereby achieving a certain energy-saving and emission-reduction effect.

[0044] Furthermore, in order to reduce manual operation and improve automation efficiency, the external cooling and heat dissipation structure of the charging pile can be equipped with a temperature sensor located outside for temperature monitoring, as well as a PLC control system. The PLC control system controls the switching status of the air extraction device 42 and the liquid extraction device 61, and the temperature sensor is connected to the PLC control system signal. The optional setting mode is: when the external temperature is monitored to be higher than 35°, the PLC control system controls the liquid extraction device 61 and the air extraction device 42 to be turned on at the same time; when the external temperature does not exceed 35°, the PLC control system only controls the air supply pipe 41 to be turned on. At this time, the air cooling and heat dissipation in the body protective shell 20 is achieved only through the air supply component 40;

[0045] It should be added that the airflow discharged into the body protection shell 20 can be used as an air outlet through the exhaust port 21 provided in the body protection shell 20.

[0046] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply the existence of any such actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article, or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or device. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of other identical elements in the process, method, article, or device comprising the element.

[0047] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A charging pile external cooling and heat dissipation structure, comprising a body protection shell (20) with a base (10), wherein both sides of the body protection shell (20) are respectively provided with exhaust ports (21) for exhausting air, characterized in that: Also includes: A double-layered sleeve (30) capable of simultaneously conveying cooling liquid and air is provided on the outer side of the body protective shell (20); an air supply assembly (40) connected to the body protective shell (20) is installed on one side of the double-layered sleeve (30) for conveying air into the body protective shell (20); a water tank (50) is installed on the lower side of the double-layered sleeve (30); a liquid supply assembly (60) connected to the double-layered sleeve (30) is installed on the upper end of the water tank (50) for conveying cooling liquid into the double-layered sleeve (30).

2. The external cooling and heat dissipation structure of a charging pile according to claim 1, characterized in that: The double-layered sleeve (30) is fixed to the outside of the machine body protective shell (20) via an outer tube (31), supporting the double-layered sleeve (30) as a whole.

3. The external cooling and heat dissipation structure of a charging pile according to claim 1, characterized in that: The water tank (50) is fixed to the base (10) via a bracket (51) at the bottom. A cooling device (52) is installed at one end of the water tank (50), with its cooling end close to the interior of the water tank (50) and its heat release end located on a side away from the water tank (50). A liquid outlet pipe (53) is installed at the bottom of the water tank (50), and a liquid inlet pipe (54) is installed at one end of the water tank (50) away from the liquid outlet pipe (53). Both the liquid outlet pipe (53) and the liquid inlet pipe (54) are connected to the interior of the water tank (50) and have built-in valves to supply and discharge the coolant in the water tank (50).

4. The external cooling and heat dissipation structure of a charging pile according to claim 1, characterized in that: The double-layer casing (30) further comprises an outer tube (31) for conveying cooling liquid and an inner tube (32) for conveying air, wherein the inner tube (32) separates the air from the cooling liquid; The inner tube (32) is fixed to the inner wall of the outer tube (31) via a plurality of support rods (301) uniformly arranged on the outside.

5. The external cooling and heat dissipation structure of a charging pile according to claim 4, characterized in that: One end of the inner tube (32) is connected to and fixed with an air intake pipe (321) extending to the outside of the outer tube (31). A plurality of dustproof nets (322) are detachably provided at the inlet of the double-layer sleeve (30) away from the air intake pipe (321). External air passes through the dustproof nets (322) and then enters the inner tube (32) through the air intake pipe (321).

6. The external cooling and heat dissipation structure of a charging pile according to claim 5, characterized in that: The apertures of the corresponding dust-proof nets (322) decrease in sequence from the outside to the inside of the air inlet pipe (321), thereby intercepting dust particles layer by layer.

7. The external cooling and heat dissipation structure of a charging pile according to claim 1, characterized in that: The air supply assembly (40) further comprises an air supply pipe (41) connected to the other end of the inner tube (32), the air supply pipe (41) extending to the outside of the double-layered sleeve (30), an air extraction device (42) being installed at one end of the air supply pipe (41) away from the double-layered sleeve (30), the air supply pipe (41) corresponding to the air inlet end of the air extraction device (42), an air outlet end of the air extraction device (42) being installed with an exhaust pipe (43) connected to the interior of the machine body protective shell (20), the air in the inner tube (32) being drawn into the air extraction device (42) through the air supply pipe (41), and then being transported to the machine body protective shell (20) through the exhaust pipe (43).

8. The external cooling and heat dissipation structure of a charging pile according to claim 1, characterized in that: The liquid delivery assembly (60) further includes a liquid pumping device (61) mounted on the upper end of the water tank (50); the water inlet end of the liquid pumping device (61) is connected to a liquid suction pipe (62) extending into the interior of the water tank (50); the water outlet end of the liquid pumping device (61) is connected to a liquid discharge cover (63) connected to the outer tube (31); the water tank (50) is sucked into the liquid pumping device (61) through the liquid suction pipe (62), and the coolant is delivered to the outer tube (31) through the liquid discharge cover (63).

9. The external cooling and heat dissipation structure of a charging pile according to claim 4, characterized in that: One end of the inner tube (32) close to the drain cover (63) is fixedly connected to a plug (323) to seal a port of the inner tube (32) close to the drain cover (63).

10. The external cooling and heat dissipation structure of a charging pile according to claim 4, characterized in that: One end of the outer tube (31) is fixedly connected to a liquid discharge pipe (311) extending into the interior of the water tank (50), and liquid circulation is formed between the water tank (50), the liquid delivery assembly (60), and the outer tube (31) via the liquid discharge pipe (311).

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