Liquid cooling charging pile with sealing structure

Abstract

The utility model relates to the technical field of charging piles, in particular to a liquid cooling charging pile with a sealing structure, which comprises a charging pile body, and a liquid cooling mechanism is arranged on the back of the charging pile body. By embedding the hollow plate on the charging pile body, heat generated during operation in the charging pile body can be conveniently absorbed, and by arranging the pressure relief bin at the top of the liquid storage tank, according to the principle of thermal expansion and cold contraction, when the volume of the liquid is expanded due to the fact that cooling liquid absorbs the heat, the internal pressure of the liquid cooling mechanism is too high, and the pressure is reduced. The piston plate in the pressure relief bin can be jacked by over-high pressure, so that the internal space of the liquid storage tank can be extended and increased, the pressure in the liquid storage tank can be relieved, and the problem of leakage caused by damage to a cooling liquid circulation pipeline due to over-high pressure can be avoided; deformation generated by expanding the internal space of the liquid storage tank can be adapted through the ductility of the liquid storage tank, so that the sealing performance is improved.

Description

Technical Field

[0001] This utility model relates to the field of charging pile technology, specifically to a liquid-cooled charging pile with a sealed structure. Background Technology

[0002] With the rapid development of the electric vehicle market, charging piles, as a crucial energy supply facility, require high performance and reliability. Since charging piles generate significant heat during operation, especially in the charging modules and power electronic devices, effective heat dissipation design is essential for ensuring stable operation and extending their lifespan. Currently, charging pile heat dissipation primarily employs technologies such as air cooling and liquid cooling. Air cooling uses fans or air pumps to draw in cool external air and then expel hot air to remove heat from the components. Liquid cooling, on the other hand, uses coolant circulating within the charging module to carry away heat and dissipate it to the outside environment.

[0003] Existing technology, such as publication number CN220742761U, provides a liquid-cooled charging pile, relating to the field of charging pile heat dissipation technology. It includes a heat dissipation module, where a heat-conducting box comprises a lower shell and an upper cover. The at least two pairs of waterproof grooves and waterproof baffles ensure that the refrigerant cannot leak along the installation gaps of the heat-conducting box. The heat-conducting box can conduct most of the heat generated by the charging device to the refrigerant. The water-separating plate increases the contact area between the refrigerant and the heat-conducting box, improving the heat absorption efficiency of the refrigerant. The folded water channel allows the refrigerant sufficient time to absorb heat from the heat-conducting box, transferring the heat to the outlet tank, indirectly exchanging heat with the outside air over a large area through the storage tank. Ultimately, this ensures that the charging pile achieves efficient heat dissipation, is less prone to refrigerant overflow, and has a simple overall structure with low production and maintenance costs.

[0004] The current design incorporates a heat-conducting box inside the charging pile to absorb heat, and at least two pairs of waterproof grooves and baffles prevent liquid leakage through the gap between the upper and lower housings. However, in actual use, since coolant is generally a liquid, according to the principle of thermal expansion and contraction, the average kinetic energy of molecules increases when the liquid absorbs heat. The distance between molecules increases with the increase in kinetic energy, leading to volume expansion of the liquid. If the cooling system does not consider the expansion characteristics of the coolant, the expansion due to heat may cause excessive internal pressure in the cooling system, potentially damaging components such as radiators and water pipes. Therefore, we propose a liquid-cooled charging pile with a sealed structure. Utility Model Content

[0005] The purpose of this utility model is to provide a liquid-cooled charging pile with a sealed structure. This liquid-cooled charging pile with a sealed structure solves the problem that when a liquid absorbs heat, the average kinetic energy of the molecules increases, and the distance between the molecules increases with the increase of kinetic energy, which leads to the expansion of the liquid volume. If the cooling system does not take into account the expansion characteristics of the coolant, when the coolant expands due to heat, it may cause the internal pressure of the cooling system to be too high, thereby damaging the cooling pipes.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A liquid-cooled charging pile with a sealed structure includes a charging pile body, and a liquid cooling mechanism is provided on the back of the charging pile body.

[0008] The liquid cooling mechanism includes several hollow plates, which are embedded in grooves on the back of the charging pile body. A liquid storage tank is fixedly connected to the back of the charging pile body, and water outlet pipes and return pipes are fixedly connected to both sides of the liquid storage tank. The water outlet pipes and return pipes are respectively connected to the corresponding side of the hollow plate.

[0009] A pressure relief chamber is fixedly connected to the top of the liquid storage tank, a piston plate is slidably connected to the inner wall of the pressure relief chamber, and an elastic rubber diaphragm is fixedly connected to the inner wall of the liquid storage tank below the pressure relief chamber.

[0010] Preferably, a dustproof plate is fixedly connected to the liquid storage tank above the pressure relief chamber, and the top two sides of the dustproof plate are sloped.

[0011] Preferably, a partition is vertically arranged in the middle area inside the liquid storage tank to divide the liquid storage tank into two areas: an inlet area and a outlet area.

[0012] Preferably, a water pump is fixedly connected to the inner wall of the storage tank at the location of the drainage area, and the outlet end of the water pump is connected to the outlet pipe.

[0013] Preferably, a number of heat-conducting plates are fixedly connected to the inner wall of the hollow plate. Each heat-conducting plate has a notch on one side, and the notches are staggered to form a serpentine coolant channel inside the hollow plate.

[0014] Preferably, the return pipe is provided with several sets of cooling sections, and the pipe wall of the cooling section is provided with annularly arranged heat dissipation fins.

[0015] Preferably, a turbine is rotatably connected to the inner wall of the cooling section below the heat dissipation fins, and an impeller is rotatably connected to the outer wall of the cooling section below the heat dissipation fins, with magnetic blocks attracting each other on the impeller and the turbine.

[0016] By employing the above technical solution, this utility model provides a liquid-cooled charging pile with a sealed structure. It possesses at least the following beneficial effects:

[0017] I. This utility model incorporates a hollow plate embedded in the charging pile body to facilitate the absorption of heat generated during the charging pile's internal operation, preventing excessive heat from affecting the service life of internal components. A water pump drives coolant from the storage tank into the hollow plate via the outlet pipe, and then returns it to the storage tank via the return pipe, circulating the coolant and removing the absorbed heat to maintain its heat absorption efficiency. Furthermore, a pressure relief chamber is installed at the top of the storage tank. Based on the principle of thermal expansion and contraction, when the coolant absorbs heat and expands, causing excessive pressure within the liquid cooling mechanism, the high pressure will push up the piston plate in the pressure relief chamber, extending and increasing the internal space of the storage tank to alleviate internal pressure. This prevents excessive pressure from damaging the coolant flow pipes and causing leaks. Additionally, an elastic rubber diaphragm below the piston plate can adapt to the deformation caused by the expansion of the storage tank's internal space, improving sealing.

[0018] II. This utility model improves the cooling effect by providing heat-conducting fins on the inner wall of the hollow plate and creating a serpentine coolant channel with staggered openings. This increases the coolant's passage time and contact area. Furthermore, the heat dissipation fins on the return pipe allow the returning coolant to dissipate heat into the surrounding air as it passes through, thus lowering the coolant's temperature and keeping it at a suitable cooling temperature. When the coolant passes through the turbine in the cooling section, the potential energy of the liquid flow drives the turbine to rotate. The magnetic attraction between the turbine and the impeller causes the turbine to rotate, which in turn drives the impeller to rotate, facilitating airflow to the heat dissipation fins and further enhancing their heat dissipation effect. Attached Figure Description

[0019] The accompanying drawings, which are included to provide a further understanding of the present invention, form part of this application:

[0020] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0021] Figure 2 This is a schematic diagram of the back of the present invention;

[0022] Figure 3 This is a schematic diagram of the liquid cooling mechanism in this utility model;

[0023] Figure 4 This is a cross-sectional view of the hollow plate in this utility model;

[0024] Figure 5This is a cross-sectional view of the liquid storage tank in this utility model;

[0025] Figure 6 This is a cross-sectional view of the cooling section in this utility model.

[0026] In the diagram: 1. Charging pile body; 2. Liquid cooling mechanism; 21. Hollow plate; 211. Heat-conducting plate; 212. Notch; 22. Liquid storage tank; 221. Partition plate; 222. Water pump; 23. Water outlet pipe; 24. Return pipe; 25. Pressure relief chamber; 251. Piston plate; 252. Elastic rubber diaphragm; 253. Dustproof plate; 26. Cooling section; 261. Heat dissipation fins; 262. Turbine; 263. Impeller. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0028] A liquid-cooled charging pile with a sealed structure, such as Figure 1 - Figure 6 As shown, the device includes a charging pile body 1. A liquid cooling mechanism 2 is provided on the back of the charging pile body 1. The liquid cooling mechanism 2 includes several hollow plates 21, which are embedded in grooves on the back of the charging pile body 1. A liquid storage tank 22 is fixedly connected to the back of the charging pile body 1. Outlet pipes 23 and return pipes 24 are fixedly connected to both sides of the liquid storage tank 22. The outlet pipes 23 and return pipes 24 are respectively connected to the corresponding side of the hollow plates 21. A pressure relief chamber 25 is fixedly connected to the top of the liquid storage tank 22. A movable valve is slidably connected to the inner wall of the pressure relief chamber 25. A stopper plate 251 is fixedly connected to an elastic rubber membrane 252 on the inner wall of the liquid storage tank 22 below the pressure relief chamber 25. A dustproof plate 253 is fixedly connected to the liquid storage tank 22 above the pressure relief chamber 25, and the top two sides of the dustproof plate 253 are set with slopes. A partition 221 is vertically set in the middle area inside the liquid storage tank 22 to divide the liquid storage tank 22 into two areas, namely the liquid inlet area and the liquid outlet area. A water pump 222 is fixedly connected to the inner wall of the liquid storage tank 22 at the position of the liquid outlet area, and the water outlet end of the water pump 222 is connected to the water outlet pipe 23.

[0029] In this embodiment, a hollow plate 21 is embedded in the charging pile body 1 to facilitate the absorption of heat generated during the operation of the charging pile body 1, thus preventing the charging pile body 1 from generating excessive heat during operation and affecting the service life of internal components. A water pump 222 drives the coolant in the liquid storage tank 22 to enter the hollow plate 21 from the outlet pipe 23 and then return to the liquid storage tank 22 via the return pipe 24, circulating the coolant to facilitate the removal of heat absorbed by the hollow plate 21 and maintain its heat absorption efficiency. Furthermore, a drain valve is installed at the top of the liquid storage tank 22. The pressure chamber 25 works on the principle of thermal expansion and contraction. When the coolant absorbs heat and its volume expands, causing excessive pressure inside the liquid cooling mechanism 2, the excessive pressure will push up the piston plate 251 inside the pressure relief chamber 25, extending and increasing the internal space of the liquid storage tank 22 to relieve the pressure inside the liquid storage tank 22. This prevents excessive pressure from damaging the coolant flow pipes and causing leakage. In addition, the elastic rubber diaphragm 252 set below the piston plate 251 can use its own extensibility to adapt to the deformation caused by the expansion of the internal space of the liquid storage tank 22, thereby improving the sealing performance.

[0030] like Figure 4 As shown, preferably, a number of heat-conducting plates 211 are fixedly connected to the inner wall of the hollow plate 21. Each heat-conducting plate 211 has a notch 212 on one side, and the notches 212 are staggered to form a serpentine coolant channel inside the hollow plate 21.

[0031] In this embodiment, by providing heat-conducting fins 211 on the inner wall of the hollow plate 21 and staggering the notches 212 to form a serpentine coolant channel, the time and contact surface of the coolant are increased, thereby improving the cooling effect.

[0032] like Figure 6 As shown, preferably, the return pipe 24 is provided with several sets of cooling sections 26, the pipe wall of the cooling section 26 is provided with annularly arranged heat dissipation fins 261, the inner wall of the cooling section 26 is rotatably connected to a turbine 262 below the heat dissipation fins 261, the outer wall of the cooling section 26 is rotatably connected to an impeller 263 below the heat dissipation fins 261, and the impeller 263 and the turbine 262 are provided with mutually attractive magnetic blocks.

[0033] In this embodiment, by setting heat dissipation fins 261 on the return pipe 24, the heat dissipation fins 261 can dissipate heat into the surrounding air when the return coolant passes through them, thereby reducing the temperature of the coolant and keeping it at a suitable cooling temperature. When the coolant passes through the turbine 262 in the cooling section 26, the potential energy of the liquid flow will drive the turbine 262 to rotate. Under the mutual attraction of the magnetic blocks on the turbine 262 and the impeller 263, the rotation of the turbine 262 will drive the impeller 263 to rotate, which facilitates the blowing of air onto the heat dissipation fins 261 and accelerates the airflow, thereby further improving the heat dissipation effect of the heat dissipation fins 261.

[0034] This utility model discloses a liquid-cooled charging pile with a sealed structure. During use, a hollow plate 21 is embedded in the charging pile body 1 to facilitate the absorption of heat generated during operation. A water pump 222 drives coolant from the storage tank 22 into the hollow plate 21 through the outlet pipe 23, and then returns it to the storage tank 22 via the return pipe 24, circulating the coolant to remove the heat absorbed by the hollow plate 21 and maintain its heat absorption efficiency. Furthermore, a pressure relief chamber 25 is provided at the top of the storage tank 22. Based on the principle of thermal expansion and contraction, when the coolant absorbs heat and its volume expands, causing excessive pressure inside the liquid cooling mechanism 2, the excessive pressure will push up the piston plate 251 inside the pressure relief chamber 25, extending and increasing the internal space of the storage tank 22 to alleviate the internal pressure and prevent damage to the coolant flow pipes. An elastic rubber diaphragm 252 is provided below the piston plate 251. The hollow plate 21 can adapt to the deformation caused by the expansion of the internal space of the liquid storage tank 22 by utilizing its own extensibility, thereby improving the sealing performance. The inner wall of the hollow plate 21 is provided with heat-conducting fins 211, and the interlaced openings 212 form a serpentine coolant channel to increase the coolant passage time and contact surface, thereby improving the cooling effect. The heat dissipation fins 261 are provided on the return pipe 24, so that when the return coolant passes through the heat dissipation fins 261, the heat is dissipated into the surrounding air by the heat dissipation fins 261, thereby reducing the temperature of the coolant. When the coolant passes through the turbine 262 in the cooling section 26, the potential energy of the liquid flow will drive the turbine 262 to rotate. Under the mutual attraction of the magnetic blocks on the turbine 262 and the impeller 263, the rotation of the turbine 262 will drive the impeller 263 to rotate, so as to facilitate the blowing of air onto the heat dissipation fins 261 and accelerate the airflow, further improving the heat dissipation effect of the heat dissipation fins 261.

[0035] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0036] Although 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 alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A liquid-cooled charging pile with a sealed structure, comprising a charging pile body (1), characterized in that: The back of the charging pile body (1) is provided with a liquid cooling mechanism (2); The liquid cooling mechanism (2) includes several hollow plates (21), which are embedded in a groove on the back of the charging pile body (1). A liquid storage tank (22) is fixedly connected to the back of the charging pile body (1). A water outlet pipe (23) and a return pipe (24) are fixedly connected to both sides of the liquid storage tank (22). The water outlet pipe (23) and the return pipe (24) are respectively connected to the corresponding side of the hollow plate (21). The top of the liquid storage tank (22) is fixedly connected to a pressure relief chamber (25), and the inner wall of the pressure relief chamber (25) is slidably connected to a piston plate (251). An elastic rubber membrane (252) is fixedly connected to the inner wall of the liquid storage tank (22) at a position below the pressure relief chamber (25).

2. The liquid-cooled charging pile with a sealed structure according to claim 1, characterized in that: The liquid storage tank (22) is fixedly connected to a dustproof plate (253) above the pressure relief chamber (25), and the top two sides of the dustproof plate (253) are set at an angle.

3. A liquid-cooled charging pile with a sealed structure according to claim 1, characterized in that: The liquid storage tank (22) has a partition (221) vertically arranged in the middle area inside, which is used to divide the liquid storage tank (22) into two areas: the liquid inlet area and the liquid outlet area.

4. A liquid-cooled charging pile with a sealed structure according to claim 3, characterized in that: A water pump (222) is fixedly connected to the inner wall of the storage tank (22) at the position of the drainage area, and the water outlet of the water pump (222) is connected to the water outlet pipe (23).

5. A liquid-cooled charging pile with a sealed structure according to claim 1, characterized in that: The inner wall of the hollow plate (21) is fixedly connected with several heat-conducting plates (211). Each heat-conducting plate (211) has a notch (212) on one side, and the notches (212) are staggered to form a serpentine coolant channel inside the hollow plate (21).

6. A liquid-cooled charging pile with a sealed structure according to claim 1, characterized in that: The return pipe (24) is provided with several sets of cooling sections (26), and the cooling section (26) is provided with annularly arranged heat dissipation fins (261) on the pipe wall.

7. A liquid-cooled charging pile with a sealed structure according to claim 6, characterized in that: The inner wall of the cooling section (26) is rotatably connected to a turbine (262) located below the heat dissipation fins (261), and the outer wall of the cooling section (26) is rotatably connected to an impeller (263) located below the heat dissipation fins (261). Magnetic blocks that attract each other are provided on the impeller (263) and the turbine (262).

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