Charging pile liquid cooling heat dissipation system

Abstract

The utility model discloses a liquid cooling heat dissipation system for a charging pile. The liquid cooling heat dissipation system comprises a box body, a self-priming pump, a water tank, a centrifugal pump, a flow meter, a first access pipeline and a first output pipeline, the water tank and the self-priming pump are arranged in the box body; the self-priming pump is connected with the water tank through an output liquid supplementing pipeline, a port of the water tank is connected with the liquid inlet end of the centrifugal pump through a first main pipeline, the liquid outlet end of the centrifugal pump is connected with the flow meter through a second main pipeline, the flow meter is connected with a first access pipeline, and the first access pipeline is connected into a heat dissipation pipeline in the charging pile. The first output pipeline is connected with a heat dissipation backflow pipeline in the charging pile, and the first output pipeline is connected with the water return tank through a first liquid return pipeline. According to the utility model, liquid is adopted to directly carry out heat exchange cooling on a heat source in the charging pile, the mode is low in energy consumption, high in cooling speed and high in cooling efficiency, and the charging pile is designed to be closable and is low in internal occupied space.

Description

Technical Field

[0001] This utility model relates to a heat dissipation system for charging piles, and more particularly to a liquid cooling heat dissipation system for charging piles. Background Technology

[0002] With the surge in sales of new energy vehicles, the demand for charging piles continues to expand. While fast charging can fully charge a vehicle in 1-2 hours, the heat generated by the charging piles also increases with the charging speed. Traditional cooling methods for charging piles include: 1. Air cooling: Using an internal fan to expel internal heat. Its disadvantages include low heat dissipation, low efficiency, significant susceptibility to environmental factors, and the need for dust removal and dehumidification equipment. 2. Air conditioning: Utilizing external cooling equipment to generate cold air, which is then delivered to the charging pile to neutralize the internal hot air or to expel the hot air through exhaust vents. Its disadvantages include high energy consumption, stringent airflow requirements, exhaust protection, uneven cooling, and the need for filtration devices such as water and dust filters. Incomplete air filtration (dust and impurities may enter the internal cooling airflow), potential damage to sensitive components inside the charging pile, and the need for specific protection for sensitive areas. All of these traditional cooling systems need to be installed inside the charging pile, and while temporarily utilizing the internal space, the heat generated by the cooling system itself also affects the internal temperature of the charging pile.

[0003] This shows that as charging piles become more powerful and charging times become shorter, traditional heat dissipation methods can no longer meet the demands. Summary of the Invention

[0004] To address the aforementioned technical problems, this utility model provides a liquid cooling system for charging piles, which uses liquid to directly exchange heat with and cool the internal heat source of the charging pile. This system does not occupy the internal space of the charging pile, has low energy consumption, and high cooling efficiency.

[0005] To solve the above-mentioned technical problems, this utility model adopts the following technical solution: a liquid cooling heat dissipation system for charging piles, including a housing, a self-priming pump, a water tank, a centrifugal pump, a flow meter, a first inlet pipe, and a first outlet pipe; the water tank and the self-priming pump are installed inside the housing; the self-priming pump is connected to the water tank through an outlet replenishment pipe, the port of the water tank is connected to the inlet of the centrifugal pump through a first main pipe, the outlet of the centrifugal pump is connected to the flow meter through a second main pipe, the flow meter is connected to the first inlet pipe, and the first inlet pipe is connected to the internal heat dissipation pipe of the charging pile; the first outlet pipe is connected to the internal heat dissipation return pipe of the charging pile, and the first outlet pipe is connected to the return water tank through a first return pipe.

[0006] Furthermore, in this invention, the flow meter is connected to a flow divider via a third main pipe. The flow divider is connected to a first access pipe and a second access pipe, which are connected to a heat dissipation pipe inside the charging pile. The second output pipe and the first output pipe are connected to a return pipe inside the charging pile. The first output pipe is connected to a return water tank via a first return liquid pipe, and the second output pipe is connected to a return water tank via a second return liquid pipe.

[0007] Furthermore, the present invention includes an air-cooling system inside the housing, the air-cooling system including a first fan and a second fan; the first fan and the second fan are disposed on the top of the upper shell of the housing, a first front ventilation port and a second front ventilation port are disposed on one side of the upper shell, and a first rear ventilation port and a second rear ventilation port are disposed on the opposite side of the upper shell.

[0008] Furthermore, the present invention includes a first air-cooled heat exchanger and a second air-cooled heat exchanger disposed inside the housing; the first air-cooled heat exchanger is connected between the first output pipe and the first return pipe, and the first air-cooled heat exchanger is equipped with a first temperature sensor; the second air-cooled heat exchanger is connected between the second output pipe and the second return pipe.

[0009] Furthermore, in this invention, the first return liquid pipe and the second return liquid pipe are connected to the water tank via a filter manifold.

[0010] Furthermore, in this invention, a test module is connected between the second output pipe and the second air-cooled heat exchanger. The second output pipe is connected to the test module via a transfer pipe and a test pipe. The test module is equipped with a manual ball valve test port and a second temperature sensor.

[0011] Furthermore, the water tank is equipped with a third temperature sensor.

[0012] Furthermore, the water tank is equipped with a level gauge on its top.

[0013] Furthermore, the present invention provides a top manual ball valve at the top of the water tank and a bottom manual ball valve at the bottom of the water tank.

[0014] Furthermore, the upper housing is provided with a side door.

[0015] The beneficial effects of adopting the above technical solution are: This utility model uses a liquid medium to directly exchange heat and cool the internal heat source of the charging pile, which differs from the traditional car charging pile cooling system in that:

[0016] 1. Difference in cooling efficiency: This system uses a liquid medium for cooling, which has a specific heat capacity about 4 times larger than that of traditional air cooling (currently, the difference is between the specific heat capacity of water and air, depending on the medium used). The larger the specific heat capacity of the heat dissipation medium, the more heat it absorbs and the larger the heat exchange each time. Therefore, the heat dissipation efficiency and heat dissipation speed of air cooling and water cooling are very different.

[0017] 2. Difference in cooling effect: This system uses a liquid medium to directly contact the heat source and transfer temperature when passing through it. It has a fast cooling speed, good effect, low noise, little impact on the environment, and low requirements for the internal protection of the charging pile. Unlike traditional air cooling, it does not require specific protection for sensitive parts inside the charging pile.

[0018] 3. Different installation methods: This system is an external installation accessory installed on the top of the charging pile, which does not occupy the internal space of the charging pile. The internal heat source of the system itself will not affect the charging pile. The liquid cooling medium flows along the pipeline and will not bring impurities or other items into the charging pile. The cooling system has little impact on the overall internal structure of the charging pile. Attached Figure Description

[0019] Figure 1 This is a three-dimensional schematic diagram of the front side of this utility model;

[0020] Figure 2 This is a three-dimensional schematic diagram of the rear side of this utility model;

[0021] Figure 3 This is a schematic diagram of the internal structure of this utility model;

[0022] Figure 4 This is a top view of the internal structure of this utility model;

[0023] In the diagram: 1. First fan, 2. Second fan, 3. Upper casing, 4. Side door, 5. Housing, 6. First front vent, 7. Second front vent, 8. First rear vent, 9. Second rear vent, 10. First inlet pipe, 11. Second inlet pipe, 12. Second outlet pipe, 13. First outlet pipe, 14. Self-priming pump, 15. Input replenishment pipe, 16. Output replenishment pipe, 17. Water tank, 18. Top manual ball valve, 19. Level gauge, 20. Port, 21. First main... Pipeline, 22. Centrifugal pump, 23. Second main pipeline, 24. Flow meter, 25. Third main pipeline, 26. Flow divider, 27. First air-cooled heat exchanger, 28. First temperature sensor, 29. First return liquid pipeline, 30. Filter manifold, 31. Transfer pipeline, 32. Test pipeline, 33. Test module, 34. Manual ball valve test port, 35. Second temperature sensor, 36. Second air-cooled heat exchanger, 37. Second return liquid pipeline, 38. Third temperature sensor, 39. Bottom manual ball valve. Detailed Implementation

[0024] The present invention will now be described in further detail with reference to the accompanying drawings.

[0025] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0026] One embodiment of this utility model: as follows Figure 1 , Figure 3 and Figure 4 As shown, a liquid cooling system for a charging pile includes a housing 5, a self-priming pump 14, a water tank 17, a centrifugal pump 22, a flow meter 24, a first inlet pipe 10, and a first outlet pipe 13. The water tank 17 and the self-priming pump 14 are housed within the housing 5. The liquid inlet of the self-priming pump 14 is connected to a water source via an input replenishment pipe 15, and the liquid outlet of the self-priming pump 14 is connected to the water tank 17 via an output replenishment pipe 16. Port 20 of the water tank 17 is connected to the liquid inlet of the centrifugal pump 22 via a first main pipe 21, and the liquid outlet of the centrifugal pump 22 is connected to the flow meter 24 via a second main pipe 23. The flow meter 24 is connected to the first inlet pipe 10, which is connected to the internal cooling pipe of the charging pile. The first outlet pipe 13 is connected to the internal cooling return pipe of the charging pile, and the first outlet pipe 13 is connected to the return water tank 17 via a first return liquid pipe 29. When the charging station needs cooling, this heat dissipation system delivers cooling medium to the internal pipes of the charging station via connecting pipes. Since the pipes connect to heat sources, heat is transferred from the heat sources through the pipe walls (from high temperature to low temperature). Once the liquid cooling medium has passed through all heat sources, it has completed heat dissipation for the charging station and is then returned to the heat dissipation system via output pipes. The high-temperature cooling medium, after dissipating heat from the charging station, is then transported to the heat exchanger for further cooling. The cooled liquid cooling medium is then recycled to cool the charging station again, forming a closed-loop heat dissipation process.

[0027] In other specific embodiments of this utility model, the remainder is the same as the above embodiments, except that, as shown in the following... Figure 3 and Figure 4As shown, the flow meter 24 is connected to a splitter 26 via a third main pipe 25. The splitter 26 is connected to a first inlet pipe 10 and a second inlet pipe 11, which are connected to the internal heat dissipation pipes of the charging pile. The second output pipe 12 and the first output pipe 13 are connected to the internal return pipes of the charging pile. The first output pipe 13 is connected to the return water tank 17 via a first return liquid pipe 29, and the second output pipe 12 is connected to the return water tank 17 via a second return liquid pipe 37. This invention consists of two heat dissipation pipes, which can fully exchange heat inside the charging pile and cool the two media separately during return flow, enabling rapid temperature reduction for recycling.

[0028] In other specific embodiments of this utility model, the remainder is the same as the above embodiments, except that, as shown in the following... Figure 1 and Figure 2 As shown, a cooling system is installed inside the housing 5, which includes a first fan 1 and a second fan 2. The first fan 1 and the second fan 2 are located on the top of the upper shell 3 of the housing 5. A first front vent 6 and a second front vent 7 are provided on one side of the upper shell 3, and a first rear vent 8 and a second rear vent 9 are provided on the opposite side of the upper shell 3. This heat dissipation system utilizes a specific structure to create a stable airflow with a fixed direction. This airflow dissipates heat from the heat dissipation components within the system, and the heat dissipation components dissipate heat from the medium, forming a multiple transfer and dissipation of temperature.

[0029] Based on the above embodiments, as follows Figure 4 As shown, the housing 5 is equipped with a first air-cooled heat exchanger 27 and a second air-cooled heat exchanger 36; the first air-cooled heat exchanger 27 is connected between the first output pipe 13 and the first return pipe 29, and a first temperature sensor 28 is installed on the first air-cooled heat exchanger 27; the second air-cooled heat exchanger 36 is connected between the second output pipe 12 and the second return pipe 37. When the liquid medium passes through the air-cooled heat exchanger, the heat is transferred to the outside of the equipment through the gas to achieve cooling circulation, thereby accelerating the cooling efficiency of the medium for recycling. The specific working principle is that the first air-cooled heat exchanger 27 and the second air-cooled heat exchanger 36 are installed at the ventilation opening. When the first fan 1 and the second fan 2 are working, they exhaust air outward to form an airflow blowing outward from the housing 5. A negative pressure is formed inside the housing 5 to generate suction. Due to structural limitations, the upper shell 3 and the housing 5 form a four-sided sealed structure. The air can only enter the housing 5 through the four ventilation openings on both sides. During the process of the air being drawn into the housing 5, it will pass through the two air-cooled heat exchangers installed behind the ventilation opening, thereby taking away the heat on the heat exchangers and then exhausting it out of the equipment through the fan to achieve the heat dissipation effect.

[0030] In other specific embodiments of this utility model, the remainder is the same as the above embodiments, except that, as shown in the following... Figure 4 As shown, the first return liquid pipe 29 and the second return liquid pipe 37 are connected to the water tank 17 via the filter manifold 30. The liquid medium is filtered for impurities in the filter manifold 30 and then flows into the water tank 17 to mix with the liquid in the water tank 17.

[0031] In other specific embodiments of this utility model, the remainder is the same as the above embodiments, except that, as shown in the following... Figure 4 As shown, a test module 33 is connected between the second output pipe 12 and the second air-cooled heat exchanger 36. The second output pipe 12 is connected to the test module 33 via a connecting pipe 31 and a test pipe 32. The test module 33 is equipped with a manual ball valve test port 34 and a second temperature sensor 35. The manual ball valve test port 34 must be opened to perform actions such as venting, draining, and pressure testing on the pipeline. The second temperature sensor can provide temperature feedback to determine whether the high-temperature liquid flowing back into the charging pile is normal. After the high-temperature liquid passes through the test module 33, it enters the second air-cooled heat exchanger 36 for temperature transfer.

[0032] In other specific embodiments of this utility model, the remainder is the same as the above embodiments, except that, as shown in the following... Figure 4 As shown, the water tank 17 is equipped with a third temperature sensor 38 to detect the temperature of the mixed liquid in real time, thereby determining whether the temperature is normal.

[0033] In other specific embodiments of this utility model, the remainder is the same as the above embodiments, except that, as shown in the following... Figure 4 As shown, a level gauge 19 is installed on the top of the water tank 17. When the liquid reaches the set level, the level gauge 19 is triggered to send a signal, liquid replenishment stops, and the centrifugal pump 22 starts working. The above actions are required for the first use. When there is no cooling medium in the system, the steps need to be performed. When the system is full of liquid cooling medium, the centrifugal pump 22 can work directly.

[0034] In other specific embodiments of this utility model, the remainder is the same as the above embodiments, except that, as shown in the following... Figure 4 As shown, a top manual ball valve 18 is provided on the top of the water tank 17, and a bottom manual ball valve 39 is provided on the bottom of the water tank 17. When it is necessary to clean the inside or replace the internal heat dissipation medium, the bottom manual ball valve 39 of the water tank 17 can be opened. When draining the liquid, the top manual ball valve 18 needs to be opened, and the liquid will be naturally discharged out of the water tank 17 due to atmospheric pressure and gravity.

[0035] In other specific embodiments of this utility model, the remainder is the same as the above embodiments, except that, as shown in the following... Figure 1 As shown, the upper housing 3 is provided with a side door 4, which facilitates opening the housing 5 for internal maintenance.

[0036] Based on the above embodiments, the working process of this utility model is as follows: In use, the charging pile liquid cooling system is installed on the top of the charging pile. The first inlet pipe 10 and the second inlet pipe 11 are connected to the internal heat dissipation pipe of the charging pile. The first output pipe 13 and the second output pipe 12 are connected to the internal heat dissipation return pipe of the charging pile. When the cooling system is used for the first time, cooling medium needs to be added to the system. The detailed steps are as follows: the inlet replenishment pipe 15 is connected to a container containing liquid cooling medium. When the self-priming pump 14 is working, a negative pressure is formed, and the liquid cooling medium is drawn into the inlet replenishment pipe 15 through the negative pressure. After passing through the self-priming pump 14, the medium is output from the outlet replenishment pipe 16 into the water tank 17. When the self-priming pump 14 replenishes the liquid, the manual ball valve 18 on the top of the water tank needs to be opened to vent the gas. Otherwise, the system will be in a closed state, and the internal gas cannot be discharged during replenishment, causing the internal components to expand and damage themselves. When the liquid level in water tank 17 reaches a certain point, the liquid flows out from port 20 and into centrifugal pump 22 along the first main pipe 21. When centrifugal pump 22 is full, it meets the operating conditions (this pump has no suction and must be completely filled with liquid to operate). When the liquid reaches the set level, the level gauge 19 on top of water tank 17 sends a signal, stopping the liquid replenishment and starting the centrifugal pump. The above steps are required for the first use. If there is no cooling medium in the system, these steps must be followed. When the system is full of liquid cooling medium, the centrifugal pump can operate directly.

[0037] Once the water tank 17 is full of medium, the centrifugal pump 22 meets the operating conditions and starts working. Liquid enters the flow meter 24 from the second main pipe 23. The flow meter 24 provides feedback based on the real-time flow rate to determine if the current operating flow rate is normal. After passing through the flow meter 24, the liquid enters the distributor 26 along the third main pipe 25. At this point, the liquid splits into two streams, flowing from the first inlet pipe 10 and the second inlet pipe 11 into the charging pile for heat dissipation. After the liquid dissipates heat from the heat source inside the charging pile, the heat has been transferred to the liquid, which is now at a high temperature. It then flows back to the cooling system for further heat dissipation. The liquid then splits into two streams. The first stream flows from the first output pipe 13 into the first air-cooled heat exchanger 27. The first air-cooled heat exchanger 27 is equipped with a first temperature sensor 28, which provides temperature feedback to determine if the high-temperature liquid output from the charging pile is normal. As the first high-temperature liquid passes through the first air-cooled heat exchanger 27, temperature is transferred from the liquid to the first air-cooled heat exchanger 27, where it is cooled by airflow. After the first stream of high-temperature liquid completely passes through the first air-cooled heat exchanger 27, it completes heat dissipation and cooling. It then flows from the first return pipe 29 to the filter manifold 30 for impurity filtration, before flowing into the water tank 17 to mix and store with the internal liquid. The cooled liquid has a different temperature than the liquid inside the tank, and the temperature decreases again after mixing. The second stream of liquid exits from the second output pipe 12, flows into the transfer pipe 31, and then through the test pipe 32 into the test module 33. This test module 33 is equipped with a manual ball valve test port 34 and a second temperature sensor 35. The manual ball valve test port 34 must be opened to perform actions such as venting, draining, and pressure testing on this pipeline. The second temperature sensor 35 provides temperature feedback on the high-temperature liquid output from the charging pile to determine if it is normal. After passing through the test module 33, the high-temperature liquid enters the second air-cooled heat exchanger 36. Temperature transfer occurs as the liquid passes through the second air-cooled heat exchanger 36, where it is cooled by airflow. Once the high-temperature liquid has completely passed through the second air-cooled heat exchanger 36, it completes heat dissipation and cooling. It then flows from the second return pipe 37 to the filter manifold 30, where it is filtered before flowing into the water tank for mixing and storage. Both liquid media are processed simultaneously. Finally, the temperature of the mixed liquid can be monitored in real time by the third temperature sensor 38 to determine if the temperature is normal. When internal cleaning or replacement of the internal heat dissipation medium is required, the bottom manual ball valve 39 of the water tank 17 can be opened. For drainage, the top manual ball valve 18 must be opened, allowing the liquid to drain naturally from the water tank 17 due to atmospheric pressure and gravity.

[0038] Note that the above description is merely a preferred embodiment of the present invention. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and various obvious changes, readjustments, and substitutions can be made without departing from the scope of protection of the present invention. Therefore, although the present invention has been described in detail through the above embodiments, the present invention is not limited to the above embodiments, and may include many other equivalent embodiments without departing from the concept of the present invention. The scope of the present invention is determined by the scope of the appended claims.

Claims

1. A charging pile liquid cooling heat dissipation system, characterized in that, Including box, self-priming pump, water tank, centrifugal pump, flow meter, first access pipeline and first output pipeline;The water tank and self-priming pump are arranged in the box;The self-priming pump is connected with the water tank through the output liquid supplement pipeline, the port of the water tank is connected with the liquid inlet end of the centrifugal pump through the first main pipeline, the liquid outlet end of the centrifugal pump is connected with the flow meter through the second main pipeline, the flow meter is connected with the first access pipeline, and the first access pipeline accesses the internal heat dissipation pipeline of the charging pile;The first output pipeline is connected with the internal heat dissipation return pipeline of the charging pile, and the first output pipeline is connected back to the water tank through the first liquid return pipeline.

2. The charging pile liquid cooling heat dissipation system according to claim 1, characterized in that, The flow meter is connected with a flow divider through a third main pipeline, the flow divider is connected with a first access pipeline and a second access pipeline respectively, the first access pipeline and the second access pipeline access the internal heat dissipation pipeline of the charging pile;The second output pipeline and the first output pipeline are connected with the internal return pipeline of the charging pile, the first output pipeline is connected back to the water tank through the first liquid return pipeline, and the second output pipeline is connected back to the water tank through the second liquid return pipeline.

3. The charging pile liquid cooling heat dissipation system according to claim 2, characterized in that, The box is provided with a forced air cooling system, the forced air cooling system comprises first and second fans;The first and second fans are arranged on the top of the upper shell of the box, and the upper shell is provided with first and second front air vents on one side and first and second rear air vents on the opposite side.

4. The charging pile liquid cooling heat dissipation system according to claim 3, characterized in that, The box is provided with first and second air-cooled heat exchangers;The first output pipeline and the first liquid return pipeline are connected with the first air-cooled heat exchanger, and the first air-cooled heat exchanger is provided with a first temperature sensor.

5. The charging pile liquid cooling heat dissipation system according to claim 3, characterized in that, The first and second liquid return pipelines are connected with the water tank through a filtering junction.

6. The charging pile liquid cooling heat dissipation system according to claim 4, characterized in that, The second output pipeline and the second air-cooled heat exchanger are connected with a test module, the second output pipeline is connected with the test module through a switching pipeline and a test pipeline, and the test module is provided with a manual ball valve test port and a second temperature sensor.

7. The charging pile liquid cooling heat dissipation system according to claim 6, characterized in that, The water tank is provided with a third temperature sensor. 8.The charging pile liquid cooling heat dissipation system according to claim 1 or 2, characterized in that, The water tank is provided with a liquid level meter on the top.

9. The charging pile liquid cooling heat dissipation system according to claim 1 or 2, characterized in that, The water tank is provided with a top manual ball valve on the top and a bottom manual ball valve at the bottom.

10. The charging pile liquid cooling heat dissipation system according to claim 3, characterized in that, The upper shell is provided with a side door.

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