Multi-channel heat dissipation type new energy charging pile

Abstract

The application relates to the technical field of charging piles, and aims to provide a multi-channel heat dissipation type new energy charging pile, which comprises a pile shell and a cooling liquid storage area arranged at the bottom of the pile shell; a vertical inverted U-shaped cooling circulation pipe is arranged in the pile shell, the two ends of the cooling circulation pipe are communicated with the cooling liquid storage area, and the cooling circulation pipe is used for providing a circulation channel for the cooling liquid; a plurality of carrier plates for mounting electrical elements are further arranged in the pile shell, heat exchange parts are arranged on the carrier plates, the heat exchange parts are sleeved outside the cooling circulation pipe, and the heat exchange parts are used for realizing heat exchange between the cooling circulation pipe and the carrier plates. The application can flexibly cool and distribute the carrier plates in different areas of the pile shell, can realize targeted heat dissipation of the corresponding carrier plates and the electrical elements thereon, and can flexibly adjust a heat dissipation strategy according to real-time heat dissipation requirements.

Description

Technical Field

[0001] This invention relates to the field of charging pile technology, specifically to a multi-channel heat dissipation type new energy charging pile. Background Technology

[0002] With the rapid development of new energy vehicles, the market demand for charging piles, as an important supporting facility, is increasing daily. However, in actual use, charging piles are prone to overheating during high-power charging due to the large amount of heat generated by internal electronic components and power modules, which in turn affects the stability and lifespan of the equipment. Currently, new energy charging piles on the market typically adopt a single-channel heat dissipation design, such as forced air cooling by fans or passive heat dissipation by simple heat sinks. However, these heat dissipation methods have the following shortcomings: on the one hand, single-channel heat dissipation efficiency is low, making it difficult to meet the rapid heat dissipation requirements of high-power charging piles; on the other hand, existing heat dissipation systems lack targeted cooling for different heat-generating areas, which can easily lead to localized overheating, resulting in equipment performance degradation or even failure. Summary of the Invention

[0003] The purpose of this invention is to provide a multi-channel heat dissipation type new energy charging pile that can flexibly distribute heat dissipation for high-heat areas.

[0004] To achieve the above-mentioned objectives, the technical solution adopted by the present invention is: a multi-channel heat dissipation type new energy charging pile, including a pile shell and a coolant storage area disposed at the bottom of the pile shell;

[0005] The interior of the pile shell is equipped with a vertical inverted U-shaped cooling circulation pipe, the two ends of which are connected to the coolant storage area to provide a circulation channel for the coolant.

[0006] The pile shell is also provided with several carrier plates for installing electrical components. The carrier plates are provided with heat exchange parts that are sleeved on the outside of the cooling circulation pipe and used to realize heat exchange between the cooling circulation pipe and the carrier plate.

[0007] The heat exchange section is provided with sleeves at both ends, and is connected to the cooling circulation pipe through the sleeves; a liquid injection chamber is provided on the sleeves surrounding the cooling circulation pipe; a liquid injection mechanism is provided in the middle of the heat exchange section, which can inject heat exchange liquid into the liquid injection chamber. The liquid injection mechanism adjusts the heat exchange performance between the corresponding carrier plate and the cooling circulation pipe by changing the volume of heat exchange liquid in the liquid injection chamber.

[0008] Preferably, the liquid injection mechanism includes a liquid storage tank located at the center of the heat exchange section and an elastic silicone liquid bladder located in the liquid injection chamber; the liquid storage tank and the elastic silicone liquid bladder are connected by a liquid injection pipe, and a first electrically controlled valve is provided on the liquid injection pipe; a micro pump is provided in the liquid storage tank for transporting the heat exchange liquid stored inside to the elastic silicone liquid bladder.

[0009] Preferably, the casing is provided with an exhaust port that connects the injection chamber and the space inside the pile shell.

[0010] Preferably, a number of horizontal connecting pipes are provided between the two vertical pipe sections of the cooling circulation pipe, and a second electrically controlled valve is provided on the connecting pipe.

[0011] Preferably, each of the carrier plates is equipped with a temperature sensor for detecting the temperature of the carrier plate, and the temperature sensor, the micro pump, the first electrically controlled valve and the second electrically controlled valve are all electrically connected to the controller.

[0012] Preferably, a connecting pipe is provided above each of the carrier plates, and the connecting pipe at the top is composed of a horizontal section of a cooling circulation pipe.

[0013] Preferably, the coolant storage area includes, from top to bottom, a reflux chamber, a coolant heat dissipation chamber, and a reservoir chamber. The reflux chamber and the reservoir chamber are connected by a short heat dissipation pipe installed in the coolant heat dissipation chamber. One end of the cooling circulation pipe is connected to the reflux chamber, and the other end is connected to the reservoir chamber. A circulation pump for pumping coolant into the cooling circulation pipe is installed in the reservoir chamber.

[0014] Preferably, a cooling vent is provided on one side of the coolant heat dissipation chamber, a first filter screen is provided inside the cooling vent, and a coolant heat dissipation fan is provided on the other side to exhaust air from the coolant heat dissipation chamber to the outside.

[0015] Preferably, an outer casing is also provided outside the pile shell, and a heat dissipation air duct is formed between the side wall of the casing and the side wall of the pile shell. An air inlet is provided on the lower side wall of the casing, and a second filter is provided at the air inlet. A top exhaust vent is provided on the top of the outer casing, and a pile shell heat dissipation fan that exhausts air from bottom to top is provided in the top exhaust vent. A herringbone-shaped top plate is also provided on the top of the outer casing, and the top plate is located above the top exhaust vent.

[0016] Preferably, the sidewall of the pile shell is provided with a plurality of vertically extending, outwardly protruding ridges, and the ridges form a drainage channel.

[0017] The beneficial effects of this invention are mainly reflected in its ability to flexibly distribute cooling across different areas of the carrier plate within the pile shell, enabling targeted heat dissipation for the corresponding carrier plate and its electrical components, and allowing for flexible adjustment of the heat dissipation strategy based on real-time heat dissipation requirements. Specifically, this invention mounts electrical components (charger modules, transformers, relays, etc.) on the carrier plate for use, with heat primarily exchanged between the carrier plate and the cooling circulation pipes. Since there is no need for direct gas exchange with the outside environment, the overall cleanliness is high, and the electrical components inside the pile shell are largely unaffected by dust, maintaining excellent heat dissipation performance. When the local temperature is high, it can be simply considered that the temperature in a certain area of ​​the carrier plate is too high. Heat exchange fluid is injected into the corresponding injection chamber through the injection mechanism. The heat exchange fluid fills the inner cavity of the injection chamber. By changing the volume of the injected heat exchange fluid, this invention can achieve complete or partial filling of the key heat exchange nodes (sleeves) of the carrier plate and cooling circulation pipe, thereby changing the heat transfer efficiency between the carrier plate and the cooling circulation pipe at the corresponding location. In other words, within one circulation cycle of the coolant, the amount of heat removed from different carrier plates is different. For carrier plates in high-heat-generating areas, the amount of heat exchange fluid in the injection chamber of the corresponding sleeve is larger (even to the point of being full), and conversely, for carrier plates in relatively low-heat-generating areas, the amount of heat exchange fluid in the injection chamber of the corresponding sleeve is smaller (or even not filled). This invention takes a different approach, using heat exchange control at each location to achieve targeted heat dissipation adjustment. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the internal structure of the present invention;

[0019] Figure 2 for Figure 1 Enlarged view of section A in the middle;

[0020] Figure 3 for Figure 1 Enlarged view of section B in the middle;

[0021] Figure 4 This is a schematic diagram of the cross-section of the side wall of the pile shell. Detailed Implementation

[0022] like Figure 1 As shown, the present invention is a new energy charging pile, which adopts a combination of air cooling and liquid cooling. Air cooling meets the conventional heat dissipation requirements, while contact liquid cooling is used to dissipate heat quickly when there is a large amount of heat in a local area. It has liquid cooling and air cooling multi-channel heat dissipation functions, which can realize flexible heat dissipation.

[0023] like Figure 1As shown, the present invention includes a pile shell 1 and a coolant storage area 2 disposed at the bottom of the pile shell 1. The pile shell 1 adopts a sealed shell structure, and the internal heat is mainly dissipated through air cooling in the pile shell 1. Its specific structure is as follows, Figure 1 As shown, a housing 23 is also provided outside the pile housing 1. A heat dissipation duct 24 is formed between the side wall of the housing 23 and the side wall of the pile housing 1. An air inlet is provided on the lower side wall of the housing 23, and a second filter 25 is provided at the air inlet. A top exhaust vent is provided on the top of the housing, and a pile housing heat dissipation fan 26 that exhausts air from bottom to top is provided inside the top exhaust vent. A herringbone-shaped top plate 27 is also provided on the top of the housing 23, and the top plate 27 is located above the top exhaust vent.

[0024] When the air-cooling system is working, heat inside the pile shell 1 is conducted to the surface of the pile shell 1, where it exchanges heat with the air. The cooling fan 26 operates, expelling the air that has exchanged heat with the pile shell 1 from the top exhaust vent within the cooling duct 24 between the pile shell 1 and the pile shell 23. Due to the top exhaust design, the airflow within the cooling duct 24 generally forms a chimney effect, with outside air continuously entering the cooling duct 24 through the inlet after being filtered by the second filter 25. Furthermore, to further enhance convection and increase the heat exchange area between the air within the cooling duct 24 and the pile shell 1, such as... Figure 4 As shown, the sidewall of the pile shell 1 is provided with a plurality of vertically extending outward protruding ridges 28, and the ridges 28 form a drainage channel 29.

[0025] The liquid cooling heat dissipation of this invention is achieved through the following scheme, such as... Figure 1 As shown, a vertical inverted U-shaped cooling circulation pipe 3 is installed inside the pile shell 1. Both ends of the cooling circulation pipe 3 are connected to the coolant storage area 2 to provide a circulation channel for the coolant. That is, the overall circulation of the coolant is as follows: it flows in from one end of the cooling circulation pipe 3, flows through the cooling circulation pipe 3, and then flows back to the coolant storage area 2 from the other end of the cooling circulation pipe 3.

[0026] To facilitate the installation of electrical components such as transformers, charger modules, relays, and protectors, the housing 1 of this invention is further equipped with several carrier plates 4 for mounting electrical components. The carrier plates 4 are made of a highly thermally conductive material, which effectively absorbs the heat emitted by the electrical components. Through heat exchange between the carrier plates 4 and the coolant in the cooling circulation pipe 3, the heat from the electrical components on the carrier plates 4 is dissipated.

[0027] To ensure the heat exchange performance between the carrier plate 4 and the cooling circulation pipe 3, combined with Figure 1 and 2As shown, the carrier plate 4 is provided with a heat exchange section 5, which is sleeved on the outside of the cooling circulation pipe 3 and used to realize heat exchange between the cooling circulation pipe 3 and the carrier plate 4. The heat exchange section 5 is generally located on the rear side of the carrier plate 4, which serves as both a mounting base for part of the carrier plate 4 and a heat exhaust node for the carrier plate 4. The two ends of the heat exchange section 5 are provided with sleeves 6, which are sleeved on the cooling circulation pipe 3. The core of the present invention is to match different heat exchange properties (more precisely, different heat exchange areas) between different carrier plates 4 and cooling circulation pipes 3, so that when a local high temperature occurs in the carrier plate 4, the heat can be quickly discharged through the high heat exchange performance of the corresponding position.

[0028] like Figure 2 As shown, a liquid injection chamber 7 is specifically provided on the sleeve 6, surrounding the cooling circulation pipe 3. The heat exchange section 5 is provided with a liquid injection mechanism in the middle, which can inject heat exchange fluid into the liquid injection chamber 7. The liquid injection mechanism adjusts the heat exchange performance between the corresponding carrier plate 4 and the cooling circulation pipe 3 by changing the volume of heat exchange fluid in the liquid injection chamber 7.

[0029] This invention mounts electrical components (charger modules, transformers, relays, etc.) on a carrier plate 4 for use, and heat is mainly exchanged between the carrier plate 4 and the cooling circulation pipe 3. Since there is no need for direct gas exchange with the outside environment, the overall cleanliness is high, and the electrical components inside the pile shell 1 are basically not affected by dust, thus maintaining good heat dissipation performance. When the local temperature is high, it can be simply considered that the temperature in a certain area of ​​the carrier plate 4 is too high. Heat exchange fluid is injected into the corresponding injection chamber 7 through the injection mechanism. The heat exchange fluid fills the inner cavity of the injection chamber 7. By changing the volume of the injected heat exchange fluid, this invention can achieve complete or partial filling of the key heat exchange nodes (sleeve 6) of the carrier plate 4 and the cooling circulation pipe 3, thereby changing the heat transfer efficiency between the carrier plate 4 and the cooling circulation pipe 3 at the corresponding location. That is, within one circulation cycle of the coolant, the heat removed from different carrier plates 4 is different. For carrier plates 4 in high-heat areas, the amount of heat exchange fluid in the injection chamber 7 of the corresponding sleeve 6 is larger (even to the point of being full), and conversely, for carrier plates 4 in relatively low-heat areas, the amount of heat exchange fluid in the injection chamber 7 of the corresponding sleeve 6 is smaller (or even not filled). This invention takes a different approach, using heat exchange control at each location to achieve targeted heat dissipation adjustment.

[0030] There are various structural forms for the liquid injection mechanism. For example, the liquid injection mechanism includes a storage tank 8 located at the center of the heat exchange section 5 and an elastic silicone liquid bladder 9 located inside the injection chamber 7. The storage tank 8 and the elastic silicone liquid bladder 9 are connected by an injection pipe 10, and a first electrically controlled valve 11 is installed on the injection pipe 10. A micro pump is installed inside the storage tank 8 to transport the heat exchange liquid stored inside to the elastic silicone liquid bladder 9. After the first electrically controlled valve 11 is opened, the micro pump can quickly transport the heat exchange liquid from the injection pipe 10 to the elastic silicone liquid bladder 9. The elastic silicone liquid bladder 9 is made of silicone material with good thermal conductivity and elasticity. As the heat exchange liquid is injected, the elastic silicone liquid bladder 9 expands and fills the injection chamber 7 together with the heat exchange liquid. By controlling the volume of the injected heat exchange liquid, the filling amount in the injection chamber 7 can be changed. Theoretically, when the filling amount reaches its maximum, the heat exchange effect is optimal because there is no air obstruction. When an increase in thermal resistance is required, the first electrically controlled valve 11 opens, and under the elastic action of the elastic silicone liquid bladder 9, the heat exchange fluid can be forced back into the storage tank 8. Alternatively, by setting up a corresponding return pipeline, a micro-pump can be used to pump the heat exchange fluid back into the elastic silicone liquid bladder 9. To allow air to escape from the injection chamber 7 or to replenish external air, the sleeve 6 is equipped with an exhaust port 12 connecting the injection chamber 7 to the space inside the pile shell 1.

[0031] In order to achieve faster liquid cooling of local high-heat areas during the continuous circulation of coolant in the cooling circulation pipe 3, this invention, based on the heat exchange section 5, can further change the circulation mode of the coolant by altering the circulation path of the cooling circulation pipe 3. For example, for high-heat areas, a large amount or all of the coolant can be switched to the cooling circulation pipe 3 corresponding to that heat-generating area for rapid circulation. Figure 1 As shown, several horizontal connecting pipes 13 are also provided between the two vertical pipe sections of the cooling circulation pipe 3, and a second electrically controlled valve 14 is provided on each connecting pipe 13. Typically, a connecting pipe 13 is provided above each of the carrier plates 4, with the topmost connecting pipe 13 consisting of the horizontal pipe sections of the cooling circulation pipe 3. Each carrier plate 4 is provided with a temperature detection sensor 15 for detecting the temperature of the carrier plate 4. The temperature detection sensor 15, the micro pump, the first electrically controlled valve 11, and the second electrically controlled valve 14 are all electrically connected to the controller. Figure 1 The diagram shows only an example of three carrier plates 4 and three connecting pipes 13. In actual applications, more carrier plates 4 and connecting pipes 13 can be designed according to the size of the charging pile.

[0032] When the temperature sensor 15 detects that the corresponding carrier plate 4 has a high temperature and requires rapid heat dissipation, in addition to filling the corresponding liquid injection chamber 7 with heat exchange fluid to improve the heat exchange performance of that part, the effective circulation section of the cooling circulation pipe 3 can also be switched, for example: Figure 1 As shown, when high-power heat dissipation is required for the middle layer of carrier plate 4, the liquid injection chamber 7 corresponding to the middle layer of carrier plate 4 is filled with heat exchange liquid, and the second electrically controlled valve 14 on one of the middle connecting pipes 12 is opened (the second electrically controlled valves 14 on the other two connecting pipes 12 are closed). At this time, under the same cycle drive power, since the circulation path of the coolant is relatively shorter, it can circulate more times in the middle section, thereby taking away more heat from this part.

[0033] Regarding the specific circulation method of the coolant in the cooling water storage area 2 and the cooling circulation pipe 3, as follows: Figure 1 and 3 As shown, the coolant storage area 2 includes, from top to bottom, a reflux chamber 16, a coolant heat dissipation chamber 17, and a reservoir chamber 18. The reflux chamber 16 and the reservoir chamber 18 are connected by a heat dissipation short pipe 19 disposed within the coolant heat dissipation chamber 17. One end of the cooling circulation pipe 3 is connected to the reflux chamber 16, and the other end is connected to the reservoir chamber 18. A circulation pump 20 for pumping coolant into the cooling circulation pipe 3 is disposed within the reservoir chamber 18. A cooling air vent is disposed on one side of the coolant heat dissipation chamber 17, and a first filter screen 21 is disposed within the cooling air vent. A coolant cooling fan 22 for exhausting air from the coolant heat dissipation chamber 17 is disposed on the other side.

[0034] The coolant that has undergone heat exchange can flow back to the return chamber 16 and disperse from the return chamber 16 into several heat dissipation short pipes 19. The airflow in the coolant heat dissipation chamber 17 carries away the heat in the coolant. After the coolant is cooled, it flows back to the storage chamber 18 and re-enters the cooling cycle under the pumping of the circulation pump 20.

Claims

1. A multi-channel heat dissipation type new energy charging pile, characterized in that: Includes a pile shell (1) and a coolant storage area (2) located at the bottom of the pile shell (1); The interior of the pile shell (1) is provided with a vertical inverted U-shaped cooling circulation pipe (3), and the two ends of the cooling circulation pipe (3) are respectively connected to the coolant storage area (2) to provide a circulation channel for the coolant; The pile shell (1) is also provided with several carrier plates (4) for installing electrical components. The carrier plate (4) is provided with a heat exchange part (5) that is sleeved on the outside of the cooling circulation pipe (3) and is used to realize heat exchange between the cooling circulation pipe (3) and the carrier plate (4). The heat exchange section (5) is provided with sleeves (6) at both ends, and is connected to the cooling circulation pipe (3) through the sleeves (6); a liquid injection chamber (7) is provided on the sleeve (6) surrounding the cooling circulation pipe (3); a liquid injection mechanism is provided in the middle of the heat exchange section (5) to inject heat exchange liquid into the liquid injection chamber (7), and the liquid injection mechanism adjusts the heat exchange performance between the corresponding carrier plate (4) and the cooling circulation pipe (3) by changing the volume of heat exchange liquid in the liquid injection chamber (7); The liquid injection mechanism includes a liquid storage tank (8) located at the center of the heat exchange section (5) and an elastic silicone liquid bladder (9) located in the liquid injection chamber (7); the liquid storage tank (8) and the elastic silicone liquid bladder (9) are connected by a liquid injection pipe (10), and a first electrically controlled valve (11) is provided on the liquid injection pipe (10); a micro pump is provided in the liquid storage tank (8) for transporting the heat exchange liquid stored inside to the elastic silicone liquid bladder (9).

2. The multi-channel heat dissipation type new energy charging pile according to claim 1, characterized in that: The casing (6) is provided with an exhaust port (12) that connects the injection chamber (7) with the space inside the pile shell (1).

3. The multi-channel heat dissipation type new energy charging pile according to claim 2, characterized in that: Several horizontal connecting pipes (13) are also provided between the two vertical pipe sections of the cooling circulation pipe (3), and a second electrically controlled valve (14) is provided on the connecting pipe (13).

4. The multi-channel heat dissipation type new energy charging pile according to claim 3, characterized in that: Each of the carrier plates (4) is provided with a temperature detection sensor (15) for detecting the temperature of the carrier plate (4). The temperature detection sensor (15), the micro pump, the first electrically controlled valve (11) and the second electrically controlled valve (14) are all electrically connected to the controller.

5. The multi-channel heat dissipation type new energy charging pile according to claim 4, characterized in that: Each of the carrier plates (4) is provided with a connecting pipe (13) above it. The connecting pipe (13) at the top is composed of a horizontal pipe section of the cooling circulation pipe (3).

6. The multi-channel heat dissipation type new energy charging pile according to claim 5, characterized in that: The coolant storage area (2) includes, from top to bottom, a return chamber (16), a coolant heat dissipation chamber (17), and a reservoir (18). The return chamber (16) and the reservoir (18) are connected by a heat dissipation short pipe (19) installed in the coolant heat dissipation chamber (17). One end of the cooling circulation pipe (3) is connected to the return chamber (16), and the other end is connected to the reservoir (18). The reservoir (18) is equipped with a circulation pump (20) for pumping coolant into the cooling circulation pipe (3).

7. The multi-channel heat dissipation type new energy charging pile according to claim 6, characterized in that: A cooling vent is provided on one side of the coolant heat dissipation chamber (17), and a first filter screen (21) is provided inside the cooling vent. A coolant heat dissipation fan (22) is provided on the other side to exhaust air from the coolant heat dissipation chamber (17) to the outside.

8. The multi-channel heat dissipation type new energy charging pile according to claim 7, characterized in that: The pile shell (1) is also provided with a housing (23). The side wall of the housing (23) and the side wall of the pile shell (1) form a heat dissipation duct (24). An air inlet is provided on the lower side wall of the housing (23). A second filter screen (25) is provided at the air inlet. A top exhaust vent is provided on the top of the housing (23). A pile shell heat dissipation fan (26) that exhausts air from bottom to top is provided in the top exhaust vent. A herringbone-shaped top plate (27) is also provided on the top of the housing (23). The top plate (27) is located above the top exhaust vent.

9. The multi-channel heat dissipation type new energy charging pile according to claim 8, characterized in that: The sidewall of the pile shell (1) is provided with a number of vertically extending outward protruding ridges (28), and the ridges (28) form a drainage channel (29).

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