A high-efficiency thermal management device for a high-power direct-current charging pile

Abstract

This utility model discloses a high-efficiency thermal management device for a high-power DC charging pile, including a modular assembly housing and a heat dissipation duct, a heat-conducting substrate, a heat dissipation substrate A, and a heat dissipation substrate B installed therein. The outer panel of the assembly housing has a top exhaust vent and a bottom inlet. The heat dissipation duct adopts a combined vertical and horizontal duct design, achieving smooth airflow transition through an arc-shaped duct. The heat-conducting substrate is in direct contact with the high-voltage module area of ​​the charging pile, and heat is rapidly conducted to heat dissipation substrates A and B through vacuum heat pipes. The inner heat dissipation fins of heat dissipation substrate A extend into the heat dissipation duct, while heat dissipation substrate B has both inner heat dissipation fins and outer heat dissipation fins extending to the outer side of the housing. Multiple cooling fans are arranged at the exhaust vent, and both the inlet and exhaust vents are equipped with opening and closing components to adjust the vent opening. This composite heat dissipation method improves heat exchange efficiency, achieving an optimized balance between heat dissipation performance and environmental adaptability.

Description

Technical Field

[0001] This utility model relates to the field of charging pile technology, specifically to a high-efficiency thermal management device for a high-power DC charging pile. Background Technology

[0002] With the rapid popularization of new energy vehicles, the demand for high-power DC charging piles, as their core supporting facilities, is increasing daily. However, during high-power charging, core components such as charging modules generate a large amount of heat. If heat cannot be dissipated effectively and in a timely manner, the equipment temperature will become too high, affecting charging efficiency, component lifespan, and even causing safety hazards. Therefore, efficient and reliable thermal management technology has become one of the key challenges in the design of high-power DC charging piles.

[0003] Currently, common charging pile cooling solutions mainly rely on forced air cooling or liquid cooling technologies. Among them, air cooling systems are simple in structure and low in cost, but traditional air cooling designs often suffer from insufficient heat dissipation efficiency and unreasonable airflow organization, especially under high temperature or high load conditions, making it difficult to meet the heat dissipation requirements of high-power charging piles. In addition, existing air cooling systems mostly use a single heat dissipation path and a fixed heat dissipation fin layout, which cannot dynamically adjust the heat dissipation strategy according to changes in ambient temperature or load, resulting in high energy consumption or unstable heat dissipation performance.

[0004] On the other hand, some high-end charging piles use liquid cooling technology, which has high heat dissipation efficiency, but the system is complex, has high maintenance costs, and is subject to the risk of coolant leakage, which is not conducive to large-scale commercial application. In addition, existing heat dissipation devices are not well adapted to extreme weather conditions (such as rain, snow, and high temperatures). For example, in rainy or snowy weather, moisture may be drawn into the air inlet, causing a short circuit, while in high-temperature environments, insufficient heat dissipation may cause the equipment to overheat. Utility Model Content

[0005] In view of the above-mentioned shortcomings in the existing technology, the purpose of this utility model is to provide a high-efficiency thermal management device for high-power DC charging piles, which has outstanding advantages in terms of heat dissipation efficiency, environmental adaptability, reliability and maintenance convenience, and can effectively meet the high-efficiency heat dissipation requirements of high-power DC charging piles and ensure long-term stable operation of the equipment.

[0006] The technical solution adopted by this utility model to achieve the above-mentioned objectives is as follows: a high-efficiency thermal management device for a high-power DC charging pile, comprising an assembly housing and a heat dissipation duct, a heat-conducting substrate, a heat dissipation substrate A, and a heat dissipation substrate B installed in the assembly housing. The assembly housing is nested and fixed in the charging pile, with its outer panel exposed to the outside of the charging pile. The outer panel of the assembly housing has an exhaust port arranged at the top and an air inlet arranged at the bottom. The heat dissipation duct is fixedly installed in the assembly housing, with both ends connected to the exhaust port and the air inlet. The heat-conducting substrate is fixedly installed in the inner panel of the assembly housing. The heat dissipation substrate A and the heat dissipation substrate B are respectively assembled on both sides of the heat dissipation duct. Both the heat dissipation substrate A and the heat dissipation substrate B are provided with inner heat dissipation fins extending into the heat dissipation duct. The heat dissipation substrate B is also provided with outer heat dissipation fins extending to the outer panel of the assembly housing. The heat-conducting substrate is connected to the heat dissipation substrate A and the heat dissipation substrate B through a vacuum heat pipe.

[0007] It also includes a cooling fan and an opening and closing assembly. The cooling fan includes multiple sets arranged closely at the exhaust port. The air inlet and exhaust port are both equipped with opening and closing assemblies, which are used to adjust the opening size of the air inlet and exhaust port.

[0008] In the above technical solution, in order to ensure that the heat dissipation air duct can be stably installed in the assembly housing and to achieve docking with the air inlet and exhaust outlet, the following technical solution is provided.

[0009] The assembly housing has a vertically arranged plate fixedly connected to it. The heat dissipation duct includes a vertically arranged duct and a horizontally arranged duct connected to both ends of the vertical duct. The vertical duct and the horizontal duct are connected by an arc-shaped duct. The internal heat dissipation fins are all arranged in the vertical duct. The vertical duct is fixedly installed on the vertical plate. The two sets of horizontal ducts are respectively connected to the air inlet and the air outlet.

[0010] In the above technical solution, in order to ensure that heat dissipation substrate A and heat dissipation substrate B can be stably installed on both sides of the heat dissipation air duct, and to ensure that the external heat dissipation fins are not exposed after extending out of the outer panel of the assembly housing, thus affecting the overall aesthetics, the following technical solution is provided.

[0011] The heat dissipation substrate A is fixedly installed on the vertical plate. The outer panel of the assembly housing is provided with a recessed receiving groove. The heat dissipation substrate B is fixedly installed on the inner side of the outer panel of the assembly housing and arranged at the receiving groove position. The external heat dissipation fins are arranged in the receiving groove.

[0012] In the above technical solutions, in order to ensure that the cooling fan can be stably installed at the exhaust port and to ensure the dustproof and rainproof effect of the cooling air duct, the following technical solutions are provided.

[0013] A mounting pad is fixedly connected to the horizontal air duct at the top, and the cooling fan is fixedly installed on the mounting pad; dustproof nets are fixedly installed on the outer sides of the air inlet and air outlet, and a rain shelter arranged around the dustproof net is fixedly installed on the outer panel.

[0014] In the above technical solution, in order to ensure that the opening and closing components can be stably installed at the air inlet and air outlet and to achieve adjustment of the opening size, the following technical solution is provided.

[0015] The opening and closing assembly includes a stop bar, a connecting rod, and an electric telescopic rod. The stop bar comprises multiple sets evenly arranged, each set of stop bars being rotatably installed into the rain shelter and attached to the dustproof net. The connecting rod is arranged along the direction of the stop bar arrangement, and the connecting rods of each set of stop bars are evenly connected and hinged. The fixed end of the electric telescopic rod is hinged into the rain shelter, and the movable end of the electric telescopic rod is hinged to one of the sets of stop bars.

[0016] The beneficial effects of this utility model are:

[0017] 1. High-efficiency heat dissipation: Utilizing a composite heat dissipation solution of vacuum heat pipes and dual heat dissipation substrates, the heat from the charging module is rapidly transferred to the inner and outer heat dissipation fins through the efficient phase-change heat transfer characteristics of the heat pipes, significantly improving heat dissipation efficiency. The heat dissipation airflow adopts a combined vertical and horizontal design, coupled with multiple cooling fans for forced convection, allowing cool air to flow fully through the inner heat dissipation fins, enhancing heat exchange and ensuring stable heat dissipation during high-power charging.

[0018] 2. Adaptable to different working conditions, the temperature sensor monitors the temperature of the core heat-generating components in real time and dynamically adjusts the power of the cooling fan. It enhances heat dissipation under high temperature or high load and reduces energy consumption under low temperature or low load, achieving energy-saving operation. The opening and closing components can adjust the opening of the air inlet and exhaust outlet. In rainy or snowy weather, the opening is reduced to prevent moisture from entering. At the same time, the natural heat dissipation of the external heat dissipation fins is used to compensate for the reduction in air cooling efficiency and improve environmental adaptability.

[0019] 3. Dustproof and rainproof, highly reliable. The dustproof net and rainproof canopy design effectively prevent dust and rainwater from entering the heat dissipation duct, avoiding the decrease in heat dissipation performance or equipment damage caused by the accumulation of foreign objects or short circuits, thus extending the service life.

[0020] 4. Modular design facilitates installation and maintenance. The assembly housing adopts a standardized modular design, which can be quickly integrated into different models of charging piles, reducing production and maintenance costs. Key components such as heat dissipation ducts and heat dissipation base plates adopt a split layout, which facilitates disassembly and maintenance and improves maintainability.

[0021] 5. Balancing energy saving and noise reduction, when the ambient temperature is low, the fan speed can be reduced or the air duct can be partially closed, and passive heat dissipation can be achieved by using external heat dissipation fins to reduce energy consumption and noise, thereby improving the user experience.

[0022] In summary, the thermal management device proposed in this solution has outstanding advantages in terms of heat dissipation efficiency, environmental adaptability, reliability, and ease of maintenance. It can effectively meet the high-efficiency heat dissipation requirements of high-power DC charging piles and ensure the long-term stable operation of the equipment. Attached Figure Description

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

[0024] Figure 2 This is a structural schematic diagram from another perspective of the present invention;

[0025] Figure 3 This is a schematic diagram of the internal structure of the assembly housing;

[0026] Figure 4 This is a schematic diagram of the structure of the heat dissipation air duct and the heat-conducting substrate, heat dissipation substrate A, and heat dissipation substrate B.

[0027] Figure 5 A schematic diagram of the structure of the matching combination of thermally conductive substrate, heat dissipation substrate A, and heat dissipation substrate B;

[0028] Figure 6 This is a schematic diagram of the heat dissipation airflow duct structure;

[0029] Figure 7 A structural diagram showing the combination of dustproof netting, rain shelter, and opening / closing components;

[0030] Figure 8 This is a schematic diagram of the opening and closing component.

[0031] In the diagram: 1 Assembly housing, 11 Exhaust vent, 12 Air inlet, 13 Outer panel, 14 Inner panel, 15 Vertical plate, 16 Receiving slot, 17 Dustproof net, 18 Rain cover, 2 Heat dissipation duct, 21 Vertical duct, 22 Horizontal duct, 23 Arc-shaped duct, 24 Assembly pad, 31 Thermal conductive substrate, 32 Heat dissipation substrate A, 33 Heat dissipation substrate B, 34 Inner heat dissipation fins, 35 Outer heat dissipation fins, 36 Vacuum heat pipe, 4 Cooling fan, 5 Opening and closing assembly, 51 Baffle, 52 Connecting rod, 53 Electric telescopic rod. Detailed Implementation

[0032] 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.

[0033] Please see Figure 1-8 A high-efficiency thermal management device for a high-power DC charging pile includes an assembly housing 1 and a heat dissipation duct 2, a thermally conductive substrate 31, a heat dissipation substrate A32, and a heat dissipation substrate B33 installed in the assembly housing 1. The assembly housing 1 is nested and fixed to the charging pile, with its outer panel 13 exposed to the outside of the charging pile. The outer panel 13 of the assembly housing 1 has an exhaust port 11 at the top and an air inlet 12 at the bottom. The heat dissipation duct 2 is fixedly installed in the assembly housing 1, with both ends connected to the exhaust port 11 and the air inlet 12. The port 12 is kept in contact, and the heat-conducting substrate 31 is fixedly installed on the inner panel 14 of the assembly housing 1. The heat dissipation substrates A32 and B33 are respectively assembled on both sides of the heat dissipation duct 2. Both heat dissipation substrates A32 and B33 are provided with inner heat dissipation fins 34 extending into the heat dissipation duct 2. Heat dissipation substrate B33 is also provided with outer heat dissipation fins 35 extending into the outer panel 13 of the assembly housing 1. The heat-conducting substrate 31 is connected to the heat dissipation substrates A32 and B33 through the vacuum heat pipe 36.

[0034] It also includes a cooling fan 4 and an opening and closing assembly 5. The cooling fan 4 includes multiple sets arranged closely at the exhaust port 11. The opening and closing assembly 5 is installed at both the air inlet 12 and the exhaust port 11. The opening and closing assembly 5 is used to adjust the opening size of the air inlet 12 and the exhaust port 11.

[0035] The assembly housing 1 adopts a standardized modular design, which enables stable assembly in the charging pile and achieves efficient heat dissipation for the high-power DC charging pile. Since the high-power DC charging pile generates a lot of heat when charging new energy vehicles, the efficient thermal management device provided in this solution is adopted to meet the specific heat dissipation requirements of this type of charging pile for different working modes and environmental conditions.

[0036] The charging pile is divided into a high-voltage module area (core heat-generating components, such as the charging module) and a control module area. The two areas can be physically isolated by heat insulation baffles to reduce thermal interference. The high-voltage module area is in contact with the heat-conducting substrate 31, and the heat generated is directly absorbed by the heat-conducting substrate 31. The absorbed heat is quickly conducted to the inner heat dissipation fins 34 and outer heat dissipation fins 35 of the heat dissipation substrates A32 and B33 by utilizing the phase change principle of the vacuum heat pipe 36 (inner wall capillary structure).

[0037] When the cooling fan 4 is working, it can accelerate the outside air, which is introduced from the air inlet 12 at the bottom, flows along the cooling air duct 2 and is finally discharged from the exhaust port 11. The air entering the cooling air duct 2 fully exchanges heat with the two sets of internal heat dissipation fins 34 arranged in the cooling air duct 2, and carries the heat out from the exhaust port 11.

[0038] A temperature sensor can be installed at the core heat-generating component to detect its real-time temperature. This sensor can be used as a basis for adjusting the operating power of each cooling fan 4. When the heat dissipation demand increases, the operating power of the cooling fan 4 can be increased to meet the heat dissipation demand and ensure that the temperature of the charging pile is maintained at an appropriate level.

[0039] Since the external heat dissipation fins 35 are directly exposed to the external environment, a rust-preventive coating needs to be applied to their surface to allow for direct contact with the external environment for heat dissipation. This provides auxiliary heat dissipation in summer or when the external ambient temperature is high. In rainy or snowy weather, due to the low ambient temperature, to prevent the high-power operation of the cooling fan 4 from drawing rain and snow into the cooling duct 2, the operating power of the cooling fan 4 can be appropriately reduced. The openings of the air inlet 12 and the exhaust outlet 11 can be narrowed by adjusting the opening and closing component 5. However, in this situation, the increased temperature difference of the external heat dissipation fins 35 can improve heat dissipation efficiency, thus compensating for the loss of heat dissipation efficiency caused by the adjustment of the cooling fan 4 and the opening and closing component 5.

[0040] To ensure that the heat dissipation duct 2 can be stably installed in the assembly housing 1 and to connect with the air inlet 12 and the air outlet 11, the following technical solution is provided.

[0041] A vertical plate 15 arranged in a vertical direction is fixedly connected to the housing 1. The heat dissipation air duct 2 includes a vertical air duct 21 arranged in a vertical direction and a horizontal air duct 22 connected to both ends of the vertical air duct 21 and arranged horizontally. The vertical air duct 21 and the horizontal air duct 22 are connected by an arc-shaped air duct 23. The internal heat dissipation fins 34 are all arranged in the vertical air duct 21. The vertical air duct 21 is fixedly installed on the vertical plate 15. The two sets of horizontal air ducts 22 are respectively connected to the air inlet 12 and the air outlet 11.

[0042] The cooperation between the vertical plate 15 and the vertical air duct 21 ensures the stable installation of the heat dissipation air duct 2 in the assembly housing 1 and forms an airflow channel from bottom to top to efficiently dissipate heat from the internal heat dissipation fins 34 arranged in the vertical air duct 21.

[0043] The horizontal air duct 22 can effectively connect with the air inlet 12 and the air outlet 11, ensuring that air can enter and exit the heat dissipation air duct 2 normally. The arc-shaped air duct 23 can allow air to transition freely between the vertical air duct 21 and the horizontal air duct 22, avoiding the occurrence of local turbulence.

[0044] To ensure that heat dissipation substrates A32 and B33 can be stably installed on both sides of the heat dissipation duct 2, and to prevent the external heat dissipation fins 35 from being exposed after extending out of the outer panel 13 of the assembly housing 1 and affecting the overall aesthetics, the following technical solutions are provided.

[0045] The heat dissipation substrate A32 is fixedly installed on the vertical plate 15. The outer panel 13 of the assembly housing 1 is provided with a recessed receiving groove 16. The heat dissipation substrate B33 is fixedly installed on the inner side of the outer panel 13 of the assembly housing 1 and arranged at the receiving groove 16. The external heat dissipation fins 35 are arranged in the receiving groove 16.

[0046] This ensures the stable installation of heat dissipation substrates A32 and B33 in the assembly housing 1, and the external heat dissipation fins 35 are arranged in the receiving groove 16, which can ensure the overall aesthetics of the charging pile.

[0047] To ensure that the cooling fan 4 can be stably installed at the exhaust port 11 and to ensure the dustproof and rainproof effect of the cooling air duct 2, the following technical solution is provided.

[0048] A mounting base 24 is fixedly connected in the horizontal air duct 22 at the top, and the cooling fan 4 is fixedly installed on the mounting base 24; a dustproof net 17 is fixedly installed on the outside of the air inlet 12 and the air outlet 11, and a rain shelter 18 arranged around the dustproof net 17 is fixedly installed on the outer panel 13.

[0049] The mounting base 24 ensures that each cooling fan 4 can be stably installed in the corresponding horizontal air duct 22 and arranged at the air inlet 12. The dustproof net 17 can effectively prevent external dust from entering the cooling air duct 2 and affecting the heat dissipation effect, while the rain shelter 18 can prevent rainwater from entering the cooling air duct 2.

[0050] To ensure that the opening and closing component 5 can be stably installed at the air inlet 12 and the air outlet 11, and to enable adjustment of the opening size, the following technical solution is provided.

[0051] The opening and closing assembly 5 includes a baffle 51, a connecting rod 52, and an electric telescopic rod 53. The baffle 51 includes multiple sets evenly arranged, and each set of baffles 51 is rotatably installed in the rain shelter 18 and attached to the dustproof net 17. The connecting rod 52 is arranged along the arrangement direction of the baffles 51, and the connecting rod 52 of each set of baffles 51 is evenly connected and kept hinged. The fixed end of the electric telescopic rod 53 is hinged to the rain shelter 18, and the movable end of the electric telescopic rod 53 is kept hinged to one of the baffles 51.

[0052] The arrangement of the connecting rod 52 enables synchronous adjustment of the flipping angle of each set of baffles 51. When one set of baffles 51 is flipped by the electric telescopic rod 53, the other sets of baffles 51 can be flipped synchronously, thereby controlling the opening size of the air inlet 12 and the air outlet 11. Specifically, when each baffle 51 is in a position of being in contact with the dustproof net 17, the ends of each baffle 51 are connected, which can completely block the air inlet 12 and the air outlet 11. When the baffle 51 is in a position perpendicular to the dustproof net 17, the air inlet 12 and the air outlet 11 are in a fully open position.

[0053] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0054] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A high-efficiency thermal management device for a high-power DC charging pile, characterized in that: The assembly includes a housing (1) and a heat dissipation duct (2), a heat-conducting substrate (31), a heat dissipation substrate A (32), and a heat dissipation substrate B (33) installed in the housing (1). The housing (1) is nested and fixed in the charging pile, and the outer panel (13) is exposed to the outside of the charging pile. The outer panel (13) of the housing (1) has an exhaust port (11) arranged at the top and an air inlet (12) arranged at the bottom. The heat dissipation duct (2) is fixedly installed in the housing (1) and its two ends are connected to the exhaust port (11) and the air inlet (12). The plate (31) is fixedly installed on the inner panel (14) of the assembly housing (1). The heat dissipation substrate A (32) and heat dissipation substrate B (33) are respectively assembled on both sides of the heat dissipation duct (2). The heat dissipation substrate A (32) and heat dissipation substrate B (33) are provided with inner heat dissipation fins (34) extending into the heat dissipation duct (2). The heat dissipation substrate B (33) is also provided with outer heat dissipation fins (35) extending into the outer panel (13) of the assembly housing (1). The heat conduction substrate (31) is connected to the heat dissipation substrate A (32) and heat dissipation substrate B (33) through a vacuum heat pipe (36). It also includes a cooling fan (4) and an opening and closing assembly (5). The cooling fan (4) includes multiple sets arranged closely at the exhaust port (11). The air inlet (12) and the exhaust port (11) are both equipped with the opening and closing assembly (5). The opening and closing assembly (5) is used to adjust the opening size of the air inlet (12) and the exhaust port (11).

2. The high-efficiency thermal management device of a high-power DC charging pile according to claim 1, characterized in that: The assembly housing (1) is fixedly connected to a vertical plate (15) arranged in the vertical direction. The heat dissipation duct (2) includes a vertical duct (21) arranged in the vertical direction and a horizontal duct (22) connected to both ends of the vertical duct (21) and arranged horizontally. The vertical duct (21) and the horizontal duct (22) are connected by an arc-shaped duct (23). The internal heat dissipation fins (34) are all arranged in the vertical duct (21). The vertical duct (21) is fixedly installed on the vertical plate (15). The two sets of horizontal ducts (22) are respectively connected to the air inlet (12) and the air outlet (11).

3. The high-efficiency thermal management device for a high-power DC charging pile according to claim 2, characterized in that: The heat dissipation substrate A (32) is fixedly installed on the vertical plate (15). The outer panel (13) of the assembly housing (1) is provided with a recessed receiving groove (16). The heat dissipation substrate B (33) is fixedly installed on the inner side of the outer panel (13) of the assembly housing (1) and arranged at the position of the receiving groove (16). The outer heat dissipation fins (35) are arranged in the receiving groove (16).

4. The high-efficiency thermal management device for a high-power DC charging pile according to claim 2, characterized in that: A mounting pad (24) is fixedly connected in the transverse air duct (22) at the top, and the cooling fan (4) is fixedly installed on the mounting pad (24); a dustproof net (17) is fixedly installed on the outside of the air inlet (12) and the air outlet (11), and a rain shelter (18) arranged around the dustproof net (17) is fixedly installed on the outer panel (13).

5. The high-efficiency thermal management device for a high-power DC charging pile according to claim 4, characterized in that: The opening and closing assembly (5) includes a baffle (51), a connecting rod (52), and an electric telescopic rod (53). The baffle (51) includes multiple sets evenly arranged. Each set of baffles (51) is rotatably installed in the rain shelter (18) and attached to the dustproof net (17). The connecting rod (52) is arranged along the baffle (51) arrangement direction. Each set of baffles (51) is evenly connected to the connecting rod (52) and kept hinged. The fixed end of the electric telescopic rod (53) is hinged to the rain shelter (18), and the movable end of the electric telescopic rod (53) is kept hinged to one of the baffles (51).

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