Cooling fan and air duct device of 30kW direct-current charging pile power supply system

Abstract

The invention relates to the technical field of cooling fan and air duct devices, and discloses a 30 kW direct current charging pile power system cooling fan and air duct device which comprises an external supporting frame, a buffer supporting assembly is arranged on the bottom face of the external supporting frame, and a front rapid cooling assembly is arranged on the front portion of the external supporting frame. The interior of the external supporting frame is fixedly connected with a constant filtering charging module, the side face of the constant filtering charging module is provided with a side face clamping and fixing assembly and a rapid heat dissipation assembly, the side face of the inner side of the external supporting frame is provided with an external dustproof assembly, and the inner side of the external supporting frame is fixedly connected with an internal transformer; a rapid cooling assembly is arranged on the side face of the internal transformer, an internal ventilation assembly is arranged on the back of the inner side of the external supporting frame, and the back face of the external supporting frame is fixedly connected with a back face cover plate. Through efficient heat dissipation and stabilizing components, the dustproof effect is good, an air duct is optimized, and the reliability and stability of the charging efficiency are improved.

Description

Technical Field

[0001] The present invention relates to the technical field of cooling fan-level air duct devices, and specifically to a cooling fan and air duct device for a 30kW DC charging pile power supply system. Background Art

[0002] Amid the rapid development of the new energy vehicle industry, DC charging piles have become indispensable infrastructure. 30kW DC charging piles, with their moderate power, are widely used in various charging scenarios, meeting the charging needs of general electric vehicles. However, the power supply system of these charging piles faces severe heat dissipation challenges during operation. Core components in the power supply system, such as power devices and transformers, generate a large amount of heat during the conversion of electrical energy to electromagnetic energy. For example, power semiconductor devices generate heat due to resistance loss, and transformers also accumulate heat during electromagnetic conversion.

[0003] If this heat cannot be dissipated in time, it will cause serious problems to the power supply system. On the one hand, excessively high temperature will cause the performance of power devices to decline, increase the on-resistance, reduce the switching speed, directly reduce the charging efficiency of the charging pile, and prolong the user's charging time. On the other hand, high temperature will accelerate the aging of electronic components, reduce their reliability, and increase the probability of failure, which not only increases the maintenance cost, but may also cause safety problems such as charging interruption. Traditional natural heat dissipation and simple air cooling methods can no longer meet the heat dissipation requirements. Natural heat dissipation efficiency is low, the air duct design of simple air cooling lacks specificity, and the fan selection and layout are unreasonable, resulting in uneven heat dissipation. There is still a risk of overheating in key parts. Therefore, the development of efficient heat dissipation fans and air duct devices is urgent, which is crucial to improving the comprehensive performance of the 30kW DC charging pile power supply system. To this end, we propose a 30kW DC charging pile power supply system heat dissipation fan and air duct device. Summary of the Invention

[0004] In view of the deficiencies in the prior art, the present invention provides a 30kW DC charging pile power system cooling fan and air duct device to solve the above problems.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: A 30kW DC charging pile power supply system cooling fan and air duct device, comprising an external support frame, the front of the external support frame is fixedly connected to a front control panel, the front of the external support frame is fixedly connected to a front display panel, the bottom surface of the external support frame is provided with a buffer support assembly, the front of the external support frame is provided with a front rapid cooling assembly, the interior of the external support frame is fixedly connected to equidistantly distributed constant filtering and charging modules, the sides of the constant filtering and charging modules are provided with side clamping and fixing assemblies, the top surface of the constant filtering and charging modules is provided with a rapid heat dissipation assembly, the inner side surface of the external support frame is provided with an external dustproof assembly, the inner side of the external support frame is fixedly connected to an internal transformer, the side of the internal transformer is provided with a rapid cooling assembly, the inner back of the external support frame is provided with an internal ventilation assembly, and the back of the external support frame is fixedly connected to a back cover plate.

[0006] Preferably, the front bottom of the external support frame is provided with front ventilation holes, the side of the external support frame is provided with evenly distributed side ventilation holes, the top surface of the external support frame is fixedly connected with evenly distributed top mounting connecting holes, the side of the external support frame is fixedly connected with a charging head support fixing platform, the other side of the external support frame is provided with evenly distributed exhaust holes, the interior of the external support frame is fixedly connected with evenly distributed side fixing support platforms, the inner bottom surface of the external support frame is provided with evenly distributed, the interior of the external support frame is fixedly connected with an internal transformer support platform, and the bottom surface of the internal transformer support platform is fixedly connected with an internal transformer.

[0007] Preferably, the buffer support assembly includes a bottom buffer support plate and a bottom support platform. The bottom surface of the external support frame is fixedly connected to the bottom buffer support plate, and the bottom surface of the bottom buffer support plate is fixedly connected to the bottom support platform.

[0008] Preferably, the front rapid cooling component includes a front dustproof mesh plate and a front cooling fan. The front dustproof mesh plate is fixedly connected to the inner front side of the front ventilation hole. The side of the front dustproof mesh plate is provided with equidistantly distributed dustproof connecting holes, and the inner side of the front ventilation hole is fixedly connected to the equidistantly distributed front cooling fan.

[0009] Preferably, the side clamping and fixing assembly includes a clamping spring and a side support slide. The inner side of the side fixed support platform is fixedly connected with equidistantly distributed clamping springs, the other end of the clamping spring is fixedly connected with the side support slide, and the inner side of the side support slide is slidably connected with a constant filtering and charging module.

[0010] Preferably, the rapid heat dissipation component includes a side cooling fan, a first cooling fin, a second cooling fin, a third cooling fin, and a heat conducting plate. The inner side of the side ventilation hole is fixedly connected with an equidistantly distributed side cooling fan. The top and bottom surfaces of the constant filtering charging module are fixedly connected with equidistantly distributed heat conducting plates. The top surface of the heat conducting plate is fixedly connected with equidistantly distributed first cooling fins. The top surface of the heat conducting plate is fixedly connected with equidistantly distributed second cooling fins. The top surface of the heat conducting plate is fixedly connected with equidistantly distributed third cooling fins. The first cooling fins, the second cooling fins and the third cooling fins are proportionally increased.

[0011] Preferably, the external dustproof component includes a side dustproof net and a side filter plate. The inner side of the side ventilation hole is fixedly connected to the side dustproof net. The side of the side dustproof net is provided with equidistantly distributed dustproof connecting holes. The side of the internal exhaust hole of the external support frame is fixedly connected to the side filter plate.

[0012] Preferably, the rapid cooling component includes a coolant storage tank, a pressurized water pump, a connecting pipe, and a cooling circulation pipe. The inner side of the external support frame is fixedly connected to the coolant storage tank, the back side of the coolant storage tank is fixedly connected to the pressurized water pump, the inner bottom surface of the external support frame is fixedly connected to the pressurized water pump, the back side of the pressurized water pump is fixedly connected to the connecting pipe, the top surface of the side dustproof net is fixedly connected to the cooling circulation pipe, the bottom surface of the other end of the cooling circulation pipe is fixedly connected to the coolant storage tank, and the outer side surface of the cooling circulation pipe is fixedly connected to the internal transformer.

[0013] Preferably, the internal ventilation component includes a top cooling fan, a back ventilation connecting pipe, and a back partition plate. The front side of the back ventilation connecting pipe is fixedly connected with equidistant connecting bosses, and the side of the back partition plate is provided with equidistant back partition connecting holes. The inner side of the top mounting connecting hole is fixedly connected with the top cooling fan, and the inner side is fixedly connected with the back ventilation connecting pipe. The inner side of the external support frame is fixedly connected with the back partition plate, and the connecting boss is concentrically aligned with the back partition connecting hole.

[0014] Preferably, the outer side surface of the external support frame is fixedly connected to a charging connection cable, the other end of the charging connection cable is fixedly connected to a charging head, one end of the charging head is fixedly connected to a handheld handle, the other end of the charging head is fixedly connected to a charging plug, and the top surface of the charging head support fixing platform is fixedly connected to the charging head.

[0015] Compared with the prior art, the advantages of the present invention are: A 30kW DC charging pile power system cooling fan and air duct device is provided, which has the following beneficial effects: 1. Efficient heat dissipation to improve charging efficiency: The cooling fan and air duct device of the 30kW DC charging pile power system are equipped with multiple heat dissipation components working together. The front cooling fan in the front rapid cooling component can quickly inhale cold air through the front ventilation holes to initially cool the inside of the charging pile and cool the coolant storage tank by air. The side cooling fans in the rapid heat dissipation component cooperate with the first, second and third heat dissipation fins and the heat conduction plate to accelerate the heat dissipation of the constant filtering charging module from the side. At the same time, the rapid cooling component uses the coolant storage tank, pressurized water pump, connecting pipe and cooling circulation pipe to efficiently cool the internal transformer. These components work together to effectively reduce the temperature of the core components of the power system, avoid performance degradation of power devices due to overheating, improve the charging efficiency of the charging pile, and reduce the charging time of users.

[0016] 2. Stabilize components and enhance structural stability: The clamping springs and side support slides of the side clamping fixing components can firmly fix the constant filtering charging module on the side fixed support platform. During the operation of the charging pile, even if it is affected by vibration or external force, it can ensure the stability of the position of each module, prevent problems such as poor line contact due to component displacement, ensure the normal operation of the charging pile, and extend the service life of the equipment.

[0017] 3. Dust-proof design to ensure equipment reliability: The side dust-proof nets and side filter plates of the external dust-proof components can effectively prevent dust and impurities from entering the charging pile. The dust-proof connecting holes on the side dust-proof nets can initially filter out larger particles of impurities, and the side filter plates further filter out fine dust, reducing the erosion of dust on electronic components, reducing the risk of short circuits and failures caused by dust accumulation, and enhancing the reliability of the charging pile operation.

[0018] 4. Optimize the air duct and improve heat dissipation uniformity: The top cooling fan, back ventilation connecting pipe and back partition plate of the internal ventilation component optimize the air duct through reasonable structural design. The top cooling fan discharges hot air from the bottom. The back ventilation connecting pipe and the connecting boss on the back partition plate cooperate with the back partition connecting holes to guide the air to flow evenly inside, making the heat dissipation more uniform, avoiding local overheating, and ensuring that all components of the power supply system can operate at an appropriate temperature. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the overall structure of the present invention; Figure 3 It is a schematic cross-sectional view of the overall structure of the present invention; Figure 4 It is a cross-sectional schematic diagram of a partial structural side clamping and fixing assembly in the present invention; Figure 5 A schematic cross-sectional view of a partial structure of a rapid heat dissipation assembly in the present invention; Figure 6 It is a cross-sectional schematic diagram of a partial structural external support frame in the present invention.

[0020] Figure: 1. External support frame; 2. Bottom buffer support plate; 3. Bottom support platform; 4. Front control panel; 5. Front display panel; 6. Front dust screen; 7. Dust-proof connection hole; 8. Charging cable; 9. Charging head support and fixing platform; 10. Charging head; 11. Hand grip; 12. Side dust screen; 13. Back cover; 14. Top cooling fan; 15. Side ventilation holes; 16. Top mounting connection hole; 17. Front ventilation holes; 18. Front cooling fan; 19. Coolant storage tank; 20. Pressurized water pump; 21. Connecting pipe 22. Cooling circulation pipe; 23. Charging plug; 24. Side cooling fan; 25. First cooling fin; 26. Second cooling fin; 27. Third cooling fin; 28. Clamping spring; 29. Connecting boss; 30. Back ventilation connecting pipe; 31. Back partition connecting hole; 32. Back partition plate; 33. Heat conduction plate; 34. Internal transformer; 35. Side support slide; 36. Side filter plate; 37. Constant filtering charging module; 38; Internal transformer support platform; 39. Side fixed support platform; 40. Exhaust hole; 41. Bottom exhaust connecting hole. DETAILED DESCRIPTION

[0021] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0022] See also Figure 1-6 , the present invention provides a technical solution; A 30kW DC charging pile power supply system cooling fan and air duct device includes an external support frame 1, the front of the external support frame 1 is fixedly connected to a front control panel 4, the front of the external support frame 1 is fixedly connected to a front display panel 5, the bottom surface of the external support frame 1 is provided with a buffer support component, the front of the external support frame 1 is provided with a front rapid cooling component, the interior of the external support frame 1 is fixedly connected to equidistantly distributed constant filtering and charging modules 37, the sides of the constant filtering and charging modules 37 are provided with side clamping and fixing components, the top surface of the constant filtering and charging modules 37 is provided with a rapid heat dissipation component, the inner side surface of the external support frame 1 is provided with an external dustproof component, the inner side of the external support frame 1 is fixedly connected to an internal transformer 34, the side of the internal transformer 34 is provided with a rapid cooling component, the inner back of the external support frame 1 is provided with an internal ventilation component, and the back of the external support frame 1 is fixedly connected to a back cover plate 13.

[0023] Furthermore, a front ventilation hole 17 is provided at the bottom of the front side of the external support frame 1, and evenly spaced side ventilation holes 15 are provided on the side of the external support frame 1. The top surface of the external support frame 1 is fixedly connected with evenly spaced top mounting connecting holes 16, and the side of the external support frame 1 is fixedly connected with a charging head support fixing platform 9. The other side of the external support frame 1 is provided with evenly spaced exhaust holes 40. The interior of the external support frame 1 is fixedly connected with evenly spaced side fixing support platforms 39. The inner bottom surface of the external support frame 1 is provided with evenly spaced 41. The interior of the external support frame 1 is fixedly connected with an internal transformer support platform 38, and the bottom surface of the internal transformer support platform 38 is fixedly connected with an internal transformer 34.

[0024] Furthermore, the buffer support assembly includes a bottom buffer support plate 2 and a bottom support platform 3. The bottom surface of the external support frame 1 is fixedly connected to the bottom buffer support plate 2, and the bottom surface of the bottom buffer support plate 2 is fixedly connected to the bottom support platform 3. Through the action of the buffer support assembly, support is provided to the bottom of the external support frame 1, and at the same time, exhaust space is provided for the bottom exhaust connecting hole 41.

[0025] Furthermore, the front rapid cooling component includes a front dustproof mesh plate 6 and a front cooling fan 18. The front dustproof mesh plate 6 is fixedly connected to the front inner side of the front ventilation hole 17. The side of the front dustproof mesh plate 6 is provided with equidistantly distributed dustproof connecting holes 7. The inner side of the front ventilation hole 17 is fixedly connected to the equidistantly distributed front cooling fan 18. Through the action of the front rapid cooling component, cold air is quickly inhaled, the interior of the charging pile is initially cooled, and the coolant storage tank is cooled by air.

[0026] Furthermore, the side clamping and fixing assembly includes a clamping spring 28 and a side support slide 35. The inner side of the side fixed support platform 39 is fixedly connected with equidistantly distributed clamping springs 28, and the other end of the clamping spring 28 is fixedly connected with the side support slide 35. The inner side of the side support slide 35 is slidably connected with a constant filtering charging module 37. Through the action of the side clamping and fixing assembly, the constant filtering charging module 37 is firmly fixed on the side fixed support platform 39. During the operation of the charging pile, even if it is affected by vibration or external force, the position of each module can be ensured to be stable, and problems such as poor line contact due to component displacement can be prevented, thereby ensuring the normal operation of the charging pile and extending the service life of the equipment.

[0027] Furthermore, the rapid heat dissipation component includes a side cooling fan 24, a first cooling fin 25, a second cooling fin 26, a third cooling fin 27, and a heat conducting plate 33. The inner side of the side ventilation hole 15 is fixedly connected with an equidistantly distributed side cooling fan 24. The top and bottom surfaces of the constant filtering and charging module 37 are fixedly connected with equidistantly distributed heat conducting plates 33. The top surface of the heat conducting plate 33 is fixedly connected with the equidistantly distributed first cooling fins 25. The top surface of the heat conducting plate 33 is fixedly connected with the equidistantly distributed second cooling fins 26. The top surface of the heat conducting plate 33 is fixedly connected with the equidistantly distributed third cooling fins 27. The first cooling fins 25, the second cooling fins 26 and the third cooling fins 27 are proportionally increased. Through the action of the rapid heat dissipation component, the heat dissipation of the constant filtering and charging module is accelerated from the side.

[0028] Furthermore, the external dustproof component includes a side dustproof net 12 and a side filter plate 36. The inner side of the side ventilation hole 15 is fixedly connected to the side dustproof net 12. The side of the side dustproof net 12 is provided with equidistantly distributed dustproof connecting holes 7. The interior of the external support frame 1 is provided with an exhaust hole 40 on one side which is fixedly connected to the side filter plate 36. Through the action of the external dustproof component, it is possible to effectively prevent dust, impurities, etc. from entering the interior of the charging pile. The dustproof connecting holes 7 on the side dustproof net 12 can preliminarily filter larger particles of impurities. The side filter plate 36 further filters fine dust, reduces the erosion of dust on electronic components, reduces the risk of short circuit and failure caused by dust accumulation, and enhances the reliability of the charging pile operation.

[0029] Furthermore, the rapid cooling component includes a coolant storage tank 19, a pressurized water pump 20, a connecting pipe 21, and a cooling circulation pipe 22. The inner side of the external support frame 1 is fixedly connected to the coolant storage tank 19, the back side of the coolant storage tank 19 is fixedly connected to the pressurized water pump 20, the inner bottom surface of the external support frame 1 is fixedly connected to the pressurized water pump 20, the back side of the pressurized water pump 20 is fixedly connected to the connecting pipe 21, the top surface of the side dustproof net 12 is fixedly connected to the cooling circulation pipe 22, the bottom surface of the other end of the cooling circulation pipe 22 is fixedly connected to the coolant storage tank 19, and the outer side surface of the cooling circulation pipe 22 is fixedly connected to the internal transformer 34. Through the action of the rapid cooling component, efficient cooling of the internal transformer 34 is achieved.

[0030] Furthermore, the internal ventilation component includes a top cooling fan 14, a back ventilation connecting pipe 30, and a back partition plate 32. The front side of the back ventilation connecting pipe 30 is fixedly connected with equidistantly distributed connecting bosses 29, and the side of the back partition plate 32 is provided with equidistantly distributed back partition connecting holes 31. The inner side of the top mounting connecting hole 16 is fixedly connected with the top cooling fan 14, and the inner side of 41 is fixedly connected with the back ventilation connecting pipe 30. The inner side of the external support frame 1 is fixedly connected with the back partition plate 32. The connecting boss 29 and the back partition connecting hole 31 are concentrically aligned. Through the action of the internal ventilation component, the air duct is optimized. The top cooling fan 14 discharges hot air from the bottom. The connecting boss 29 on the back ventilation connecting pipe 30 and the back partition plate 32 cooperate with the back partition connecting hole 31 to guide the air to flow evenly inside, making the heat dissipation more uniform, avoiding local overheating, and ensuring that all components of the power supply system can operate at an appropriate temperature.

[0031] Furthermore, the outer side of the external support frame 1 is fixedly connected to a charging connection cable 8, the other end of the charging connection cable 8 is fixedly connected to a charging head 10, one end of the charging head 10 is fixedly connected to a handheld handle 11, the other end of the charging head 10 is fixedly connected to a charging plug 23, and the top surface of the charging head support fixing platform 9 is fixedly connected to the charging head 10.

[0032] Structure Description: External support frame 1: The external support frame 1 serves as the basic frame of the entire device and is mostly made of aluminum alloy or stainless steel. Aluminum alloy is light in weight, high in strength and corrosion-resistant; stainless steel has stronger corrosion resistance and higher strength, and can effectively protect internal components. The front ventilation holes 17 at the bottom of the front side, the side ventilation holes 15 on the sides and the top mounting connecting holes 16 on the top surface are processed by mechanical drilling or mold forming technology, with precise positions and sizes, and are respectively adapted to the front cooling fan 18, the side cooling fan 24 and the top cooling fan 14 to ensure smooth ventilation. The side charging head support fixing platform 9 is fixed to the external support frame 1 by welding or bolting, providing stable support for the charging head 10. The internal side fixed support platform 39 and the internal transformer support platform 38 are connected to the external support frame 1 by welding or one-piece molding technology, providing precise installation positions for the constant filtering charging module 37 and the internal transformer 34, ensuring that each component is firmly installed and maintaining the stability of the overall structure. Bottom buffer support plate 2: The bottom buffer support plate 2 is generally made of rubber or silicone. Rubber has good elasticity and buffering properties and can effectively absorb vibration energy; silicone has better high and low temperature resistance and can adapt to different working environments. The bottom buffer support plate 2 is fixed to the bottom surface of the external support frame 1 by gluing or bolting. Its thickness and hardness are carefully designed to buffer vibration without affecting the overall stability. Bottom support platform 3: The bottom support platform 3 is usually made of metal materials such as carbon steel, which has high strength and rigidity. It is connected to the bottom surface of the bottom buffer support plate 2 by welding or bolts. Its shape and structure are designed according to actual needs. It is generally a flat plate or a structure with reinforcing ribs to increase the support area and strength, provide reliable support for the entire device, and leave a reasonable exhaust space for the bottom exhaust connection hole 41; Front dust screen 6: The front dust screen 6 is mostly made of metal mesh or plastic mesh. Metal mesh, such as stainless steel mesh, has high strength and corrosion resistance; plastic mesh is lightweight and low-cost. Dust-proof communication holes 7 are evenly distributed on the screen and are made by stamping or injection molding. The pore size is moderate, which can effectively filter dust and impurities without affecting air circulation efficiency. The front dust screen 6 is fixed to the front side of the front ventilation hole 17 by a slot or bolt, and is firmly installed and easy to disassemble and clean. Front cooling fan 18: The front cooling fan 18 is usually a brushless DC fan with the characteristics of high speed, large air volume, low noise and long life. Its motor part consists of a stator, a rotor and a bearing. The coil wound on the stator generates a magnetic field when energized, driving the rotor to rotate, which in turn drives the fan blades to rotate. The fan blades adopt a special aerodynamic design, which can efficiently draw in cold air and blow it into the charging pile to achieve initial cooling and air cooling of the coolant storage tank 19. The front cooling fan 18 is fixed to the inside of the front ventilation hole 17 by bolts or buckles. It is stably installed to ensure that it will not shake during operation. Clamping spring 28: The clamping spring 28 is generally a helical compression spring made of spring steel with good elasticity and fatigue strength. Its parameters such as spring wire diameter, number of spring coils and spring height are precisely calculated and designed to provide appropriate elastic force. One end of the clamping spring 28 is fixed to the inner side of the side fixed support platform 39 by welding or hooking, and the other end is connected to the side support slide 35. During operation, the clamping spring 28 always maintains the thrust on the side support slide 35 to ensure that the constant filter charging module 37 is firmly fixed; The side support slide 35 is usually made of metal, such as aluminum alloy or carbon steel. The side support slide 35 made of aluminum alloy is light and corrosion-resistant; the carbon steel material is stronger. The surface in contact with the constant filter charging module 37 is polished and smooth to reduce friction resistance and facilitate sliding connection. The side support slide 35 is provided with a connection structure that is compatible with the clamping spring 28, such as a hook or a mounting hole, to ensure a stable connection with the clamping spring 28. Under the action of the clamping spring 28, the constant filter charging module 37 can be tightly clamped to prevent it from displacement. Side cooling fan 24: The side cooling fan 24 is also mostly a brushless DC fan. Similar to the front cooling fan 18, it has the characteristics of high speed and large air volume. Its motor structure and working principle are the same as those of the front cooling fan 18. By generating a strong airflow, it accelerates the flow of air around the constant filtering charging module 37 to remove heat. The side cooling fan 24 is fixed to the inside of the side ventilation hole 15 by bolts or buckles. The installation position is precise to ensure that the airflow can effectively act on the cooling fins and heat conducting plate 33; First heat sink fin 25, second heat sink fin 26, and third heat sink fin 27: These three types of heat sink fins are made of metal with high thermal conductivity, such as copper or aluminum. Copper has excellent thermal conductivity and can quickly conduct heat; aluminum has the advantages of light weight and low cost. The heat sink fins are fixed to the top surface of the heat conducting plate 33 through die casting or welding. The proportionally enlarged design increases the heat dissipation area and improves the heat dissipation efficiency. The heat sink fins are usually thin and smooth in shape. Appropriate spacing is maintained between adjacent fins to facilitate air circulation, dissipating the heat conducted by the heat conducting plate 33 to the surrounding air. Heat conducting plate 33: The heat conducting plate 33 is generally made of copper or aluminum through die-casting or rolling. Its thickness and size are designed according to the heat generation of the constant filtering and charging module 37 and the installation space. The surface is flat and smooth, and it fits tightly with the top and bottom surfaces of the constant filtering and charging module 37. It can quickly conduct the heat generated by the module to the heat dissipation fins to achieve efficient heat dissipation. Side dust screen 12: The material of the side dust screen 12 is similar to that of the front dust screen plate 6, and can be a metal mesh or a plastic mesh. The dust-proof communication holes 7 thereof are similar in size and distribution to those of the front dust screen plate 6. The side dust screen 12 is processed by stamping or injection molding. It is installed inside the side ventilation hole 15 and is fixed by a slot or bolt. It can initially filter larger particles of impurities and prevent dust from entering the interior of the charging pile. Side filter plate 36: The side filter plate 36 is typically made of a multi-layer composite filter material, such as a glass fiber filter and an activated carbon filter. The glass fiber filter can filter fine dust particles, while the activated carbon filter can absorb harmful gases and odors. The side filter plate 36 is fixed to the side of the outer support frame 1 with the exhaust hole 40 by means of a slot or bolt. The side filter plate 36 is tightly installed to further filter dust entering through the side vents 15 and protect the internal electronic components. Coolant storage tank 19: The coolant storage tank 19 is generally made of corrosion-resistant plastic or metal, such as engineering plastic or stainless steel. Engineering plastic is lightweight, low-cost, and corrosion-resistant; stainless steel has higher strength and corrosion resistance. Its internal space is reasonably designed to store sufficient coolant. A filling port and a liquid level observation window are provided on the tank body to facilitate adding coolant and observing the liquid level. The coolant storage tank 19 is fixed to the inner side of the external support frame 1 by welding or bolts, and is firmly installed. Pressurized water pump 20: The pressurized water pump 20 is generally a micro centrifugal pump, consisting of a motor, an impeller, and a pump body. The motor drives the impeller to rotate at high speed, causing the coolant to generate pressure in the pump body, thereby achieving circulation of the coolant. The pressurized water pump 20 is fixed to the back of the coolant storage tank 19 and the inner bottom surface of the external support frame 1 by bolts. The connection is firm to ensure stable operation during operation. The coolant is pumped into the cooling circulation pipe 22 through the connecting pipe 21; Connecting pipe 21: The connecting pipe 21 is generally made of a rubber tube or a metal hose. The rubber tube has good flexibility and corrosion resistance and is easy to install; the metal hose has higher strength and is not easy to deform. The inner diameter and length of the connecting pipe 21 are selected according to actual needs. The two ends are tightly connected to the pressurized water pump 20 and the cooling flow pipe 22 respectively, and fixed by means of buckles or welding to ensure that the coolant does not leak during the delivery process; Cooling circulation pipe 22: The cooling circulation pipe 22 is usually made of copper or aluminum tubes with good thermal conductivity. Its shape is designed according to the shape of the internal transformer 34. It surrounds the outer side of the transformer and is fixed to the external support frame 1 and the side dust screen 12 by welding or clamps. It is firmly installed. The interior of the cooling circulation pipe 22 is smooth, which reduces the flow resistance of the coolant, allowing the coolant to efficiently remove the heat generated by the internal transformer 34. Top cooling fan 14: Similar to the front cooling fan 18 and the side cooling fan 24, the top cooling fan 14 is a brushless DC fan with high speed and large air volume. Its motor and blade structure are similar to those of other cooling fans. It is fixed to the inside of the top mounting hole 16 by bolts or clips, exhausting hot air from the bottom to promote air circulation. Back ventilation connecting pipe 30: The back ventilation connecting pipe 30 is generally made of plastic or metal, such as PVC pipe or aluminum alloy pipe. PVC pipe is low-cost and corrosion-resistant; aluminum alloy pipe is high-strength and has good heat dissipation performance. The connecting boss 29 is fixed to the front side of the back ventilation connecting pipe 30 by injection molding or welding. The position and size of the connecting boss 29 are precisely aligned with the back partition connecting hole 31 on the back partition plate 32, guiding the air to flow evenly inside the charging pile. Back partition plate 32: The back partition plate 32 is usually made of metal or plastic, such as carbon steel or engineering plastic. The back partition communication holes 31 on its surface are made by stamping or injection molding, and cooperate with the communication boss 29 to optimize the air duct structure. The back partition plate 32 is fixed to the inner side of the external support frame 1 by bolts or welding. The installation is stable and ensures that the air flows according to the designed path to achieve uniform heat dissipation. Working principle: When the charging pile starts working, the front cooling fan 18 of the front rapid cooling component starts, and quickly draws in cold air through the front ventilation holes 17. The cold air enters the interior of the charging pile, on the one hand, preliminarily cooling the internal space, and on the other hand, cooling the coolant storage tank 19. At the same time, the top cooling fan 14 discharges the hot air at the bottom, and the hot air is discharged through the bottom exhaust connecting hole 41, forming a preliminary air circulation path. At the same time, during the air flow process, the rapid cooling component plays a role, and the side cooling fan 24 starts to run, blowing air to the constant filtering charging module 37. The heat conducting plates 33 on the top and bottom of the module will conduct the heat generated by the module. The first, second and third heat dissipating fins 25, 26, and 27 dissipate the heat to the surrounding air, and accelerate the heat discharge with the help of the side ventilation holes 15 to achieve efficient heat dissipation of the constant filtering charging module 37. At the same time, the rapid cooling component works synchronously, and the pressurized water delivery pump 20 starts to pump the coolant in the coolant storage tank 19 into the cooling circulation pipe 22 through the connecting pipe 21. The coolant circulates in the cooling circulation pipe 22, takes away the heat generated by the internal transformer 34, and then flows back to the coolant storage tank 19 to achieve continuous cooling of the internal transformer 34. The internal ventilation component further optimizes the air duct. The connecting boss 29 on the front side of the back ventilation connecting pipe 30 cooperates with the back partition connecting hole 31 on the back partition plate 32 to guide the air to flow evenly inside the charging pile. The top cooling fan 14 continuously discharges hot air from the bottom, allowing cold air to continuously enter from the front ventilation holes 17 and the side ventilation holes 15, forming a good air circulation to ensure uniform heat dissipation of each component. The clamping spring 28 and the side support slide plate 35 of the side clamping fixing assembly firmly fix the constant filtering charging module 37 on the side fixed support platform 39 to avoid component displacement and poor line contact caused by operating vibration. The side dustproof net 12 and the side filter plate 36 of the external dustproof component prevent dust and impurities from entering. The side dustproof net 12 filters larger particles, and the side filter plate 36 filters fine dust to ensure the normal operation of electronic components.

[0033] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A 30kW DC charging pile power system cooling fan and air duct device, comprising an external support frame (1), characterized in that: The front of the external support frame (1) is fixedly connected to a front control panel (4), the front of the external support frame (1) is fixedly connected to a front display panel (5), the bottom surface of the external support frame (1) is provided with a buffer support component, the front of the external support frame (1) is provided with a front rapid cooling component, the interior of the external support frame (1) is fixedly connected to equidistantly distributed constant filtering and charging modules (37), the sides of the constant filtering and charging modules (37) are provided with side clamping and fixing components, the top surface of the constant filtering and charging modules (37) is provided with a rapid heat dissipation component, the inner side of the external support frame (1) is provided with an external dustproof component, the inner side of the external support frame (1) is fixedly connected to an internal transformer (34), the side of the internal transformer (34) is provided with a rapid cooling component, the inner back of the external support frame (1) is provided with an internal ventilation component, and the back of the external support frame (1) is fixedly connected to a back cover plate (13).

2. A 30kW DC charging pile power system cooling fan and air duct device according to claim 1, characterized in that: The front bottom of the external support frame (1) is provided with a front ventilation hole (17), the side of the external support frame (1) is provided with equidistantly distributed side ventilation holes (15), the top surface of the external support frame (1) is fixedly connected with equidistantly distributed top mounting connecting holes (16), the side of the external support frame (1) is fixedly connected with a charging head support fixing platform (9), the other side of the external support frame (1) is provided with equidistantly distributed exhaust holes (40), the interior of the external support frame (1) is fixedly connected with equidistantly distributed side fixing support platforms (39), the inner bottom surface of the external support frame (1) is provided with equidistantly distributed (41), the interior of the external support frame (1) is fixedly connected with an internal transformer support platform (38), and the bottom surface of the internal transformer support platform (38) is fixedly connected with an internal transformer (34).

3. A 30kW DC charging pile power system cooling fan and air duct device according to claim 1, characterized in that: The buffer support assembly comprises a bottom buffer support plate (2) and a bottom support platform (3); the bottom surface of the external support frame (1) is fixedly connected to the bottom buffer support plate (2); and the bottom surface of the bottom buffer support plate (2) is fixedly connected to the bottom support platform (3).

4. A 30kW DC charging pile power system cooling fan and air duct device according to claim 2, characterized in that: The front rapid cooling component comprises a front dustproof screen (6) and a front cooling fan (18); the front dustproof screen (6) is fixedly connected to the front inner side of the front ventilation hole (17); the side of the front dustproof screen (6) is provided with dustproof connecting holes (7) distributed at equal intervals; the inner side of the front ventilation hole (17) is fixedly connected to the front cooling fan (18) distributed at equal intervals.

5. A 30kW DC charging pile power system cooling fan and air duct device according to claim 2, characterized in that: The side clamping and fixing assembly comprises a clamping spring (28) and a side supporting slide plate (35); the inner side of the side fixed support platform (39) is fixedly connected to the clamping spring (28) distributed at equal intervals; the other end of the clamping spring (28) is fixedly connected to the side supporting slide plate (35); and the inner side of the side supporting slide plate (35) is slidably connected to the constant filtering and charging module (37).

6. A 30kW DC charging pile power system cooling fan and air duct device according to claim 2, characterized in that: The rapid heat dissipation component comprises a side heat dissipation fan (24), a first heat dissipation fin (25), a second heat dissipation fin (26), a third heat dissipation fin (27), and a heat conduction plate (33). The inner side of the side ventilation hole (15) is fixedly connected to the side heat dissipation fan (24) distributed at equal intervals. The top surface and the bottom surface of the constant filtering charging module (37) are fixedly connected to the heat conduction plate (33) distributed at equal intervals. The top surface of the heat conduction plate (33) is fixedly connected to the first heat dissipation fin (25) distributed at equal intervals. The top surface of the heat conduction plate (33) is fixedly connected to the second heat dissipation fin (26) distributed at equal intervals. The top surface of the heat conduction plate (33) is fixedly connected to the third heat dissipation fin (27) distributed at equal intervals. The first heat dissipation fin (25), the second heat dissipation fin (26), and the third heat dissipation fin (27) are fixedly connected in equal proportion.

7. A 30kW DC charging pile power system cooling fan and air duct device according to claim 2, characterized in that: The external dustproof component includes a side dustproof net (12) and a side filter plate (36); the inner side of the side ventilation hole (15) is fixedly connected to the side dustproof net (12); the side of the side dustproof net (12) is provided with equidistantly distributed dustproof connecting holes (7); and the side of the internal exhaust hole (40) of the external support frame (1) is fixedly connected to the side filter plate (36).

8. The cooling fan and air duct device for a 30kW DC charging pile power supply system according to claim 2, characterized in that: The rapid cooling component includes a coolant storage tank (19), a pressurized water pump (20), a connecting pipe (21), and a cooling circulation pipe (22); the inner side of the external support frame (1) is fixedly connected to the coolant storage tank (19); the back side of the coolant storage tank (19) is fixedly connected to the pressurized water pump (20); the inner bottom surface of the external support frame (1) is fixedly connected to the pressurized water pump (20); the back side of the pressurized water pump (20) is fixedly connected to the connecting pipe (21); the top surface of the side dustproof net (12) is fixedly connected to the cooling circulation pipe (22); the bottom surface of the other end of the cooling circulation pipe (22) is fixedly connected to the coolant storage tank (19); and the outer side surface of the cooling circulation pipe (22) is fixedly connected to the internal transformer (34).

9. A 30kW DC charging pile power system cooling fan and air duct device according to claim 2, characterized in that: The internal ventilation assembly includes a top surface cooling fan (14), a back ventilation connecting pipe (30), and a back partition plate (32); the front side of the back ventilation connecting pipe (30) is fixedly connected with equidistantly distributed connecting bosses (29); the side of the back partition plate (32) is provided with equidistantly distributed back partition connecting holes (31); the inner side of the top mounting connecting hole (16) is fixedly connected with the top surface cooling fan (14); the inner side of the (41) is fixedly connected with the back ventilation connecting pipe (30); the inner side of the external support frame (1) is fixedly connected with the back partition plate (32); the connecting boss (29) and the back partition connecting hole (31) are concentrically aligned.

10. A 30kW DC charging pile power system cooling fan and air duct device according to claim 1, characterized in that: The outer side surface of the external support frame (1) is fixedly connected to a charging connection line (8), the other end of the charging connection line (8) is fixedly connected to a charging head (10), one end of the charging head (10) is fixedly connected to a handheld handle (11), the other end of the charging head (10) is fixedly connected to a charging plug (23), and the top surface of the charging head support fixing platform (9) is fixedly connected to the charging head (10).

Images