A direct-current charging pile with flexibly switchable heat dissipation air duct

Abstract

The utility model discloses a kind of direct current charging pile of flexible switching heat dissipation air duct, belong to new energy charging pile equipment technical field, the charging pile includes bottom shell, the charging module being set in bottom shell, cover and charging pile cover;Bottom shell is equipped with baffle, cover and charging module and baffle cooperation, form independent space I;Charging pile cover covers above independent space I and is fixed with bottom shell, and it is formed with bottom shell cooperation independent space II, independent space I is equipped with air inlet ventilation structure corresponding charging pile rear portion, independent space II is equipped with air outlet ventilation structure corresponding charging pile rear portion, air outlet ventilation structure includes second dustproof cotton, fan and fan cover that are sequentially set in the air outlet place of independent space II rear portion, fan cover is fixed in the air outlet place by cover sealing ring.The utility model can realize heat dissipation air duct switching by simple dismounting, with the advantages of improving heat dissipation efficiency, adapting different charging module heat dissipation demand and prolonging equipment service life.

Description

Technical Field

[0001] This utility model belongs to the technical field of new energy charging pile equipment, specifically relating to a DC charging pile with a flexible heat dissipation air duct. Background Technology

[0002] With the rapid development of the new energy electric bicycle and electric motorcycle industry, DC charging equipment, as a core charging infrastructure, directly affects charging efficiency and user experience due to its operational stability. The charging module, as the core component of the charging equipment, generates a large amount of heat during operation. If this heat cannot be dissipated in time, it can easily lead to overheating, causing power loss or even equipment failure. This problem is particularly frequent in high-temperature environments. Therefore, efficient heat dissipation is crucial for ensuring the reliable operation of charging equipment.

[0003] Traditional DC charging piles mostly employ a fixed cooling duct design, making it difficult to flexibly adapt to charging modules with different cooling methods. When the module has its own cooling fan, hot and cold airflows easily mix, leading to reduced cooling efficiency; if the module does not have its own fan, there are problems such as insufficient cooling power and heat accumulation. This structural mismatch with module characteristics makes it difficult for the charging pile to maintain a stable operating temperature under complex conditions, affecting charging efficiency and equipment lifespan. Therefore, there is an urgent need for an innovative structure with dynamically switchable cooling ducts.

[0004] US Patent Application No. US17837126 discloses a wireless charging device, comprising: a housing with a first air vent and a second air vent; a coil module and a motherboard module located inside the housing; and a heat dissipation assembly for dissipating heat from the coil module and motherboard module. The heat dissipation assembly includes a heat sink and a fan. The heat sink has a first side and a second side arranged opposite to each other. The coil module is located on the first side, and the fan is located on the second side. The fan has a third air vent and a fourth air vent. The first air vent, the second air vent, the third air vent, and the fourth air vent are connected to form a heat dissipation channel on the second side. When the fan is working, external airflow can flow through the heat dissipation channel formed by the first air vent, the second air vent, the third air vent, and the fourth air vent, allowing the heat from the heat dissipation assembly to be transferred to the outside of the housing, thereby reducing the temperature of the wireless charging device and giving the wireless charging device high heat dissipation efficiency. However, this device still has room for improvement for charging stations: the cold airflow enters the housing through the air vent, making it impossible to adjust the distribution of the cold airflow according to the different heat generated by different charging efficiencies. This makes it difficult to achieve centralized cooling of high-heat modules, which may affect the lifespan of components. Utility Model Content

[0005] The purpose of this invention is to provide a DC charging pile with flexible heat dissipation air duct switching, which has the advantages of improving heat dissipation efficiency, adapting to the heat dissipation requirements of different charging modules, enhancing dustproof effect and extending equipment service life.

[0006] The technical solution adopted by this utility model to achieve the above objectives is as follows:

[0007] A DC charging pile with flexible heat dissipation duct switching includes a bottom shell, a charging module disposed in the bottom shell, a cover plate and a charging pile cover; a baffle is provided in the bottom shell, and the cover plate cooperates with the charging module and the baffle plate to form an independent space I; the charging pile cover covers the independent space I and is fixed to the bottom shell, and cooperates with the bottom shell to form an independent space II.

[0008] Preferably, the independent space I is provided with an air inlet ventilation structure at the rear of the charging pile. The air inlet ventilation structure includes a first dustproof cotton and a first louver arranged sequentially at the air inlet at the rear of the independent space I, with the first louver located on the outermost side.

[0009] Preferably, the independent space II is provided with an air outlet ventilation structure at the rear of the charging pile. The air outlet ventilation structure includes a second dustproof cotton, a fan, and a fan cover, which are sequentially arranged at the air outlet at the rear of the independent space II. The fan cover is fixed to the air outlet by a cover sealing ring.

[0010] Preferably, the fan cover is provided with a second louver, and a gap is left between the second louver and the outermost part of the bottom shell.

[0011] Preferably, the first louver or fan cover is a detachable structure.

[0012] Preferably, when the charging module does not have a cooling fan, the cover can be removed, so that the independent space I and independent space II inside the charging pile can be connected to form a cooling air duct, and the fan of the air outlet ventilation structure provides power to the air duct.

[0013] Preferably, the upper part of the charging module is equipped with a control board, which is used to transmit data and monitor the working status of the charging pile.

[0014] Preferably, the rear of the charging pile cover is provided with a mounting post, and a screen for displaying the charging pile's usage status is fixed on the mounting post.

[0015] Preferably, an emergency stop button and a charging gun handle are provided on the right side of the bottom shell. A magnetic body is provided in the hole where the charging gun handle is placed, and a metal column that can be attracted by the magnetic body is provided in the corresponding part of the charging gun handle.

[0016] Preferably, independent space I is used to draw in cold air from the outside, and independent space II is used to expel hot air from the charging station. When the charging module has its own cooling fan, heat dissipation is achieved through the two independent spaces.

[0017] Compared with the prior art, this utility model has the following advantages: the combination of a detachable cover and a baffle allows for switching of heat dissipation space, adapting to modules with or without heat dissipation fans, solving the problem of structural mismatch; the layered design of the air inlet is dustproof and waterproof, extending the life of the components; the air outlet integrates filtration, power, airflow guidance, and sealing functions, efficiently dissipating heat and preventing dust backflow; the fan cover with spaced louvers directs airflow, is waterproof and prevents foreign objects, and reduces noise; the louvers and fan cover are detachable, facilitating maintenance and replacement; the control board monitors the temperature in real time and triggers airflow switching to prevent overheating; the charging gun is magnetically fixed without wear and stably stored; the independent space isolation design separates hot and cold airflows, improving heat dissipation efficiency. Attached Figure Description

[0018] Figure 1 This diagram illustrates the connection relationship between the bottom shell, the charging pile cover, the cover plate, and the charging module.

[0019] Figure 2 This is a schematic diagram of the air inlet and air outlet structure at the rear of the bottom shell.

[0020] Figure 3 This is a schematic diagram showing the connection between the cover plate and the bottom shell;

[0021] Figure 4 This is a schematic diagram showing the connection between the control board and the charging module;

[0022] Figure 5 A schematic diagram showing the positional relationship between the screen and the charging pile cover;

[0023] Figure 6 A schematic diagram showing the location of the emergency stop button and the magnetic component;

[0024] Figure 7 A schematic diagram of the charging gun handle;

[0025] Figure 8 This is a schematic diagram showing the connection between the charging gun handle and the bottom shell.

[0026] Figure 9 This is a schematic diagram of the elastic element structure in Embodiment 2 of the utility model.

[0027] Reference numerals: 1. Charging pile cover; 2. Cover plate; 3. Charging module; 4. Bottom shell; 5. First dustproof cotton; 6. Fan; 7. Cover sealing ring; 8. Fan cover; 9. Second dustproof cotton; 10. First louver; 11. Cover sealing ring; 12. Sealing groove; 13. Mounting hole; 14. Control board; 15. Screen; 16. Emergency stop button; 17. Charging gun handle; 18. Magnetic body; 19. Metal column; 20. Through hole; 21. Base; 22. Through groove; 23. Conical wall; 24. Top cover; 25. Guide wall; 26. Spring. Detailed Implementation

[0028] The technical solution of this utility model will be further described in detail below with reference to specific embodiments and accompanying drawings:

[0029] Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0030] Example 1: See Figures 1-3 A DC charging pile with flexibly switchable heat dissipation ducts includes a base shell 4, a charging module 3 disposed within the base shell 4, a cover plate 2, and a charging pile cover 1. A baffle is provided inside the base shell 4, and the cover plate 2, in conjunction with the charging module 3 and the baffle, forms an independent space I. The charging pile cover 1 covers the independent space I and is fixed to the base shell 4, forming an independent space II in conjunction with the base shell 4. By adjusting the installation state of the cover plate 2, the two independent spaces can be connected or isolated.

[0031] The bottom shell 4 refers to the basic frame structure supporting the charging module 3, which can be implemented using a welded metal box. Internal baffles are used to divide airflow channels. The cover plate 2 is a movable plate covering the charging module 3, which can be made of aluminum alloy sheet with sealing grooves. It connects to the bottom shell 4 and the baffle through mounting holes 13 to form independent space I. Independent space I is the enclosed area enclosed by the cover plate 2, the charging module 3, and the baffle, used to guide the directional flow of external cold air. Independent space II is the top cavity formed by the charging pile cover 1 and the bottom shell 4, used to create a hot air exhaust path.

[0032] When the charging module 3 has its own cooling fan, the cover plate 2 remains installed, completely isolating independent space I from independent space II. Cool air enters independent space I through the rear air inlet of the bottom shell 4, is cooled by the charging module 3, and is then exhausted by its own cooling fan. Independent space II forms an auxiliary cooling area to prevent hot air from accumulating at the top of the pile. When the cover plate 2 is removed, the two independent spaces merge into a through-ventilation duct, allowing external cool air to flow through the charging module 3 and exit from the rear of independent space II.

[0033] Compared to traditional charging piles that use a single air duct design, this solution constructs a switchable independent heat dissipation space through a combination of a detachable cover plate 2 and a baffle. When the module has its own cooling fan, the two spaces operate in isolation to eliminate external interference; when the module does not have a cooling fan, the spaces are combined to form a forced air duct. This dynamic adjustment capability significantly improves the compatibility between the heat dissipation system and the charging module 3.

[0034] The above technical solution solves the problem of mismatch between the heat dissipation structure of the charging pile and the characteristics of the modules. The independent space isolation design avoids the mixing of hot and cold airflows, and the removable cover 2 enables rapid switching of heat dissipation modes. When the charging pile has its own cooling fan, the two independent spaces respectively complete the supply of cold air and the exhaust of hot air; when there is no cooling fan, the through-ventilation duct, together with the centralized cooling fan, forms a directional cooling airflow. This flexible structure allows the charging pile to adapt to charging modules 3 with different heat dissipation methods, maintain a stable operating temperature in high-temperature environments, and ensure charging efficiency and equipment reliability.

[0035] The independent space I is equipped with an air inlet ventilation structure at the rear of the charging pile. The air inlet ventilation structure includes a first dustproof cotton 5 and a first louver 10, which are sequentially installed at the air inlet at the rear of the independent space I. The first louver 10 is located on the outermost side.

[0036] The independent space I refers to the enclosed area formed by the baffle and cover plate 2 inside the bottom shell 4 and the charging module 3. Specifically, it can be divided using metal or plastic partitions to isolate the external environment from the working area of ​​the charging module 3. The air inlet ventilation structure refers to the component located at the rear of the independent space I for introducing external air. It can be implemented using a perforated plate or grille structure to control the airflow direction and filter impurities. The first dustproof cotton 5 refers to the fiber filter material covering the air inlet, specifically 50ppi pore size dustproof cotton that effectively filters dust. The first louver 10 refers to the guide plate structure installed on the outermost side of the air inlet, specifically composed of angled metal or plastic blades arranged to prevent rainwater or foreign objects from entering while allowing air circulation.

[0037] At the rear air inlet of Independent Space I, air filtration and protection are achieved through the cooperation of the first dustproof cotton 5 and the first louver 10. External air first passes through the first louver 10, entering the ventilation structure through the gaps between the blades, where large particles are blocked on the outside. The air then flows through the first dustproof cotton 5, further filtering fine dust, before finally entering the interior of Independent Space I to provide the cooling air needed for the charging module 3. The inclined blade design of the first louver 10 effectively prevents rainwater or foreign objects from directly intruding, and its outermost position facilitates disassembly and maintenance.

[0038] This application solves the problem of dust contamination and rainwater intrusion at the air inlet of the charging pile by using a layered design of dustproof cotton and louvers. It extends the service life of internal components while ensuring heat dissipation efficiency, and reduces maintenance costs through modular structure design. It achieves dual functions of dustproof and waterproof while improving filtration accuracy. In addition, the detachable feature of the louvers simplifies the cleaning and maintenance process.

[0039] The independent space II is equipped with an air outlet ventilation structure at the rear of the charging pile. The air outlet ventilation structure includes a second dustproof cotton 9, a fan 6, and a fan cover 8, which are sequentially installed at the air outlet at the rear of the independent space II. The fan cover 8 is fixed to the air outlet by a cover sealing ring 7.

[0040] The second dustproof cotton 9 refers to the filter assembly installed inside the air outlet, specifically a 10ppi pore size dustproof cotton, used to prevent external dust from entering the charging pile. The fan 6 refers to the power unit installed at the air outlet, which can be an axial flow structure, generating airflow through rotating blades to accelerate the exhaust of hot air. The fan cover 8 refers to the protective structure covering the outside of the fan 6, which can be a metal stamping or injection molding part, used to prevent foreign objects from contacting the fan 6 blades and guide the airflow direction. The cover sealing ring 7 refers to the annular component installed between the fan cover 8 and the air outlet, which can be made of rubber or silicone, used to fill the assembly gap to prevent air leakage.

[0041] When heat is generated inside the charging station, the ventilation structure of the air outlet in independent space II begins to operate. The second dustproof cotton 9 first filters the airflow entering the outlet, preventing dust from accumulating inside the fan 6. After the fan 6 starts, it generates negative pressure, drawing the hot air from independent space II outwards. The hot air is guided by the fan cover 8, forming a directional airflow. During this process, the cover sealing ring 7 elastically deforms to tightly fit the contact surface between the fan cover 8 and the air outlet, preventing airflow leakage and reduced heat dissipation efficiency. This structure, through multi-stage synergy, achieves efficient directional exhaust of hot air.

[0042] This application integrates dustproof, power output, airflow protection and sealing functions into the air outlet structure, which not only solves the problem of disordered airflow diffusion, but also avoids the impact of dust backflow on internal components, significantly improving the operational stability of the charging pile heat dissipation system, maintaining heat dissipation efficiency in high temperature or high dust environment, and reducing the risk of equipment failure due to poor sealing.

[0043] The fan cover 8 is equipped with a second louver, and there is a gap between the second louver and the outermost part of the bottom shell 4.

[0044] The fan cover 8 refers to the shell structure covering the outside of the fan 6 for protection and airflow guidance. It can be made of stamped metal or injection molded metal. The second louver on its surface can block foreign objects from entering and guide the airflow direction. The spacing refers to the air buffer area formed between the outer edge of the second louver and the charging pile shell. It can be achieved by setting a fixed bracket or a buckle structure. This spacing can prevent rainwater from directly contacting the louver blades and provide space for airflow diffusion.

[0045] When the fan 6 is operating, the airflow is filtered through the second dustproof cotton 9, accelerated by the fan 6, and discharged outwards through the second louver of the fan cover 8. The tilt angle of the second louver can be set from 30 degrees to 60 degrees, for example, a 45-degree tilt design, to create a directional flow of the discharged hot air. The gap between the louver and the outer shell can be controlled from 5 mm to 15 mm, for example, a 10 mm gap is reserved. This gap allows a small amount of air to form vortices outside the louver, effectively reducing the possibility of direct infiltration of external rainwater. In the event of heavy rainfall, rainwater forms an air barrier layer in the gap area, reducing the risk of water droplets entering the fan 6.

[0046] This solution integrates a spaced louver structure into the fan housing 8, maintaining ventilation efficiency while creating a double waterproof barrier through the spacing design. Compared to a straight-through heat dissipation vent design, this structure further reduces the probability of rainwater intrusion under the same airflow conditions, improving the equipment's waterproof performance while ensuring heat dissipation efficiency. The air layer formed by the louver spacing can block externally splashed mud and sand particles, preventing foreign objects from entering the fan 6 and causing damage to the fan blades, thus extending the maintenance cycle of the heat dissipation system. This structure also reduces the whistling noise generated by high-speed airflow, lowering the equipment's operating noise.

[0047] The first louver 10 or the fan cover 8 is a detachable structure. When the first louver 10 at the air inlet becomes dusty due to long-term use, affecting the air intake, it can be removed and cleaned separately by releasing the fixing device. When the fan 6 needs maintenance, only the fan cover 8 needs to be removed to directly access the main body of the fan 6. This detachable design allows for flexible maintenance of the two ventilation components according to actual working conditions. At the same time, louvers with different blade angles or fan covers 8 of different sizes can be replaced according to the heat dissipation requirements of different charging modules 3.

[0048] When the charging module 3 does not have a cooling fan, the cover plate 2 can be removed, so that the independent space I and independent space II inside the charging pile can be connected to form a cooling air duct, and the fan 6 of the air outlet ventilation structure provides power to the air duct.

[0049] The cover plate 2 is removable, meaning it is fixed to the mounting holes 13 on the bottom shell 4 by clips or bolts. It can be manually removed when switching heat dissipation modes, facilitating quick changes to the internal spatial layout. The connection between independent spaces I and II to form a heat dissipation duct means that removing the cover plate 2 breaks the original isolation, allowing cool air to enter independent space I from the air inlet, flow through the charging module 3, enter independent space II, and finally exit through the air outlet, forming a continuous airflow path. The duct is powered by an electrically driven fan 6 installed at the air outlet, which forcibly guides external cool air into the duct and accelerates the exhaust of hot air, ensuring efficient airflow circulation.

[0050] When the charging module 3 is not equipped with its own cooling fan, the independent spaces I and II are merged into a single heat dissipation channel by removing the cover plate 2. At this time, the first dustproof cotton 5 and the first louver 10 of the air inlet ventilation structure allow external cold air to enter independent space I, flowing over the surface of the charging module 3 and carrying away heat. Subsequently, hot air enters independent space II, where the suction force generated by the fan 6 drives the hot air through the second dustproof cotton 9 and the fan cover 8 to be discharged outside the pile. In this mode, the fan 6 serves as the sole power source, replacing the cooling fan missing in the charging module 3, ensuring the normal operation of the heat dissipation system.

[0051] The above technical solution achieves flexible airflow switching through the detachable cover plate 2 and the shared fan 6. Even when the module lacks a cooling fan, it can still achieve heat dissipation through a unified airflow, avoiding redundancy or failure of the cooling system due to differences in module configuration. This solves the problem of ineffective heat dissipation for the charging module 3 when it lacks its own cooling fan. By integrating an independent space with the shared fan 6 to achieve dynamic airflow switching, it reduces module design complexity and minimizes increased energy consumption and maintenance costs caused by mismatched heat dissipation structures.

[0052] The bottom shell 4 has a sealing groove 12 at the upper end, which can accommodate the cover sealing ring 11. The charging pile cover 1 is installed and fixed to the bottom shell 4 through the sealing ring and the mounting hole 13.

[0053] See Figure 4 The charging module 3 has a control board 14 on its upper part. The control board 14 is used to transmit data and monitor the working status of the charging pile. The control board 14 is an electronic component that integrates data processing and signal transmission functions. Specifically, it can be implemented by using a multi-layer circuit board with a microprocessor, communication chip and sensor interface. It can achieve real-time monitoring by collecting the temperature, voltage and current parameters of the charging module 3.

[0054] The control board 14 is positioned above the charging module 3 and is connected to the cooling fan, temperature sensor, and power management unit of the charging module 3 via cables. When the charging pile is operating under high load, the control board 14 continuously receives feedback signals from the temperature sensor. If the temperature of the charging module 3 exceeds a preset threshold, it triggers the switching control logic of the cooling duct. For example, when the charging module 3 has its own cooling fan, the control board 14 can simultaneously coordinate the airflow paths of independent spaces I and II. In the cooling mode with the cover plate 2 removed, the control board 14 will adjust the speed of the fan 6 to adapt to the new airflow structure. This achieves real-time and accurate monitoring of the operating status of the charging module 3, ensuring that the cooling system can quickly switch operating modes according to actual temperature changes, effectively preventing charging power reduction or equipment overheating damage due to delayed heat dissipation, and providing reliable data support for remote operation and maintenance.

[0055] See Figure 5The charging pile cover 1 has a mounting post at the rear, and a screen 15 for displaying the charging pile's usage status is fixed on the mounting post.

[0056] See appendix Figures 6-8 The bottom shell 4 has an emergency stop button 16 and a charging gun handle 17 on its right side. A magnet 18 is installed in the hole where the charging gun handle 17 is placed, and a metal post 19, which can be attracted by the magnet 18, is located on the corresponding part of the charging gun handle 17. When not in use, the charging gun handle 17 is placed in the hole on the right side of the shell. The magnet 18 embedded in the hole attracts the metal post 19 on the handle through magnetic force, thus fixing the handle. When the charging gun needs to be removed, the operator only needs to apply external force to overcome the magnetic force to remove the handle. The emergency stop button 16 is located adjacent to the charging gun handle 17 for quick operation in emergencies. This achieves contactless fixing, avoids wear on mechanical parts, simplifies the structure, and improves reliability. It also ensures stable storage of the charging gun when not in use, reducing the risk of equipment damage due to accidental drops, while improving operational convenience and safety.

[0057] Independent space I is used to draw in cold air from the outside, and independent space II is used to expel hot air from the charging station. When the charging module 3 has its own cooling fan, it achieves heat dissipation through the two independent spaces.

[0058] When the charging module 3 has its own cooling fan, cold air enters the charging pile through the air inlet of independent space I, absorbs heat by flowing over the surface of the charging module 3, and is converted into hot air. The hot air is then driven by the cooling fan into independent space II, and finally discharged outside the charging pile through the air outlet. The two independent spaces form physically isolated hot and cold dual channels to avoid mutual interference between the hot and cold air in the flow path.

[0059] Compared with existing technologies, current charging piles typically use a single air duct or passive heat dissipation structure, which easily leads to the mixing of hot and cold air inside the pile, resulting in a decrease in heat dissipation efficiency. However, this solution uses the separation design of independent spaces I and II to form a directional circulation of cold air intake and hot air exhaust. The heat dissipation path is clear and the airflow resistance is reduced. This achieves directional air duct control when the charging module 3 has its own cooling fan. The flow paths of cold and hot air are completely separated, avoiding airflow short circuits and improving heat dissipation efficiency. At the same time, it adapts to different heat dissipation methods of the charging module 3, ensuring stable operation of the equipment in high-temperature environments.

[0060] Example 2:

[0061] Based on Embodiment 1 of the present invention: see Figure 9The charging pile cover 1 is above the cover plate 2 and there is a height gap between the two. The cover plate 2 has at least two through holes 20 and an elastic element is provided in the gap. The elastic element includes: a base 21, which is installed on the upper end of the cover plate 2, has a through groove 22 in the center and communicates with the through hole 20, and has a conical wall 23 on the outside. The cross-section of the conical wall 23 gradually increases from top to bottom; a top cover 24, which covers the base 21 and forms a gap, and has a guide wall 25 that cooperates with the conical wall 23; and a spring 26, which connects the top cover 24 and the base 21, so that the top cover 24 is pre-tightly abutted against the lower end of the charging pile cover 1.

[0062] It should be noted that in both Embodiment 1 and Embodiment 2 of the present invention, the charging pile cover 1 covers the upper outer side of the cover plate 2, and the bottom shell 4 has mounting holes 13 of different heights to achieve different installation heights between the cover plate 2 and the charging pile cover 1.

[0063] The horizontally spaced heights ensure that the elastic elements corresponding to each through hole 20 are in the same pressure environment, thus avoiding abnormal flow in a single through hole 20 due to local airflow disturbances.

[0064] When the cooling fan of charging module 3 is running at different power levels or in standby mode, the airflow pressure within the height interval differs from the pressure difference formed by the pressure in independent space II. Specifically:

[0065] During fast charging, the cooling fan operates at high power, increasing the pressure difference within the height interval. This causes the top cover 24 to move down and compress the spring 26. At the same time, the gap between the guide wall 25 and the conical wall 23 narrows. The cold airflow enters the independent space II only through the tiny gap above the through hole 20. Most of the cold airflow is forced into the area where the core charging module 3 is located by the cooling fan and enters the independent space II, avoiding the diversion of cold energy to unnecessary areas. This achieves automatic protection of the core charging module 3 under high load conditions, preventing overheating and charging function failure.

[0066] In slow charging or standby mode, the cooling fan operates at low power, reducing the pressure difference within the height interval. The reduced pressure on the top cover 24 causes the spring 26 to partially recover its compression, leading to the top cover 24 moving upwards. This increases the space between the guide wall 25 and the conical wall 23, allowing more cool airflow to be diverted through the through-hole 20 to the control board 14 and display screen in the hot zone, achieving auxiliary cooling. Simultaneously, this reduces the temperature difference between independent spaces I and II, lowering thermal stress and reducing the thermal expansion deformation of the cover plate 2, charging pile cover 1, and bottom shell 4, thus reducing the risk of charging pile components detaching. It also reduces the probability of condensation, breaking the electrical corrosion chain caused by the humid and hot environment. Furthermore, the diversion of cool airflow alleviates the negative pressure intensity in the cold zone, which is beneficial for reducing the speed of the cooling fan and decreasing the overall energy consumption of the charging pile. The above technical solutions improve the long-term reliability, operational safety, and maintenance economy of the charging pile.

[0067] During operation, the charging pile cover 1 and cover plate 2 may experience relative displacement due to thermal expansion or vibration. The spring 26 of the elastic element maintains a tight contact between the top cover 24 and the charging pile cover 1 through preload, compensating for displacement deviation and preventing airflow leakage. At the same time, the inclined cooperation of the conical wall 23 and the guide wall 25 forms a guiding flow of air towards the bottom of the gap, further reducing gap leakage and ensuring the accuracy of airflow regulation.

[0068] 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.

Claims

1. A DC charging pile with flexibly switchable heat dissipation airflow, characterized in that: It includes a bottom shell (4), a charging module (3) disposed in the bottom shell (4), a cover plate (2) and a charging pile cover (1); a baffle is provided in the bottom shell (4), and the cover plate (2) cooperates with the charging module (3) and the baffle to form an independent space I; the charging pile cover (1) covers the independent space I and is fixed to the bottom shell (4), and cooperates with the bottom shell (4) to form an independent space II.

2. The DC charging pile with flexibly switchable heat dissipation air ducts according to claim 1, characterized in that: The independent space I is provided with an air inlet ventilation structure at the rear of the charging pile. The air inlet ventilation structure includes a first dustproof cotton (9) and a first louver (10) arranged sequentially at the air inlet at the rear of the independent space I. The first louver (10) is located on the outermost side.

3. A DC charging pile with flexibly switchable heat dissipation air ducts according to claim 2, characterized in that: The independent space II is provided with an air outlet ventilation structure at the rear of the charging pile. The air outlet ventilation structure includes a second dustproof cotton (5), a fan (6) and a fan cover (8) arranged sequentially at the air outlet at the rear of the independent space II. The fan cover (8) is fixed to the air outlet by a cover sealing ring (7).

4. A DC charging pile with flexibly switchable heat dissipation air ducts according to claim 3, characterized in that: The fan cover (8) is provided with a second louver, and there is a gap between the second louver and the outermost part of the bottom shell (4).

5. A DC charging pile with flexibly switchable heat dissipation air ducts according to claim 3, characterized in that: The first louver (10) or fan cover (8) is a detachable structure.

6. A DC charging pile with flexibly switchable heat dissipation air ducts according to claim 3, characterized in that: When the charging module (3) does not have a cooling fan, the cover plate (2) can be removed, so that the independent space I and the independent space II in the charging pile can be connected to form a cooling air duct, and the fan (6) of the air outlet ventilation structure provides power to the air duct.

7. A DC charging pile with flexibly switchable heat dissipation air ducts according to claim 1, characterized in that: The charging module (3) is equipped with a control board (14) on its upper part. The control board (14) is used to transmit data and monitor the working status of the charging pile.

8. A DC charging pile with flexibly switchable heat dissipation air ducts according to claim 1, characterized in that: The charging pile cover (1) is provided with a mounting post at the rear, and the mounting post is fixed with a screen (15) for displaying the charging pile usage status.

9. A DC charging pile with flexibly switchable heat dissipation air ducts according to claim 1, characterized in that: The bottom shell (4) is provided with an emergency stop button (16) and a charging gun handle (17) on the right side. A magnetic body (18) is provided in the hole where the charging gun handle (17) is placed. A metal column (19) that can be attracted by the magnetic body (18) is provided at the corresponding part of the charging gun handle (17).

10. A DC charging pile with flexibly switchable heat dissipation air ducts according to claim 1, characterized in that: The independent space I is used to draw in cold air from the outside, and the independent space II is used to discharge hot air out of the pile. When the charging module (3) has its own cooling fan, it achieves heat dissipation through the two independent spaces.

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