A liquid cooling heat dissipation system for a high-power charging pile and the charging pile

Abstract

The application relates to the technical field of charging piles and discloses a liquid cooling heat dissipation system for a high-power charging pile and the charging pile, wherein the liquid cooling heat dissipation system for the high-power charging pile comprises a heat dissipation frame and a water tank, the water tank is internally provided with cooling liquid, and the liquid cooling heat dissipation system further comprises heat conduction pipes, a heat conduction assembly, a circulation assembly and a heat dissipation assembly; a plurality of heat conduction pipes are internally and intermittently arranged in the heat dissipation frame; a plurality of convex edges are circumferentially arranged in the heat conduction pipes; the convex edges are arranged in a spiral structure; when the cooling liquid flows through the heat conduction pipes, the convex edges can increase the contact area of the cooling liquid; the heat conduction assembly is arranged on the heat dissipation frame; the circulation assembly is arranged on the water tank; and the heat dissipation assembly is arranged on the circulation assembly. Through the technical scheme, the problem that the cooling mode in the prior art is difficult to quickly and uniformly dissipate a large amount of heat generated by electronic components, thereby affecting the normal work of the high-power charging pile, is solved.

Description

Technical Field

[0001] This invention relates to the field of charging pile technology, specifically to a liquid cooling heat dissipation system and a charging pile for high-power charging piles. Background Technology

[0002] With the rapid development of the electric vehicle industry, high-power charging piles are widely used in public buildings, public parking lots, residential parking lots and professional charging stations due to their advantages of high charging efficiency and wide compatibility with various models. A charging pile is a charging device that provides charging services for electric vehicles. Charging piles are mainly divided into floor-mounted charging piles and wall-mounted charging piles. The input end of the charging pile is generally connected to the AC power grid, and the output end charges electric vehicles through a charging plug. It integrates a large number of electronic components such as rectifiers and power modules.

[0003] Because these components continuously generate a lot of heat when operating under high current and high voltage conditions, and the working stability of electronic components is closely related to the operating temperature, the heat dissipation system has become a core supporting component for the normal and stable operation of high-power charging piles. Its heat dissipation performance directly determines the charging efficiency, operational stability and service life of the charging pile.

[0004] In existing technologies, the heat dissipation function of high-power charging piles mainly relies on cooling devices. Among them, forced air cooling and liquid cooling are widely used heat dissipation methods. Forced air cooling uses a cooling fan to introduce cool air from the outside, and the heat on the surface of electronic components is carried away by air convection. However, forced air cooling is greatly affected by the ambient temperature. When the ambient temperature is high, the temperature difference between the cool air and the surface of the electronic components becomes smaller, resulting in a decrease in cooling efficiency. On the other hand, the heat pipes of existing liquid cooling systems are mostly designed with smooth inner walls, resulting in a small contact area between the coolant and the inner wall of the heat pipe. Moreover, the coolant flows in a straight line in the pipe with a short residence time, resulting in relatively low heat transfer efficiency. It is difficult to quickly and fully absorb the large amount of heat generated by electronic components, which can easily lead to local heat concentration, affecting the uniformity and stability of overall heat dissipation, and thus affecting the normal operation of high-power charging piles. Summary of the Invention

[0005] This invention proposes a liquid cooling heat dissipation system and a charging pile for high-power charging piles, which solves the problem that the existing cooling methods are unable to quickly and evenly dissipate the large amount of heat generated by electronic components, thus affecting the normal operation of high-power charging piles.

[0006] The technical solution of the present invention is as follows: A liquid cooling system for high-power charging piles includes a heat sink and a water tank, the water tank containing coolant, and further includes: Heat pipes, and several heat pipes are installed at intervals inside the heat sink; A heat-conducting component is provided on the heat sink, which is used to transfer the heat of the electronic components in the charging pile to the coolant in the heat-conducting pipe. A circulation component is provided on the water tank for sending the coolant in the water tank into the heat pipe, so that the coolant can circulate and conduct heat. A heat dissipation assembly is mounted on the circulation assembly to reduce the temperature of the coolant.

[0007] To dissipate heat from the internal electronic components of the charging pile, the heat-conducting component includes: The heat pipe has several protruding ridges arranged in a circumferential shape inside. The protruding ridges are arranged in a spiral structure. When the coolant flows through the heat pipe, the protruding ridges can increase the contact area of ​​the coolant. A heat-conducting plate is provided, wherein a plurality of heat-conducting plates are installed at equal intervals inside the heat sink, and the heat-conducting plates are fixedly connected to the heat-conducting pipe; Each heat-conducting tube has a drain pipe at its output end, and each drain pipe is connected to the water tank.

[0008] To allow coolant to flow within the heat-conducting assembly, the circulation assembly includes: A water pump, which is fixedly installed on the water tank, and the input end of the water pump is connected to the water tank through an inlet pipe; An assembly rack, wherein several drainage racks are installed at equal intervals inside the assembly rack, and the drainage racks are hollow inside, with each drainage rack corresponding to a number of heat-conducting pipes; The output ends of several drainage racks are connected to the conveying pipes, and the several conveying pipes are respectively connected to the input ends of several heat-conducting pipes. A water distribution section is installed at the bottom of the assembly frame and is used to deliver coolant into the interior of several drainage frames.

[0009] Each of the drainage racks is provided with a ventilation slot, and several through slots are provided on the front and rear sides of the assembly rack at positions corresponding to the ventilation slots.

[0010] Furthermore, the water distribution unit includes a water distribution cylinder, which is installed at the bottom of the assembly frame. The input end of the water distribution cylinder is connected to the output end of the water pump through a water inlet pipe. Each input end of the drainage frame is connected to a one-way valve, and each one-way valve is connected to the water distribution cylinder.

[0011] In order to dissipate the heat of the coolant, the heat dissipation assembly includes an exhaust frame, which is mounted on the assembly frame. The exhaust frame has several branch air ducts and a main air duct inside. The several branch air ducts are all connected to the main air duct. The several branch air ducts correspond one-to-one with several ventilation slots. Each branch air duct has several ventilation holes spaced apart on the side near the assembly frame.

[0012] It also includes an exhaust duct and a blower. The exhaust duct is installed on the exhaust frame and is connected to the main air duct. The output end of the blower is connected to the exhaust duct.

[0013] A charging pile, employing the liquid cooling heat dissipation system for high-power charging piles as described in claim 7, includes a charging pile body, a heat dissipation frame installed inside the charging pile body, an exhaust frame installed on the charging pile body, and all electronic components within the charging pile body are installed on the heat dissipation frame.

[0014] The working principle and beneficial effects of this invention are as follows: 1. In this invention, the spiral ridges distributed in a circular pattern inside the heat pipe not only increase the contact area between the coolant and the inner wall of the heat pipe, but also guide the coolant to flow in a spiral shape, prolonging the residence time of the coolant in the heat pipe. Combined with the heat-conducting plate fixedly connected to the heat pipe, the heat generated by the electronic components of the charging pile can be quickly and evenly transferred to the coolant. At the same time, each heat pipe is independently connected to a drain pipe to ensure that the coolant after absorbing heat can quickly flow back to the water tank for cooling, further improving the overall heat conduction efficiency and avoiding local heat concentration.

[0015] 2. In this invention, the water distribution cylinder can buffer and divert the coolant. Combined with the one-way valve at the input end of each drain rack, it can effectively prevent coolant backflow and ensure that the coolant is stably and evenly delivered to the drain rack corresponding to each heat pipe. Then, it is accurately delivered to each heat pipe through the delivery pipe, so as to achieve a balanced coolant flow rate for each heat pipe, avoid local heat dissipation insufficiency or waste caused by uneven flow, and improve the uniformity of heat dissipation.

[0016] 3. In this invention, the ventilation slots on the drainage rack are precisely aligned with the through slots on the front and rear sides of the assembly rack to form a through airflow channel; the branch air ducts and ventilation holes in the heat dissipation component that correspond one-to-one with the ventilation slots enable the cold air generated by the blower to be precisely blown toward the drainage rack, and to exchange heat efficiently with the high-temperature coolant in the drainage rack, quickly removing the heat from the coolant. The hot air after heat exchange is discharged through the through slots, thereby enhancing the heat dissipation effect and improving the heat exchange efficiency. Attached Figure Description

[0017] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0018] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the overall structure from another angle in this invention; Figure 3 This is a cross-sectional three-dimensional structural schematic diagram of the present invention; Figure 4 This is a cross-sectional view of the heat-conducting component in this invention. Figure 5 This is a cross-sectional view of the heat pipe, ridge, drain pipe, and delivery pipe in this invention. Figure 6 This is a cross-sectional view of the interaction between the circulation component and the heat dissipation component in this invention. Figure 7 This is a cross-sectional view of the circulation component in this invention; Figure 8 This is a cross-sectional structural diagram showing the cooperation of the drainage frame, conveying pipe, ventilation channel, water distribution cylinder and one-way valve in this invention; Figure 9 This is a cross-sectional view of the disassembled circulation component and heat dissipation component in this invention.

[0019] In the diagram: 1. Heat sink; 2. Water tank; 3. Heat pipe; 4. Raised ridge; 5. Heat plate; 6. Drain pipe; 7. Water pump; 8. Water inlet pipe; 9. Assembly frame; 10. Drain frame; 11. Delivery pipe; 12. Ventilation slot; 13. Through slot; 14. Water distribution cylinder; 15. Water inlet pipe; 16. One-way valve; 17. Exhaust frame; 1701. Branch air duct; 1702. Main air duct; 18. Ventilation hole; 19. Exhaust duct; 20. Blower; 21. Charging pile body. Detailed Implementation

[0020] The technical solutions of the present invention will be clearly and completely described below with reference to the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0021] This embodiment proposes a liquid cooling system for high-power charging piles, including a heat sink 1 and a water tank 2. The water tank 2 is filled with coolant, such as... Figures 1 to 3As shown, it also includes heat pipes 3, heat conduction components, circulation components, and heat dissipation components. Several heat pipes 3 are installed at intervals inside the heat dissipation frame 1. A heat conduction component is provided on the heat dissipation frame 1 to transfer the heat of the electronic components in the charging pile to the coolant in the heat pipes 3. The heat conduction component includes protruding ribs 4, heat conduction plates 5, and drain pipes 6. Several protruding ribs 4 are arranged in a circumferential shape inside the heat pipes 3. The protruding ribs 4 are set in a spiral structure. When the coolant flows through the heat pipes 3, the protruding ribs 4 can increase the contact area of ​​the coolant. Several heat conduction plates 5 are installed at equal intervals inside the heat dissipation frame 1. The heat conduction plates 5 are fixedly connected to the heat pipes 3. The output end of each heat pipe 3 is connected to a drain pipe 6. Each drain pipe 6 is connected to the water tank 2.

[0022] The coolant is generally selected as ethylene glycol coolant.

[0023] The electronic components inside the charging pile are tightly attached to the heat-conducting plate 5 and the heat sink 1. During the heat dissipation process, the coolant flows within the heat-conducting pipe 3 through the circulation assembly. Figure 4 , Figure 5 As shown, the spiral protrusions 4 arranged circumferentially on the inner wall of the heat pipe 3 not only increase the contact area between the coolant and the inner wall of the heat pipe 3, but also guide the coolant to flow in a spiral shape, prolonging the residence time of the coolant in the heat pipe 3, so that the coolant can fully absorb the heat transferred by the electronic components. This coolant flows back to the water tank 2 through the drain pipe 6 for cooling, completing the heat dissipation. At the same time, through the setting of the heat dissipation component, the coolant can be further cooled during the delivery process, thereby improving the heat conduction efficiency.

[0024] A circulation assembly is installed on the water tank 2 to deliver the coolant in the water tank 2 into the heat conduction pipes 3, so that the coolant circulates and conducts heat. The circulation assembly includes a water pump 7, an assembly frame 9, a delivery pipe 11, and a water distribution section. The water pump 7 is fixedly installed on the water tank 2. The input end of the water pump 7 is connected to the water tank 2 through the water inlet pipe 8. Several drainage racks 10 are installed at equal intervals inside the assembly frame 9. The drainage racks 10 are hollow inside. Several drainage racks 10 correspond one-to-one with several heat conduction pipes 3. Each drainage rack 10 has a ventilation slot 12. Several through slots 13 are opened on the front and rear sides of the assembly frame 9 at positions corresponding to the ventilation slots 12. The output ends of several drainage racks 10 are connected to delivery pipes 11. Several delivery pipes 11 are connected to the input ends of several heat conduction pipes 3 respectively. The water distribution section is installed at the bottom of the assembly frame 9 to deliver coolant into the drainage racks 10.

[0025] When supplying coolant, water pump 7 is turned on. Water pump 7 draws coolant from water tank 2 through inlet pipe 8, pressurizes the coolant, and then delivers it to the water distribution section. Figure 6 , Figure 7 , Figure 8As shown, the water distribution unit evenly distributes the coolant to each drain rack 10. After the coolant passes through the drain rack 10, it can enter the heat conduction pipe 3 through the delivery pipe 11. Through the setting of the through groove 13 and the ventilation groove 12, a continuous air flow channel is formed. Since each branch air duct 1701 of the exhaust rack 17 corresponds to the corresponding ventilation groove 12 of the drain rack 10, the length of the branch air duct 1701 matches the length of the drain rack 10, and the ventilation hole 18 of the branch air duct 1701 near the assembly rack 9 is set directly opposite the ventilation groove 12, it is ensured that the airflow generated by the heat dissipation component can be accurately blown into the ventilation groove 12 and exchange heat with the coolant in the drain rack 10, thereby ensuring the cooling efficiency of the coolant.

[0026] The water distribution unit includes a water distribution cylinder 14, which is installed at the bottom of the assembly frame 9. The input end of the water distribution cylinder 14 is connected to the output end of the water pump 7 through the water inlet pipe 15. Each drainage frame 10 has a one-way valve 16 connected to its input end, and each one-way valve 16 is connected to the water distribution cylinder 14.

[0027] When the water pump 7 inputs the coolant into the water distribution cylinder 14 through the water inlet pipe 15, the water distribution cylinder 14 buffers and diverts the coolant, and then sends the coolant into the corresponding drain rack 10 through each one-way valve 16. The one-way valve 16 is designed to prevent the coolant from flowing back, ensuring that the coolant can be stably and evenly delivered to each drain rack 10.

[0028] The heat dissipation assembly is mounted on the circulation assembly to reduce the temperature of the coolant. The heat dissipation assembly includes an exhaust bracket 17, such as... Figure 9 As shown, the exhaust frame 17 is installed on the assembly frame 9. The exhaust frame 17 has several branch air ducts 1701 and a main air duct 1702 inside. The branch air ducts 1701 are all connected to the main air duct 1702. The branch air ducts 1701 correspond one-to-one with several ventilation slots 12. Each branch air duct 1701 has several ventilation holes 18 spaced apart on the side near the assembly frame 9. It also includes an exhaust pipe 19 and a blower 20. The exhaust pipe 19 is installed on the exhaust frame 17 and is connected to the main air duct 1702. The output end of the blower 20 is connected to the exhaust pipe 19.

[0029] When cooling the coolant passing through the drain rack 10, the blower 20 is started. The cold air generated by the blower 20 is sent into the main air duct 1702 through the exhaust pipe 19. The main air duct 1702 evenly distributes the cold air to each branch air duct 1701. The airflow blows through the ventilation holes 18 on the branch air duct 1701 toward the ventilation slots 12 of the drain rack 10. At this time, the coolant flows through the inside of the drain rack 10, and the cold air comes into full contact with the inner wall of the drain rack 10, which can quickly remove the heat in the coolant and achieve the cooling of the coolant. The hot air after heat exchange can be discharged to the outside of the charging pile through the ventilation slots 12 and the through slots 13, completing the heat dissipation process.

[0030] A charging pile includes a charging pile body 21, a heat sink 1 installed inside the charging pile body 21, an exhaust fan 17 installed on the charging pile body 21, and all electronic components inside the charging pile body are installed on the heat sink 1.

[0031] The working principle or usage process of this invention is as follows: The electronic components inside the charging pile are tightly attached to the heat-conducting plate 5 and the heat sink 1. When heat dissipation is required, the water pump 7 is turned on. The water pump 7 draws coolant from the water tank 2 through the water inlet pipe 8. After pressurizing the coolant, it is fed into the water distribution cylinder 14 through the water inlet pipe 15. The water distribution cylinder 14 buffers and diverts the coolant. Then, the coolant is sent to the corresponding drain rack 10 through each one-way valve 16. The one-way valve 16 is designed to prevent the coolant from flowing back, ensuring that the coolant can be stably and evenly delivered to each drain rack 10.

[0032] After the coolant passes through the drain rack 10, it can enter the heat pipe 3 through the delivery pipe 11. The spiral protrusions 4 arranged in a circular shape on the inner wall of the heat pipe 3 can not only increase the contact area between the coolant and the inner wall of the heat pipe 3, but also guide the coolant to flow in a spiral shape, prolonging the residence time of the coolant in the heat pipe 3, so that the coolant can fully absorb the heat transferred by the electronic components. This coolant flows back to the water tank 2 through the drain pipe 6 for cooling, thus completing the heat removal.

[0033] By setting up the through slot 13 and ventilation slot 12, a continuous airflow channel is formed. When the blower 20 is started, the cold air generated by the blower 20 is sent into the main air duct 1702 through the exhaust pipe 19. The main air duct 1702 evenly distributes the cold air to each branch air duct 1701. The airflow blows through the ventilation holes 18 on the branch air duct 1701 toward the ventilation slot 12 of the drain rack 10. At this time, the coolant flows through the inside of the drain rack 10, and the cold air comes into full contact with the inner wall of the drain rack 10, which can quickly remove the heat in the coolant and achieve the cooling of the coolant. The hot air after heat exchange can be discharged to the outside of the charging pile through the ventilation slot 12 and through slot 13 to complete the heat dissipation process, thereby ensuring the cooling efficiency of the coolant.

[0034] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A liquid cooling system for high-power charging piles, comprising a heat sink (1) and a water tank (2), characterized in that, The water tank (2) contains coolant and also includes: Heat pipe (3), and several heat pipes (3) are installed at intervals inside the heat sink (1). The heat-conducting component is provided on the heat sink (1) to transfer the heat of the electronic components in the charging pile to the coolant in the heat-conducting pipe (3); A circulation component is provided on the water tank (2) for sending the coolant in the water tank (2) into the heat pipe (3) so that the coolant can circulate and conduct heat. A heat dissipation assembly is installed on the circulation assembly to reduce the temperature of the high-temperature coolant.

2. The liquid cooling system for high-power charging piles according to claim 1, characterized in that, The thermally conductive component includes: The heat pipe (3) has several protruding ridges (4) arranged in a circular shape inside. The protruding ridges (4) are set in a spiral structure. When the coolant flows through the heat pipe (3), the protruding ridges (4) can increase the contact area of ​​the coolant. Heat-conducting plate (5), a plurality of heat-conducting plates (5) are installed at equal intervals inside the heat dissipation frame (1), and the heat-conducting plate (5) is fixedly connected to the heat-conducting pipe (3); Drain pipe (6), the output end of each of the heat-conducting pipes (3) is connected to the drain pipe (6), and each of the drain pipes (6) is connected to the water tank (2).

3. The liquid cooling system for high-power charging piles according to claim 2, characterized in that, The loop component includes: A water pump (7) is fixedly installed on the water tank (2), and the input end of the water pump (7) is connected to the water tank (2) through a water inlet pipe (8); Assembly frame (9), wherein several drainage racks (10) are installed at equal intervals inside the assembly frame (9), and the drainage racks (10) are hollow inside, and several drainage racks (10) correspond one-to-one with several heat-conducting pipes (3); The output ends of several drainage racks (10) are all connected to the conveying pipe (11), and the several conveying pipes (11) are respectively connected to the input ends of several heat-conducting pipes (3). A water distribution section is installed at the bottom of the assembly frame (9) for distributing coolant into the interior of several drainage frames (10).

4. A liquid cooling system for high-power charging piles according to claim 3, characterized in that, Each of the drainage racks (10) is provided with a ventilation slot (12), and the front and rear sides of the assembly rack (9) are provided with a number of through slots (13) corresponding to the ventilation slots (12).

5. A liquid cooling system for high-power charging piles according to claim 4, characterized in that, The water distribution unit includes a water distribution cylinder (14), which is installed at the bottom of the assembly frame (9). The input end of the water distribution cylinder (14) is connected to the output end of the water pump (7) through a water inlet pipe (15). The input end of each drainage frame (10) is connected to a one-way valve (16), and each one-way valve (16) is connected to the water distribution cylinder (14).

6. A liquid cooling system for high-power charging piles according to claim 5, characterized in that, The heat dissipation assembly includes an exhaust frame (17), which is mounted on the assembly frame (9). The exhaust frame (17) has several branch air ducts (1701) and a main air duct (1702) inside. The several branch air ducts (1701) are connected to the main air duct (1702). The several branch air ducts (1701) correspond one-to-one with several ventilation slots (12). Each branch air duct (1701) has several ventilation holes (18) spaced apart on the side near the assembly frame (9).

7. A liquid cooling system for high-power charging piles according to claim 6, characterized in that, Also includes An exhaust duct (19) is installed on the exhaust frame (17) and is connected to the main air duct (1702); Blower (20), the output end of which is connected to the exhaust pipe (19).

8. A charging pile, employing the liquid cooling heat dissipation system for high-power charging piles as described in claim 7, comprising a charging pile body (21), wherein the heat dissipation frame (1) is installed inside the charging pile body (21), and the exhaust frame (17) is installed on the charging pile body (21), characterized in that, All electronic components inside the charging pile body (21) are mounted on the heat sink (1).

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