A charging pile liquid cooling pipeline anti-bubble exhaust device

Abstract

The utility model provides a kind of charging pile liquid cooling pipeline anti-bubble exhaust device, belong to charging pile heat dissipation technical field, including fin body;Fin body is located in the inner bottom of charging pile shell, and the side of fin body is equipped with fan, the other side of fin body is equipped with liquid tank, inlet and outlet pipeline valve block and circulating pump;Liquid tank is communicated with circulating pump, the top of inlet and outlet pipeline valve block is communicated with charging pile liquid cooling cavity, the bottom of inlet and outlet pipeline valve block is communicated with circulating pump by liquid cooling system pipeline A, and is communicated with fin body by liquid cooling system pipeline B;Fin body is communicated with liquid tank, and the top of liquid tank is provided with exhaust valve;Control box is equipped on liquid tank, and control box is electrically connected with circulating pump.The utility model can completely solve the problem of charging pile liquid cooling system bubble residual, improve heat dissipation and operating stability, simplify operation and maintenance and reduce cost, and be suitable for promotion.

Description

Technical Field

[0001] This utility model relates to the field of heat dissipation technology for charging piles, and in particular to an anti-air bubble exhaust device for liquid cooling pipelines in charging piles. Background Technology

[0002] With the rapid development of supercharging technology for new energy vehicles, the maximum current of DC charging guns can reach 600A. Ordinary heat dissipation methods are insufficient to meet the heat dissipation requirements of the charging gun cables. Supercharging DC charging guns mostly adopt liquid cooling structures, requiring a liquid cooling source to circulate coolant and remove heat from the cables. As a core component, the liquid cooling source must provide circulating coolant to the charging gun and ensure that the liquid cooling system is full of coolant to avoid air bubbles affecting heat dissipation efficiency and system stability.

[0003] In the prior art, Chinese patent CN207185063U discloses a liquid-cooled electronic heat sink for charging piles. This heat sink combines a liquid cooling system with an air cooling system and uses a PLC controller to achieve temperature-based intelligent start-stop control, which improves the heat dissipation efficiency of charging piles to a certain extent and solves the temperature control problem of traditional heat dissipation methods. However, this solution only focuses on optimizing heat dissipation efficiency and temperature control functions, and does not address the bubble problem in the operation of the liquid cooling system.

[0004] In practical applications, coolant is prone to generating air bubbles during circulation. The existing liquid cooling systems of these radiators lack specific venting optimization designs: First, existing radiators do not use venting elements without initial pressure; the venting valve has an opening pressure threshold, preventing venting when the system pressure does not reach the threshold, leading to air bubble retention. Second, the coolant inlet and outlet pipes of existing radiators lack anti-air bubble design, potentially causing air bubbles to remain because the pipes are positioned higher than the venting structure. These problems make the liquid cooling system prone to low-coolant alarms after a period of operation, causing the charging gun to malfunction. This not only increases product failure rates and affects user experience but also significantly increases maintenance costs, making it difficult to meet the high stability and reliability requirements of supercharging liquid cooling systems. Utility Model Content

[0005] The purpose of this invention is to overcome the shortcomings of existing radiators, which easily lead to air bubble retention and liquid cooling systems, which are prone to low liquid warnings, and to provide a charging pile liquid cooling pipeline anti-air bubble venting device.

[0006] This utility model is achieved through the following technical solution: a charging pile liquid cooling pipeline anti-bubble venting device, comprising a heat sink body; the heat sink body is disposed at the inner bottom of the charging pile housing, and a fan is disposed on one side of the heat sink body, and a liquid storage tank, an inlet / outlet pipeline valve block, and a circulation pump are disposed on the other side of the heat sink body; the liquid storage tank is connected to the circulation pump through a pipeline, the top of the inlet / outlet pipeline valve block is connected to the charging pile liquid cooling cavity through a pipeline, the bottom of the inlet / outlet pipeline valve block is connected to the circulation pump through liquid cooling system pipeline A, and is connected to the heat sink body through liquid cooling system pipeline B, and the height of the liquid storage tank is flush with the height of the inlet / outlet pipeline valve block; the heat sink body is connected to the liquid storage tank through a circulation pipeline, and an vent valve is disposed on the top of the liquid storage tank, and the vent valve is located at the highest position of the coolant circulation loop; a control box is disposed on the liquid storage tank, the control box is electrically connected to the circulation pump, and can control the start and stop of the circulation pump and monitor the coolant circulation status.

[0007] This device completely solves the problem of residual air bubbles in existing liquid cooling systems by designing the exhaust valve to be located at the highest position in the circuit and the liquid storage tank to be flush with the valve blocks of the inlet and outlet pipelines. This avoids liquid shortage alarms caused by air bubbles after the system is running, thus reducing the product failure rate. The monitoring function of the control box can detect circulation abnormalities in a timely manner, further improving system reliability and meeting the stable heat dissipation requirements of the charging gun under high current in supercharging scenarios.

[0008] A further improvement of this utility model is that a liquid level display hose is provided on the outside of the liquid storage tank, the liquid level display hose is connected to the inside of the liquid storage tank, and the liquid level display hose is made of transparent material.

[0009] A further improvement of this utility model is that a liquid cooling system fixing plate is provided at the bottom of the heat sink body, and the heat sink body is fixed to the inner bottom of the charging pile housing by the liquid cooling system fixing plate.

[0010] A further improvement of this utility model is that the liquid storage tank and the inlet / outlet pipeline valve block are both located on the top of the heat sink body, and the liquid storage tank is fixedly connected to the heat sink body through a connecting plate, and one end of the inlet / outlet pipeline valve block is fixedly connected to the heat sink body.

[0011] A further improvement of this utility model is that one end of the liquid cooling system pipe B is connected to the bottom of the inlet and outlet pipe valve block, and the other end of the liquid cooling system pipe B is connected to the bottom of the heat sink body.

[0012] A further improvement of this utility model is that the circulation pump is located at the bottom of the heat sink body corresponding to the liquid storage tank, and the circulation pump is fixed to the bottom of the heat sink body by a support frame.

[0013] A further improvement of this utility model is that the circulation pipeline is a U-shaped pipeline, and the two ends of the circulation pipeline are respectively connected to the top of the liquid storage tank and the top of the heat sink body.

[0014] A further improvement of this utility model is that a fan baffle is provided at the end of the fan away from the heat sink body.

[0015] A further improvement of this utility model is that a drain port is provided at the bottom of the heat sink body.

[0016] A further improvement of this utility model is that a liquid filling port is provided on the top of the liquid storage tank.

[0017] As can be seen from the above technical solutions, the beneficial effects of this utility model are: 1. This device, through the "no initial pressure exhaust valve + liquid storage tank flush with inlet and outlet pipeline valve blocks + exhaust at the highest position" design, allows air bubbles generated during coolant circulation to be discharged at any time, completely avoiding liquid shortage alarms caused by air accumulation in the pipeline, significantly reducing product failure rate, meeting the stable requirements of high current operation of the charging gun in supercharging scenarios, and ensuring long-term reliable operation of the system.

[0018] 2. This device eliminates air bubble retention in low-lying sections through a U-shaped circulation pipeline. Microchannel heat sinks combined with a fan with baffles enhance forced convection. Components are securely connected by fixing plates and support frames, which reduces coolant flow resistance, improves heat dissipation efficiency, and avoids pipe loosening and leakage caused by vibration. This further improves the system's sealing and heat dissipation stability, making it suitable for the high heat dissipation requirements of supercharging scenarios.

[0019] 3. This device enables visual monitoring of coolant balance via a liquid level display hose. The addition and drain ports simplify the replenishment and drainage operations. The control box monitors circulation parameters in real time and provides timely warnings of abnormalities, reducing maintenance time and manpower. It also avoids system failures caused by improper replenishment or residual old coolant, extending the device's lifespan and improving the user experience. Attached Figure Description

[0020] To more clearly illustrate the technical solution of this utility model, the drawings used in the description will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a structural schematic diagram of a specific embodiment of the present utility model.

[0022] Figure 2 This is a schematic diagram of the structure of the heat sink body, fan and fan partition in a specific embodiment of this utility model.

[0023] Figure 3 This is a schematic diagram of the structure of the heat sink body, the liquid storage tank and the connecting plate in a specific embodiment of this utility model.

[0024] In the diagram: 1. Heat sink body; 101. Drain port; 2. Fan; 201. Fan baffle; 3. Liquid storage tank; 301. Liquid level display hose; 302. Connecting plate; 303. Liquid filling port; 4. Inlet and outlet pipeline valve block; 5. Circulation pump; 501. Support frame; 6. Control box; 7. Liquid cooling system pipeline A; 8. Liquid cooling system pipeline B; 9. Circulation pipeline; 10. Exhaust valve; 11. Liquid cooling system mounting plate. Detailed Implementation

[0025] To make the objectives, features, and advantages of this utility model more apparent and understandable, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings of the specific embodiments. Obviously, the embodiments described below are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this patent, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this patent.

[0026] Now refer to Figures 1-3 The following is a description of a specific embodiment: The present invention provides a charging pile liquid cooling pipeline anti-bubble venting device, comprising a heat sink body 1; the heat sink body 1 is disposed at the inner bottom of the charging pile housing, and a fan 2 is disposed on one side of the heat sink body 1, while a liquid storage tank 3, an inlet / outlet pipeline valve block 4, and a circulation pump 5 are disposed on the other side of the heat sink body 1; the liquid storage tank 3 is connected to the circulation pump 5 via a pipeline, the top of the inlet / outlet pipeline valve block 4 is connected to the charging pile liquid cooling cavity via a pipeline, and the bottom of the inlet / outlet pipeline valve block 4 is connected to... The liquid cooling system pipe A7 is connected to the circulating pump 5, and the liquid cooling system pipe B8 is connected to the heat sink body 1. The height of the liquid storage tank 3 is flush with the height of the inlet and outlet pipe valve block 4. The heat sink body 1 is connected to the liquid storage tank 3 through the circulating pipe 9. The top of the liquid storage tank 3 is provided with an exhaust valve 10, which is located at the highest position of the coolant circulation loop. The liquid storage tank 3 is provided with a control box 6, which is electrically connected to the circulating pump 5 and can control the start and stop of the circulating pump 5 and monitor the coolant circulation status.

[0027] After the circulation pump 5 starts, it drives the coolant in the storage tank 3 to be transported to the inlet and outlet valve block 4 through the liquid cooling system pipeline A7. The coolant then enters the charging pile's liquid cooling chamber through the inlet and outlet valve block 4, thereby dissipating heat from the charging gun and carrying away heat from the gun head and cables. After absorbing heat, the coolant flows back from the charging pile's liquid cooling chamber to the inlet and outlet valve block 4, and then flows into the heat sink body 1 through the liquid cooling system pipeline B8. The fan 2 blows air onto the heat sink body 1, cooling the coolant through forced convection. The cooled coolant then flows back to the storage tank 3 through the circulation pipeline 9, forming a complete coolant circulation loop. During the process, the air bubbles generated by the coolant circulation, due to their lower density than the liquid, will naturally rise to the exhaust valve 10 located at the highest point of the coolant circulation loop and be discharged. At the same time, the storage tank 3 and the inlet and outlet valve block 4 are at the same height to avoid air bubble retention due to pipeline position differences. The control box 6 controls the start and stop of the circulation pump 5 in real time and monitors the coolant circulation status—such as pressure and flow rate.

[0028] This device completely solves the problem of residual air bubbles in existing liquid cooling systems by designing "the exhaust valve 10 is located at the highest position in the circuit + the liquid storage tank 3 is flush with the valve block 4 of the inlet and outlet pipelines". This avoids liquid shortage alarms caused by air bubbles after the system is running and reduces the product failure rate. The monitoring function of the control box 6 can detect circulation abnormalities in a timely manner, further improving the system reliability and meeting the stable heat dissipation requirements of the charging gun under the high current in the supercharging scenario.

[0029] Specifically, refer to Figure 1 The bottom of the heat sink body 1 is provided with a liquid cooling system fixing plate 11, and the heat sink body 1 is fixed to the inner bottom of the charging pile housing through the liquid cooling system fixing plate 11.

[0030] The heat sink body 1 is fixedly connected to the inner bottom of the charging pile housing through the liquid cooling system fixing plate 11 at the bottom. The liquid cooling system fixing plate 11 provides stable support for the heat sink body 1 and prevents the heat sink body 1 from shifting or shaking during the operation of the charging pile, such as fan vibration or slight external collision.

[0031] This device can effectively improve the installation stability of the heat sink body 1 through the liquid cooling system fixing plate 11, and prevent the displacement of the heat sink body 1 from causing the liquid cooling system pipes A7 and B8 connected to it to become loose or leak, thus ensuring the sealing of the coolant circulation loop; at the same time, it reduces the impact of vibration on the heat dissipation efficiency of the heat sink body 1, and indirectly improves the overall reliability of the liquid cooling system.

[0032] Specifically, refer to Figure 3The liquid storage tank 3 and the inlet / outlet pipe valve block 4 are both located on the top of the heat sink body 1. The liquid storage tank 3 is fixedly connected to the heat sink body 1 through the connecting plate 302. One end of the inlet / outlet pipe valve block 4 is fixedly connected to the heat sink body 1, and one end of the liquid cooling system pipe B8 is connected to the bottom of the inlet / outlet pipe valve block 4. The other end of the liquid cooling system pipe B8 is connected to the bottom of the heat sink body 1.

[0033] The liquid storage tank 3 is fixed to the top of the heat sink body 1 via the connecting plate 302. One end of the inlet and outlet pipe valve block 4 is fixed to the heat sink body 1 to ensure that the relative positions of the two with respect to the heat sink body 1 are fixed. The liquid cooling system pipe B8 connects the bottom of the inlet and outlet pipe valve block 4 to the bottom of the heat sink body 1, so that the returning coolant flows in from the bottom of the heat sink body 1, which can fully fill the internal flow channel of the heat sink and avoid the heat dissipation dead corner caused by the empty flow channel at the top of the heat sink.

[0034] The aforementioned top fixing method can optimize the structural layout of this device and reduce the space occupied inside the charging pile housing; the bottom connection design of the liquid cooling system pipe B8 ensures that the coolant flows fully through the heat sink body 1, improving heat dissipation efficiency; at the same time, the fixed connection avoids pipe bending caused by relative displacement of components, reduces the risk of air bubble retention, and further ensures smooth circulation.

[0035] Specifically, refer to Figure 1 The circulation pump 5 is located at the bottom of the heat sink body 1 corresponding to the liquid storage tank 3, and the circulation pump 5 is fixed to the bottom of the heat sink body 1 by a support frame 501.

[0036] The circulating pump 5 is fixed to the bottom of the heat sink body 1 at the position corresponding to the liquid storage tank 3 by the support frame 501, which shortens the pipeline distance between the circulating pump 5 and the liquid storage tank 3 and reduces the flow resistance of coolant from the liquid storage tank 3 into the circulating pump 5; the support frame 501 provides stable support for the circulating pump 5 and reduces the vibration amplitude of the circulating pump 5 during operation.

[0037] This device can reduce the flow resistance of coolant by shortening the pipeline distance, improve the delivery efficiency of the circulating pump 5, and reduce energy consumption; the fixing function of the support frame 501 can reduce the impact of the vibration of the circulating pump 5 on the surrounding pipelines, such as the liquid cooling system pipeline A7, avoid the pipeline interface loosening and leakage caused by vibration, and at the same time reduce vibration noise, improve the operational stability and quietness of this device.

[0038] Specifically, refer to Figure 1 The circulation pipe 9 is a U-shaped pipe, and the two ends of the circulation pipe 9 are respectively connected to the top of the liquid storage tank 3 and the top of the heat sink body 1.

[0039] The circulation pipe 9 is designed in a U-shape, with its two ends connected to the top of the liquid storage tank 3 and the top of the heat sink body 1, respectively. After cooling, the coolant flows smoothly from the top of the heat sink body 1 into the top of the liquid storage tank 3 through the U-shaped pipe. The U-shaped structure avoids low-lying sections in the pipe, preventing the coolant from stagnating in low-lying areas and generating bubbles. At the same time, the top-flow method can reduce the disturbance of the coolant to the liquid in the liquid storage tank 3 and avoid the generation of new bubbles.

[0040] This device, through its U-shaped pipe design, can completely eliminate the risk of air bubble retention in low-lying sections of the pipe, ensuring that the coolant circulates without dead zones throughout the entire process; top inflow reduces liquid disturbance and avoids the generation of new air bubbles, further enhancing the "anti-bubble" effect; at the same time, the stable liquid flow can reduce circulation noise and improve the stability of system operation.

[0041] Specifically, refer to Figure 2 A fan baffle 201 is provided at the end of the fan 2 away from the heat sink body 1. The fan baffle 201 can guide the airflow generated by the fan 2 to flow towards the heat sink body 1, avoid the airflow loss caused by the airflow spreading to the surrounding area, and allow more cold air to flow over the surface of the heat sink body 1, thereby improving the heat exchange efficiency.

[0042] This device, through the design of the fan baffle 201, can improve the airflow utilization rate of the fan 2, enhance the forced convection heat dissipation effect on the heat sink body 1, reduce the coolant temperature more quickly, and thus improve the heat dissipation capacity of the entire liquid cooling system to meet the heat dissipation requirements of the supercharger charging gun during high current operation; at the same time, it reduces the impact of airflow diffusion on other components inside the charging pile housing and avoids local temperature anomalies.

[0043] In one embodiment, reference Figure 1 The liquid storage tank 3 is provided with a liquid level display hose 301 on the outside. The liquid level display hose 301 is connected to the inside of the liquid storage tank 3 and is made of transparent material.

[0044] Changes in the coolant level in the reservoir 3 are synchronously transmitted to the level display hose 301 connected to it. Because the level display hose 301 is made of transparent material, staff can directly observe the level in the hose without disassembling the device to determine whether the coolant in the reservoir 3 is sufficient, so that coolant can be added in time through the filling structure when the level is insufficient.

[0045] This device enables visual monitoring of coolant level via the liquid level display hose 301, avoiding the cumbersome operation of traditional "disassembly to check liquid level" and reducing the difficulty and time cost of operation and maintenance. At the same time, it can accurately control the amount of coolant added, preventing insufficient heat dissipation due to insufficient coolant or abnormal system pressure due to excessive coolant, further improving the convenience and stability of system operation and maintenance.

[0046] In one embodiment, reference Figure 1The bottom of the heat sink body 1 is provided with a drain port 101, and the top of the liquid storage tank 3 is provided with a liquid filling port 303.

[0047] When coolant needs to be added, staff can directly inject coolant through the filling port 303 on the top of the reservoir 3, which is convenient. When coolant needs to be replaced or the system needs to be maintained, the drain port 101 at the bottom of the heat sink body 1 can be opened to completely drain the coolant in the heat sink body 1 and the connecting pipes, avoiding the residue of old coolant.

[0048] The design of the filler port 303 simplifies the coolant replenishment process and reduces maintenance difficulty. The design of the drain port 101 ensures complete discharge of coolant, preventing old coolant residue from affecting the heat dissipation performance of new coolant. It also facilitates system maintenance, such as pipeline cleaning, reduces system failures caused by coolant deterioration, further reduces maintenance costs, and extends the service life of the device.

[0049] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A charging pile liquid cooling pipeline anti-air bubble venting device, comprising a heat sink body (1), characterized in that, The heat sink body (1) is located at the bottom of the charging pile housing, and a fan (2) is provided on one side of the heat sink body (1). A liquid storage tank (3), an inlet / outlet pipe valve block (4), and a circulation pump (5) are provided on the other side of the heat sink body (1). The liquid storage tank (3) is connected to the circulation pump (5) through a pipe. The top of the inlet / outlet pipe valve block (4) is connected to the liquid cooling chamber of the charging pile through a pipe. The bottom of the inlet / outlet pipe valve block (4) is connected to the circulation pump (5) through the liquid cooling system pipe A (7), and through the liquid cooling system pipe A (7). Road B (8) is connected to the heat sink body (1), and the height of the liquid storage tank (3) is flush with the height of the inlet and outlet pipe valve block (4); the heat sink body (1) is connected to the liquid storage tank (3) through the circulation pipe (9), and the top of the liquid storage tank (3) is provided with an exhaust valve (10), and the exhaust valve (10) is located at the highest position of the coolant circulation loop; a control box (6) is provided on the liquid storage tank (3), and the control box (6) is electrically connected to the circulation pump (5), and can control the start and stop of the circulation pump (5) and monitor the coolant circulation status.

2. The anti-air bubble venting device for liquid-cooled pipelines of a charging pile according to claim 1, characterized in that, The liquid storage tank (3) is provided with a liquid level display hose (301) on the outside. The liquid level display hose (301) is connected to the inside of the liquid storage tank (3) and the liquid level display hose (301) is made of transparent material.

3. The anti-air bubble venting device for liquid-cooled pipelines of a charging pile according to claim 1, characterized in that, The bottom of the heat sink body (1) is provided with a liquid cooling system fixing plate (11), and the heat sink body (1) is fixed to the inner bottom of the charging pile housing by the liquid cooling system fixing plate (11).

4. The anti-air bubble venting device for liquid-cooled pipelines of a charging pile according to claim 1, characterized in that, The liquid storage tank (3) and the inlet and outlet pipeline valve block (4) are both located on the top of the heat sink body (1). The liquid storage tank (3) is fixedly connected to the heat sink body (1) through the connecting plate (302), and one end of the inlet and outlet pipeline valve block (4) is fixedly connected to the heat sink body (1).

5. The anti-air bubble venting device for liquid-cooled pipelines of a charging pile according to claim 4, characterized in that, One end of the liquid cooling system pipe B (8) is connected to the bottom of the inlet and outlet pipe valve block (4), and the other end of the liquid cooling system pipe B (8) is connected to the bottom of the heat sink body (1).

6. The anti-air bubble venting device for liquid-cooled pipelines of a charging pile according to claim 1, characterized in that, The circulating pump (5) is located at the bottom of the heat sink body (1) corresponding to the liquid storage tank (3), and the circulating pump (5) is fixed to the bottom of the heat sink body (1) by a support frame (501).

7. The anti-air bubble venting device for liquid-cooled pipelines of a charging pile according to claim 1, characterized in that, The circulation pipeline (9) is a U-shaped pipeline, and the two ends of the circulation pipeline (9) are respectively connected to the top of the liquid storage tank (3) and the top of the heat sink body (1).

8. The anti-air bubble venting device for liquid-cooled pipelines of a charging pile according to claim 1, characterized in that, The fan (2) is provided with a fan baffle (201) at the end away from the heat sink body (1).

9. The anti-air bubble venting device for liquid-cooled pipelines of a charging pile according to claim 1, characterized in that, The bottom of the heat sink body (1) is provided with a drain port (101).

10. The anti-air bubble venting device for liquid-cooled pipelines of a charging pile according to claim 1, characterized in that, The top of the liquid storage tank (3) is provided with a liquid filling port (303).

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