Liquid cooling device for supercharged stacks

Abstract

The application discloses a liquid cooling device for super charging pile, and relates to the technical field of charging pile cooling. The device comprises a cooling cavity formed by a cooling base and a bearing cover plate, the bottom of the bearing cover plate is provided with a plurality of heat dissipation fins, the top of the fins contacts a battery pack, the lower end of the fins extends into cooling liquid, flow holes are formed in the fins, and the flow holes of adjacent fins are staggered; a heat dissipation relay box containing a heat dissipation condenser pipe is arranged on one side of the cooling base, and the circulation of the cooling liquid is realized through a circulating water pump; a water distribution assembly is arranged on the side wall of the cooling base to ensure the uniform distribution of the cooling liquid; a negative pressure generating strip is arranged on the top of the bearing cover plate, a suction fan is arranged to suck the heat air flow between the battery pack out and send the heat air flow into a blowing pipe in the heat dissipation relay box, the heat air flow is cooled by water to form bubbles and generate water mist attached to the outer wall of the condenser pipe, and the bubbles and the water mist are evaporated and heat-absorbed by a heat dissipation fan assembly. Through the synergistic effect of the turbulent heat exchange, the uniform water distribution, the bubble atomization evaporation and the air cooling, the heat dissipation efficiency and the operation stability of the super charging pile are remarkably improved.

Description

Technical Field

[0001] This invention relates to the field of supercharger cooling technology, specifically to a liquid cooling device for superchargers. Background Technology

[0002] With the rapid development of the electric vehicle industry, superchargers, as a core component of fast-charging infrastructure, are continuously improving their power density and charging efficiency. However, the large amount of heat generated during high-power charging severely affects the stable operation and lifespan of the supercharger. Traditional air-cooling methods are no longer sufficient to meet the heat dissipation requirements of superchargers, and liquid cooling technology, due to its superior heat dissipation performance, is gradually becoming the mainstream solution.

[0003] In existing technologies, liquid cooling equipment typically employs a simple circulating cooling system where the coolant flows within cooling channels to remove heat. However, such equipment suffers from the following technical drawbacks: First, the contact area between the coolant and the heat dissipation components is limited, resulting in low heat exchange efficiency; second, laminar flow is easily formed during coolant flow, leading to insufficient heat exchange; third, the cooling system's heat dissipation capacity is limited, making it difficult to meet the heat dissipation requirements of superchargers under high-load conditions; and finally, existing liquid cooling equipment lacks effective cooling of the environment surrounding the supercharger, resulting in excessively high local temperatures. Therefore, we provide a liquid cooling device for superchargers. Summary of the Invention

[0004] The purpose of this invention is to provide a liquid cooling device for superchargers to solve the heat dissipation problem of superchargers during high-power charging, and to ensure the stable operation and long life of the supercharger.

[0005] The present invention can be achieved by the following technical solution: a liquid cooling device for a supercharger stack, including a cooling base and a heat dissipation relay box. The top of the cooling base is fixed with a support cover plate for supporting the battery pack. The cooling base is provided with a cooling cavity. A number of heat dissipation fins are evenly arranged side by side at the bottom of the support cover plate and the heat dissipation fins extend and are immersed in the coolant filling the cooling cavity. The heat dissipation relay box is set on one side of the cooling base. A continuous U-shaped heat dissipation condenser tube is fixed at a certain height inside the heat dissipation relay box. The heat dissipation condenser tube is connected to the cooling cavity through a circulating water pump and water pipes, forming a coolant flow loop. A negative pressure generating strip is installed at the top edge of the bearing cover. The negative pressure generating strip is connected to the exhaust fan, which extracts the hot airflow from the battery pack installation gap and delivers it to the heat dissipation relay box containing water. The water cools the airflow, and at the same time, the water vapor generated by the bubbles rising to the surface and bursting adheres to the outer wall of the heat dissipation condenser tube. Under the action of the active airflow, the evaporation is accelerated, forming an endothermic effect.

[0006] A further technical improvement of the present invention is that a water distribution assembly is fixedly installed on the side wall of the cooling base. The water distribution assembly includes a water distribution cavity, a water distribution plate, and water distribution holes. Coolant enters the water distribution cavity from the bottom inlet, then passes through the water passages opened on the water distribution plate, and then enters the cooling cavity through the water distribution holes on the side wall above the water distribution plate of the water distribution assembly housing.

[0007] A further technical improvement of the present invention is that: multiple air inlet narrow slots are provided on the side of the negative pressure generating strip near the battery pack, and the air inlet narrow slots correspond in position to the installation gap of the battery pack.

[0008] A further technical improvement of the present invention is that the gap between the liquid level in the heat dissipation relay box and the heat dissipation condenser tube is maintained within a set range, and the control of this gap is achieved by monitoring the liquid level height.

[0009] A further technical improvement of the present invention is that: the heat dissipation relay box is provided with an air distribution strip connected to the exhaust fan, the air distribution strip is connected to multiple air blowing pipes, and an air blowing hole is provided above the air blowing pipe. The heat dissipation condenser is located above the water surface, and the air blowing pipe is located below the water surface. The airflow escapes through the air blowing hole to form bubbles that float to the water surface and burst. The water mist after bursting adheres to the outer wall of the heat dissipation condenser.

[0010] A further technical improvement of the present invention is that the cooling fan group on the top of the heat dissipation relay box accelerates the airflow speed around the heat dissipation condenser tube.

[0011] A further technical improvement of the present invention is that the heat dissipation fins are made of aluminum or copper, and their tops penetrate the load-bearing cover plate and are in direct contact with the outer casing of the battery pack.

[0012] A further technical improvement of the present invention is that: flow holes are uniformly formed on the heat dissipation fins, and the positions of the flow holes on adjacent heat dissipation fins are staggered, thereby extending the flow path of the coolant and forming a turbulent flow effect.

[0013] Compared with the prior art, the present invention has the following beneficial effects: 1. This invention provides staggered flow holes on the heat dissipation fins, allowing the coolant to impact the next layer of heat dissipation fins after passing through one layer. This causes water flow turbulence and vibration of the lower end of the heat dissipation fins in the coolant, effectively extending the residence time of the coolant, enhancing the flow disturbance, and ensuring full contact between the coolant and the heat dissipation fins, thereby maximizing heat exchange efficiency. Compared with traditional designs, the heat exchange efficiency is greatly improved.

[0014] 2. Through the design of the water distribution component, the coolant enters the water distribution cavity from the bottom inlet of the water distribution component, passes through the water passages on the water distribution plate, and is evenly distributed into the cooling cavity, ensuring that the coolant is evenly distributed in the width direction, avoiding local overheating and improving the overall heat dissipation effect.

[0015] 3. This invention employs a composite heat dissipation method combining liquid cooling and air cooling: the coolant circulates to remove heat from the battery pack; the water in the heat dissipation relay box further reduces the coolant temperature through bubble cooling and evaporation heat absorption; the cooling fan assembly accelerates airflow and enhances the heat exchange efficiency between the cooling condenser tubes and the airflow. The synergistic effect of these multiple heat dissipation mechanisms significantly improves the overall heat dissipation capacity.

[0016] 4. This invention uses the negative pressure generating strip and the exhaust fan to continuously introduce external airflow into the battery pack installation gap to remove heat. At the same time, the airflow is cooled by the heat dissipation relay box and forms bubbles. The water mist generated by the bursting of the bubbles adheres to the surface of the heat dissipation condenser tube, and further reduces the temperature through evaporation and heat absorption, effectively improving the working environment of the charging pile and keeping the surrounding air temperature at a low level. Attached Figure Description

[0017] To facilitate understanding by those skilled in the art, the present invention will be further described below with reference to the accompanying drawings.

[0018] Figure 1 This is a schematic diagram of the overall external structure of the present invention; Figure 2 This is a schematic diagram showing the connection of the heat sink fins in the installation state of the present invention; Figure 3 This is a schematic diagram of the water distribution assembly connection of the present invention; Figure 4 This is a schematic diagram showing the connection between the air distribution strip and the air blowing pipe of the present invention; In the diagram: 1. Cooling base; 2. Support cover plate; 3. Battery pack; 4. Heat dissipation fins; 5. Flow hole; 6. Water distribution assembly; 7. Heat dissipation relay box; 8. Heat dissipation condenser pipe; 9. Circulating water pump; 10. Water supply pipe one; 11. Water supply pipe two; 12. Negative pressure generating strip; 13. Air distribution strip; 14. Air blowing pipe; 15. Air blowing hole; 16. Air extraction pipe; 17. Exhaust fan; 18. Heat dissipation fan assembly; 601. Water distribution cavity; 602. Water distribution plate; 603. Water distribution hole. Detailed Implementation

[0019] To further illustrate the technical means and effects of the present invention in achieving its intended purpose, the following detailed description of the specific implementation methods, structures, features, and effects of the present invention, in conjunction with the accompanying drawings and preferred embodiments, is provided.

[0020] Please see Figure 1-4 As shown, a liquid cooling device for a supercharger includes a cooling base 1, and a support cover 2 for supporting a battery pack 3 is fixed on the top of the cooling base 1. The support cover 2 and the cooling base 1 form a cooling cavity. The bottom of the support cover plate 2 is provided with several heat dissipation fins 4 arranged vertically side by side. The top of the heat dissipation fins 4 penetrates the support cover plate 2 and contacts the outer casing of the battery pack 3. The heat dissipation fins 4 are made of aluminum sheets or copper sheets with better thermal conductivity. The lower end of the heat dissipation fins 4 extends to the cooling cavity, which is filled with coolant. A number of flow holes 5 are evenly opened on the heat dissipation fins 4, and the flow holes 5 on adjacent heat dissipation fins 4 are staggered. So after the coolant passes through one layer of heat dissipation fins 4, the liquid impacts the next layer of heat dissipation fins 4, causing water flow to surge and the lower end of the heat dissipation fins 4 to vibrate in the coolant, which further accelerates the turbulent heat exchange process and makes the heat dissipation efficiency of the battery pack 3 higher. A heat dissipation relay box 7 is provided on one side of the cooling base 1. A continuous U-shaped heat dissipation condenser pipe 8 is horizontally fixed at a certain height inside the heat dissipation relay box 7. One end of the heat dissipation condenser pipe 8 is directly connected to the cooling cavity, and the other end of the heat dissipation condenser pipe 8 is connected to the cooling base 1 through a circulating water pump 9, a water supply pipe 10, and a water supply pipe 2 11. Under the pumping drive of the circulating water pump 9, the coolant circulates in the cooling cavity and the heat dissipation condenser pipe 8. To ensure the smooth flow of coolant into the cooling cavity during circulation, a water distribution assembly 6 is fixedly installed on the side wall of the cooling base 1. The water distribution assembly 6 includes a water distribution cavity 601, a water distribution plate 602, and water distribution holes 603. Coolant enters the water distribution cavity 601 from the bottom inlet of the water distribution assembly 6, then passes through the water passages on the water distribution plate 602, and then enters the cooling cavity through the water distribution holes 603 located on the side wall above the water distribution plate 602. This ensures that the coolant entering the cooling cavity is evenly distributed in the width direction.

[0021] A negative pressure generating strip 12 is provided on the top of the cover plate 2 on one side of the battery pack 3. The side of the negative pressure generating strip 12 away from the battery pack 3 is connected to the heat dissipation relay box 7 through a vent pipe and an exhaust fan 17. Multiple air inlet slots are provided on the side of the negative pressure generating strip 12 close to the battery pack 3, and the air inlet slots correspond to the installation gap of the battery pack 3 in position, so that external airflow can be continuously introduced into the installation gap of the battery pack 3 to remove heat. A strip 13 is fixed to the inner side wall of the bottom of the heat dissipation relay box 7. A plurality of air blowing pipes 14 are fixedly connected to one side of the strip 13. A plurality of air blowing holes 15 are evenly opened on the upper surface of the air blowing pipes 14. The other end of the exhaust fan 17 is connected to the strip 13, so that the airflow is introduced into the air blowing pipes 14 through the exhaust fan 17. Furthermore, the heat dissipation relay box 7 contains water of a certain depth, with the liquid level below the heat dissipation condenser tube 8 and the gap between them maintained within a set range. This gap is controlled by monitoring the liquid level. The airflow entering the air blowing pipe 14 escapes from the air blowing hole 15, forming bubbles in the water and cooling it down. The bubbles rise to the liquid surface and burst, forming mist droplets that adhere to the outer wall of the heat dissipation condenser tube 8. At the same time, a heat dissipation fan assembly 18 is fixedly installed on the top of the outer side of the heat dissipation relay box 7. The heat dissipation fan assembly 18 accelerates the airflow, making the heat exchange between the heat dissipation condenser tube 8 and the airflow more efficient. In addition, the airflow can also accelerate the evaporation of water on the outer wall of the heat dissipation condenser tube 8, further removing heat. The liquid added to the heat dissipation relay box 7 can also ensure that the water temperature is within a certain temperature range, and will not cause the water temperature to rise significantly due to the effect of hot airflow.

[0022] In use, the present invention employs a circulating water pump 9 to pump and drive the coolant to circulate in a closed loop. The coolant contacts the heat dissipation fins 4 in the cooling cavity to exchange heat and carries the heat to the heat dissipation condenser tube 8. The heat dissipation condenser tube 8 carries away a large amount of heat under the action of airflow and water evaporation, thus realizing the absorption of heat in the coolant. During the heat exchange process between the heat dissipation fins 4 and the coolant, the position of the flow holes 5 between adjacent heat dissipation fins 4 is staggered, which prolongs the residence time of the coolant and causes the coolant flow to be disturbed and agitated at the tail end of the heat dissipation fins 4, so that the flow of the coolant can fully interact with the heat dissipation fins 4 and maximize the heat exchange efficiency. Meanwhile, the exhaust fan 17 enables airflow in the gap area of ​​the battery pack 3 and removes heat. After cooling in the heat dissipation relay box 7, bubbles are formed. When the bubbles burst, water mist is generated and adheres to the surface of the heat dissipation condenser tube 8 so as to evaporate and absorb heat, thereby dissipating the heat of the coolant. At the same time, this heat dissipation combination also allows the air environment around the charging pile to circulate and the temperature to be kept at a low level, further improving the working environment of the charging pile.

[0023] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present invention. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the scope of the present invention.

Claims

1. A liquid-cooled cooling device for a supercharger, characterized in that, It includes a cooling base (1) and a heat dissipation relay box (7). The top of the cooling base (1) is fixed with a support cover plate (2) for supporting the battery pack (3). The cooling base (1) is provided with a cooling cavity. The bottom of the support cover plate (2) is provided with a number of heat dissipation fins (4) arranged side by side and evenly, and the heat dissipation fins (4) extend and are immersed in the coolant filling the cooling cavity. The heat dissipation relay box (7) is set on one side of the cooling base (1). A continuous U-shaped heat dissipation condenser pipe (8) is fixed at a certain height inside the heat dissipation relay box (7). The heat dissipation condenser pipe (8) is connected to the cooling cavity through the circulating water pump (9) and water pipe to form a coolant flow circuit. A negative pressure generating strip (12) is installed at the top edge of the bearing cover plate (2). The negative pressure generating strip (12) is connected to the exhaust fan (17), which extracts the hot airflow from the installation gap of the battery pack (3) and delivers it to the heat dissipation relay box (7) containing water. The water cools the airflow, and the water mist generated by the bubbles rising to the surface and breaking adheres to the outer wall of the heat dissipation condenser pipe (8). Under the action of the active airflow, the water evaporates faster and forms a heat absorption effect.

2. The liquid cooling device for a supercharger stack according to claim 1, characterized in that, The cooling base (1) is fixedly installed with a water distribution assembly (6). The water distribution assembly (6) includes a water distribution cavity (601), a water distribution plate (602), and a water distribution hole (603). The coolant enters the water distribution cavity (601) from the bottom inlet, and then enters the cooling cavity through the water passage hole opened on the water distribution plate (602) and the water distribution hole (603) on the side wall above the water distribution plate (602) of the housing of the water distribution assembly (6).

3. The liquid cooling device for a supercharger stack according to claim 1, characterized in that, The negative pressure generating strip (12) has multiple air inlet slots on the side near the battery pack (3), and the air inlet slots correspond in position to the installation gap of the battery pack (3).

4. A liquid cooling device for a supercharger stack according to claim 1, characterized in that, The gap between the liquid level in the heat dissipation relay box (7) and the heat dissipation condenser tube (8) is maintained within a set range, and the control of this gap is achieved by monitoring the liquid level height.

5. A liquid cooling device for a supercharger stack according to claim 1, characterized in that, The heat dissipation relay box (7) is equipped with a distribution strip (13) connected to the exhaust fan (17). The distribution strip (13) is connected to multiple air blowing pipes (14). Air blowing holes (15) are provided above the air blowing pipes (14). The heat dissipation condenser (8) is located above the water surface, and the air blowing pipes (14) are located below the water surface. The airflow escapes through the air blowing holes (15) to form bubbles that float to the water surface and burst. The water mist after bursting adheres to the outer wall of the heat dissipation condenser (8).

6. A liquid cooling device for a supercharger stack according to claim 1, characterized in that, The cooling fan assembly (18) on the top of the cooling relay box (7) accelerates the airflow speed around the cooling condenser tube (8).

7. A liquid cooling device for a supercharger stack according to claim 1, characterized in that, The heat dissipation fins (4) are made of aluminum or copper, and their tops penetrate the bearing cover (2) and are in direct contact with the outer casing of the battery pack (3).

8. A liquid cooling device for a supercharger according to claim 1, characterized in that, The heat dissipation fins (4) are uniformly provided with flow holes (5), and the flow holes (5) on adjacent heat dissipation fins (4) are staggered to extend the flow path of the coolant and form a turbulent flow effect.

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