Efficient heat dissipation air duct structure of new energy automobile heat management system

Abstract

The utility model discloses an efficient heat dissipation air duct structure of a new energy automobile heat management system. The efficient heat dissipation air duct structure comprises an air inlet channel, a flow guide channel, a flow division heat dissipation channel and an air outlet channel. A cold water box is installed on one side of the shunting heat dissipation channel, a refrigeration sheet is installed on the outer wall of the cold water box and attached to the outer wall of the cold water box, and a fan is installed on the side, away from the cold water box, of the refrigeration sheet; a water-cooling heat dissipation cavity is formed in the inner wall of the flow dividing heat dissipation channel, and the water-cooling heat dissipation cavity communicates with an inner cavity of the cold water box. The cooling fins, the fan and the water-cooling heat dissipation cavity are arranged, the cooling fins are matched with the fan, cooling treatment of water in the cold water box is achieved, cooled cooling water circularly flows between the cold water box and the water-cooling heat dissipation cavity, and therefore active cooling treatment of the flow dividing heat dissipation channel is achieved; even if the external environment temperature is high in summer and the like, the heat dissipation effect of the heat dissipation channel can still be guaranteed, and therefore the heat loss of the heat dissipation air channel structure is reduced.

Description

Technical Field

[0001] This utility model relates to the technical field of thermal management systems for new energy vehicles, specifically to a high-efficiency heat dissipation air duct structure for a thermal management system for new energy vehicles. Background Technology

[0002] The thermal management system of a new energy vehicle is responsible for removing heat generated by components such as the battery, motor, and electronic control system in a timely manner, ensuring that these components operate at suitable temperatures, thereby improving vehicle performance, safety, and lifespan. The cooling duct structure, through a rational airflow design, uses components such as heat sinks and heat exchange pipes to guide airflow, carrying heat away from components such as the battery and motor and dissipating it to the external environment of the vehicle, thus ensuring the stable operation of the entire vehicle.

[0003] There is some research on the heat dissipation duct structure of the thermal management system of new energy vehicles in the prior art. See the patent document with application number 202020632345.X, which discloses a cooling device for a new energy vehicle duct, including a battery box. A heat-conducting plate is installed at the bottom of the inner wall of the battery box, and a cooling box is fixed at the bottom of the battery box. An air duct is fixed at the bottom of the battery box inside the cooling box. A first heat sink penetrating into the interior of the cooling box is connected to the bottom of the heat-conducting plate, and a second heat sink penetrating into the air duct is connected to the bottom of the heat-conducting plate inside the first heat sink.

[0004] Therefore, it can be seen that during vehicle operation, heat is transferred to heat sinks one and two via the heat-conducting plate. The combined action of heat sinks one and two removes heat from the battery compartment. However, the cooling duct structure only utilizes heat-conducting components such as heat sinks within the duct for passive cooling. In high ambient temperatures, such as during summer, the cooling efficiency and effectiveness of the duct are poor, leading to significant heat loss within the cooling structure itself. Utility Model Content

[0005] To address the technical problem in the prior art where heat dissipation duct structures rely solely on heat-conducting components such as heat sinks within the duct for passive heat dissipation, resulting in poor heat dissipation efficiency and effectiveness under high ambient temperatures, such as in summer, leading to severe heat loss of the heat dissipation structure itself, this utility model provides a high-efficiency heat dissipation duct structure for a thermal management system of new energy vehicles.

[0006] A high-efficiency heat dissipation duct structure for a thermal management system of a new energy vehicle includes an air inlet channel, a guide channel, a diversion heat dissipation channel, and an air outlet channel. A guide channel is provided at one end of the air inlet channel, a diversion heat dissipation channel is provided at the end of the guide channel away from the air inlet channel, and an air outlet channel is provided at the end of the diversion heat dissipation channel away from the guide channel. A cold water box is installed on one side of the diversion heat dissipation channel, and a cooling fin is installed on the outer wall of the cold water box, the cooling fin being in contact with the outer wall of the cold water box. A fan is installed on the side of the cooling fin away from the cold water box. A water-cooled heat dissipation cavity is provided on the inner wall of the diversion heat dissipation channel, and the water-cooled heat dissipation cavity is connected to the inner cavity of the cold water box.

[0007] Preferably, multiple heat dissipation channels are provided, and the multiple heat dissipation channels are radially distributed along the guide channel; adjacent water-cooled heat dissipation cavities are connected by a first connecting pipe.

[0008] Preferably, the inner cavity of the diversion heat dissipation channel is provided with a first main heat exchange pipe and a second main heat exchange pipe; the first main heat exchange pipe and the second main heat exchange pipe are connected by a heat exchange pipe, and a second connecting pipe is provided between the first main heat exchange pipe and the flow guide channel and between the second main heat exchange pipe and the air outlet channel.

[0009] Preferably, the outer contour of the flow channel is arc-shaped.

[0010] Preferably, a protective filter plate is installed inside the air inlet channel, and a filter screen is provided on the protective filter plate.

[0011] Preferably, the protective filter plate is engaged with the air inlet channel via positioning pins.

[0012] Preferably, the air outlet channel is configured as a diffuser structure.

[0013] Preferably, the outer walls of the air inlet channel, the air guide channel, the heat dissipation channel, the air outlet channel, the first connecting pipe, and the second connecting pipe are all wrapped with sound insulation felt.

[0014] Preferably, the water-cooled heat dissipation cavity is connected to the inner cavity of the cold water box via a liquid guiding hose.

[0015] Preferably, the two ends of the liquid guiding hose are connected to the inner cavities of the water-cooled heat dissipation cavity and the cold water box respectively through threaded assembly pipes.

[0016] In summary, this utility model has the following beneficial technical effects:

[0017] (1) The high-efficiency heat dissipation duct structure of the new energy vehicle thermal management system of this utility model is equipped with a cooling plate, a fan and a water-cooled heat dissipation cavity. When the air body is cooled at the split heat dissipation channel, the cooling surface of the cooling plate cooperates with the fan to achieve the cooling treatment of the water inside the cold water box. The cooled water circulates between the cold water box and the water-cooled heat dissipation cavity, thereby achieving active cooling treatment of the split heat dissipation channel. Even in summer and other conditions with high external ambient temperature, the heat dissipation effect of the heat dissipation channel can still be guaranteed, thereby reducing the heat loss of the heat dissipation duct structure itself.

[0018] (2) The high-efficiency heat dissipation duct structure of the new energy vehicle thermal management system of this utility model is provided with multiple diversion heat dissipation channels, and the multiple diversion heat dissipation channels are radially distributed along the guide channel, which facilitates the dispersion of the heat of the air body to multiple diversion heat dissipation channels. The heat dissipation load borne by each diversion heat dissipation channel is reduced, thereby improving the overall heat dissipation efficiency of the heat dissipation duct structure and further improving the reliability of the heat dissipation duct structure in high temperature environment. Attached Figure Description

[0019] Figure 1 This is a top view of the structure of this utility model;

[0020] Figure 2 This is a top view of the cold water box structure of this utility model;

[0021] Figure 3 This is a partial cross-sectional view of the heat dissipation channel of this utility model.

[0022] Figure 4 This is a partial sectional view of the air inlet channel of this utility model.

[0023] Figure 5 This is a front view structural diagram of the present invention;

[0024] In the diagram: 1. Air inlet channel; 2. Air guide channel; 3. Diverting heat dissipation channel; 4. Cold water box; 5. Air outlet channel; 6. First connecting pipe; 7. First main heat exchanger fitting; 8. Second main heat exchanger fitting; 9. Heat exchanger tube; 10. Second connecting pipe; 11. Water-cooled heat dissipation cavity; 12. Positioning pin; 13. Filter screen; 14. Protective filter plate; 15. Cooling element; 16. Fan; 17. Solenoid valve; 18. Water pump; 19. Liquid guiding hose; 20. Threaded assembly pipe. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0026] Reference Figures 1-3 This utility model provides an embodiment of a high-efficiency heat dissipation duct structure for a thermal management system of a new energy vehicle, including an air inlet channel 1, a guide channel 2, a diversion heat dissipation channel 3, and an air outlet channel 5. One end of the air inlet channel 1 is provided with the guide channel 2, the end of the guide channel 2 away from the air inlet channel 1 is provided with the diversion heat dissipation channel 3, and the end of the diversion heat dissipation channel 3 away from the guide channel 2 is provided with the air outlet channel 5. A cold water box 4 is installed on one side of the diversion heat dissipation channel 3, and a cooling fin 15 is installed on the outer wall of the cold water box 4. The cooling fin 15 is in contact with the outer wall of the cold water box 4, and a fan 16 is installed on the side of the cooling fin 15 away from the cold water box 4. A water-cooled heat dissipation cavity 11 is provided on the inner wall of the diversion heat dissipation channel 3, and the water-cooled heat dissipation cavity 11 is connected to the inner cavity of the cold water box 4 but not connected to the inner cavity of the diversion heat dissipation channel 3.

[0027] Specifically, the heat dissipation duct structure provided by this utility model is suitable for heat dissipation of battery packs in new energy vehicles. The heat dissipation duct structure is installed at the bottom of the vehicle, the bottom of the seat, or the side of the vehicle. Operators can set it up according to the actual structure of the vehicle.

[0028] More specifically, in this embodiment, the cooling chip 15 is a semiconductor cooling chip, which can cool quickly and is easy to install.

[0029] Furthermore, the outer contour of the guide channel 2 can be set to an arc shape, V shape, streamline shape, etc. By setting a suitable outer contour shape of the guide channel 2, the guide channel 2 can guide the flow path of the air body. Preferably, the outer contour of the guide channel 2 is set to an arc shape. During the vehicle's movement, the air body entering from the air intake channel 1 passes through the arc-shaped guide channel. The arc-shaped guide channel guides the flow path of the air body, thereby reducing wind resistance, increasing air intake volume, and improving heat dissipation efficiency.

[0030] Reference Figure 1 and Figure 3 Multiple heat dissipation channels 3 are provided, and these channels 3 are arranged at equal intervals along the radial direction of the guide channel 2. Adjacent water-cooled heat dissipation chambers 11 are connected by a first connecting pipe 6. By providing multiple heat dissipation channels 3, heat is distributed among them, reducing the heat dissipation load on each channel 3, improving the overall heat dissipation efficiency of the heat dissipation duct structure, and further enhancing the reliability of the heat dissipation duct structure in high-temperature environments.

[0031] Specifically, the heat dissipation channel 3 can be set to one, two, or three. Setting an appropriate number of heat dissipation channels 3 allows the cooling water to continuously circulate between the cold water box 4 and the water-cooled heat dissipation cavity 11 in the heat dissipation channel 3, thereby achieving rapid cooling of the cooling water. Preferably, the heat dissipation channel 3 is set to three, and the three heat dissipation channels 3 are arranged at equal intervals at one end of the guide channel 2.

[0032] Reference Figure 1 and Figure 3 The inner cavity of the heat dissipation channel 3 is provided with a first main heat exchange pipe 7 and a second main heat exchange pipe 8; the first main heat exchange pipe 7 and the second main heat exchange pipe 8 are connected by a heat exchange pipe 9, and a second connecting pipe 10 is provided between the first main heat exchange pipe 7 and the flow channel 2 and between the second main heat exchange pipe 8 and the air outlet channel 5.

[0033] Specifically, the heat exchange tubes 9 are evenly distributed within the inner cavity of the distribution heat dissipation channel 3 to ensure uniform distribution of cooling water within the channel 3, reducing local overheating or overcooling. The heat exchange tubes 9 are designed as threaded tubes, increasing the contact area and contact time between the cooling water and the tube wall, thereby enhancing the heat exchange effect and improving heat exchange efficiency.

[0034] Reference Figure 4 The air inlet duct 1 is equipped with a protective filter plate 14, and a filter screen 13 is installed on the protective filter plate 14. The filter screen 13 provides good filtration and anti-clogging protection for the air inlet area.

[0035] Specifically, filter screen 13 is made of polytetrafluoroethylene (PTFE). PTFE filter screen has good chemical corrosion resistance and is suitable for filtration of coolant in the field of new energy vehicles, with a long service life.

[0036] More specifically, the protective filter plate 14 is connected to the air inlet channel 1 via positioning pins 12. The positioning pins 12 and the air inlet channel 1 are connected by screws, and the positioning pins 12 and the protective filter plate 14 are engaged to lock and fix the position of the protective filter plate 14, facilitating independent assembly and disassembly of the protective filter plate 14. The cross-sectional shape of the protective filter plate 14 matches the cross-sectional shape of the inner cavity of the air inlet channel 1.

[0037] Reference Figure 5 The air outlet duct 5 is designed with a diffuser structure. The cross-sectional area of ​​the air outlet duct 5 gradually increases, causing the airflow speed to gradually decrease as it passes through the outlet, thereby reducing wind noise.

[0038] Reference Figure 1 , Figure 3 as well as Figure 5The outer walls of the air inlet channel 1, the air guide channel 2, the heat dissipation channel 3, the air outlet channel 5, the first connecting pipe 6, and the second connecting pipe 10 are all wrapped with sound insulation felt to further optimize the sound insulation effect of the heat dissipation air duct structure.

[0039] Reference Figure 2 and Figure 3 The water-cooled heat dissipation cavity 11 is connected to the inner cavity of the cold water box 4 through the liquid guiding hose 19.

[0040] Specifically, a solenoid valve 17 and a water pump 18 are connected to the side of the cold water box 4 away from the cooling element 15. The solenoid valve 17 is connected to the water-cooled heat dissipation cavity 11 via a liquid guide hose 19, and the water pump 18 is also connected to the water-cooled heat dissipation cavity 11 via a liquid guide hose 19. By opening the solenoid valve 17 and the water pump 18, cooling water is transferred via the liquid guide hose 19. The cooled water circulates continuously between the cold water box 4 and the water-cooled heat dissipation cavity 11 of the three distribution heat dissipation channels 3, thereby cooling the distribution heat dissipation channels 3. In this embodiment, the solenoid valve 17 and the water pump 18 facilitate the circulation of cooling water between the cold water box 4 and the distribution heat dissipation channels 3.

[0041] Furthermore, the two ends of the liquid guiding hose 19 are connected to the inner cavities of the water-cooled heat dissipation cavity 11 and the cold water box 4 respectively through threaded assembly pipes 20. The threaded assembly pipes 20, the solenoid valve 17 and the water pump 18 are all connected to the diversion heat dissipation channel 3 through the threaded assembly pipes 20 to form a detachable structure, which facilitates subsequent disassembly and assembly operations.

[0042] Reference Figure 3 The first main heat exchange tube 7, the second main heat exchange tube 8, and the threaded heat exchange tube 9 are all made of graphene, which further improves the thermal conductivity and heat dissipation performance of the first main heat exchange tube 7, the second main heat exchange tube 8, and the threaded heat exchange tube 9.

[0043] In this embodiment of the application, the air introduced from the air inlet channel 1 enters the heat dissipation channel 3 after passing through the guide channel 2, and then the air is discharged through the air outlet channel 5.

[0044] When the airflow is cooled at the distribution heat dissipation channel 3, the cooling chip 15 is energized. The cooling surface of the cooling chip 15 cools the water inside the cold water box 4. Simultaneously, in conjunction with the cooling effect of the fan 16, active cooling of the water inside the cold water box 4 is achieved. The solenoid valve 17 and the water pump 18 are turned on, and the cooled water delivered through the liquid guide hose 19 circulates continuously between the cold water box 4 and the water-cooled heat dissipation cavity 11, thereby cooling the distribution heat dissipation channel 3. The distribution heat dissipation channel 3 utilizes a water-cooled structure for cooling. At this time, the low-temperature environment inside the distribution heat dissipation channel 3 allows the airflow passing through the first main heat exchange pipe 7, the second main heat exchange pipe 8, and the threaded heat exchange pipe 9 to undergo efficient heat conduction, thereby achieving rapid and effective cooling of the distribution heat dissipation channel 3 and improving the heat dissipation effect and efficiency of the heat dissipation duct structure. The heat dissipation duct structure of this utility model has strong applicability and can be used in situations with high external ambient temperatures, such as summer. In addition, by adjusting the current through the cooling chip 15, the degree of cooling can be precisely adjusted, thereby improving the accuracy of temperature regulation within the heat dissipation channel 3.

[0045] Obviously, the embodiments described above 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 should fall within the protection scope of this utility model.

[0046] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0047] It should be noted that the terms "first," "second," etc., used in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in sequences other than those illustrated or described herein.

[0048] The above are merely preferred embodiments of this utility model and are not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A high-efficiency heat dissipation air duct structure for a thermal management system of a new energy vehicle, characterized in that: It comprises an air inlet channel (1), a flow guide channel (2), a shunt heat dissipation channel (3) and an air outlet channel (5). One end of the air inlet channel (1) is provided with the flow guide channel (2), one end of the flow guide channel (2) away from the air inlet channel (1) is provided with the shunt heat dissipation channel (3), and one end of the shunt heat dissipation channel (3) away from the flow guide channel (2) is provided with the air outlet channel (5). One side of the shunt heat dissipation channel (3) is provided with a cold water box (4), the outer wall of the cold water box (4) is provided with a refrigeration fin (15), the refrigeration fin (15) is attached to the outer wall of the cold water box (4), and the side of the refrigeration fin (15) away from the cold water box (4) is provided with a fan (16). The inner wall of the shunt heat dissipation channel (3) is provided with a water-cooled heat dissipation cavity (11), and the water-cooled heat dissipation cavity (11) is in communication with the inner cavity of the cold water box (4).

2. The high-efficiency heat dissipation air duct structure of the new energy vehicle thermal management system according to claim 1, characterized in that: The shunt heat dissipation channel (3) is provided with a plurality of shunt heat dissipation channels (3) distributed along the radial direction of the flow guide channel (2). The first connecting pipe (6) is arranged between the two adjacent water-cooled heat dissipation cavities (11).

3. The high-efficiency heat dissipation air duct structure of a new energy vehicle thermal management system according to claim 2, characterized in that: The inner cavity of the shunt heat dissipation channel (3) is provided with a first main heat exchange pipe (7) and a second main heat exchange pipe (8). The first main heat exchange pipe (7) and the second main heat exchange pipe (8) are in communication through the heat exchange pipe (9), and the first main heat exchange pipe (7) and the second main heat exchange pipe (8) are provided with the second connecting pipe (10) between the flow guide channel (2) and the air outlet channel (5).

4. The high-efficiency heat dissipation air duct structure of the new energy vehicle thermal management system according to claim 1, characterized in that: The outer contour of the flow guide channel (2) is arc-shaped.

5. The high-efficiency heat dissipation air duct structure of the new energy vehicle thermal management system according to claim 1, characterized in that: The air inlet channel (1) is provided with a protective filter plate (14), and the protective filter plate (14) is provided with a filter screen (13).

6. The high-efficiency heat dissipation air duct structure of the new energy vehicle thermal management system according to claim 5, characterized in that: The protective filter plate (14) is connected with the air inlet channel (1) through the positioning clamping column (12).

7. The high-efficiency heat dissipation air duct structure of a new energy vehicle thermal management system according to claim 1, characterized in that: The air outlet channel (5) is provided with a diffusion structure.

8. The high-efficiency heat dissipation air duct structure of a new energy vehicle thermal management system according to claim 3, characterized in that: The outer walls of the air inlet channel (1), the flow guide channel (2), the shunt heat dissipation channel (3), the air outlet channel (5), the first connecting pipe (6) and the second connecting pipe (10) are wrapped with soundproof felt.

9. The high-efficiency heat dissipation air duct structure of a new energy vehicle thermal management system according to claim 1, characterized in that: The water-cooled heat dissipation cavity (11) is in communication with the inner cavity of the cold water box (4) through the liquid guide hose (19). 10.The high-efficiency heat dissipation air duct structure of a new energy vehicle thermal management system according to claim 9, characterized in that: The two ends of the liquid guide hose (19) are respectively in communication with the inner cavities of the water-cooled heat dissipation cavity (11) and the cold water box (4) through the threaded fitting pipe (20).

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