Integrated anti-vibration radiator and fuel cell heat dissipation system

Abstract

The application relates to a heat dissipation technology field of a fuel cell, in particular to a heat radiator integrated with anti-vibration and a fuel cell heat dissipation system. The heat radiator integrated with anti-vibration comprises a shell, a fan arranged in the shell and a heat exchanger arranged at the side of the shell. The heat radiator integrated with anti-vibration further comprises two opposite vertical arms arranged in the shell, and a plurality of guide vanes corresponding to the gaps between two adjacent fins of the heat exchanger are rotatably arranged between the two vertical arms. The inclined guide vanes can change the flow direction of the airflow, so that the airflow can directly impact the wall surface of the fin, thereby effectively destroying the airflow layer wrapped on the fin due to vibration. When the vibration intensity increases, the swing amplitude of the guide vanes increases, so that the stripping effect of the airflow on the low-speed airflow layer attached to the wall surface of the fin is more intense. The stripping effect of the airflow layer automatically matches the current vibration condition, the speed regulation mechanism increases the rotating speed of the fan, compensates for the additional wind resistance loss, and ensures that the convective heat exchange efficiency is maintained under different intensity vibration working conditions.

Description

Technical Field

[0001] This invention relates to the field of fuel cell heat dissipation technology, specifically to an integrated shock-resistant radiator and fuel cell heat dissipation system. Background Technology

[0002] During operation, the electrochemical reaction inside the fuel cell stack generates a large amount of heat. In order to keep the fuel cell in a suitable operating temperature range, a heat sink must be installed for thermal management. A common fuel cell heat sink structure includes a heat exchanger core and a fan located on one side of the heat exchanger. The heat exchanger core is usually composed of multiple parallel and equidistant fins. When the fan is running, it forces air to flow through the gaps between the fins, and carries away the heat conducted by the fins through convection heat transfer.

[0003] However, in practical vehicle applications, fuel cells are installed on vehicles, and the continuous mechanical vibrations during vehicle operation cause periodic relative displacement between the fins and the surrounding air. This prevents the air near the fin wall from flowing smoothly along the wall. The airflow that should have been rushing past the wall becomes sluggish under repeated disturbances, resulting in a layer of poorly flowing air near the wall. This layer accumulates and thickens, enveloping the fin wall and hindering heat transfer between the fins and the mainstream air. In addition, vibration can easily induce local secondary eddies or lateral migration of air near the fin wall. These eddies may re-entrain hot air that has moved away from the fins and already carries heat, mixing it with the recently cooled cold air. This prevents an effective temperature difference from being established on the fin surface, leading to a decrease in the fins' heat dissipation capacity and adversely affecting the performance of the fuel cell. Summary of the Invention

[0004] The purpose of this invention is to provide an integrated shock-resistant radiator and fuel cell cooling system to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: An integrated shock-resistant radiator includes a housing, a fan disposed within the housing, and a heat exchanger disposed on the side of the housing, and further includes: Two opposing vertical arms are located inside the shell, and multiple guide vanes corresponding to the gaps between two adjacent fins on the heat exchanger are rotatably installed between the two vertical arms. Two reciprocating plates are installed inside the housing. The reciprocating plates can be driven by a power mechanism installed inside the housing to move up and down repeatedly, and multiple guide vanes can be made to swing back and forth through a transmission mechanism. The drive plate is slidably fitted with the reciprocating plate. The drive plate is connected to the swing amplitude switching mechanism and the speed regulation mechanism. The swing amplitude switching mechanism communicates with the vibration detection sensor installed on the housing. It can drive the drive plate to move the reciprocating plate toward or away from the fan to change the swing amplitude of the guide vane. When the swing amplitude of the guide vane increases, the drive plate can trigger the speed regulation mechanism to increase the fan speed.

[0006] The integrated shock-resistant radiator as described above: the transmission mechanism includes a transmission arm connected to the rotating shaft of the guide vane and a roller provided on the reciprocating plate. The transmission arm is provided with a groove adapted to the roller along its own length direction, and the roller rolls and fits into the groove.

[0007] As described above, the integrated shock-resistant radiator has the following features: the swing amplitude switching mechanism is used to drive the roller to roll in the groove when the guide vane is parallel to the fin, so as to change the distance between the roller and the rotation axis of the guide vane.

[0008] As described above, the integrated shock-resistant radiator has two crossbars connected to the side of the reciprocating plate. The power mechanism includes a second electric cylinder installed inside the housing and a connecting block located at the movable end of the second electric cylinder. The two crossbars pass through the connecting block and are slidably connected to the connecting block.

[0009] The integrated shock-resistant radiator as described above: the swing switching mechanism includes a track disposed within the housing, a slider slidably fitted onto the track and connected to the drive plate, and a first electric cylinder installed within the housing with its movable end connected to the slider.

[0010] The integrated shock-resistant radiator as described above: the speed control mechanism includes a speed controller installed in the housing, the speed controller is provided with a speed control knob for changing the speed of the fan, the speed control knob is connected to a speed control execution structure, and the speed control execution structure is connected to the drive board through a follower structure.

[0011] The integrated shock-resistant radiator as described above: the speed control mechanism includes a gear connected to the speed control knob and a gear plate meshing with the gear. The housing also includes a guide block, which is slidably connected to the gear plate through a slot located on the side of the gear plate.

[0012] The integrated shock-resistant radiator as described above: the drive plate is provided with a guide rail, and the follower structure includes a driven plate that is slidably fitted on the guide rail, with a first column and a second column respectively provided at both ends of the driven plate; The housing is provided with a limiting plate. The first column passes through the inclined groove on the limiting plate and is slidably connected to the limiting plate. The toothed plate is connected to a cross arm. The second column extends into the strip groove on the cross arm and is slidably connected to the cross arm.

[0013] A fuel cell cooling system includes the aforementioned integrated shock-resistant radiator.

[0014] Compared with the prior art, the beneficial effects of the present invention are: When the vibration detection sensor detects a large vibration intensity, the guide vane swings back and forth. The tilted guide vane can change the direction of airflow, allowing the airflow to directly impact the fin wall, thereby effectively breaking the non-flowing air layer on the fin caused by vibration, avoiding the obstruction of heat transfer between the fin and the mainstream air, and at the same time enabling an effective temperature difference to be established on the fin surface, improving heat dissipation capacity and ensuring the working performance of the fuel cell under vibration conditions. When the vibration intensity increases, the swing amplitude switching mechanism can adjust the distance between the roller and the rotating shaft of the guide vane to increase the swing amplitude of the guide vane. The larger the swing amplitude of the guide vane, the greater its deflection angle to the airflow direction, and the greater the tilt angle when the airflow enters the fin gap. This significantly increases the component of the airflow velocity vector perpendicular to the fin wall. The larger the vertical component, the stronger the momentum of the airflow impacting the fin wall, and the more intense the stripping effect on the low-speed air layer attached to the fin wall, so that the stripping effect of the air layer is automatically matched with the current vibration condition. As the oscillation amplitude of the guide vanes increases, the speed regulation mechanism increases the fan speed, thereby increasing the total airflow through the fin gaps. This compensates for the additional wind resistance loss caused by the large oscillation of the guide vanes. Furthermore, the higher airflow velocity combined with the guiding effect of the guide vanes further increases the airflow velocity and disturbance intensity that scours the fin wall, ensuring the maintenance of convective heat transfer efficiency under different vibration conditions. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of one embodiment of an integrated shock-resistant radiator.

[0016] Figure 2 An exploded view of one embodiment of an integrated shock-resistant radiator.

[0017] Figure 3 for Figure 2 Enlarged view of the structure at point A in the middle.

[0018] Figure 4 This is a schematic diagram showing the distribution of multiple air guide fins in one embodiment of an integrated shock-resistant radiator.

[0019] Figure 5An exploded view of the speed control mechanism in one embodiment of an integrated shock-resistant radiator.

[0020] Figure 6 for Figure 5 A structural diagram from another angle.

[0021] In the diagram: 1. Shell; 2. Fan; 3. Heat exchanger; 301. Fin; 4. Vibration sensor; 5. Vertical arm; 6. Guide vane; 7. Transmission arm; 701. Slide groove; 8. Reciprocating plate; 801. Roller; 9. Drive plate; 901. Guide rail; 10. First electric cylinder; 11. Track; 12. Slider; 13. Speed ​​controller; 14. Gear; 15. Gear plate; 1501. Slot; 16. Guide block; 17. Cross arm; 1701. Strip groove; 18. Driven plate; 19. First column; 20. Second column; 21. Limiting plate; 2101. Inclined groove; 22. Second electric cylinder; 23. Connecting block; 24. Crossbar. Detailed Implementation

[0022] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. 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 skilled in the art without creative effort are within the scope of protection of the present invention.

[0023] Furthermore, elements in this invention are referred to as being "fixed to" or "set on" another element, which may be directly on the other element or may also include an intervening element. When an element is considered to be "connected" to another element, it may be directly connected to the other element or may also include an intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementations.

[0024] Please see Figures 1-6 In this embodiment, an integrated shock-resistant radiator includes a housing 1, a fan 2 disposed within the housing 1, and a heat exchanger 3 disposed on the side of the housing 1, and further includes: Two opposing vertical arms 5 are located inside the housing 1, and multiple guide vanes 6 are rotatably installed between the two vertical arms 5, each corresponding to the gap between two adjacent fins 301 on the heat exchanger 3. Two reciprocating plates 8 are installed inside the housing 1. The reciprocating plates 8 can be driven by a power mechanism installed inside the housing 1 to reciprocate and rise and fall, and through a transmission mechanism, multiple guide vanes 6 are made to swing back and forth. The drive plate 9 is slidably fitted with the reciprocating plate 8. The drive plate 9 is connected to the swing amplitude switching mechanism and the speed regulation mechanism. The swing amplitude switching mechanism communicates with the vibration detection sensor 4 installed on the housing 1. It can drive the drive plate 9 to move the reciprocating plate 8 toward or away from the fan 2 to change the swing amplitude of the guide vane 6. When the swing amplitude of the guide vane 6 increases, the drive plate 9 can trigger the speed regulation mechanism to increase the speed of the fan 2.

[0025] In this embodiment, it should be explained in detail that the multiple fins 301 and the multiple guide vanes 6 are staggered, that is, the guide vanes 6 correspond to the spacing between two adjacent fins 301. The vibration detection sensor 4 is used to detect the vibration intensity of the vehicle in real time, and send a control signal to the swing amplitude switching mechanism according to the intensity of the vibration. The greater the vibration intensity, the greater the swing amplitude of the multiple guide vanes 6 when the power mechanism drives the reciprocating plate 8 to move up and down after adjustment by the swing amplitude switching mechanism. At the same time, the drive plate 9 causes the speed regulation mechanism to be triggered, increasing the speed of the fan 2. Furthermore, during normal operation, i.e. before vibration occurs or when the vibration intensity is weak, the multiple guide vanes 6 do not oscillate back and forth and remain parallel to the fins 301. At this time, the airflow driven by the fan 2 flows smoothly from both sides of the guide vanes 6 and directly enters the gap between the fins 301. At the same time, the guide vanes 6 cut the airflow, thereby increasing the airflow speed near the wall of the fins 301, which helps to promote heat transfer. When the vibration detection sensor 4 detects a large vibration intensity, the power mechanism drives the reciprocating plate 8 to move up and down repeatedly. The reciprocating plate 8 then drives the guide vane 6 to perform a reciprocating swinging motion through the transmission mechanism. The inclined guide vane 6 can change the direction of airflow, allowing the airflow to directly impact the wall surface of the fin 301. This effectively breaks down the non-flowing air layer on the fin 301 caused by vibration, preventing the heat transfer between the fin 301 and the mainstream air from being hindered. At the same time, it allows an effective temperature difference to be established on the surface of the fin 301, improving heat dissipation capacity and ensuring the working performance of the fuel cell under vibration conditions.

[0026] As a further embodiment of the present invention, please refer again. Figure 3 and Figure 6 The transmission mechanism includes a transmission arm 7 connected to the rotating shaft of the guide vane 6 and a roller 801 disposed on the reciprocating plate 8. The transmission arm 7 has a groove 701 along its own length that is adapted to the roller 801, and the roller 801 is rolled and fitted into the groove 701. The swing amplitude switching mechanism is used to drive the roller 801 to roll in the groove 701 when the guide vane 6 is parallel to the fin 301, so as to change the distance between the roller 801 and the rotating shaft of the guide vane 6.

[0027] As a further embodiment of the present invention, please refer again. Figure 4 The reciprocating plate 8 has two crossbars 24 connected to its side. The power mechanism includes a second electric cylinder 22 installed in the housing 1 and a connecting block 23 located at the movable end of the second electric cylinder 22. The two crossbars 24 pass through the connecting block 23 and are slidably connected to the connecting block 23.

[0028] In this embodiment, under vibration conditions, the second electric cylinder 22 drives the connecting block 23 to reciprocate. It should be noted that the reciprocating stroke of the second electric cylinder 22 remains unchanged. The connecting block 23 drives the reciprocating plate 8 to reciprocate up and down through the crossbar 24. Accordingly, the reciprocating plate 8 can drive the transmission arm 7 to reciprocate the guide vane 6 through the roller 801. The roller 801 reciprocates within the slide groove 701. As for the swing amplitude switching mechanism, its function is to drive the drive plate 9 to move the reciprocating plate 8 when the guide vane 6 and the fin 301 are in a parallel state. Specifically, when the vibration detection sensor 4 detects an increase in vibration intensity, the drive plate 9 drives the reciprocating plate 8 to move away from the fan 2. Correspondingly, the distance between the roller 801 and the rotating shaft of the guide vane 6 is shortened, and the crossbar 24 and the connecting block 23 slide relative to each other. Thus, the swing amplitude of the guide vane 6 increases while the reciprocating stroke of the reciprocating plate 8 remains unchanged. In response, based on the vibration intensity detection by the vibration detection sensor 4, when the vibration intensity increases, the swing amplitude switching mechanism can adjust the distance between the roller 801 and the rotating shaft of the guide vane 6 to increase the swing amplitude of the guide vane 6. The larger the swing amplitude of the guide vane 6, the greater its deflection angle to the airflow direction, and the greater the tilt angle when the airflow enters the gap of the fin 301. This significantly increases the component of the airflow velocity vector perpendicular to the fin 301 wall. The larger the vertical component, the stronger the momentum of the airflow impacting the fin 301 wall, and the more intense the stripping effect on the low-speed air layer attached to the fin 301 wall, thus achieving automatic matching of the air layer stripping effect with the current vibration condition. Furthermore, the turbulence intensity of the guide vane 6 can be adapted to the actual heat dissipation requirements. When the vehicle is on a bumpy road but the overall vehicle heat load is low, the guide vane 6 only needs to swing slightly to effectively break the air boundary layer on the surface of the fin 301, avoiding airflow turbulence and additional wind resistance caused by excessive turbulence. When the vehicle is under extreme conditions of high power output and severe vibration, the guide vane 6 automatically switches to large swing, providing a strong wall flushing effect and achieving graded targeted adjustment.

[0029] As a further embodiment of the present invention, please refer again. Figure 5 and Figure 6The swing amplitude switching mechanism includes a track 11 disposed in the housing 1, a slider 12 slidably fitted on the track 11 and connected to the drive plate 9, and a first electric cylinder 10 installed in the housing 1 with its movable end connected to the slider 12.

[0030] In this embodiment, when it is necessary to adjust the subsequent swing amplitude of the guide vane 6 to meet the current working conditions, the first electric cylinder 10 drives the slider 12 to slide on the track 11, and the slider 12 drives the drive plate 9 and the reciprocating plate 8 to move toward or away from the fan 2, thereby changing the distance between the roller 801 and the rotation axis of the guide vane 6. In detail, when the drive plate 9 and the reciprocating plate 8 move away from the fan 2, that is, when the distance between the roller 801 and the rotating shaft of the guide vane 6 shortens, the swing amplitude of the guide vane 6 increases. The drive plate 9 also drives the speed regulating mechanism to move, which increases the speed of the fan 2, thereby increasing the total airflow through the gap of the fins 301. On the one hand, this compensates for the additional wind resistance loss caused by the large swing of the guide vane 6. On the other hand, the higher airflow velocity is superimposed on the guiding effect of the guide vane 6, which further increases the airflow velocity and disturbance intensity that scours the wall of the fins 301, ensuring the maintenance of convective heat transfer efficiency under different vibration conditions.

[0031] As a further embodiment of the present invention, please refer again. Figure 3 , Figure 5 as well as Figure 6 The speed control mechanism includes a speed controller 13 installed in the housing 1. The speed controller 13 is provided with a speed control knob for changing the speed of the fan 2. The speed control knob is connected to a speed control execution structure, which is connected to the drive plate 9 through a follower structure.

[0032] It should be noted that the speed controller 13 is an application of existing technology. Its basic principle is to control the speed by changing the input voltage, current or winding connection method of the motor of the fan 2. This application will not elaborate further on this.

[0033] The speed control mechanism includes a gear 14 connected to the speed control knob and a toothed plate 15 meshing with the gear 14. The housing 1 also includes a guide block 16, which is slidably connected to the toothed plate 15 via a slot 1501 located on the side of the toothed plate 15.

[0034] The drive plate 9 is provided with a guide rail 901, and the follower structure includes a driven plate 18 that is slidably fitted on the guide rail 901. The two ends of the driven plate 18 are respectively provided with a first column 19 and a second column 20. The housing 1 is provided with a limiting plate 21. The first column 19 passes through the inclined groove 2101 on the limiting plate 21 and is slidably connected to the limiting plate 21. The toothed plate 15 is connected to a cross arm 17. The second column 20 extends into the strip groove 1701 on the cross arm 17 and is slidably connected to the cross arm 17.

[0035] In this embodiment, when the first electric cylinder 10 is working, it drives the slider 12 to move together with the drive plate 9 and the driven plate 18. When it is necessary to increase the swing amplitude of the guide vane 6, that is, the drive plate 9 drives the driven plate 18 to move away from the fan 2, the first column 19 slides in the inclined groove 2101, and can cause the driven plate 18 to move down relative to the drive plate 9. Correspondingly, the second column 20 slides in the strip groove 1701, and the driven plate 18 can drive the cross arm 17 and the toothed plate 15 to move down through the second column 20. The toothed plate 15 can drive the speed control knob on the speed controller 13 to rotate through the gear 14, so as to increase the speed of the fan 2 and increase the total air volume flowing through the gap of the fins 301.

[0036] In this invention, the oscillation amplitude of multiple guide vanes 6 and the speed of fan 2 are adjusted in a coordinated manner and linked through the same mechanical input to achieve automatic matching of vibration intensity and heat dissipation capacity. If the adjustment of the two is controlled by independent drive sources, a controller is required to collect signals and make logical judgments, which introduces the risk of electrical faults such as wire harness aging, connector oxidation, electromagnetic interference, and software failure. When the vibration intensifies, there may be a situation where the guide vanes 6 have already oscillated significantly but the speed of fan 2 has not yet increased, resulting in the additional wind resistance not being compensated in time and the actual ventilation volume on the surface of fin 301 decreasing instead of increasing.

[0037] A fuel cell cooling system includes the aforementioned integrated shock-resistant radiator.

[0038] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0039] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. An integrated shock-resistant radiator, comprising a housing, a fan disposed within the housing, and a heat exchanger disposed on the side of the housing; Its features are, Also includes: Two opposing vertical arms are located inside the shell, and multiple guide vanes corresponding to the gaps between two adjacent fins on the heat exchanger are rotatably installed between the two vertical arms. Two reciprocating plates are installed inside the housing. The reciprocating plates can be driven by a power mechanism installed inside the housing to move up and down repeatedly, and multiple guide vanes can be made to swing back and forth through a transmission mechanism. The drive plate is slidably fitted with the reciprocating plate. The drive plate is connected to the swing amplitude switching mechanism and the speed regulation mechanism. The swing amplitude switching mechanism communicates with the vibration detection sensor installed on the housing. It can drive the drive plate to move the reciprocating plate toward or away from the fan to change the swing amplitude of the guide vane. When the swing amplitude of the guide vane increases, the drive plate can trigger the speed regulation mechanism to increase the fan speed. The transmission mechanism includes a transmission arm connected to the rotating shaft of the guide vane and a roller provided on the reciprocating plate. The transmission arm is provided with a groove adapted to the roller along its own length direction, and the roller rolls and fits into the groove. The swing amplitude switching mechanism is used to drive the roller to roll in the groove when the guide vane is parallel to the fin, so as to change the distance between the roller and the rotation axis of the guide vane; The swing amplitude switching mechanism includes a track disposed within the housing, a slider slidably fitted onto the track and connected to the drive plate, and a first electric cylinder installed within the housing with its movable end connected to the slider; The speed control mechanism includes a speed controller installed inside the housing. The speed controller is equipped with a speed control knob for changing the speed of the fan. The speed control knob is connected to a speed control execution structure, which is connected to the drive board through a follower structure.

2. The integrated shock-resistant radiator according to claim 1, characterized in that, Two crossbars are connected to the side of the reciprocating plate. The power mechanism includes a second electric cylinder installed in the housing and a connecting block located at the movable end of the second electric cylinder. The two crossbars pass through the connecting block and are slidably connected to the connecting block.

3. The integrated shock-resistant radiator according to claim 1, characterized in that, The speed control mechanism includes a gear connected to the speed control knob and a gear plate meshing with the gear. A guide block is also provided inside the housing. The guide block is slidably connected to the gear plate through a slot provided on the side of the gear plate.

4. The integrated shock-resistant radiator according to claim 3, characterized in that, The drive plate is provided with a guide rail, and the follower structure includes a driven plate that is slidably fitted on the guide rail. The two ends of the driven plate are respectively provided with a first column and a second column. The housing is provided with a limiting plate. The first column passes through the inclined groove on the limiting plate and is slidably connected to the limiting plate. The toothed plate is connected to a cross arm. The second column extends into the strip groove on the cross arm and is slidably connected to the cross arm.

5. A fuel cell heat dissipation system, characterized in that, Including an integrated shock-resistant radiator as described in any one of claims 1-4.

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