Fuel cell cooling system based on vortex tube cooling effect

Abstract

The invention provides a fuel cell cooling system based on a vortex tube cooling effect, which comprises an air compressor, an intercooler, a humidifier, an electric pile, a check valve, a silencer, a three-way valve and a heat dissipation assembly which are connected in sequence, and is characterized by further comprising a vortex refrigeration tube and a plate heat exchanger, and the vortex refrigeration pipe is arranged between the silencer and the stop valve. According to the fuel cell cooling system based on the vortex tube cooling effect, by arranging the vortex cooling tube, high-pressure gas discharged from the tail of the system is utilized, and cold air generated by the vortex cooling tube is merged into the cooling system of the system, so that the energy consumption of heat dissipation is reduced, and the overall efficiency of the system is improved; and the volume of a heat dissipation assembly part which is one of the maximum components of the system is reduced, so that the overall volume of the system is reduced, and the volume power density of the system is improved. The auxiliary power consumption of the system is indirectly reduced, the integration level of the system is higher, and the cost is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of fuel cell cooling equipment, and in particular to a fuel cell cooling system based on a vortex tube cooling effect. Background Art

[0002] The fuel cell system is composed of multiple subsystems, including hydrogen subsystem, air subsystem, cooling water circuit, heat dissipation system, electronic control subsystem, etc. Each subsystem provides services for the fuel cell stack to maximize the performance output of the stack. Factors that affect efficiency include the voltage of the single chip of the stack, auxiliary power consumption, hydrogen utilization rate, etc. Auxiliary power consumption is the energy consumption required for the above subsystems to work, so reducing auxiliary consumption is a key factor in improving system efficiency. Therefore, the energy consumption generated by the work of each major subsystem will affect the overall efficiency of the system. In the existing solution, people will add a circulation system to the hydrogen circuit, so that the recycling of hydrogen increases the utilization rate of hydrogen, thereby improving the efficiency of the system.

[0003] However, in order to ensure cooling efficiency, the fan power and water tank size of the traditional fuel cell system are relatively large, which will inevitably reduce the integration and volume power density of the overall system. Summary of the invention

[0004] 1. Technical issues to be resolved

[0005] In view of the deficiencies of the prior art, the present invention provides a fuel cell cooling system based on the cooling effect of a vortex tube.

[0006] (II) Technical solution

[0007] To achieve the above objectives, the present invention is implemented through the following technical solutions: A fuel cell cooling system based on the cooling effect of a vortex tube, comprising an air compressor, an intercooler, a humidifier, a fuel cell stack, a shut-off valve, a muffler, a three-way valve and a heat dissipation assembly connected in sequence. It also includes a vortex cooling tube and a plate heat exchanger, wherein the vortex cooling tube is arranged between the muffler and the shut-off valve, and the hot air flow outlet end of the vortex cooling tube is connected to the muffler. The cold air flow outlet end is connected to the plate heat exchanger, the inlet end of the plate heat exchanger is connected to the fuel cell stack, and the outlet end of the plate heat exchanger is connected to the three-way valve and the muffler.

[0008] Preferably, the plate heat exchanger comprises a frame assembly, a sliding nozzle mechanism, a flip mechanism and a plurality of heat conducting plates. The sliding nozzle mechanism is arranged on the top of the frame assembly, and the sliding nozzle mechanism is arranged on the side of the frame assembly. The plurality of heat conducting plates are arranged in the frame assembly.

[0009] Preferably, the frame assembly includes an upper slide bar, a lower slide bar, a second support plate and a first support plate. Four openings are provided on the second support plate and the first support plate, and two through slide grooves are provided on the first support plate. An auxiliary slide is provided on the inner side of the second support plate, and a strip slide is provided on the bottom of the auxiliary slide. Both sides of the second support plate and the first support plate are movably connected with a split body, and one end of the upper slide bar is slidably fitted on the auxiliary slide. The other end passes through the through slide groove located at a high position, and one end of the lower slide bar is slidably fitted on the inner side of the second support plate, and the other end passes through the through slide groove located at a low position of the first support plate. The first support plate is detachably connected to the lower and upper slide bars.

[0010] Preferably, the heat conducting plate comprises a heat conducting surface a, a heat conducting surface b and a frame. The heat conducting surface a and the heat conducting surface b are respectively arranged on the front and back sides of the frame, and the top and bottom of the frame are both provided with notches. The notches are adapted to the lower slide bar and the upper slide bar.

[0011] Preferably, the frame assembly further comprises a plurality of sliding mounting seats, two rotating rods, four moving sliders and auxiliary slides. The four auxiliary slides are symmetrically arranged on the inner sides of the second support plate and the first support plate in pairs, and the moving sliders are slidably fitted on the auxiliary slides. The rotating rod is pivotally connected to the moving slider, and a plurality of sliding mounting seats are movably arranged on the rotating rod at equal intervals. The sliding mounting seats on different rotating rods are staggered with each other, and the sliding mounting seats are connected to a bottom corner of the frame.

[0012] Preferably, an inner cavity is provided in the support plate 2. The flip mechanism comprises a switch, a housing, a sliding seat, a sliding rod, a second take-up wheel, a linkage belt, a first take-up wheel and a plurality of guide wheels. The plurality of guide wheels are arranged in the housing, the sliding rod is slidably fitted in the housing, and the first take-up wheel is pivotally connected in the inner cavity. The second take-up wheel is coaxially connected with the take-up wheel, one end of the linkage belt is connected to the sliding rod, and the other end passes around the plurality of guide wheels and is wound on the first take-up wheel.

[0013] Preferably, the flipping mechanism further comprises a linkage wheel, a connecting rope and two contact wheels. The linkage wheel is pivotally connected to the second support plate, one end of the connecting rope is wound around the second take-up wheel, and the other end passes through the second support plate and is connected to the linkage wheel. The two contact wheels are coaxially connected to the second take-up wheel and the linkage wheel, respectively, and the contact wheels are in contact with the rotating rod.

[0014] Preferably, the flip mechanism further comprises a water storage column capable of storing liquid, a folding cover, a telescopic rod with magnetism, and a plurality of auxiliary nozzles. The sliding seat is connected to the sliding rod, and the water storage column is connected to the sliding seat. The telescopic rod is arranged on one end of the water storage column away from the sliding seat, and the telescopic rod is magnetically connected to a split part on one side of the support plate. The folding cover is arranged on the water storage column, and a plurality of auxiliary nozzles are arranged on the water storage column at equal intervals.

[0015] Preferably, an upper slide bar is provided on the transverse slide groove. The sliding nozzle mechanism comprises a driving wedge-shaped slider, a plurality of nozzles and a guide wheel. The bottom of the driving wedge-shaped slider is wedge-shaped, and the driving wedge-shaped slider is detachably connected to the transverse slide groove. A plurality of guide wheels are indirectly arranged at the bottom of the driving wedge-shaped slider, and a plurality of nozzles are arranged on both sides of the driving wedge-shaped slider, and the nozzles are connected to the water storage column through a conduit.

[0016] (III) Beneficial effects

[0017] The present invention provides a fuel cell cooling system based on the cooling effect of a vortex tube. It has the following beneficial effects:

[0018] 1. The fuel cell cooling system based on the vortex tube cooling effect utilizes the high-pressure gas at the tail exhaust of the system through the vortex cooling tube, and then incorporates the cold air generated by the vortex cooling tube into the cooling system of the system, thereby reducing the energy consumption of heat dissipation, improving the overall efficiency of the system, and reducing the volume of the heat dissipation assembly, one of the largest components of the system, thereby reducing the overall volume of the system and improving the system volume power density. Indirectly reducing the auxiliary power consumption of the system, making the system more integrated and reducing costs.

[0019] 2. The fuel cell cooling system based on the vortex tube cooling effect, through the linkage mechanism, allows the multiple heat exchanger plates in the heat exchanger of the present invention to be tilted and moved out on one side in contact with the same fluid. In this way, compared with the traditional heat exchanger inspection, which requires the heat exchanger plates to be disassembled one by one in sequence, the present invention allows personnel to observe and clean the surfaces of multiple heat exchanger plates in a short time, which is particularly suitable for personnel to inspect and repair the sealing strip on the surface after a certain corrosive fluid flows through the heat exchanger plate.

[0020] 3. The fuel cell cooling system based on the vortex tube cooling effect uses a mobile cleaning nozzle on the plate heat exchanger. After the heat exchanger plates are tilted, the heat exchanger plates on both sides are staggered and contacted with each other to form a V-shaped channel. The channel is used as a slide to allow the nozzle to move along the slide and spray water. At the same time, the heat exchanger plates tilted outward also allow the water to flow out of the frame assembly along the heat exchanger plates. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the connection of the system of the present invention;

[0022] Figure 2 This is a first stereoscopic view of the plate heat exchanger of the present invention;

[0023] Figure 3 This is a second stereoscopic view of the plate heat exchanger of the present invention;

[0024] Figure 4 This is a third stereoscopic view of the plate heat exchanger of the present invention;

[0025] Figure 5 This is a fourth stereoscopic view of the plate heat exchanger of the present invention;

[0026] Figure 6 This is a fifth stereoscopic view of the plate heat exchanger of the present invention;

[0027] Figure 7 This is a sixth stereoscopic view of the plate heat exchanger of the present invention;

[0028] Figure 8 This is the seventh stereoscopic view of the plate heat exchanger of the present invention.

[0029] In the figure: 1 frame assembly, 2 rotating rod, 3 lower slide rod, 4 support plate 1, 5 upper slide rod, 6 opening, 7 through slide groove, 8 horizontal slide groove, 9 split, 10 support plate 2, 11 auxiliary slide way, 12 heat conduction plate, 13 shell, 14 folding cover, 15 heat conduction a surface, 16 sliding mounting seat, 17 frame, 18 notch, 19 nozzle, 20 connecting rope, 21 driving wedge slider, 22 heat conduction b surface, 23 guide wheel, 24 auxiliary slide groove, 25 inner cavity, 26 strip slide way, 27 sliding nozzle mechanism, 28 switch, 29 flipping mechanism, 30 sliding seat, 31 moving slider, 32 contact wheel, 33 water storage column, 34 telescopic rod, 35 auxiliary nozzle, 36 linkage wheel, 37 sliding rod, 38 guide wheel, 39 linkage belt, 40 take-up wheel 1, 41 take-up wheel 2. DETAILED DESCRIPTION

[0031] The embodiment of the present invention provides a fuel cell cooling system based on the cooling effect of a vortex tube, such as Figure 1-8 As shown, it includes an air compressor, an intercooler, a humidifier, a battery stack, a shutoff valve, a muffler, a three-way valve and a heat dissipation assembly connected in sequence. It also includes a vortex cooling tube and a plate heat exchanger. The vortex cooling tube is arranged between the muffler and the shutoff valve, and the hot air flow outlet end of the vortex cooling tube is connected to the muffler. The cold air flow outlet end is connected to the plate heat exchanger, the plate heat exchanger inlet end is connected to the battery stack, and the plate heat exchanger outlet end is connected to the three-way valve and the muffler.

[0032] The plate heat exchanger comprises a frame assembly 1, a sliding nozzle mechanism 27, a flipping mechanism 29 and a plurality of heat conducting plates 12. The sliding nozzle mechanism 27 is arranged on the top of the frame assembly 1, and the sliding nozzle mechanism 29 is arranged on the side of the frame assembly 1. The plurality of heat conducting plates 12 are arranged in the frame assembly 1.

[0033] The frame assembly 1 includes an upper slide bar 5, a lower slide bar 3, a support plate 10 and a support plate 1 4. Four openings 6 are provided on the support plate 10 and the support plate 1 4, and two through slide grooves 7 are provided on the support plate 1 4. An auxiliary slide 11 is provided on the inner side of the support plate 10, and a strip slide 26 is provided at the bottom of the auxiliary slide 11. Both sides of the support plate 10 and the support plate 1 4 are movably connected with a split body 9, and one end of the upper slide bar 5 is slidably fitted on the auxiliary slide 11. The other end passes through the through slide groove 7 located at a high position, and one end of the lower slide bar 3 is slidably fitted on the inner side of the support plate 10, and the other end passes through the through slide groove 7 located at a low position of the support plate 1 4. The support plate 1 4 is detachably connected to the lower slide bar 3 and the upper slide bar 5.

[0034] The heat conducting plate 12 includes a heat conducting a surface 15, a heat conducting b surface 22 and a frame 17. The heat conducting a surface 15 and the heat conducting b surface 22 are respectively arranged on the front and back surfaces of the frame 17, and notches 18 are provided on the top and bottom of the frame 17. The notches 18 are adapted to the lower slide bar 3 and the upper slide bar 5.

[0035] The frame assembly 1 further includes a plurality of sliding mounting seats 16, two rotating rods 2, four moving sliders 31 and auxiliary slide grooves 24. The four auxiliary slide grooves 24 are symmetrically arranged on the inner sides of the support plate 2 10 and the support plate 1 4, and the moving sliders 31 are slidably fitted on the auxiliary slide grooves 24. The rotating rod 2 is pivotally connected to the moving slider 31, and a plurality of sliding mounting seats 16 are movably arranged on the rotating rod 2 at equal intervals. The sliding mounting seats 16 on different rotating rods 2 are staggered with each other, and the sliding mounting seats 16 are connected to a bottom corner of the frame 17.

[0036] The support plate 10 has an inner cavity 25. The flip mechanism 29 includes a switch 28, a housing 13, a sliding seat 30, a sliding rod 37, a take-up wheel 2 41, a linkage belt 39, a take-up wheel 1 40 and a plurality of guide wheels 38. The plurality of guide wheels 38 are arranged in the housing 13, the sliding rod 37 is slidably fitted in the housing 13, and the take-up wheel 1 40 is pivotally connected in the inner cavity 25. The take-up wheel 2 41 is coaxially connected to the take-up wheel 1 40, one end of the linkage belt 39 is connected to the sliding rod 37, and the other end passes around the plurality of guide wheels 38 and is wound around the take-up wheel 1 40.

[0037] The flipping mechanism 29 further includes a linkage wheel 36, a connecting rope 20 and two contact wheels 32. The linkage wheel 36 is pivotally connected to the upper support plate 10, one end of the connecting rope 20 is wound around the take-up wheel 41, and the other end passes through the support plate 10 and is connected to the linkage wheel 36. The two contact wheels 32 are coaxially connected to the take-up wheel 41 and the linkage wheel 36, respectively, and the contact wheels 32 are in contact with the rotating rod 2.

[0038] The flip mechanism 29 also includes a water storage column 33 capable of storing liquid, a folding cover 14, a telescopic rod 34 with magnetism, and a plurality of auxiliary nozzles 35. The sliding seat 30 is connected to the sliding rod 37, and the water storage column 33 is connected to the sliding seat 30. The telescopic rod 34 is arranged on one end of the water storage column 33 away from the sliding seat 30, and the telescopic rod 34 is magnetically connected to the split body 9 on one side of the support plate 4. The folding cover 14 is arranged on the water storage column 33, and a plurality of auxiliary nozzles 35 are arranged on the water storage column 33 at equal intervals.

[0039] An upper slide bar 5 is provided on the transverse slide groove 8. The sliding nozzle mechanism 27 includes a driving wedge-shaped slider 21, a plurality of nozzles 19 and a guide wheel 23. The bottom of the driving wedge-shaped slider 21 is wedge-shaped, and the driving wedge-shaped slider 21 is detachably connected to the transverse slide groove 8. A plurality of guide wheels 23 are indirectly arranged at the bottom of the driving wedge-shaped slider 21, and a plurality of nozzles 19 are arranged on both sides of the driving wedge-shaped slider 21, and the nozzles 19 are connected to the water storage column 33 through a conduit.

[0040] When in use, the air compressor compresses the air after filtering, and then enters the fuel cell stack after passing through the intercooler and humidifier to provide fuel for the fuel cell stack. The exhaust gas at the fuel cell stack outlet passes through the air shut-off valve and then enters the vortex cooling tube. The cold air in the vortex cooling tube comes out and gathers into the plate heat exchanger, and finally is discharged after being collected with the hot air end of the cooling tube through the muffler. As the system output continues to increase, the air side pressure is also getting higher and higher, and the cooling effect of the vortex cooling tube is getting better and better. When the fuel cell stack is rated for operation, the air path pressure is close to 200kPa, and the cold air generated by the cooling tube reaches below 0 degrees Celsius. The three-way valve passage scheme is adjusted to connect it with the heat dissipation assembly. When the hot water in the cooling path enters the plate heat exchanger, one side of the plate heat exchanger is the cooling hot water and the other side is the cold air in the vortex cooling tube. In the form of heat exchange between the two, the cold air takes away part of the heat, reducing the cooling water temperature. At this time, the heat dissipation burden of the heat dissipation assembly becomes smaller, and the fan heat dissipation power can be reduced and the heat dissipation surface of the heat dissipation water tank is reduced, so as to reduce the power consumption of the heat dissipation module and improve the system efficiency.

[0041] First of all, we need to explain the special installation method of the heat exchanger, that is, when the first heat exchanger is set, the two sides are AB, and when the second heat exchanger is set, the position needs to be reversed, that is, the BA side, so that the surfaces of the two adjacent heat exchangers are the same, which facilitates the flow of fluids with the same properties.

[0042] Therefore, when the plate heat exchanger needs to be inspected and cleaned, the personnel fill the water storage column 33 with cleaning water, and then control the support plate 14 to move outward along the upper slide bar 5, so that the support plate 14 will not squeeze the multiple heat conducting plates 12, and then control the upper slide bar 5 to separate it from the slot 18 along the auxiliary slide 11. Then control the switch 28 to move the sliding seat 30 down along the shell 13. At this time, the sliding seat 30 drives the sliding rod 37, and the sliding rod 37 pulls the linkage belt 39 to force the take-up wheel 140 to rotate. The take-up wheel 140 drives the contact wheel 32 to rotate, and then the contact wheel 32 contacts the rotating rod 2, thereby forcing the rotating rod 2 on the side in contact with the contact wheel 32 to rotate, so that the sliding mounting seat 16 turns outward, and then pulls out a part of the heat conducting plate 12. At the same time, the take-up wheel 140 rotates to drive the take-up wheel 2 41 to reel in the connecting rope 20, and pulls the connecting rope 20 to make the rotating rod 2 on the other side turn outward, thereby achieving Figure 6 The personnel can check the heat conducting plate 12 on both sides.

[0043] When water spray cleaning is required, the personnel can spray water from the auxiliary nozzle 35 by squeezing the folding cover 14 that is bulged due to water, and can also communicate with the nozzle 19 through the conduit, and then remove the driving wedge-shaped slider 21 and the horizontal slide 8, so that the bottom of the driving wedge-shaped slider 21 is in contact with the V-shaped slideway formed by the multiple heat conducting plates 12. The control guide wheel 23 further completes the movement of the driving wedge-shaped slider 21 on the slideway.

[0044] At the same time, in order to facilitate personnel to contact the overlapped corner of the heat conducting plates 12 on both sides after the folding, Figure 5 As shown, the control moving slider 31 moves to raise one side of the rotating rod 2, thereby making room for further inspection by personnel.

[0045] Therefore, the present invention arranges multiple heat conducting plates 12 alternately on the sliding mounting seats 16 on the two rotating rods 2, so that when the rotating rod 2 rotates, the leaking sides of multiple heat conducting plates 12 tilted to the same side are all in contact with the same liquid, which greatly facilitates personnel observation. At the same time, the tilting method of every other plate also facilitates personnel to detect and move through the gap.

[0046] In summary, the fuel cell cooling system based on the vortex tube cooling effect utilizes the high-pressure exhaust gas of the system through the vortex cooling tube, and then incorporates the cold air generated by the vortex cooling tube into the cooling system of the system, thereby reducing the energy consumption of heat dissipation, improving the overall efficiency of the system, and reducing the volume of the heat dissipation assembly, one of the largest components of the system, thereby reducing the overall volume of the system and improving the system volume power density. Indirectly reducing the auxiliary power consumption of the system, making the system more integrated and reducing costs.

Claims

1. A fuel cell cooling system based on the cooling effect of a vortex tube, comprising an air compressor, an intercooler, a humidifier, a fuel cell stack, a shutoff valve, a muffler, a three-way valve and a heat dissipation assembly connected in sequence, characterized in that: It also includes a vortex refrigeration tube and a plate heat exchanger, wherein the vortex refrigeration tube is arranged between the muffler and the air shut-off valve, the hot air flow outlet end of the vortex refrigeration tube is connected to the muffler, and the cold air flow outlet end is communicated with the plate heat exchanger, the inlet end of the plate heat exchanger is connected to the battery stack, and the outlet end of the plate heat exchanger is communicated with the three-way valve and the muffler.

2. A fuel cell cooling system based on vortex tube cooling effect according to claim 1, characterized in that: The plate heat exchanger comprises a frame assembly (1), a sliding nozzle mechanism (27), a flipping mechanism (29) and a plurality of heat conducting plates (12); the sliding nozzle mechanism (27) is arranged on the top of the frame assembly (1), the sliding nozzle mechanism (27) is arranged on the side of the frame assembly (1), and the plurality of heat conducting plates (12) are arranged inside the frame assembly (1).

3. A fuel cell cooling system based on vortex tube cooling effect according to claim 2, characterized in that: The frame assembly (1) comprises an upper slide bar (5), a lower slide bar (3), a second support plate (10) and a first support plate (4), the second support plate (10) and the first support plate (4) are both provided with four openings (6), the first support plate (4) is provided with two through slide grooves (7), an auxiliary slideway (11) is provided on the inner side of the second support plate (10), a strip slideway (26) is provided at the bottom of the auxiliary slideway (11), and the second support plate (10) is provided with a plurality of openings (6) on the first support plate (4). 10) and both sides of the support plate one (4) are movably connected with a split body (9), one end of the upper slide bar (5) is slidably fitted on the auxiliary slideway (11), and the other end passes through a through slide groove (7) located at a high position, one end of the lower slide bar (3) is slidably fitted on the inner side of the support plate two (10), and the other end passes through a through slide groove (7) located at a low position of the support plate one (4), and the support plate one (4) is detachably connected with the lower slide bar (3) and the upper slide bar (5).

4. A fuel cell cooling system based on vortex tube cooling effect according to claim 3, characterized in that: The heat conducting plate (12) comprises a heat conducting a surface (15), a heat conducting b surface (22) and a frame (17); the heat conducting a surface (15) and the heat conducting b surface (22) are respectively arranged on the front and back surfaces of the frame (17); the top and bottom of the frame (17) are both provided with notches (18); the notches (18) are adapted to fit the lower sliding rod (3) and the upper sliding rod (5).

5. A fuel cell cooling system based on vortex tube cooling effect according to claim 4, characterized in that: The frame assembly (1) further comprises a plurality of sliding mounting seats (16), two rotating rods (2), four moving sliders (31) and auxiliary slide grooves (24), wherein the four auxiliary slide grooves (24) are symmetrically arranged in pairs on the inner sides of the second support plate (10) and the first support plate (4), the moving sliders (31) are slidably fitted on the auxiliary slide grooves (24), the rotating rod (2) is pivotally connected to the moving sliders (31), a plurality of sliding mounting seats (16) are movably arranged on the rotating rod (2) at equal intervals, the sliding mounting seats (16) located on different rotating rods (2) are staggered with each other, and the sliding mounting seats (16) are connected to a bottom corner of the frame (17).

6. A fuel cell cooling system based on vortex tube cooling effect according to claim 5, characterized in that: The support plate (10) is provided with an inner cavity (25), and the flip mechanism (29) comprises a switch (28), a housing (13), a sliding seat (30), a sliding rod (37), a take-up wheel (41), a linkage belt (39), a take-up wheel (40) and a plurality of guide wheels (38). The plurality of guide wheels (38) are arranged in the housing (13), the sliding rod (37) is slidably fitted in the housing (13), the take-up wheel (40) is pivotally connected in the inner cavity (25), the take-up wheel (41) is coaxially connected to the take-up wheel (40), one end of the linkage belt (39) is connected to the sliding rod (37), and the other end passes around the plurality of guide wheels (38) and is wound around the take-up wheel (40).

7. A fuel cell cooling system based on vortex tube cooling effect according to claim 6, characterized in that: The flipping mechanism (29) further comprises a linkage wheel (36), a connecting rope (20) and two contact wheels (32), wherein the linkage wheel (36) is pivotally connected to the second support plate (10), one end of the connecting rope (20) is wound around the second take-up wheel (41), and the other end passes through the second support plate (10) and is connected to the linkage wheel (36). The two contact wheels (32) are respectively connected to the second take-up wheel (41) and the linkage wheel (36) coaxially, and the contact wheels (32) are in contact with the rotating rod (2).

8. A fuel cell cooling system based on vortex tube cooling effect according to claim 7, characterized in that: The flip mechanism (29) further comprises a water storage column (33) capable of storing liquid, a folding cover (14), a telescopic rod (34) with magnetism, and a plurality of auxiliary nozzles (35); the sliding seat (30) is connected to the sliding rod (37); the water storage column (33) is connected to the sliding seat (30); the telescopic rod (34) is arranged on an end of the water storage column (33) away from the sliding seat (30); the telescopic rod (34) is magnetically connected to a split body (9) on one side of the support plate (4); the folding cover (14) is arranged on the water storage column (33); and the plurality of auxiliary nozzles (35) are arranged on the water storage column (33) at equal intervals.

9. A fuel cell cooling system based on vortex tube cooling effect according to claim 8, characterized in that: An upper slide bar (5) is provided on the transverse slide groove (8), and the sliding nozzle mechanism (27) comprises a driving wedge-shaped slider (21), a plurality of nozzles (19) and a guide wheel (23). The bottom of the driving wedge-shaped slider (21) is wedge-shaped, and the driving wedge-shaped slider (21) is detachably connected to the transverse slide groove (8). The plurality of guide wheels (23) are indirectly arranged at the bottom of the driving wedge-shaped slider (21). The plurality of nozzles (19) are arranged on both sides of the driving wedge-shaped slider (21), and the nozzles (19) are connected to the water storage column (33) through a conduit.

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