Auxiliary heat dissipation device and method for hydrogen fuel cell vehicle

Abstract

The present invention provides an auxiliary heat dissipation device for a hydrogen fuel cell vehicle and a method thereof, which relates to the field of hydrogen fuel cells and includes a mounting frame, a mounting bracket, a radiator, a filter chamber and a water tank. The four corners of the top of the mounting frame are provided with mounting brackets for connecting with the bottom of a vehicle body. A plurality of groups of radiators are provided inside the mounting frame, and partitions are provided between the plurality of groups of radiators. The present invention installs the device at the bottom of the vehicle body through the mounting bracket, and sets a filter chamber for filtering and reusing water generated by a stack reaction. After the recovered water is merged with the cooling water in the cooling system, the cooling water is cooled first, and then a plurality of groups of liquid flow rings are set, and the diameters of the plurality of liquid flow rings decrease successively from the outside to the inside, so that each group of liquid flow rings is exposed to a position where the air can blow, thereby increasing the contact area between the liquid flow rings and the air, thereby increasing the heat dissipation effect.

Description

Technical Field

[0001] The present invention relates to the technical field of hydrogen fuel cells, and in particular to an auxiliary heat dissipation device and method for a hydrogen fuel cell vehicle. Background Art

[0002] A hydrogen fuel cell is a power generation device that directly converts the chemical energy of hydrogen and oxygen into electrical energy. Its basic principle is the reverse reaction of water electrolysis. Hydrogen and oxygen are supplied to the anode and cathode respectively. After hydrogen diffuses outward through the anode and reacts with the electrolyte, it releases electrons through an external load to reach the cathode. In the automotive industry, the existing hydrogen fuel cell engine assembly has been developed based on this principle. During operation, the engine does not produce polluting gases but only water. However, the water produced is directly discharged on the road and is not fully utilized.

[0003] In addition, during the electrochemical reaction, not only electrical energy is generated, but also a large amount of heat is generated. This heat needs to be taken away by the cooling system. When the cooling system takes away the heat, the temperature of the coolant will increase. In order to ensure the temperature requirements during the hydrogen fuel cell reaction, a coolant radiator needs to be used for heat dissipation. Therefore, the present invention proposes an auxiliary heat dissipation device for a hydrogen fuel cell vehicle, which recovers the water generated by the reaction and uses it for heat dissipation of the cooling system. Summary of the invention

[0004] In view of the above problems, the present invention proposes an auxiliary heat dissipation device for a hydrogen fuel cell vehicle. The auxiliary heat dissipation device for a hydrogen fuel cell vehicle is installed on the bottom of the vehicle body through a mounting frame. A filter bin is provided to filter and reuse the water generated by the fuel cell reaction. After the recovered water merges with the cooling water in the cooling system, the cooling water will be cooled first.

[0005] To achieve the purpose of the present invention, the present invention is implemented through the following technical solutions: an auxiliary heat dissipation device for a hydrogen fuel cell vehicle, comprising a mounting frame, a mounting bracket, a radiator, a filter bin and a water tank, wherein the four corners of the top of the mounting frame are provided with mounting brackets for connecting with the bottom of the vehicle body, a plurality of groups of radiators are arranged inside the mounting frame, a partition is arranged between the plurality of groups of radiators, a filter bin for filtering recycled water is arranged on one side of the mounting frame, a water tank for temporarily storing cooled coolant is arranged on the other side of the mounting frame, a water outlet is arranged on the top of the water tank, and a conveying assembly is arranged between the filter bin, the water tank and the radiator;

[0006] The radiator includes a fixed ring, a heat sink group and a liquid flow ring. The liquid flow ring is provided with multiple groups. The diameters of the multiple groups of liquid flow rings are different. The multiple groups of liquid flow rings are distributed in a funnel shape. The upper ends of the multiple groups of liquid flow rings are connected with connecting pipes. The top of the liquid flow ring located at one end is provided with a liquid inlet pipe, and the top of the liquid flow ring located at the other end is provided with a liquid outlet pipe. Heat sink groups are inserted through the multiple groups of liquid flow rings with different diameters. The heat sink groups are tightly fitted to the side walls of the liquid flow rings. A fixed ring is fixed on the outer wall of the heat sink group located on the outermost side, and the outer wall of the fixed ring is fixedly connected to the inner wall of the mounting frame and the side wall of the partition.

[0007] A further improvement is that the heat sink group is formed by multiple groups of V-shaped heat sinks distributed in a ring array, there are air holes between the multiple groups of V-shaped heat sinks, and multiple groups of air grooves are also provided on the side walls of the V-shaped heat sinks.

[0008] A further improvement is that the inner side angle of the V-shaped heat sink is 60°-80°, and the air groove is wavy.

[0009] Further improvements are: a filter assembly is provided inside the filter bin, and the filter assembly includes an adjusting plate, a fixing plate, a filter plate, an adjusting assembly and a sealing assembly; an adjusting plate is provided through one side of the top of the filter bin, and an adjusting assembly for adjusting the lifting of the adjusting plate is also provided on the top of the filter bin; a fixing plate is provided on the inner side of the adjusting plate, and the fixing plate is located inside the filter bin and fixedly connected to the top wall of the bin body; a removable filter plate is provided below the fixing plate; the filter plate and the adjusting plate are both sealed to the filter bin via the sealing assembly; and two groups of water inlets are provided on the outer side of the top of the filter bin.

[0010] A further improvement is that the sealing assembly includes a first sealing gasket, a second sealing gasket and a sealing groove, a sealing groove is provided below the adjustment plate, a first sealing gasket is also provided at the position where the adjustment plate is connected to the inner wall of the filter bin, and two groups of second sealing gaskets are symmetrically provided at the bottom of the fixed plate.

[0011] A further improvement is that: the second sealing gasket is frame-shaped, the filter plate is inserted between two groups of second sealing gaskets, the first sealing gasket and the second sealing gasket are made of rubber material, and the first sealing gasket limits the movement of the adjustment plate.

[0012] A further improvement is that a cover plate is provided at the outer end of the filter plate, a sealing frame is provided on the inner side of the cover plate, a frame groove matched with the sealing frame is provided on the outer wall of the filter bin, and the sealing frame on the cover plate is fixed by bolts after being engaged with the frame groove.

[0013] A further improvement is that the adjustment assembly includes a limit frame seat, a rotating shaft, a rack, a gear and an adjustment seat, the limit frame seat is located at the top of the filter bin, one side of the limit frame seat limits the adjustment plate, the adjustment plate passes through a side of the limit frame seat and is provided with a rack, a rotating shaft is rotatably installed in the limit frame seat, a gear meshing with the rack is fixed on the rotating shaft, and the other end of the rotating shaft is rotated through the side wall of the limit frame seat and then fixedly connected to the adjustment seat.

[0014] A further improvement is that the delivery assembly includes a main pipe and a delivery pump, the main pipe is symmetrically arranged on the top of the installation frame, multiple groups of liquid inlet pipes and liquid outlet pipes on the radiator all penetrate the installation frame and are connected to their respective main pipes, and a delivery pump is provided on one side of the filter bin and the water tank, and the delivery pump is respectively connected to the two groups of main pipes.

[0015] Using the auxiliary heat dissipation device of the hydrogen fuel cell vehicle, the heat dissipation method includes the following steps:

[0016] S1. The device is installed on the bottom of the vehicle body through a mounting frame, and the water generated by the battery stack reaction and the coolant of the cooling system are sent into the filter chamber through the water inlet. After filtering by the filter plate, the recovered water and coolant are sent into the radiator through a delivery pump;

[0017] S2. When the vehicle body is moving, the liquid is cooled by the flow of wind in the radiator. Specifically, the coolant enters the liquid flow ring, wherein the diameters of multiple groups of liquid flow rings decrease from the outside to the inside, so that the liquid fills one liquid flow ring and then enters another liquid flow ring through the leveling pipe. The heights of the liquid flow rings are different, thereby increasing the contact area between the liquid flow ring and the air, thereby increasing the heat dissipation function of the liquid flow ring;

[0018] S3. At the same time, a heat sink group is inserted between the multiple groups of liquid flow rings, and heat conduction is carried out through the fit between the heat sink and the liquid flow ring. At the same time, the setting of the heat sink group further increases the contact area with the air, thereby further accelerating the heat dissipation rate of the liquid flow ring;

[0019] S4. To further improve the heat dissipation capacity of the liquid flow ring, the device sets the heat sink into a V shape, the angle of the inner side of the V-shaped heat sink is 60°-80°, and the side wall of the V-shaped heat sink is also provided with a wave-shaped air groove. Compared with the traditional straight-piece design, the V-shaped structural design can increase the contact area with the liquid flow ring and form more air channels. The design of the air groove further increases the contact time between the air and the V-shaped heat sink, thereby greatly increasing the heat dissipation rate of the radiator of the device. When used in conjunction with the cold zone mechanism of the vehicle itself, it greatly ensures the long-term operation of the cooling system;

[0020] S5. The coolant that has been fully cooled enters the water tank and is then sent into the vehicle cooling system through the water outlet, thereby ensuring the stable operation of the vehicle cooling system.

[0021] The beneficial effects of the present invention are as follows: the present invention installs the device at the bottom of the vehicle body through a mounting frame, and sets a filter chamber for filtering and reusing the water generated by the battery stack reaction. After the recovered water merges with the cooling water in the cooling system, the cooling water will be cooled first, and then multiple groups of liquid flow rings are set, and the diameters of the multiple groups of liquid flow rings decrease from the outside to the inside, so that each group of liquid flow rings is exposed to a position where the air can blow, increasing the contact area with the air, thereby increasing the heat dissipation effect, and the multiple groups of liquid flow rings are connected by connecting pipes to ensure the fluidity of the liquid, and at the same time, a heat sink group is inserted between each group of liquid flow rings, and the heat on the liquid flow ring is conducted through the heat sink group. Dispersion, and at the same time, the heat sink group greatly increases the contact area with the air, further increasing the heat dissipation rate of the radiator, and the heat sink is arranged in a V shape, the inner angle of the V-shaped heat sink is 60°-80°, and the side wall of the V-shaped heat sink is also provided with a wavy air groove. Compared with the traditional straight-piece design, the V-shaped structural design can increase the contact area with the liquid flow ring and form more air channels. The design of the air groove further increases the contact time between the air and the V-shaped heat sink, thereby greatly increasing the heat dissipation rate of the radiator of the device. When used in conjunction with the cold zone mechanism of the vehicle itself, it greatly guarantees the long-term operation of the cooling system. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is an assembly schematic diagram of the present invention.

[0023] Figure 2 It is the front view of the present invention.

[0024] Figure 3 It is a disassembled schematic diagram of the radiator of the present invention.

[0025] Figure 4 It is a front view of the radiator of the present invention.

[0026] Figure 5 It is a schematic structural diagram of the V-shaped heat sink of the present invention.

[0027] Figure 6 It is a schematic diagram of the structure inside the filter bin of the present invention.

[0028] Figure 7 It is a schematic diagram of the structure of the regulating component of the present invention.

[0029] Figure 8 It is a schematic diagram of the disassembly of the filter plate of the present invention.

[0030] Wherein: 1. mounting frame; 2. mounting frame; 3. radiator; 4. filter chamber; 5. water tank; 6. partition; 7. water outlet; 8. fixing ring; 9. heat sink assembly; 10. liquid flow ring; 11. connecting pipe; 12. liquid inlet pipe; 13. liquid outlet pipe; 14. V-shaped heat sink; 15. air hole; 16. air groove; 17. adjusting plate; 18. fixing plate; 19. filter plate; 20. water inlet; 21. first sealing gasket; 22. second sealing gasket; 23. sealing groove; 24. cover plate; 25. sealing frame; 26. frame groove; 27. limit frame seat; 28. rotating shaft; 29. ​​rack; 30. gear; 31. adjusting seat; 32. main pipe; 33. delivery pump. DETAILED DESCRIPTION

[0031] In order to deepen the understanding of the present invention, the present invention will be further described in detail below in conjunction with examples. The examples are only used to explain the present invention and do not constitute a limitation on the protection scope of the present invention.

[0032] according to Figure 1-8 As shown, this embodiment proposes an auxiliary heat dissipation device for a hydrogen fuel cell vehicle, comprising a mounting frame 1, a mounting frame 2, a radiator 3, a filter chamber 4 and a water tank 5. The four corners of the top of the mounting frame 1 are provided with mounting frames 2 for connecting to the bottom of the vehicle body. The interior of the mounting frame 1 is provided with multiple groups of radiators 3, and partitions 6 are provided between the multiple groups of radiators 3. One side of the mounting frame 1 is provided with a filter chamber 4 for filtering recycled water, and the other side of the mounting frame 1 is provided with a water tank 5 for temporarily storing the cooling liquid after cooling. The top of the water tank 5 is provided with a water outlet 7, and a conveying component is provided between the filter chamber 4, the water tank 5 and the radiator 3;

[0033] The device is installed on the bottom of the vehicle body through the mounting frame 2, and the coolant in the radiator 3 is cooled by the wind force generated when the vehicle body moves, and then sent back to the cooling system of the vehicle body, thereby increasing the stable operation of the vehicle body cooling movement. At the same time, the device is also provided with a filter chamber 4 for filtering and reusing the water generated by the battery stack reaction;

[0034] The radiator 3 includes a fixed ring 8, a heat sink group 9 and a liquid flow ring 10. The liquid flow ring 10 is provided with multiple groups. The diameters of the multiple groups of liquid flow rings 10 are different. The multiple groups of liquid flow rings 10 are distributed in a funnel shape. The upper ends of the multiple groups of liquid flow rings 10 are connected with connecting pipes 11. The top of the liquid flow ring 10 located at one end is provided with a liquid inlet pipe 12, and the top of the liquid flow ring 10 located at the other end is provided with a liquid outlet pipe 13. Heat sink groups 9 are inserted through the multiple groups of liquid flow rings 10 with different diameters. The heat sink groups 9 are tightly fitted with the side walls of the liquid flow ring 10. A fixed ring 8 is fixed on the outer wall of the heat sink group 9 located at the outermost side, and the outer wall of the fixed ring 8 is fixedly connected to the inner wall of the mounting frame 1 and the side wall of the partition 6.

[0035] The device is provided with a plurality of groups of liquid flow rings 10, and the diameters of the plurality of groups of liquid flow rings 10 decrease from the outside to the inside, so that each group of liquid flow rings 10 is exposed to a position where the air can blow, thereby increasing the contact area with the air and thus increasing the heat dissipation effect. The plurality of groups of liquid flow rings 10 are connected by connecting pipes 11 to ensure the fluidity of the liquid. At the same time, a heat sink group 9 is inserted between each group of liquid flow rings 10, and the heat on the liquid flow rings 10 is conducted and dispersed through the heat sink group 9. At the same time, the heat sink group 9 greatly increases the contact area with the air, further increasing the heat dissipation rate of the radiator 3.

[0036] The heat sink group 9 is formed by a plurality of groups of V-shaped heat sinks 14 distributed in a ring array. There are air holes 15 between the plurality of groups of V-shaped heat sinks 14 . The side walls of the V-shaped heat sinks 14 are also provided with a plurality of groups of air grooves 16 .

[0037] The inner side angle of the V-shaped heat sink 14 is 60°-80°, and the air groove 16 is wavy.

[0038] By arranging the heat sink into a V shape, the angle of the inner side of the V-shaped heat sink 14 is 60°-80°, and the side wall of the V-shaped heat sink 14 is also provided with a wavy air groove 16. Compared with the traditional straight-piece design, the V-shaped structural design can increase the contact area with the liquid flow ring 10 and form more air channels. The design of the air groove 16 further increases the contact time between the air and the V-shaped heat sink 14, thereby greatly increasing the heat dissipation rate of the radiator 3 of the device. When used in conjunction with the cold zone mechanism of the vehicle itself, it greatly ensures the long-term operation of the cooling system.

[0039] A filter assembly is provided inside the filter bin 4, and the filter assembly includes an adjusting plate 17, a fixing plate 18, a filter plate 19, an adjusting assembly and a sealing assembly. An adjusting plate 17 is provided through one side of the top of the filter bin 4, and an adjusting assembly for adjusting the lifting of the adjusting plate 17 is also provided on the top of the filter bin 4. A fixing plate 18 is provided on the inner side of the adjusting plate 17, and the fixing plate 18 is located inside the filter bin 4 and fixedly connected to the top wall of the bin body. A detachable filter plate 19 is provided below the fixing plate 18, and the filter plate 19 and the adjusting plate 17 are both sealed and connected to the filter bin 4 through the sealing assembly. Two groups of water inlets 20 are provided on the outer side of the top of the filter bin 4.

[0040] The sealing assembly includes a first sealing gasket 21, a second sealing gasket 22 and a sealing groove 23. A sealing groove 23 is provided below the adjustment plate 17. A first sealing gasket 21 is also provided at the position where the adjustment plate 17 is connected to the inner wall of the filter bin 4. Two groups of second sealing gaskets 22 are symmetrically provided at the bottom of the fixed plate 18.

[0041] The second sealing gasket 22 is frame-shaped, and the filter plate 19 is inserted between two groups of second sealing gaskets 22 . The first sealing gasket 21 and the second sealing gasket 22 are made of rubber material, and the first sealing gasket 21 limits the movement of the adjustment plate 17 .

[0042] The outer end of the filter plate 19 is provided with a cover plate 24, the inner side of the cover plate 24 is provided with a sealing frame 25, the outer wall of the filter chamber 4 is provided with a frame groove 26 adapted to the sealing frame 25, and the sealing frame 25 on the cover plate 24 is engaged with the frame groove 26 and fixed by bolts.

[0043] Since there is leakage of residual hydrogen during the reaction of the battery stack, it is usually discharged to the outside together with the generated water to prevent hydrogen accumulation. In the process of water discharge, due to contact with the outside, some impurities are present in the water body, and the presence of impurities will have a bad effect on cooling. Therefore, the device filters the incoming recycled water by setting a filter plate 19, and after the recycled water merges with the cooling water in the cooling system, the cooling water will be cooled first, and then the radiator 3 will fully dissipate the heat before sending it to the cooling system, thereby ensuring the stability of the heat dissipation system.

[0044] The adjustment assembly includes a limit frame seat 27, a rotating shaft 28, a rack 29, a gear 30 and an adjustment seat 31. The limit frame seat 27 is located at the top of the filter bin 4. One side of the limit frame seat 27 limits the adjustment plate 17. A rack 29 is provided on one side of the adjustment plate 17 passing through the limit frame seat 27. A rotating shaft 28 is rotatably installed in the limit frame seat 27. A gear 30 meshing with the rack 29 is fixed on the rotating shaft 28. The other end of the rotating shaft 28 rotates through the side wall of the limit frame seat 27 and is fixedly connected to the adjustment seat 31.

[0045] After a long period of operation, when the filter plate 19 needs to be replaced, the device drives the rotating shaft 28 to rotate by rotating the adjusting seat 31, and then drives the gear 30 to drive the rack 29 to rotate, so that the adjusting plate 17 moves down and is inserted into the sealing groove 23, thereby separating it, and then removing the cover plate 24 to separate the cover plate 24 from the filter chamber 4, so that the filter plate 19 can be pulled out, and then the filter plate 19 can be replaced, and then the filter plate 19 and the adjusting plate 17 are reset, so that the water body can continue to be filtered.

[0046] The conveying assembly includes a main pipe 32 and a conveying pump 33. The main pipe 32 is symmetrically arranged on the top of the installation frame 1. The liquid inlet pipes 12 and the liquid outlet pipes 13 on the multiple groups of radiators 3 all penetrate the installation frame 1 and are connected to their respective main pipes 32. The conveying pump 33 is provided on one side of the filter chamber 4 and the water tank 5. The conveying pump 33 is respectively connected to the two groups of main pipes 32.

[0047] Using the auxiliary heat dissipation device of the hydrogen fuel cell vehicle, the heat dissipation method includes the following steps:

[0048] S1. The device is installed on the bottom of the vehicle body through the mounting frame 2, and the water generated by the battery stack reaction and the coolant of the cooling system are sent into the filter chamber 4 through the water inlet 20. After being filtered by the filter plate 19, the recovered water and coolant are sent into the radiator 3 through the delivery pump 33;

[0049] S2. When the vehicle body is moving, the wind in the radiator 3 flows to cool the liquid. Specifically, the coolant enters the liquid flow ring 10, wherein the diameters of the multiple groups of liquid flow rings 10 decrease from the outside to the inside, so that the liquid fills one liquid flow ring 10 and then enters another liquid flow ring 10 through the leveling pipe. The heights of the liquid flow rings 10 are different, thereby increasing the contact area between the liquid flow ring 10 and the air, thereby increasing the heat dissipation function of the liquid flow ring 10;

[0050] S3. At the same time, a heat sink group 9 is inserted between the multiple groups of liquid flow rings 10, and heat conduction is carried out through the adhesion between the heat sink and the liquid flow ring 10. At the same time, the setting of the heat sink group 9 further increases the contact area with the air, thereby further accelerating the heat dissipation rate of the liquid flow ring 10;

[0051] S4. To further improve the heat dissipation capacity of the liquid flow ring 10, the device arranges the heat sink into a V shape, the angle of the inner side of the V-shaped heat sink 14 is 60°-80°, and the side wall of the V-shaped heat sink is also provided with a wave-shaped air groove 16. Compared with the traditional straight-sheet design, the V-shaped structural design can increase the contact area with the liquid flow ring 10 and form more air channels. The design of the air groove 16 further increases the contact time between the air and the V-shaped heat sink 14, thereby greatly increasing the heat dissipation rate of the radiator 3 of the device. When used in conjunction with the cold zone mechanism of the vehicle itself, it greatly ensures the long-term operation of the cooling system.

[0052] S5. The coolant after sufficient heat dissipation enters the water tank 5, and then is sent into the vehicle cooling system through the water outlet 7, thereby ensuring the stable operation of the vehicle cooling system.

[0053] The above shows and describes the basic principles, main features and advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. An auxiliary heat dissipation device for a hydrogen fuel cell vehicle, characterized in that: The invention comprises a mounting frame (1), a mounting bracket (2), a radiator (3), a filter chamber (4) and a water tank (5), wherein the four corners of the top of the mounting frame (1) are each provided with a mounting bracket (2) for connecting to the bottom of a vehicle body, a plurality of groups of radiators (3) are arranged inside the mounting frame (1), a partition (6) is arranged between the plurality of groups of radiators (3), a filter chamber (4) for filtering recycled water is arranged on one side of the mounting frame (1), a water tank (5) for temporarily storing cooling liquid is arranged on the other side of the mounting frame (1), a water outlet (7) is arranged on the top of the water tank (5), and a conveying assembly is arranged between the filter chamber (4), the water tank (5) and the radiator (3); The radiator (3) comprises a fixed ring (8), a heat sink group (9) and a liquid flow ring (10). The liquid flow ring (10) is provided with a plurality of groups. The diameters of the plurality of groups of liquid flow rings (10) are different. The plurality of groups of liquid flow rings (10) are distributed in a funnel shape. The upper ends of the plurality of groups of liquid flow rings (10) are connected with connecting pipes (11). The top of the liquid flow ring (10) located at one end is provided with a liquid inlet pipe (12). The top of the liquid flow ring (10) located at the other end is provided with a liquid outlet pipe (13). A heat sink group (9) is inserted through the plurality of groups of liquid flow rings (10) with different diameters. The heat sink group (9) is tightly fitted with the side wall of the liquid flow ring (10). A fixed ring (8) is fixed on the outer wall of the heat sink group (9) located at the outermost side. The outer wall of the fixed ring (8) is fixedly connected to the inner wall of the mounting frame (1) and the side wall of the partition (6).

2. The auxiliary heat dissipation device for a hydrogen fuel cell vehicle according to claim 1, characterized in that: The heat sink group (9) is formed by a plurality of groups of V-shaped heat sinks (14) distributed in a ring array, air holes (15) are provided between the plurality of groups of V-shaped heat sinks (14), and a plurality of groups of air grooves (16) are also provided on the side walls of the V-shaped heat sinks (14).

3. The auxiliary heat dissipation device for a hydrogen fuel cell vehicle according to claim 2, characterized in that: The inner side angle of the V-shaped heat sink (14) is 60°-80°, and the air groove (16) is wavy.

4. The auxiliary heat dissipation device for a hydrogen fuel cell vehicle according to claim 1, characterized in that: A filter assembly is provided inside the filter bin (4), and the filter assembly comprises an adjustment plate (17), a fixing plate (18), a filter plate (19), an adjustment assembly and a sealing assembly. An adjustment plate (17) is provided through one side of the top of the filter bin (4). An adjustment assembly for adjusting the lifting of the adjustment plate (17) is also provided on the top of the filter bin (4). A fixing plate (18) is provided on the inner side of the adjustment plate (17). The fixing plate (18) is located inside the filter bin (4) and is fixedly connected to the top wall of the bin body. A detachable filter plate (19) is provided below the fixing plate (18). The filter plate (19) and the adjustment plate (17) are both sealedly connected to the filter bin (4) via the sealing assembly. Two groups of water inlets (20) are provided on the outer side of the top of the filter bin (4).

5. The auxiliary heat dissipation device for a hydrogen fuel cell vehicle according to claim 4, characterized in that: The sealing assembly comprises a first sealing gasket (21), a second sealing gasket (22) and a sealing groove (23); the sealing groove (23) is provided below the adjustment plate (17); a first sealing gasket (21) is also provided at a position where the adjustment plate (17) is connected to the inner wall of the filter bin (4); and two groups of second sealing gaskets (22) are symmetrically provided at the bottom of the fixed plate (18).

6. The auxiliary heat dissipation device for a hydrogen fuel cell vehicle according to claim 5, characterized in that: The second sealing gasket (22) is frame-shaped, the filter plate (19) is inserted between two groups of second sealing gaskets (22), the first sealing gasket (21) and the second sealing gasket (22) are made of rubber material, and the first sealing gasket (21) limits the movement of the adjustment plate (17).

7. The auxiliary heat dissipation device for a hydrogen fuel cell vehicle according to claim 4, characterized in that: A cover plate (24) is provided at the outer end of the filter plate (19), a sealing frame (25) is provided on the inner side of the cover plate (24), a frame groove (26) matching the sealing frame (25) is provided on the outer wall of the filter bin (4), and the sealing frame (25) on the cover plate (24) is engaged with the frame groove (26) and fixed by bolts.

8. The auxiliary heat dissipation device for a hydrogen fuel cell vehicle according to claim 4, characterized in that: The adjustment assembly comprises a limit frame seat (27), a rotating shaft (28), a rack (29), a gear (30) and an adjustment seat (31); the limit frame seat (27) is located at the top of the filter bin (4); one side of the limit frame seat (27) limits the adjustment plate (17); a rack (29) is provided on one side of the adjustment plate (17) passing through the limit frame seat (27); a rotating shaft (28) is rotatably installed in the limit frame seat (27); a gear (30) meshing with the rack (29) is fixed on the rotating shaft (28); and the other end of the rotating shaft (28) is fixedly connected to the adjustment seat (31) after rotating through the side wall of the limit frame seat (27).

9. The auxiliary heat dissipation device for a hydrogen fuel cell vehicle according to claim 1, characterized in that: The delivery assembly comprises a main pipe (32) and a delivery pump (33), wherein the main pipe (32) is symmetrically arranged on the top of the installation frame (1), and multiple groups of liquid inlet pipes (12) and liquid outlet pipes (13) on the radiator (3) all penetrate the installation frame (1) and are connected to their respective main pipes (32). A delivery pump (33) is provided on one side of the filter bin (4) and the water tank (5), and the delivery pump (33) is respectively connected to the two groups of main pipes (32).

10. A heat dissipation method for an auxiliary heat dissipation device of a hydrogen fuel cell vehicle according to any one of claims 1 to 9, characterized in that: The steps include: S1. The device is installed on the bottom of the vehicle body through the mounting frame (2), and water generated by the battery stack reaction and coolant of the cooling system are sent into the filter chamber (4) through the water inlet (20). After filtering by the filter plate (19), the recovered water and coolant are sent into the radiator (3) through the delivery pump (33); S2. When the vehicle body is moving, the wind flows through the radiator (3) to cool the liquid. Specifically, the coolant enters the liquid flow ring (10), wherein the diameters of the plurality of liquid flow rings (10) decrease from the outside to the inside, so that the liquid fills one liquid flow ring (10) and then enters another liquid flow ring (10) through the leveling pipe. The liquid flow rings (10) have different heights, thereby increasing the contact area between the liquid flow ring (10) and the air, thereby increasing the heat dissipation function of the liquid flow ring (10); S3. At the same time, a heat sink group (9) is inserted between the multiple groups of liquid flow rings (10), and heat conduction is performed through the contact between the heat sink and the liquid flow ring (10). At the same time, the arrangement of the heat sink group (9) further increases the contact area with the air, thereby further accelerating the heat dissipation rate of the liquid flow ring (10); S4. In order to further increase the heat dissipation capacity of the liquid flow ring (10), the device arranges the heat sink into a V shape, the angle of the inner side of the V-shaped heat sink (14) is 60°-80°, and the side wall of the V-shaped heat sink is also provided with a wave-shaped air groove (16). Compared with the traditional straight-plate design, the V-shaped structural design can increase the contact area with the liquid flow ring (10) and form more air channels. The design of the air groove (16) further increases the contact time between the air and the V-shaped heat sink (14), thereby greatly increasing the heat dissipation rate of the radiator (3) of the device. When used in conjunction with the cold zone mechanism of the vehicle itself, the long-term operation of the cooling system is greatly guaranteed; S5. The coolant that has been sufficiently cooled enters the water tank (5), and is then sent into the vehicle cooling system through the water outlet (7), thereby ensuring stable operation of the vehicle cooling system.

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