A hydrogen fuel cell assembly

Abstract

The present application relates to the field of hydrogen fuel cell, in particular to a kind of hydrogen fuel cell assembly, including fuel cell stack body, two cross beams are fixed between the two side end plates of fuel cell stack body, two cross beams are arranged in the lower side position of end plate, and the slide plate is jointly provided below the lower portion of two cross beams, slide plate is close to end plate setting, the accommodation slot of clamping cross beam is opened in the upper surface of slide plate, and the lower surface of slide plate is slidably connected with guide rail;The cooperation of fuel cell stack body and buffer bag is set, the inflation of buffer bag is realized by the buffer movement stroke of fuel cell stack body, when buffer spring is extruded or pulled to move buffer, the soft protection wall formed by the inflation of buffer bag is used for protection, avoid rigid collision between fuel cell stack body and vehicle body, reduce the impact effect on vehicle body, to realize the protection to vehicle body and fuel cell stack body.

Description

Technical Field

[0001] This invention relates to the field of hydrogen fuel cells, specifically a hydrogen fuel cell assembly. Background Technology

[0002] Hydrogen fuel cells are power generation devices that directly convert the chemical energy of hydrogen and oxygen into electrical energy. Currently, hydrogen fuel cells are widely used in vehicles, spacecraft, data centers, and warehousing. In vehicle applications, because hydrogen fuel cells are composed of multiple material cores, hydrogen fuel cell cars are more than 200 kilograms heavier than comparable internal combustion engine vehicles. However, the fuel cell uses hydrogen and oxygen as fuel, and the byproduct is clean water. It does not produce carbon monoxide or carbon dioxide, nor does it emit sulfur or particulate matter. Therefore, hydrogen fuel cell vehicles are truly zero-emission and zero-pollution vehicles.

[0003] Generally, hydrogen fuel cell vehicles are more than 200 kilograms heavier than similar internal combustion engine vehicles. This also results in hydrogen fuel cell cars having greater inertia. During acceleration and deceleration, the hydrogen fuel cell is prone to shifting inside the vehicle and colliding hard with the internal frame, causing damage. In severe cases, the frame can be squeezed and deformed significantly, colliding with the gas storage tank inside the vehicle and causing hydrogen leakage, which can lead to serious vehicle safety accidents.

[0004] Therefore, a hydrogen fuel cell assembly that can reduce the impact effect of hydrogen fuel cells on the vehicle frame is proposed to address the above problems. Summary of the Invention

[0005] In order to overcome the shortcomings of the prior art, at least one technical problem raised in the background art is solved.

[0006] The technical solution adopted by the present invention to solve its technical problem is as follows: The present invention provides a hydrogen fuel cell assembly, including a fuel cell stack body, two crossbeams fixed between the two end plates of the fuel cell stack body, the two crossbeams being located on the lower side of the end plates, and a sliding plate being provided below the ends of the two crossbeams. The sliding plate is located close to the end plates, and a clearance groove for engaging the crossbeams is opened on the upper surface of the sliding plate. A guide rail is slidably connected to the lower surface of the sliding plate.

[0007] Multiple connecting blocks are fixed to the lower surface of each crossbeam, and a crossbar is fixed between two adjacent connecting blocks. The crossbar is set perpendicular to the length of the crossbeam, and piston cylinders are provided at both ends of the crossbar.

[0008] Each piston cylinder contains a piston, the end face of which is fixed to the end of a crossbar, and the piston cylinder is connected to a gas pipe, the end of which is connected to a buffer bladder, which is located on both sides of the fuel cell stack body.

[0009] Preferably, the long screws on both sides of the fuel cell stack body are provided with multiple elastic plates, each elastic plate is rotatably connected to the long screws by a torsion spring, and a buffer bag is fixedly connected to the multiple elastic plates on the same side of the fuel cell stack body.

[0010] Preferably, the piston cylinder has a first chamber and a second chamber with variable volumes. The first chamber and the second chamber are separated by a piston. The first chamber is located away from the fuel cell stack body, and the second chamber is located close to the fuel cell stack body. Both the first chamber and the second chamber are connected to air pipes. The air pipe connected to the first chamber is connected to a buffer bladder near the first chamber, and the air pipe connected to the second chamber is connected to a buffer bladder near the second chamber.

[0011] Preferably, a toggle switch is provided at the middle position of the inner sidewall of each guide rail. The toggle switch is used to control the solenoid valve on the fuel cell stack body. The solenoid valve is used to control the opening and closing of the hydrogen and oxygen supply pipelines. The contact head at the end of the toggle switch extends between two adjacent connecting blocks.

[0012] Preferably, each piston cylinder is fixedly connected to a conductive rod, the conductive rod is insulated from the piston cylinder, and the end of the conductive rod extends vertically downward into the first cavity. Each conductive rod is fixedly connected to a conductive ring at its end, and a cylindrical conductive body is inserted into the conductive ring. The conductive body extends along the piston cylinder axis to the outside of the piston cylinder, and the conductive body is insulated from the piston cylinder.

[0013] Each of the crossbars is fixed to a top rod at its end, with the top rod facing the conductive ring.

[0014] Preferably, a sliding hole is formed on the end face of the conductor; the end of the top rod is provided with an insulating rod adapted to the sliding hole, and the end of the insulating rod is inserted into the sliding hole.

[0015] Preferably, each of the guide rails is provided with a slider, which is located near the end of the guide rail. A push plate is fixedly connected to the slider, and the push plate extends in the direction of the end of the guide rail. An auxiliary plate is fixedly connected between the ends of the two push plates on the same side of the fuel cell stack body, and the auxiliary plate is insulated and fixedly connected to the conductor.

[0016] Preferably, each of the slide plates has a groove, and a long screw on the underside of the fuel cell stack body is embedded in the groove.

[0017] Preferably, each of the second cavities is provided with a reset spring, which is sleeved on the crossbar, with one end of the reset spring fixed to the piston end face and the other end of the reset spring fixed to the inner end face of the piston cylinder.

[0018] Preferably, the long screw at the bottom of the fuel cell stack body is respectively installed through the ends of the crossbeam.

[0019] The advantages of this invention are:

[0020] 1. In this invention, the combination of the fuel cell stack body and the buffer bladder utilizes the buffer movement stroke of the fuel cell stack body to achieve the inflation and expansion of the buffer bladder. When the buffer spring is squeezed or pulled to move and buffer, the soft protective wall formed by the expansion of the buffer bladder provides protection, avoiding hard collision between the fuel cell stack body and the vehicle body, reducing the impact effect on the vehicle body, thereby achieving protection for both the vehicle body and the fuel cell stack body.

[0021] 2. In this invention, a power-off structure is provided. The crossbar pushes the top rod, which moves into the conductive ring and pushes out the conductor inside the conductive ring. At this time, the electrical connection between the conductor and the conductive ring is broken, and the power module connected to the conductor and the conductive ring is also de-energized, reducing the risk of electric shock. Attached Figure Description

[0022] Figure 1 This is a first-view perspective perspective view of the hydrogen fuel cell assembly in this invention;

[0023] Figure 2 This is a second-view perspective perspective view of the hydrogen fuel cell assembly in this invention;

[0024] Figure 3 This is a front view of the hydrogen fuel cell assembly in this invention;

[0025] Figure 4 This is a top view of the hydrogen fuel cell assembly in this invention;

[0026] Figure 5 This is a perspective view of the cooperation between the buffer bladder and the elastic plate in this invention;

[0027] Figure 6 This is a perspective view of the cooperation between the sliding plate and the long screw in this invention;

[0028] Figure 7 This is a perspective view of the cooperation between the sliding plate and the guide rail in this invention;

[0029] Figure 8 This is a perspective view of the piston cylinder in this invention;

[0030] Figure 9 This is a cross-sectional view of the piston cylinder in this invention;

[0031] Figure 10 This is a perspective view of the crossbar in this invention;

[0032] Figure 11 This is a perspective view of the interaction between the conductor and the conductive ring in this invention;

[0033] Figure 12 This is a perspective view of the fit between the top rod and the cross rod in this invention.

[0034] In the diagram: 1. Fuel cell stack body; 2. Crossbeam; 3. Slide plate; 4. Clearance groove; 5. Guide rail; 6. Connecting block; 7. Crossbar; 8. Piston cylinder; 9. Piston; 10. Gas pipe; 11. Buffer bladder; 12. Long screw; 13. Elastic plate; 14. No. 1 chamber; 15. No. 2 chamber; 16. Toggle switch; 17. Solenoid valve; 18. Pipeline; 19. Conductive rod; 20. Conductive ring; 21. Conductor; 22. Push rod; 23. Sliding hole; 24. Insulating rod; 25. Push plate; 26. Auxiliary plate; 27. Groove; 28. Return spring. Detailed Implementation

[0035] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0036] Reference Figure 1 - Figure 9 A hydrogen fuel cell assembly includes a fuel cell stack body 1, two crossbeams 2 fixed between two end plates on both sides of the fuel cell stack body 1, the two crossbeams 2 being located on the lower side of the end plates, and a sliding plate 3 being provided below the ends of the two crossbeams 2, the sliding plate 3 being located close to the end plates, a clearance groove 4 for engaging the crossbeams 2 being opened on the upper surface of the sliding plate 3, and a guide rail 5 being slidably connected to the lower surface of the sliding plate 3.

[0037] Multiple connecting blocks 6 are fixed to the lower surface of each crossbeam 2. A crossbar 7 is fixed between two adjacent connecting blocks 6. The crossbar 7 is set perpendicular to the length of the crossbeam 2. Piston cylinders 8 are provided at both ends of the crossbar 7.

[0038] Each piston cylinder 8 is provided with a piston 9. The end face of the piston 9 is fixed to the end of the crossbar 7, and the piston cylinder 8 is connected to an air pipe 10. The end of the air pipe 10 is connected to a buffer bladder 11. The buffer bladder 11 is arranged on both sides of the fuel cell stack body 1.

[0039] In this embodiment, the designed hydrogen fuel cell assembly is mainly used in special vehicles with relatively slow driving speeds, such as some sightseeing vehicles, unmanned delivery vehicles, or automated guided vehicles. Because the hydrogen fuel cell assembly has a large mass, it is necessary to control and reduce the vehicle speed to reduce the risk of collision.

[0040] Two guide rails 5 are set below the fuel cell stack body 1 along the front and back direction of the vehicle. When the vehicle accelerates or decelerates, the fuel cell stack body 1 can move back and forth along the guide rails 5. During the movement of the fuel cell stack body 1, the fuel cell stack body 1 drives the connecting block 6 to move through the crossbeam 2. The connecting block 6 will push or pull the crossbar 7 to move. The crossbar 7 drives the piston 9 to move inside the piston cylinder 8.

[0041] When the vehicle decelerates, the fuel cell stack body 1, under inertia, pushes the slide plate 3 forward along the guide rail 5, and at the same time drives the crossbar 7 to move into the piston cylinder 8 on the front side. The crossbar 7 drives the piston 9 to move, and squeezes the gas in the piston cylinder 8 into the air pipe 10, and injects it into the buffer bladder 11 on the front side of the fuel cell stack body 1 along the air pipe 10. This causes the buffer bladder 11 to expand and increase in volume, forming a soft buffer protection wall between the vehicle frame and the fuel cell stack body 1, preventing the fuel cell stack body 1 from having a hard collision with the vehicle body.

[0042] Similarly, when the vehicle accelerates, the fuel cell stack body 1, under inertia, pushes the slide plate 3 to move backward along the guide rail 5, and at the same time drives the crossbar 7 to move into the piston cylinder 8 on the rear side. The crossbar 7 drives the piston 9 to move, and squeezes the gas in the piston cylinder 8 into the air pipe 10, and injects it into the buffer bladder 11 on the rear side of the fuel cell stack body 1 along the air pipe 10. This causes the buffer bladder 11 to expand and increase in volume, forming a soft buffer protection wall between the vehicle frame and the fuel cell stack body 1, preventing the fuel cell stack body 1 from having a hard collision with the vehicle body.

[0043] The part of the sliding plate 3 that is slidably connected to the guide rail 5 is connected to a buffer spring. When the sliding plate 3 moves within the guide rail 5, it pulls or squeezes the buffer spring. The buffer spring can slow down the movement speed of the fuel cell stack body 1 on the guide rail 5. At the same time, when the vehicle maintains a constant speed, the buffer spring can make the fuel cell stack body 1 quickly return to the initial position, so that heat dissipation space is left between the fuel cell stack body 1 and the vehicle body. If the fuel cell stack body 1 is attached to a certain position in the vehicle body for a long time, it will cause the local temperature of the fuel cell stack body 1 to rise, which will also affect the stable operation of the fuel cell stack body 1.

[0044] In this embodiment, in order to enable the buffer bladder 11 to be rapidly injected with gas and expand, some air tubes 10 with larger diameters are used as much as possible to ensure that the gas can be rapidly injected into the buffer bladder 11. At the same time, considering the strength of the buffer bladder 11, the buffer bladder 11 is made of the same material as the fire-fighting lifting air cushion, which has high explosion-proof performance.

[0045] The combination of the fuel cell stack body 1 and the buffer bladder 11 utilizes the buffer movement stroke of the fuel cell stack body 1 to inflate the buffer bladder 11. When the buffer spring is squeezed or pulled to move and buffer, the soft protective wall formed by the expansion of the buffer bladder 11 provides protection, preventing the fuel cell stack body 1 from having a hard collision with the vehicle body, reducing the impact effect on the vehicle body, and thus achieving protection for both the vehicle body and the fuel cell stack body 1.

[0046] Reference Figure 1 - Figure 5The fuel cell stack body 1 has multiple elastic plates 13 on the long screws 12 on both sides. Each elastic plate 13 is rotatably connected to the long screw 12 by a torsion spring, and a buffer bag 11 is fixedly connected to the multiple elastic plates 13 on the same side of the fuel cell stack body 1.

[0047] The main purpose of the elastic plate 13 is to isolate the buffer bag 11 from the fuel cell stack body 1, retain the air circulation space, ensure that the outer surface of the fuel cell stack body 1 has heat dissipation space, and keep the fuel cell stack body 1 in a stable operating state. The elastic plate 13 is rotatably connected to the long screw 12 through the torsion spring, so that the distance between the upper and lower positions of the buffer bag 11 and the outer surface of the fuel cell stack body 1 is the same, and avoid the upper or lower edge of the buffer bag 11 from getting close to the fuel cell stack body 1, causing local heating of the fuel cell stack body 1.

[0048] The secondary purpose of the elastic plate 13 is to use its own elasticity to assist the buffer bag 11 in buffering and protecting the fuel cell stack body 1.

[0049] Reference Figure 1 - Figure 10 The piston cylinder 8 has a variable volume first chamber 14 and second chamber 15 inside. The first chamber 14 and second chamber 15 are separated by a piston 9. The first chamber 14 is located away from the fuel cell stack body 1, and the second chamber 15 is located close to the fuel cell stack body 1. Both the first chamber 14 and the second chamber 15 are connected to air pipes 10. The air pipe 10 connected to the first chamber 14 is connected to the buffer bladder 11 close to the first chamber 14, and the air pipe 10 connected to the second chamber 15 is connected to the buffer bladder 11 close to the second chamber 15.

[0050] The outer surface of the crossbar 7 is slidably connected to the end face of the piston cylinder 8 to prevent gas in the second chamber 15 from leaking from the connection between the crossbar 7 and the piston cylinder 8 when it is compressed.

[0051] When the vehicle decelerates, the fuel cell stack body 1, under inertia, pushes the slide plate 3 forward along the guide rail 5, and at the same time drives the crossbar 7 to move into the piston cylinder 8 on the front side. The crossbar 7 drives the piston 9 to move. The piston 9 at the front squeezes the gas in the first chamber 14 and squeezes the gas into the buffer bladder 11 on the front side of the fuel cell stack body 1. At the same time, the piston 9 at the rear squeezes the gas in the second chamber 15 and squeezes the gas into the buffer bladder 11 on the front side of the fuel cell stack body 1 through the air pipe 10. The gas in the first chamber 14 in the piston cylinder 8 on the front side of the fuel cell stack body 1 and the gas in the second chamber 15 in the piston cylinder 8 on the rear side of the fuel cell stack body 1 are injected into the buffer bladder 11 on the front side of the fuel cell stack body 1. This allows more gas to be injected into the buffer bladder 11 on the front side of the fuel cell stack body 1, increasing the internal air pressure of the buffer bladder 11 and improving the buffering and protection effect of the fuel cell stack body 1.

[0052] Similarly, when the vehicle accelerates, the gas in the second chamber 15 of the piston cylinder 8 on the front side of the fuel cell stack body 1 and the gas in the first chamber 14 of the piston cylinder 8 on the rear side of the fuel cell stack body 1 are injected into the buffer bladder 11 on the rear side of the fuel cell stack body 1. This results in a larger amount of gas being injected into the buffer bladder 11 on the rear side of the fuel cell stack body 1, increasing the internal air pressure of the buffer bladder 11 and improving the effect of buffering and protecting the fuel cell stack body 1.

[0053] Reference Figure 1 - Figure 7 Each guide rail 5 has a toggle switch 16 located in the middle of its inner sidewall. The toggle switch 16 is used to control the solenoid valve 17 on the fuel cell stack body 1. The solenoid valve 17 is used to control the opening and closing of the hydrogen and oxygen supply pipelines 18. The contact head at the end of the toggle switch 16 extends between two adjacent connecting blocks 6.

[0054] When a vehicle is involved in a traffic accident involving rapid acceleration or deceleration, there is a possibility of separation between the fuel cell stack body 1 and the vehicle body. At this time, the offset movement of the fuel cell stack body 1 on the guide rail 5 has exceeded its safe range. In order to ensure the subsequent safety of the vehicle body, the fuel cell stack body 1 is shut off, that is, the supply of hydrogen and oxygen to the fuel cell stack body 1 is stopped. When the connecting block 6 is pressed to touch the contact head of the toggle switch 16, it means that the offset movement of the fuel cell stack body 1 on the guide rail 5 has exceeded its safe range. The toggle switch 16 is triggered, and the solenoid valve 17 is closed through the vehicle safety system, and the supply lines of hydrogen and oxygen 18 are shut off, thereby further reducing the risk of traffic accidents.

[0055] Reference Figure 1 - Figure 12Each piston cylinder 8 is fixedly connected to a conductive rod 19, which is insulated from the piston cylinder 8. The end of the conductive rod 19 extends vertically downward into the first cavity 14. A conductive ring 20 is fixedly connected to the end of each conductive rod 19. A cylindrical conductive body 21 is inserted into the conductive ring 20. The conductive body 21 extends along the axis of the piston cylinder 8 to the outside of the piston cylinder 8 and is insulated from the piston cylinder 8.

[0056] Each of the crossbars 7 is fixedly connected to a top rod 22 at its end, and the top rod 22 is opposite to the conductive ring 20;

[0057] When the offset movement of the fuel cell stack body 1 on the guide rail 5 exceeds its safe range, the supply of hydrogen and oxygen inside the fuel cell stack body 1 stops. However, there is still residual electrical energy inside the fuel cell stack body 1. For further safety considerations, a power-off structure is set up. The crossbar 7 pushes the push rod 22, which moves into the conductive ring 20 and pushes out the conductor 21 inside the conductive ring 20. At this time, the electrical connection between the conductor 21 and the conductive ring 20 is broken, and the power module connected to the conductor 21 and the conductive ring 20 is also de-energized, reducing the risk of electric shock. The conductor 21 slides through the piston cylinder 8 to ensure the gas sealing inside the piston cylinder 8.

[0058] During subsequent maintenance, the conductor 21 is pushed into cavity 14, and the end of the conductor 21 is inserted into the conductive ring 20 again, thus achieving electrical connection between the conductor 21 and the conductive ring 20.

[0059] Reference Figure 1 - Figure 12 The conductor 21 has a sliding hole 23 on its end face; the top rod 22 has an insulating rod 24 adapted to the sliding hole 23 at its end, and the end of the insulating rod 24 is inserted into the sliding hole 23.

[0060] In this embodiment, a telescopic hole is provided at the end of the push rod 22, and one end of the insulating rod 24 is slidably connected in the telescopic hole through a compression spring, while the other end of the insulating rod 24 is inserted in the sliding hole 23, which serves to guide the push rod 22 to move linearly, so as to prevent the end of the push rod 22 from hitting the conductive ring 20 and causing compression damage to the conductive ring 20, and also to achieve the purpose of power cut-off.

[0061] Reference Figure 1 - Figure 12 Each of the guide rails 5 is provided with a slider, which is located near the end of the guide rail 5. A push plate 25 is fixedly connected to the slider, and the push plate 25 extends in the direction of the end of the guide rail 5. An auxiliary plate 26 is fixedly connected between the ends of the two push plates 25 on the same side of the fuel cell stack body 1. The auxiliary plate 26 is insulated and fixedly connected to the conductor 21.

[0062] When the offset movement of the fuel cell stack body 1 on the guide rail 5 exceeds its safe range, the end of the slide plate 3 will press against the slider. The slider will push the auxiliary plate 26 away from the fuel cell stack body 1 through the push plate 25. The auxiliary plate 26 will then pull the conductor 21, pulling the conductor 21 out of the piston cylinder 8 and pulling the conductor 21 off the conductive ring 20. It also assists the push rod 22 in pushing the conductor 21 out, ensuring the success of power disconnection.

[0063] Reference Figure 1 - Figure 7 Each of the slide plates 3 has a groove 27, and the long screw 12 on the lower side of the fuel cell stack body 1 is embedded in the groove 27;

[0064] The long screw 12 on the lower side of the fuel cell stack body 1 is embedded in the groove 27 on the slide plate 3, which improves the integrity of the fuel cell stack body 1 and the slide plate 3 and improves the stability of the fuel cell stack body 1 during the movement along the guide rail 5.

[0065] Reference Figure 1 - Figure 9 Each of the second cavities 15 is provided with a reset spring 28, which is sleeved on the crossbar 7. One end of the reset spring 28 is fixed to the end face of the piston 9, and the other end of the reset spring 28 is fixed to the inner end face of the piston cylinder 8.

[0066] The reset spring 28 installed in the second cavity 15 is used for the rapid reset of the piston 9 in the piston cylinder 8 to prepare for the next acceleration or deceleration of the vehicle. It is also used to assist the buffer spring in resetting the fuel cell stack body 1, and can also slow down the movement speed of the fuel cell stack body 1 on the guide rail 5, thereby improving the stability of the fuel cell stack body 1.

[0067] Reference Figure 1 - Figure 6 The long screw 12 at the bottom of the fuel cell stack body 1 is provided to pass through the ends of the crossbeam 2 at both ends;

[0068] The two ends of the crossbeam 2 are fixed to the end plate of the fuel cell stack body 1 by long screws 12, which improves the overall relationship between the crossbeam 2 and the fuel cell stack body 1, as well as the supporting and protective effect of the crossbeam 2 on the fuel cell stack body 1. The crossbeam 2 can serve as a secondary protection for the fuel cell stack body 1, protecting the internal structure of the fuel cell stack body 1. At the same time, the slide plate 3 and the guide rail 5 also have the same function as the crossbeam 2, together protecting the exterior of the fuel cell stack body 1.

[0069] Working principle: Two guide rails 5 are set below the fuel cell stack body 1 along the front and back direction of the vehicle. When the vehicle accelerates or decelerates, the fuel cell stack body 1 can move back and forth along the guide rails 5. During the movement of the fuel cell stack body 1, the fuel cell stack body 1 drives the connecting block 6 to move through the crossbeam 2. The connecting block 6 will push or pull the crossbar 7 to move. The crossbar 7 drives the piston 9 to move inside the piston cylinder 8.

[0070] When the vehicle decelerates, the fuel cell stack body 1, under inertia, pushes the slide plate 3 forward along the guide rail 5, and at the same time drives the crossbar 7 to move into the piston cylinder 8 on the front side. The crossbar 7 drives the piston 9 to move, and squeezes the gas in the piston cylinder 8 into the air pipe 10, and injects it into the buffer bladder 11 on the front side of the fuel cell stack body 1 along the air pipe 10. This causes the buffer bladder 11 to expand and increase in volume, forming a soft buffer protection wall between the vehicle frame and the fuel cell stack body 1, preventing the fuel cell stack body 1 from having a hard collision with the vehicle body.

[0071] Similarly, when the vehicle accelerates, the fuel cell stack body 1, under inertia, pushes the slide plate 3 to move backward along the guide rail 5, and at the same time drives the crossbar 7 to move into the piston cylinder 8 on the rear side. The crossbar 7 drives the piston 9 to move, and squeezes the gas in the piston cylinder 8 into the air pipe 10, and injects it into the buffer bladder 11 on the rear side of the fuel cell stack body 1 along the air pipe 10. This causes the buffer bladder 11 to expand and increase in volume, forming a soft buffer protection wall between the vehicle frame and the fuel cell stack body 1, preventing the fuel cell stack body 1 from having a hard collision with the vehicle body.

[0072] The part of the sliding plate 3 that is slidably connected to the guide rail 5 is connected to a buffer spring. When the sliding plate 3 moves within the guide rail 5, it pulls or squeezes the buffer spring. The buffer spring can slow down the movement speed of the fuel cell stack body 1 on the guide rail 5. At the same time, when the vehicle maintains a constant speed, the buffer spring can make the fuel cell stack body 1 quickly return to the initial position, so that heat dissipation space is left between the fuel cell stack body 1 and the vehicle body. If the fuel cell stack body 1 is attached to a certain position in the vehicle body for a long time, it will cause the local temperature of the fuel cell stack body 1 to rise, which will also affect the stable operation of the fuel cell stack body 1.

[0073] In this embodiment, in order to enable the buffer bladder 11 to be rapidly injected with gas and expand, some air tubes 10 with larger diameters are used as much as possible to ensure that the gas can be rapidly injected into the buffer bladder 11. At the same time, considering the strength of the buffer bladder 11, the buffer bladder 11 is made of the same material as the fire-fighting lifting air cushion, which has high explosion-proof performance.

[0074] The combination of the fuel cell stack body 1 and the buffer bladder 11 utilizes the buffer movement stroke of the fuel cell stack body 1 to inflate the buffer bladder 11. When the buffer spring is squeezed or pulled to move and buffer, the soft protective wall formed by the expansion of the buffer bladder 11 provides protection, preventing the fuel cell stack body 1 from having a hard collision with the vehicle body, reducing the impact effect on the vehicle body, and thus achieving protection for both the vehicle body and the fuel cell stack body 1.

[0075] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A hydrogen fuel cell assembly characterized by: The utility model provides a fuel cell stack body, two cross beams are fixed between the both side end plates of fuel cell stack body, two cross beams are arranged in the downside position of end plate, and the common slide plate is equipped below the end of two cross beams, the slide plate is close to end plate setting, the upper surface of slide plate is equipped with the accommodation groove of joint cross beam, the lower surface of slide plate is connected with guide rail in sliding mode, The lower surface of each cross beam is fixed with a plurality of link blocks, a cross bar is fixed between adjacent two link blocks, the cross bar is arranged vertically to the length of cross beam, and the end of cross bar is provided with a piston cylinder; Each piston cylinder is provided with a piston, the end surface of piston is fixed with the end of cross bar, and a gas pipe is connected to the piston cylinder, the end of gas pipe is connected with a buffer bag, and the buffer bag is arranged on both sides of fuel cell stack body; The long screw on both sides of fuel cell stack body is provided with a plurality of elastic plates, each elastic plate is rotatably connected to the long screw through a torsion spring, and a plurality of elastic plates on the same side of fuel cell stack body are fixed with a buffer bag; The piston cylinder is provided with a variable volume first cavity and a second cavity, the first cavity and the second cavity are isolated by the piston, the first cavity is arranged away from the fuel cell stack body, the second cavity is arranged close to the fuel cell stack body, the first cavity and the second cavity are both connected with a gas pipe, the gas pipe connected with the first cavity is connected with the buffer bag close to the first cavity, and the gas pipe connected with the second cavity is connected with the buffer bag close to the second cavity.

2. A hydrogen fuel cell assembly according to claim 1, wherein: The inside wall of each guide rail is provided with a toggle switch at the middle position, the toggle switch is used for controlling the electromagnetic valve on the fuel cell stack body, the electromagnetic valve is used for controlling the opening and closing of the supply pipeline of hydrogen and oxygen, and the touch head at the end of the toggle switch extends to the space between adjacent two link blocks.

3. A hydrogen fuel cell assembly according to claim 1, wherein: Each piston cylinder is fixed with a conductive rod, the conductive rod is insulatedly connected to the piston cylinder, the end of the conductive rod extends vertically downward into the first cavity, the end of each conductive rod is fixed with a conductive ring, a cylindrical conductive body is inserted into the conductive ring, the conductive body extends to the outside of the piston cylinder along the axis of the piston cylinder, and the conductive body is insulatedly connected to the piston cylinder; The end of each cross bar is fixed with a jack rod, and the jack rod is opposite to the conductive ring.

4. A hydrogen fuel cell assembly according to claim 3, wherein: The end surface of the conductive body is provided with a sliding hole, and the end of the jack rod is provided with an insulating rod matched with the sliding hole, and the end of the insulating rod is inserted into the sliding hole.

5. A hydrogen fuel cell assembly according to claim 2, wherein: Each guide rail is provided with a sliding block, the sliding block is arranged close to the end of the guide rail, the sliding block is fixed with a push plate, the push plate extends to the end of the guide rail, and the ends of two push plates on the same side of the fuel cell stack body are fixed with an auxiliary plate, and the auxiliary plate is insulatedly fixed to the conductive body.

6. A hydrogen fuel cell assembly according to claim 1, wherein: Each slide plate is provided with a groove, and the long screw on the downside of the fuel cell stack body is embedded in the groove.

7. A hydrogen fuel cell assembly according to claim 1, wherein: Each second cavity is provided with a return spring, the return spring is sleeved on the cross bar, one end of the return spring is fixed to the end surface of the piston, and the other end of the return spring is fixed to the inner end surface of the piston cylinder.

8. A hydrogen fuel cell assembly according to claim 1, wherein: The long screw at the bottom of the fuel cell stack body penetrates through the end of the cross beam.

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