Hydrogen fuel cell all-terrain vehicle

Abstract

The invention discloses a hydrogen fuel cell all-terrain vehicle which comprises a vehicle frame, a power system, a power cell and a hydrogen fuel cell system, the hydrogen fuel cell system comprises a hydrogen fuel stack, a hydrogen fuel stack controller, a hydrogen fuel cell direct current transformer and a hydrogen storage device, and the hydrogen fuel stack is used for converting hydrogen into electric energy; the hydrogen storage device is used for supplying hydrogen to the hydrogen fuel stack, the hydrogen fuel stack controller is used for controlling the hydrogen fuel stack, the hydrogen fuel cell direct-current transformer is used for rectifying electric energy generated by the hydrogen fuel stack to supply power to the power system, and the hydrogen energy fuel cell system generates electric energy. Electric energy is transmitted to the power battery through the hydrogen fuel cell direct-current transformer, the power battery provides power for the vehicle through the power system, during starting, the response is rapid, almost no delay exists, jerking during gear shifting and engine vibration do not exist during driving, driving is smooth, no gasoline smell exists, and the driving comfort is qualitatively improved.

Description

Technical Field

[0001] The present invention relates to the technical field of new energy all-terrain vehicles, and in particular to a hydrogen fuel cell all-terrain vehicle. Background Art

[0002] An all-terrain vehicle is a vehicle that can travel on any terrain and can move freely on terrain where ordinary vehicles have difficulty maneuvering. This type of vehicle has multiple uses and is not restricted by road conditions.

[0003] Traditional fuel vehicles use the engine to convert the heat generated by gasoline combustion into power, which is then transmitted to the wheels through a series of mechanical transmission devices to drive the vehicle. This form of power has the following disadvantages:

[0004] 1. Environmental pollution: Traditional fuel vehicles use gasoline as vehicle power, which produces a large amount of harmful gases when gasoline burns, such as carbon monoxide, nitrogen oxides, particulate matter, etc., which have a huge impact on the environment. In addition, fuel vehicles rely on non-renewable energy such as oil. With the gradual depletion of oil resources, energy security has become a highly concerned issue.

[0005] 2. Noise pollution: The engine and exhaust system of fuel vehicles will produce noise pollution, which will interfere with the surrounding environment and residents' lives.

[0006] 3. Driving experience: There is a noticeable lag from refueling to vehicle starting in fuel vehicles. When driving, you will clearly feel the gear shifting and engine vibration, and there may even be a gasoline smell, which affects the driving comfort.

[0007] Pure electric vehicles use batteries to provide electricity to drive the motor and achieve vehicle travel. This form of power has the following problems:

[0008] 1. Long energy replenishment time: Pure electric vehicles take a long time to charge, and even using fast charging, it still takes a certain amount of time.

[0009] 2. Greatly affected by temperature: In cold weather conditions, the performance of the battery will decline, resulting in a shorter driving range.

[0010] Therefore, there is an urgent need to design an electric all-terrain vehicle that uses hydrogen fuel cells as its power source, has a quick response, no gear shifting and engine vibration during driving, runs smoothly, has low noise, and has no gasoline smell, thus qualitatively improving driving comfort. Summary of the invention

[0011] In view of this, the present invention provides a hydrogen fuel cell all-terrain vehicle, which uses a hydrogen fuel cell as a power source. When starting, it responds quickly with almost no delay. When driving, there is no setback when shifting gears and engine vibration. The driving is smooth and there is no gasoline smell, which qualitatively improves the driving comfort.

[0012] The present invention provides a hydrogen fuel cell all-terrain vehicle that adopts the following technical solution:

[0013] A hydrogen fuel cell all-terrain vehicle comprises a frame, a power system for driving the vehicle, a power battery and a hydrogen fuel cell system for charging the power battery, wherein the hydrogen fuel cell system comprises a hydrogen fuel cell stack, a hydrogen fuel cell stack controller, a hydrogen fuel cell DC transformer and a hydrogen storage device, wherein the hydrogen fuel cell stack is used to convert hydrogen into electrical energy, the hydrogen storage device is used to provide hydrogen supply to the hydrogen fuel cell stack, the hydrogen fuel cell stack controller is used to control the hydrogen fuel cell stack, and the hydrogen fuel cell DC transformer is used to rectify the electrical energy generated by the hydrogen fuel cell stack for powering the power system.

[0014] Optionally, the hydrogen fuel cell stack is arranged at the front end of a frame, a crossbeam is arranged on the frame, the bottom of the hydrogen fuel cell stack is fixed to the crossbeam by a fixing part, a bracket is arranged on the top of the hydrogen fuel cell stack, a connecting part is arranged on the bracket, and the connecting part is used to fix the bracket to the frame for a firm installation so that the hydrogen fuel cell stack is evenly stressed as a whole.

[0015] Optionally, the hydrogen fuel cell DC transformer is arranged above the hydrogen fuel cell stack, and the hydrogen fuel cell stack controller is arranged below the hydrogen fuel cell stack and in front of the power battery. This can ensure waterproofness when the entire vehicle is wading and facilitate wiring harness output, shorten the length of the high-voltage wiring harness, save costs, and facilitate later maintenance.

[0016] Optionally, it also includes an on-board DC transformer. The hydrogen fuel cell stack is provided with a heat dissipation system for dissipating heat from the hydrogen fuel cell stack. The on-board DC transformer is used to power on-board electronic equipment. The on-board DC transformer is arranged on the frame to facilitate wiring harness output, shorten the length of the high-voltage wiring harness, save costs, and facilitate later maintenance.

[0017] Optionally, a clamping device is arranged between the heat dissipation system and the fan bracket of the membrane electrode of the hydrogen fuel cell stack, and the clamping device includes a left fixing member and a right fixing member, and the left fixing member is connected to the right fixing member for clamping the membrane electrode and the fan bracket, and an adjusting member for adjusting the distance between the left fixing member and the right fixing member is arranged between the left fixing member and the right fixing member.

[0018] Optionally, the hydrogen storage device includes a hydrogen storage tank, and a rear shelf is arranged on the frame. The hydrogen storage tank is arranged on the rear shelf and fixed to the rear shelf by a fixing belt. The hydrogen storage tank is arranged on the rear shelf and fixed to the rear shelf by a fixing belt, so that the space on the shelf is fully utilized, the structure of the whole vehicle is more compact, and the hydrogen storage tank can be ensured to be firmly fixed on the rear shelf. After being fixed, it can play a buffering and protective role for the hydrogen storage tank.

[0019] Optionally, a rear bumper is provided at the rear of the frame, and the rear rack is provided between the frame and the rear bumper. The rear bumper can protect the hydrogen storage tank when a vehicle rear-ends, thereby reducing damage caused by the collision.

[0020] Optionally, the power system includes a front electric drive and a front electric drive controller for controlling the front electric drive, the front electric drive is arranged on the front side of the frame, and the front electric drive controller is arranged in the middle of the frame and in front of the power battery. The power system also includes a rear electric drive and a rear electric drive controller for controlling the rear electric drive, and the rear electric drive is arranged on the frame behind the power battery and in front of the rear wheels.

[0021] Optionally, the power battery is arranged at the bottom of the frame and between the front machine controller and the rear electric drive controller. The on-board charger for charging the power battery is arranged in the electrical box of the frame. The on-board charging port of the on-board charger is arranged at the front end of the frame. The power battery is large in size and is arranged at the bottom of the vehicle to facilitate the outlet of the high-voltage wire harness, shorten the length of the high-voltage wire harness, and evenly distribute the weight of the vehicle on the frame. It can effectively balance the load of the front and rear axles of the vehicle, reduce the vibration and noise of the vehicle during driving, and improve the driving stability and driving comfort of the vehicle.

[0022] Optionally, an air guide plate is provided on the frame, and the air guide plate has openable and closable air outlets. When the air outlets of the air guide plate are closed, the hot air can be separated from the power battery, and the flow direction of the hot air can be controlled as needed. When the power battery does not need to be heated, the air guide plate is closed to separate the hot air from the power battery. When the power battery needs to be heated, the air outlet is opened, and while the hot air flows from the rear of the vehicle, a part of the hot air flows to the power battery through the air outlet, heating the power battery, and raising the temperature of the power battery.

[0023] In summary, the present invention includes at least one of the following beneficial technical effects: the hydrogen storage device transports hydrogen to the hydrogen fuel cell system, the hydrogen energy fuel cell system generates electrical energy, the electrical energy is transported to the power battery through the hydrogen fuel cell DC transformer, that is, the power battery is charged, and the power battery provides power to the vehicle through the power system. When starting, the response is quick and there is almost no delay. There is no setback when shifting gears and engine vibration during driving. The driving is smooth and there is no gasoline smell. The driving comfort is qualitatively improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0025] Figure 1 is a schematic diagram of the overall structure of an embodiment of the present invention;

[0026] Figure 2 is a side view of an embodiment of the present invention;

[0027] Figure 3 The connection structure between the rear shelf and the hydrogen storage tank of the embodiment of the present invention is shown in FIG. Figure 1 ;

[0028] Figure 4 The connection structure between the rear shelf and the hydrogen storage tank of the embodiment of the present invention is shown in FIG. Figure 2 ;

[0029] Figure 5 The schematic diagram of the connection structure between the hydrogen fuel cell stack and the bracket according to the embodiment of the present invention is Figure 1 ;

[0030] Figure 6 The schematic diagram of the connection structure between the hydrogen fuel cell stack and the bracket according to the embodiment of the present invention is Figure 2 ;

[0031] Figure 7 It is a partial structural schematic diagram of an embodiment of the present invention;

[0032] Figure 8 is a schematic diagram of the structure of an air guide plate according to an embodiment of the present invention;

[0033] Fig. 9 is a schematic structural diagram of a clamping device according to an embodiment of the present invention;

[0034] Fig.10 It is a schematic diagram of the connection structure of the clamping device, the fan bracket and the membrane electrode according to an embodiment of the present invention.

[0035] Explanation of the reference numerals: 1. front electric drive; 2. on-board charging port; 3. battery; 4. instrument; 5. hydrogen fuel cell DC transformer; 6. rear electric drive; 7. rear electric drive controller; 8. hydrogen storage tank; 9. on-board DC transformer; 10. power battery; 11. pad bracket; 12. hydrogen fuel cell stack controller; 13. hydrogen fuel cell stack; 14. front electric drive controller; 15. electrical box; 16. rear bumper; 17. air duct; 18. air guide plate; 19. frame; 20. rear shelf; 21. bracket; 22. laminated pad; 23. laminated fixing belt; 24. crossbeam; 25. air outlet; 26. guide plate; 27. tilting plate; 28. left fixing block; 29. ​​right fixing block; 30. screw; 31. fan bracket; 32. membrane electrode. DETAILED DESCRIPTION

[0036] The following describes the embodiments of the present invention through specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present invention.

[0037] The following is combined with Figure 1-10 The present invention is described in further detail.

[0038] An embodiment of the invention discloses a hydrogen fuel cell all-terrain vehicle.

[0039] Reference Figure 1-Figure 10 A hydrogen fuel cell all-terrain vehicle includes a frame 19, a power system for driving the vehicle, a power battery 10, and a hydrogen fuel cell system for charging the power battery 10. The hydrogen fuel cell system includes a hydrogen fuel cell stack 13, a hydrogen fuel cell stack controller 12, a hydrogen fuel cell DC transformer 5, and a hydrogen storage device. The hydrogen fuel cell stack 13 is used to convert hydrogen into electrical energy. The hydrogen storage device is used to provide hydrogen supply to the hydrogen fuel cell stack 13. The hydrogen fuel cell stack controller 12 is used to control the hydrogen fuel cell stack 13. The hydrogen fuel cell DC transformer 5 is used to rectify the electrical energy generated by the hydrogen fuel cell stack 13 for powering the power system. The hydrogen storage device transports hydrogen to the hydrogen fuel cell system, and the hydrogen energy fuel cell system generates electrical energy. The electrical energy is transported to the power battery 10 through the hydrogen fuel cell DC transformer 5, that is, the power battery 10 is charged. The power battery 10 provides power to the vehicle through the power system. When starting, the response is fast and there is almost no delay. There is no setback and engine vibration when shifting gears during driving. The driving is smooth, and there is no gasoline smell. The driving comfort is qualitatively improved.

[0040] In this embodiment, the frame 19 adopts a 72V voltage platform and integrates a hydrogen fuel cell system. Through the reasonable zoning design of the whole vehicle, the whole vehicle structure, electric drive assembly, battery pack, fuel controller system and fuel cell system layout are completed, and the hydrogen fuel cell vehicle development, electric drive performance, extended range control and other functional verifications are realized, achieving the goals of zero pollution, low noise, high efficiency, and excellent driving experience.

[0041] A hydrogen fuel cell system is a power generation device that directly converts the chemical energy of hydrogen and oxygen into electrical energy. It has the advantages of being clean, low-carbon, quick to start and stop, and noiseless. Among them, the hydrogen fuel cell stack 13 is the core of the hydrogen fuel cell system and is responsible for the occurrence of electrochemical reactions. The fuel cell stack is composed of a plurality of single cells stacked in series. Each single cell includes a bipolar plate and a membrane electrode 32 (MEA), which are assembled through a specific process to form a proton exchange membrane fuel cell stack. The membrane electrode 32 includes a proton exchange membrane, a catalyst, and a gas diffusion layer. It is the place where the electrochemical reaction occurs and determines the performance, life, and cost of the stack. The bipolar plate is responsible for conducting electrons, distributing the reaction gas, and taking away the generated water. It also serves as an isolation and connection component between cells.

[0042] When using hydrogen fuel, the refueling time is relatively short, similar to the refueling process of a fuel vehicle, which can greatly shorten the vehicle's refueling time.

[0043] In this embodiment, the hydrogen fuel cell stack 13 is arranged at the front end of the frame 19, and a crossbeam 24 is arranged on the frame 19. The bottom of the hydrogen fuel cell stack 13 is fixed to the crossbeam 24 by a fixing member, and a bracket 21 is arranged on the top of the hydrogen fuel cell stack 13. A connecting member is arranged on the bracket 21, and the connecting member is used to fix the bracket 21 to the frame 19. Specifically, two crossbeams 24 are arranged in the front part of the frame 19, and the two crossbeams 24 are arranged along the width direction of the frame 19. The fixing member adopts bolts, and the bracket 21 is provided with a mounting hole for installing the bolt. The mounting hole is a strip hole, and the manufacturing and installation errors can be adjusted to ensure a stable installation. The hydrogen fuel cell stack 13 is arranged at the front position of the frame 19, and the bottom of the hydrogen fuel cell stack 13 is fixed to the crossbeam 24 by bolts, and the top is connected to the frame 19 by bolts through the bracket 21. The fixing position is evenly distributed up and down, so that the fuel cell is evenly stressed as a whole. By fixing the cross beam 24 and the bracket 21 to the frame 19 at six points, the frame 19 can bear the load more evenly to cope with the intense road vibration feedback of the all-terrain vehicle.

[0044] In this embodiment, the hydrogen fuel cell DC transformer 5 is arranged above the hydrogen fuel cell stack 13. The hydrogen fuel cell DC transformer 5 is arranged above the hydrogen fuel cell, which can improve the waterproofness of the whole vehicle when wading, and make the layout of the whole hydrogen fuel cell system more compact and orderly, which is convenient for installation and maintenance.

[0045] In this embodiment, the hydrogen fuel cell stack controller 12 adopts the existing design, and the hydrogen fuel cell stack controller 12 is used to monitor and control the operating status of the hydrogen fuel cell stack 13 to ensure the coordinated operation of each subsystem. The hydrogen fuel cell stack controller 12 is arranged below the hydrogen fuel cell stack 13 and in front of the power battery 10, shortening the connection line between the hydrogen fuel cell stack 13, facilitating the wiring harness outlet, shortening the length of the high-voltage harness, and helping to reduce resistance loss, reduce energy loss, improve the overall operating efficiency of the system, and help reduce the weight of the entire system. The wiring harness material is reduced and the manufacturing cost is also reduced accordingly, which is also convenient for later maintenance, making the layout of the hydrogen fuel cell system more compact and orderly, helping to reduce the occupied space and improve space utilization.

[0046] It also includes an on-board DC transformer 9. The hydrogen fuel cell stack 13 is provided with a heat dissipation system for dissipating heat from the hydrogen fuel cell stack 13. The on-board DC transformer 9 is used to power on-board electronic equipment. The on-board DC transformer 9 converts the high-voltage DC power output by the power battery 10 into low-voltage DC power to meet the power supply requirements of the on-board electronic equipment. In this embodiment, the on-board DC transformer 9 is arranged on the frame 19. Specifically, the on-board DC transformer 9 is arranged on the left or right side of the frame 19. The DC transformer is reasonably arranged on one side of the frame 19, which can more effectively utilize the space and improve the space utilization rate. The on-board DC transformer 9 is arranged close to the relevant electrical system or on-board electronic equipment, which is convenient for the wiring harness to be output, which helps to shorten the length of the high-voltage wiring harness, reduce line losses, and facilitate assembly and maintenance. The hydrogen fuel cell stack 13 generates heat when working, which can heat the power on demand to solve the problem of performance degradation of the power battery 10 under cold weather conditions.

[0047] The power system includes a front electric drive 1, a rear electric drive 6, a front electric drive controller 14 for controlling the front electric drive 1 and a rear electric drive controller 7 for controlling the rear electric drive 6. The front electric drive 1 is arranged on the front side of the frame 19. Specifically, the front electric drive 1 is located on the right side of the left front wheel or the left side of the right front wheel. The front electric drive controller 14 is arranged in the middle of the frame 19 and in front of the power battery 10. The front electric drive controller 14 and the front electric drive 1 adopt a split structure. The air cooling method can effectively reduce the heat dissipation components. The electric drive can achieve long-term high-speed operation and reduce the impact of the limited space of the vehicle on the layout. The front electric drive controller 14 is arranged nearby the rear of the front electric drive 1. The cost can be reduced by shortening the length of the high-voltage wiring harness, saving costs and facilitating later maintenance.

[0048] In this embodiment, the rear electric drive 6 is arranged on the frame 19, behind the power battery 10 and in front of the rear wheels, which effectively utilizes the space, optimizes the vehicle layout, helps to balance the front and rear weight distribution of the vehicle, and improves driving stability. The rear electric drive 6 is relatively independent in position, which is convenient for maintenance and replacement, and reduces maintenance costs.

[0049] Furthermore, the front electric drive 1 and the rear electric drive 6 use motors, specifically, gear reduction motors. The reduction box uses two-stage cylindrical gear reduction, avoiding bevel gear transmission, effectively improving transmission efficiency, and reducing noise levels. The present invention uses dual-motor four-wheel drive, and the power distribution is flexibly controlled by the vehicle controller to adapt to various working conditions. Its economic mode can ensure that the front and rear motors always work in the high-efficiency range, achieve the purpose of energy saving, provide stronger adhesion, faster response speed, and can restore vehicle stability faster, thereby improving driving safety.

[0050] The power battery 10 is arranged at the bottom of the frame 19 and is located between the front machine controller and the rear electric drive controller 7. Since the power battery 10 is relatively large in size, the above arrangement can effectively facilitate the output of the high-voltage wire harness and shorten the length of the high-voltage wire harness. This arrangement evenly distributes the weight of the entire vehicle on the frame 19, can effectively balance the load on the front and rear axles of the entire vehicle, and reduce the vibration and noise of the entire vehicle during driving, thereby improving the driving stability and driving comfort of the entire vehicle.

[0051] In this embodiment, the hydrogen fuel cell all-terrain vehicle also has an on-board charger for charging the power battery 10. The on-board charger is arranged in the electrical box 15 of the frame 19. The on-board charger has an on-board charging port 2. Specifically, the on-board charging port 2 is provided with a mounting bracket, which is fixed to the electrical box 15 through the mounting bracket. The on-board charging port 2 is arranged at the front end of the frame 19. By opening the cover of the front end cover of the frame 19, a 220V voltage can be connected to charge the power battery 10, which is convenient to use.

[0052] In this embodiment, the high-voltage wiring harness of the vehicle includes three parts. The first part of the high-voltage wiring harness is connected from the power battery 10 and enters the front electric drive controller 14 and the rear electric drive controller 7 respectively, and is connected from the front electric drive controller 14 to enter the front electric drive 1, and is connected from the rear electric drive controller 7 to enter the rear electric drive 6, transmitting current to the front electric drive controller 14 and the rear electric drive controller 7; the second part of the high-voltage wiring harness is connected from the hydrogen fuel cell DC transformer 5 to enter the power battery 10, which is the hydrogen fuel charging mode; the third part of the high-voltage wiring harness is connected from the vehicle-mounted charging port 2, which is the external power supply mode, transmitting electric energy to the power battery.

[0053] In this embodiment, the hydrogen fuel cell system is arranged at the front middle part of the frame 19, and the frame 19 is provided with an air duct 17 at the rear of the hydrogen fuel cell system. The hydrogen fuel cell is arranged at the front part of the whole vehicle. Cold air enters the windward side of the hydrogen fuel cell from the front of the whole vehicle, and hot air blows out from the other side of the hydrogen fuel cell and flows toward the rear of the vehicle through the air duct 17.

[0054] The frame 19 is provided with an air guide plate 18, which has an openable and closable air vent 25. When the air vent 25 of the air guide plate 18 is closed, the hot air can be separated from the power battery 10. Specifically, the air guide plate 18 is provided with a guide plate 26, which can be driven to rotate to close or open the opening of the air guide plate 18. The air guide plate 18 is arranged in the middle of the vehicle body, and the rear part of the air guide plate 18 has an inclined plate 27. The air guide plate 18 and the inclined plate 27 are used to separate the hot air blown out from the leeward side of the fuel cell from the power battery 10 and the rear electric drive 6 and the rear electric drive controller 7 of the vehicle body, so as to avoid heating the rear motor, the rear motor controller and the power battery 10 during operation, so as to prevent the rear motor, the motor controller and the power battery 10 from being overheated, and to prevent the hot air circulation from heating the electrical components and causing failure. When the power battery 10 does not need to be heated by hot air, the vents 25 on the air guide plate 18 are closed to separate the hot air from the power battery 10; when the temperature is low and the battery needs to be heated, the vents 25 are opened, and while the hot air flows from the rear of the vehicle, a portion of the hot air flows toward the battery through the vents 25 to heat the battery, causing the battery temperature to rise.

[0055] The hydrogen storage device is divided into a liquid hydrogen storage device and a solid hydrogen storage device. The liquid hydrogen storage device and the solid hydrogen storage device can store hydrogen storage tanks 8 and hydrogen storage bottles. In this embodiment, the hydrogen storage device is a hydrogen storage tank 8. A rear bumper 16 is provided at the rear of the frame 19. A rear shelf 20 is provided between the frame 19 and the rear bumper 16. The hydrogen storage tank 8 is provided on the rear shelf 20. Specifically, a pad bracket 11 is provided on the rear shelf 20. A buffer pad is fixedly provided on the pad bracket 11. The hydrogen storage tank 8 is provided on the buffer pad and fixed to the rear shelf 20 by a fixing belt. Specifically, two buffer pads are provided. The buffer pad is fixed on the bracket 21. The buffer pad adopts a laminated pad 22. The fixing belt adopts a laminated fixing belt 23. The hydrogen storage tank 8 is installed on the laminated pad 22 and fixed with a laminated fixing belt 23. The hydrogen storage tank 8 is installed on the rear shelf 20, which effectively utilizes the space on the shelf, making the whole vehicle structure more compact. At the same time, the rear bumper 16 can protect the hydrogen storage tank 8 when the vehicle rear-ends, reducing the damage caused by the collision. Among them, the buffer pad and the laminated fixing belt 23 can ensure that the hydrogen storage tank 8 is firmly fixed on the rear shelf 20, and can play a buffering and protective role for the hydrogen storage tank 8 after being fixed.

[0056] In this embodiment, a clamping device is provided between the heat dissipation system and the fan bracket 31 of the membrane electrode 32 of the hydrogen fuel cell stack 13, and the clamping device includes a left fixing member and a right fixing member, and an adjusting member for adjusting the distance between the left fixing member and the right fixing member is provided between the left fixing member and the right fixing member. Specifically, the left fixing member includes two left fixing blocks 28 spaced apart along the width direction of the fan bracket 31, and similarly, the right fixing member is provided with two right fixing blocks 29, and the two left fixing blocks 28 and the two right fixing blocks 29 are respectively fixedly connected by corresponding bolts, and the adjusting member is a screw rod 30, and the left fixing block 28 and the right fixing block 29 are threadedly connected to the screw rod 30, and the distance between the left fixing block 28 and the right fixing block 29 is adjusted by the screw rod 30, and the left fixing block 28 and the right fixing block 29 have ears, and the distance between the left fixing member and the right fixing member is adjusted by the screw rod 30 so that the ears clamp and fix the membrane electrode 32 and the fan bracket 31. Taking into account the operating conditions of the all-terrain vehicle, without affecting the intake and exhaust of the fuel cell stack, the fuel cell stack body is reinforced by adding clamping devices on both sides of the membrane electrode 32 and the fan bracket 31 to improve reliability.

[0057] A battery 3 is provided on the vehicle frame 19. When the vehicle is started, the battery 3 powers the low-voltage parts of the vehicle (the instrument 4, the controller, etc.). The power battery 10 drives the front electric drive 1 through the front electric drive controller 14 and drives the rear electric drive 6 through the rear electric drive controller 7. The on-board DC transformer 9 supplies power to the hydrogen fuel cell cooling fan. The driving-related parameters of the vehicle can be observed on the instrument 4.

[0058] Through the above arrangement, the weight of the vehicle is evenly distributed on the frame 19, which can effectively balance the loads on the front and rear axles of the vehicle, reduce the vibration and noise of the vehicle during driving, and improve the driving stability and driving comfort of the vehicle.

[0059] The hydrogen used in the present invention is used to generate electricity to drive the vehicle. Hydrogen can be produced through a variety of renewable energy sources (such as solar energy, wind energy, etc.), which is free from dependence on petroleum resources. The main discharge is water, which has almost no pollution to the environment. The hydrogen fuel cell stack 13 and the power system of the present invention generate less noise when working. There is no noise, setbacks and vibration caused by the engine when driving, and the driving is smooth, and the driving comfort is qualitatively improved.

[0060] This article uses specific examples to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only used to help understand the method of the present invention and its core ideas. The above is only a preferred implementation method of the present invention. It should be pointed out that due to the limitations of textual expression, there are objectively infinite specific structures. For ordinary technicians in this technical field, without departing from the principles of the present invention, several improvements, modifications or changes can be made, and the above technical features can be combined in an appropriate manner; these improvements, modifications, changes or combinations, or the direct application of the inventive concept and technical solution to other occasions without improvement, should be regarded as the protection scope of the present invention.

Claims

1. A hydrogen fuel cell all-terrain vehicle, characterized in that: It includes a vehicle frame, a power system for driving the vehicle, a power battery and a hydrogen fuel cell system for charging the power battery. The hydrogen fuel cell system includes a hydrogen fuel cell stack, a hydrogen fuel cell stack controller, a hydrogen fuel cell DC transformer and a hydrogen storage device. The hydrogen fuel cell stack is used to convert hydrogen into electrical energy, the hydrogen storage device is used to provide hydrogen supply to the hydrogen fuel cell stack, the hydrogen fuel cell stack controller is used to control the hydrogen fuel cell stack, and the hydrogen fuel cell DC transformer is used to rectify the electrical energy generated by the hydrogen fuel cell stack for powering the power system.

2. The hydrogen fuel cell all-terrain vehicle according to claim 1, characterized in that: The hydrogen fuel cell stack is arranged at the front end of the frame, a crossbeam is arranged on the frame, the bottom of the hydrogen fuel cell stack is fixed to the crossbeam through a fixing member, a bracket is arranged on the top of the hydrogen fuel cell stack, a connecting member is arranged on the bracket, and the connecting member is used to fix the bracket to the frame.

3. The hydrogen fuel cell all-terrain vehicle according to claim 1, characterized in that: The hydrogen fuel cell DC transformer is arranged above the hydrogen fuel cell stack, and the hydrogen fuel cell stack controller is arranged below the hydrogen fuel cell stack and located in front of the power battery.

4. The hydrogen fuel cell all-terrain vehicle according to claim 1, characterized in that: It also includes an on-board DC transformer. The hydrogen fuel cell stack is provided with a heat dissipation system for dissipating heat from the hydrogen fuel cell stack. The on-board DC transformer is used to power on-board electronic equipment, and the on-board DC transformer is arranged on the vehicle frame.

5. The hydrogen fuel cell all-terrain vehicle according to claim 4, characterized in that: A clamping device is arranged between the heat dissipation system and the fan bracket of the membrane electrode of the hydrogen fuel cell stack, and the clamping device includes a left fixing part and a right fixing part. The left fixing part is connected to the right fixing part for clamping the membrane electrode and the fan bracket, and an adjusting part for adjusting the distance between the left fixing part and the right fixing part is arranged between the left fixing part and the right fixing part.

6. The hydrogen fuel cell all-terrain vehicle according to claim 1, characterized in that: The hydrogen storage device comprises a hydrogen storage tank. A rear shelf is arranged on the vehicle frame. The hydrogen storage tank is arranged on the rear shelf and is fixed to the rear shelf by a fixing belt.

7. The hydrogen fuel cell all-terrain vehicle according to claim 6, characterized in that: A rear bumper is arranged at the rear of the vehicle frame, and the rear shelf is arranged between the vehicle frame and the rear bumper.

8. The hydrogen fuel cell all-terrain vehicle according to claim 1, characterized in that: The power system includes a front electric drive and a front electric drive controller for controlling the front electric drive, the front electric drive is arranged on the front side of the frame, and the front electric drive controller is arranged in the middle of the frame and in front of the power battery. The power system also includes a rear electric drive and a rear electric drive controller for controlling the rear electric drive, and the rear electric drive is arranged on the frame behind the power battery and in front of the rear wheels.

9. The hydrogen fuel cell all-terrain vehicle according to claim 8, characterized in that: The power battery is arranged at the bottom of the frame and between the front engine controller and the rear electric drive controller. The on-board charger for charging the power battery is arranged in the electrical box of the frame. The on-board charging port of the on-board charger is arranged at the front end of the frame.

10. The hydrogen fuel cell all-terrain vehicle according to claim 1, characterized in that: The frame is provided with an air guide plate, and the air guide plate has an openable and closable air outlet. When the air outlet of the air guide plate is closed, hot air can be separated from the power battery.

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