All-terrain vehicle frame assembly and all-terrain vehicle

Abstract

The all-terrain vehicle frame assembly comprises a frame body, a power device for driving a vehicle to run, a power battery and a fuel cell system used for charging the power battery, the fuel cell system comprises a fuel cell stack, a stack controller and a battery direct-current transformer, and the fuel cell stack is arranged at the front end of the frame body; the fuel cell stack is used for converting chemical energy into electric energy, the electric pile controller is used for controlling the fuel cell stack, the cell direct-current transformer is arranged above the fuel cell stack, the electric pile controller is arranged below the fuel cell stack and located in front of the power cell, and the power cell is arranged at the bottom of the frame body. The battery direct-current transformer is used for rectifying electric energy generated by the fuel cell stack to supply power to the power device, the fuel cell system is adopted as a power source, vibration and noise of the whole vehicle in the running process are reduced, and the running stability and driving comfort of the whole vehicle are improved.

Description

Technical Field

[0001] The present invention relates to the technical field of vehicle frames, and in particular to an all-terrain vehicle frame assembly and an all-terrain vehicle. Background Art

[0002] All-Terrain Vehicle (ATV), also known as off-road vehicle or four-wheel off-road vehicle, is a motor vehicle that can travel on various terrains. At present, all-terrain vehicles are mainly fuel-powered vehicles, which convert the heat generated by gasoline combustion into power through the engine, and transmit the power to the wheels through a series of mechanical transmission devices to drive the vehicle. This form of power has the following disadvantages:

[0003] 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.

[0004] 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.

[0005] 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.

[0006] Therefore, there is an urgent need to design an electric all-terrain vehicle that uses a fuel cell as a 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

[0007] In view of this, the present invention provides an all-terrain vehicle frame assembly, which uses a power battery as a power source. When starting, it responds quickly with almost no delay. When driving, there is no frustration during gear shifting and engine vibration. The driving is smooth and there is no gasoline smell, which qualitatively improves the driving comfort. The second purpose of the present invention is to provide an all-terrain vehicle including the above-mentioned all-terrain vehicle frame assembly.

[0008] The present invention provides an all-terrain vehicle frame assembly and an all-terrain vehicle adopting the following technical solutions:

[0009] An all-terrain vehicle frame assembly and an all-terrain vehicle, including a frame body, a power device for driving the vehicle, a power battery and a fuel cell system for charging the power battery, the fuel cell system including a fuel cell stack, a stack controller and a battery DC transformer, the fuel cell stack is arranged at the front end of the frame body, the fuel cell stack is used to convert chemical energy into electrical energy, the stack controller is used to control the fuel cell stack, the battery DC transformer is arranged above the fuel cell stack, the stack controller is arranged below the fuel cell stack and in front of the power battery, the power battery is arranged at the bottom of the frame body, and the battery DC transformer is used to rectify the electrical energy generated by the fuel cell stack for powering the power device.

[0010] Optionally, a crossbeam is provided in the front-middle part of the frame body, the bottom of the fuel cell stack is fixed to the crossbeam by a fixing part, a bracket is provided on the top of the fuel cell stack, a connecting part is provided on the bracket, and the connecting part is used to fix the bracket to the frame body, so that the fuel cell stack is installed firmly, the fuel cell stack is evenly stressed as a whole, and the fuel cell stack is effectively protected.

[0011] Optionally, it also includes a vehicle-mounted DC transformer, which is used to power the vehicle-mounted electronic equipment. The vehicle-mounted DC transformer is arranged on the left or right side of the frame body to facilitate the wiring harness output, shorten the length of the high-voltage wiring harness, save costs, and facilitate later maintenance.

[0012] Optionally, the power unit 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 body, and the front electric drive controller is arranged in the middle of the frame body and in front of the power battery. The power unit 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 body behind the power battery and in front of the rear wheels.

[0013] Optionally, the front electric drive and the rear electric drive use a gear reduction motor, and the reduction box of the gear reduction motor uses a two-stage cylindrical gear reduction, avoiding bevel gear transmission, effectively improving transmission efficiency and reducing noise levels.

[0014] Optionally, the power battery is arranged at the bottom of the frame body and between the front engine controller and the rear electric drive controller, and the on-board charger for charging the power battery is arranged in the electrical box of the frame body, and the on-board charging port of the on-board charger is arranged at the front end of the frame body. The power battery is relatively large in size, and it is convenient to arrange it at the bottom of the vehicle to lead out 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 body, which 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.

[0015] Optionally, an energy storage device is included, which is used to store chemical energy. A rear shelf is arranged on the frame body, a pad bracket is arranged on the rear shelf, a buffer pad is fixedly arranged on the pad bracket, and the energy storage device 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 to make the structure of the whole vehicle more compact. The buffer pad and the laminated fixing belt can ensure that the energy storage device is firmly on the rear shelf, and can play a buffering and protective role on the energy storage device after being fixed.

[0016] Optionally, a rear bumper is provided at the rear of the frame body, and the rear rack is provided between the frame body and the rear bumper. The rear bumper can protect the energy storage device when a vehicle rear-ends, thereby reducing damage caused by the collision.

[0017] Optionally, an air guide plate is provided on the frame body, 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.

[0018] In order to achieve the above-mentioned second purpose, the present invention also provides an all-terrain vehicle, which includes any one of the above-mentioned all-terrain vehicle frame assemblies. Since the above-mentioned all-terrain vehicle frame assembly has the above-mentioned technical effects, the all-terrain vehicle having the all-terrain vehicle frame assembly should also have corresponding technical effects.

[0019] In summary, the present invention includes at least one of the following beneficial technical effects: using a fuel cell system as a power source, reducing the vibration and noise of the entire vehicle during driving, and improving the driving stability and driving comfort of the entire vehicle. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] 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.

[0021] Figure 1 is a schematic diagram of the overall structure of an embodiment of the present invention;

[0022] Figure 2 is a side view of an embodiment of the present invention;

[0023] Figure 3 The schematic diagram of the connection structure between the rear shelf and the energy storage device of the embodiment of the present invention is Figure 1 ;

[0024] Figure 4 The schematic diagram of the connection structure between the rear shelf and the energy storage device of the embodiment of the present invention is Figure 2 ;

[0025] Figure 5 The fuel cell stack and the bracket connection structure of the embodiment of the present invention are schematically shown in FIG. Figure 1 ;

[0026] Figure 6 The fuel cell stack and the bracket connection structure of the embodiment of the present invention are schematically shown in FIG. Figure 2 ;

[0027] Figure 7 It is a partial structural schematic diagram of an embodiment of the present invention;

[0028] Figure 8 Schematic diagram of the structure of the wind guide plate according to an embodiment of the present invention.

[0029] Explanation of the reference numerals: 1. front electric drive; 2. on-board charging port; 3. battery; 4. instrument; 5. battery DC transformer; 6. rear electric drive; 7. rear electric drive controller; 8. energy storage device; 9. on-board DC transformer; 10. power battery; 11. pad bracket; 12. battery stack controller; 13. fuel cell stack; 14. front electric drive controller; 15. electrical box; 16. rear bumper; 17. air duct; 18. air guide plate; 19. vehicle frame; 20. rear shelf; 21. bracket; 22. laminated pad; 23. laminated fixing belt; 24. crossbeam; 25. air outlet; 26. guide plate; 27. tilting plate. DETAILED DESCRIPTION

[0030] 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.

[0031] The following is combined with Figure 1-8 The present invention is described in further detail.

[0032] The embodiments of the present invention disclose an all-terrain vehicle frame assembly and an all-terrain vehicle.

[0033] Reference Figure 1-Figure 8, an all-terrain vehicle frame assembly, including a frame body 19, a power device for driving the vehicle, a power battery 10 and a fuel cell system for charging the power battery 10, the fuel cell system including a fuel cell stack 13, a stack controller 12 and a battery DC transformer 5, the fuel cell stack is arranged at the front end of the frame body 19, the fuel cell stack 13 is used to convert chemical energy into electrical energy, the stack controller 12 is used to control the fuel cell stack 13, the battery DC transformer 5 is arranged above the fuel cell stack 13, the stack controller 12 is arranged below the fuel cell stack 13 and in front of the power battery 10, the power battery 10 is arranged at the bottom of the frame body 19, the battery DC transformer 5 is used to rectify the electrical energy generated by the fuel cell stack 13 for powering the power device, the fuel cell system is used as a power source, and the vibration and noise of the whole vehicle during driving are reduced, thereby improving the driving stability and driving comfort of the whole vehicle.

[0034] In this embodiment, the frame body 19 adopts a 72V voltage platform and integrates a hydrogen fuel cell system. Through the reasonable zoning design of the whole vehicle, the 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.

[0035] The fuel cell system may be a hydrogen fuel cell system, a phosphoric acid fuel cell system, a solid oxide fuel cell system, a molten carbonate fuel cell system, an alkaline fuel cell system, and a proton exchange membrane fuel cell system.

[0036] In this embodiment, the fuel cell system adopts a hydrogen fuel cell system, the fuel cell stack 13 is a hydrogen fuel cell stack, and the battery DC transformer 5 is a hydrogen fuel cell DC transformer 5. The hydrogen fuel cell system is a power generation device that directly converts the chemical energy of hydrogen and oxygen into electrical energy, and has the advantages of clean and low carbon, quick start and stop, and no noise. Among them, the hydrogen fuel cell stack is the core of the hydrogen fuel cell system and is responsible for the occurrence of electrochemical reactions. The fuel cell stack 13 is composed of a plurality of single cells stacked in series, and each single cell includes a bipolar plate and a membrane electrode (MEA), which are assembled through a specific process to form a proton exchange membrane fuel cell stack 13. The membrane electrode includes a proton exchange membrane, a catalyst and a gas diffusion layer, which 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, and at the same time serves as an isolation and connection component between batteries.

[0037] 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.

[0038] In this embodiment, the hydrogen fuel cell stack is arranged at the front end of the frame body 19, a crossbeam 24 is arranged on the frame body 19, the bottom of the hydrogen fuel cell stack is fixed to the crossbeam 24 by a fixing member, a bracket 21 is arranged on the top of the hydrogen fuel cell stack, and a connecting member is arranged on the bracket 21, and the connecting member is used to fix the bracket 21 to the frame body 19. Specifically, two crossbeams 24 are arranged in the front part of the frame body 19, and the two crossbeams 24 are arranged along the width direction of the frame body 19. The fixing member adopts bolts, and the bracket 21 is provided with a mounting hole for mounting 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 is arranged in the front position of the frame body 19, the bottom of the hydrogen fuel cell stack is fixed to the crossbeam 24 by bolts, and the top is connected to the frame body 19 by bolts through the bracket 21, and 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 body 19 at six points, the frame body 19 can bear the load more evenly to cope with the intense road vibration feedback of the all-terrain vehicle.

[0039] In this embodiment, the hydrogen fuel cell DC transformer 5 is arranged above the hydrogen fuel cell stack, and the hydrogen fuel cell DC transformer 5 is arranged above the hydrogen fuel cell stack 13, 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.

[0040] 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 to ensure the coordinated operation of each subsystem. The hydrogen fuel cell stack controller 12 is arranged below the hydrogen fuel cell stack and in front of the power battery 10, shortening the connection line between the hydrogen fuel cell stack, 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.

[0041] It also includes an on-board DC transformer 9. 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 9 is used to power the on-board electronic equipment. The on-board DC transformer 9 converts the high-voltage DC output of the power battery 10 into low-voltage DC 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 body 19. Specifically, the on-board DC transformer 9 is arranged on the left or right side of the frame body 19. The DC transformer is reasonably arranged on one side of the frame body 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 loss, and facilitate assembly and maintenance. The hydrogen fuel cell stack 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.

[0042] The power device 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 body 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 body 19 and is located 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 whole 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.

[0043] In this embodiment, the rear electric drive 6 is arranged on the frame body 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. It helps to balance the front and rear weight distribution of the vehicle and improve driving stability. The rear electric drive 6 is relatively independent in position, which is convenient for maintenance and replacement, and reduces maintenance costs.

[0044] Furthermore, the front electric drive 1 and the rear electric drive 6 use motors, specifically, gear reduction motors, and 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 adjusted by the vehicle controller to adapt to various working conditions. Its economic mode can ensure that the front electric drive 1 and the rear electric drive 6 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.

[0045] The power battery 10 is arranged at the bottom of the frame body 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 body 19, can effectively balance the load of 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.

[0046] 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 body 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 body 19. By opening the cover of the front end cover of the frame body 19, a 220V voltage can be connected to charge the power battery 10, which is convenient to use.

[0047] 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 22, which is the external power supply mode, transmitting electric energy to the power battery 10.

[0048] In this embodiment, the hydrogen fuel cell system is arranged at the front middle part of the frame body 19, and the frame body 19 is located at the rear of the hydrogen fuel cell system and is provided with an air duct 17. The hydrogen fuel cell is arranged at the front part of the whole vehicle, and the cold air enters the windward surface of the hydrogen fuel cell from the front of the whole vehicle, and the hot air is blown out from the other side of the hydrogen fuel cell and flows toward the rear of the vehicle through the air duct 17.

[0049] The frame body 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 air of the power battery 10 and the rear electric drive 6 and the rear electric drive controller 7 of the vehicle body. During operation, the rear motor, the rear motor controller and the power battery 10 can be prevented from being heated, so that the temperature of the rear motor, the motor controller and the power battery 10 is too high, and the hot air circulation can be prevented 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 toward 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.

[0050] Depending on the fuel cell system, whether to install the energy storage device 8 and the type of the energy storage device 8 can be determined according to actual needs. In this embodiment, the energy storage device 8 is divided into a liquid energy storage device 8 and a solid energy storage device 8. The liquid energy storage device 8 and the solid energy storage device 8 can be used for hydrogen storage tanks and hydrogen storage bottles for storage. In this embodiment, the energy storage device 8 is a hydrogen storage tank. A rear bumper 16 is provided at the rear of the frame body 19, and a rear shelf 20 is provided between the frame body 19 and the rear bumper 16. The hydrogen storage tank 8 is provided on the rear shelf 2020. Specifically, a pad bracket 11 is provided on the rear shelf 20, and a buffer pad is fixedly provided on the pad bracket 11. The hydrogen storage tank is provided on the buffer pad and fixed to the rear shelf 20 by a fixing belt. Specifically, two buffer pads are provided, and the buffer pad is fixed on the bracket 21. The buffer pad adopts a laminated pad block 22, and the fixing belt adopts a laminated fixing belt 23. The hydrogen storage tank is installed on the laminated pad block 22 and fixed with a laminated fixing belt 23. The hydrogen storage tank is installed on the rear shelf 20, which effectively utilizes the space on the shelf and makes the vehicle structure more compact. At the same time, the rear bumper 16 can protect the hydrogen storage tank when the vehicle rear-ends and reduce the damage caused by the collision. Among them, the buffer pad and the laminated fixing belt 23 can ensure that the hydrogen storage tank is firmly on the rear shelf 20, and after being fixed, it can play a buffering and protective role for the hydrogen storage tank.

[0051] In this embodiment, a battery 3 is provided on the frame body 19. When the whole vehicle is started, the battery 3 powers the low-voltage part of the whole 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, and the driving-related parameters of the whole vehicle can be observed on the instrument 4.

[0052] Through the above arrangement, the weight of the vehicle is evenly distributed on the frame body 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.

[0053] The fuel cell used in the present invention generates electricity to drive the vehicle, which is highly efficient, has high energy conversion efficiency, and is pollution-free. The fuel cell uses fuel and oxygen as raw materials, and emits very little harmful gas; low noise, the fuel cell itself is noiseless, motionless, and vibrationless, low noise, setbacks and vibrations during use, smooth driving, and qualitatively improved driving comfort; strong adaptability: The fuel cell has a strong ability to adapt to load changes, can follow large load changes in a short time, and is particularly suitable for all-terrain vehicles.

[0054] The present invention also provides an all-terrain vehicle, which includes the above-mentioned all-terrain vehicle frame assembly. Since the all-terrain vehicle adopts the above-mentioned technical solution, it at least has all the beneficial effects brought by the technical solution of the above-mentioned embodiment, which will not be repeated here one by one.

[0055] 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. An all-terrain vehicle frame assembly, characterized in that: It includes a frame body, a power device for driving the vehicle, a power battery and a fuel cell system for charging the power battery. The fuel cell system includes a fuel cell stack, a stack controller and a battery DC transformer. The fuel cell stack is arranged at the front end of the frame body, the fuel cell stack is used to convert chemical energy into electrical energy, the stack controller is used to control the fuel cell stack, the battery DC transformer is arranged above the fuel cell stack, the stack controller is arranged below the fuel cell stack and in front of the power battery, the power battery is arranged at the bottom of the frame body, and the battery DC transformer is used to rectify the electrical energy generated by the fuel cell stack for powering the power device.

2. The all-terrain vehicle frame assembly according to claim 1, characterized in that: A crossbeam is arranged at the front center of the frame body, the bottom of the fuel cell stack is fixed to the crossbeam via a fixing piece, a bracket is arranged at the top of the fuel cell stack, a connecting piece is arranged on the bracket, and the connecting piece is used to fix the bracket to the frame body.

3. The all-terrain vehicle frame assembly according to claim 1, characterized in that: It also includes a vehicle-mounted DC transformer, which is used to power the vehicle-mounted electronic equipment. The vehicle-mounted DC transformer is arranged on the left side or the right side of the frame body.

4. The all-terrain vehicle frame assembly according to claim 1, characterized in that: The power device 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 body, the front electric drive controller is arranged in the middle of the frame body and in front of the power battery, the power device also includes a rear electric drive and a rear electric drive controller for controlling the rear electric drive, the rear electric drive is arranged on the frame body behind the power battery and in front of the rear wheels.

5. The all-terrain vehicle frame assembly according to claim 4, characterized in that: The front electric drive and the rear electric drive use gear reduction motors, and the reduction box of the gear reduction motor uses two-stage cylindrical gear reduction.

6. The all-terrain vehicle frame assembly according to claim 4, characterized in that: The power battery is arranged at the bottom of the frame body 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 body. The on-board charging port of the on-board charger is arranged at the front end of the frame body.

7. The all-terrain vehicle frame assembly according to claim 4, characterized in that: It also includes an energy storage device for storing chemical energy. A rear shelf is arranged on the frame body, a pad bracket is arranged on the rear shelf, a buffer pad is fixedly arranged on the pad bracket, and the energy storage device is arranged on the rear shelf and fixed to the rear shelf by a fixing belt.

8. The all-terrain vehicle frame assembly according to claim 7, characterized in that: A rear bumper is arranged at the rear of the frame body, and the rear shelf is arranged between the frame body and the rear bumper.

9. The all-terrain vehicle frame assembly according to claim 1, characterized in that: The frame body 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.

10. An all-terrain vehicle, characterized in that: The all-terrain vehicle is equipped with an all-terrain vehicle frame assembly as described in any one of claims 1-9.

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