Fuel cell garbage truck

Abstract

The utility model discloses a fuel cell garbage truck, and relates to the technical field of vehicles. The fuel cell garbage truck comprises a frame, a cab arranged above the frame, a compartment and a loading mechanism, the compartment and the loading mechanism are arranged behind the cab, the compartment is transferred through the loading mechanism, and a hydrogen supply mechanism, a driving system, a fuel cell engine and a power cell module are arranged at the bottom of the frame. The fuel cell engine, the power cell module and the driving system are electrically connected in sequence, the hydrogen supply mechanism transmits hydrogen to the fuel cell engine, the fuel cell engine converts the hydrogen of the hydrogen supply mechanism into electric energy and transmits the electric energy to the power cell module, and the power cell module transmits the electric energy to the driving system. The layout reasonability of the fuel cell garbage truck can be improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of vehicles, in particular to a fuel cell garbage truck. BACKGROUND

[0002] Compared with a pure electric detachable garbage truck, the fuel cell garbage truck is additionally equipped with a fuel cell engine system, a hydrogen supply system, an electric pile cooling system, etc. It is difficult to reasonably arrange these systems under the condition that the overall length of the vehicle is limited.

[0003] In the prior art, the hydrogen supply system is generally arranged behind the driver's cabin, which occupies the storage space of the vehicle compartment. For a garbage truck, the size of the storage space is directly related to its garbage loading capacity. Reducing the storage space will reduce work efficiency and increase operating costs. CONTENT OF THE UTILITY MODEL

[0004] The purpose of the present application is to provide a fuel cell garbage truck which can improve the rationality of the layout of the fuel cell garbage truck.

[0005] The embodiments of the present application are implemented as follows:

[0006] The embodiments of the present application provide a fuel cell garbage truck, which comprises a vehicle frame, a driver's cabin arranged above the vehicle frame, a vehicle compartment and an upper loading mechanism. The vehicle compartment and the upper loading mechanism are arranged behind the driver's cabin. The vehicle compartment is transferred by the upper loading mechanism. The bottom of the vehicle frame is provided with a hydrogen supply mechanism, a driving system, a fuel cell engine and a power battery module. The fuel cell engine, the power battery module and the driving system are electrically connected in sequence. The hydrogen supply mechanism transmits hydrogen to the fuel cell engine. The fuel cell engine converts the hydrogen from the hydrogen supply mechanism into electric energy and transmits it to the power battery module. The power battery module transmits electric energy to the driving system.

[0007] Optionally, as a kind of implementable mode, the upper loading mechanism includes an upper loading motor, a hydraulic oil tank and an upper loading hook arm, and a hydraulic pump. The upper loading motor and the hydraulic oil tank provide power to the hydraulic pump. The hydraulic pump drives the upper loading hook arm to move. The vehicle compartment is moved by the upper loading hook arm.

[0008] Optionally, as a kind of implementable mode, the hydrogen supply mechanism includes two hydrogen cylinders. The two hydrogen cylinders are installed on both sides of the vehicle frame. The two hydrogen cylinders are respectively communicated with the fuel cell engine.

[0009] Optionally, as a kind of implementable mode, the driving system, the power battery module and the fuel cell engine are arranged in sequence on the vehicle frame along the direction of travel of the vehicle.

[0010] Optionally, as an implementable mode, the vehicle frame is further provided with a cooling system, the cooling system comprising a motor cooling module, a stack cooling module and a power battery cooling module, the fuel cell engine being cooled by the motor cooling module, the power battery module being cooled by the power battery cooling module, and the driving system being cooled by the stack cooling module.

[0011] Optionally, as an implementable mode, the vehicle frame is further provided with a braking system, the braking system comprising an electric air compressor assembly, a drying tank, an air cylinder and a braking assembly connected in sequence, the air outside being converted into compressed air by the electric air compressor assembly and then transmitted to the drying tank for drying, the compressed air processed by the drying tank being transmitted to the air cylinder, and the compressed air being delivered to the braking assembly by the air cylinder.

[0012] Optionally, as an implementable mode, the tail of the vehicle frame is further provided with a rubber ground wiping belt, the static electricity generated by the vehicle being transmitted to the ground by the rubber ground wiping belt.

[0013] Optionally, as an implementable mode, the driving system is an integrated electric drive axle system.

[0014] Optionally, as an implementable mode, the vehicle frame is further provided with an integrated controller, the integrated controller being electrically connected with the fuel cell engine, the power battery module and the driving system.

[0015] Optionally, as an implementable mode, the vehicle frame is a single-layer beam structure with varying web height.

[0016] The beneficial effects of the embodiments of the present application include:

[0017] The fuel cell garbage truck provided by the application comprises a vehicle frame, a cab arranged above the vehicle frame, and a loading mechanism arranged behind the cab, the loading mechanism is used for transferring a vehicle compartment, the bottom of the vehicle frame is provided with a hydrogen supply mechanism, a driving system, a fuel cell engine, and a power battery module, the fuel cell engine, the power battery module, and the driving system are electrically connected in sequence, the hydrogen supply mechanism supplies hydrogen to the fuel cell engine, the fuel cell engine converts the hydrogen into electric energy and transmits the electric energy to the power battery module, and the power battery module supplies electric energy to the driving system. By arranging the hydrogen supply mechanism, the fuel cell engine, and the power battery module at the bottom of the vehicle frame, the space at the bottom of the vehicle is fully utilized, the storage space of the vehicle compartment is avoided, and the garbage truck has sufficient garbage loading capacity. Compared with the prior art in which the hydrogen supply system is arranged behind the cab, the garbage truck has a significantly improved single garbage transfer capacity, effectively reduces the number of transfer trips, greatly improves the work efficiency, and reduces the operation cost. The bottom layout makes the connection pipelines and lines between the systems more compact and reasonable, shortens the hydrogen transmission path, the electric power transmission path, and the cooling liquid circulation path, reduces the energy loss and the transmission failure risk, and improves the operation efficiency and stability of the entire vehicle system. BRIEF DESCRIPTION OF DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the application, the following will briefly introduce the drawings needed to be used in the embodiments. It should be understood that the following drawings only show some embodiments of the application, and therefore should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can also be obtained without creative labor.

[0019] Figure 1 Fig. 1 is a structural schematic diagram of a fuel cell garbage truck provided by an embodiment of the application.

[0020] Figure 2 Fig. 2 is another structural schematic diagram of a fuel cell garbage truck provided by an embodiment of the application.

[0021] Fig. 1 is a structural schematic diagram of a fuel cell garbage truck provided by an embodiment of the application. DETAILED DESCRIPTION

[0022] In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the following will clearly and completely describe the technical solutions in the embodiments of the present application with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some but not all of the embodiments of the present application. The components of the embodiments of the present application described and shown in the drawings can be arranged and designed in various different configurations.

[0023] Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the claimed present application, but only represents selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work are within the scope of protection of the present application.

[0024] It should be noted that: similar reference numerals and letters represent similar items in the following drawings, therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings. In addition, the terms "first", "second", "third" and the like are only used to distinguish description, and cannot be understood as indicating or implying relative importance.

[0025] In the description of the present application, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set", "install", "connect", "connect" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be the communication inside two elements. For those of ordinary skill in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0026] Please refer to Figure 1 and Figure 2 The present embodiment provides a fuel cell garbage truck 100, which comprises a vehicle frame 110, a cab 120 arranged above the vehicle frame 110 and an upper loading mechanism 130, the upper loading mechanism 130 is arranged behind the cab 120, the vehicle compartment is transferred through the upper loading mechanism 130, the bottom of the vehicle frame 110 is provided with a hydrogen supply mechanism 140, a driving system 150, a fuel cell engine 160 and a power battery module 170, the fuel cell engine 160, the power battery module 170 and the driving system 150 are electrically connected in sequence, the hydrogen supply mechanism 140 transmits hydrogen to the fuel cell engine 160, the fuel cell engine 160 converts the hydrogen of the hydrogen supply mechanism 140 into electric energy and transmits it to the power battery module 170, and the power battery module 170 transmits electric energy to the driving system 150.

[0027] In use of the fuel cell garbage truck 100 of the present application, when the vehicle starts, the power battery module 170 first releases the stored electric energy to supply power to the fuel cell engine 160, the driving system 150 and other vehicle-mounted electronic devices, so that the vehicle enters a preparatory driving state. During driving, the hydrogen supply mechanism 140 stably supplies hydrogen to the fuel cell engine 160, and the fuel cell engine 160 continuously generates direct current through electrochemical reaction of hydrogen and oxygen in the air. Part of the generated electric energy is directly supplied to the driving system 150 to drive the vehicle forward, and the other part is stored in the power battery module 170. When the vehicle accelerates, climbs a slope or needs additional power, the power battery module 170 and the fuel cell engine 160 cooperate to supply power to meet the power demand; when the vehicle decelerates or brakes, the driving system 150 reverses as a generator to convert the vehicle kinetic energy into electric energy and charge the power battery module 170, realizing energy recovery. When the vehicle reaches the garbage collection point, the driver controls the loading mechanism 130 in the cab 120 to start the hydraulic or mechanical device to automatically load, lift and dump the vehicle compartment, completing the garbage collection and transfer operation.

[0028] The fuel cell garbage truck 100 provided by the present application comprises a vehicle frame 110, a cab 120 arranged above the vehicle frame 110 and a loading mechanism 130 arranged behind the cab 120. The loading mechanism 130 is used to transfer the vehicle compartment. The bottom of the vehicle frame 110 is provided with a hydrogen supply mechanism 140, a driving system 150, a fuel cell engine 160 and a power battery module 170. The fuel cell engine 160, the power battery module 170 and the driving system 150 are electrically connected in sequence. The hydrogen supply mechanism 140 supplies hydrogen to the fuel cell engine 160. The fuel cell engine 160 converts the hydrogen from the hydrogen supply mechanism 140 into electric energy and transmits the electric energy to the power battery module 170. The power battery module 170 transmits electric energy to the driving system 150. By arranging the hydrogen supply mechanism 140, the fuel cell engine 160 and the power battery module 170 at the bottom of the vehicle frame 110, the space at the bottom of the vehicle is fully utilized, the storage space in the vehicle compartment is avoided, and the garbage truck has sufficient garbage loading capacity. Compared with the prior art in which the hydrogen supply system is arranged behind the cab, the design significantly increases the single garbage transfer amount of the garbage truck, effectively reduces the transfer frequency, greatly improves the work efficiency and reduces the operating cost. The bottom layout makes the connection pipelines and lines between the systems more compact and reasonable, shortens the hydrogen transmission path, the electric power transmission path and the cooling liquid circulation path, reduces the energy loss and the transmission failure risk, and improves the operation efficiency and stability of the entire vehicle system.

[0029] In one feasible embodiment of the present application, as shown in Figure 1 and Figure 2As shown, the upper loading mechanism 130 includes an upper loading motor 131, a hydraulic oil tank 132, and an upper loading hook arm 133, a hydraulic pump, the upper loading motor 131 and the hydraulic oil tank 132 power the hydraulic pump, the hydraulic pump drives the upper loading hook arm 133 to move, and the vehicle compartment is moved through the upper loading hook arm 133.

[0030] The upper loading mechanism 130 is the core part of realizing the garbage transfer operation, which is composed of the upper loading motor 131, the hydraulic oil tank 132, the upper loading hook arm 133 and the hydraulic pump. The upper loading motor 131 is one of the power sources, which provides initial mechanical energy for the whole upper loading system after starting. It has high torque output characteristics and can overcome the resistance of the upper loading mechanism 130 during startup in a short time. The hydraulic oil tank 132 is used to store a sufficient amount of hydraulic oil. Hydraulic oil is used as a medium for power transmission to ensure the stability and continuity of power transmission. The upper loading hook arm 133 is the key component that directly contacts the vehicle compartment and realizes its movement. Through specific mechanical structure design, it has high strength and good bearing capacity, and can safely and stably transport the vehicle compartment. The hydraulic pump is the power conversion hub of the upper loading mechanism 130, which works efficiently with the support of the upper loading motor 131 and the hydraulic oil tank 132. The upper loading motor 131 drives the hydraulic pump to operate, so that the hydraulic oil in the hydraulic oil tank 132 forms high-pressure oil in the pump. These high-pressure oil is accurately delivered to the hydraulic cylinder and other execution elements, and then drives the upper loading hook arm 133 to move along the predetermined trajectory, realizes the complex actions of loading, lifting and dumping of the vehicle compartment, and meets the diversified operation requirements of urban environmental sanitation garbage collection points.

[0031] In one embodiment of the present application, as shown in Figure 1 and Figure 2 The hydrogen supply mechanism 140 includes two hydrogen cylinders, which are installed on both sides of the vehicle frame 110 and are in communication with the fuel cell engine 160.

[0032] Specifically, the hydrogen supply mechanism 140 adopts the design of two hydrogen cylinders, and the two hydrogen cylinders are symmetrically installed on both sides of the vehicle frame 110. The hydrogen cylinder is a key container for storing hydrogen, which is made of high-strength, lightweight composite materials, and has excellent pressure resistance to ensure safe storage of hydrogen in a high-pressure environment.

[0033] The two hydrogen cylinders are respectively in communication with the fuel cell engine 160, and this double-sided communication design has multiple advantages. On the one hand, double-sided gas supply can ensure stable and balanced hydrogen supply for the fuel cell engine 160 under different working conditions, avoiding unstable engine operation due to single-sided gas supply failure or pressure fluctuation; on the other hand, compared with single-sided gas supply design, double-sided gas supply shortens the average path of hydrogen transmission, reduces the transmission time and energy loss of hydrogen in the pipeline, and improves the response speed and power generation efficiency of the fuel cell engine 160.

[0034] In an embodiment of the present application, as shown in Figure 1 and Figure 2 The driving system 150, the power battery module 170 and the fuel cell engine 160 are sequentially arranged on the vehicle frame 110 in the direction of travel of the vehicle.

[0035] From the perspective of energy transmission, the sequential arrangement in the direction of travel shortens the key path of electric energy and power transmission. The electric energy generated by the fuel cell engine 160 can be transmitted to the power battery module 170 for storage or directly supplied to the adjacent driving system 150 in the shortest distance, reducing line loss and transmission delay.

[0036] From the perspective of heat dissipation requirements, the adjacent arrangement facilitates unified planning of the heat dissipation system. Since each component generates heat during operation, close arrangement facilitates sharing of heat dissipation air ducts or cooling liquid circulation pipelines, improves heat dissipation efficiency, and avoids affecting the performance and service life of the components due to local overheating.

[0037] Further, the vehicle frame 110 is also provided with a cooling system 180, which includes a motor cooling module, a stack cooling module and a power battery cooling module. The motor cooling module is used to dissipate heat from the fuel cell engine 160, the power battery cooling module is used to dissipate heat from the power battery module 170, and the stack cooling module is used to dissipate heat from the driving system 150. The cooling system 180 provided on the vehicle frame 110 is composed of the motor cooling module, the stack cooling module and the power battery cooling module, each cooling module performs its own function to provide precise cooling protection for the corresponding key components. The motor cooling module is used to dissipate the large amount of heat generated by the fuel cell engine 160 during operation. An efficient heat dissipation method such as a liquid cooling or air cooling combined mode is adopted to remove heat through cooling liquid circulation or air flow, so as to ensure that the fuel cell engine 160 operates within an appropriate temperature range and maintains its high efficiency of electric energy conversion.

[0038] In an embodiment of the present application, as shown in Figure 1 and Figure 2 The vehicle frame 110 is also provided with a braking system 190, which includes an electric air compressor assembly, a drying tank, an air cylinder and a braking assembly connected in sequence. The electric air compressor assembly converts air from the outside into compressed air, which is then transmitted to the drying tank for drying. The compressed air treated by the drying tank is transmitted to the air cylinder, and the air cylinder supplies compressed air to the braking assembly.

[0039] During the vehicle braking process, external air is sucked in and compressed into high-pressure air. The compressed air first enters the drying tank, which is filled with drying agent inside to remove moisture and impurities in the air. Because the moisture in the air may freeze in a low-temperature environment, and impurities may damage the brake components, the drying tank functions to purify the air to ensure that the air entering the air reservoir is dry and clean. The air reservoir is used to store high-pressure air after drying treatment, and it plays a buffering and storage role. It can quickly provide enough compressed air for the brake components during continuous braking or emergency braking of the vehicle, ensuring the timeliness and effectiveness of braking. The brake components are the final execution components for realizing vehicle braking. According to the driver's braking instructions, high-pressure air provided by the air reservoir is used to drive brake shoes and other components to contact the brake disc or drum, generating friction to slow down or stop the vehicle.

[0040] In an embodiment of the present application, as shown in Figure 1 and Figure 2 , the tail of the vehicle frame 110 is also provided with a rubber ground dragging belt 111, which transmits static electricity generated by the vehicle to the ground. The rubber ground dragging belt 111 installed at the tail of the vehicle frame 110 is made of high-conductivity and high-wear-resistant rubber material. During vehicle driving, due to tire friction with the ground, friction between vehicle body components and other reasons, static electricity will accumulate on the vehicle. If the static electricity cannot be discharged in time, it may cause a fire, especially for the fuel cell garbage truck 100, there are flammable and explosive substances such as hydrogen in the vehicle, the risk of static electricity is more prominent. The rubber ground dragging belt 111 transmits the static electricity accumulated on the vehicle to the ground through continuous friction contact with the ground, forming a safe static electricity discharge channel. Its length and width are optimized to ensure good grounding effect under different road conditions, such as dry cement road, wet asphalt road, etc., effectively eliminating the risk of static electricity. It provides a key means for eliminating static electricity for the fuel cell garbage truck 100. When transporting flammable and explosive garbage or working in special places such as gas stations, timely discharge of static electricity can avoid serious accidents such as explosion and fire caused by static spark, ensuring the safety of the vehicle, the driver and the surrounding environment.

[0041] In an embodiment of the present application, as shown in Figure 1 and Figure 2As shown, the drive system 150 is an integrated electric drive axle system. The drive system 150 adopts an integrated electric drive axle system which integrates key components such as electric motor, reducer and drive axle. This highly integrated design reduces the number of parts and simplifies the transmission link. The electric motor serves as a power source and efficiently converts electrical energy into mechanical energy. Its performance parameters are optimized to meet the power requirements of the garbage truck in urban road driving. The integrated electric drive axle system greatly reduces the occupied space of the drive system 150, making the bottom layout of the vehicle frame 110 more compact and simple, which is conducive to the reasonable arrangement of other systems, and also reduces the self-weight of the vehicle, improves the energy utilization efficiency, and provides support for the lightweight design of the vehicle.

[0042] In an embodiment of the present application, as shown in Figure 1 and Figure 2 The vehicle frame 110 is also provided with an integrated controller 112, which is electrically connected with the fuel cell engine 160, the power battery module 170 and the drive system 150. Intelligent collaborative management of the fuel cell engine 160, the power battery module 170 and the drive system 150 is achieved. Through real-time monitoring and accurate control, the components work closely together under different working conditions to maximize their performance and improve the overall performance of the vehicle, such as power performance, energy utilization efficiency, range, etc.

[0043] In an embodiment of the present application, as shown in Figure 1 and Figure 2 The vehicle frame 110 is a single-layer beam structure with variable web height. The web height of the beam is flexibly designed according to the load distribution of the vehicle frame 110. In the area where the vehicle frame 110 bears a large vertical load, such as the position where heavy garbage or equipment is placed in the middle of the vehicle, the web height is designed to be higher. This is because a higher web height can provide a larger sectional moment of inertia, which can effectively enhance the bending resistance of the vehicle frame 110 in the vertical direction according to the principle of material mechanics, preventing the vehicle frame 110 from deforming too much under heavy pressure.

[0044] The above only describes the preferred embodiments of the present application and is not intended to limit the present application. Those skilled in the art can make various changes and modifications to the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A fuel cell garbage truck characterized by, The application relates to a hydrogen-fuelled vehicle, which comprises a frame, a cab arranged above the frame, a carriage and a loading mechanism, the carriage and the loading mechanism are arranged behind the cab, the carriage is transferred by the loading mechanism, the bottom of the frame is provided with a hydrogen supply mechanism, a driving system, a fuel cell engine and a power battery module, the fuel cell engine, the power battery module and the driving system are electrically connected in sequence, the hydrogen supply mechanism transmits hydrogen to the fuel cell engine, the fuel cell engine converts the hydrogen into electric energy and transmits the electric energy to the power battery module, and the power battery module transmits electric energy to the driving system.

2. The fuel cell garbage truck of claim 1, wherein, The loading mechanism comprises a loading motor, a hydraulic oil tank, a loading hook arm and a hydraulic pump, the loading motor and the hydraulic oil tank provide power for the hydraulic pump, the hydraulic pump drives the loading hook arm to move, and the carriage is moved by the loading hook arm.

3. The fuel cell garbage truck of claim 1, wherein, The hydrogen supply mechanism comprises two hydrogen cylinders, the two hydrogen cylinders are arranged on the two sides of the frame, and the two hydrogen cylinders are communicated with the fuel cell engine respectively.

4. The fuel cell garbage truck of claim 1, wherein, The driving system, the power battery module and the fuel cell engine are sequentially arranged on the frame along the running direction of the vehicle.

5. The fuel cell garbage truck of claim 4, wherein, The frame is further provided with a cooling system, the cooling system comprises a motor cooling module, a stack cooling module and a power battery cooling module, the fuel cell engine is cooled by the motor cooling module, the power battery module is cooled by the power battery cooling module, and the driving system is cooled by the stack cooling module.

6. The fuel cell garbage truck of claim 1, wherein, The frame is further provided with a braking system, the braking system comprises an electric air compressor assembly, a drying tank, an air cylinder and a braking assembly which are communicated in sequence, external air is converted into compressed air by the electric air compressor assembly and then transmitted to the drying tank for drying, the compressed air treated by the drying tank is transmitted to the air cylinder, and the air cylinder delivers compressed air to the braking assembly.

7. The fuel cell garbage truck of claim 1, wherein, The tail of the frame is further provided with a rubber ground dragging belt, and static electricity generated by the vehicle is transmitted to the ground by the rubber ground dragging belt.

8. The fuel cell garbage truck of claim 1, wherein, The driving system is an integrated electric drive axle system.

9. The fuel cell garbage truck of claim 1, wherein, The frame is further provided with an integrated controller, and the integrated controller is electrically connected with the fuel cell engine, the power battery module and the driving system.

10. The fuel cell garbage truck of claim 1, wherein, The frame is a single-layer beam structure with variable web height.

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