Chassis arrangement structure of hydrogen fuel light truck

Abstract

The utility model relates to the technical field of fuel cell system vehicles, and discloses a chassis arrangement structure of a hydrogen fuel light truck, which comprises a frame, a hydrogen storage tank and a first radiator, a second radiator, a storage battery, a steering pump, an air compressor, a water pump, a fuel cell system, a low-voltage fuse box, a boost DC-DC converter and a data collector are installed between the first cross beam and the second cross beam, and a power battery, a four-in-one controller, an electric drive axle and a heat management unit are installed between the second cross beam and the third cross beam. A step-down DC-DC converter and a high-voltage junction box are installed between the third cross beam and the fourth cross beam, and a hydrogen storage tank and a first radiator are both installed on the outer side of the longitudinal beam. The utility model has the beneficial effects that through the innovative arrangement of the structure, the internal space of the frame is effectively saved, different cooling systems are separately arranged in different spaces, the heat dissipation effect is ensured, the overall space utilization rate of the chassis is high, the gravity center of the whole vehicle is low, and the maintainability is good.

Description

Technical Field

[0001] The utility model relates to the technical field of fuel cell system vehicles, in particular to a chassis arrangement structure of a hydrogen fuel light truck. Background Art

[0002] Countries around the world are increasingly demanding low-carbon, clean and renewable energy. Hydrogen energy, as a high-quality intermediate energy carrier with abundant sources and convenient conversion, has been widely used in modern transportation, energy, construction, industry, communications and other fields. The 13th Five-Year Plan for the Development of National Strategic Emerging Industries clearly states that it is necessary to systematically promote the development and industrialization of fuel cell system vehicles. Hydrogen fuel cell system vehicles are an important part of the modern hydrogen energy industry and the only way for mankind to get rid of the constraints of fossil energy and move towards green, clean and sustainable development.

[0003] For hydrogen fuel cell system trucks, the existing models are mostly arranged in such a way that the hydrogen storage system is installed in front of the cargo box behind the cab, the drive motor is mid-mounted and rear-wheel drive, and the cooling systems work in series. This arrangement will reduce the cargo space, the vehicle hydrogen storage capacity is low, and the cooling system is difficult to meet the cooling needs of various components. Therefore, a new chassis layout structure for hydrogen fuel light trucks is urgently needed to solve the above problems. Utility Model Content

[0004] The purpose of this application is to provide a chassis layout structure for a hydrogen fuel light truck to fully utilize the chassis space and improve the heat dissipation effect.

[0005] The purpose of this application is achieved through the following technical solutions:

[0006] A chassis layout structure of a hydrogen fuel light truck includes: a frame, a hydrogen storage tank and a first radiator, the frame includes two longitudinal beams and a first crossbeam, a second crossbeam, a third crossbeam and a fourth crossbeam installed between the longitudinal beams in sequence from front to back, a second radiator, a battery, a steering pump, an air compressor, a water pump, a fuel cell system, a low-voltage fuse box, a step-up DC-DC converter and a data collector are installed between the first crossbeam and the second crossbeam, a power battery, a four-in-one controller, an electric drive axle and a thermal management unit are installed between the second crossbeam and the third crossbeam, a step-down DC-DC converter and a high-voltage junction box are installed between the third crossbeam and the fourth crossbeam, and the hydrogen storage tank and the first radiator are both installed on the outside of the longitudinal beam.

[0007] In some embodiments of the present application, a first expansion water tank is further included, wherein a water outlet of the first expansion water tank is connected to a water inlet of the fuel cell system, the water outlet of the fuel cell system is connected to a water inlet of the first radiator, the water outlet of the first radiator is connected to a water inlet of the fuel cell system, the exhaust port of the first radiator is connected to an air inlet of the expansion water tank, and the exhaust port of the fuel cell system is connected to an air inlet of the expansion water tank.

[0008] In some embodiments of the present application, a second expansion water tank is further included, and the water outlet of the power battery and the water outlet of the second expansion water tank are both connected to the water inlet of the thermal management unit, and the water outlet of the thermal management unit is connected to the water inlet of the power battery.

[0009] In some embodiments of the present application, a third expansion water tank is further included, and the water outlet of the second radiator and the water outlet of the third expansion water tank are both connected to the water inlet of the electric drive axle, the water outlet of the electric drive axle is connected to the water inlet of the second radiator, and the exhaust port of the second radiator is connected to the air inlet of the third expansion water tank.

[0010] In some embodiments of the present application, the second radiator is located behind the first cross beam, and the battery, the steering pump and the air compressor are arranged in sequence from left to right behind the second radiator. The water pump is arranged to the right rear of the air compressor, and the fuel cell system, the low-voltage fuse box, the boost DC-DC converter and the data acquisition device are all arranged behind the water pump.

[0011] In some embodiments of the present application, a first bracket is also included, which is a "J"-shaped bracket. The first bracket is installed between the longitudinal beams and is located above the fuel cell system. The low-voltage fuse box is installed at the front of the first bracket. The boost DC-DC converter is centrally installed at the rear of the first bracket. The data acquisition device is left-installed at the rear of the first bracket.

[0012] In some embodiments of the present application, the power battery is located behind the second crossbeam, the four-in-one controller is located behind the power battery, the electric drive axle is located behind the four-in-one controller, and the thermal management unit is located behind the electric drive axle.

[0013] In some embodiments of the present application, a second bracket is further included, which is an inverted "L"-shaped bracket. The second bracket is installed on the fourth beam and is located in front of the fourth beam. The step-down DC-DC converter and the high-voltage distribution box are both installed on the second bracket.

[0014] In some embodiments of the present application, a third bracket is further included, wherein the third bracket is a "T"-shaped bracket, and the first radiator is installed on the third bracket.

[0015] In some embodiments of the present application, there are two hydrogen storage tanks and two first radiators, the two hydrogen storage tanks are respectively installed on the outsides of the two longitudinal beams, and the two first radiators are respectively installed on the outsides of the two longitudinal beams.

[0016] The chassis layout structure of the hydrogen fuel light truck of the present application can effectively save space inside the frame by externally placing the hydrogen storage tank and the first radiator, which is convenient for the placement of other structures. Different structures are installed between the multiple crossbeams of the frame, so that different cooling systems can be arranged separately in different spaces, ensuring the air intake volume and air intake temperature of the heat dissipation components while adjusting different heat dissipation powers to meet the heat dissipation requirements of multiple systems. The overall space utilization rate of the chassis is high, the center of gravity of the vehicle is low, and the maintainability is good. The power battery, battery thermal management unit, and motor controller are all located below the upper plane of the frame and inside the frame, making full use of the space that is difficult to use in traditional layout schemes. The position is conducive to component protection and makes the space on the outer side of the frame and between the front and rear wheel groups to be reserved for the hydrogen storage bottle group of the hydrogen storage system to the maximum extent, thereby increasing the hydrogen storage capacity and improving the vehicle's endurance. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a schematic diagram of the chassis arrangement structure of the present application;

[0018] Figure 2 is a schematic diagram of a cooling system of the present application;

[0019] Figure 3 is a schematic structural diagram of the first bracket of the present application;

[0020] Figure 4 It is a structural schematic diagram of the second bracket of the present application.

[0021] In the figure, 1, vehicle frame; 101, first crossbeam; 102, second crossbeam; 103, third crossbeam; 104, fourth crossbeam; 105, longitudinal beam; 2, hydrogen storage tank; 3, first radiator; 4, second radiator; 5, battery; 6, steering pump; 7, air compressor; 8, water pump; 9, fuel cell system; 10, power battery; 11, four-in-one controller; 12, electric drive axle; 13, thermal management unit; 14, first expansion water tank; 15, second expansion water tank; 16, third expansion water tank; 17, first bracket; 18, second bracket; 19, third bracket. DETAILED DESCRIPTION

[0022] The following is a further detailed description of the specific implementation of the present invention in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0023] In the description of the present application, it should be understood that the terms "upper", "lower", "top", "bottom", "inner", "outer", etc. used in the present application to indicate the orientation or position relationship is based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0024] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0025] like Figure 1 , 2 As shown, the embodiment of the present application proposes a chassis layout structure of a hydrogen fuel light truck, including: a frame 1, a hydrogen storage tank 2 and a first radiator 3, the frame 1 includes two longitudinal beams 105 and a first crossbeam 101, a second crossbeam 102, a third crossbeam 103 and a fourth crossbeam 104 installed between the longitudinal beams 105 from front to back, a second radiator 4, a battery 5, a steering pump 6, an air compressor 7, a water pump 8, a fuel cell system 9, a low-voltage fuse box, a boost DC-DC converter and a data collector are installed between the first crossbeam 101 and the second crossbeam 102, a power battery 10, a four-in-one controller 11, an electric drive axle 12 and a thermal management unit 13 are installed between the second crossbeam 102 and the third crossbeam 103, a step-down DC-DC converter and a high-voltage junction box are installed between the third crossbeam 103 and the fourth crossbeam 104, and the hydrogen storage tank 2 and the first radiator 3 are both installed on the outside of the longitudinal beam 105.

[0026] Based on the above technical scheme, the chassis layout structure of the hydrogen fuel light truck of the present application can effectively save the space inside the frame 1 by externalizing the hydrogen storage tank 2 and the first radiator 3, which is convenient for the placement of other structures. Different structures are installed between the multiple crossbeams of the frame 1, so that different cooling systems are arranged separately in different spaces, ensuring the air intake and air intake temperature of the heat dissipation components while adjusting different heat dissipation powers to meet the heat dissipation requirements of multiple systems. The overall space utilization rate of the chassis is high, the center of gravity of the whole vehicle is low, and the maintainability is good. The power battery 10, the battery thermal management unit 13, and the motor controller are all located below the upper plane of the frame 1 and inside the frame 1, making full use of the space that is difficult to use in the traditional layout scheme, and the position is conducive to the protection of components and makes the space on the outer side of the frame 1 and between the front and rear wheel groups to the maximum extent. The hydrogen storage bottle group of the hydrogen storage system is left to increase the hydrogen storage capacity to increase the endurance of the whole vehicle. Preferably, the battery 5 uses a 24V battery 5, which can provide stable and efficient power supply.

[0027] In some embodiments of the present application, Figure 1 , 2 As shown, it also includes a first expansion water tank 14, the water outlet of the first expansion water tank 14 is connected to the water inlet of the fuel cell system 9, the water outlet of the fuel cell system 9 is connected to the water inlet of the first radiator 3, the water outlet of the first radiator 3 is connected to the water inlet of the fuel cell system 9, the exhaust port of the first radiator 3 is connected to the air inlet of the expansion water tank, and the exhaust port of the fuel cell system 9 is connected to the air inlet of the expansion water tank. The fuel cell system 9 is cooled by the first expansion water tank 14, and the specific cooling water circuit is as follows: the coolant flows from the water outlet of the first expansion water tank 14 to the water inlet of the fuel cell system 9, the water outlet of the fuel cell system 9 passes through a food-grade silicone tube along the upper wing surface of the frame longitudinal beam, is diverted by a three-way silicone tube, and flows to the water inlet of the first radiator 3 at the rear, and then the water outlet of the first radiator 3 is merged through the three-way silicone tube and then flows to the water inlet of the fuel cell system 9; the exhaust port of the first radiator 3 is merged through another three-way silicone tube and then leads to the air inlet of the first expansion water tank 14; the exhaust port of the fuel cell system 9 is connected to the deionizer by a silicone tube and then leads to the air inlet of the first expansion water tank 14.

[0028] In some embodiments of the present application, Figure 1 , 2 As shown, a second expansion water tank 15 is also included, and the water outlet of the power battery 10 and the water outlet of the second expansion water tank 15 are both connected to the water inlet of the thermal management unit 13, and the water outlet of the thermal management unit 13 is connected to the water inlet of the power battery 10. The second expansion water tank 15 is used to cool the power battery 10, and the specific cooling water path is: the water outlet of the power battery 10 and the water inlet of the second expansion water tank 15 are connected to the water inlet of the thermal management unit 13 after merging through a tee, and the water outlet of the thermal management unit 13 is connected to the water inlet of the power battery 10.

[0029] In some embodiments of the present application, Figure 1 , 2 As shown, the third expansion water tank 16 is also included, the water outlet of the second radiator 4 and the water outlet of the third expansion water tank 16 are both connected to the water inlet of the electric drive axle 12, the water outlet of the electric drive axle 12 is connected to the water inlet of the second radiator 4, and the exhaust port of the second radiator 4 is connected to the air inlet of the third expansion water tank 16. The third expansion water tank 16 is used to cool the drive motor, and the specific cooling water circuit is: the water outlet of the second radiator 4 and the water outlet of the third expansion water tank 16 are connected to the water inlet of the drive motor after merging through a tee; the water outlet of the drive motor is connected to the water inlet of the second radiator 4 after passing through a water pump; the exhaust port of the second radiator 4 is connected to the air inlet of the third expansion water tank 16.

[0030] In some embodiments of the present application, Figure 1 As shown, the second radiator 4 is located behind the first crossbeam 101, and the battery 5, the steering pump 6 and the air compressor 7 are arranged in sequence from left to right behind the second radiator 4, the water pump 8 is arranged to the right rear of the air compressor 7, and the fuel cell system 9, the low-voltage fuse box, the boost DC-DC converter and the data collector are all arranged behind the water pump 8. The above structural layout is more reasonable and compact, and the integration of the chassis structure is further improved, making the layout structure of the chassis more compact and reliable.

[0031] Specifically, Figure 1 , 3 As shown, the first bracket 17 is a "J"-shaped bracket, which is installed between the longitudinal beams 105 and located above the fuel cell system 9, the low-voltage fuse box is installed at the front of the first bracket 17, the boost DC-DC converter is centrally installed at the rear of the first bracket 17, and the data collector is left-installed at the rear of the first bracket 17. The first bracket 17 can be used as a mounting carrier for multiple structures, and it is arranged across two longitudinal beams 105, which can effectively utilize the space above the fuel cell system 9, and the mounting structure of the low-voltage fuse box, the boost DC-DC converter and the data collector is also more compact and reasonable.

[0032] More specifically, Figure 1As shown, the power battery 10 is located behind the second crossbeam 102, the four-in-one controller 11 is located behind the power battery 10, the electric drive axle 12 is located behind the four-in-one controller 11, and the thermal management unit 13 is located behind the electric drive axle 12. The power battery 10, the four-in-one controller 11, the electric drive axle 12 and the thermal management unit 13 are sequentially arranged between the second crossbeam 102 and the third crossbeam 103 from front to back, with a compact and reliable structure, and are separated from other structures by the second crossbeam 102 and the third crossbeam 103 to form independent spaces, which is conducive to heat dissipation.

[0033] In some embodiments of the present application, Figure 1 , 4 As shown, the chassis further includes a second bracket 18, which is an inverted "L"-shaped bracket. The second bracket 18 is mounted on the fourth crossbeam 104 and is located in front of the fourth crossbeam 104. The step-down DC-DC converter and the high-voltage junction box are both mounted on the second bracket 18. The second bracket 18 can be used as a mounting carrier for the step-down DC-DC converter and the high-voltage junction box, further improving the installation integration and making the chassis structure more compact and reliable.

[0034] In some embodiments of the present application, Figure 1 As shown, the third bracket 19 is also included, and the third bracket 19 is a "T"-shaped bracket, and the first radiator 3 is installed on the third bracket 19. The third bracket 19 can be used as a mounting carrier for the first radiator 3, avoiding the first radiator 3 being directly mounted on the longitudinal beam 105, and the installation is more convenient and less likely to cause interference. The first radiator 3 is installed at the top position of the T-shape, and the connection is reliable.

[0035] In some embodiments of the present application, Figure 1 As shown, there are two hydrogen storage tanks 2 and two first radiators 3, and the two hydrogen storage tanks 2 are respectively installed on the outside of the two longitudinal beams 105, and the two first radiators 3 are respectively installed on the outside of the two longitudinal beams 105. The hydrogen storage tank 2 and the first radiator 3 are installed symmetrically on the left and right, which can balance the weight on both sides of the frame 1, make the chassis more stable, and further ensure the hydrogen storage capacity and heat dissipation performance. Among them, the hydrogen storage tank 2 is preferably arranged on the outer side of the vehicle longitudinal beam 105 and between the front and rear wheels, with a larger installation space, which can further improve the hydrogen storage capacity; the first radiator 3 is preferably arranged behind the rear wheel, which can take into account both heat dissipation and space, and the layout structure is more reasonable.

[0036] In summary, the chassis layout structure of the hydrogen fuel light truck of the present application can effectively save the space inside the frame 1 by externalizing the hydrogen storage tank 2 and the first radiator 3, which is convenient for the placement of other structures. Different structures are installed between the multiple cross beams of the frame 1, so that different cooling systems can be arranged separately in different spaces, ensuring the air intake volume and air intake temperature of the heat dissipation components while adjusting different heat dissipation powers to meet the heat dissipation requirements of multiple systems. The overall space utilization rate of the chassis is high, the center of gravity of the whole vehicle is low, and the maintainability is good. The power battery 10, the battery thermal management unit 13, and the motor controller are all located below the upper plane of the frame 1 and inside the frame 1, making full use of the space that is difficult to use in traditional layout schemes. The position is conducive to component protection and makes the space on the outer side of the frame 1 and between the front and rear wheel groups to be reserved for the hydrogen storage bottle group of the hydrogen storage system to the maximum extent, thereby increasing the hydrogen storage capacity to increase the cruising range of the whole vehicle.

[0037] The above is only a preferred implementation of the present application. It should be pointed out that for ordinary technicians in this technical field, several improvements and substitutions can be made without departing from the technical principles of the present application. These improvements and substitutions should also be regarded as the scope of protection of the present application.

Claims

1. A chassis layout structure for a hydrogen fuel light truck, It is characterized in that include: A vehicle frame, a hydrogen storage tank and a first radiator, wherein the vehicle frame comprises two longitudinal beams and a first crossbeam, a second crossbeam, a third crossbeam and a fourth crossbeam which are installed in sequence from front to back between the longitudinal beams; a second radiator, a battery, a steering pump, an air compressor, a water pump, a fuel cell system, a low-voltage fuse box, a step-up DC-DC converter and a data collector are installed between the first crossbeam and the second crossbeam; a power battery, a four-in-one controller, an electric drive axle and a thermal management unit are installed between the second crossbeam and the third crossbeam; a step-down DC-DC converter and a high-voltage junction box are installed between the third crossbeam and the fourth crossbeam; and the hydrogen storage tank and the first radiator are both installed on the outside of the longitudinal beams.

2. The chassis layout structure of the hydrogen fuel light truck according to claim 1, It is characterized in that It also includes a first expansion water tank, a water outlet of the first expansion water tank is connected to the water inlet of the fuel cell system, the water outlet of the fuel cell system is connected to the water inlet of the first radiator, the water outlet of the first radiator is connected to the water inlet of the fuel cell system, the exhaust port of the first radiator is connected to the air inlet of the expansion water tank, and the exhaust port of the fuel cell system is connected to the air inlet of the expansion water tank.

3. The chassis layout structure of the hydrogen fuel light truck according to claim 1, It is characterized in that It also includes a second expansion water tank, the water outlet of the power battery and the water outlet of the second expansion water tank are both connected to the water inlet of the thermal management unit, and the water outlet of the thermal management unit is connected to the water inlet of the power battery.

4. The chassis layout structure of the hydrogen fuel light truck according to claim 1, It is characterized in that It also includes a third expansion water tank, the water outlet of the second radiator and the water outlet of the third expansion water tank are both connected to the water inlet of the electric drive axle, the water outlet of the electric drive axle is connected to the water inlet of the second radiator, and the exhaust port of the second radiator is connected to the air inlet of the third expansion water tank.

5. The chassis layout structure of the hydrogen fuel light truck according to claim 1, It is characterized in that The second radiator is located behind the first crossbeam, and the battery, the steering pump and the air compressor are arranged in sequence from left to right behind the second radiator. The water pump is arranged to the right rear of the air compressor, and the fuel cell system, the low-voltage fuse box, the boost DC-DC converter and the data collector are all arranged behind the water pump.

6. The chassis layout structure of the hydrogen fuel light truck according to claim 5, It is characterized in that It also includes a first bracket, which is a "J"-shaped bracket. The first bracket is installed between the longitudinal beams and is located above the fuel cell system. The low-voltage fuse box is installed at the front of the first bracket, the boost DC-DC converter is centrally installed at the rear of the first bracket, and the data collector is left-installed at the rear of the first bracket.

7. The chassis layout structure of the hydrogen fuel light truck according to claim 1, It is characterized in that The power battery is located behind the second crossbeam, the four-in-one controller is located behind the power battery, the electric drive axle is located behind the four-in-one controller, and the thermal management unit is located behind the electric drive axle.

8. The chassis layout structure of the hydrogen fuel light truck according to claim 1, It is characterized in that It also includes a second bracket, which is an inverted "L"-shaped bracket. The second bracket is installed on the fourth beam and is located in front of the fourth beam. The step-down DC-DC converter and the high-voltage junction box are both installed on the second bracket.

9. The chassis layout structure of the hydrogen fuel light truck according to claim 1, It is characterized in that It also includes a third bracket, which is a "T"-shaped bracket, and the first radiator is installed on the third bracket.

10. The chassis layout structure of the hydrogen fuel light truck according to claim 1, It is characterized in that There are two hydrogen storage tanks and two first radiators. The two hydrogen storage tanks are respectively installed on the outsides of the two longitudinal beams, and the two first radiators are respectively installed on the outsides of the two longitudinal beams.

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