Fuel cell system and vehicle chassis

Abstract

The utility model relates to the technical field of engineering vehicles, in particular to a fuel cell system and a vehicle chassis, and the fuel cell system comprises a fuel cell and a hydrogen storage assembly which are arranged on the vehicle chassis; the hydrogen storage assembly comprises a mounting frame and a hydrogen storage tank which is arranged in the mounting frame and is used for providing hydrogen for the fuel cell; the bottom of the mounting frame is connected with a bearing surface formed on a vehicle chassis, and the hydrogen storage tank is positioned above the bearing surface; a heat dissipation assembly is arranged at the top of the mounting frame and is connected with the fuel cell through an arranged liquid cooling pipeline. The hydrogen storage system and the heat dissipation assembly are arranged above the bearing face of the vehicle chassis, limitation of space on system power can be removed, the heat dissipation performance can be enhanced, and the system is prevented from being overheated.

Description

Technical Field

[0001] The present application relates to the technical field of engineering vehicles, and in particular to a fuel cell system and a vehicle chassis. Background Art

[0002] Fuel cell tractors are currently experiencing rapid iteration, with mass installation of high-power fuel cell systems of 150kW and above becoming a trend. Existing technologies typically place the fuel cell and hydrogen storage system at the bottom of the chassis. Due to the extremely compact space at the bottom of the tractor chassis, it is difficult to accommodate a high-power hydrogen storage system, which limits the growth of fuel cell power. Furthermore, high-power fuel cell systems generate significant heat during operation, and due to the limited assembly space, existing heat dissipation components can only be smaller. This results in poor overall heat dissipation capacity, making the system prone to overheating and resulting in a high failure rate. Utility Model Content

[0003] The purpose of this application is to provide a fuel cell system and vehicle chassis, which arranges the hydrogen storage system and heat dissipation components above the load-bearing surface of the vehicle chassis, which not only removes the space limitation on the system power, but also enhances the heat dissipation performance and prevents the system from overheating.

[0004] The embodiment of the present application is implemented as follows:

[0005] On the one hand, an embodiment of the present application provides a fuel cell system, comprising a fuel cell and a hydrogen storage assembly arranged on a vehicle chassis; the hydrogen storage assembly comprises a mounting frame and a hydrogen storage tank arranged in the mounting frame and used to provide hydrogen to the fuel cell; the bottom of the mounting frame is connected to a bearing surface formed on the vehicle chassis, and the hydrogen storage tank is located above the bearing surface; a heat dissipation assembly is arranged on the top of the mounting frame, and the heat dissipation assembly is connected to the fuel cell through a liquid cooling pipe.

[0006] As an optional embodiment, the heat dissipation assembly includes a heat dissipation fan arranged on a mounting frame, and a cooling water tank connected to the liquid cooling pipe; the arrangement plane of the heat dissipation fan is parallel to the arrangement plane of the cooling water tank, and the air outlet of the heat dissipation fan is close to the cooling water tank.

[0007] As an optional embodiment, the heat dissipation assembly further includes a tray frame, and the cooling water tank and the heat dissipation fan are both mounted on the tray frame; the tray frame is detachably connected to the mounting frame.

[0008] As an optional embodiment, the tray frame is horizontally arranged on the upper part of the installation frame, and the cooling water tank is horizontally arranged in the tray frame; the cooling fan is arranged on the upper surface of the cooling water tank.

[0009] As an optional embodiment, there are multiple cooling fans, which are arranged at intervals on the upper surface of the cooling water tank.

[0010] As an optional implementation, the projection of the cooling water tank on the vehicle chassis covers the projection of the hydrogen storage tank on the vehicle chassis.

[0011] As an optional embodiment, the pallet frame includes two parallel and spaced longitudinal beams, and a cross beam arranged between the two longitudinal beams. There are multiple cross beams, which are arranged at intervals along the extension direction of the longitudinal beams.

[0012] As an optional embodiment, the pallet frame is provided with a plurality of lifting rings arranged at intervals.

[0013] On the other hand, an embodiment of the present application provides a vehicle chassis, including the above-mentioned fuel cell system, wherein a cab is provided on the vehicle chassis, and the mounting frame of the fuel cell system is located behind the cab.

[0014] As an optional implementation, the height of the mounting frame is consistent with the height of the cab, and the width of the mounting frame is consistent with the width of the cab.

[0015] The beneficial effects of the embodiments of the present application include:

[0016] The embodiment of the present application provides a fuel cell system, including a fuel cell and a hydrogen storage assembly arranged on a vehicle chassis; the hydrogen storage assembly of the embodiment of the present application includes a mounting frame and a hydrogen storage tank arranged in the mounting frame and used to provide hydrogen to the fuel cell; the bottom of the mounting frame of the embodiment of the present application is connected to the bearing surface formed on the vehicle chassis, and the hydrogen storage tank is located above the bearing surface; a heat dissipation assembly is arranged on the top of the mounting frame, and the heat dissipation assembly is connected to the fuel cell through a liquid cooling pipe. The embodiment of the present application arranges the mounting frame above the bearing surface of the vehicle chassis, which does not occupy the space inside the vehicle chassis, so that a larger mounting frame can be arranged to meet the hydrogen supply requirements of high-power fuel cells. In addition, the embodiment of the present application arranges the heat dissipation assembly above the mounting frame. Since there are no other structural parts above the mounting frame to interfere, a larger heat dissipation assembly can be arranged to provide a stronger heat dissipation performance for the fuel cell.

[0017] This embodiment of the present application provides a vehicle chassis including the aforementioned fuel cell system. A cab is disposed on the vehicle chassis, and a mounting frame for the fuel cell system is located behind the cab. This embodiment of the present application arranges the hydrogen storage system and heat dissipation assembly above the load-bearing surface of the vehicle chassis. This not only eliminates spatial limitations on system power but also enhances heat dissipation performance, preventing system overheating. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following is a brief introduction to the drawings required for use in the embodiments. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without creative work.

[0019] Figure 1 This is one of the structural diagrams of the fuel cell system according to an embodiment of the present application;

[0020] Figure 2 This is the second structural diagram of the fuel cell system according to an embodiment of the present application;

[0021] Figure 3 This is the third structural diagram of the fuel cell system according to an embodiment of the present application.

[0022] icon:

[0023] 100-installation frame; 101-hydrogen storage tank; 102-liquid cooling pipe; 103-cooling fan; 104-cooling water tank; 105-pallet frame; 106-longitudinal beam; 107-cross beam; 108-lifting ring. DETAILED DESCRIPTION

[0024] To make the objectives, technical solutions, and advantages of the embodiments of the present application more clear, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Generally, the components of the embodiments of the present application described and shown in the drawings herein can be arranged and designed in various different configurations.

[0025] Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the present application for protection, but merely represents selected embodiments of the present application. All other embodiments obtained by persons of ordinary skill in the art based on the embodiments in the present application without creative work are within the scope of protection of the present application.

[0026] 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 or explained in subsequent drawings. In addition, the terms "first," "second," "third," etc. are used only to distinguish the descriptions and are not to be understood as indicating or implying relative importance.

[0027] It should also be noted that, in the description of this application, unless otherwise expressly specified or limited, the terms "disposed," "installed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on the specific circumstances.

[0028] Fuel cell tractors are currently experiencing rapid iteration, with mass installation of high-power fuel cell systems of 150kW and above becoming a trend. Existing technologies typically place the fuel cell and hydrogen storage system at the bottom of the chassis. Due to the extremely compact space at the bottom of the tractor chassis, it is difficult to accommodate a high-power hydrogen storage system, which limits the growth of fuel cell power. Furthermore, high-power fuel cell systems generate significant heat during operation, and due to the limited assembly space, existing heat dissipation components can only be smaller. This results in poor overall heat dissipation capacity, making the system prone to overheating and resulting in a high failure rate.

[0029] To solve the above technical problems, an embodiment of the present application provides a fuel cell system and a vehicle chassis.

[0030] Reference Figure 1 、 Figure 2 as well as Figure 3 As shown, an embodiment of the present application provides a fuel cell system, including a fuel cell and a hydrogen storage assembly arranged on a vehicle chassis; the hydrogen storage assembly includes a mounting frame 100 and a hydrogen storage tank 101 arranged in the mounting frame 100 and used to provide hydrogen to the fuel cell; the bottom of the mounting frame 100 is connected to a bearing surface formed on the vehicle chassis, and the hydrogen storage tank 101 is located above the bearing surface; a heat dissipation assembly is arranged on the top of the mounting frame 100, and the heat dissipation assembly is connected to the fuel cell through a liquid cooling pipe 102.

[0031] It should be noted that the vehicle chassis of the embodiment of the present application can be used as a tractor chassis, or other types of commercial vehicle chassis, and those skilled in the art can make a choice according to their needs.

[0032] The heat dissipation assembly provided in the embodiment of the present application is arranged on the top of the mounting frame 100, and the bottom of the mounting frame 100 is connected to the bearing surface of the vehicle chassis. Therefore, the hydrogen storage tank 101 and the heat dissipation assembly both have a large layout space.

[0033] The fuel cell system provided in an embodiment of the present application includes a fuel cell and a hydrogen storage assembly arranged on a vehicle chassis.

[0034] It should be noted that the hydrogen storage assembly of the embodiment of the present application is arranged above the load-bearing surface of the vehicle chassis. The load-bearing surface is defined as the upper surface of the vehicle chassis. In other words, the hydrogen storage assembly of the embodiment of the present application is not arranged below the load-bearing surface of the vehicle chassis. In order to avoid occupying a large amount of load-bearing space on the upper part of the vehicle chassis, the fuel cell can be embedded in the frame of the vehicle chassis, which is beneficial to lowering the center of gravity of the vehicle and improving the handling performance of the vehicle chassis.

[0035] The hydrogen storage assembly of the embodiment of the present application includes a mounting frame 100 and a hydrogen storage tank 101 disposed in the mounting frame 100 and used to provide hydrogen to the fuel cell.

[0036] It should be noted that the mounting frame 100 is a rectangular metal frame structure, for example, a rectangular frame structure made of carbon steel or stainless steel. It defines an installation space within which the hydrogen storage tank 101 is disposed. The mounting frame 100 supports and protects the hydrogen storage tank 101. There may be multiple hydrogen storage tanks 101, and the specific number can be determined by those skilled in the art based on specific needs.

[0037] Exemplarily, six hydrogen storage tanks 101 are provided in the mounting frame 100 , and the volume of the hydrogen storage tanks 101 is 385 L.

[0038] The bottom of the mounting frame 100 of the embodiment of the present application is connected to the bearing surface formed on the vehicle chassis, and the hydrogen storage tank 101 is located above the bearing surface; a heat dissipation component is arranged on the top of the mounting frame 100, and the heat dissipation component is connected to the fuel cell through a liquid cooling pipe 102.

[0039] It should be noted that a circulating water channel is provided inside the fuel cell. The circulating water channel has a water inlet and a water outlet. Both the water inlet and the water outlet are connected to the liquid cooling pipe 102, so that the coolant in the heat dissipation component can circulate between the heat dissipation component and the fuel cell, thereby cooling the fuel cell and preventing the fuel cell temperature from being too high.

[0040] In the embodiment of the present application, the mounting frame 100 is disposed above the load-bearing surface of the vehicle chassis, without occupying the space inside the vehicle chassis, thereby enabling a larger mounting frame 100 to be disposed to meet the hydrogen supply requirements of a high-power fuel cell.

[0041] In addition, the embodiment of the present application sets the heat dissipation assembly above the mounting frame 100. Since there is no interference from other structural parts above the mounting frame 100, a larger heat dissipation assembly can be set to provide stronger heat dissipation performance for the fuel cell.

[0042] Reference Figure 1 、 Figure 2As shown, as an optional embodiment, the heat dissipation assembly includes a heat dissipation fan 103 arranged on the mounting frame 100, and a cooling water tank 104 connected to the liquid cooling pipe 102; the arrangement plane of the heat dissipation fan 103 is parallel to the arrangement plane of the cooling water tank 104, and the air outlet of the heat dissipation fan 103 is close to the cooling water tank 104.

[0043] It should be noted that the heat dissipation assembly implemented in this application includes a cooling water tank 104, which stores coolant. The liquid cooling pipe 102 is connected to a drive module, which can drive the coolant in the cooling water tank 104 to flow in the circulating water channel between the cooling water tank 104 and the fuel cell to achieve cooling.

[0044] It should be noted that the air outlet of the cooling fan 103 is close to and faces the cooling water tank 104 , and the cooling fan 103 drives the air flow to achieve cooling through convection.

[0045] It should be noted that the projection area of ​​the cooling fan 103 on the cooling water tank 104 is at least one fifth of the cooling water tank 104. The cooling water tank 104 and the cooling fan 103 with greater power can be arranged according to the need for heat dissipation power.

[0046] Furthermore, a heat dissipation tooth plate group can be set on the surface of the cooling water tank 104. The heat dissipation tooth plate group consists of a plurality of heat dissipation tooth plates arranged at intervals. The setting of the heat dissipation tooth plates can increase the heat dissipation area of ​​the cooling water tank 104, which is beneficial to improving the heat dissipation performance.

[0047] Reference Figure 1 、 Figure 2 As shown, as an optional embodiment, the heat dissipation assembly further includes a tray frame 105 , and the cooling water tank 104 and the heat dissipation fan 103 are both mounted on the tray frame 105 ; the tray frame 105 is detachably connected to the mounting frame 100 .

[0048] It should be noted that the heat dissipation assembly of the present application also includes a tray frame 105, which carries a cooling water tank 104 and a cooling fan 103, as well as liquid cooling pipes 102, fan wiring harness, and other structures. The tray frame 105 not only provides framework support for the above structures, but also facilitates integrated assembly to form a standalone module.

[0049] Furthermore, the pallet frame 105 of the embodiment of the present application is provided with a plurality of lifting rings 108 arranged at intervals.

[0050] The embodiment of the present application can be assembled offline by installing the cooling water tank 104, cooling fan 103, liquid cooling pipe 102, fan wiring harness and related connecting brackets on the pallet frame 105 to form an independent module. The entire independent module is hoisted as a whole to the top of the installation frame 100 through the lifting ring 108, and then the entire hydrogen supply system is hoisted as a whole to the chassis of the vehicle. The above installation method greatly improves the assembly efficiency of batch vehicles, reduces the safety risks of production line workers, and improves the convenience of after-sales maintenance, and has great engineering feasibility.

[0051] Reference Figure 1 As shown, as an optional embodiment, the tray frame 105 is horizontally arranged on the upper part of the installation frame 100, and the cooling water tank 104 is horizontally arranged in the tray frame 105; the cooling fan 103 is arranged on the upper surface of the cooling water tank 104.

[0052] It should be noted that in this embodiment of the present application, the tray frame 105 is arranged horizontally above the mounting frame 100. This horizontal arrangement avoids increasing the vehicle's height. Furthermore, a larger tray frame 105 can be installed, thereby accommodating a larger cooling water tank 104 to meet the hydrogen supply requirements of a high-power fuel cell.

[0053] In addition, the embodiment of the present application sets the heat dissipation assembly horizontally above the mounting frame 100. Since there is no interference from other structural parts above the mounting frame 100, a larger heat dissipation assembly can be set to provide stronger heat dissipation performance for the fuel cell.

[0054] As an optional implementation, there are multiple cooling fans 103 , which are arranged at intervals on the upper surface of the cooling water tank 104 .

[0055] It should be noted that the number of the heat dissipation fans 103 in the embodiment of the present application can be selected by those skilled in the art according to needs, and there is no special limitation on this.

[0056] Reference Figure 1 As shown, illustratively, the present application sets 12 cooling fans 103 above the cooling water tank, and the 12 cooling fans 103 are arranged in an array.

[0057] Reference Figure 1 As shown, as an optional embodiment, the projection of the cooling water tank 104 on the vehicle chassis covers the projection of the hydrogen storage tank 101 on the vehicle chassis.

[0058] The projection of the cooling water tank 104 in the embodiment of the present application on the horizontal plane can cover the projection of the hydrogen storage tank 101, that is, the cooling water tank 104 in the embodiment of the present application is provided with a larger heat dissipation surface, which facilitates the heat dissipation of the cooling water tank 104.

[0059] Reference Figure 2As shown, as an optional embodiment, the pallet frame 105 includes two parallel and spaced longitudinal beams 106 and a cross beam 107 arranged between the two longitudinal beams 106 . There are multiple cross beams 107 , which are arranged at intervals along the extension direction of the longitudinal beams 106 .

[0060] It should be noted that the tray frame 105 of the embodiment of the present application comprises longitudinal beams 106 and transverse beams 107. These beams 106 and 107 are channel steel structures, with long, weight-reducing holes and U-shaped slots for lightweighting. Furthermore, the transverse beams 107 and 106 each feature standard holes with a diameter of 13 mm for installing the various orientations of the liquid cooling pipes 102 and fan wiring harnesses. For example, the height of the longitudinal beams 106 is 118 mm, which effectively meets the air intake requirements of the suction-type cooling fan 103 while also preventing hot air backflow from the blower-type fan.

[0061] On the other hand, an embodiment of the present application provides a vehicle chassis, including the above-mentioned fuel cell system. A cab is provided on the vehicle chassis, and the mounting frame 100 of the fuel cell system is located behind the cab.

[0062] The height of the mounting frame 100 is consistent with the height of the cab, and the width of the mounting frame 100 is consistent with the width of the cab.

[0063] In the embodiment of the present application, the hydrogen storage system and the heat dissipation assembly are arranged above the load-bearing surface of the vehicle chassis, which not only removes the space limitation on the system power, but also enhances the heat dissipation performance and prevents the system from overheating.

[0064] The above description is merely a preferred embodiment of the present application and is not intended to limit the present application. Various modifications and variations are possible for those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present application shall be included within the scope of protection of the present application.

Claims

1. A fuel cell system, characterized in that: The invention comprises a fuel cell and a hydrogen storage assembly arranged on a vehicle chassis; the hydrogen storage assembly comprises a mounting frame (100) and a hydrogen storage tank (101) arranged in the mounting frame (100) and used for providing hydrogen to the fuel cell; the bottom of the mounting frame (100) is connected to a bearing surface formed on the vehicle chassis, and the hydrogen storage tank (101) is located above the bearing surface; a heat dissipation assembly is arranged on the top of the mounting frame (100), and the heat dissipation assembly is connected to the fuel cell via a liquid cooling pipe (102).

2. The fuel cell system according to claim 1, wherein: The heat dissipation assembly comprises a heat dissipation fan (103) arranged on a mounting frame (100), and a cooling water tank (104) connected to the liquid cooling pipe (102); the arrangement plane of the heat dissipation fan (103) is parallel to the arrangement plane of the cooling water tank (104), and the air outlet of the heat dissipation fan (103) is close to the cooling water tank (104).

3. The fuel cell system according to claim 2, wherein: The heat dissipation assembly further comprises a tray frame (105), and the cooling water tank (104) and the heat dissipation fan (103) are both mounted on the tray frame (105); the tray frame (105) is detachably connected to the mounting frame (100).

4. The fuel cell system according to claim 3, wherein: The tray frame (105) is horizontally arranged on the upper part of the installation frame (100), and the cooling water tank (104) is horizontally arranged in the tray frame (105); the cooling fan (103) is arranged on the upper surface of the cooling water tank (104).

5. The fuel cell system according to claim 4, characterized in that There are multiple cooling fans (103), which are arranged at intervals on the upper surface of the cooling water tank (104).

6. The fuel cell system according to claim 4, characterized in that The projection of the cooling water tank (104) on the vehicle chassis covers the projection of the hydrogen storage tank (101) on the vehicle chassis.

7. The fuel cell system according to any one of claims 3 to 6, characterized in that: The pallet frame (105) includes two parallel and spaced longitudinal beams (106), and a cross beam (107) arranged between the two longitudinal beams (106). There are multiple cross beams (107) that are spaced apart along the extending direction of the longitudinal beams (106).

8. The fuel cell system according to any one of claims 3 to 6, characterized in that: The pallet frame (105) is provided with a plurality of hanging rings (108) arranged at intervals.

9. A vehicle chassis, characterized in that: The fuel cell system comprises the fuel cell system according to any one of claims 1 to 8, wherein a cab is provided on the vehicle chassis, and the mounting frame (100) of the fuel cell system is located behind the cab.

10. The vehicle chassis according to claim 9, characterized in that The height of the mounting frame (100) is consistent with the height of the cab, and the width of the mounting frame (100) is consistent with the width of the cab.

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