Fuel cell case

Abstract

The utility model provides a fuel cell case. The fuel cell case comprises a fuel cell main body, a bracket cross beam, a case body upper frame and a case body lower frame, a front pressing plate and a rear pressing plate of the fuel cell main body are connected through a plurality of bracket cross beams; the box body upper frame comprises an upper pressing plate and a first side pressing plate which are integrally formed; the box body lower frame comprises a lower pressing plate and a second side pressing plate which are integrally formed; the first side pressing plate and the second side pressing plate are used for sealing two side surfaces of the fuel cell main body; and the upper pressing plate and the lower pressing plate are fixed on the bracket cross beam and are respectively used for sealing the top surface and the bottom surface of the fuel cell main body. According to the utility model, the rigidity of the fuel cell case is utilized, the four-side packaging of the fuel cell case is realized through the case upper frame and the case lower frame, and the traditional aluminum alloy case is replaced by the case upper frame and the case lower frame, so that the mounting process of the fuel cell case is simplified, and the mounting cost of the case is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of fuel cells, in particular to a fuel cell chassis. Background Art

[0002] The fuel cell chassis is an important component for fuel cell protection, providing dustproof, waterproof, anti-collision, insulation and safety protection for the fuel cells inside.

[0003] Most of the common fuel cell chassis on the market are aluminum alloy chassis. The preparation process is to cast or weld multiple panels of the chassis into a whole, and then install the fuel cell into the aluminum alloy chassis from the upper open surface. During installation, the position of the fuel cell needs to be adjusted to align the hydrogen, air and water inlets and outlets on the fuel cell with the hydrogen, air and water inlets and outlets on the chassis, and then the upper panel is locked to the chassis by screws, and the chassis is sealed by sealing strips between the panels and the chassis. The aluminum alloy chassis casting solution obtained by sealing according to the above solution has a long mold opening cycle and high cost, and the welding solution has high process requirements and costs, so it is not suitable for mass production of fuel cells. Utility Model Content

[0004] The utility model aims to provide a fuel cell chassis, which utilizes two bent plates to encapsulate the two side surfaces, the top surface and the bottom surface of the fuel cell body, thereby simplifying the chassis installation process and reducing the chassis installation cost.

[0005] The utility model provides a fuel cell chassis, comprising: a fuel cell body, a support beam, an upper chassis frame and a lower chassis frame;

[0006] The front pressure plate and the rear pressure plate of the fuel cell body are connected by a plurality of support beams;

[0007] The upper frame of the box body includes an upper pressing plate and a first side pressing plate formed in one piece; the lower frame of the box body includes a lower pressing plate and a second side pressing plate formed in one piece;

[0008] The first side pressure plate and the second side pressure plate are used to seal two side surfaces of the fuel cell body;

[0009] The upper pressing plate and the lower pressing plate are fixed on the support cross beam and are used to seal the top surface and the bottom surface of the fuel cell body respectively.

[0010] Furthermore, it also includes: a high-voltage connector and a connecting copper busbar;

[0011] The high-voltage connector is arranged in the rear pressure plate of the fuel cell body, and the connecting copper bar is arranged on one of the side surfaces of the fuel cell body;

[0012] The high-voltage connector is connected to the fuel cell in the fuel cell body through the connecting copper bar.

[0013] Furthermore, the upper pressing plate and the first side pressing plate, and the lower pressing plate and the second side pressing plate are vertically connected.

[0014] Furthermore, it also includes: a chassis sealing gasket; the chassis sealing gasket is arranged between the lower pressure plate and the bottom surface of the fuel cell body.

[0015] Furthermore, the bottom surface of the fuel cell body, the chassis sealing gasket and the lower pressure plate are connected by screws.

[0016] Furthermore, it also includes a waterproof membrane fixing block; the waterproof membrane fixing block is arranged in the first side pressure plate.

[0017] Furthermore, it also includes a waterproof and breathable membrane; the waterproof and breathable membrane is adhered to the surface of the waterproof membrane fixing block.

[0018] Furthermore, exhaust holes are provided in the upper frame of the box body and on the surface of the waterproof membrane fixing block.

[0019] Furthermore, it also includes a chassis purge air inlet connector, which is arranged in the front pressure plate of the fuel cell body.

[0020] Furthermore, the support cross beam is connected to the front pressure plate and the rear pressure plate through threads.

[0021] Compared with the prior art, the utility model has at least the following technical effects:

[0022] The utility model provides a fuel cell chassis, which includes an upper chassis frame and a lower chassis frame. The upper chassis frame is formed integrally by an upper pressure plate and a first side pressure plate, and the lower chassis frame is formed integrally by a lower pressure plate and a second side pressure plate. The upper pressure plate and the lower pressure plate are respectively fixed on a bracket crossbeam of a fuel cell body, and are respectively used to achieve sealing of the top surface and the bottom surface of the fuel cell body; the first side pressure plate and the second side pressure plate are respectively fixed to a front pressure plate and a rear pressure plate of the fuel cell body, and are respectively used to achieve sealing of the two side surfaces of the fuel cell body. The traditional aluminum alloy chassis is abandoned, and the rigidity of the fuel cell chassis itself is utilized. Through the upper chassis frame and the lower chassis frame, four-side packaging of the fuel cell chassis is achieved, the installation process of the fuel cell chassis is simplified, and the installation cost of the chassis is reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 is a structural schematic diagram of the fuel cell chassis;

[0024] Figure 2is another structural schematic diagram of the fuel cell chassis;

[0025] Figure 3 is a schematic diagram of the position of the chassis sealing gasket;

[0026] Figure 4 is a structural schematic diagram of the upper frame of the box body;

[0027] Figure 5 is a structural schematic diagram of the lower frame of the box body;

[0028] Figure 6 It is a structural schematic diagram of the fuel cell chassis when it is installed on the system mounting plate. DETAILED DESCRIPTION

[0029] The following is a description of a fuel cell chassis of the utility model in conjunction with a schematic diagram, which shows a preferred embodiment of the utility model. It should be understood that those skilled in the art can modify the utility model described herein and still achieve the beneficial effects of the utility model. Therefore, the following description should be understood as being widely known to those skilled in the art and not as a limitation to the utility model.

[0030] The present invention is described in more detail in the following paragraphs by way of example with reference to the accompanying drawings. The advantages and features of the present invention will become more apparent from the following description. It should be noted that the accompanying drawings are in very simplified form and in non-precise proportions, and are only used to conveniently and clearly assist in explaining the purpose of the embodiments of the present invention.

[0031] Please refer to Figure 1-Figure 6 This embodiment provides a fuel cell chassis, including: a fuel cell body 9, a support beam 4, an upper frame 1 and a lower frame 2.

[0032] Specifically, the front pressure plate 3 and the rear pressure plate 10 of the fuel cell body 9 are connected by multiple bracket beams 4; the upper frame 1 of the box body includes an upper pressure plate 11 and a first side pressure plate 12 integrated into one; the lower frame 2 of the box body includes a lower pressure plate 21 and a second side pressure plate 22 integrated into one; the first side pressure plate 12 and the second side pressure plate are used to seal the two side surfaces of the fuel cell body 9; the upper pressure plate 11 and the lower pressure plate are fixed on the bracket beam 4, and are respectively used to seal the top surface and the bottom surface of the fuel cell body 9.

[0033] In this embodiment, the upper pressing plate 11 and the first side pressing plate 12 are vertically connected, as well as the lower pressing plate 21 and the second side pressing plate 22. The upper pressing plate 11 and the first side pressing plate 12, and the lower pressing plate 21 and the second side pressing plate 22 are manufactured by a bending forming process to form an upper frame 1 and a lower frame 2 of the box body. Through the bending forming process, the bending angle and depth of the upper frame 1 and the lower frame 2 of the box body can be accurately controlled, and the above process can make the plates fit tightly to form a smooth seam. Therefore, compared with processes such as casting and welding, the upper frame 1 and the lower frame 2 of the box body manufactured by the bending forming process have better dimensional accuracy and sealing.

[0034] This embodiment encapsulates the four sides of the fuel cell chassis through the upper frame 1 and the lower frame 2, replacing the traditional aluminum alloy chassis, simplifying the installation process of the fuel cell chassis, reducing the installation cost of the chassis, and increasing the overall rigidity of the fuel cell chassis.

[0035] In a specific embodiment, a plurality of threaded holes are provided between the front pressure plate 3 and the rear pressure plate 10 of the fuel cell body 9, and a plurality of threaded holes may also be provided on the two side surfaces of the fuel cell body 9. The bracket cross beam 4 is fixed between the front and rear pressure plates of the fuel cell body 9 through these threaded holes, and the first side pressure plate 12 and the second side pressure plate 12 realize sealing of the two side surfaces of the fuel cell body 9 through the threaded holes.

[0036] In another specific embodiment, the support beam 4 is also provided with a plurality of threaded holes, and the upper pressure plate 11 and the lower pressure plate 21 can be connected to the support beam 4 through the threaded holes, thereby sealing the top and bottom surfaces of the fuel cell body 9 .

[0037] In another specific embodiment, the material of the upper pressing plate 11 and the lower pressing plate 21, and the material of the first side pressing plate 12 and the second side pressing plate 22 can be any one or any combination of aluminum alloy, stainless steel, composite materials, plastics and ceramics.

[0038] Furthermore, the fuel cell chassis also includes a high-voltage connector 6 and a connecting copper bus 7 .

[0039] Specifically, the high-voltage connector 6 is arranged in the rear pressure plate 10 of the fuel cell body 91, and the high-voltage connector 6 is used to realize the connection between the fuel cell and the external high-voltage electrical system. The connecting copper bus 7 is arranged in the front pressure plate 3 or the rear pressure plate 10, and is used to connect the high-voltage connector and the high-voltage electrical output terminal inside the fuel cell.

[0040] During the specific installation process, the high-voltage connector 6 is first installed on the rear pressure plate 10 of the fuel cell body 91, and then the high-voltage electrical output terminal on the fuel cell body 9 is connected to the high-voltage connector 6 through the connecting copper bus 7. The connecting copper bus 7 and the high-voltage components connected to it are all protected by external insulation sleeves, thereby achieving reliable connection between the fuel cell body 9 and external high-voltage electrical equipment.

[0041] For further information, please refer to Figure 3 The fuel cell chassis is also provided with a chassis sealing gasket 8. The chassis sealing gasket 8 is located at the joint gap between the lower pressing plate 21 in the lower frame 24 of the chassis and the fuel cell body 9.

[0042] In a specific embodiment, the chassis sealing gasket 8 is disposed between the lower pressure plate 21 and the bottom surface of the fuel cell body 9 .

[0043] In another specific embodiment, the material of the chassis sealing gasket 8 can be rubber, silicone, nylon, etc., or can be a metal material, which is not specifically limited here and can be selected according to the working environment and pressure requirements of the fuel cell.

[0044] In another specific embodiment, the chassis gasket 8 can be directly bonded to the lower plate 21 of the lower frame 24 of the box body by using a dispensing process. In addition, a wire screw sleeve is installed on the fuel cell body 91 as a fixing hole. The screw passes through the lower plate 21 and the chassis gasket 8 and is locked with the wire screw sleeve installed on the fuel cell body 9 to compress the gasket, thereby achieving the sealing of the chassis. It can be understood that the specific connection method of the lower plate 21, the chassis gasket 8 and the fuel cell body 9 is not limited to the above, as long as the seamless connection of the lower frame 24 of the box body, the chassis gasket 8 and the rear plate 10 of the fuel cell body 9 can be achieved to maintain the sealing of the chassis.

[0045] Furthermore, a waterproof membrane fixing block 13 is provided in the first side pressure plate 12, and a waterproof breathable membrane 14 is adhered to the waterproof membrane fixing block 13. The waterproof breathable membrane 14 can prevent moisture from entering the fuel cell body 9 from the outside, and allow gas to pass through to maintain the air permeability of the fuel cell chassis.

[0046] A possible specific installation method of the waterproof membrane fixing block 13 and the waterproof breathable membrane 14 is as follows: a blind hole is punched on the waterproof membrane fixing block 13 and a wire screw sleeve is installed. After the waterproof breathable membrane 14 is bonded to the waterproof membrane fixing block 13, the waterproof membrane fixing block 13 is locked into the first side pressure plate 12 by screws.

[0047] Furthermore, along the edge of the upper frame 1 of the box body, a plurality of exhaust holes of the same size are evenly distributed, and the distance between two adjacent exhaust holes is equal, so as to promote the smooth discharge of the airflow in the fuel cell box. In addition, the waterproof membrane fixing block 13 is also provided with an exhaust hole, and the size of the exhaust hole is the same as that of the exhaust hole opened on the upper frame 1 of the box body. The exhaust hole on the waterproof membrane fixing block 13 can also effectively release the airflow in the fuel cell box, thereby protecting the waterproof membrane from damage.

[0048] Furthermore, a purge air inlet connector 15 is provided on the front pressure plate 3 of the fuel cell body 9, and the purge air inlet connector 15 is used to purge the inside of the chassis. The purge air inlet connector 15 blows high-pressure air into the inside of the chassis through the pipeline to remove dust, impurities, etc. inside the chassis, thereby achieving cleaning inside the chassis.

[0049] In this embodiment, the four bottom corners of the fuel cell chassis are respectively provided with fixing devices 9. The fixing devices 9 are used to connect the fuel cell chassis to an external system.

[0050] In a specific embodiment, external system mounting holes are further provided on the first side pressure plate 12 and the second side pressure plate 22, and four fixing devices 16 fix the fuel cell chassis to the system bottom plate 10 through the four external system mounting holes. Those skilled in the art can install different fixing devices according to different external conditions according to actual conditions, so as to make the connection between the fuel cell chassis and the external system more stable.

[0051] In summary, this embodiment provides an upper frame of the box body formed by an upper pressure plate and a first side pressure plate, and a lower frame of the box body formed by a lower pressure plate and a second side pressure plate, so as to achieve the sealing of the two side surfaces, bottom surface and top surface of the fuel cell body, abandon the traditional aluminum alloy chassis, and utilize the rigidity of the fuel cell chassis itself, through the upper frame of the box body and the lower frame of the box body, to achieve the four-sided packaging of the fuel cell chassis, simplify the installation process of the fuel cell chassis, and reduce the installation cost of the chassis. In addition, the use of the first side pressure plate and the second side pressure plate can reduce the volume and weight of the chassis, and is more suitable for small batch production. The fuel cell chassis can also be connected to the external system through the external system mounting hole, thereby improving the installation stability.

[0052] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. A fuel cell chassis, characterized in that: include: Fuel cell body, support crossbeam, upper box frame and lower box frame; The front pressure plate and the rear pressure plate of the fuel cell body are connected by a plurality of support beams; The upper frame of the box body includes an upper pressing plate and a first side pressing plate; the lower frame of the box body includes a lower pressing plate and a second side pressing plate; The first side pressure plate and the second side pressure plate are used to seal two side surfaces of the fuel cell body; The upper pressing plate and the lower pressing plate are fixed on the support cross beam and are used to seal the top surface and the bottom surface of the fuel cell body respectively.

2. The fuel cell chassis according to claim 1, characterized in that: Also includes: High voltage connectors and connecting copper bars; The high-voltage connector is arranged in the rear pressure plate of the fuel cell body, and the connecting copper bar is arranged on one of the side surfaces of the fuel cell body; The high-voltage connector is connected to the fuel cell in the fuel cell body through the connecting copper bar.

3. The fuel cell chassis according to claim 1, characterized in that: The upper pressing plate and the first side pressing plate are vertically connected, as are the lower pressing plate and the second side pressing plate.

4. The fuel cell chassis according to claim 1, characterized in that: Also includes: Chassis sealing gasket; the chassis sealing gasket is arranged between the lower pressure plate and the bottom surface of the fuel cell body.

5. The fuel cell chassis according to claim 4, characterized in that: The bottom surface of the fuel cell body, the chassis sealing gasket and the lower pressing plate are connected by screws.

6. The fuel cell chassis according to claim 1, characterized in that: It also includes a waterproof membrane fixing block; the waterproof membrane fixing block is arranged in the first side pressure plate.

7. The fuel cell chassis according to claim 6, characterized in that: It also includes a waterproof and breathable membrane; the waterproof and breathable membrane is adhered to the surface of the waterproof membrane fixing block.

8. The fuel cell chassis according to claim 6, characterized in that: Exhaust holes are provided in the upper frame of the box body and on the surface of the waterproof membrane fixing block.

9. The fuel cell chassis according to claim 1, characterized in that: It also includes a chassis purge air inlet connector, which is arranged in the front pressure plate of the fuel cell body.

10. The fuel cell chassis according to claim 1, characterized in that: The support cross beam is connected to the front pressure plate and the rear pressure plate through threads.

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