CN111653814A - A Novel Extruded Fuel Cell System Mounting Bracket - Google Patents

Abstract

The invention discloses a novel extruded fuel cell system mounting bracket, comprising: a plurality of vertical plates; the vertical plates are obtained by extrusion molding, and the plurality of vertical plates are used to enclose a frame structure and are adjacent to each other. There is a matching fixed assembly structure between the two vertical plates. This scheme replaces the original steel pipe tailor-welded structure with extruded baffle pieces connected by friction stir welding, which reduces the number of parts, makes the structure more concise, reduces the number of welds, and improves the structural strength.

Description

A Novel Extruded Fuel Cell System Mounting Bracket

technical field

The invention relates to the technical field of fuel cells, in particular to a novel extruded fuel cell system mounting bracket.

Background technique

The fuel cell system mounting bracket is the bridge between the fuel cell system and the vehicle. The fuel cell system mounting bracket is the mounting carrier of the fuel cell system, and the fuel cell and its box, air pipeline, cooling water pipeline, hydrogen pipeline, etc. are all fixed on it. Then the entire fuel cell system and the mounting bracket are integrally mounted on the vehicle.

Most of the traditional fuel cell box system mounting brackets are made of steel pipes through multiple tailoring. In this case, there are many steel pipe components, the production process is more complicated, and there are many welds, which have a certain impact on the strength; due to the use of steel pipes, the density Larger, the weight of the entire bracket is heavy, reaching more than 10kg; and the steel pipe tailor-welded bracket only forms a frame, which cannot form a shield for the internal structure of the fuel cell system, and has poor aesthetics.

SUMMARY OF THE INVENTION

In view of this, the present invention provides a novel extruded fuel cell system mounting bracket, which can shield the internal structure of the fuel cell system and effectively ensure the aesthetics of the fuel cell system.

To achieve the above object, the present invention provides the following technical solutions:

A novel extruded fuel cell system mounting bracket, comprising: a plurality of vertical plates; the vertical plates are obtained by extrusion molding, a plurality of the vertical plates encloses a frame structure, and two adjacent vertical plates There is a matching fixed assembly structure between them.

Preferably, the number of the vertical plates is four, and they are respectively a left baffle, a right baffle, a front baffle and a rear baffle;

The left baffle, the rear baffle, the right baffle and the front baffle can be vertically connected end to end in sequence to enclose the frame structure.

Preferably, the structures of the left baffle, the right baffle, the front baffle and the rear baffle are all the same.

Preferably, the fixed assembly structure includes: a friction stir welding structure or an adhesive structure.

Preferably, there is a matching inner fixed and assembled structure between the inner sides of two adjacent vertical plates; the inner fixed and assembled structure includes: an argon arc welding structure or an adhesive structure.

Preferably, the frame structure has a machined structure;

The machined structure includes:

a top threaded sleeve mounting hole arranged at least on the tops of the two opposite vertical plates for cooperating with the fuel cell box;

And/or, a bottom threaded sleeve mounting hole provided at least at the bottom of two opposite said vertical plates for matching with the loading vehicle.

Preferably, the machined structure further comprises:

A snap mounting hole and/or a rivet nut mounting hole arranged on the inner sidewall of each of the vertical plates for matching with the fuel cell system components.

Preferably, the machined structure further comprises:

an air intake pipe through hole arranged through the vertical plate and used for matching with the air intake pipe;

The air outlet pipe through hole is arranged through the vertical plate and used for matching with the air outlet pipe;

A cooling water inlet pipe through hole arranged through the other said vertical plate and used for matching with the cooling water inlet pipe;

And/or, a cooling water outlet pipe through hole provided through the other said vertical plate for matching with the cooling water outlet pipe.

Preferably, the machined structure further comprises:

A weight-reducing hole is provided on the inner side wall of each of the vertical plates.

Preferably, the material of the vertical plate is low-density metal; the low-density metal includes: aluminum alloy or magnesium alloy.

It can be seen from the above technical solutions that the novel extruded fuel cell system mounting bracket provided by the present invention has the following beneficial effects:

This scheme replaces the original multiple steel pipe tailor-welded structures with the assembly and connection structure of multiple extruded vertical plates, which reduces the number of parts, makes the structure more concise, and also reduces the number of connection structures, which is helpful for The structural strength of the mounting bracket is improved.

Description of drawings

In order to explain the embodiments of the present invention or the technical solutions in the prior art more clearly, the following briefly introduces the accompanying drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only These are some embodiments of the present invention. For those of ordinary skill in the art, other drawings can also be obtained according to these drawings without creative efforts.

FIG. 1 is a schematic structural diagram of a novel extruded fuel cell system mounting bracket provided in an embodiment of the present invention;

FIG. 2 is an exploded view of a novel extruded fuel cell system mounting bracket provided by an embodiment of the present invention;

3 is a schematic structural diagram of a left baffle provided by an embodiment of the present invention;

4 is a schematic structural diagram of a right baffle provided by an embodiment of the present invention;

5 is a schematic structural diagram of a front baffle provided by an embodiment of the present invention;

FIG. 6 is a schematic structural diagram of a rear baffle provided by an embodiment of the present invention.

Among them, 1 is the left baffle, 1.1 is the installation hole of the threaded sleeve on the top of the left baffle, 1.2 is the left baffle rivet nut installation hole, 1.3 is the left baffle snap installation hole, 1.4 is the left baffle weight reduction hole, 1.5 is the passage hole for the air intake pipe, 1.6 is the passage hole for the air outlet pipe; 2 is the right baffle, 2.1 is the installation hole of the threaded sleeve on the top of the right baffle, 2.2 is the cooling water inlet pipe passage hole, and 2.3 is the cooling water 3 is the front baffle; 4 is the rear baffle, 4.1 is the rear baffle snap installation hole, 4.2 is the rear baffle weight reduction hole; 5 is the threaded sleeve on the top of the left baffle; 6 is the left baffle Baffle rivet nut; 7 is friction stir welding seam; 8 is argon arc welding seam.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

The novel extruded fuel cell system mounting bracket provided by the embodiment of the present invention includes: a plurality of vertical plates; the vertical plates are obtained by extrusion molding, and the plurality of vertical plates encloses a frame structure, and the vertical plates are formed between two adjacent vertical plates. Has a mating fixed assembly structure. It should be noted that the vertical plate in this solution is formed by extrusion process, which helps to reduce the production cost of the vertical plate.

It can be seen from the above technical solutions that the novel extruded fuel cell system mounting bracket provided by the embodiment of the present invention has the following beneficial effects:

This scheme replaces the original multiple steel pipe tailor-welded structures with the assembly and connection structure of multiple extruded vertical plates, which reduces the number of parts, makes the structure more concise, and also reduces the number of connection structures, which is helpful for The structural strength of the mounting bracket is improved.

Specifically, the number of vertical plates is four, and they are respectively a left baffle 1, a right baffle 2, a front baffle 3 and a rear baffle 4, the structure of which can be shown in FIGS. 3 to 6;

As shown in FIG. 1 , the left baffle 1 , the rear baffle 4 , the right baffle 2 and the front baffle 3 can be vertically connected end to end in sequence to form a frame structure. This solution is designed in this way, the number of parts of the mounting bracket is reduced, the structure of the mounting bracket is more concise, and the welding seam is also reduced, thereby helping to improve the structural strength.

In this solution, as shown in FIG. 2 , the structures of the left baffle 1 , the right baffle 2 , the front baffle 3 and the rear baffle 4 are all the same. In this way, the structure of the mounting bracket is more concise, and it is convenient to use the same extrusion die to produce the four baffles, which greatly reduces the development cost of the extrusion die, thereby further reducing the cost of The production cost of the mounting bracket.

Specifically, in order to obtain a better fixed assembly effect between two adjacent vertical plates, preferably, the fixed assembly structure includes: a friction stir welding structure. That is, the four baffle parts are connected together end to end by friction stir welding (the distribution position of the friction stir welding seam 7 is shown in Figure 1), thus effectively ensuring the sealing and connection of two adjacent baffle parts after connection. strength. In this solution, four baffle parts are assembled into a frame-type mounting bracket by friction stir welding, which reduces the number of welding seams and further enhances the connection strength of the mounting bracket. Of course, the fixed assembly structure in this solution may also adopt other connection structures, such as an adhesive structure, especially a high-strength adhesive structure, which will not be described here.

In order to further optimize the above technical solution, there is a matching inner fixed assembly structure between the inner sides of two adjacent vertical plates; further, the inner fixed assembly structure includes: a argon arc welding structure. That is, argon arc welding repair welding is used locally on the inner side of the two adjacent baffle parts (the distribution position of the argon arc welding seam 8 is shown in Fig. 1), so as to further enhance the connection strength of the mounting bracket. Of course, other reinforcement structures can also be used in this solution, such as an adhesive structure, especially a high-strength adhesive structure, which will not be repeated here.

In this scheme, the four baffle parts are produced by extrusion process, and then they are welded by friction stir welding to form the prototype of the mounting bracket, and then the appearance features are further processed by machining, so as to form the final Finished mounting bracket. Among them, the appearance features include: threaded sleeve installation holes, rivet nut installation holes, snap installation holes, air or cooling water inlet and outlet pipeline through holes, and weight reduction holes.

Accordingly, the frame structure has a machined structure;

Further, the machined structure includes:

It is arranged at least on the tops of two opposite vertical plates, and is used for the top threaded sleeve mounting holes matched with the fuel cell box; in this solution, as shown in Figure 3, the top of the left baffle 1 is provided with the top of the left baffle Threaded sleeve installation hole 1.1; as shown in Figure 4, the top of the right baffle 2 is provided with a threaded sleeve installation hole 2.1 on the top of the right baffle; in addition, in order to better understand the connection principle between the fuel cell box and the top of the mounting bracket, Now take the installation hole 1.1 of the threaded sleeve at the top of the left baffle as an example for illustration. Among them, as shown in Figure 2, the installation hole 1.1 of the threaded sleeve on the top of the left baffle is used to install the threaded sleeve 5 on the top of the left baffle, and then the bolts are matched with the threaded sleeve 5 on the top of the left baffle to realize The connection between the fuel cell box and the top of the left baffle 1;

And/or, at least the bottom threaded sleeve mounting holes provided at the bottoms of the two opposite vertical plates for matching with the loading vehicle. Wherein, the connection principle between the loading vehicle and the bottom of the mounting bracket is the same as that described above, and will not be repeated here.

Further, the machining structure also includes:

A snap-fit mounting hole and/or a rivet nut mounting hole provided on the inner sidewall of each vertical plate for matching with the fuel cell system components. Similarly, in this solution, the snap mounting holes are used to install the snaps, and the rivet nut mounting holes are used to install the rivet nuts (as shown in Figures 2 and 3, the inner side wall of the left baffle 1 is provided with a left baffle The rivet nut installation hole 1.2, the left baffle rivet nut installation hole 1.2 is used to install the left baffle rivet nut 6), and then based on the snap and/or rivet nut, to realize the installation of various components of the fuel cell system and piping installation. Certainly, the installation positions of the snap mounting holes and/or the rivet nut mounting holes correspond to the distribution positions of various components and pipelines of the fuel cell system.

Further, the machining structure also includes:

It is arranged through the vertical plate and is used to pass through holes for the air intake pipelines to be matched with the air intake pipelines; as shown in Figure 3, the left baffle 1 runs through and has an air intake pipeline through holes 1.5;

It is arranged through the vertical plate and is used for the air outlet pipe through hole to be matched with the air outlet pipe; as shown in Figure 3, the left baffle 1 is provided with an air outlet pipe through hole 1.6 through it;

It is arranged through another vertical plate and is used for a cooling water inlet pipe through hole that cooperates with the cooling water inlet pipe; as shown in Figure 4, the right baffle 2 is provided with a cooling water inlet pipe through hole 2.2;

And/or a cooling water outlet pipe through hole provided through the other vertical plate for matching with the cooling water outlet pipe. As shown in Figure 4, the right baffle 2 is provided with a cooling water outlet pipeline through hole 2.3; this scheme is designed in this way to ensure the smooth laying of the air pipeline and the cooling water pipeline. In this solution, except for the above four through holes, the rest of the mounting bracket shields the internal fuel cell system components, thereby effectively ensuring the aesthetics of the fuel cell system.

Further, the machining structure also includes:

A weight-reducing hole is provided on the inner side wall of each vertical plate. That is, each baffle part is provided with a weight reduction hole on the inner wall; as shown in Figure 3, the left baffle 1 has a left baffle weight reduction hole 1.4 on the inner wall; as shown in Figure 6, the inner side of the rear baffle 4 The wall is provided with a rear baffle weight-reducing hole 4.2; this scheme is designed in this way, so as to realize the lightweight design of the mounting bracket.

In this solution, the material of the vertical plate is low-density metal, similarly, in order to realize the lightweight design of the mounting bracket; in order to achieve a better lightweight effect, as a preferred low-density metal, aluminum alloy or magnesium alloy is selected.

Below in conjunction with specific embodiment, this scheme is further introduced:

The present invention is a novel extrusion fuel cell system mounting bracket, which is mainly composed of a left baffle 1 , a right baffle 2 , a front baffle 3 and a rear baffle 4 . The left baffle 1, the right baffle 2, the front baffle 3 and the rear baffle 4 are connected as a whole by friction stir welding. The friction stir welding can effectively ensure the sealing and strength after the connection, and the inner part is repaired by argon arc welding. , to increase the connection strength. The left baffle 1, right baffle 2, front baffle 3 and rear baffle 4 are all made of low-density alloy materials (such as aluminum alloy or magnesium alloy) using the same mold to produce by extrusion process, and then processed by machining. The required mounting holes, weight reduction holes and other features. Two threaded sleeves are installed on the upper ends (threaded sleeve mounting holes) of the left baffle 1 and the right baffle 2, which are used for the installation of the fuel cell box, and two threaded sleeves are also installed at the lower ends, which are used for the fuel cell system. The mounting bracket is connected to the fixed place of the vehicle. The four baffles are equipped with snap mounting holes and rivet nut mounting holes as required, which are used for the installation and fixation of various components and pipelines of the fuel cell system. The left baffle 1 has two through holes for the air intake pipeline and the air outlet pipeline, and the right baffle 2 has two through holes for the cooling water inlet pipeline and the water outlet pipeline.

Compared with the original steel pipe tailor-welded structure, the present invention has a simple structure, and the four baffle parts are only connected by friction stir welding at the joints, the welds are reduced, and the strength is improved; when the present invention adopts the aluminum alloy material, the weight can be reduced by 30%. Above, the 4 parts baffles can be produced by the same mold, which can ensure that the cost increase does not exceed 10%; in the present invention, except for opening holes at several external interfaces, the rest of the internal fuel cell system components are shielded, ensuring that the fuel cell The aesthetics of the system.

Technical scheme of the present invention:

In the present invention, the left baffle 1, the right baffle 2, the front baffle 3, and the rear baffle 4 are first produced by an extrusion process to reach the state before machining, and then the excess material is removed by machining, and the notch and the threaded sleeve are processed. Features such as mounting holes, rivet nut mounting holes, snap mounting holes, air or cooling water inlet and outlet pipeline holes, and weight reduction holes are shown in Figure 3, Figure 4, Figure 5, and Figure 6. The threaded sleeve and the rivet nut are installed on the left baffle 1, right baffle 2, front baffle 3, and rear baffle 4 as required, and the last four baffle members are connected together by friction stir welding, and a small amount of argon is added inside. Arc welding increases the connection strength to form the fuel cell box system mounting bracket, as shown in Figure 1.

Advantages of the present invention:

The present invention has a simple structure, and four baffle parts can be produced by the same extrusion die, thereby greatly reducing the cost of the die and further reducing the production cost;

The four baffle parts are only connected by friction stir welding at the joints, the welding seam is reduced, and the strength is improved; and reinforcing ribs can be added inside to further improve the strength;

When the aluminum alloy material is used in the present invention, the total weight of the baffle plate of the four parts is only about 6.9kg, which can achieve a weight reduction of 30% compared with the steel pipe structure;

In the present invention, except for the opening holes, the other parts are shielded from the internal fuel cell system components, so as to ensure the aesthetics of the fuel cell system.

Key points of the present invention:

1. Replace the original steel pipe tailor-welded structure with extruded baffle pieces connected by friction stir welding, reducing the number of parts, making the structure more concise, reducing the number of welds, and improving the structural strength;

2. The 4 baffle parts are made of low-density metal materials, which increases the lightweight level of the entire fuel cell system support by 30% or more;

3. The four baffle parts only have weight reduction holes and installation holes on the inner side except for the pipeline through holes, which can basically block the internal fuel cell system structure and have good external appearance.

The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments, and the same and similar parts between the various embodiments can be referred to each other.

The above description of the disclosed embodiments enables any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (10)

1. A novel extruded fuel cell system mounting bracket, comprising: a plurality of vertical plates; the vertical plates are obtained by extrusion forming, a plurality of vertical plates surround to form a frame structure, and a matched fixed assembly structure is arranged between every two adjacent vertical plates.

2. The novel extruded fuel cell system mounting bracket of claim 1 wherein the number of risers is four and is a left baffle (1), a right baffle (2), a front baffle (3), and a back baffle (4);

the left baffle (1), the rear baffle (4), the right baffle (2) and the front baffle (3) can be sequentially vertically connected end to form the frame structure.

3. The new extruded fuel cell system mounting bracket of claim 2 wherein the left baffle (1), the right baffle (2), the front baffle (3) and the back baffle (4) are all identical in structure.

4. The novel extruded fuel cell system mounting bracket of claim 1, wherein said fixed mounting structure comprises: friction stir welded structures or glued structures.

5. The novel extruded fuel cell system mounting bracket of claim 1, wherein a mating inner side fixing assembly structure is provided between the inner sides of two adjacent vertical plates; the inside fixing and assembling structure includes: argon arc welding structure or adhesive structure.

6. The novel extruded fuel cell system mounting bracket of claim 1, wherein said frame structure has a machined structure;

the machining structure includes:

the top threaded sleeve mounting holes are at least formed in the tops of the two opposite vertical plates and used for being matched with the fuel cell box body;

and/or at least two bottom threaded sleeve mounting holes which are arranged at the bottoms of the two opposite vertical plates and are used for matching with a loading vehicle.

7. The new extruded fuel cell system mounting bracket of claim 6, wherein the machined structure further comprises:

and the clamping buckle mounting holes and/or the rivet nut mounting holes are arranged on the inner side wall of each vertical plate and are used for being matched with the fuel cell system components.

8. The new extruded fuel cell system mounting bracket of claim 6, wherein the machined structure further comprises:

the air inlet pipeline passes through the holes which are arranged on the vertical plate and are used for matching with the air inlet pipeline;

the air outlet pipeline passing hole penetrates through the vertical plate and is used for being matched with the air outlet pipeline;

the cooling water inlet pipeline passes through the hole which is arranged on the other vertical plate and is used for being matched with the cooling water inlet pipeline;

and/or the cooling water outlet pipeline penetrates through the other vertical plate and is used for being matched with the cooling water outlet pipeline through a hole.

9. The new extruded fuel cell system mounting bracket of claim 6, wherein the machined structure further comprises:

and the lightening holes are arranged on the inner side wall of each vertical plate.

10. The novel extruded fuel cell system mounting bracket of claim 1, wherein the riser is made of a low density metal; the low-density metal includes: an aluminum alloy or a magnesium alloy.

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