CN217933864U

CN217933864U - Graphite bipolar plate for fuel cell

Info

Publication number: CN217933864U
Application number: CN202221986344.0U
Authority: CN
Inventors: 王世应
Original assignee: Dongguan Jiayu Carbon Products Co ltd
Current assignee: Dongguan Jiayu Carbon Products Co ltd
Priority date: 2022-07-29
Filing date: 2022-07-29
Publication date: 2022-11-29
Anticipated expiration: 2032-07-29

Abstract

The utility model discloses a graphite bipolar plate for fuel cell, belong to bipolar plate installation technical field, a graphite bipolar plate for fuel cell, including fuel cell and graphite bipolar plate, mounting groove and the spacing groove of mutual intercommunication are seted up to fuel cell's lower extreme, graphite bipolar plate has been placed in the mounting groove, the equal fixedly connected with otic placode in both ends about graphite bipolar plate, first spout has all been seted up to the one end of keeping away from graphite bipolar plate of a pair of otic placode, the second spout that is linked together with first spout is all seted up to the upper end of a pair of otic placode, sliding connection has the stopper in a pair of first spout, a pair of stopper and a pair of miniature spring of the equal fixedly connected with in bottom of first spout, can realize improving the work efficiency that the staff installed fuel cell and graphite bipolar plate equipment, and reduce intensity of labour, and time saving, when graphite bipolar plate breaks down in long-time use, it is also easier to change.

Description

Graphite bipolar plate for fuel cell

Technical Field

The utility model relates to a bipolar plate installs technical field, more specifically says, relates to a graphite bipolar plate for fuel cell.

Background

The fuel cell is a chemical device which directly converts chemical energy of fuel into electric energy, also called electrochemical generator, and is a fourth power generation technology following hydroelectric power generation, thermal power generation and atomic power generation, because the fuel cell converts the gibbs free energy part in the chemical energy of the fuel into electric energy through electrochemical reaction, and is not limited by carnot cycle effect, so the efficiency is high, in addition, the fuel cell uses fuel and oxygen as raw materials, and has no mechanical transmission component, so the discharged harmful gas is very little, the service life is long, therefore, the fuel cell is the most promising power generation technology from the viewpoint of saving energy and protecting ecological environment.

The graphite bipolar plate is a key component of the proton exchange membrane fuel cell, which not only affects the performance of the cell, but also occupies about 40% of the cost and 80% of the mass of the cell, so that the research on the key component has great promotion on the development and commercialization process of the fuel cell.

The existing graphite bipolar plate is fixed with a fuel cell through bolts and screws, so that the defects of low installation efficiency of workers, long installation time, time and labor waste and the like are caused.

SUMMERY OF THE UTILITY MODEL

1. Technical problem to be solved

To the problem that exists among the prior art, the utility model aims to provide a graphite bipolar plate for fuel cell, it can realize improving the work efficiency that the staff installed fuel cell and graphite bipolar plate equipment, reduces intensity of labour, and labour saving and time saving when graphite bipolar plate breaks down in long-time use, changes also easier.

2. Technical scheme

In order to solve the above problems, the utility model adopts the following technical proposal.

The utility model provides a graphite bipolar plate for fuel cell, includes fuel cell and graphite bipolar plate, mounting groove and spacing groove that mutual intercommunication is seted up to fuel cell's lower extreme, graphite bipolar plate has been placed in the mounting groove, the equal fixedly connected with otic placode in both ends about graphite bipolar plate, it is a pair of first spout has all been seted up to the one end of keeping away from graphite bipolar plate of otic placode, and is a pair of the second spout that is linked together with first spout is all seted up to the upper end of otic placode, and is a pair of sliding connection has the stopper in the first spout, and is a pair of miniature spring of stopper and the equal fixedly connected with in bottom of first spout, and the stopper keep away from the one end of miniature spring and the interior bottom end butt of spacing groove, can realize improving the work efficiency that the staff installed fuel cell and graphite bipolar plate equipment, reduce intensity of labour, labour saving and time saving, when graphite bipolar plate breaks down in long-time use, it is also easier to change.

Furthermore, the inner bottom ends of the pair of limiting grooves are fixedly connected with a first miniature magnetic block, the inner ends of the pair of limiting blocks are embedded with a second miniature magnetic block, the magnetic poles of the first miniature magnetic block and the second miniature magnetic block which are close to each other are opposite, when the graphite bipolar plate is installed in a fuel cell, the graphite bipolar plate and the fuel cell can not be separated when being subjected to non-manual acting force through magnetic attraction between the first miniature magnetic block and the second miniature magnetic block, and the stability of the graphite bipolar plate and the fuel cell after installation can be effectively improved.

Furthermore, the surface integrated into one piece of stopper has the regulation part, be carved with anti-skidding line on the regulation part, the shape and the first spout phase-match of stopper, the width sum of stopper and regulation part slightly is less than the groove depth of second spout, makes the stopper be located inside fuel cell all the time, does not influence its use, breaks down or takes place to damage after graphite bipolar plate uses for a long time, when needing to change it, through stirring a pair of regulation part to the one end that is close to each other, can make stopper and spacing groove separate and make it return to in the first spout completely, can lift graphite bipolar plate off and overhaul or change.

Furthermore, the miniature springs are compression springs, the miniature springs are symmetrically distributed in the first sliding grooves, and acting force for pushing the miniature springs to abut against the limiting grooves is applied to the limiting blocks through the miniature springs which are symmetrically distributed, so that the stability of the graphite bipolar plate and the fuel cell after installation is improved.

3. Advantageous effects

Compared with the prior art, the utility model has the advantages of:

(1) This scheme can realize improving the work efficiency that the staff installed fuel cell and graphite bipolar plate equipment, reduces intensity of labour, and labour saving and time saving when graphite bipolar plate breaks down in long-time use, changes also more easily.

(2) The utility model discloses a graphite bipolar plate, including a pair of spacing groove, the interior bottom of a pair of spacing groove all fixedly connected with miniature magnetic block one, the inner of a pair of spacing block all inlays and is equipped with miniature magnetic block two, and the one end magnetic pole that miniature magnetic block one and miniature magnetic block two are close to each other is opposite, when graphite bipolar plate installs in the fuel cell, through the magnetic attraction between miniature magnetic block one and the miniature magnetic block two, can not separate when enabling graphite bipolar plate and fuel cell receive the effort outside the non-manpower, can effectively improve graphite bipolar plate and fuel cell installation back stability.

(3) The surperficial integrated into one piece of stopper has the regulation part, be carved with anti-skidding line in the regulation part, the shape and the first spout phase-match of stopper, the width sum of stopper and regulation part slightly is less than the groove depth of second spout, make the stopper lie in inside the fuel cell all the time, do not influence its use, break down or take place to damage after graphite bipolar plate uses for a long time, when needing to change it, stir to the one end that is close to each other through a pair of regulation part, can make stopper and spacing groove separation and make it return to in the first spout completely, can lift graphite bipolar plate off to overhaul or change.

(4) Miniature spring is compression spring, and a pair of miniature spring symmetric distribution in first spout, and the miniature spring through a pair of symmetric distribution exerts the effort that promotes its and spacing groove butt to the stopper to improve graphite bipolar plate and fuel cell installation back stability.

Drawings

Fig. 1 is a front sectional view of the present invention;

FIG. 2 is a schematic structural view of a graphite bipolar plate, an ear plate and a stopper portion;

FIG. 3 is a schematic structural view of a limiting block in a normal state;

FIG. 4 is another state diagram of FIG. 3;

FIG. 5 is an enlarged view of FIG. 3 at A;

fig. 6 is an enlarged view of fig. 4 at B.

The numbering in the figures illustrates:

1 fuel cell, 11 mounting grooves, 12 limiting grooves, 13 micro magnetic blocks I, 2 graphite bipolar plates, 3 lug plates, 31 first sliding grooves, 32 second sliding grooves, 4 limiting blocks, 41 micro magnetic blocks II, 42 adjusting parts and 5 micro springs.

Detailed Description

The technical solution in the embodiment of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiment of the present invention; obviously, the described embodiments are only a part of the embodiments of the present invention, and not all embodiments, and all other embodiments obtained by those skilled in the art without making creative efforts based on the embodiments of the present invention belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "top/bottom", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted", "provided", "sleeved/connected", "connected", and the like are to be understood in a broad sense, such as "connected", which may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Example 1:

referring to fig. 1-6, a graphite bipolar plate for a fuel cell includes a fuel cell 1 and a graphite bipolar plate 2, a mounting groove 11 and a limiting groove 12 are formed at a lower end of the fuel cell 1, the graphite bipolar plate 2 is disposed in the mounting groove 11, two left and right ends of the graphite bipolar plate 2 are fixedly connected with ear plates 3, a first chute 31 is formed at one end of each pair of ear plates 3 away from the graphite bipolar plate 2, a second chute 32 communicated with the first chute 31 is formed at an upper end of each pair of ear plates 3, a limiting block 4 is slidably connected in each pair of first chutes 31, a pair of micro springs 5 is fixedly connected to inner bottom ends of the pair of limiting blocks 4 and the first chute 31, and one end of each limiting block 4 away from the micro spring 5 is abutted to an inner bottom end of the limiting groove 12.

Referring to fig. 1, the inner bottom ends of the pair of limiting grooves 12 are fixedly connected with the first micro magnetic blocks 13, the inner ends of the pair of limiting blocks 4 are embedded with the second micro magnetic blocks 41, and the magnetic poles of the adjacent ends of the first micro magnetic blocks 13 and the second micro magnetic blocks 41 are opposite, so that when the graphite bipolar plate 2 is installed in the fuel cell 1, the graphite bipolar plate 2 and the fuel cell 1 cannot be separated from each other under the action of non-manual force due to the magnetic attraction between the first micro magnetic blocks 13 and the second micro magnetic blocks 41, and the stability of the graphite bipolar plate 2 and the fuel cell 1 after installation can be effectively improved.

Referring to fig. 5-6, an adjusting portion 42 is integrally formed on the surface of the limiting block 4, anti-slip lines are carved on the adjusting portion 42, the shape of the limiting block 4 is matched with the first sliding slot 31, the sum of the widths of the limiting block 4 and the adjusting portion 42 is slightly smaller than the depth of the second sliding slot 32, so that the limiting block 4 is always located inside the fuel cell 1 without affecting the use thereof, when the graphite bipolar plate 2 breaks down or is damaged after long-term use and needs to be replaced, the limiting block 4 and the limiting slot 12 can be separated and completely return to the first sliding slot 31 by shifting the pair of adjusting portions 42 to the ends close to each other, and the graphite bipolar plate 2 can be dismounted for inspection or replacement.

Referring to fig. 2 and 5, the micro springs 5 are compression springs, the pair of micro springs 5 are symmetrically distributed in the first sliding groove 31, the pair of symmetrically distributed micro springs 5 apply an acting force to the stopper 4 to push the stopper 4 to abut against the stopper groove 12, so that the stability of the graphite bipolar plate 2 and the fuel cell 1 after installation is improved, and the sum of the magnetic attraction force between the first micro magnetic block 13 and the second micro magnetic block 41 and the elastic force of the micro springs 5 is smaller than the force applied by the finger toggle adjusting part 42 of an adult.

When a worker installs the graphite bipolar plate and the fuel cell, firstly, the pair of adjusting parts 42 are shifted towards the ends close to each other, so that the limiting block 4 completely returns to the first sliding groove 31 from the outside of the ear plate 3, then the graphite bipolar plate 2 is placed into the mounting groove 11 and released, at the moment, the limiting block 4 is reset due to the elasticity of the micro spring 5 and moves towards the limiting groove 12, and the first micro magnetic block 13 and the second micro magnetic block 41 also enable the limiting block 4 not to be easily separated from the limiting groove 12 through magnetic attraction force; when the graphite bipolar plate 2 is broken down or damaged after being used for a long time and needs to be replaced, the limiting block 4 and the limiting groove 12 can be separated and completely returned to the first sliding groove 31 by shifting the pair of adjusting parts 42 to one end close to each other, the graphite bipolar plate 2 can be dismounted for overhaul or replacement, the working efficiency of mounting a fuel cell and assembling the graphite bipolar plate by workers can be improved, the labor intensity is reduced, time and labor are saved, and when the graphite bipolar plate breaks down in the long-time use process, the replacement is easier.

The above description is only the preferred embodiment of the present invention; the scope of the present invention is not limited thereto. Any person skilled in the art should also be able to cover the technical scope of the present invention by replacing or changing the technical solution and the improvement concept of the present invention with equivalents and modifications within the technical scope of the present invention.

Claims

1. A graphite bipolar plate for a fuel cell, comprising a fuel cell (1) and a graphite bipolar plate (2), characterized in that: the fuel cell is characterized in that a mounting groove (11) and a limiting groove (12) which are mutually communicated are formed in the lower end of the fuel cell (1), a graphite bipolar plate (2) is placed in the mounting groove (11), the left end and the right end of the graphite bipolar plate (2) are fixedly connected with lug plates (3) and are a pair of, a first sliding groove (31) is formed in one end, away from the graphite bipolar plate (2), of the lug plate (3), a second sliding groove (32) communicated with the first sliding groove (31) is formed in the upper end of the lug plate (3), a limiting block (4) is connected in the first sliding groove (31) in a sliding mode, the limiting block (4) is a pair of micro springs (5) fixedly connected with the inner bottom end of the first sliding groove (31), and the end, away from the micro springs (5), of the limiting block (4) is abutted to the inner bottom end of the limiting groove (12).

2. A graphite bipolar plate for a fuel cell as claimed in claim 1, wherein: the inner bottom ends of the limit grooves (12) are fixedly connected with first miniature magnetic blocks (13), the inner ends of the limit blocks (4) are embedded with second miniature magnetic blocks (41), and magnetic poles at one ends, close to each other, of the first miniature magnetic blocks (13) and the second miniature magnetic blocks (41) are opposite.

3. A graphite bipolar plate for a fuel cell as claimed in claim 1, wherein: the surface of the limiting block (4) is integrally formed with an adjusting portion (42), and anti-skid lines are carved on the adjusting portion (42).

4. A graphite bipolar plate for a fuel cell as claimed in claim 1, wherein: the shape of the limiting block (4) is matched with the first sliding groove (31), and the sum of the widths of the limiting block (4) and the adjusting part (42) is slightly smaller than the depth of the second sliding groove (32).

5. A graphite bipolar plate for a fuel cell as claimed in claim 1, wherein: the miniature springs (5) are compression springs, and the miniature springs (5) are symmetrically distributed in the first sliding groove (31).