CN201160095Y

CN201160095Y - Package assembly of fuel cell

Info

Publication number: CN201160095Y
Application number: CNU2008200031692U
Authority: CN
Inventors: 方春生
Original assignee: DYNAPACK INTERNAT TECHNOLOGY C
Current assignee: DYNAPACK INTERNAT TECHNOLOGY C; Dynapack International Tech Corp
Priority date: 2008-01-28
Filing date: 2008-02-18
Publication date: 2008-12-03
Anticipated expiration: 2018-02-18
Also published as: TWM340567U

Abstract

The utility model relates to an assembly structure of a fuel cell. The assembly structure comprises a lower cover body, an upper cover body and a battery element group, wherein, a containing space is arranged inside the lower cover body, an opening is arranged on the top surface of the lower cover body and is communicated with the containing space, and an external thread part is arranged on the outer surface of the lower cover body; the upper cover body is provided with a top wall, a ring wall is extended downwards from the outer surface of the top wall, and an internal thread part is arranged on the outer surface of the top wall, and is thread-connected with the outer face of the lower cover body; and the battery element group is crimped between the bottom surface of the top wall of the upper cover body and the top surface of the lower cover body; thereby, as long as the user revolves the lower cover body, the battery element group can be pressed together, and the upper cover body is moved down integrally and horizontally, therefore evener contact pressure can be provided to the battery element group.

Description

The package assembly of fuel cell

Technical field

The utility model relates to a kind of fuel cell, refers to a kind of package assembly with fuel cell of helicitic texture especially.

Background technology

The price of oil raise gradually in recent years, scientist desires most ardently the scheme that solves of seeking, and fuel cell is for being considered to can replace one of alternative energy source of oil at present, it has the efficient height, reaction is fast, running is quiet and low-down exhaust emission, and can improve cell voltage or increase the electrode reaction area through series connection and improve advantages such as the magnitude of current.

The assembling mode of existing fuel cell is that storehouse together with each cell device (for example mea, conductor plate), in outermost a plurality of bolts and nut are set then cell device locking is fit together, for example (date of declaration: October 23 1984 Christian era) a kind of fuel-cell device that is disclosed promptly belongs to this kind assemble method to U.S. Patent Publication No. US4478917.

Yet this kind assembling mode is in when assembling, and every group of bolt and nut all must be locked respectively, need the more built-up time of cost.And when clamping screw and nut, be difficult to allow every group of bolt and nut that same coupling mechanism force is all arranged, cause the contact pressure between cell device inhomogeneous.From the research document, know that uneven contact pressure can allow the contact resistance (contactresistance) between cell device uprise, and then makes electrical conductivity efficient step-down, influences the energy conversion efficiency of fuel cell.

Therefore so the part improved of the above-mentioned defective of the utility model designer thoughts proposes a kind of reasonable in design and effectively improve the utility model design of above-mentioned defective.

The utility model content

Main purpose of the present utility model be to provide a kind of package assembly of fuel cell, the package assembly of this fuel cell that contact pressure uniformly can be provided between the cell device, and assemble method is easy.

For achieving the above object, the utility model proposes a kind of package assembly of fuel cell, comprising: a lower cover, its inside has an accommodation space, the end face of this lower cover is provided with an opening and communicates with this accommodation space, and an external thread part is set on the outer edge surface of this lower cover; One upper cover body has a roof, offers a perforate on this roof, and the outer edge surface of this roof extends a ring wall downwards, and the inner edge surface of this ring wall is provided with an internal thread part, and this internal thread part is screwed onto with the external thread part of lower cover; And a cell device group, be crimped between the end face of the roof bottom surface of this upper cover body and this lower cover.

The utlity model has following beneficial effect:

1, when assembling fuel cell, as long as this cell device group is positioned on the end face of this lower cover, then the internal thread part of upper cover body is screwed in the external thread part of lower cover and slowly screw, just can easily the crimping of cell device group be fixed between upper cover body and the lower cover.

When 2, upper cover body screwed in lower cover, upper cover body was that integral level ground moves down and compresses this cell device group, so can award the cell device group than uniform contact pressure.

For enabling further to understand feature of the present utility model and technology contents, see also following relevant detailed description of the present utility model and accompanying drawing, yet appended accompanying drawing is only for reference and explanation usefulness, is not to be used for the utility model is limited.

Description of drawings

Fig. 1 is the stereogram of the package assembly of the utility model fuel cell;

Fig. 2 is the exploded view of the package assembly of the utility model fuel cell;

Fig. 3 is another visual angle exploded view of the package assembly of the utility model fuel cell;

Fig. 4 is the section plan of the package assembly of the utility model fuel cell.

[main element description of reference numerals]

10 lower covers

11 accommodation spaces

111 fuel ports

112 fuel delivery outlets

113 positive electrode portions

12 openings

13 external thread parts

14 flanges

20 upper cover body

21 roofs

211 perforates

22 ring walls

23 internal thread parts

30 cell device groups

31 mea

32 conductor plates

33 wearing rings

40 negative electrode portions

50 gasket rings

60 fuel inlet pipes

61 fuel efferent ducts

70 methanol solutions

Embodiment

See also Fig. 1, Fig. 2, Fig. 3 and Figure 4 shows that the package assembly of fuel cell of the present utility model, comprising: a lower cover 10, a upper cover body 20, a cell device group 30 and a gasket rings 50.

These lower cover 10 external forms are roughly a cylinder, are that an electric conducting material is made.The inside of this lower cover 10 has an accommodation space 11, and the end face of this lower cover 10 is provided with an opening 12, and this opening 12 communicates with this accommodation space 11.The bottom surface of this lower cover 10 offers a fuel port 111 and a fuel delivery outlet 112 communicates with this accommodation space 11, the user can inject accommodation space 11 with fuel (for example methanol solution 70) by this fuel port 111, or allows fuel flow out outside accommodation space 11 by this fuel delivery outlet 112.The bottom surface of this accommodation space 11 is provided with a positive electrode portion 113, and it is one cylindric that its external form is roughly, and the upper end of this positive electrode portion 113 can be stretched in this accommodation space 11, and the below of this lower cover 10 can be stretched out in the lower end

One external thread part 13 is set on the outer edge surface of this lower cover 10, and the screw thread specification of this external thread part 13 can be the screw thread of angular thread, flat thread or any kind of, designs according to different behaviours in service.Outwards be convexly equipped with a flange 14 (flange) on these lower cover 10 outer edge surfaces in addition, this flange 14 is positioned at the below of this external thread part 13.

It is one circular that these upper cover body 20 external forms are roughly, and be that an insulating material is made, and this insulating material is Teflon (Teflon).This upper cover body 20 has a roof 21, the circle centre position of this roof 21 is offered the perforate 211 of a circle, and the outer edge surface of this roof 21 extends a ring wall 22 downwards, flange 14 external diameters of the external diameter of this ring wall 22 and this lower cover 10 are roughly the same, the inner edge surface of this ring wall 22 is provided with an internal thread part 23, the specification of this internal thread part 23 is consistent with the external thread part 13 of lower cover 10, so both can be screwed onto together.

This cell device group 30 is combined by different cell devices, this cell device group 30 comprises a mea (Membrane Electrode Assembly, MEA) 31, these mea 31 major functions are for isolating anode and negative electrode, but can allow the hydrogen ion transmission, the structure of this mea 31 is roughly cellular.Both sides in this mea 31 can be placed a conductor plate 32 respectively, and the material of this conductor plate 32 is a conductive material, make with graphite usually, help fluid distribution on mea 31 and a plurality of runners (flow channel) can be set on the conductor plate 32.Conductor plate 32 its middle bodies that wherein are positioned at mea 31 upsides have a negative electrode portion 40, and this negative electrode portion 40 makes with upside conductor plate 32 with being one of the forming.The both sides of this mea 31 are placed a wearing ring 33 in addition respectively, this wearing ring 33 is that an elastic material is made, and this wearing ring 33 can surround this conductor plate 32, can prevent that the fluid of mea both sides about in the of 31 or reactant from draining to outside lower cover 10 and the upper cover body 20 outward.

See also shown in Figure 4, when the package assembly of this fuel cell during in assembling, earlier this cell device group 30 is positioned on the end face of this lower cover 10, the user is as long as screw in the internal thread part 23 of upper cover body 20 external thread part 13 of lower cover 10 afterwards, and slowly screw and allow upper cover body 20 move down, just can like a cork this cell device group 30 be crimped between upper cover body 20 and the lower cover 10.Since upper cover body 20 when rotated, be integral level move down, can compare evenly so award cell device group 30 pressure, the material that does not have certain part bears bigger strength.

In addition when lower cover 10 and upper cover body 20 screw, the bottom surface of the end face of these lower cover 10 flanges 14 and upper cover body 20 ring walls 22 can crimping should circle ring 50, the purpose of this gasket rings 50 is to allow the better tightness of upper cover body 20 and lower cover 10.

When this lower cover 10, cell device group 30 and upper cover body 20 all assemble finish after, the tail end of this negative electrode portion 40 can stretch out in the top of this upper cover body 20 by the perforate 211 of this upper cover body 20, and the upper end of the positive electrode portion 113 of this lower cover 10 can abut to the conductor plate 32 of mea 31 lower ends, forms to electrically connect.

This positive electrode portion 113 and negative electrode portion 40 can be electrically connected to the positive and negative electrode end of a load (for example bulb, electrical appliance etc.) respectively, form a current supply circuit.And then a fuel inlet pipe 60 is connected to this fuel port 111, and a fuel efferent duct 61 is connected to this fuel delivery outlet 112, by a pumping (figure does not show) with the methanol solution 70 (mixed solution of methyl alcohol and water: CH ₃OH+H ₂O) be conveyed in this accommodation space 11 by fuel inlet pipe 60.This methanol solution 70 can produce electrochemical reaction and resolve into carbon dioxide, hydrogen ion and electronics in mea 31 lower ends, hydrogen ion and electronics can pass this mea 31 and arrive opposite side then, and hydrogen ion can combine with the airborne oxygen of mea 31 upper ends and be reduced into water, and electronics can be conducted in the load by this negative electrode portion 40, drives the load start.Remaining methanol solution 70 can be flowed out by fuel delivery outlet 112, and exports back in this pumping by this fuel efferent duct 61.

Whereby, the utlity model has following beneficial effect:

1, when assembling fuel cell, as long as this cell device group 30 is positioned on the end face of this lower cover 10, then the internal thread part 23 of upper cover body 20 is screwed in the external thread part 13 of lower covers 10 and slowly screw, just can easily 30 crimping of cell device group be fixed between upper cover body 20 and the lower cover 10.

When 2, upper cover body 20 screwed in lower covers 10, upper cover body 20 was that integral level ground moves down and compresses this cell device group 30, so can award cell device group 30 than uniform contact pressures.

But the above only is preferred embodiment of the present utility model; non-ly be intended to limit to protection range of the present utility model; therefore the equivalence done of every utilization the utility model specification and accompanying drawing content changes, and all in like manner all is contained in the rights protection scope of the present utility model explanation hereby.

Claims

1, a kind of package assembly of fuel cell is characterized in that, comprising:

One lower cover, its inside has an accommodation space, and the end face of this lower cover is provided with an opening and communicates with this accommodation space, and an external thread part is set on the outer edge surface of this lower cover;

One upper cover body has a roof, offers a perforate on this roof, and the outer edge surface of this roof extends a ring wall downwards, and the inner edge surface of this ring wall is provided with an internal thread part, and this internal thread part is screwed onto with the external thread part of lower cover; And

One cell device group is crimped between the end face of the roof bottom surface of this upper cover body and this lower cover.

2, the package assembly of fuel cell as claimed in claim 1, it is characterized in that this cell device group comprises a mea, two conductor plates are arranged at this mea two ends up and down respectively, two wearing rings are arranged at this mea two ends up and down respectively, and surround this conductor plate.

3, the package assembly of fuel cell as claimed in claim 2, it is characterized in that, the bottom surface of this lower cover offers a fuel port and a fuel delivery outlet communicates with this accommodation space, and this fuel port connects a fuel inlet pipe, and this fuel delivery outlet connects a fuel efferent duct.

4, the package assembly of fuel cell as claimed in claim 3 is characterized in that, the conductor plate of this mea top has a negative electrode portion.

5, the package assembly of fuel cell as claimed in claim 4, it is characterized in that, the bottom surface of this accommodation space has a positive electrode portion, and this positive electrode portion upper end abuts to the conductor plate of this mea below, and the lower end of this positive electrode portion stretches out in the below of this lower cover.

6, the package assembly of fuel cell as claimed in claim 5 is characterized in that, this accommodation space stores a methanol solution.

7, the package assembly of fuel cell as claimed in claim 6 is characterized in that, this external thread part and internal thread part are angular thread or flat thread.

8, the package assembly of fuel cell as claimed in claim 7 is characterized in that, the outer edge surface of this lower cover bottom outwards is convexly equipped with a flange, crimping one gasket rings between the bottom surface of the end face of this flange and the ring wall of this upper cover body.