CN100359742C - Flat-plate type direct methanol fuel cell and its producing method - Google Patents
Flat-plate type direct methanol fuel cell and its producing method Download PDFInfo
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- CN100359742C CN100359742C CNB2004100338809A CN200410033880A CN100359742C CN 100359742 C CN100359742 C CN 100359742C CN B2004100338809 A CNB2004100338809 A CN B2004100338809A CN 200410033880 A CN200410033880 A CN 200410033880A CN 100359742 C CN100359742 C CN 100359742C
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- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 title claims abstract description 129
- 239000000446 fuel Substances 0.000 title claims abstract description 55
- 238000000034 method Methods 0.000 title claims description 33
- 239000012528 membrane Substances 0.000 claims abstract description 48
- 238000009713 electroplating Methods 0.000 claims abstract description 15
- 239000000758 substrate Substances 0.000 claims abstract description 14
- 229910052802 copper Inorganic materials 0.000 claims description 55
- 239000010949 copper Substances 0.000 claims description 55
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 50
- 239000000463 material Substances 0.000 claims description 38
- 229920002120 photoresistant polymer Polymers 0.000 claims description 17
- 229910000906 Bronze Inorganic materials 0.000 claims description 14
- 239000010974 bronze Substances 0.000 claims description 14
- KUNSUQLRTQLHQQ-UHFFFAOYSA-N copper tin Chemical compound [Cu].[Sn] KUNSUQLRTQLHQQ-UHFFFAOYSA-N 0.000 claims description 14
- 230000008569 process Effects 0.000 claims description 13
- 239000000126 substance Substances 0.000 claims description 12
- LQBJWKCYZGMFEV-UHFFFAOYSA-N lead tin Chemical compound [Sn].[Pb] LQBJWKCYZGMFEV-UHFFFAOYSA-N 0.000 claims description 11
- 238000004519 manufacturing process Methods 0.000 claims description 11
- 239000003795 chemical substances by application Substances 0.000 claims description 8
- 238000007747 plating Methods 0.000 claims description 8
- 238000002679 ablation Methods 0.000 claims description 7
- 238000003466 welding Methods 0.000 claims description 6
- 150000001879 copper Chemical class 0.000 claims description 5
- 230000008021 deposition Effects 0.000 claims description 5
- 239000002657 fibrous material Substances 0.000 claims description 5
- 239000011188 CEM-1 Substances 0.000 claims description 4
- 239000011190 CEM-3 Substances 0.000 claims description 4
- 101100257127 Caenorhabditis elegans sma-2 gene Proteins 0.000 claims description 4
- MSNOMDLPLDYDME-UHFFFAOYSA-N gold nickel Chemical compound [Ni].[Au] MSNOMDLPLDYDME-UHFFFAOYSA-N 0.000 claims description 4
- 229920005989 resin Polymers 0.000 claims description 4
- 239000011347 resin Substances 0.000 claims description 4
- 238000006116 polymerization reaction Methods 0.000 claims description 3
- 239000011230 binding agent Substances 0.000 claims description 2
- 230000015572 biosynthetic process Effects 0.000 claims description 2
- 239000007784 solid electrolyte Substances 0.000 claims description 2
- 239000011248 coating agent Substances 0.000 claims 1
- 238000000576 coating method Methods 0.000 claims 1
- 230000000149 penetrating effect Effects 0.000 abstract 1
- 239000010410 layer Substances 0.000 description 48
- 229910052751 metal Inorganic materials 0.000 description 18
- 239000002184 metal Substances 0.000 description 18
- 238000005516 engineering process Methods 0.000 description 11
- 230000005611 electricity Effects 0.000 description 5
- 230000008901 benefit Effects 0.000 description 3
- 239000003054 catalyst Substances 0.000 description 3
- 239000003822 epoxy resin Substances 0.000 description 3
- 230000006872 improvement Effects 0.000 description 3
- 229920000647 polyepoxide Polymers 0.000 description 3
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 2
- 239000007864 aqueous solution Substances 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- GPRLSGONYQIRFK-UHFFFAOYSA-N hydron Chemical compound [H+] GPRLSGONYQIRFK-UHFFFAOYSA-N 0.000 description 2
- 239000004922 lacquer Substances 0.000 description 2
- 239000011241 protective layer Substances 0.000 description 2
- 239000010936 titanium Substances 0.000 description 2
- 229910052719 titanium Inorganic materials 0.000 description 2
- YZCKVEUIGOORGS-UHFFFAOYSA-N Hydrogen atom Chemical compound [H] YZCKVEUIGOORGS-UHFFFAOYSA-N 0.000 description 1
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- 229920000557 Nafion® Polymers 0.000 description 1
- 239000004642 Polyimide Substances 0.000 description 1
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 1
- -1 acryl Chemical group 0.000 description 1
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 238000010923 batch production Methods 0.000 description 1
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- 239000003292 glue Substances 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
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- 238000007254 oxidation reaction Methods 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
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- 229910000679 solder Inorganic materials 0.000 description 1
- 235000021419 vinegar Nutrition 0.000 description 1
- 239000000052 vinegar Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/30—Hydrogen technology
- Y02E60/50—Fuel cells
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
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- Fuel Cell (AREA)
- Inert Electrodes (AREA)
Abstract
The present invention relates to a flat plate type direct methanol fuel cell which comprises an integral cathode electrode plate, a proton exchange membrane member unit, an intermediate contact layer, an integral anode electrode plate and a bottom plate of a flow passage, wherein the integral cathode electrode plate comprises a first substrate, a plurality of cathode electrode zones and a plurality of first conducting through holes; the cathode electrode zones are formed on the front surface and the back surface of the first substrate by electroplating, a plurality of penetrating holes are densely arranged in the cathode electrode zones, and the first conducting through holes are arranged outside the cathode electrode zones and are electrically connected to the cathode electrode zones by conducting wires; the proton exchange membrane member unit comprises a plurality of proton exchange membrane members and a plurality of second conducting through holes arranged corresponding to the first conducting through holes; the integral anode electrode plate comprises a second substrate, a plurality of anode electrode zones arranged corresponding to the cathode electrode zones and a plurality of third conducting contacts arranged corresponding to the first conducting through holes.
Description
Technical field
The present invention relates to a kind of fuel cell, refer in particular to a kind of structure and manufacture method thereof of plate direct methanol fuel cell of slimming.
Background technology
(Direct Methanol Fuel Cell is that a kind of dilution methanol aqueous solution of liquid state or gaseous state that utilizes acts as a fuel DMFC) to direct methanol fuel cell, chemical energy is converted to the Blast Furnace Top Gas Recovery Turbine Unit (TRT) of electric power by electrochemical program.Compare with traditional generation mode, direct methanol fuel cell has low pollution, low noise, high-energy-density and higher advantages such as energy conversion efficiency, be forward-looking clean energy, applicable field comprises household system, electronic product, means of transportation, military equipment, space industry etc.
The operation principles of direct methanol fuel cell is to carry out oxidation reaction with methanol aqueous solution at anode catalyst (catalyst) layer, produces hydrogen ion (H
+), electronics (e
-) and carbon dioxide (CO
2), wherein hydrogen ion is passed to negative electrode via electrolyte, and electronics is passed to negative electrode after being passed to the load work done via external circuit again, and the oxygen that supply with cathode terminal this moment can carry out reduction reaction at the cathode catalysts layer with hydrogen ion and electronics, and produces water.
Fuel cell generally all is made up of several elementary cells.Because the voltage that each elementary cell can provide is very little, many elementary cells of therefore must connecting when using are to reach the output of necessary operations voltage.
Fig. 1 and Fig. 2 show respectively traditional technology plate direct methanol fuel cell 10 upper viewing view and in Fig. 1 the cross-sectional view shown in the tangent line I-I.As Fig. 1 and shown in Figure 2, traditional plate direct methanol fuel cell 10 includes a bipolar plates assembly 12 and a methanol fuel accumulator tank 14.Bipolar plate assembly 12 comprises the bipolar metal electrode net 122,123,124,125 that upper frame 51, underframe 52, cathodic electricity polar net 121, a plurality of process are handled around folding, and anode electrode net 126, and be located in a plurality of proton exchange membrane (Membrane Electrode Assembly, MEA) 131,132,133,134,135 between the two relative anodic-cathodic nets.The bipolar metal electrode net 122,123,124,125 that upper frame 51, underframe 52, cathodic electricity polar net 121, a plurality of process are handled around folding, and anode electrode net 126 mode of establishing with mutual storehouse folder and proton exchange membrane 131,132,133,134,135 is set firmly wherein, thereby constitute five basic battery units 21,22,23,24 and 25 of series connection with leakproof glue or epoxy resin 53.The bipolar metal electrode net 122,123,124,125 that cathodic electricity polar net 121, a plurality of process are handled around folding, and anode electrode net 126 is to add gold-plated processing with titanium metal net.
Traditional plate direct methanol fuel cell 10 comprises the basic battery unit 21,22,23,24 and 25 of five of series connection, and wherein battery unit 21 is made of with bipolar metal electrode net 122 cathodic electricity polar net 121, proton exchange membrane 131; Battery unit 22 is made of with bipolar metal electrode net 123 (as the anode of battery unit 22) bipolar metal electrode net 122 (as the negative electrode of battery unit 22), proton exchange membrane 132; Battery unit 23 is made of with bipolar metal electrode net 124 (as the anode of battery unit 23) bipolar metal electrode net 123 (as the negative electrode of battery unit 23), proton exchange membrane 133; Battery unit 24 is made of with bipolar metal electrode net 125 (as the anode of battery unit 24) bipolar metal electrode net 124 (as the negative electrode of battery unit 24), proton exchange membrane 134; Battery unit 25 is made of with anode electrode net 126 bipolar metal electrode net 125 (as the negative electrode of battery unit 25), proton exchange membrane 135.Can provide 0.6 volt of voltage to calculate with each basic battery unit, the classic flat-plate formula direct methanol fuel cell 10 of aforesaid five series connection can be supplied the voltage of 0.6 * 5=3.0 volt.
The shortcoming of aforesaid classic flat-plate formula direct methanol fuel cell 10 is the upper and lower framework 51,52 of its bipolar plate assembly 12, constituted by glass reinforced resin materials such as FR4, its thickness is obviously blocked up and seem heavy, and can't reach the requirement of slimming day by day of further portable electronic product.And the electrode network 121,122,123,124,125 and 126 of aforementioned bipolar plates assembly 12 all is to add gold-plated processing with titanium metal net, and cost is very expensive.Moreover, the bipolar metal electrode net 122,123,124,125 that a plurality of processes of classic flat-plate formula direct methanol fuel cell 10 are handled around folding is not to be incorporated on the upper and lower framework, and need in addition in advance with the recessed folding of artificial treatment, it is time-consuming that ten minutes bothers, and be difficult for reaching the volume production scale.
Summary of the invention
In view of this, main purpose of the present invention is to provide a kind of plate direct methanol fuel cell of slimming of improvement, to improve aforesaid shortcoming.
Another object of the present invention is to provide a kind of manufacture method of plate direct methanol fuel cell of slimming of improvement, to reach the scale that to produce in batches.
For reaching above-mentioned purpose, according to a preferred embodiment of the invention, the invention provides a kind of plate direct methanol fuel cell, its structure includes:
Integrated cathode electrode plate, comprise first base material, a plurality of cathode electrodes zone, a plurality of first conductive through hole, wherein said cathode electrode zone is the tow sides that are formed at described first base material with plating, be densely covered with a plurality of perforation in it, and described first conductive through hole is located at outside the described cathode electrode zone and be electrically connected to described cathode electrode zone with lead;
The proton exchange membrane unit comprises a plurality of proton exchange membrane, disposes with respect to described a plurality of cathode electrodes zone;
The inter-engagement layer, constituted by one deck joint fastener (Bonding Sheet) at least, included plurality of openings, in order to hold described a plurality of proton exchange membrane respectively, and a plurality of second conductive through holes, dispose with respect to described a plurality of first conductive through holes;
Integrated anode electrode plate, a plurality of anode electrode regions that include second base material, dispose, and a plurality of the 3rd conductive junction points that dispose with respect to a plurality of first conductive through holes with respect to described a plurality of cathode electrodes zone; Wherein said anode electrode regions is the tow sides that are formed at described second base material with plating, is densely covered with a plurality of perforation in it; And
The runner base plate;
By second conductive through hole of first conductive through hole on first base material, middle close binder, the 3rd conductive junction point on second base material, make the regional configuration of connecting with the anode electrode regions formation on this second base material of cathode electrode on this first base material.
Simultaneously, the present invention also provides a kind of method of making the integrated cathode electrode plate of plate direct methanol fuel cell, includes the following step:
Provide a copper clad laminate (CCL), the second bronze medal layer that comprises a substrate, is overlying on the first bronze medal layer of this upper surface of base plate and is overlying on this base lower surface;
Predetermined electrode zone on the described copper clad laminate processing procedure of holing is to form a plurality of perforation that run through the described first bronze medal layer, substrate and the second bronze medal layer on this copper clad laminate; Simultaneously outside this predetermined electrode zone, produce plurality of through holes;
Deposition one chemical copper layer on described copper clad laminate and in described a plurality of perforation and the through hole;
On described copper clad laminate, define the predetermined electrode zone with photoresist;
Carrying out electroplating process, is the plating resist agent with described photoresist, in the zone that is not covered by photoresist, comprises in the described predetermined electrode zone, electroplates one deck copper electroplating layer and plate one deck tin lead layer on this copper electroplating layer;
Divest described photoresist;
Carry out a bronze medal etch process, with not by tin lead layer cover the zone in the chemical copper layer and first, second copper layer ablation on the described copper clad laminate;
The described tin lead layer of ablation exposes described copper electroplating layer;
Form the predetermined electrode zone and at the extra-regional conductive through hole of this predetermined electrode;
Zone beyond in described predetermined electrode zone is coated with an anti-welding resistance agent; And
On described copper electroplating layer, electroplate a conductive protecting layer.
For making the reader can further understand feature of the present invention and technology contents, see also following about detailed description of the present invention and accompanying drawing.Yet the usefulness of appended graphic only for reference and aid illustration is not to be used for the present invention is limited.
Description of drawings
Fig. 1 shows the last view plane schematic diagram of the plate direct methanol fuel cell of traditional technology.
The plate direct methanol fuel cell that Fig. 2 shows traditional technology is the cross-sectional view shown in the tangent line I-I in Fig. 1.
Fig. 3 shows the each several part decomposing schematic representation of direct methanol fuel cell structure of the flat slimming of the preferred embodiment of the present invention.
Fig. 4 to Figure 12 is the integrated slimming cathode electrode plate in the direct methanol fuel cell structure of explanation flat slimming of the present invention and the manufacture method schematic diagram of integrated slimming anode electrode plate.
Symbol description among the figure:
10 plate direct methanol fuel cells, 12 bipolar plate assemblies, 14 methanol fuel accumulator tanks
21 basic battery unit 22 basic battery unit 23 basic battery units
24 basic battery unit 25 basic battery unit 30 copper clad laminates 32 substrates
34 bronze medal layers, 36 bronze medal layer, 42 perforation, 46 chemical copper layers
48 photoresists, 49 predetermined electrodes zone, 51 upper frames, 52 underframes
The 72 anti-welding resistance agent of 53 epoxy resin, 62 bronze medal layers, 64 tin lead layer
74 nickel gold protective layer, 121 cathodic electricity polar nets, 122 bipolar metal electrode nets
123 bipolar metal electrode net 124 bipolar metal electrode net 125 bipolar metal electrode nets
126 anode electrode nets, 131 proton exchange membrane, 132 proton exchange membrane
133 proton exchange membrane, 134 proton exchange membrane, 135 proton exchange membrane
The direct methanol fuel cell of 20 flat slimmings
200 integrated slimming cathode electrode plates, 201 cathode electrode zones
204 cathode electrode zones, 203 cathode electrodes zone, 202 cathode electrodes zone
205 cathode electrodes zone, 210 base materials, 211 conductive through holes, 212 conductive through holes
The 221 affixed perforation of 213 conductive through holes, 214 conductive through holes, 215 conductive through holes
222 affixed perforation 223 affixed perforation 224 affixed perforation 250 leads
251 leads, 252 leads, 253 leads, 254 leads, 261 positive contact
300 proton exchange membrane unit, 301 first proton exchange membrane
302 second proton exchange membrane 303 the 3rd proton exchange membrane
304 the 4th proton exchange membrane 305 the 5th proton exchange membrane
400 inter-engagement layers, 401 perforate, 402 perforates, 403 perforates
404 perforates, 405 perforates, 411 conductive through holes, 412 conductive through holes
The 421 affixed perforation of 413 conductive through holes, 414 conductive through holes, 415 conductive through holes
422 affixed perforation 423 affixed perforation 424 affixed perforation
500 integrated slimming anode electrode plate 501 anode electrode regions
502 anode electrode regions, 503 anode electrode regions, 504 anode electrode regions
505 anode electrode regions, 511 conductive junction points, 512 conductive junction points, 513 conductive junction points
The 521 affixed perforation 522 affixed perforation of 514 conductive junction points, 515 conductive junction points
523 affixed perforation 524 affixed perforation 600 runner base plates 601 fuel flow channels
621 affixed perforation 622 affixed perforation 623 affixed perforation 624 affixed perforation
Embodiment
See also Fig. 3, the each several part decomposing schematic representation of direct methanol fuel cell 20 structures of the flat slimming of its demonstration preferred embodiment of the present invention.Be simplified illustration, the structure of the direct methanol fuel cell 20 of flat slimming of the present invention is that example explains with five basic battery units of series connection, but one skilled in the art should appreciate that the present invention only is limited in five basic battery units of series connection, the fuel cell that the basic battery unit of other number is formed is also used the category of containing in the present invention.As shown in Figure 3, the structure of the direct methanol fuel cell 20 of flat slimming of the present invention includes integrated slimming cathode electrode plate 200, proton exchange membrane (Membrane ElectrodeAssembly, MEA) unit 300, inter-engagement layer 400, integrated slimming anode electrode plate 500 and runner base plate 600.
Integrated slimming cathode electrode plate 200 includes base material 210, cathode electrode zone 201,202,203,204 and 205, conductive through hole 211,212,213,214 and 215.Cathode electrode zone 201,202,203,204 and 205 and conductive through hole 211,212,213,214 and 215 beyond base material 210 surfaces on be coated with anti-welding green lacquer (Solder Resist).In 210 4 corners of base material affixed perforation 221,222,223 and 224 is arranged in addition.Integrated slimming cathode electrode plate 200 is that wherein base material 210 can be constituted by polymeric fiber material with made with the method for printed circuit board (PCB) (PCB) processing procedure compatibility, as FR-1, FR-2, FR-3, FR-4, CEM-1 or CEM-3 of ANSI level or the like.A plurality of perforation are all contained in each cathode electrode zone 201,202,203,204 and 205, and its percent opening (being defined as ratio * 100% of perforation field and each cathode electrode region area) is more preferably greater than 50%.Conductive through hole 212 on the base material 210 is conducted via lead 250 and cathode electrode zone 201, conductive through hole 213 is conducted via lead 251 and cathode electrode zone 202, conductive through hole 214 is conducted via lead 252 and cathode electrode zone 203, and conductive through hole 215 is conducted via lead 253 and cathode electrode zone 204.Cathode electrode zone 205 is connected to positive pole (negative electrode) contact 261 via lead 254.Conductive through hole 211, it is connected with external circuit with positive contact 261 as negative pole (anode) contact, constitutes the loop of battery.
Proton exchange membrane unit 300 includes first proton exchange membrane 301, second proton exchange membrane 302, the 3rd proton exchange membrane 303, the 4th proton exchange membrane 304 and the 5th proton exchange membrane 305.Each proton exchange membrane in the proton exchange membrane unit 300 can adopt the dielectric film as the Nafion of E.I.Du Pont Company, or has other solid electrolyte membrane of identical function.
Inter-engagement layer 400 is made of one deck joint fastener (Bonding Sheet) at least, this joint fastener can be the materials such as PREPREG resin film in normally used partially polymerized stage (B-stage) in the printed circuit board (PCB) processing procedure, can handle to reach complete polymerization amount of cure in 30 minutes under 120 ℃ temperature.Inter-engagement layer 400 includes five perforates 401,402,403,404 and 405, in order to hold first proton exchange membrane 301, second proton exchange membrane 302, the 3rd proton exchange membrane 303, the 4th proton exchange membrane 304 and the 5th proton exchange membrane 305 respectively.In a side of perforate 401, the position with respect to the conductive through hole 211 of base material 210 is provided with a conductive through hole 411.And, correspond respectively to the conductive through hole 212,213,214 of base material 210 and 215 position in identical each sides of perforate 402,403,404 and 405, be provided with conductive through hole 412,413,414 and 415.In other preferred embodiment of the present invention, inter-engagement layer 400 can include a supporting layer in addition, and it is constituted by polymeric fiber material, as FR-1, FR-2, FR-3, FR-4, CEM-1 or CEM-3 or the like.400 4 corner of inter-engagement layer are provided with affixed perforation 421,422,423 and 424 in addition with respect to the affixed perforation 221,222,223 and 224 of base material 210.
Integrated slimming anode electrode plate 500 includes base material 510, anode electrode regions 501,502,503,504 and 505, conductive junction point 511,512,513,514 and 515.Wherein, conductive junction point 511,512,513,514 and 515 and anode electrode regions 501,502,503,504 and 505 define simultaneously and finish.Affixed perforation 221,222,223 and 224 in 510 4 corners of base material with respect to base material 210 is provided with affixed perforation 521,522,523 and 524 in addition.With made with the method for printed circuit board (PCB) (PCB) processing procedure compatibility, wherein base material 510 can be constituted by polymeric fiber material integrated slimming anode electrode plate 500 equally, as FR-1, FR-2, FR-3, FR-4, CEM-1 or CEM-3 of ANSI level or the like.Each anode electrode regions 501,502,503,504 and 505 all contains a plurality of perforation, and its percent opening is more preferably greater than 50%.
Default fuel flow channel 601 is arranged on the runner base plate 600, and with respect to the affixed perforation 221,222,223 and 224 of base material 210, other is provided with affixed perforation 621,622,623 and 624.Runner base plate 600 can be constituted by the polymerization material, as epoxy resin, poly-inferior vinegar film (polyimide) or acryl (Acrylic) etc., and washes out predetermined flow passage structure with mechanical lathe tool, or makes with injection molding method.Therefore flow passage structure is not that emphasis of the present invention does not add and gives unnecessary details.
During assembling, that the storehouse bonding in regular turn of integrated slimming cathode electrode plate 200, proton exchange membrane unit 300, inter-engagement layer 400 and integrated slimming cathode electrode plate 500 is affixed.Wherein, the conductive through hole 211,212,213,214 and 215 of integrated slimming cathode electrode plate 200 is aimed at the conductive through hole 411,412,413,414 and 415 of inter-engagement layer 400 respectively, aim at the conductive junction point 511,512,513,514 and 515 of integrated slimming anode electrode plate 500 simultaneously, and weld set respectively.Like this, make the cathode electrode zone 201 of integrated slimming cathode electrode plate 200 via the conductive junction point 512 of lead 250, conductive through hole 212 and 412, integrated slimming anode electrode plate 500, be electrically connected to the anode electrode regions 502 of integrated slimming anode electrode plate 500; And make the cathode electrode zone 202 of integrated slimming cathode electrode plate 200 via the conductive junction point 513 of lead 251, conductive through hole 213 and 413, integrated slimming anode electrode plate 500, be electrically connected to the anode electrode regions 503 of integrated slimming anode electrode plate 500, by that analogy, constitute the fuel cell of the basic battery unit of five series connection.The conductive through hole 211 of integrated slimming cathode electrode plate 200 (negative pole of the battery that acts as a fuel), then, be electrically connected to the conductive junction point 511 and the anode electrode regions 501 of integrated slimming anode electrode plate 500 by the conductive through hole 411 of inter-engagement layer 400.
From the above, the present invention utilizes integrated slimming cathode electrode plate 200 and integrated slimming anode electrode plate 500 in direct methanol fuel cell 20 structures of the ripe flat slimming that printed-board technology constituted to have frivolous, the convenient advantage of making.By the lead layout that is in the layout of on the base material, more can further control fuel cell and external circuit be integrated.
Below, continue the integrated slimming cathode electrode plate 200 in direct methanol fuel cell 20 structures of the flat slimming of the present invention and the manufacture method of integrated slimming anode electrode plate 500 to be described with Fig. 4 to Figure 12.
At first, see also Fig. 4, provide a copper clad laminate (Copper Clad Laminate is called for short CCL) 30, only several centimetres of its thickness, the copper layer 36 that comprises a substrate 32, is overlying on the copper layer 34 of substrate 32 upper surfaces and is overlying on substrate 32 lower surfaces.
As shown in Figure 5, copper clad laminate 30 is tailored cut into the required size size after, the processing procedure of holing of the predetermined electrode zone on copper clad laminate 30 is to form a plurality of perforation 42 that run through copper layer 34, substrate 32 and copper layer 36 on copper clad laminate 30.According to a preferred embodiment of the invention, the gross area (percent opening) of all perforation 42 need account for this predetermined electrode zone more than 50%.
Then, as shown in Figure 6, on copper clad laminate 30 and the deposition one chemical copper layer 46 in 42 of boring a hole.Chemical copper layer 46 is with chemical mode but not plating mode deposition, therefore non-selectively uniform deposition on copper clad laminate 30 and 42 inwalls of boring a hole.
As shown in Figure 7, on copper clad laminate 30, define predetermined electrode zone 49 with photoresist (dry film) 48.With the integrated slimming cathode electrode plate 200 in the construction drawing 3 is example, and the predetermined electrode zone 49 of photoresist 48 definition is cathode electrode zone 201～205, and photoresist 48 defines lead 250～254 and positive contact 261 (Fig. 7 does not show) simultaneously.Integrated slimming cathode electrode plate 200 among Fig. 3, conductive through hole 211～215th completes simultaneously with perforation 42 in the predetermined electrode zone.If with the integrated slimming anode electrode plate 500 in the construction drawing 3 is example, then the predetermined electrode zone 49 of photoresist 48 definition is anode electrode regions 501～505, and photoresist 48 defines the join domain (Fig. 7 does not show) between contact 511～515 and this contact and the anode electrode regions simultaneously.
As shown in Figure 8, then carrying out electroplating process, is the plating resist agent with photoresist 48, in the zone that is not covered by photoresist 48, comprises in the predetermined electrode zone 49, electroplates layer of copper layer 62 and plate one deck tin lead layer 64 on copper layer 62.
As shown in Figure 9, then photoresist 48 is divested.
As shown in figure 10, carry out a bronze medal etch process, with interior chemical copper layer 46 and copper layer 34 on the copper clad laminate 30 and 36 ablations in zone that do not covered by tin lead layer 64.Then, carry out another etch process again, ablation tin lead layer 64 exposes copper layer 62, so promptly tentatively finishes the manufacturing as integrated slimming anode electrode plate 500 among Fig. 3.
And if the integrated slimming cathode electrode plate 200 in the shop drawings 3 then need be proceeded the step of Figure 11 and Figure 12.As shown in figure 11, for avoiding in the follow-up scolding tin process substrate damage or causing short circuit, need be coated with an anti-welding resistance agent (be commonly called as and be green lacquer) 72 again.This anti-welding resistance agent is that printed circuit board industry is commonly used, and it is to constitute with photoactive material, and the yellow light lithography of available tradition defines needs protected zone on the battery lead plate 200.
Then, oxidized when the long-term ingress of air for avoiding integrated slimming cathode electrode plate 200 as shown in figure 12, can carry out an electroplating process again, on electrode, further plate one deck nickel gold protective layer 74.
In sum, the direct methanol fuel cell structure of the flat slimming of improvement of the present invention is compared with traditional technology, comprises following advantage at least:
(1) key component of fuel cell structure comprises that integrated slimming cathode electrode plate 200 and integrated slimming anode electrode plate 500 all make with printed-board technology, and adopts copper clad laminate more can reduce the manufacturing cost of fuel cell as initial base material.
(2) key component of making fuel cell structure with the printed-board technology of maturation comprises integrated slimming cathode electrode plate 200 and integrated slimming anode electrode plate 500, can reach the batch process scale with two-sided processing procedure.
Therefore (3) integrated slimming cathode electrode plate 200 of the present invention and integrated slimming anode electrode plate 500 do not need as traditional technology with manually can to produce in a large number around the folding electrode network, and directly the storehouse assembling is more accurate and make things convenient for.
(4) with the printed-board technology manufacturing, the more long-pending body control circuit of control lithium battery and fuel cell can be incorporated on the substrate simultaneously, improve the value of fuel cell.
The above only is the preferred embodiments of the present invention, and all equalizations of doing according to content of the present invention change and modify, and all should belong in protection scope of the present invention.
Claims (12)
1, a kind of plate direct methanol fuel cell is characterized in that, includes:
Integrated cathode electrode plate, comprise first base material, a plurality of cathode electrodes zone, a plurality of first conductive through hole, wherein said cathode electrode zone is the tow sides that are formed at described first base material with plating, be densely covered with a plurality of perforation in it, and described first conductive through hole is located at outside the described cathode electrode zone and be electrically connected to described cathode electrode zone with lead;
The proton exchange membrane unit comprises a plurality of proton exchange membrane, disposes with respect to described a plurality of cathode electrodes zone;
The inter-engagement layer is made of one deck joint fastener at least, includes plurality of openings, in order to holding described a plurality of proton exchange membrane respectively, and a plurality of second conductive through hole, dispose with respect to described a plurality of first conductive through holes;
Integrated anode electrode plate, a plurality of anode electrode regions that include second base material, dispose, and a plurality of the 3rd conductive junction points that dispose with respect to a plurality of first conductive through holes with respect to described a plurality of cathode electrodes zone; Wherein said anode electrode regions is the tow sides that are formed at described second base material with plating, is densely covered with a plurality of perforation in it; And
The runner base plate;
When wherein assembling, be that the storehouse bonding in regular turn of described integrated cathode electrode plate, described proton exchange membrane unit, described inter-engagement layer and described integrated anode electrode plate is affixed; Wherein, first conductive through hole of described integrated cathode electrode plate is aimed at second conductive through hole of inter-engagement layer respectively, aims at the 3rd conductive junction point of described integrated anode electrode plate simultaneously, and welds set respectively; By second conductive through hole of first conductive through hole on first base material, middle close binder, the 3rd conductive junction point on second base material, make the regional configuration of connecting with the anode electrode regions formation on this second base material of cathode electrode on this first base material.
2, plate direct methanol fuel cell as claimed in claim 1; wherein said cathode electrode zone includes a bottom copper, be located at a chemical copper layer on this bottom copper, be located at the copper electroplating layer on this chemical copper layer, and is located at the conductive protecting layer on this copper electroplating layer.
3, plate direct methanol fuel cell as claimed in claim 2, wherein said conductive protecting layer are nickel gold electrodeposited coating.
4, plate direct methanol fuel cell as claimed in claim 1, wherein said proton exchange membrane are solid electrolyte membrane.
5, plate direct methanol fuel cell as claimed in claim 1, wherein said joint fastener are the PREPREG resin film in partially polymerized stage of using in the printed circuit board (PCB) processing procedure.
6, plate direct methanol fuel cell as claimed in claim 1, wherein said joint fastener are that the PREPREG resin film in partially polymerized stage is handled the joint fastener that reached complete polymerization amount of cure in 30 minutes under 120 ℃ temperature.
7, plate direct methanol fuel cell as claimed in claim 1, wherein said first base material is constituted by polymeric fiber material.
8, plate direct methanol fuel cell as claimed in claim 7, wherein said first base material is constituted by the polymeric fiber material of FR-1, FR-2, FR-3, FR-4, CEM-1 or the CEM-3 of ANSI level.
9, a kind of method of making the integrated cathode electrode plate of plate direct methanol fuel cell includes:
Provide a copper clad laminate, the second bronze medal layer that comprises a substrate, is overlying on the first bronze medal layer of this upper surface of base plate and is overlying on this base lower surface;
Predetermined electrode zone on the described copper clad laminate processing procedure of holing is to form a plurality of perforation that run through the described first bronze medal layer, substrate and the second bronze medal layer on this copper clad laminate; Simultaneously outside this predetermined electrode zone, produce plurality of through holes;
Deposition one chemical copper layer on described copper clad laminate and in described a plurality of perforation and the through hole;
On described copper clad laminate, define the predetermined electrode zone with photoresist;
Carrying out electroplating process, is the plating resist agent with described photoresist, in the zone that is not covered by photoresist, comprises in the described predetermined electrode zone, electroplates one deck copper electroplating layer and plate one deck tin lead layer on this copper electroplating layer;
Divest described photoresist;
Carry out a bronze medal etch process, with not by tin lead layer cover the zone in the chemical copper layer and first, second copper layer ablation on the described copper clad laminate; And
The described tin lead layer of ablation exposes described copper electroplating layer; Tentatively to finish the making of electrode zone and the conductive through hole outside this electrode zone.
10, method as claimed in claim 9, wherein after the described tin lead layer of ablation, this method still includes the following step:
Zone beyond in described predetermined electrode zone is coated with an anti-welding resistance agent; And
On described copper electroplating layer, electroplate a conductive protecting layer.
11, method as claimed in claim 10, wherein said conductive protecting layer are nickel-gold layer.
12, method as claimed in claim 9, wherein said a plurality of perforation area occupied are greater than 50% of the area in described predetermined electrode zone.
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| CNB2004100338809A CN100359742C (en) | 2004-04-15 | 2004-04-15 | Flat-plate type direct methanol fuel cell and its producing method |
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| CNB2004100338809A CN100359742C (en) | 2004-04-15 | 2004-04-15 | Flat-plate type direct methanol fuel cell and its producing method |
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| CN100359742C true CN100359742C (en) | 2008-01-02 |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1242616A (en) * | 1998-07-22 | 2000-01-26 | 中国科学院大连化学物理研究所 | Fuel cell set having separated chamber structure |
| US6127058A (en) * | 1998-10-30 | 2000-10-03 | Motorola, Inc. | Planar fuel cell |
| CN2580609Y (en) * | 2002-10-24 | 2003-10-15 | 江苏隆源双登电源有限公司 | Plastic bipolar plate of direct methanol fuel cell |
| CN1469500A (en) * | 2002-07-17 | 2004-01-21 | 山 黄 | Composite leading and collecting plate for fuel cell and its manufacture |
-
2004
- 2004-04-15 CN CNB2004100338809A patent/CN100359742C/en not_active Expired - Lifetime
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1242616A (en) * | 1998-07-22 | 2000-01-26 | 中国科学院大连化学物理研究所 | Fuel cell set having separated chamber structure |
| US6127058A (en) * | 1998-10-30 | 2000-10-03 | Motorola, Inc. | Planar fuel cell |
| CN1469500A (en) * | 2002-07-17 | 2004-01-21 | 山 黄 | Composite leading and collecting plate for fuel cell and its manufacture |
| CN2580609Y (en) * | 2002-10-24 | 2003-10-15 | 江苏隆源双登电源有限公司 | Plastic bipolar plate of direct methanol fuel cell |
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