CN205355156U - High power density PEMFC pile - Google Patents
High power density PEMFC pile Download PDFInfo
- Publication number
- CN205355156U CN205355156U CN201521048796.4U CN201521048796U CN205355156U CN 205355156 U CN205355156 U CN 205355156U CN 201521048796 U CN201521048796 U CN 201521048796U CN 205355156 U CN205355156 U CN 205355156U
- Authority
- CN
- China
- Prior art keywords
- pile
- sides
- flow field
- power density
- pole plate
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Classifications
-
- 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
Landscapes
- Fuel Cell (AREA)
Abstract
The utility model discloses a high power density PEMFC pile, end plate including both sides is fixed the inboard current collection board of end plate, and repeated a plurality of unit battery that pile up between the current collection board of both sides, every unit battery all includes trinity membrane electrode and distributes the special polar plate of proton exchange membrane fuel cell of trinity membrane electrode both sides, the surface one side of this special use polar plate is dull and stereotyped face, and the another side has gas flow field according to the flow field suppression of design, and wherein, the laminating of dull and stereotyped surface is in on the trinity membrane electrode, the flow field closed -up surface is laminated on conductively connected parts, conductively connected parts is made by metal material or non - metal material. The utility model discloses a pile does not use bipolar plate, has reduced substantially pile weight, has improved the pile than power density, has reduced the manufacturing cost of pile, the efficiency of the equipment of pile is improved for the step of fuel cell industrialization.
Description
Technical field
The invention belongs to fuel cell field, be specifically related to a kind of high power density PEMFC(Proton Exchange Membrane Fuel Cells) pile.
Background technology
Proton Exchange Membrane Fuel Cells is to be the device of electric energy by the chemical energy of hydrogen, and its advantage is product is water, Zero-discharge non-pollution, and noise is low, and transformation efficiency is high.Operating temperature can be run at low ambient temperatures, is portable power source and the first-selection of base station power and fixed power source.Traditional fuel cell, is made up of membrane electrode, bipolar plates, collector plate, end plate and securing member.Owing to polymer-membrane fuel battery monolithic voltage is low, in actual applications, it is be superimposed by multiple battery units to be together in series, forms pile.
Lighting and compact conformation are one of emphasis of fuel cell future development, current fuel cell is due to the reason such as volume, weight, can only be suitable at some particular places, constrain the popularization and application of fuel cell greatly, how to alleviate the weight of fuel cell pile, improve fuel cell volume energy density, by wider for fuel cells applications general, become the major issue being badly in need of solving at present.
Bipolar plates is component the heaviest in fuel cell component, acts primarily as the effect supporting and distributing gas.Traditional bipolar plates is substantially graphite bi-polar plate or metal double polar plates, weight account for pile weight more than half, volume accounts for about the 30%--70% of fuel cell volume, make fuel cell weight and volume bigger than normal, fuel cell range of application and field, require, close to when overcritical, increasingly to restrict the commercialization step of fuel cell in the current bulk density to fuel cell and weight density.Therefore, the problem emphasis of fuel cell pile lighting and densification is just in that the transformation to fuel cell conventional bipolar plate structure.
In fuel cell in the market, the also rarely found bipolar plates direct-assembling pile of not using, even if having, also it is use other device to replace bipolar plates for certain purpose, such as publication number is an application for a patent for invention of CN102422469A, just disclose a kind of pile being not provided with bipolar plates, there is solid polymer dielectric film and clamp a pair catalyst layer of described polymer dielectric film.The layered product of solid polymer dielectric film and catalyst layer is clamped further by a pair gas diffusion layers.Adjacent catalyst layer and gas diffusion layers constitute gas-diffusion electrode.Solid polymer dielectric film and a pair gas-diffusion electrode are further with laminated state constituting membrane electrode assembly (MEA).MEA is clamped by a pair isolating membrane further.This isolating membrane obtains in the following manner: is applied in by punch forming process on the thin plate of below thickness 0.5mm, is shaped to concaveconvex shape.The protuberance of the isolating membrane observed from MEA side contacts with MEA.The recess of the isolating membrane observed from MEA side is used as gas during fuel cell operation and passes through to use gas passage.In the disclosure file, including electrolyte membrane layer, catalyst layer, gas diffusion layers and outermost isolating membrane, although being wherein not provided with bipolar plates, no matter but isolating membrane is from being in shape or functionally all consistent with bipolar plates role, compare bipolar plates and alleviate some weight, but still occupy certain weight and volume, can not tackle the problem at its root.
Summary of the invention
Goal of the invention: based on situation and the market energy density requirement to fuel cell of current fuel battery double plates, the present invention provides the structure of a kind of high power density pemfc stack, alleviate weight and the volume of pile, improve the energy density of pile, widening the application of pile, solid foundation has been established in the commercialization for pile.
Technical scheme: high power density pemfc stack of the present invention, end plate including both sides, it is fixed on the collector plate inside described end plate, and some blade unit batteries that repeatedly stacking is between the collector plate of both sides, it is characterized in that, every described element cell all includes three in one membreane electrode and is distributed in the special pole plate of Proton Exchange Membrane Fuel Cells of described three in one membreane electrode both sides, the surface one side of this special pole plate is platen surface, another side is suppressed with gas flowfield according to the flow field of design, wherein, it is fitted on described three in one membreane electrode after planar surface coating conductive buffer layer, flow field face is fitted tightly on conducting connecting part, described conducting connecting part is made up of metal material or nonmetallic materials, outer surface is provided with conductive coating, conduction electric current, inside has coolant flow field, cooling pile；
The special pole plate of described Proton Exchange Membrane Fuel Cells is prepared from by following component:
Carbon fiber is short fine 40 ~ 60 parts；
Resin 4 ~ 18 parts；
Carbon dust or graphite powder 10 ~ 40 parts；
Pore creating material 0.5 ~ 1.5 part；
Reinforcing agent DH-41.5 ~ 2.5 part,
Each component is with parts by weight.
In the present invention, the special pole plate of Proton Exchange Membrane Fuel Cells not only acts as the effect that three in one membreane electrode reacts that is diffused into by gas, also it is suppressed with flow field on surface, without arranging bipolar plates, gas can be uniformly distributed, gas diffusion layers and bipolar plates in set conventional fuel cell are integrated, and the weight of pile is greatly reduced.And in order to prevent hydrogen from leaking inside pile with oxygen and mixing, between two panels element cell, it is provided with again the conducting connecting part with sealing, cooling and electric conductivity.
The present invention further preferably technical scheme is, the special pole plate of the Proton Exchange Membrane Fuel Cells special pole plate of respectively anode of described three in one membreane electrode both sides and the special pole plate of negative electrode, the flow field degree of depth of the special polar board surface of described anode is 0.3 ~ 1mm, and the flow field degree of depth of the special polar board surface of described negative electrode is 0.5 ~ 2mm.
Further, the planar surface symmetry of the special pole plate of described anode and the special pole plate of negative electrode overlays three in one membreane electrode both sides.
Further, the preparation method of the special pole plate of described Proton Exchange Membrane Fuel Cells is:
(1) batch mixing: by short for carbon fiber fibre and mixed with resin, and after stirring, add carbon dust or graphite powder, pore creating material, reinforcing agent DH-4, continue stirring；
(2) compacting: according to the flow field patterns of design and size, mixture after step (1) process being put into mould inner pressure and makes one side for platen surface, another side has the pole plate of flow field structure, and this electrode thickness is 0.6 ~ 3mm, porosity is 50% ~ 80%, and aperture is 0.1 μm ~ 3 μm；
(3) graphitization: compressing pole plate carries out high temperature graphitization process, graphitization condition is: high temperature 1800---2300 DEG C, nitrogen protection or in vacuum, cools down stand-by after completing；
(4) hydrophobic: the pole plate after graphitization to be put in the PTFE solution of 10% ~ 60% and soak, after draining, calcination hydrophobic treatment at 300 ~ 400 DEG C, cool down after completing, obtain the special pole plate of this Proton Exchange Membrane Fuel Cells.
Preferably, being additionally provided with L-type positioning supporting part between the two end plates of pile both sides, some described element cells are fixedly supported between the end plate of both sides by described L-type positioning supporting part.
Further, described L-type positioning supporting part is 4, is separately fixed on four angles of described end plate.
Preferably, being separated by conducting connecting part between element cell, the two sides surrounding of described conducting connecting part has the sealing gasket matched with element cell, seals for pile.
Preferably, fixed by I shape securing member between the two end plates of pile both sides, the some blade unit batteries between two end plates are overlayed fixing.
The operation principle of the present invention is: owing to the monolithic voltage of fuel cell is relatively low, it is necessary to monolithic battery is overlapped the formation pile that is cascaded.Hydrogen and oxygen are entered pile by respective air inlet respectively, it is uniformly distributed under the effect of special polar plate flow field, and be diffused into the surface of membrane electrode by the hole of special pole plate and carry out corresponding electrochemical reaction, the water produced is diffused in the flow field of correspondence by the hole of special pole plate, discharges through flow field.
Beneficial effect: the pile of (1) present invention does not use bipolar plates, the pole plate using lighting replaces traditional bipolar plates and gas diffusion layers, drastically reduce the area pile weight, improve pile specific power density, compared with traditional pile, the air-cooled pile power density > 2.1kw/L, the pile > 3.2kw/L of water-cooled of present invention composition；Simultaneously because the pile of the present invention does not use bipolar plates, reduce the volume of pile, widen Proton Exchange Membrane Fuel Cells application；Decrease the contact resistance within pile number of fitting parts and pile, improve the performance of pile；Improve the packaging efficiency of pile, accelerate the step of Proton Exchange Membrane Fuel Cells industrialization；
(2) present invention arranges L-type positioning supporting part between the end plate of both sides, reinforcing agent is added in special pole plate, can ensure that special pole plate completes the support of pile, under the premise being not provided with bipolar plates, keep stabilized structure, external support is conducive to alleviating the weight of pile and volume, improves specific volume density and the weight/power ratio density of pile.
Accompanying drawing explanation
Fig. 1 is the internal structure schematic diagram of high power density pemfc stack of the present invention；
Fig. 2 is the outline drawing of high power density pemfc stack of the present invention.
Wherein: 1-end plate, 2-collector plate, 3-membrane electrode, the special pole plate of 4-anode, the special pole plate of 5-negative electrode, 6-conductive buffer layer, 7-conducting connecting part, 8-L type positioning supporting part, 9-I shape securing member, 41-anode gas flow field, 51-cathode gas flow fields.
Detailed description of the invention
Below by accompanying drawing, technical solution of the present invention is described in detail, but protection scope of the present invention is not limited to described embodiment.
Embodiment 1: a kind of high power density pemfc stack, end plate 1 including both sides, it is fixed on the collector plate 2 inside end plate 1, and some blade unit batteries that repeatedly stacking is between both sides collector plate 2, every blade unit battery includes three in one membreane electrode 3 and is respectively distributed to the special pole plate of anode 4 and the special pole plate 5 of negative electrode of membrane electrode both sides；
The thickness of the special pole plate 4 of anode is 0.6 ~ 3mm, and porosity is 50 ~ 80%, and aperture is 0.1 ~ 3 μm, its surface one side is platen surface, it is 10 ~ 700 μm of conductive buffer layers 6 that surface is coated with thickness, and another side is suppressed with anode gas flow field 41 according to the flow field of design, and the flow field degree of depth is 0.3 ~ 1mm.
Preferably, the thickness of the special pole plate 4 of anode is 1.2mm, and porosity is 70%, and aperture is 1.5 μm, and the degree of depth of anode gas flow field 41 is 0.6mm, and the flow field that anode gas flow field 41 is formed is serpentine flow.
The thickness of the special pole plate 5 of negative electrode is 0.6 ~ 3mm, and porosity is 50 ~ 80%, and aperture is 0.1 ~ 3 μm, its surface one side is platen surface, it is 10 ~ 700 μm of conductive buffer layers 6 that surface is coated with thickness, and another side is suppressed with cathode gas flow fields 51 according to the flow field of design, and the flow field degree of depth is 0.5 ~ 2mm.
Preferably, the thickness of the special pole plate 5 of negative electrode is 1.2mm, and porosity is 65%, and aperture is 2 μm, and the degree of depth that conductie buffer layer thickness is 100 μm of cathode gas flow fields 51 of its planar surface is 1mm, and the flow field that cathode gas flow fields 51 is formed is serpentine flow.
The planar surface of the special pole plate 4 of anode is fitted on three in one membreane electrode 3, the flow field face of the special pole plate 4 of anode of outermost a piece of element cell is fitted on the collector plate 2 of side by conducting connecting part 7, and the flow field face of the special pole plate of anode 4 of remaining element battery is fitted on the special pole plate 5 of negative electrode of another blade unit battery by conducting connecting part 7.
The planar surface of the special pole plate 5 of negative electrode is fitted on three in one membreane electrode 3, the flow field face of the special pole plate 5 of negative electrode of outermost a piece of element cell is fitted on the collector plate 2 of opposite side by conducting connecting part 7, and the flow field face of the special pole plate of negative electrode 4 of remaining element battery is fitted on the special pole plate 5 of anode of another blade unit battery by conducting connecting part 7.
Conducting connecting part 7 metal material or nonmetallic materials are made, and outer surface is provided with conductive coating, conduct electric current, and inside has coolant flow field, cool down pile.
Being additionally provided with four L-type positioning supporting parts 8 between the end plate 1 of both sides, be separately fixed on four angles of end plate 1, some blade unit batteries are fixedly supported between both sides end plate 1 by L-type positioning supporting part 8；Fixed by I shape securing member 9 between two end plates 1 simultaneously, the some blade unit batteries between two end plates 1 are overlayed fixing.
The special pole plate of Proton Exchange Membrane Fuel Cells includes following component in the present embodiment:
Carbon fiber is short fine 40 ~ 60 parts；
Resin 4 ~ 18 parts；
Carbon dust or graphite powder 10 ~ 40 parts；
Pore creating material 0.5 ~ 1.5 part；
Reinforcing agent DH-41.5 ~ 2.5 part,
Each component is with parts by weight.
Preferably, the short fibre of carbon fiber is 49 parts；Resin is 10 parts；Carbon dust is 38 parts；Pore creating material is 1 part；Reinforcing agent DH-4 is 2 parts.
The concrete preparation method of the special pole plate of this Proton Exchange Membrane Fuel Cells is:
(1) batch mixing: by short for carbon fiber fibre and mixed with resin, and after stirring, add carbon dust or graphite powder, pore creating material, reinforcing agent DH-4, continue stirring；
(2) compacting: according to the flow field patterns of design and size, after step (1) being processed, mixture is put into mould inner pressure and is made one side for flat board, and another side has the pole plate of flow field structure, and this electrode thickness is 0.6 ~ 3mm, porosity is 50% ~ 80%, and aperture is 0.1 μm ~ 3 μm；
(3) graphitization: compressing pole plate carries out high temperature graphitization process, graphitization condition is: high temperature 1800 ~ 2300 DEG C, nitrogen protection or in vacuum, cools down stand-by after completing；
(4) hydrophobic: the pole plate after graphitization to be put in the PTFE solution of 10% ~ 60% and soak, after draining, calcination hydrophobic treatment at 300 ~ 400 DEG C, cool down after completing, obtain this special pole plate.
Although as it has been described above, represented and described the present invention with reference to specific preferred embodiment, but it shall not be construed as the restriction to the present invention self.Under the spirit and scope of the present invention premise defined without departing from claims, it can be made in the form and details various change.
Claims (7)
1. a high power density pemfc stack, end plate including both sides, it is fixed on the collector plate inside described end plate, and some blade unit batteries that repeatedly stacking is between the collector plate of both sides, it is characterized in that, every described element cell all includes three in one membreane electrode and is distributed in the special pole plate of Proton Exchange Membrane Fuel Cells of described three in one membreane electrode both sides, the surface one side of this special pole plate is platen surface, another side is suppressed with gas flowfield according to the flow field of design, wherein, it is fitted on described three in one membreane electrode after planar surface coating conductive buffer layer, flow field face is fitted tightly on conducting connecting part, described conducting connecting part is made up of metal material or nonmetallic materials, outer surface is provided with conductive coating, conduction electric current, inside has coolant flow field, cooling pile.
2. high power density pemfc stack according to claim 1, it is characterized in that, the special pole plate of the Proton Exchange Membrane Fuel Cells special pole plate of respectively anode of described three in one membreane electrode both sides and the special pole plate of negative electrode, the flow field degree of depth of the special polar board surface of described anode is 0.3 ~ 1mm, and the flow field degree of depth of the special polar board surface of described negative electrode is 0.5 ~ 2mm.
3. high power density pemfc stack according to claim 2, it is characterised in that the planar surface symmetry of the special pole plate of described anode and the special pole plate of negative electrode overlays three in one membreane electrode both sides.
4. high power density pemfc stack according to claim 1, it is characterised in that being additionally provided with L-type positioning supporting part between the two end plates of pile both sides, some described element cells are fixedly supported between the end plate of both sides by described L-type positioning supporting part.
5. high power density pemfc stack according to claim 4, it is characterised in that described L-type positioning supporting part is 4, is separately fixed on four angles of described end plate.
6. high power density pemfc stack according to claim 1, it is characterised in that separated by conducting connecting part between element cell, the two sides surrounding of described conducting connecting part has the sealing gasket matched with element cell, seals for pile.
7. the some blade unit batteries between two end plates are overlayed fixing by the high power density pemfc stack according to claim 1 ~ 6 any one, it is characterised in that fixed by I shape securing member between the two end plates of pile both sides.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521048796.4U CN205355156U (en) | 2015-12-15 | 2015-12-15 | High power density PEMFC pile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521048796.4U CN205355156U (en) | 2015-12-15 | 2015-12-15 | High power density PEMFC pile |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205355156U true CN205355156U (en) | 2016-06-29 |
Family
ID=56169161
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201521048796.4U Active CN205355156U (en) | 2015-12-15 | 2015-12-15 | High power density PEMFC pile |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205355156U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108470930A (en) * | 2018-03-15 | 2018-08-31 | 杜克兰 | A kind of iron-chromium liquid stream battery stack |
-
2015
- 2015-12-15 CN CN201521048796.4U patent/CN205355156U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108470930A (en) * | 2018-03-15 | 2018-08-31 | 杜克兰 | A kind of iron-chromium liquid stream battery stack |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104795574B (en) | Metal double polar plates, the fuel cell of fuel cell | |
| CN100495788C (en) | Self-respiration type fuel battery membrane electrode and method for producing the same | |
| KR101620155B1 (en) | Fuel cell and manufacturing method thereof | |
| CN105529478B (en) | A kind of pile of fuel battery double plates and its composition | |
| Baroutaji et al. | Design and development of proton exchange membrane fuel cell using open pore cellular foam as flow plate material | |
| CN102324533A (en) | Self-breathing direct methanol fuel cell monomer based on porous metal fiberboard | |
| CN108346810A (en) | Fuel cell micro sealing part and its manufacturing method | |
| CN111063925A (en) | Catalyst coated membrane, fuel cell and method of making | |
| CN105576255A (en) | Manufacturing method of special pole plate for high-power and high-density PEMFC (Proton Exchange Membrane Fuel Cell) galvanic pile | |
| CN108878930A (en) | A kind of electrolysis optimization method of membrane electrode catalytic layer microstructure | |
| CN103165904B (en) | Integrated regenerative fuel cell membrane electrode assembly and preparation method thereof | |
| CN105470527B (en) | Cathode plate for air-cooled proton exchange membrane fuel cell | |
| CN105428671B (en) | A kind of high power density pemfc stack | |
| CN205355156U (en) | High power density PEMFC pile | |
| CN100356618C (en) | High-efficient fuel battery guide bipolar plates and producing method thereof | |
| CN201051520Y (en) | A fuel cell membrane electrode | |
| CN105428672B (en) | A kind of embedded encapsulating method of the special pole plate of high power density pemfc stack | |
| CN105428670B (en) | A kind of special pole plate of high power density pemfc stack and preparation method thereof | |
| CN101409356A (en) | Self-respiration minitype direct methanol fuel battery set and preparation method thereof | |
| CN208986100U (en) | A kind of hydrogen fuel cell pem cell cellular construction | |
| CN105449239B (en) | A kind of externally embedded type encapsulating method of the special pole plate of high power density pemfc stack | |
| CN205355158U (en) | High power density PEMFC sealing connection spare for pile | |
| WO2023097587A1 (en) | Method for preparing bipolar plate for electrochemical fuel cell | |
| CN203659991U (en) | Novel fuel cell pile end plate | |
| CN102420335B (en) | Assembling method of self-breathing type direct alcohol fuel cell |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP03 | Change of name, title or address |
Address after: Suzhou City, Jiangsu Province, Yushan Town, Kunshan City, 215313 Yu Yang Road No. 299, room 3 Patentee after: Jiangsu hydrogen power new energy Co., Ltd. Address before: 215313, Jiangsu, Kunshan City, Yushan Town, Yu Yang Road, No. 299, Ping An International Industrial Park A building, Patentee before: Jiangsu Lv Yao fuel cell system Manufacturing Co., Ltd |