CN201051524Y - An air direct cooling fuel battery suitable for low temperature start - Google Patents
An air direct cooling fuel battery suitable for low temperature start Download PDFInfo
- Publication number
- CN201051524Y CN201051524Y CNU2007200695275U CN200720069527U CN201051524Y CN 201051524 Y CN201051524 Y CN 201051524Y CN U2007200695275 U CNU2007200695275 U CN U2007200695275U CN 200720069527 U CN200720069527 U CN 200720069527U CN 201051524 Y CN201051524 Y CN 201051524Y
- Authority
- CN
- China
- Prior art keywords
- flow field
- fuel cell
- air
- plate
- direct cooling
- 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.)
- Expired - Lifetime
Links
Images
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
Abstract
The utility model relates to an air direct cooling type fuel battery applicable for cold-starting, comprising a membrane electrode, a double-pole plate, a flow collecting lead wire plate and an end plate. The double-pole plate is a compound double-pole plate, a flow passage of the double-pole plate is a flat straight run-through type flow passage, the compound double-pole plate and the membrane electrode are adhered to form an integrated single battery, a fluid sealant layer is arranged around an end face formed through superimposing a plurality of integrated single batteries, an end cover with a cavity body is arranged outside the end face, and a plurality of end faces and the end cover are connected to form an air common fluid cavity of the fuel battery. Compared with the prior art, the air direct cooling type fuel battery of the utility model has the characteristics of simple structure, lower cost, special applicability for the fuel battery to cold-start under low-temperature, and the like.
Description
Technical field
The utility model relates to a kind of fuel cell, relates in particular to a kind of direct cooling type fuel cell of air of suitable cold-starting.
Background technology
Fuel cell low-temperature cool starting and low temperature operation down are the relatively problems in forward position of international the next item up, because the fuel cell cold starting performance directly influences the degree of being practical of fuel cell, influence its scope of application.
For the conventional fuel battery generating system, fuel cell operation needs the water humidification, and the cooling of fuel cell pack all needs water cooling.Thereby be lower than in temperature under the situation of zero degree, it is very difficult that the low-temperature cool starting of fuel cell becomes.If the water management of fuel cell is bad, under being lower than zero degree, temperature starts, and tend to cause battery system normally not start.Under the zero degree, easily freeze in the battery system, can cause nonvolatil infringement to system under the situation about having.
Proposed a kind of battery system in the United States Patent (USP) 6699612, the heat of the anti-icing fluid glycol-cooled fuel cell generation of a circulation has been arranged in this system.Freezing liquid also mixes with fuel gas in heat exchanger simultaneously, removes the moisture in the fuel.Also have water removal body in the system in time to remove the water in the freezing liquid, be used for guaranteeing the concentration of freezing liquid.Be not difficult to find out that this system is very complicated.
Proposed a kind of method that keeps fuel battery temperature in the United States Patent (USP) 6727013, this method mainly is to utilize the temperature maintenance of fuel cell system when holding state, and this method is that the outer heating of utilization system heats to fuel cell pack.The main ohmic load that adopts heats, and by fan hot blast is blown to above the fuel cell pack then.As can be seen, in order to guarantee the temperature of fuel cell pack, continuous consumed energy in the system.
Having proposed a kind of scheme in the United States Patent (USP) 6746789, mainly is to utilize external catalytic reactor, at low temperatures, the direct cold burning of hydrogen and air is produced air cathode or the anode that heat and moisture offer fuel cell then.Fuel cell system adopts air to do oxidant and cooling agent, thereby can simplify battery system, and improves the low-temperature startup of fuel cell, but also more complicated of system.
A kind of method that solves the problem of two end cells existence in the fuel cell pack has been proposed in the United States Patent (USP) 7014935.In the battery operation process, especially in the cold-starting running, two end cells in the fuel cell pack are because the uneven problem of hydro-thermal appears in the influence of factors such as hydro-thermal easily.Propose in the patent battery at two ends is handled, improve the corrosion resistance of battery, thereby improve the low temperature operability of battery pile.
A kind of fuel cell pack specific fuel lead plate and end plate have been mentioned in the United States Patent (USP) 6764786.Point out in the patent that the end plate of fuel cell pack usually is thick metallic plate, relatively heaviness and relatively costliness, and high thermal capacitance and easy dissipated heat are arranged.It is lower or when cold-starting that fuel cell piles up operating temperature, the heat radiation of the battery at end plate place easily, poor-performing influence the cold-starting speed of fuel cell, and low temperature easy back-pressure during startup down, causes permanent damage.Proposed a kind of high strength, low heat capacity low heat emission end plate in the patent, part has solved the problem that is produced when fuel cell piles up cold-starting and cold operation.
Proposed in the United States Patent (USP) 6824901 between the end cell of fuel cell pack and end plate, to add that the method for porous thermal insulation plate solves the problem that the quick cold start-up of fuel cell low temperature is brought.The thermal insulation panel of mentioning in the patent is the porous graphite plate, and voidage is 50-75%.But adopt porous graphite plate effect of heat insulation limited after all, just part has intercepted the heat transfer of end cell to end plate, thereby this method has just partly solved the started quickly at low temperature of fuel cell system.
In sum, fuel cell cold-starting subject matter is ice formation issues as can be seen.Settling mode mainly contains: use freeze proof medium instead; Outer heating; Adopt to purge to wait the water in the system is blown out, the end cell in the battery pile is carried out special processing or improves the modes such as hydro-thermal balance that entire cell is piled.But these methods usually need be by external assisted heating device, complex process, and also effect is unsatisfactory.
Summary of the invention
The purpose of this utility model is exactly to provide a kind of technology simple for the defective that has overcome above-mentioned prior art existence, the direct cooling type fuel cell of the air of lower-cost suitable cold-starting.
The purpose of this utility model can be achieved through the following technical solutions: the direct cooling type fuel cell of a kind of air of suitable cold-starting, this fuel cell comprises membrane electrode, bipolar plates, the afflux lead plate, end plate, it is characterized in that: described bipolar plates is a combined dual-polar plate, its runner is straight through runner, combined dual-polar plate and being bonded into one of membrane electrode monocell, be provided with sealant layer around the end face that the integrated monocell of polylith is superimposed as, end face is provided with the end cap of attached cavity outward, and the polylith end face links to each other with end cap and constitutes the gas common fluid chamber of battery fuel.
Described combined dual-polar plate comprises that one side has the flexible graphite plate in hydrogen fuel flow field and metal or the graphite material plate that one side has air flow field, one panel two ends are provided with the sealing lath and link to each other with another panel, the runner in described hydrogen fuel flow field is the straight channel of many perforations, and the runner of air flow field is the parallel fluid channels of many perforations; The runner in hydrogen fuel flow field becomes vertical stratification with the runner of air flow field on direction.
Described integrated monocell is a rectangle, described combined dual-polar plate is a rectangle, described membrane electrode is a rectangle, the long edge lengths of the carbon paper of the hydrogen flow field side of this membrane electrode is than the long 2mm-10mm of air flow field side carbon paper, the carbon paper bond length of hydrogen flow field side is than the short 2-10mm of air flow field side carbon paper, two long limit exposed parts of described membrane electrode directly or indirectly link to each other with the hydrogen flow field side bonds of bipolar plates, and two minor face exposed parts of membrane electrode are provided with elaxtic seal and link to each other with the air flow field side of bipolar plates.
The chamber that described gas common fluid chamber surrounds for the end face that is superimposed as by the integrated monocell minor face of multi-disc rectangle and end cap, this end cap is provided with fuel gas and imports and exports, and is provided with around the described gas common fluid chamber to seal to use elastomeric material.
The cap material in described end plate and gas common fluid chamber is the low thermal conductivity material that conductive coefficient is lower than 1W/mK.
Contact resistance between described afflux lead plate and the combined dual-polar plate is 30-300 milliohm/square centimeter.
Compared with prior art, the utility model provides a kind of air of suitable cold-starting direct cooling type fuel cell, be directly to join fuel hydrogen and air in the fuel cell system, battery moves under lower voltage, the rapid heating fuel battery pile of heat that battery itself is produced, the low-temperature cool starting of realization fuel cell pack needn't be by external assisted heating device, simple in structure, especially be fit to fuel cell characteristics such as cold start-up at low temperatures.
Description of drawings
Fig. 1 is the structural representation of the utility model combined dual-polar plate;
Fig. 2 is the structural representation of the utility model membrane electrode;
Fig. 3 is the structural representation of the integrated monocell of the utility model;
Fig. 4 is the structural representation of the utility model end face;
Fig. 5 is the structural representation of the utility model fuel cell pack.
Embodiment
Below in conjunction with specific embodiment, the utility model is described in further detail.
Embodiment
As shown in Figure 1, the one side of fuel cell combined dual-polar plate is a slice flexible graphite plate 2, this flexible graphite plate 2 is fitted to link to each other with hard graphite cake 1 and is constituted combined dual-polar plate, flow field on flexible graphite plate 2 and the hard graphite cake 1 lays respectively at two lateral surfaces of combined dual-polar plate, wherein the flow field on the flexible graphite plate 2 21 is the hydrogen flow field that many perforation chutes are formed, and many parallel perforation chutes are formed air cooling flow field 11 on the hard graphite cake 1.Sealing lath 4 is sealed on the dual-side of flexible graphite plate and links to each other with the hard graphite cake.
As shown in Figure 2, the structural representation of wherein a kind of membrane electrode MEA, wherein 51 (point-like black parts) are the anode electrode of battery (can comprise catalyst and diffusion layer), 4 (the rectangular parts of black entity) are the sealing joint strip of battery, 3 is proton exchange membrane, 52 are the negative electrode of battery (can comprise catalyst and diffusion layer), under the usual condition, it is closely to paste and be in the same place that the negative electrode of battery and film also have anode, wherein the anode minor face is than the short 4mm of film, wherein the long limit of negative electrode is than the short 4mm of film, sealing joint strip generally is that trickling shape silica gel in-situ solidifying forms, its edge that carbon paper diffusion layer need be sealed seals and covers the surface of film, and its seal thickness is identical with carbon paper thickness.51,4,3,52 combine has just constituted an anode and cathode marginal portion sealing MEA assembly.
As shown in Figure 3, be the integrated monocell after the combination, the part of the monocell of each digitized representation is at Fig. 1 among Fig. 3, explanation is arranged among Fig. 2, this mainly is that the MEA assembly of Fig. 2 combined dual-polar plate with Fig. 1 is bonded together, stick portion be 4 parts among sealing joint strip Fig. 1 of battery with 4 parts of Fig. 2 anode-side, the low denseness silica gel adhering and solidifying of bonding normal employing forms.
As shown in Figure 4, the above-mentioned integrated monocell of multi-disc is stacked, just constituted an end face 6 at the minor face of monocell.Promptly the end face that the integrated monocell of multi-disc stacks formation in the elliptic region among Fig. 4.Be coated with fluid sealant around this rectangle end face, the end cover for battery cells of battery attached cavity is covered the fuel gas common fluid chamber that has just constituted sealing on end face, the cap material in this gas common fluid chamber is the low thermal conductivity material that conductive coefficient is lower than 1W/mK.
As shown in Figure 5, the end cover for battery cells 10 of carrying fuel air admission hole 7 is used for pilot fuel gas and sealed fuel gas, and end cover for battery cells 10 and cell end plate 8 are lower than the nonmetallic materials of 1W/mK for conductive coefficient, described end plate and, be used to step up fuel cell pack.The current feed plate 9 of fuel cell, with the contact resistance between the graphite bi-polar plate between 30-300 milliohm/square centimeter.
Claims (6)
1. the direct cooling type fuel cell of the air of a suitable cold-starting, this fuel cell comprises membrane electrode, bipolar plates, afflux lead plate, end plate, it is characterized in that: described bipolar plates is a combined dual-polar plate, its runner is straight through runner, combined dual-polar plate and being bonded into one of membrane electrode monocell, be provided with sealant layer around the end face that the integrated monocell of polylith is superimposed as, end face is provided with the end cap of attached cavity outward, and the polylith end face links to each other with end cap and constitutes the gas common fluid chamber of battery fuel.
2. the direct cooling type fuel cell of the air of a kind of suitable cold-starting according to claim 1, it is characterized in that, described combined dual-polar plate comprises that one side has the flexible graphite plate in hydrogen fuel flow field and metal or the graphite material plate that one side has air flow field, one panel two ends are provided with the sealing lath and link to each other with another panel, the runner in described hydrogen fuel flow field is the straight channel of many perforations, and the runner of air flow field is the parallel fluid channels of many perforations; The runner in hydrogen fuel flow field becomes vertical stratification with the runner of air flow field on direction.
3. the direct cooling type fuel cell of the air of a kind of suitable cold-starting according to claim 1, it is characterized in that, described integrated monocell is a rectangle, described combined dual-polar plate is a rectangle, described membrane electrode is a rectangle, the long edge lengths of the carbon paper of the hydrogen flow field side of this membrane electrode is than the long 2mm-10mm of air flow field side carbon paper, the carbon paper bond length of hydrogen flow field side is than the short 2-10mm of air flow field side carbon paper, two long limit exposed parts of described membrane electrode directly or indirectly link to each other with the hydrogen flow field side bonds of bipolar plates, and two minor face exposed parts of membrane electrode are provided with elaxtic seal and link to each other with the air flow field side of bipolar plates.
4. the direct cooling type fuel cell of the air of a kind of suitable cold-starting according to claim 1, it is characterized in that, the chamber that described gas common fluid chamber surrounds for the end face that is superimposed as by the integrated monocell minor face of multi-disc rectangle and end cap, this end cap is provided with fuel gas and imports and exports, and is provided with the sealing elastomeric material around the described gas common fluid chamber.
5. according to the direct cooling type fuel cell of the air of claim 1 or 4 described a kind of suitable cold-startings, it is characterized in that the cap material in described end plate and gas common fluid chamber is the low thermal conductivity material that conductive coefficient is lower than 1W/mK.
6. the direct cooling type fuel cell of the air of a kind of suitable cold-starting according to claim 1 is characterized in that, contact resistance is 30-300 milliohm/square centimeter between described afflux lead plate and the combined dual-polar plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200695275U CN201051524Y (en) | 2007-04-29 | 2007-04-29 | An air direct cooling fuel battery suitable for low temperature start |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200695275U CN201051524Y (en) | 2007-04-29 | 2007-04-29 | An air direct cooling fuel battery suitable for low temperature start |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201051524Y true CN201051524Y (en) | 2008-04-23 |
Family
ID=39338017
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200695275U Expired - Lifetime CN201051524Y (en) | 2007-04-29 | 2007-04-29 | An air direct cooling fuel battery suitable for low temperature start |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201051524Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101796677B (en) * | 2007-07-18 | 2013-12-18 | 塞尔能源公司 | Improvements in gaskets and bipolar plates for PEM fuel cells |
| CN106711475A (en) * | 2016-11-17 | 2017-05-24 | 上海攀业氢能源科技有限公司 | Single cell of metal plate fuel cell and preparation method of single cell |
-
2007
- 2007-04-29 CN CNU2007200695275U patent/CN201051524Y/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101796677B (en) * | 2007-07-18 | 2013-12-18 | 塞尔能源公司 | Improvements in gaskets and bipolar plates for PEM fuel cells |
| CN106711475A (en) * | 2016-11-17 | 2017-05-24 | 上海攀业氢能源科技有限公司 | Single cell of metal plate fuel cell and preparation method of single cell |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CA2371257A1 (en) | Freeze tolerant fuel cell system and method | |
| US8722271B2 (en) | Flow field plate with relief ducts for fuel cell stack | |
| CN103219535A (en) | Method for controlling cold starting of proton exchange membrane fuel battery stack | |
| CN101335357A (en) | Low electrical resistance bipolar plate-diffusion media assembly | |
| WO2011120426A1 (en) | Bipolar plate for fuel cell | |
| CN203218380U (en) | Device for cold start of proton exchange membrane fuel cell | |
| CN212848508U (en) | Proton exchange membrane fuel cell stack | |
| CN201051524Y (en) | An air direct cooling fuel battery suitable for low temperature start | |
| US20090169969A1 (en) | Bipolar plate of solid oxide fuel cell | |
| US10686198B2 (en) | Fuel cell assembly | |
| CN210866383U (en) | Fuel cell | |
| US8778550B2 (en) | Battery of fuel cells | |
| CN206789622U (en) | A kind of flow battery or fuel cell used metal electrode plate | |
| CN211980785U (en) | Optimized proton exchange membrane electrode device | |
| JP2003123801A (en) | Polymer electrolyte stacked fuel cell | |
| JP2002343377A (en) | Electrolyte film-electrode joined body for fuel cell, and manufacturing method of the same | |
| US8501363B2 (en) | Bipolar plate design with improved freeze start-up | |
| CN113571724A (en) | Graphite bipolar plate | |
| CN109449456A (en) | Bipolar plates, Proton Exchange Membrane Fuel Cells and dual-electrode plates preparation method | |
| CN101557003B (en) | Method to maximize fuel cell voltage during start-up | |
| KR102119912B1 (en) | Fuel cell having condensate water eliminating part and method for manufacturing the same | |
| JP2005353561A (en) | Fuel cell | |
| CN101141000A (en) | Structure of gasket for separator of fuel cell | |
| JP3276649B2 (en) | Fuel cell | |
| JPH09120833A (en) | Solid high polymer electrolyte fuel cell |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20080423 |