CN2911972Y - Composite fuel cell bipolar board - Google Patents
Composite fuel cell bipolar board Download PDFInfo
- Publication number
- CN2911972Y CN2911972Y CNU2006200426749U CN200620042674U CN2911972Y CN 2911972 Y CN2911972 Y CN 2911972Y CN U2006200426749 U CNU2006200426749 U CN U2006200426749U CN 200620042674 U CN200620042674 U CN 200620042674U CN 2911972 Y CN2911972 Y CN 2911972Y
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- CN
- China
- Prior art keywords
- plate
- flow field
- flexible graphite
- hard
- fuel cell
- 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
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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
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Abstract
The utility model provides a bipolar plate for mixed fuel cells, comprising a hard graphite plate, at least one flexible graphite plat and seal strips, wherein a flow field is arranged on one side of each hard graphite plate and flexible graphite plate, a hard graphite and a flexible graphite plate are jointed to form a mixed bipolar plate, the seal strips are covered on the edges of flexible graphite plates and connected with hard graphite plates. Since the utility model is provided with a mixed structure of hard and flexible graphite plates, the utility model has the advantages that: the flexible graphite plate is good on electric conductivity and thermal conductivity, while the hard graphite plate can have more deep air cooling sluice. The utility model is suitable for using as bipolar plate of air cooling mixed fuel cells particularly.
Description
Technical field
The utility model relates to a kind of fuel cell, relates in particular to a kind of composite type fuel cell bipolar plate.
Background technology
Fuel battery double plates is an important component part in the fuel cell pack, and the quality of bipolar plates has directly influenced the power generation performance of fuel cell.And the cost of fuel battery double plates has directly influenced the practical level of fuel cell.
The hard graphite cake has high conductivity and corrosion resistance because of it, still is widely used as the plate material of fuel cell.Flow field on the hard graphite cake generally adopts the mode of groove milling on graphite cake to carry out, thereby preparation cost is than higher.
Flexible graphite plate is got through simple processed by natural flake graphite, and its raw material source is very extensive.In addition, the preparation fuel battery flow field can be undertaken by modes such as mold pressing, roll extrusion on flexible graphite plate, processes very convenient, with low cost.Flexible graphite plate has extraordinary plane conduction and thermal conduction characteristic, thereby is used in the heat conduction uniformity that can improve on the fuel cell on the whole plane of battery.Flexible graphite plate will extensively be used on the fuel cell because of its special advantages, as cell bipolar plate.
The air-cooling type fuel cell bipolar plates is different from liquid cools type fuel battery double plates, and its general feature and requirement be, the cooling launder of bipolar plates is deep, and fuel battery pole board plane heat transfer ratio is better.
If all adopt the hard graphite cake, its flow field processing is more time-consuming, and its plane heat conduction is bad, can not well satisfy the requirement of air-cooling type fuel cell bipolar plates, if all adopt the mold pressing flexible graphite plate, deep because of its air cooling chute, there is the mold pressing difficulty.
Summary of the invention
The purpose of this utility model is to solve the problems referred to above that prior art exists, and a kind of composite type fuel cell bipolar plate is provided.
The purpose of this utility model is achieved in that a kind of composite type fuel cell bipolar plate, comprise a slice hard graphite cake, at least a slice flexible graphite plate and the sealing lath, be respectively equipped with the flow field on the face of each hard graphite cake and flexible graphite plate, flexible graphite plate is fitted to link to each other with the hard graphite cake and is formed composite dual-electrode plates, and the sealing lath is sealed on the edge of flexible graphite plate and links to each other with the hard graphite cake.
Described flexible graphite plate is a slice, this flexible graphite plate is fitted to link to each other with the hard graphite cake and is formed composite dual-electrode plates, flow field on flexible graphite plate and the hard graphite cake lays respectively at two lateral surfaces of composite dual-electrode plates, wherein the flow field on the flexible graphite plate is the hydrogen reaction flow field, and the flow field on the hard graphite cake is the air cooling flow field of holding concurrently, oxygen reaction flow field.
Described flexible graphite plate is two, two flexible graphite plates are fitted in the two sides formation composite dual-electrode plates of hard graphite cake respectively, flow field on two flexible graphite plates lays respectively at two lateral surfaces of composite dual-electrode plates, one of them is the hydrogen reaction flow field, another is the oxygen reaction flow field, and the flow field on the hard graphite cake is sandwiched in middle and becomes the air cooling flow field.
Described flexible graphite plate can be the flexible graphite plate that is added with resin.
In the described hard graphite cake ventilative micropore can be arranged.
In the described flexible graphite plate ventilative micropore can be arranged.
The utility model composite type fuel cell bipolar plate is because the composite construction that adopted flexible graphite plate and hard graphite cake to combine, thereby has the advantage that flexible graphite plate conduction and the extraordinary advantage of thermal conductivity and hard graphite cake can be processed darker air cooling chute concurrently.Be particularly suitable for as the air-cooling type fuel cell bipolar plates.
Description of drawings
Fig. 1 is the structural representation of an embodiment of the utility model composite type fuel cell bipolar plate (intercepting be a representational wherein part in the bipolar plates).
Fig. 2 is the structural representation of another embodiment of the utility model composite type fuel cell bipolar plate (intercepting be a representational wherein part in the bipolar plates).
Embodiment
Cooperation is referring to Fig. 1, Fig. 2, and composite type fuel cell bipolar plate of the present utility model comprises a slice hard graphite cake 1, a slice flexible graphite plate 2 (Fig. 1) or two flexible graphite plates 2,3 (Fig. 2) and sealing lath 4.Be provided with flow field 11 on a face of hard graphite cake 1, this flow field 11 can be used as hold concurrently air cooling flow field or merely as the air cooling flow field, oxygen reaction flow field according to the position difference of hard graphite cake 1 in bipolar plates.A face of flexible graphite plate 2 (or 3) is provided with flow field 21 (or 31), and flexible graphite plate is fitted to link to each other with the hard graphite cake and formed composite dual-electrode plates, and sealing lath 4 is sealed on the edge of flexible graphite plate and links to each other with the hard graphite cake.
Referring to Fig. 1, flexible graphite plate in the utility model composite type fuel cell bipolar plate can be 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 formed composite dual-electrode plates, flow field on flexible graphite plate 2 and the hard graphite cake 1 lays respectively at two lateral surfaces of composite dual-electrode plates, wherein the flow field on the flexible graphite plate 2 21 is the hydrogen reaction flow field, and the flow field 11 on the hard graphite cake 1 is the air cooling flow field of holding concurrently, oxygen reaction flow field.
Referring to Fig. 2, flexible graphite plate in the utility model composite type fuel cell bipolar plate can be two flexible graphite plates 2,3, two flexible graphite plates 2,3 are fitted in the two sides formation composite dual-electrode plates of hard graphite cake 1 respectively, flow field 21,31 on two flexible graphite plates lays respectively at two lateral surfaces of composite dual-electrode plates, one of them flow field (for example 21) is the hydrogen reaction flow field, another flow field (for example 31) is the oxygen reaction flow field, in the middle of the flow field 11 on the hard graphite cake 1 is sandwiched in and become the air cooling flow field.
Flexible graphite plate in the utility model composite type fuel cell bipolar plate can be the flexible graphite plate that is added with the flexible graphite plate of resin or does not add resin.Gas flowfield wherein can be to make by the direct compression molding of expanded graphite powder of adding resin, also can be that the commercially available direct compression molding of high-carbon flexible graphite plate of not adding resin makes.Flexible graphite plate can be that what to breathe freely is the flexible graphite plate that ventilative micropore is arranged in the plate, also can be air-locked flexible graphite plate.
Hard graphite cake in the utility model composite type fuel cell bipolar plate can be the airtight graphite cake that impregnation was handled, and also can be ventilative (ventilative micropore is promptly arranged in the hard graphite cake) hard graphite cake of handling without impregnation.
Sealing lath in the utility model composite type fuel cell bipolar plate, can by the rubber-like rubber type of material or not the rubber-like plastic materials make, its formation method generally be have low trickling degree glue and or the resin in-situ solidifying form.
Claims (6)
1, a kind of composite type fuel cell bipolar plate, it is characterized in that: comprise a slice hard graphite cake, at least a slice flexible graphite plate and the sealing lath, be respectively equipped with the flow field on the face of each hard graphite cake and flexible graphite plate, flexible graphite plate is fitted to link to each other with the hard graphite cake and is formed composite dual-electrode plates, and the sealing lath is sealed on the edge of flexible graphite plate and links to each other with the hard graphite cake.
2, composite type fuel cell bipolar plate as claimed in claim 1, it is characterized in that: described flexible graphite plate is a slice, this flexible graphite plate is fitted to link to each other with the hard graphite cake and is formed composite dual-electrode plates, flow field on flexible graphite plate and the hard graphite cake lays respectively at two lateral surfaces of composite dual-electrode plates, wherein the flow field on the flexible graphite plate is the hydrogen reaction flow field, and the flow field on the hard graphite cake is the air cooling flow field of holding concurrently, oxygen reaction flow field.
3, composite type fuel cell bipolar plate as claimed in claim 1, it is characterized in that: described flexible graphite plate is two, two flexible graphite plates are fitted in the two sides formation composite dual-electrode plates of hard graphite cake respectively, flow field on two flexible graphite plates lays respectively at two lateral surfaces of composite dual-electrode plates, one of them is the hydrogen reaction flow field, another is the oxygen reaction flow field, and the flow field on the hard graphite cake is sandwiched in middle and becomes the air cooling flow field.
4, composite type fuel cell bipolar plate as claimed in claim 1 is characterized in that: described flexible graphite plate can be the flexible graphite plate that is added with resin.
5, composite type fuel cell bipolar plate as claimed in claim 1 is characterized in that: in the described hard graphite cake ventilative micropore can be arranged.
6, composite type fuel cell bipolar plate as claimed in claim 1 is characterized in that: in the described flexible graphite plate ventilative micropore can be arranged.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2006200426749U CN2911972Y (en) | 2006-06-11 | 2006-06-11 | Composite fuel cell bipolar board |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2006200426749U CN2911972Y (en) | 2006-06-11 | 2006-06-11 | Composite fuel cell bipolar board |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2911972Y true CN2911972Y (en) | 2007-06-13 |
Family
ID=38133834
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2006200426749U Expired - Lifetime CN2911972Y (en) | 2006-06-11 | 2006-06-11 | Composite fuel cell bipolar board |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2911972Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101262066B (en) * | 2008-04-11 | 2010-06-02 | 新源动力股份有限公司 | A bipolar board for new proton exchange film fuel battery and its making method |
| CN105264706A (en) * | 2012-10-19 | 2016-01-20 | 奥迪股份公司 | Low cost fuel cell components |
| CN113571724A (en) * | 2021-06-18 | 2021-10-29 | 浙江嘉杰汽车设计有限公司 | Graphite bipolar plate |
-
2006
- 2006-06-11 CN CNU2006200426749U patent/CN2911972Y/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101262066B (en) * | 2008-04-11 | 2010-06-02 | 新源动力股份有限公司 | A bipolar board for new proton exchange film fuel battery and its making method |
| CN105264706A (en) * | 2012-10-19 | 2016-01-20 | 奥迪股份公司 | Low cost fuel cell components |
| US10651484B2 (en) | 2012-10-19 | 2020-05-12 | Audi Ag | Extruded carbon fuel cell components |
| CN113571724A (en) * | 2021-06-18 | 2021-10-29 | 浙江嘉杰汽车设计有限公司 | Graphite bipolar plate |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20070613 |
|
| EXPY | Termination of patent right or utility model |