CN201796995U - Plate for fuel cell and fuel cell thereof - Google Patents
Plate for fuel cell and fuel cell thereof Download PDFInfo
- Publication number
- CN201796995U CN201796995U CN2010201656848U CN201020165684U CN201796995U CN 201796995 U CN201796995 U CN 201796995U CN 2010201656848 U CN2010201656848 U CN 2010201656848U CN 201020165684 U CN201020165684 U CN 201020165684U CN 201796995 U CN201796995 U CN 201796995U
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- Prior art keywords
- pole plate
- fuel cell
- conservancy diversion
- water conservancy
- curved surface
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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
Disclosed is a plate for a fuel cell and a fuel cell thereof. The plate comprises a base plate, wherein the base plate includes at least one main acting face; at least one current channel is arranged on the base plate; a plurality of current guiding protruding blocks extends on two side walls of at least one current channel in intersected mode at intervals; and clearance is reserved between each of the current guiding protruding blocks and the other side walls. Further, each of the current guiding protruding blocks is provided with a front curved surface, a back curved surface and a top surface; the front curved surface faces the negative direction of a reacting current; and the back curved surface faces the same direction of the reacting curved surface. Moreover, the front curved surface is a concave surface, and the back curved surface is a convex surface. The voltage of the reacting current is effectively increased when passing through the current guiding protruding blocks, thereby not only improving the effects of the reacting current penetrating a breather layer of a membrane electrode assembly and distribution of the reacting current effectively, but also leading water produced in reaction to not accumulate easily and improving the reliability of fuel cells.
Description
Technical field
The utility model belongs to the fuel cell technology field, particularly the pole plate of fuel cell and fuel cell thereof.
Background technology
Fuel cell is considered to a kind of novel power source and energy converter that multinomial purposes is arranged.Quite a lot of different types of fuel cell is arranged, and one of them is called as Proton Exchange Membrane Fuel Cells (PEMFC).PEMFC mainly is designed to a pile bipolar plates and is clipped in the middle membrane electrode assembly (MEA) of bipolar plates, there are various types of flow fields to react the reaction interface that flows on the MEA on the bipolar plates, and discharge unnecessary heat and the water that in PEMFC, produces by electrochemical reaction to carry.Practice for many years shows that the design of bipolar plates exists many defectives, such as to management of allocative efficiency, heat and the water of reaction stream etc.Though through effort for many years, these problems still are to optimize the fuel cell performance and the major obstacle in life-span.
How effectively to provide enough reacting fluids to arrive each part of reaction interface, and how to remove effectively heat and the water while that electrochemical reaction produces in fuel cell, can keep battery temperature and membrane moisture well, these are designing requirements that the designer of every fuel cell plate bears in mind.These also are to improve fuel cell performance, and prolong the life-span important channel of fuel cell, and the design that improves fuel battery pole board is one of important R﹠D direction of fuel cell.
The pole plate of existing fuel cell is a plurality of runners of design on the basic main acting surface of fuel cell normally, carry reaction stream to the membrane electrode assembly between two-plate by these runners.Usually these runners are designed to bend level and smooth structure, are 200510104731.1 as the patent No., and name is called the Chinese patent of " bipolar plates of fuel cell ".This design can not make reaction stream enter preferably in the membrane electrode assembly, and is more just mobile in runner.
Utility model people of the present utility model is 12/319697 in the patent No. of U. S. application, name be called " a kind of bipolar plates that is used for fuel cell is made of multithread body passage; reaction stream is shunk; expansion; reflection and shunting; thus improve the distribution of reaction stream; the management of diffusion and water " U.S. Patent application, in this scheme, bipolar plates is designed to have the structure of a plurality of water conservancy diversion projections, in the runner that forms reaction stream is shunk, expansion, reflection and shunting, thereby improve the distribution of reaction stream, the management of diffusion and water, but the bigger situation of reaction stream pressure that this design is suitable for providing, and under the less situation of reaction stream pressure, because the runner design is on whole bipolar plates, this makes that the pressure of reaction stream in runner is significantly reduced, and the water that occurs the reaction generation easily is converged into large stretch of area and difficult phenomenon of discharging, and influences fuel cell performance and life-span.
The utility model content
The purpose of this utility model is, a kind of pole plate and fuel cell thereof that is used for fuel cell is provided, and when improving the reaction stream distribution, makes things convenient for the discharge of water generation reaction.
For achieving the above object, the utility model adopts following technical scheme:
A kind of pole plate that is used for fuel cell, comprise substrate with at least one significant feature face, described substrate is provided with at least one runner, and the spacing staggered extension goes out a plurality of water conservancy diversion projections on the two side of at least one described runner, has the gap between each water conservancy diversion projection and another sidewall.
Further, described water conservancy diversion projection has front curve, rear curved surface and end face, and it is reverse that described front curve orientating reaction flows, and described rear curved surface orientating reaction stream in the same way.
Further, described front curve is a concave surface, and described rear curved surface is a convex surface.
Further, the length direction of described water conservancy diversion projection is transverse to the direction of motion of reaction stream, and described gap is laterally consistent with the direction of reaction stream.
Further, the front curve of described water conservancy diversion projection has radius r 1, and described rear curved surface has radius R 1, and described front curve has identical center angle θ with rear curved surface.
Further, the angle of the concave reflection reaction stream of described water conservancy diversion projection more than or equal to 0 ° less than 180 °.
Further, the angle of the convex surface reflex response of described water conservancy diversion projection stream more than or equal to 0 ° less than 180 °.
Further, described runner comprises three first flow, second runner and the 3rd runners of being arranged in parallel of spacing successively at least, and described second runner is communicated with first flow and the 3rd runner respectively.
The utility model also provides a kind of fuel cell, comprises pole plate and air-permeable layer, and wherein, described pole plate adopts above-mentioned pole plate; The acting surface of the substrate of described pole plate is pressed to be located at and is formed a boundary element on the air-permeable layer; The end face of the water conservancy diversion projection of described pole plate is pressed and is located at described boundary element; The runner of described pole plate is formed between the water conservancy diversion projection of described pole plate and the substrate of described pole plate and the space between the described boundary element.
The utility model combines the feature and advantage of existing pole plate well, by on the two side of the level and smooth runner of existing bending, increasing the water conservancy diversion projection, make reaction stream to be shunk by the water conservancy diversion projection, expansion, reflection and shunting, thereby improved the distribution of reaction stream, the management of diffusion and water, and make when reaction stream process water conservancy diversion projection, the pressure of reaction stream can access effective enhancing, this has not only improved the effect that reaction stream penetrates the air-permeable layer of membrane electrode assembly, improved the distribution of reaction stream effectively, and make the difficult bulk phenomenon that is gathered into that reaction produces, improved the reliability of fuel cell.
Further specify the utility model below in conjunction with drawings and Examples.
Description of drawings
Fig. 1 is used for the structural representation of the pole plate embodiment of fuel cell for the utility model;
Fig. 2 is used for the structural representation of runner embodiment of the pole plate of fuel cell for the utility model;
Fig. 3 is used for the structural representation of another embodiment of pole plate of fuel cell for the utility model;
Fig. 4 is the utility model fuel cell local reaction stream mode schematic diagram.
Embodiment
Embodiment one
As shown in Figure 1, a kind of pole plate that is used for fuel cell comprises:
Described substrate 1 is provided with at least one runner 2, and many runners 2 are arranged on the substrate among Fig. 1, has only a runner 2 among Fig. 3 on the substrate;
The spacing staggered extension goes out a plurality of water conservancy diversion projections 3 on the two side of at least one described runner 2, has the gap between each water conservancy diversion projection 3 and another sidewall 2.
Wherein, each described water conservancy diversion projection 3 can be designed to multiple shape, by this water conservancy diversion projection 3 realize to reaction disturbance, to increase the runner local pressure, make the easier air-permeable layer that penetrates film utmost point assembly of reaction stream, realize that Datong District of fuel cell electrochemical efficiency promotes.And this design that increases water conservancy diversion projection 3 in the sidewall 2 of runner can make the reaction stream that is delivered to runner need not excessive pressure and get final product the lifting of realization response efficient and effective discharge of water generation reaction.
In the present embodiment, preferred water conservancy diversion projection 3 has certain altitude, and has front curve 31, rear curved surface 32 and end face, and as shown in Figure 2, it is reverse that described front curve 31 orientating reactions flow, and described rear curved surface 32 orientating reactions stream in the same way.
Wherein, front curve 31 is a concave surface, and described rear curved surface 32 is a convex surface 32, and described end face is the plane.
The length direction of described water conservancy diversion projection 3 is transverse to the direction of motion of reaction stream, and described gap is laterally consistent with the direction of reaction stream.
The front curve 31 of described water conservancy diversion projection 3 has radius r 1, and described rear curved surface 32 has radius R 1, and described front curve 31 has identical center angle θ with rear curved surface 32.
Wherein, the angle of the concave reflection reaction stream of described water conservancy diversion projection 3 more than or equal to 90 ° less than 180 °.
Wherein, the angle of the convex surface reflex response of described water conservancy diversion projection 3 stream more than or equal to 90 ° less than 180 °.
Wherein, the height of described water conservancy diversion projection 3 is identical with the height of two side 2.
Wherein, described runner 2 can be multiple shape, as linear pattern, crooked broken line, curve etc.The preferred zigzag that adopts in the utility model, as shown in Figure 3, promptly comprise three successively the first flow 21, second runner 22 and the 3rd runner 23, the second runners 22 that are arranged in parallel of spacing be communicated with first flow 21 and the 3rd runner 23 respectively.Reaction stream enters from first flow 21, flows out from the 3rd runner 23.
Embodiment two
A kind of fuel cell comprises pole plate and air-permeable layer:
Adopt embodiment one described pole plate;
The acting surface of the substrate of described pole plate is pressed to be located at and is formed a boundary element on the air-permeable layer;
The end face of the water conservancy diversion projection 3 of described pole plate is pressed and is located at described boundary element;
Many runners of described pole plate are formed between the water conservancy diversion projection 3 of described pole plate and the substrate 1 of described pole plate and the space between the described boundary element.
As shown in Figure 4, reaction stream in runner 2 often impinges upon the front curve 31 of the water conservancy diversion projection 3 on the substrate 1, make reaction stream be forced to seek all other possible paths that flow forward, because the local fluid pressure and the variation of speed, reaction stream also is pressed on the air-permeable layer 4 to find out the path that moves forward.Therefore, this mobile trend really is in minisize fluid pattern and the diffusion process improved 4 li of air-permeable layer.Shown in some arrows among Fig. 3 and dotted line, by the reaction stream in all directions that are reflected in runner, bipolar plates in the utility model can be improved the touchdown area 41 (between two vertical dotted line) that reaction stream is distributed to water conservancy diversion projection 3, promptly against the below of the end face of the baffle 3 of air-permeable layer 4.
The utility model organically combines the feature and advantage of existing pole plate, by on the two side 2 of the level and smooth runner of existing bending, increasing water conservancy diversion projection 3, make reaction stream to be shunk by water conservancy diversion projection 3, expansion, reflection and shunting, thereby improved the distribution of reaction stream, the management of diffusion and water, and make when reaction stream process water conservancy diversion projection 3, the pressure P of reaction stream can access effective enhancing, promptly increased pressure Δ P, on equal space length, increased substantially pressure differential, this has not only improved the effect that reaction stream penetrates the air-permeable layer 4 of membrane electrode assembly, improved the distribution of reaction stream effectively, and make the difficult bulk phenomenon that is gathered into that reaction produces, improved the reliability of fuel cell.
Above-described embodiment only is used to illustrate technological thought of the present utility model and characteristics, its purpose is to make those skilled in the art can understand content of the present utility model and implements according to this, can not only limit claim of the present utility model with present embodiment, be all equal variation or modifications of doing according to the spirit that the utility model disclosed, still drop in the claim of the present utility model.
Claims (9)
1. a pole plate that is used for fuel cell comprises the substrate (1) with at least one significant feature face, and described substrate (1) is provided with at least one runner (2), it is characterized in that:
The spacing staggered extension goes out a plurality of water conservancy diversion projections (3) on the two side of at least one described runner (2), has the gap between each water conservancy diversion projection (3) and another sidewall (2).
2. the pole plate that is used for fuel cell according to claim 1 is characterized in that:
Described water conservancy diversion projection (3) has front curve (31), rear curved surface (32) and end face, and it is reverse that described front curve (31) orientating reaction flows, and described rear curved surface (32) orientating reaction flows in the same way.
3. the pole plate that is used for fuel cell according to claim 2 is characterized in that:
Described front curve (31) is a concave surface, and described rear curved surface (32) is a convex surface (32).
4. the pole plate that is used for fuel cell according to claim 3 is characterized in that:
The length direction of described water conservancy diversion projection (3) is transverse to the direction of motion of reaction stream, and described gap is laterally consistent with the direction of reaction stream.
5. the pole plate that is used for fuel cell according to claim 4 is characterized in that:
The front curve (31) of described water conservancy diversion projection (3) has radius r 1, and described rear curved surface (32) has radius R 1, and described front curve (31) has identical center angle θ with rear curved surface (32).
6. the pole plate that is used for fuel cell according to claim 5 is characterized in that:
The angle of the concave reflection reaction stream of described water conservancy diversion projection (3) more than or equal to 0 ° less than 180 °.
7. the pole plate that is used for fuel cell according to claim 6 is characterized in that:
The angle of the convex surface reflex response of described water conservancy diversion projection (3) stream more than or equal to 0 ° less than 180 °.
8. the pole plate that is used for fuel cell according to claim 5 is characterized in that:
Described runner (2) comprises three first flow (21), second runner (22) and the 3rd runners (23) of being arranged in parallel of spacing successively at least, and described second runner (22) is communicated with first flow (21) and the 3rd runner (23) respectively.
9. a fuel cell comprises pole plate and air-permeable layer, it is characterized in that:
Adopt each described pole plate of claim 1 to 8;
The acting surface of the substrate of described pole plate is pressed to be located at and is formed a boundary element on the air-permeable layer;
The end face of the water conservancy diversion projection (3) of described pole plate is pressed and is located at described boundary element;
The runner of described pole plate (2) is formed between the water conservancy diversion projection (3) of described pole plate and the substrate (1) of described pole plate and the space between the described boundary element.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201656848U CN201796995U (en) | 2010-03-30 | 2010-03-30 | Plate for fuel cell and fuel cell thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201656848U CN201796995U (en) | 2010-03-30 | 2010-03-30 | Plate for fuel cell and fuel cell thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201796995U true CN201796995U (en) | 2011-04-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010201656848U Expired - Lifetime CN201796995U (en) | 2010-03-30 | 2010-03-30 | Plate for fuel cell and fuel cell thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201796995U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101800319A (en) * | 2010-03-30 | 2010-08-11 | 上海恒劲动力科技有限公司 | Electrode plate for fuel cell and fuel cell thereof |
| CN108258261A (en) * | 2018-01-10 | 2018-07-06 | 天津大学 | A kind of variable cross-section fuel cell channel |
| CN108550875A (en) * | 2018-04-25 | 2018-09-18 | 武汉理工大学 | A kind of flow channels for proton exchange membrane fuel cells |
| CN108987764A (en) * | 2018-08-10 | 2018-12-11 | 清华大学 | Flow-field plate and fuel cell including the flow-field plate |
| CN111540925A (en) * | 2020-05-07 | 2020-08-14 | 擎能动力科技(苏州)有限公司 | Single fuel cell, fuel cell stack and working mode |
-
2010
- 2010-03-30 CN CN2010201656848U patent/CN201796995U/en not_active Expired - Lifetime
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101800319A (en) * | 2010-03-30 | 2010-08-11 | 上海恒劲动力科技有限公司 | Electrode plate for fuel cell and fuel cell thereof |
| CN101800319B (en) * | 2010-03-30 | 2012-09-26 | 上海恒劲动力科技有限公司 | Electrode plate for fuel cell and fuel cell thereof |
| CN108258261A (en) * | 2018-01-10 | 2018-07-06 | 天津大学 | A kind of variable cross-section fuel cell channel |
| CN108258261B (en) * | 2018-01-10 | 2020-11-27 | 天津大学 | Variable cross-section fuel cell flow channel |
| CN108550875A (en) * | 2018-04-25 | 2018-09-18 | 武汉理工大学 | A kind of flow channels for proton exchange membrane fuel cells |
| CN108987764A (en) * | 2018-08-10 | 2018-12-11 | 清华大学 | Flow-field plate and fuel cell including the flow-field plate |
| CN108987764B (en) * | 2018-08-10 | 2021-08-31 | 清华大学 | Flow field plate and fuel cell including the same |
| CN111540925A (en) * | 2020-05-07 | 2020-08-14 | 擎能动力科技(苏州)有限公司 | Single fuel cell, fuel cell stack and working mode |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20110413 Effective date of abandoning: 20130227 |
|
| RGAV | Abandon patent right to avoid regrant |