CN102104150A - Bipolar plate with mosquito incense type flow field distribution structure - Google Patents
Bipolar plate with mosquito incense type flow field distribution structure Download PDFInfo
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- CN102104150A CN102104150A CN2011100216676A CN201110021667A CN102104150A CN 102104150 A CN102104150 A CN 102104150A CN 2011100216676 A CN2011100216676 A CN 2011100216676A CN 201110021667 A CN201110021667 A CN 201110021667A CN 102104150 A CN102104150 A CN 102104150A
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- tail gas
- bipolar plates
- oxidant gas
- fuel
- flow field
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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 invention relates to a bipolar plate with a mosquito incense type flow field distribution structure, comprising a bipolar plate body, the bipolar plate body is provided with a fuel and oxidant gas inlet and a tail gas outlet and in the shape of a cylinder; the surface of the cylinder is provided with an annular flow channel; the annular flow channel comprises multiple layers of annular flow channel units which are arranged from a circle center to an outer circle and mutually separated; the fuel and oxidant gas inlet is communicated with inlets of the annular flow channel units; the outlets of the annular flow channel units are communicated with the tail gas outlet; and the fuel and oxidant gas inlet and the tail gas outlet are radially arranged. The bipolar plate with the mosquito incense type flow field distribution structure has uniform distribution and effectively enhances the battery performance.
Description
Technical field
The present invention relates to the Proton Exchange Membrane Fuel Cells technical field, especially a kind of bipolar plates.
Background technology
The material battery is the device that chemical energy is directly changed into electric energy, is not subjected to the restriction of Carnot cycle, the energy conversion rate height, and environmentally safe is considered to following clean energy resource.A Proton Exchange Membrane Fuel Cells (PEMFC) body is made up of several battery cells, and a battery cell mainly is made up of membrane electrode (negative electrode, proton exchange membrane and anode) and bipolar plates.Bipolar plates is one of critical component of forming battery pile that the PEMFC monocell is together in series, so whether the flow passage structure of bipolar plates rationally directly influence battery life and performance, is problem very important in the fuel cell.Reasonably flow field plate design should satisfy following requirement: required fuel and the oxidant of (1) energy uniform distribution cell power generation, and even with the assurance electric current distribution, thus the local overheating of avoiding; (2) water that reaction is generated purges and carries secretly down at reaction end gas and discharges smoothly.
At present, basic runner type mainly comprises serpentine flow path, through-type runner, parallel serpentine flow path, interdigital runner, helical flow path and grid runner etc.More than various runner types all exist separately shortcoming, but the bigger shortcoming of fuel battery performance influence is mainly contained: the long meeting of runner causes bigger reacting gas concentration poor, be unfavorable for the discharge of moisture, especially single channel structure, the entrance pressure drop of reacting gas is excessive, has a strong impact on the performance of battery; Flow passage structure unreasonable caused the inhomogeneous distribution of reacting gas in each runner easily; The layout of reacting gas inlet and outlet is unreasonable, and the difficult water balance of realizing is managed.
Summary of the invention
For the maldistribution that overcomes existing bipolar plate flow field structure, the deficiency of restriction battery performance, the invention provides a kind of distributed uniform, effectively promote the bipolar plates of the mosquito-repellent incense type Flow Field Distribution structure of battery performance.
The technical solution adopted for the present invention to solve the technical problems is:
A kind of bipolar plates of mosquito-repellent incense type Flow Field Distribution structure, comprise the bipolar plates body, described bipolar plates body is provided with fuel and oxidant gas import and tail gas outlet, described bipolar plates body is cylinder, described cylindrical surface is provided with annular channel, described annular channel comprises the annular channel unit that the multilayer that is provided with is isolated mutually from the center of circle to the outer ring, described fuel and oxidant gas import are communicated with the import of each annular channel unit, the outlet of each annular channel unit is communicated with described tail gas outlet, and described fuel and oxidant gas import and tail gas outlet are radially setting.
Further, be provided with dividing plate between the outlet of described fuel and oxidant gas import and tail gas.
Further again, described fuel and oxidant gas import and tail gas outlet are positioned on the described cylindrical same diameter; This structure can realize uniform distribution.
Described oxidant gas import and tail gas outlet have more than two at least, and oxidant gas import and tail gas outlet are arranged alternately and uniformly-spaced are arranged on the circumference, are applicable to large-scale fuel cell.
Preferably, the outlet of described fuel and oxidant gas import and tail gas is set on described cylindrical same diameter, this energy-conservation can realization is distributed more uniformly.
Technical conceive of the present invention is: on external form, break through traditional pattern, adopt cylinder to replace cuboid, make that the area of reaction zone increases in the fuel cell, improve the utilance of reacting gas.
Adopt the annular channel structure that concentric circles constituted, the size of each runner is dwindled from outside to inside gradually, is just meeting the rule of concentration from entering the mouth and successively decreasing gradually toward the center of circle of reacting gas, reacts more even, improves the stability of cell output.
Annular channel is compared with other runners, does not have the turning, so the contact resistance of reacting gas and runner is little, thereby the entrance pressure drop of reacting gas is also little.
In order to make Proton Exchange Membrane Fuel Cells be in high performance operating state, must remain the state that proton exchange membrane wherein is in not dehydration of humidifying.This patent adopts the reacting gas inlet mode adjacent with outlet, and the reverse relatively walking of the air-flow in two runners can utilize water that reaction generates that the gas at reacting gas inlet place is carried out from humidification, thereby avoid extra external humidification device.
Beneficial effect of the present invention is: it is unobstructed to have an air-flow, be evenly distributed, and the utilance height, stable performance, the reacting gas inlet pressure drop is little, and contact resistance is low and have a effect from humidification.In addition, the structure of this patent can be adjusted according to the size of bipolar plates, and the scope of application is wider.
Description of drawings
Fig. 1 is a kind of structure chart of bipolar plates of mosquito-repellent incense type Flow Field Distribution structure.
Fig. 2 is the structure chart of the bipolar plates of another kind of mosquito-repellent incense type Flow Field Distribution structure.
Fig. 3 is the structure chart of the bipolar plates of another mosquito-repellent incense type Flow Field Distribution structure.
Embodiment
Below in conjunction with accompanying drawing the present invention is further described.
With reference to Fig. 1～Fig. 3, a kind of bipolar plates of mosquito-repellent incense type Flow Field Distribution structure, comprise bipolar plates body 1, described bipolar plates body 1 is provided with fuel and oxidant gas import 3 and tail gas outlet 4, described bipolar plates body 1 is cylinder, described cylindrical surface is provided with annular channel, described annular channel comprises the annular channel unit 2 that the multilayer that is provided with is isolated mutually from the center of circle to the outer ring, described fuel and oxidant gas import 3 are communicated with the import of each annular channel unit 2, the outlet of each annular channel unit 2 is communicated with described tail gas outlet 4, and described fuel and oxidant gas import 3 and tail gas outlet 4 are radially setting.
Be provided with dividing plate between described fuel and oxidant gas import and the tail gas outlet.
Or: described fuel and oxidant gas import and tail gas outlet are positioned on the described cylindrical same diameter; This structure can realize uniform distribution.
Described oxidant gas import and tail gas outlet have more than two at least, and oxidant gas import and tail gas outlet are arranged alternately and uniformly-spaced are arranged on the circumference, are applicable to large-scale fuel cell.
Preferably, the outlet of described fuel and oxidant gas import and tail gas is set on described cylindrical same diameter, this energy-conservation can realization is distributed more uniformly.
As shown in Figure 1, the bipolar plates of mosquito-repellent incense type Flow Field Distribution structure comprises: the import 3 of bipolar plates body 1, fuel and oxidant gas, annular channel 2, cooling fluid (normally water) and tail gas outlet 4.The outlet 4 of the import 3 of described fuel and oxidant gas and cooling fluid and tail gas is adjacent and establish, reacting gas enters annular channel unit 2 from the import 3 of fuel and oxidant gas, in the direction of the clock, discharge outside the bipolar plates or the import 3 of directly receiving fuel and oxidant gas through the tail gas after reaction and the consumption from the outlet 4 of cooling fluid and tail gas, enter runner with new fuel and oxidant gas and participate in reaction, realize recycling, and because the reacting gas import and export are adjacent, the reverse relatively walking of gas in the runner separately, the water that makes reaction be generated carries out humidification to the reacting gas that just enters runner, if parameter is provided with proper, be expected to really realize zero discharge.
If at micro fuel cell, the bipolar plates size is less, can adopt the mode of singly advancing singly to go out, as Fig. 1.Shown in.
If at large-scale fuel cell pack, the bipolar plates size is bigger, and this moment, annular channel was longer, can evenly increase the import and export of reacting gas at the annular channel circumferencial direction, to guarantee the fuel battery energy steady operation.Shown in Fig. 2,3.
Claims (5)
1. the bipolar plates of a mosquito-repellent incense type Flow Field Distribution structure, comprise the bipolar plates body, described bipolar plates body is provided with fuel and oxidant gas import and tail gas outlet, it is characterized in that: described bipolar plates body is cylinder, described cylindrical surface is provided with annular channel, described annular channel comprises the annular channel unit that the multilayer that is provided with is isolated mutually from the center of circle to the outer ring, described fuel and oxidant gas import are communicated with the import of each annular channel unit, the outlet of each annular channel unit is communicated with described tail gas outlet, and described fuel and oxidant gas import and tail gas outlet are radially setting.
2. the bipolar plates of mosquito-repellent incense type Flow Field Distribution structure as claimed in claim 1 is characterized in that: be provided with dividing plate between described fuel and oxidant gas import and the tail gas outlet.
3. the bipolar plates of mosquito-repellent incense type Flow Field Distribution structure as claimed in claim 1 is characterized in that: described fuel and oxidant gas import and tail gas outlet are positioned on the described cylindrical same diameter.
4. the bipolar plates of mosquito-repellent incense type Flow Field Distribution structure as claimed in claim 1 is characterized in that: described oxidant gas import and tail gas outlet have more than two at least, and oxidant gas import and tail gas outlet are arranged alternately and uniformly-spaced are arranged on the circumference.
5. the bipolar plates of mosquito-repellent incense type Flow Field Distribution structure as claimed in claim 4 is characterized in that: the outlet of described fuel and oxidant gas import and tail gas is set on described cylindrical same diameter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100216676A CN102104150A (en) | 2011-01-18 | 2011-01-18 | Bipolar plate with mosquito incense type flow field distribution structure |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100216676A CN102104150A (en) | 2011-01-18 | 2011-01-18 | Bipolar plate with mosquito incense type flow field distribution structure |
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| CN102104150A true CN102104150A (en) | 2011-06-22 |
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| CN2011100216676A Pending CN102104150A (en) | 2011-01-18 | 2011-01-18 | Bipolar plate with mosquito incense type flow field distribution structure |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104037426A (en) * | 2014-05-28 | 2014-09-10 | 浙江工业大学 | Bipolar plate with flow field in tree-shaped gradually-shrinking structure for PEMFC (proton exchange membrane fuel cell) |
| CN110429297A (en) * | 2019-09-05 | 2019-11-08 | 山东建筑大学 | A kind of new fuel cell circle bipolar plates |
| CN112768717A (en) * | 2020-12-31 | 2021-05-07 | 新源动力股份有限公司 | Circular fuel cell bipolar plate |
| CN112838235A (en) * | 2020-12-31 | 2021-05-25 | 新源动力股份有限公司 | Hydrogen fuel cell stick structure |
| CN115332558A (en) * | 2022-10-11 | 2022-11-11 | 上海治臻新能源股份有限公司 | Fuel cell |
| CN115579715A (en) * | 2022-11-18 | 2023-01-06 | 中国航天三江集团有限公司 | Optical element, cooling device and method, cooling flow channel structure and manufacturing method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11154524A (en) * | 1997-11-20 | 1999-06-08 | Toyota Motor Corp | Fuel cell |
| CN1953257A (en) * | 2005-10-19 | 2007-04-25 | 比亚迪股份有限公司 | A flow field plate and fuel cell stack containing the same |
| CN101656320A (en) * | 2009-09-04 | 2010-02-24 | 新奥科技发展有限公司 | Flow-field plate for electrochemical cell |
-
2011
- 2011-01-18 CN CN2011100216676A patent/CN102104150A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11154524A (en) * | 1997-11-20 | 1999-06-08 | Toyota Motor Corp | Fuel cell |
| CN1953257A (en) * | 2005-10-19 | 2007-04-25 | 比亚迪股份有限公司 | A flow field plate and fuel cell stack containing the same |
| CN101656320A (en) * | 2009-09-04 | 2010-02-24 | 新奥科技发展有限公司 | Flow-field plate for electrochemical cell |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104037426A (en) * | 2014-05-28 | 2014-09-10 | 浙江工业大学 | Bipolar plate with flow field in tree-shaped gradually-shrinking structure for PEMFC (proton exchange membrane fuel cell) |
| CN104037426B (en) * | 2014-05-28 | 2016-05-18 | 浙江工业大学 | The dual polar plates of proton exchange membrane fuel cell in a kind of tree-shaped tapered configuration flow field |
| CN110429297A (en) * | 2019-09-05 | 2019-11-08 | 山东建筑大学 | A kind of new fuel cell circle bipolar plates |
| CN112768717A (en) * | 2020-12-31 | 2021-05-07 | 新源动力股份有限公司 | Circular fuel cell bipolar plate |
| CN112838235A (en) * | 2020-12-31 | 2021-05-25 | 新源动力股份有限公司 | Hydrogen fuel cell stick structure |
| CN112768717B (en) * | 2020-12-31 | 2022-05-31 | 新源动力股份有限公司 | Circular fuel cell bipolar plate |
| CN115332558A (en) * | 2022-10-11 | 2022-11-11 | 上海治臻新能源股份有限公司 | Fuel cell |
| CN115579715A (en) * | 2022-11-18 | 2023-01-06 | 中国航天三江集团有限公司 | Optical element, cooling device and method, cooling flow channel structure and manufacturing method thereof |
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Application publication date: 20110622 |