CN105186015A - Bridging type metal bipolar plate - Google Patents
Bridging type metal bipolar plate Download PDFInfo
- Publication number
- CN105186015A CN105186015A CN201510424208.0A CN201510424208A CN105186015A CN 105186015 A CN105186015 A CN 105186015A CN 201510424208 A CN201510424208 A CN 201510424208A CN 105186015 A CN105186015 A CN 105186015A
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- CN
- China
- Prior art keywords
- gas
- plate
- groove
- sealing ring
- outlet
- 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.)
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/02—Details
- H01M8/0202—Collectors; Separators, e.g. bipolar separators; Interconnectors
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/02—Details
- H01M8/0271—Sealing or supporting means around electrodes, matrices or membranes
- H01M8/0276—Sealing means characterised by their form
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M2220/00—Batteries for particular applications
- H01M2220/10—Batteries in stationary systems, e.g. emergency power source in plant
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M2220/00—Batteries for particular applications
- H01M2220/20—Batteries in motive systems, e.g. vehicle, ship, plane
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M2220/00—Batteries for particular applications
- H01M2220/30—Batteries in portable systems, e.g. mobile phone, laptop
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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
- Y02E60/10—Energy storage using batteries
-
- 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 invention discloses a bridging type metal bipolar plate. The bridging type metal bipolar plate comprises an oxygen plate and a hydrogen plate. The oxygen plate and the hydrogen plate are laminated; a circle of sealing ring groove, used for placement of a sealing ring, is formed at the periphery of each inlet and outlet; each sealing rings seals a gas distribution passageway surface of each air inlet and each air outlet, which is connected with a gas flow field; a groove is also formed at the position of each sealing ring groove, which is overlapped with each gas distribution passageway; a support gasket which matches with the groove is placed in each groove; the upper surface of each support gasket is flushed with the bottom of each sealing ring groove and is supported at the bottom of each sealing ring; and the lower surface of each support gasket is higher than each gas distribution passageway and serves as a cavity top of the gas distribution passageway. In the bridging type metal bipolar plate, each support gasket and the bottom of each sealing ring groove form a support surface of each sealing ring, so that the sealing rings without support at the bottoms are prevented from being deformed excessively to affect the gas tightness thereof; and a gas enters the gas flow fields from gas inlets of a stereoscopic empty cavity which is formed by bottoms of the support gaskets to be distributed uniformly or enters the gas outlets from the flow fields, so that smooth flow and distribution of the gas is not affected.
Description
Technical field
The invention belongs to fuel cell field, be specifically related to a kind of fuel cell metal double polar plate structure field.
Background technology
Efficient as one, the eco-friendly Blast Furnace Top Gas Recovery Turbine Unit (TRT) of fuel cell, in base station power, middle-size and small-size power station, electric motor car, stand-by power supply, portable power supplies etc., has broad application prospects.Fuel cell can be divided into Proton Exchange Membrane Fuel Cells, direct methanol fuel cell, alkaline fuel cell, Solid Oxide Fuel Cell, fuse salt fuel cell, microbiological fuel cell, biological fuel cell etc.Fuel cell is primarily of compositions such as end plate, collector plate, bipolar plates, membrane electrodes.
Bipolar plates is the holder part of fuel cell, and mainly play a part to support, distribution directing gas flow separation gas and afflux conduct electricity, the material doing bipolar plates at present mainly contains two large classes: a class is the bipolar plates that graphite does, and a class is metal double polar plates.Because metal double polar plates has, quality is light, sheet material is thin, the advantage such as easy processing and large-scale production, is more and more used to fuel cell industry.The processing technology of metal double polar plates is different from the processing technology of traditional graphite bi-polar plate, metal double polar plates is mainly based on plate stamping, so the designing requirement of metal double polar plates to the gas flowfield of fuel cell is higher, the design of gas flowfield not only needs to design being uniformly distributed of gas, and gas inlet and outlet sealing will be solved, seal bad meeting and cause the inside and outside gas leakage of pile, cause hydraulic performance decline and the potential safety hazard of pile.
Traditional metal double polar plates uses gap type sealing ring at air inlet place, but due to the indentation, there unbalance stress of sealing ring, along with the use sealing ring mechanical performance of pile declines, fuel gas (air or oxygen) enters the runner of another pole through sealing ring, such Performance data can decline and safety causes a hidden trouble, and the phenomenon that pile can be caused time more serious " to burn heap " occurs.
Patent CN201010288870.5 disclosed a kind of " stamping forming proton exchange membrane is around chatting battery metal bi-polar plate ", comprise by the stamping forming oxygen plate of sheet metal and hydrogen plate, oxygen plate does not arrange seal groove and only arranges a circle sealing platform area in front along edge, flow field, edge, rectangular encirclement flow field, its peripheral rectangular zigzag between edge, flow field and the edge of this metallic plate and relative to the planar projections at metal-sheet edges place, are enclosed continuously and apart from metal-sheet edges certain distance and four edge chamferings in described sealing platform area in it; Hydrogen plate front arranges seal groove, and described seal groove comprises in the closed projection of this plate periphery and next-door neighbour and encloses groove between interrupted zigzag bulge-structure and closed projection and hydrogen and import and export groove between cooling water outlet and inlet.The oxygen plate of this invention and hydrogen plate, when assembling, can reduce the use of sealing ring, deformation be improved significantly and good sealing effect, greatly improve packaging efficiency.But only the structure between two pieces of metallic plates is improved in this invention, guarantee the flow channel for liquids sealing between two plates, improve the back of two pieces of metallic plates, the sealing problem between gas flow and gas inlet and outlet still fails to solve.
Patent CN200810229694.0 discloses a metal double-plate for proton exchange film fuel cell, is lined with multiple support pad, both played a supportive role to fluid sealant, and formed water stream channel again between pad at the cathode and anode chamber current import and export of bipolar plates.The main purpose of this patent is the fluid sealant support problem in order to solve water stream channel, and same support pad established by pad bottom the sealing ring of gas inlet and outlet position, there is the problem accepting inequality equally in sealing ring gap position, and because the position of support pad cannot be fixed, also can have influence on the assembling of bipolar plates, affect the distribution of gas further.
Summary of the invention
Goal of the invention: the object of the invention is for the deficiencies in the prior art, provides a kind of bridging type metal double polar plates, can ensure the uniform force of the sealing ring of gas inlet and outlet position, deformation not occur, can ensure gas smooth outflow again.
Technical scheme: bridging type metal double polar plates of the present invention, comprise oxygen plate and hydrogen plate, the both sides of described oxygen plate and hydrogen plate are provided with oxidant gas import, fuel gas inlet, cooling liquid inlet and oxidant gas outlet, fuel gas outlet, cooling liquid outlet respectively, described oxygen plate and the folded setting of hydrogen flaggy, respectively enter, the position of outlet is corresponding one by one and be communicated with up and down, the groove in described hydrogen plate and oxygen plate front forms hydrogen plate gas flowfield and oxygen plate gas flowfield in two plate surface distributed respectively, the groove of described hydrogen plate and oxygen back complements each other to form shared cooling liquid flowing channel, described cooling liquid flowing channel is communicated with cooling liquid outlet with the cooling liquid inlet of two plates, entering of described oxygen plate gas flowfield, outlet is communicated with oxidant gas outlet with the oxidant gas import of two plates respectively, entering of described hydrogen plate gas flowfield, outlet respectively with fuel gas inlet and the fuel gas outlet of two plates,
The periphery of described each import and export is provided with a circle seal groove for placing sealing ring, the gas that sealing ring confining gas import and export is connected with gas flowfield distributes water passage surface, the lap position that described seal groove and described gas distribute runner is also provided with a groove, the support pad with groove match is placed with in described groove, the upper surface of described support pad flushes with the bottom land of seal groove, be supported on the bottom of described sealing ring, lower surface distributes runner higher than described gas and distributes the top, chamber of runner as described gas.
Principle of the present invention is: in order to ensure the sealing of fuel gas import and export and oxidant gas import and export, one circle sealing ring is set in the periphery of each import and export, and cause deformation in order to avoid sealing ring distributes the gap position unbalance stress of runner at gas, a groove is set in the bottom of sealing ring, support pad is placed in groove, the supporting surface of sealing ring is jointly formed by the bottom land of support pad and seal groove, because the upper surface of support pad flushes with the bottom land of seal groove, the overall uniform force of support pad can be guaranteed; The lower surface of support pad distributes runner higher than gas and distributes the top, chamber of runner as gas, and gas enters gas flowfield by the cavity formed bottom support pad from gas feed and is uniformly distributed or enters gas vent from flow field.
The present invention further preferably technical scheme is, it is consistent with the gas flow quantity of gas flowfield that described gas distributes runner, one end that every bar gas distributes runner is communicated with corresponding gas feed or gas vent, the other end is communicated with corresponding gas flow respectively, the top of the raised platforms that adjacent two gases distribute between runner contacts with support pad, forms three dimensional support structure and supports described support pad.
Preferably, described gas distribution runner, gas flowfield, seal groove, groove and gas import and export, cooling fluid import and export are integrated punch forming.
Preferably, the bottom land of described groove is 0.04 ~ 1mm apart from the height of the bottom land of described seal groove, the thickness of described support pad and described groove match.
Preferably, described support pad is sheet metal or nonmetallic slices.
Preferably, described support pad is welded or is adhesively fixed in described groove.
Preferably, described oxygen plate gas flowfield is the anode gas flow field of S shape, is at least made up of two gas flows; Described hydrogen plate gas flowfield is the cathode gas flow fields of S shape, is at least made up of two gas flows; The back side groove part of described hydrogen plate and oxygen plate matches and forms the cooling liquid flowing channel of S shape.
Beneficial effect: the lap position distributing runner at seal groove and gas in (1) the present invention arranges a groove, the support pad with groove match is placed in groove, the upper surface of support pad flushes with the bottom land of seal groove, the supporting surface of sealing ring is jointly formed by the bottom land of support pad and seal groove, guarantee that sealing ring can not support and the excessive air-tightness that affects of deformation because of bottom, solve the gas leakage potential problem that traditional design exists due to unbalance stress due to sealing ring, improve the useful life of pile, stop to leak in pile; The lower surface of support pad distributes runner higher than gas and distributes the top, chamber of runner as gas simultaneously, gas enters gas flowfield by the three-dimensional cavity formed bottom support pad from gas feed and is uniformly distributed or enters gas vent from flow field, does not affect smooth outflow and the distribution of gas;
(2) in the present invention, the top of the raised platforms that adjacent two gases distribute between runner contacts with support pad, the bottom that three dimensional support structure is supported on support pad is formed by raised platforms, guarantee that support pad position is firm, guarantee the firm of the sealing ring on support pad top and uniform force further;
(3) gas distribution runner, gas flowfield, seal groove, groove and gas import and export of the present invention, cooling fluid import and export are integrated punch forming, while processing bipolar plates, synchronous punching press completes, be convenient to processing, be also convenient to the assembling of pile, be applicable to large-scale production;
(4) the present invention optimizes the gas flow design of metal double polar plates, and metal double polar plates flow Field Design can be made more diversified;
(5) the present invention substitutes three ply board structure by two-ply structure, not only cost-saving, and electric pile structure is simplified, lighting, the large-scale production of bipolar plates of being more convenient for and processing.
Accompanying drawing explanation
Fig. 1 is the structural representation of bridging type metal double polar plates of the present invention;
Fig. 2 is the structural representation of oxygen plate of the present invention;
Fig. 3 is the A-A sectional view of Fig. 2.
Embodiment
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 bridging type metal double polar plates, comprise stamping forming oxygen plate 1 and hydrogen plate 2, the both sides punching press respectively of oxygen plate 1 and hydrogen plate 2 has oxidant gas import 11,21, fuel gas inlet 12,22, cooling liquid inlet 13,23 and oxidant gas outlet 14,24, fuel gas outlet 15,25, cooling liquid outlet 16,26; Oxygen plate 1 and the stacked setting of hydrogen plate 2, each import and export 11,12,13,14,15,16 on oxygen plate 1 is corresponding one by one to each import and export 21,22,23,24,25,26 on hydrogen plate and be communicated with up and down, the groove in hydrogen plate 2 and oxygen plate 1 front forms hydrogen plate gas flowfield 4 and oxygen plate gas flowfield 3 in two plate surface distributed respectively, oxygen plate gas flowfield 3 is the anode gas flow field of S shape, hydrogen plate gas flowfield 4 is the cathode gas flow fields of S shape, and anode gas flow field and cathode gas flow fields are made up of three gas flows respectively; The groove at hydrogen plate 2 and oxygen plate 1 back side complements each other to form shared S shape cooling liquid flowing channel;
Cooling liquid flowing channel is communicated with cooling liquid outlet 16,26 with the cooling liquid inlet 13,23 of two plates, the import and export of oxygen plate gas flowfield 3 is communicated with oxidant gas outlet 14,24 with the oxidant gas import 11,21 of two plates respectively, and the import and export of hydrogen plate gas flowfield 4 exports 15,25 with the fuel gas inlet 12,22 of two plates with fuel gas respectively and is communicated with;
Respectively enter, the equal punch forming in periphery of outlet has a circle seal groove 5 for placing sealing ring 6, sealing ring 6 confining gas enters, outlet 11, 21, 12, 22, 14, 24, 15, 25 with gas flowfield 3, 4 gases connected distribute runner 7 surface, one end that every bar gas distributes runner 7 is communicated with corresponding gas feed or gas vent, the other end is communicated with corresponding gas flow respectively, the lap position that seal groove 5 and gas distribute runner 7 is also provided with a groove 8, the height of the bottom land of the bottom land distance seal groove 5 of groove 8 is 0.5mm, be welded with in groove 8 and groove 8 shape, the metallic support pad 9 that size matches, the upper surface of support pad 9 flushes with the bottom land of seal groove 5, be supported on the bottom of sealing ring 6, lower surface distributes runner 7 higher than gas and distributes the top, chamber of runner 7 as gas, the top of the raised platforms that adjacent two gases distribute between runner 7 contacts with support pad 9, form three dimensional support structure support pad 9.
As mentioned above, although represented with reference to specific preferred embodiment and described the present invention, it shall not be construed as the restriction to the present invention self.Under the spirit and scope of the present invention prerequisite not departing from claims definition, various change can be made in the form and details to it.
Claims (7)
1. a bridging type metal double polar plates, comprises oxygen plate and hydrogen plate, and the both sides of described oxygen plate and hydrogen plate are provided with oxidant gas import, fuel gas inlet, cooling liquid inlet and oxidant gas outlet, fuel gas outlet, cooling liquid outlet respectively, described oxygen plate and the folded setting of hydrogen flaggy, respectively enter, the position of outlet is corresponding one by one and be communicated with up and down, the groove in described hydrogen plate and oxygen plate front forms hydrogen plate gas flowfield and oxygen plate gas flowfield in two plate surface distributed respectively, the groove of described hydrogen plate and oxygen back complements each other to form shared cooling liquid flowing channel, described cooling liquid flowing channel is communicated with cooling liquid outlet with the cooling liquid inlet of two plates, entering of described oxygen plate gas flowfield, outlet is communicated with oxidant gas outlet with the oxidant gas import of two plates respectively, entering of described hydrogen plate gas flowfield, outlet respectively with fuel gas inlet and the fuel gas outlet of two plates, it is characterized in that:
The periphery of described each import and export is provided with a circle seal groove for placing sealing ring, the gas that sealing ring confining gas import and export is connected with gas flowfield distributes water passage surface, the lap position that described seal groove and described gas distribute runner is also provided with a groove, the support pad with groove match is placed with in described groove, the upper surface of described support pad flushes with the bottom land of seal groove, be supported on the bottom of described sealing ring, lower surface distributes runner higher than described gas and distributes the top, chamber of runner as described gas.
2. bridging type metal double polar plates according to claim 1, it is characterized in that, it is consistent with the gas flow quantity of gas flowfield that described gas distributes runner, one end that every bar gas distributes runner is communicated with corresponding gas feed or gas vent, the other end is communicated with corresponding gas flow respectively, the top of the raised platforms that adjacent two gases distribute between runner contacts with support pad, forms three dimensional support structure and supports described support pad.
3. bridging type metal double polar plates according to claim 2, is characterized in that, described gas distributes runner, gas flowfield, seal groove, groove and gas import and export, cooling fluid import and export is integrated punch forming.
4. bridging type metal double polar plates according to claim 1, is characterized in that, the bottom land of described groove is 0.04 ~ 1mm apart from the height of the bottom land of described seal groove, the thickness of described support pad and described groove match.
5. bridging type metal double polar plates according to claim 1, is characterized in that, described support pad is sheet metal or nonmetallic slices.
6. bridging type metal double polar plates according to claim 1, is characterized in that, described support pad is welded or is adhesively fixed in described groove.
7. the bridging type metal double polar plates according to any one of claim 1 ~ 6, is characterized in that, described oxygen plate gas flowfield is the anode gas flow field of S shape, is at least made up of two gas flows; Described hydrogen plate gas flowfield is the cathode gas flow fields of S shape, is at least made up of two gas flows; The back side groove part of described hydrogen plate and oxygen plate matches and forms the cooling liquid flowing channel of S shape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510424208.0A CN105186015A (en) | 2015-07-17 | 2015-07-17 | Bridging type metal bipolar plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510424208.0A CN105186015A (en) | 2015-07-17 | 2015-07-17 | Bridging type metal bipolar plate |
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| Publication Number | Publication Date |
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| CN105186015A true CN105186015A (en) | 2015-12-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510424208.0A Pending CN105186015A (en) | 2015-07-17 | 2015-07-17 | Bridging type metal bipolar plate |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110380076A (en) * | 2019-07-15 | 2019-10-25 | 深圳市雄韬电源科技股份有限公司 | A kind of metal plate fuel cell pile and preparation method thereof |
| CN114512691A (en) * | 2022-02-16 | 2022-05-17 | 安徽瑞氢动力科技有限公司 | Bipolar plate sealing groove structure suitable for glue dispensing forming |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004186134A (en) * | 2002-12-04 | 2004-07-02 | Asia Pacific Fuel Cell Technology Ltd | Gas channel seal structure of fuel cell set |
| CN101183723A (en) * | 2007-12-13 | 2008-05-21 | 上海交通大学 | Metal sheet profiled proton exchange membrane fuel cell bipolar plate |
| CN203644878U (en) * | 2013-12-18 | 2014-06-11 | 清华大学 | Metal bipolar plate for fuel battery |
| CN204834755U (en) * | 2015-07-17 | 2015-12-02 | 江苏绿遥燃料电池系统制造有限公司 | Bridging formula metal bipolar plate |
-
2015
- 2015-07-17 CN CN201510424208.0A patent/CN105186015A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004186134A (en) * | 2002-12-04 | 2004-07-02 | Asia Pacific Fuel Cell Technology Ltd | Gas channel seal structure of fuel cell set |
| CN101183723A (en) * | 2007-12-13 | 2008-05-21 | 上海交通大学 | Metal sheet profiled proton exchange membrane fuel cell bipolar plate |
| CN203644878U (en) * | 2013-12-18 | 2014-06-11 | 清华大学 | Metal bipolar plate for fuel battery |
| CN204834755U (en) * | 2015-07-17 | 2015-12-02 | 江苏绿遥燃料电池系统制造有限公司 | Bridging formula metal bipolar plate |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110380076A (en) * | 2019-07-15 | 2019-10-25 | 深圳市雄韬电源科技股份有限公司 | A kind of metal plate fuel cell pile and preparation method thereof |
| CN114512691A (en) * | 2022-02-16 | 2022-05-17 | 安徽瑞氢动力科技有限公司 | Bipolar plate sealing groove structure suitable for glue dispensing forming |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB02 | Change of applicant information |
Address after: Suzhou City, Jiangsu Province, Yushan Town, Kunshan City, 215313 Yu Yang Road No. 299, room 3 Applicant after: Jiangsu hydrogen power new energy Co., Ltd. Address before: 215313 Jiangsu Province, Kunshan City, Yushan City, Yu Yang Road, No. 777, China Energy Saving Industrial Park, building 20, building 3, building Applicant before: Jiangsu Lv Yao fuel cell system Manufacturing Co., Ltd |
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| COR | Change of bibliographic data | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20151223 |
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| RJ01 | Rejection of invention patent application after publication |