CN204834754U - Cross bridge type fuel cell metal bipolar plate - Google Patents
Cross bridge type fuel cell metal bipolar plate Download PDFInfo
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- CN204834754U CN204834754U CN201520523162.3U CN201520523162U CN204834754U CN 204834754 U CN204834754 U CN 204834754U CN 201520523162 U CN201520523162 U CN 201520523162U CN 204834754 U CN204834754 U CN 204834754U
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- plate
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- hydrogen
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- seal groove
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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
Abstract
The utility model discloses a cross bridge type fuel cell metal bipolar plate, including oxygen board and hydrogen board, all be equipped with the seal groove that the cross -section is " concave " type in each exit and the corresponding gas channel or the coolant liquid runner junction of oxygen board and hydrogen board, establish gaseous route and coolant liquid route " overpass " formula passageway, all be equipped with the gas -liquid division board in the cavity between the oxidant gas feed of oxygen board and hydrogen board, oxidant gas outlet, fuel gas import, the fuel gas exit seal groove, the gas -liquid division board keeps apart a sealed cavity with sealed linking to each other of seal groove with the cavity, sealed cavity is equipped with before the cavity gas pocket behind gas pocket and the cavity for the intercommunication is gaseous to be imported and exported and corresponding gas channel. The utility model discloses an institutional advancement lets the gaseous seal groove bottom of following pass through, and the atress is even everywhere to have guaranteed the seal groove, can guarantee again that gas smoothly flows, follows the design and has stopped the hidden danger that pile inside leaked gas, solves the gas leakage hidden danger problem that traditional design caused owing to sealing washer atress inequality.
Description
Technical field
The present invention relates to field of fuel cell technology, be specifically related to a kind of bridge type fuel battery metal double polar plate.
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 does not all well address this problem, gap type sealing ring is used at air inlet place, so just cause at indentation, there unbalance stress, 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.
Publication No. is that CN103700865A discloses " a kind of metal double polar plates for fuel cell ", comprise the anode unipolar plate and negative electrode unipolar plate that stack, in anode unipolar plate and negative electrode unipolar plate, all correspondence is provided with reducing agent import and export sprue, sprue imported and exported by oxidant and cooling fluid imports and exports sprue, around each sprue, annular sealing strip is set, form the reducing agent flow-guiding channel of bridge structure, oxidant flow-guiding channel and cooling fluid flow-guiding channel after two unipolar plate welding laminatings, flow-guiding channel and band are in the upper and lower surface of upper strata unipolar plate.Described band is higher than the upper plane of plane and reducing agent runner in the projection of the reducing agent flow-guiding channel of bridge structure, oxidant flow-guiding channel and cooling fluid flow-guiding channel.This invention adopts the band design of below water conservancy diversion, the flow channel of reactant turnover is separated with seal band area, optimizes the sealing problem of bipolar plates, but this structure adopts closure tape construction to seal, sealing can not continuation firm, and gas smooth outflow can not be ensured.
Publication No. is that CN101796677A discloses " to the sealing gasket of PEM fuel cell and the improvement of bipolar plates ", wherein, described bipolar plates have anode-side or cathode side or both, this anode-side has the first flow channel of the fuel for flowing to out proton, and this cathode side has the second flow channel for carrying the fluid accepting proton; Seal, is parallel to bipolar plates and is arranged in this bipolar plates, seal for by this bipolar plates against adjacent electrolytic film; It is characterized in that, described seal has the ripple providing the fluid passage of crossing the seal, for crossing the seal and flowing to out the fuel of proton along described bipolar plates or accept the fluid of proton.By arranging the seal with fluid passage, bipolar plates and electrolytic film are sealed, but this structure does not solve the problem that the sealing problem of bipolar plates itself and gas distributed flow freely distribute.
Summary of the invention
Goal of the invention: for the deficiencies in the prior art, the invention provides a kind of bridge type fuel battery metal double polar plate, solve the gas leakage potential problem that traditional design causes due to sealing ring unbalance stress, improve the useful life of pile, stop to leak in pile, reduce potential safety hazard.
Technical scheme: bridge type fuel battery metal double polar plate of the present invention, comprise hydrogen plate and oxygen plate, on described oxygen plate and hydrogen plate, all punching press has oxidant gas import, oxidant gas outlet, fuel gas inlet, fuel gas outlet, cooling liquid inlet, cooling liquid outlet and is distributed in gas flow and the cooling liquid flowing channel of described oxygen plate and hydrogen plate upper and lower surface; Described oxygen plate and hydrogen plate, with the stacked in opposite directions setting of cooling liquid flowing channel, are are respectively imported and exported one_to_one corresponding and communicate with each other; Each import and export of described hydrogen plate and oxygen plate and corresponding gas flow or cooling liquid flowing channel junction are equipped with the seal groove that cross section is " recessed " type, for setting up gas path and cooling fluid path " viaduct " formula passage, be equipped with gas-liquid demarcation strip in cavity between the oxidant gas import of described oxygen plate and hydrogen plate, oxidant gas outlet, fuel gas inlet, fuel gas exit seal groove, gas-liquid demarcation strip and seal groove seal to be connected and cavity isolation are gone out a closed cavity; The oxidant gas import of closed cavity and described oxygen plate, the oxidant gas outlet of oxygen plate, the fuel gas inlet of hydrogen plate, the fuel gas of hydrogen plate export adjacent chamber wall and are provided with pore before cavity, gas flow on closed cavity and described oxygen plate, the chamber wall that the gas flow on hydrogen plate is adjacent are provided with cavity posterior spiracle, for being communicated with the gas flow on the oxidant gas import of described oxygen plate and hydrogen plate, oxidant gas outlet and described oxygen plate, the fuel gas inlet of described oxygen plate and hydrogen plate, fuel gas outlet and the gas flow on described hydrogen plate.In each import and export surrounding of oxygen plate and hydrogen plate, the seal groove that cross section is " recessed " type is set, set up gas path and cooling fluid path " viaduct " formula passage, cavity connects cooling liquid inlet, cooling liquid outlet and cooling liquid flowing channel between oxygen plate and hydrogen plate seal groove, oxidant gas inlet ports runner, oxidant gas outlet runner, fuel gas entrance channel, fuel gas outlet flow are closed simultaneously, gas inlet and outlet and corresponding gas flow are cut off; In cavity, closed cavity is formed by arranging gas-liquid separation plate, and pore and cavity posterior spiracle before cavity is set on closed cavity, for being communicated with gas inlet and outlet and corresponding gas flow, gas is allowed to pass through bottom seal groove, ensure that seal groove uniform force everywhere, gas smooth outflow can be ensured again, stop the hidden danger of pile inside gas leakage from design, solved the gas leakage potential problem that traditional design causes due to sealing ring unbalance stress.
Improve technique scheme further, the bottom surface of the import of described oxygen plate oxidant gas, oxygen plate oxidant gas outlet, hydrogen plate fuel gas inlet, hydrogen plate fuel gas exit seal groove has difference in height relative to the contact-making surface of described oxygen plate and hydrogen plate, and the scope of difference in height is at 0.1 ~ 0.6mm.The altitude range of described closed cavity is 0.2 ~ 0.5mm, and width is suitable with described seal groove.By carrying out the design of preferred value to seal groove, closed cavity, realize regulating gas flow and coolant rate, stack temperature can be controlled well, make it to be in optimum Working.
The gas-liquid demarcation strip of the import of described oxygen plate oxidant gas, oxygen plate oxidant gas outlet, hydrogen plate fuel gas inlet, hydrogen plate fuel gas exit seal groove matches with the size and dimension of oxidant gas inlet ports runner, oxidant gas outlet runner, fuel gas entrance channel, fuel gas outlet flow respectively.After such setting, the gas-liquid partition plate structure making to be arranged between gas inlet and outlet and corresponding gas flow is more firm, and the closed cavity air-tightness formed thus is good.
Described seal groove and described gas-liquid demarcation strip carry out sealing be connected by sealing bonding or soldering.
Beneficial effect: compared with prior art, advantage of the present invention:
1, the present invention arranges seal groove and increases gas-liquid demarcation strip, gas inlet and outlet is communicated with corresponding gas flow with cavity posterior spiracle by pore before cavity, gas is allowed to pass through bottom seal groove, ensure that seal groove uniform force everywhere, gas smooth outflow can be ensured again, stop the hidden danger of pile inside gas leakage from design, solved the gas leakage potential problem that traditional design causes due to sealing ring unbalance stress, improve useful life and the fail safe of pile, reduce potential safety hazard;
2, meet runner needed for oxidant gas, fuel gas, cooling fluid by two-ply, two-ply structure substitutes three ply board 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;
3, the cooling liquid flowing channel on hydrogen plate and oxygen plate is convection type design, optimizes the gas flow design of metal double polar plates, metal double polar plates flow Field Design can be made more diversified;
4, each import and export of the present invention and gas flow, flow channel for liquids are by disposable punch forming, are convenient to processing, are applicable to large-scale production;
5, oxygen plate and hydrogen plate are equipped with many runners, improve the area utilization of bipolar plates, cost-saving.
Accompanying drawing explanation
Fig. 1 is hydrogen plate of the present invention and oxygen plate decomposition texture schematic diagram;
Fig. 2 is overall structure schematic diagram of the present invention;
Fig. 3 is vertical view of the present invention;
Fig. 4 is the profile of Fig. 3 along B-B;
Fig. 5 is the B place partial enlarged drawing of Fig. 4;
Fig. 6 is the profile of Fig. 3 along C-C;
Fig. 7 is the A place partial enlarged drawing of Fig. 6.
Embodiment
Below by accompanying drawing, technical solution of the present invention is described in detail.
embodiment 1:bridge type fuel battery metal double polar plate as shown in Figure 1, comprises two pieces of metallic plates, respectively as oxygen plate 14 and hydrogen plate 15.Oxygen plate 14 and hydrogen plate 15 in both sides respectively punching press have three import and export, comprise the oxidant gas import 141,151 being positioned at oxygen plate 14 and hydrogen plate 15 side, cooling liquid inlet 145,155, fuel gas outlet 142,152, be positioned at the fuel gas inlet 143,153 of oxygen plate 14 and hydrogen plate 15 opposite side, oxidant gas outlet 144,154, cooling liquid outlet 146,156; Oxidant gas import 141,151 and oxidant gas outlet 144,154 are in diagonal position, cooling liquid inlet 145,155 and cooling liquid outlet 146,156 are in parallel position, and fuel gas inlet 143,153 and fuel gas export 142,152 and is in diagonal position.Each import and export is equipped with the seal groove that cross section is " recessed " type, and the bottom surface that oxygen plate oxidant inlet 141, oxygen plate oxidant outlet 144, hydrogen plate fuel gas inlet 153, hydrogen plate fuel gas export 152 place's seal grooves has difference in height relative to the contact-making surface of oxygen plate 14 and hydrogen plate 15.
Be connected stacked dorsad to oxygen plate 14 and hydrogen plate 15, oxygen plate 14 and each import and export one_to_one corresponding of hydrogen plate 15, be interconnected between corresponding import and export, form metal double polar plates 16 as shown in Figures 2 and 3.Oxidant gas import 161, cooling liquid inlet 165, fuel gas outlet 162 is formed in metal double polar plates 16 side, form fuel gas inlet 163, cooling liquid outlet 166, oxidant gas outlet 164 at metal double polar plates 16 opposite side, each import and export all has seal groove 7.The oxidant gas entered from oxidant gas import 161 flow into through oxidant gas inlet ports runner the oxygen plate agent gas flow that oxygen plate lateral surface moves towards S-type, then flows out from oxidant gas outlet 164 through oxidant gas outlet runner; The fuel gas entered from fuel gas inlet 163 flow into hydrogen plate lateral surface through fuel gas inlet runner and moves towards S-type fuel gas flow passage, then exports 162 runners through fuel gas and flow out from fuel gas outlet; Cooling fluid flows into from cooling liquid inlet 165, enters the cooling liquid flowing channel between oxygen plate and hydrogen plate through cooling fluid entrance channel, then flows out from cooling liquid outlet 166 through fuel gas outlet flow.
As shown in Figures 4 to 7, oxidant gas inlet ports runner seals by the cavity between oxygen plate oxidant gas import 141, hydrogen plate oxidant gas import 151 seal groove, oxidant gas outlet runner seals by the cavity between oxygen plate oxidant gas outlet 144, hydrogen plate oxidant gas outlet 154 seal groove, fuel gas entrance channel seals by the cavity between oxygen plate fuel gas inlet 143, hydrogen plate fuel gas inlet 153 seal groove, and fuel gas outlet flow seals by the cavity that oxygen plate fuel gas outlet 142, hydrogen plate fuel gas export between 152 seal grooves; Form cavity between oxygen plate 14 and each import and export seal groove of hydrogen plate 15 to be all communicated with liquid-inlet, liquid outlet and flow channel for liquids.
The contact-making surface of the relative oxygen plate 14 in bottom surface and hydrogen plate 15 that oxygen plate oxidant gas import 141, oxygen plate oxidant gas outlet 144, hydrogen plate fuel gas inlet 153, hydrogen plate fuel gas export the seal groove at 152 places has difference in height and forms cavity, and difference in height is 0.5mm.Corresponding oxidant gas inlet ports runner in seal groove cavity between oxygen plate 14 and hydrogen plate 15 are imported and exported, oxidant gas outlet runner, fuel gas entrance channel, fuel gas outlet flow is equipped with the corresponding gas-liquid demarcation strip of size and dimension with it, each gas-liquid demarcation strip respectively with oxygen plate oxidant gas import 141, oxygen plate oxidant gas outlet 144, hydrogen plate fuel gas inlet 153, hydrogen plate fuel gas exports 152 place seal grooves sealings and is connected that cavity isolation is gone out a height is 0.3mm, the closed cavity that width is suitable with seal groove, the chamber wall that closed cavity is adjacent with gas inlet and outlet is provided with pore before cavity, chamber wall adjacent with gas flow on closed cavity is provided with cavity posterior spiracle, for being communicated with oxygen plate oxidant gas import 141, oxygen plate oxidant gas outlet 144 and oxygen plate oxidant flow channel, hydrogen plate fuel gas inlet 154, hydrogen plate fuel gas outlet 151 and hydrogen plate fuel gas flow passage.
As shown in Figure 6, membrane electrode 17 is set by between two metal double polar plates 16.
With oxidant gas, import department is specifically described: the seal groove of oxygen plate 14 is used for filling out puts oxygen plate sealing ring 148, the seal groove of hydrogen plate is used for filling out puts hydrogen plate sealing ring 158, a closed cavity 940 is isolated in oxygen plate oxidant gas import 141 place seal groove 147 and the cavity of gas-liquid separation plate 94 welded seal between oxygen plate and the oxidant gas inlet seal ring recess of hydrogen plate, in cavity, remaining space is cooling fluid cavity 751, oxidant gas enters in closed cavity 940 from pore 941 before cavity, then flow out from cavity posterior spiracle 942, to enter on oxygen plate three respectively to move towards S-type oxidant gas runner and be uniformly distributed, the oxidant gas outlet cavity posterior spiracle of the oxidant gas outlet closed cavity formed through oxygen plate oxidant gas outlet 144 place's seal groove and oxidant gas outlet gas-liquid separation plate again enters in oxidant gas outlet enclosed cavity, then flow out after pore before oxidant gas outlet cavity flow to oxidant gas outlet 164.
The height of closed cavity is less than seal groove cavity, does not affect the flowing of cooling fluid in seal groove cavity.Before cavity, the size of pore, cavity posterior spiracle, number and shape depend on the parameter of metal double polar plates gas flowfield, for being provided with three oxidant gas runners and three fuel gas flow passage on metal double polar plates, before on each closed cavity, correspondence is provided with three pairs of cavitys, pore and cavity posterior spiracle are for being separately communicated with.
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 (5)
1. a bridge type fuel battery metal double polar plate, comprise oxygen plate and hydrogen plate, on described oxygen plate and hydrogen plate, all punching press has oxidant gas import, oxidant gas outlet, fuel gas inlet, fuel gas outlet, cooling liquid inlet, cooling liquid outlet and is distributed in gas flow and the cooling liquid flowing channel of described oxygen plate and hydrogen plate upper and lower surface; Described oxygen plate and hydrogen plate, with the stacked in opposite directions setting of cooling liquid flowing channel, are are respectively imported and exported one_to_one corresponding and communicate with each other; It is characterized in that: each import and export of described hydrogen plate and oxygen plate and corresponding gas flow or cooling liquid flowing channel junction are equipped with the seal groove that cross section is " recessed " type, for setting up gas path and cooling fluid path " viaduct " formula passage, the cavity formed between described oxygen plate and the seal groove of hydrogen plate and described cooling liquid inlet or cold liquid outlet and cooling liquid runner are communicated with; Be equipped with gas-liquid demarcation strip in cavity between the oxidant gas import of described oxygen plate and hydrogen plate, oxidant gas outlet, fuel gas inlet, fuel gas exit seal groove, gas-liquid demarcation strip and seal groove seal to be connected and cavity isolation are gone out a closed cavity; Closed cavity and the import of oxygen plate oxidant gas, oxygen plate oxidant gas outlet, hydrogen plate fuel gas inlet, hydrogen plate fuel gas export adjacent chamber wall and are provided with pore before cavity, gas flow on closed cavity and described oxygen plate, the chamber wall that the gas flow on hydrogen plate is adjacent are provided with cavity posterior spiracle, for being communicated with the gas flow on the oxidant gas import of described oxygen plate and hydrogen plate, oxidant gas outlet and described oxygen plate, the fuel gas inlet of described oxygen plate and hydrogen plate, fuel gas outlet and the gas flow on described hydrogen plate.
2. bridge type fuel battery metal double polar plate according to claim 1, it is characterized in that: the bottom surface of the import of described oxygen plate oxidant gas, oxygen plate oxidant gas outlet, hydrogen plate fuel gas inlet, hydrogen plate fuel gas exit seal groove has difference in height relative to the contact-making surface of described oxygen plate and hydrogen plate, and the scope of difference in height is at 0.1 ~ 0.6mm.
3. bridge type fuel battery metal double polar plate according to claim 2, is characterized in that: the altitude range of described closed cavity is 0.2 ~ 0.5mm, and width is suitable with described seal groove.
4. bridge type fuel battery metal double polar plate according to claim 1, is characterized in that: the gas-liquid demarcation strip of the import of described oxygen plate oxidant gas, oxygen plate oxidant gas outlet, hydrogen plate fuel gas inlet, hydrogen plate fuel gas exit seal groove matches with the size and dimension of oxidant gas inlet ports runner, oxidant gas outlet runner, fuel gas entrance channel, fuel gas outlet flow respectively.
5. bridge type fuel battery metal double polar plate according to claim 1, is characterized in that: described seal groove and described gas-liquid demarcation strip carry out sealing be connected by sealing bonding or soldering.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520523162.3U CN204834754U (en) | 2015-07-17 | 2015-07-17 | Cross bridge type fuel cell metal bipolar plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520523162.3U CN204834754U (en) | 2015-07-17 | 2015-07-17 | Cross bridge type fuel cell metal bipolar plate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204834754U true CN204834754U (en) | 2015-12-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520523162.3U Withdrawn - After Issue CN204834754U (en) | 2015-07-17 | 2015-07-17 | Cross bridge type fuel cell metal bipolar plate |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204834754U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105047959A (en) * | 2015-07-17 | 2015-11-11 | 江苏绿遥燃料电池系统制造有限公司 | Over-bridge metal bipolar plate for fuel cell |
-
2015
- 2015-07-17 CN CN201520523162.3U patent/CN204834754U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105047959A (en) * | 2015-07-17 | 2015-11-11 | 江苏绿遥燃料电池系统制造有限公司 | Over-bridge metal bipolar plate for fuel cell |
| CN105047959B (en) * | 2015-07-17 | 2017-12-08 | 江苏氢电新能源有限公司 | A kind of bridge type fuel battery metal double polar plate |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: Suzhou City, Jiangsu Province, Yushan Town, Kunshan City, 215313 Yu Yang Road No. 299, room 3 Patentee 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 Patentee before: Jiangsu Lv Yao fuel cell system Manufacturing Co., Ltd |
|
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20151202 Effective date of abandoning: 20171208 |