CN209929408U - Metal plate fuel cell single cell structure with long service life and reliability and electric pile - Google Patents
Metal plate fuel cell single cell structure with long service life and reliability and electric pile Download PDFInfo
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- CN209929408U CN209929408U CN201920984399.XU CN201920984399U CN209929408U CN 209929408 U CN209929408 U CN 209929408U CN 201920984399 U CN201920984399 U CN 201920984399U CN 209929408 U CN209929408 U CN 209929408U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/30—Hydrogen technology
- Y02E60/50—Fuel cells
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Abstract
The utility model discloses a metal sheet fuel cell list pond structure and pile of long-life and reliability belongs to fuel cell technical field, for solving the poor scheduling problem design of current list pond structure cooling effect. The utility model discloses metal sheet fuel cell list pond structure includes metal negative plate, cathode seal spare, membrane electrode, anode seal spare and metal anode plate, sets up a set of coolant entry common channel and coolant outlet common channel on metal negative plate and metal anode plate's side at least, and the coolant entry common channel and the coolant outlet common channel that are linked together set up respectively on two relative sides on metal negative plate or metal anode plate. The utility model discloses the coolant of the single cell structure of metal sheet fuel cell of long-life and reliability and galvanic pile passes through the conduction of metal negative and positive plate, can contact with the fuel and the oxidant of different positions department, the heat transfer, and the coolant can take place the heat exchange with the fuel and the oxidant of different positions department, and the effect that adjusts the temperature is better.
Description
Technical Field
The utility model relates to a fuel cell technical field especially relates to a metal sheet fuel cell list cell structure of long-life and reliability and including the pile of this list cell structure.
Background
A fuel cell is a power generation device that directly converts chemical energy in a fuel and an oxidant into electrical energy through an electrocatalytic reaction on an electrical machine. Each fuel cell consists of a plurality of power generation single cells, each power generation single cell comprises a metal cathode plate, a cathode sealing element, a Membrane Electrode (MEA), an anode sealing element and a metal anode plate which are sequentially arranged, the metal cathode plate and the Membrane Electrode (MEA) are overlapped, and a cavity formed by the cathode sealing element is an oxidant cavity; the metal anode plate is overlapped with a Membrane Electrode Assembly (MEA), and a cavity formed by an anode sealing element is a fuel cavity; the coolant side of the metal cathode plate is oppositely overlapped with the coolant side of the metal anode plate, a complete metal bipolar plate is formed through a welding process, and a coolant cavity is formed in the middle of the metal bipolar plate.
All seted up oxidant import and export, fuel import and export and coolant import and export on current metal negative plate and the metal anode plate, it is concrete, on one side end of metal negative plate or metal anode plate, can set gradually oxidant import, coolant import and fuel import, or set gradually oxidant export, coolant export and fuel export, the cooling effect is relatively poor, and cooling efficiency is not high.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a metal sheet fuel cell list pond structure of long-life and reliability that cooling effect is better.
Another object of the present invention is to provide a galvanic pile with stronger power generation capability.
To achieve the purpose, on one hand, the utility model adopts the following technical scheme:
the utility model provides a metal sheet fuel cell single cell structure of long-life and reliability, is including the metal negative plate, cathode seal spare, membrane electrode, anode seal spare and the metal anode plate that set gradually, metal negative plate with be provided with oxidant entry common channel and fuel export common channel on one side end of metal anode plate respectively, be provided with oxidant export common channel and fuel entry common channel on the other end, metal negative plate with form the coolant chamber between the metal anode plate, metal negative plate with form the oxidant chamber between the membrane electrode, metal anode plate with form the fuel chamber between the membrane electrode metal negative plate with set up a set of coolant entry common channel and coolant export common channel on the side of metal negative plate with metal anode plate at least, be linked together coolant entry common channel with coolant export common channel sets up respectively metal negative plate or on the metal anode plate On opposite sides of the base.
In particular, two of the coolant inlet common channels are provided on opposite sides of the metallic cathode plate and the metallic anode plate, respectively, each of the coolant inlet common channels being provided at a position on a side close to the oxidant inlet common channel or the fuel outlet common channel; and/or two coolant outlet common channels are provided on opposite side edges of the metal cathode plate and the metal anode plate, respectively, each of the coolant outlet common channels being provided at a position on a side edge close to the oxidant outlet common channel or the fuel inlet common channel.
In particular, the thickness of the middle part of the membrane electrode is larger than that of the edge.
Particularly, the cathode sealing member and/or the anode sealing member are integrally formed by silicon rubber or ethylene propylene diene monomer rubber.
Particularly, a convex structure is formed on the cathode sealing member at a position corresponding to the groove on the metal cathode plate, and/or a convex structure is formed on the anode sealing member at a position corresponding to the groove on the metal anode plate, and the convex structure can be embedded into the groove.
In particular, the metallic cathode plate and/or the metallic anode plate is stamped from 316L stainless steel or a titanium alloy.
Particularly, the metal cathode plate is provided with an oxidant distribution structure for balancing the flow rate and the flow resistance of the oxidant and an oxidant flow field structure for circulating the oxidant.
In particular, the metal anode plate is provided with a fuel distribution structure for balancing fuel flow and flow resistance and a fuel flow field structure for circulating fuel.
On the other hand, the utility model adopts the following technical scheme:
the utility model provides a galvanic pile, includes the metal sheet fuel cell single cell structure of the above-mentioned long-life and reliability that a plurality of set gradually, adjacent two the metal negative plate and the metal anode plate welding of single cell structure form metal bipolar plate.
The utility model discloses the coolant entry common channel and the coolant export common channel of the single pond structure of metal sheet fuel cell of long-life and reliability set up respectively on the opposite side edge of metal negative plate or metal anode plate, the circulation route of coolant respectively with the circulation route of fuel, there is certain contained angle between the circulation route of oxidant, the coolant can contact with the fuel and the oxidant of different positions department, the heat transfer. Compared with the existing structure that the coolant inlet and the coolant outlet are arranged between the fuel inlet and the fuel outlet and the oxidant inlet and the oxidant outlet, the coolant in the embodiment can exchange heat with the fuel and the oxidant at different positions, and the temperature adjusting effect is better; compared with the existing structure with only one pair of coolant inlets and outlets, the coolant flow in the embodiment is larger, and the temperature adjusting efficiency is higher.
The electric pile of the utility model comprises a plurality of single-pool structures which are arranged in sequence, can exchange heat with fuels and oxidants at different positions, and has better temperature adjusting effect; the fuel and oxidant fluid are distributed more uniformly, the reaction is more sufficient, and the power density of the fuel cell stack is effectively improved; the sealing effect is good, and the service life and the reliability of the fuel cell stack are effectively improved.
Drawings
Fig. 1 is an exploded view of a single cell structure according to an embodiment of the present invention;
FIG. 2 is a cross-sectional view of a single cell structure according to an embodiment of the present invention;
FIG. 3 is a front view of a metal cathode plate according to an embodiment of the present invention;
fig. 4 is a front view of a metallic anode plate according to an embodiment of the present invention;
FIG. 5 is a front view of a metal cathode plate with an increased coolant flow area according to an embodiment of the present invention;
FIG. 6 is a front view of a metal anode plate with an increased coolant flow area according to an embodiment of the present invention;
fig. 7 is a front view of a cathode seal according to an embodiment of the present invention;
FIG. 8 is a front view of an anode seal according to an embodiment of the present invention;
fig. 9 is a front view of a membrane electrode according to an embodiment of the present invention.
In the figure:
1. a metal cathode plate; 2. a cathode seal; 3. a membrane electrode; 4. an anode seal member; 5. a metal anode plate; 6. an oxidant chamber; 7. a fuel chamber; 8. a coolant cavity; 10. an oxidant distribution structure; 11. an oxidant flow field structure; 12. an oxidant inlet common channel; 14. an oxidant outlet common channel; 16. a fuel inlet common passage; 18. a fuel outlet common passage; 20. a coolant inlet common channel; 22. a coolant outlet common channel; 27. a fuel distribution structure; 28. a fuel flow field configuration; 31. a middle part; 32. an edge.
Detailed Description
The technical solution of the present invention is further explained by the following embodiments with reference to the accompanying drawings.
The embodiment discloses a metal plate fuel cell single cell structure with long service life and reliability and an electric pile, wherein the electric pile comprises a plurality of single cell structures which are arranged in sequence, and a metal cathode plate and a metal anode plate of two adjacent single cell structures are welded to form a metal bipolar plate. Introducing oxidant and fuel into the fuel cell to fully react to generate electric energy; and the coolant is introduced to ensure that the temperature distribution of the fuel cell stack is uniform.
As shown in fig. 1 to 7, the single cell structure includes a metal cathode plate 1, a cathode sealing member 2, a membrane electrode 3, an anode sealing member 4 and a metal anode plate 5, which are sequentially arranged, and the single cell structure is formed under a certain pressure.
Wherein, the metal cathode plate 1 and the metal anode plate 5 are two metal pole plates with similar structures and same functions. The two sides of the metal cathode plate 1 are respectively an oxidant flow field side and a coolant flow field side, and the two sides of the metal anode plate 5 are respectively a fuel flow field side and a coolant flow field side. Specifically, an oxidant inlet common channel 12 and a fuel outlet common channel 18 are respectively arranged on one end of the metal cathode plate 1 and one end of the metal anode plate 5, an oxidant outlet common channel 14 and a fuel inlet common channel 16 are arranged on the other end of the metal cathode plate, the oxidant inlet common channel 12 is communicated with the oxidant outlet common channel 14, the oxidant inlet common channel 12 and the fuel outlet common channel 14 are positioned on the diagonal line, and the fuel inlet common channel 16 is communicated with the fuel outlet common channel 18, the fuel inlet common channel 16 and the fuel outlet common channel 18 are positioned on the diagonal line. In fig. 3 to 6, the cooling liquid circulation area is shown in the dotted line, and compared with the prior art, the cooling liquid circulation area has a larger area and better cooling effect.
The coolant side of the metallic cathode plate 1 is overlapped opposite to the coolant side of the metallic anode plate 5, welded to form a metallic bipolar plate, and a coolant chamber 8 is formed between the metallic cathode plate 1 and the metallic anode plate 5. The metal cathode plate 1 is overlapped with the membrane electrode 3, and an oxidant cavity 6 is formed among the metal cathode plate 1, the cathode sealing member 2 and the membrane electrode 3. The metal anode plate 5 is overlapped with the membrane electrode 3, and a fuel cavity 7 is formed among the metal anode plate 5, the membrane electrode 3 and the anode sealing member 4. The chambers are independent from each other, the oxidant and the fuel react through the membrane electrode 3, so that electric energy is generated, and the reaction process is safe and efficient. Preferably, a cathode sealing structure is formed on the metallic cathode plate 1, an anode sealing structure is formed on the metallic anode plate 5, and a sealing member is installed through the sealing structures, thereby separating the fuel, the oxidizer, and the coolant and sealing the fuel chamber, the oxidizer chamber, and the coolant chamber.
Two coolant inlet common channels 20 are provided on opposite side edges of the metal cathode plate 1 and the metal anode plate 5, respectively, and each coolant inlet common channel 20 is provided at a position on the side edge close to the oxidant inlet common channel 12 or the fuel outlet common channel 18. Two coolant outlet common channels 22 are provided on opposite side edges of the metal cathode plate 1 and the metal anode plate 5, respectively, and each coolant outlet common channel 22 is provided at a position on the side edge close to the oxidant outlet common channel 14 or the fuel inlet common channel 16. The coolant inlet common channel 20 and the coolant outlet common channel 22 which are communicated with each other are respectively arranged on two opposite side edges of the metal cathode plate 1 or the metal anode plate 5, a certain included angle is formed between the flow path of the coolant and the flow paths of the fuel and the oxidant respectively, the coolant can contact and exchange heat with the fuel and the oxidant at different positions through the conduction of the metal cathode and anode plates, and the temperature adjusting effect is good. Compared with the existing structure that the coolant inlet and the coolant outlet are arranged between the fuel inlet and the fuel outlet and the oxidant inlet and the oxidant outlet, the coolant in the embodiment can exchange heat with the fuel and the oxidant at different positions, and the temperature adjusting effect is better; compared with the existing structure with only one pair of coolant inlets and outlets, the coolant flow in the embodiment is larger, and the temperature adjusting efficiency is higher.
The cathode sealing member 2 and the anode sealing member 4 are integrally formed by materials such as silicon rubber or ethylene propylene diene monomer. The groove position of the non-active area on the cathode sealing member 2 corresponding to the metal cathode plate 1 forms a convex structure to fill the groove, and the groove position of the non-active area on the anode sealing member 4 corresponding to the metal anode plate 5 forms a convex structure to fill the groove, so that the single cell structure is more compact, and the sealing effect is better.
The metal cathode plate 1 and the metal anode plate 5 are stamped and formed of 316L stainless steel or titanium alloy.
The metal cathode plate 1 is provided with an oxidant distribution structure 10 and an oxidant flow field structure 11, wherein the oxidant distribution structure 10 is used for balancing the flow rate and the flow resistance of an oxidant, so that the oxidant is distributed more uniformly; the oxidant flow field structure 11 is used to circulate oxidant and in this region the oxidant reacts with the fuel across the membrane electrode 3 to produce electrical energy.
The metal anode plate 5 is provided with a fuel distribution structure 27 and a fuel flow field structure 28, wherein the fuel distribution structure 27 is used for balancing fuel flow and flow resistance, so that fuel distribution is more uniform; the fuel flow field structure 28 is used to flow fuel through and in this region the fuel reacts with oxidant across the membrane electrode 3 to produce electrical energy.
As shown in fig. 7, the thickness of the central portion 31 of the membrane electrode 3 is greater than the thickness at the edge 32. The middle part 31 corresponds to the positions of the through holes in the middle parts of the cathode sealing element 2 and the anode sealing element 4, and the thickened structure can avoid the problem that the membrane electrode 3 is damaged due to the long-time reaction of fuel and oxidant; the edge 32 is thinner, so that the processing material consumption is reduced, the processing cost is reduced, and the whole weight and volume of the single-tank structure are reduced.
It should be noted that the foregoing is only a preferred embodiment of the present invention and the technical principles applied. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail with reference to the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the scope of the present invention.
Claims (9)
1. A single cell structure of a metal plate fuel cell with long service life and reliability comprises a metal cathode plate (1), a cathode sealing piece (2), a membrane electrode (3), an anode sealing piece (4) and a metal anode plate (5) which are arranged in sequence, an oxidant inlet common channel (12) and a fuel outlet common channel (18) are respectively arranged on one side end of the metal cathode plate (1) and one side end of the metal anode plate (5), an oxidant outlet common channel (14) and a fuel inlet common channel (16) are respectively arranged on the other side end of the metal cathode plate and the metal anode plate, a coolant cavity (8) is formed between the metal cathode plate (1) and the metal anode plate (5), an oxidant cavity (6) is formed between the metal cathode plate (1) and the membrane electrode (3), a fuel cavity (7) is formed between the metal anode plate (5) and the membrane electrode (3); characterized in that at least one set of common coolant inlet (20) and common coolant outlet (22) channels is provided on the sides of the metallic cathode plate (1) and the metallic anode plate (5), the common coolant inlet (20) and common coolant outlet (22) channels being in communication with each other being provided on opposite sides of the metallic cathode plate (1) or the metallic anode plate (5), respectively.
2. The long-life and reliable metal plate fuel cell structure according to claim 1, wherein two said coolant inlet common channels (20) are provided on opposite sides of said metal cathode plate (1) and said metal anode plate (5), respectively, each said coolant inlet common channel (20) being provided at a position on a side close to said oxidant inlet common channel (12) or said fuel outlet common channel (18); and/or the presence of a gas in the gas,
two of the coolant outlet common channels (22) are provided on opposite sides of the metallic cathode plate (1) and the metallic anode plate (5), respectively, and each of the coolant outlet common channels (22) is provided at a position on a side close to the oxidant outlet common channel (14) or the fuel inlet common channel (16).
3. The long life and reliability metal plate fuel cell structure according to claim 1, wherein the thickness of the middle portion (31) of the membrane electrode (3) is larger than the thickness at the edge (32).
4. The long life and reliability metal plate fuel cell structure according to any of claims 1 to 3, wherein the cathode seal (2) and/or the anode seal (4) are integrally formed of silicon rubber or ethylene propylene diene rubber.
5. The long life and reliability metal plate fuel cell structure according to any of claims 1 to 3, wherein a convex structure is formed on the cathode seal (2) at a position corresponding to a groove on the metal cathode plate (1) and/or a convex structure is formed on the anode seal (4) at a position corresponding to a groove on the metal anode plate (5), the convex structure being capable of fitting into the groove.
6. The long life and reliability metal plate fuel cell structure according to any of claims 1 to 3, wherein the metal cathode plate (1) and/or the metal anode plate (5) is stamped from 316L stainless steel or titanium alloy.
7. The long life and reliability metal plate fuel cell structure according to any of claims 1 to 3, wherein an oxidant distribution structure (10) for balancing oxidant flow and flow resistance and an oxidant flow field structure (11) for circulating oxidant are provided on the metal cathode plate (1).
8. The long life and reliability metal plate fuel cell structure according to any one of claims 1 to 3, wherein a fuel distribution structure (27) for balancing fuel flow and flow resistance and a fuel flow field structure (28) for circulating fuel are provided on the metal anode plate (5).
9. An electric stack, characterized in that it comprises a plurality of metal plate fuel cell structures according to any one of claims 1 to 8 arranged in sequence, the metal cathode plates (1) and the metal anode plates (5) of two adjacent cell structures being welded to form a metal bipolar plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201920984399.XU CN209929408U (en) | 2019-06-27 | 2019-06-27 | Metal plate fuel cell single cell structure with long service life and reliability and electric pile |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201920984399.XU CN209929408U (en) | 2019-06-27 | 2019-06-27 | Metal plate fuel cell single cell structure with long service life and reliability and electric pile |
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| CN209929408U true CN209929408U (en) | 2020-01-10 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110265686A (en) * | 2019-06-27 | 2019-09-20 | 上海骥翀氢能科技有限公司 | The metal plate fuel battery list pool structure and pile of long-life and reliability |
| CN111816897A (en) * | 2020-07-22 | 2020-10-23 | 上海骥翀氢能科技有限公司 | Fuel cell stack performance detection method |
| CN113948734A (en) * | 2021-10-16 | 2022-01-18 | 素水新材料(上海)有限公司 | Fuel cell stack |
-
2019
- 2019-06-27 CN CN201920984399.XU patent/CN209929408U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110265686A (en) * | 2019-06-27 | 2019-09-20 | 上海骥翀氢能科技有限公司 | The metal plate fuel battery list pool structure and pile of long-life and reliability |
| CN110265686B (en) * | 2019-06-27 | 2024-02-20 | 上海骥翀氢能科技有限公司 | Metal plate fuel cell single cell structure with long service life and reliability and electric pile |
| CN111816897A (en) * | 2020-07-22 | 2020-10-23 | 上海骥翀氢能科技有限公司 | Fuel cell stack performance detection method |
| CN113948734A (en) * | 2021-10-16 | 2022-01-18 | 素水新材料(上海)有限公司 | Fuel cell stack |
| CN113948734B (en) * | 2021-10-16 | 2023-10-13 | 素水新材料(上海)有限公司 | fuel cell stack |
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Effective date of registration: 20210811 Address after: 215600 No. 1202, Fuxin Road, yangshe Town, Zhangjiagang City, Suzhou City, Jiangsu Province Patentee after: Jiangsu Jiyu Hydrogen Energy Technology Co.,Ltd. Address before: 201803 room 1003, 1st floor, 1555 Jingyuan Road, Jiading District, Shanghai Patentee before: Shanghai Jiyi Hydrogen Energy Technology Co.,Ltd. |