CN114256478A - Cathode chamber air-tight structure of high-temperature solid oxide fuel cell - Google Patents
Cathode chamber air-tight structure of high-temperature solid oxide fuel cell Download PDFInfo
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- CN114256478A CN114256478A CN202011003416.0A CN202011003416A CN114256478A CN 114256478 A CN114256478 A CN 114256478A CN 202011003416 A CN202011003416 A CN 202011003416A CN 114256478 A CN114256478 A CN 114256478A
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- 239000000446 fuel Substances 0.000 title claims abstract description 33
- 239000007787 solid Substances 0.000 title claims abstract description 30
- 238000007789 sealing Methods 0.000 claims description 32
- 239000010445 mica Substances 0.000 claims description 26
- 229910052618 mica group Inorganic materials 0.000 claims description 26
- 239000000565 sealant Substances 0.000 claims description 19
- 238000013461 design Methods 0.000 abstract description 3
- 238000009434 installation Methods 0.000 abstract description 3
- 238000011160 research Methods 0.000 abstract description 3
- 239000007789 gas Substances 0.000 description 12
- 239000003292 glue Substances 0.000 description 6
- 230000000694 effects Effects 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000005056 compaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000003792 electrolyte Substances 0.000 description 1
- 239000002737 fuel gas Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
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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
- H01M8/24—Grouping of fuel cells, e.g. stacking of fuel cells
- H01M8/2465—Details of groupings of fuel cells
-
- 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
-
- 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
- H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
- H01M8/04298—Processes for controlling fuel cells or fuel cell systems
- H01M8/04313—Processes for controlling fuel cells or fuel cell systems characterised by the detection or assessment of variables; characterised by the detection or assessment of failure or abnormal function
- H01M8/0438—Pressure; Ambient pressure; Flow
- H01M8/04395—Pressure; Ambient pressure; Flow of cathode reactants at the inlet or inside the fuel cell
-
- 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
- H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
- H01M8/04298—Processes for controlling fuel cells or fuel cell systems
- H01M8/04313—Processes for controlling fuel cells or fuel cell systems characterised by the detection or assessment of variables; characterised by the detection or assessment of failure or abnormal function
- H01M8/0438—Pressure; Ambient pressure; Flow
- H01M8/04432—Pressure differences, e.g. between anode and cathode
-
- 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
- H01M8/10—Fuel cells with solid electrolytes
- H01M8/12—Fuel cells with solid electrolytes operating at high temperature, e.g. with stabilised ZrO2 electrolyte
- H01M8/1231—Fuel cells with solid electrolytes operating at high temperature, e.g. with stabilised ZrO2 electrolyte with both reactants being gaseous or vaporised
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/86—Inert electrodes with catalytic activity, e.g. for fuel cells
- H01M2004/8678—Inert electrodes with catalytic activity, e.g. for fuel cells characterised by the polarity
- H01M2004/8689—Positive electrodes
-
- 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
- H01M8/10—Fuel cells with solid electrolytes
- H01M8/12—Fuel cells with solid electrolytes operating at high temperature, e.g. with stabilised ZrO2 electrolyte
- H01M2008/1293—Fuel cells with solid oxide electrolytes
-
- 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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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Fuel Cell (AREA)
Abstract
The invention provides a high-temperature solid oxide fuel cell cathode chamber airtightness structure, which comprises: the gas inlet cavity and the gas outlet cavity are respectively arranged on two opposite sides of the galvanic pile, and the galvanic pile, the gas inlet cavity and the gas outlet cavity are hermetically arranged on the bottom plate; the edges of the outer surfaces of the air inlet cavity and the air outlet cavity opposite to the galvanic pile are respectively provided with a support lug, and every two support lugs opposite to each other on the air inlet cavity and the air outlet cavity are connected through a spring. The invention ensures that the air inlet cavity, the air outlet cavity and the galvanic pile are well sealed, the air quantity of the cathode measured on the pipeline can more truly reflect the actual air quantity of the galvanic pile, the pressure drop of the galvanic pile under different air quantities can be more accurately tested, the real data can be obtained, a reasonable data base is provided for the system design and the theoretical research of the galvanic pile, and the energy of the system can not be wasted. The invention has simple structure and convenient installation, and can not bring difficulty to repeated use.
Description
Technical Field
The invention relates to the field of fuel cell power generation, in particular to a high-temperature solid oxide fuel cell, a single or multiple electric stacks in an air open form and an air-tight structure of an air cathode chamber.
Background
The solid oxide fuel cell consists of an anode, a cathode and an electrolyte, wherein the anode is fuel gas and is connected and sealed by adopting a pipeline for supplying gas; the cathode is typically air or an oxidizing gas containing air. For the galvanic pile with open cathode air, in order to supply air to the cathode better and more stably, air distribution chambers are generally arranged at the inlet and the outlet of the cathode, and the air distribution chambers are respectively connected with an air inlet pipe and an air outlet pipe.
The solid oxide fuel cell stack is assembled with the air distribution cavity on site when in use, and the air distribution cavity is placed after the stack is fixed on the platform in sequence, so that the air tightness between the air distribution cavity and the stack is very important in the process, and the air has the advantages that for the stack with an open air side: sufficient volume, inexpensive price and more importantly no risk after leakage. However, as a test system, air leakage is disadvantageous for obtaining data of a real air amount, a real oxygen utilization rate, and data are also unreferenced, and moreover, the gas is heated before entering the stack, and if the heated gas leaks from a space between the distribution chamber and the stack, energy is wasted. If there is an air leak, this indicates that the pressure is not substantially maintained, and the measured inlet pressure does not reflect the actual situation.
In order to solve the sealing problem, high-temperature sealant is usually coated between the cavity and the stack to achieve the sealing effect. However, the high-temperature glue is often adhered to the galvanic pile after operation, and due to some characteristics of the galvanic pile, such as incapability of strong collision and rubbing, incapability of cleaning by using a chemical solvent, and the like, the high-temperature glue adhered to the galvanic pile is not well treated, and certain difficulty is brought to next sealing.
In addition, the existing fuel cell stack sealing structure is distributed between bipolar plates and monocells which are arranged in a crossed mode, and sealing rings which are arranged between the bipolar plates and the monocells in the crossed mode and sealing grooves which are matched with the sealing rings are arranged on the bipolar plates. The structure improves the sealing performance of the galvanic pile by changing the structure of the bipolar plate and the structure of the sealing ring, solves the problem that the large-scale mechanization and automation of the galvanic pile cannot be realized due to the plane direct sealing, and provides a solution for improving the output performance of the galvanic pile and large-scale application. However, the structure also has technical defects, particularly, due to the problem of the material of the sealing ring, the scheme is more suitable for a low-temperature fuel cell system, and for a temperature solid oxide fuel cell, no suitable sealing ring is available on the market, but a lot of high-temperature sealing glue is available. And the sealing ring in the structure is more suitable for being used in a structure with two sections of compaction, and the structure can not meet the sealing requirement if a system with a galvanic pile and a gas distribution cavity which are horizontally placed is adopted.
In view of the above, the present invention provides a cathode chamber gas-tight structure of a high temperature solid oxide fuel cell, which adopts a mechanical sealing means to solve the above technical problems.
Disclosure of Invention
The invention aims to provide a cathode chamber air tightness structure of a high-temperature solid oxide fuel cell, which solves the problems of air leakage of a cathode of a galvanic pile and inaccurate measured air quantity and pressure.
In order to achieve the above object, the present invention provides an airtight structure for a cathode chamber of a high temperature solid oxide fuel cell, comprising: a galvanic pile, an air inlet chamber, an air outlet chamber, a bottom plate, a support lug and a spring,
the gas inlet cavity and the gas outlet cavity are respectively arranged on two opposite sides of the galvanic pile, and the galvanic pile, the gas inlet cavity and the gas outlet cavity are hermetically arranged on the bottom plate;
the edge of the outer surface of the air inlet cavity, the outer surface of the air outlet cavity and the outer surface of the electric pile are respectively provided with a support lug, and every two support lugs opposite to each other on the air inlet cavity and the air outlet cavity are connected through a spring.
The cathode chamber air tightness structure of the high-temperature solid oxide fuel cell is characterized in that a groove is formed in the bottom plate and used for placing the air inlet chamber and the air outlet chamber.
The cathode cavity air-tight structure of the high-temperature solid oxide fuel cell is characterized in that sealing pieces are respectively arranged between the groove and the air inlet cavity and between the groove and the air outlet cavity.
The cathode chamber air tightness structure of the high-temperature solid oxide fuel cell is characterized in that insulating mica is arranged between the groove and the bottom edge of the air inlet chamber, and high-temperature sealing glue is coated on two sides of the insulating mica.
The cathode chamber air tightness structure of the high-temperature solid oxide fuel cell is characterized in that insulating mica is arranged between the air inlet chamber and the galvanic pile, the insulating mica is coated with high-temperature sealant only on the side close to the air inlet chamber, and the side in contact with the galvanic pile is not coated with the high-temperature sealant.
The cathode chamber air tightness structure of the high-temperature solid oxide fuel cell is characterized in that insulating mica is arranged between the groove and the bottom edge of the air outlet chamber, and high-temperature sealing glue is coated on two sides of the insulating mica.
The cathode chamber air tightness structure of the high-temperature solid oxide fuel cell is characterized in that insulating mica is arranged between the gas outlet chamber and the galvanic pile, the insulating mica is coated with high-temperature sealant only on the side close to the gas outlet chamber, and the side in contact with the galvanic pile is not coated with the high-temperature sealant.
The cathode cavity air-tight structure of the high-temperature solid oxide fuel cell is characterized in that the support lugs on the air inlet cavity are opposite to the support lugs on the air outlet cavity one by one.
The cathode chamber air-tight structure of the high-temperature solid oxide fuel cell is characterized in that a spring hole is formed in the support lug, and the spring penetrates through the spring hole and is fixed by a spring fixing nut.
The cathode cavity airtight structure of the high-temperature solid oxide fuel cell is characterized in that the groove is matched with the bottom edges of the air inlet cavity and the air outlet cavity. The invention has the beneficial effects that: the invention provides a mechanical sealing form, so that the air inlet cavity, the air outlet cavity and the galvanic pile are well sealed, the air quantity of the cathode measured on a pipeline can more truly reflect the actual air quantity entering the galvanic pile, the pressure drop of the galvanic pile under different air quantities can be more accurately tested, real data can be obtained, a reasonable data base is provided for the system design and theoretical research of the galvanic pile, and the energy of the system can not be wasted. The invention has simple structure and convenient installation, and can not bring difficulty to repeated use.
Drawings
Figure 1 is a front view of a gastight structure according to the invention;
figure 2 is a top view of a gas-tight structure according to the invention;
figure 3 is a side view of a gastight structure according to the invention
Detailed Description
In order to clearly illustrate the inventive content of the present invention, the present invention will be described below with reference to examples.
In the description of the present invention, it should be noted that the terms "upper", "lower", "horizontal", "vertical", "top", "bottom", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
As shown in fig. 1 to 3, there are respectively a front view, a plan view and a side view of the airtight structure of the present invention. In one embodiment, the present invention provides a high temperature solid oxide fuel cell cathode chamber gas-tight structure, which mainly comprises: the device comprises a galvanic pile 1, an air inlet cavity 2, an air outlet cavity 3, a bottom plate 4, a support lug 5 and a spring 6.
The bottom plate 4 is provided with a groove 41 for placing the air inlet cavity 2 and the air outlet cavity 3, in other words, the air inlet cavity 2 and the air outlet cavity 3 can be accurately positioned at two opposite sides of the electric pile 1 by means of the groove 41 of the bottom plate 4. In a preferred embodiment, the groove 41 is matched with the bottom edges of the inlet chamber 2 and the outlet chamber 3, and sealing members are arranged between the groove 41 and the inlet chamber 2, the groove 41 and the outlet chamber 3. In a preferred embodiment, the depth of the groove 41 is 5-10 mm, so that the air inlet chamber 2 and the air outlet chamber 3 are embedded into the groove 41 of the bottom plate 4, and the connection between the two is ensured to be stable. The groove is formed in the bottom plate, the bottom plate is sealed by high-temperature sealant, the sealing reliability is guaranteed, and the measured flow and pressure are more in line with the actual situation.
In a specific embodiment, a layer of insulating mica (not shown in the figure) is arranged between the groove 41 and the bottom edge of the air inlet chamber 2, and high-temperature sealant is coated on two sides of the insulating mica to maintain sealing. In addition, preferably, the upper edge of the air inlet chamber 2 is in contact with the upper end plate of the galvanic pile 1, a layer of insulating mica can be arranged between the upper edge and the lower edge, and high-temperature sealant is coated on two sides of the insulating mica to realize sealing. It should be noted that the insulating mica arranged between the air inlet chamber 2 and the stack 1 is coated with the high-temperature sealant only on the side close to the air inlet chamber 2, and the side in contact with the stack 1 is not coated with the high-temperature sealant.
Preferably, the intake chamber 2 is connected to an intake pipe (not shown) through an intake pipe interface 21, which may be, but not limited to, a screw thread or a flange.
In another embodiment, a layer of insulating mica (not shown) is disposed between the groove 41 and the bottom edge of the air outlet chamber 3, and high temperature sealant is coated on both sides of the insulating mica to maintain the sealing. In addition, the upper edge of the air outlet cavity 2 is contacted with the upper end plate of the galvanic pile 1, a layer of insulating mica can be arranged between the air outlet cavity and the upper end plate, and high-temperature sealant is coated on two sides of the insulating mica to realize sealing. It should be noted that the insulating mica arranged between the air outlet chamber 3 and the stack 1 is coated with the high-temperature sealant only on the side close to the air inlet chamber 2, and the side contacting with the stack 1 is not coated with the high-temperature sealant.
Preferably, the outlet chamber 3 is connected to an outlet pipe (not shown) through an outlet pipe interface 31, and the connection manner may be a thread or a flange, but is not limited thereto. The air inlet and outlet are not limited to the positions shown in the figures, and can be arranged at any suitable position on the air cavity wall, and can also be communicated into the cavity from the bottom plate, and the sealing effect of the cavity is not influenced.
In a preferred embodiment, the four corners of the outer surfaces of the air inlet chamber 2 and the air outlet chamber 3 opposite to the stack 1 are respectively provided with a convex support lug 5, the support lugs 5 on the air inlet chamber 2 are opposite to the support lugs 5 on the air outlet chamber 3 one by one, and every two opposite support lugs 5 on the air inlet chamber 2 and the air outlet chamber 3 are connected and fastened through a spring (such as a constant force spring) 6, so that the spring 6 stretches or contracts in the horizontal direction. The spring 6 properly fastens the galvanic pile 1 at normal temperature, when the temperature rises during operation, the galvanic pile 1 and the accessory materials expand to a certain extent, and the spring 6 stretches to a certain extent along with the expansion of the materials to continuously fasten and seal the galvanic pile 1, the air inlet cavity 2 and the air outlet cavity 3. The constant force spring is used for gas sealing on the galvanic pile with open air, so that the sealing problem of the cathode chamber is solved, and the problem that the galvanic pile is coated with glue and is more difficult to reuse for sealing is avoided.
Further, a spring hole 61 is formed in the support lug 5, and the spring 6 passes through the spring hole 61 and is fixed by a spring fixing nut 62.
Compared with the prior art, the invention has the beneficial technical effects that: the invention provides a mechanical sealing form, so that the air inlet cavity, the air outlet cavity and the galvanic pile are well sealed, the air quantity of the cathode measured on a pipeline can more truly reflect the actual air quantity entering the galvanic pile, the pressure drop of the galvanic pile under different air quantities can be more accurately tested, real data can be obtained, a reasonable data base is provided for the system design and theoretical research of the galvanic pile, and the energy of the system can not be wasted. The invention has simple structure and convenient installation, and can not bring difficulty to repeated use.
While the invention has been described with reference to a preferred embodiment, various modifications may be made and equivalents may be substituted for elements thereof without departing from the scope of the invention. In particular, the technical features mentioned in the embodiments can be combined in any way as long as there is no structural conflict. It is intended that the invention not be limited to the particular embodiments disclosed, but that the invention will include all embodiments falling within the scope of the appended claims.
Claims (10)
1. A high temperature solid oxide fuel cell cathode chamber gas-tight structure, comprising: a galvanic pile, an air inlet chamber, an air outlet chamber, a bottom plate, a support lug and a spring,
the gas inlet cavity and the gas outlet cavity are respectively arranged on two opposite sides of the galvanic pile, and the galvanic pile, the gas inlet cavity and the gas outlet cavity are hermetically arranged on the bottom plate;
the edge of the outer surface of the air inlet cavity, the outer surface of the air outlet cavity and the outer surface of the electric pile are respectively provided with a support lug, and every two support lugs opposite to each other on the air inlet cavity and the air outlet cavity are connected through a spring.
2. The high temperature solid oxide fuel cell cathode chamber gas-tight structure of claim 1, wherein the bottom plate is provided with grooves for placing the gas inlet chamber and the gas outlet chamber.
3. The high temperature solid oxide fuel cell cathode chamber gas-tight structure of claim 2, wherein a sealing member is respectively disposed between the groove and the gas inlet chamber and between the groove and the gas outlet chamber.
4. The hermetic structure of cathode chamber in solid oxide fuel cell as claimed in claim 3, wherein the groove is provided with insulating mica between the groove and the bottom edge of the air inlet chamber, and high temperature sealant is coated on both sides of the insulating mica.
5. The high temperature solid oxide fuel cell cathode chamber gas-tight structure according to any one of claims 1 to 4, wherein an insulating mica is disposed between the air inlet chamber and the stack, and the insulating mica is coated with the high temperature sealant only on the side close to the air inlet chamber and not on the side in contact with the stack.
6. The hermetic structure of cathode chamber in solid oxide fuel cell as claimed in claim 3, wherein the groove is provided with insulating mica between the bottom edge of the air outlet chamber and the groove, and high temperature sealant is coated on both sides of the insulating mica.
7. The high temperature solid oxide fuel cell cathode chamber airtightness structure according to any one of claims 1 to 3 and 6, wherein an insulating mica is disposed between the gas outlet chamber and the stack, and the insulating mica is coated with a high temperature sealant only on the side close to the gas outlet chamber, and is not coated with a high temperature sealant on the side in contact with the stack.
8. A high temperature solid oxide fuel cell cathode chamber gas-tight structure as claimed in any one of claims 1 to 3, wherein the lugs on the gas inlet chamber are opposite to the lugs on the gas outlet chamber one by one.
9. A high temperature solid oxide fuel cell cathode chamber gas-tight structure according to any one of claims 1 to 3, wherein a spring hole is provided on the support lug, and the spring passes through the spring hole and is fixed by a spring fixing nut.
10. The high temperature solid oxide fuel cell cathode chamber gas-tight structure of claim 2 or 3, wherein the groove is coincident with the bottom edges of the gas inlet chamber and the gas outlet chamber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011003416.0A CN114256478A (en) | 2020-09-22 | 2020-09-22 | Cathode chamber air-tight structure of high-temperature solid oxide fuel cell |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011003416.0A CN114256478A (en) | 2020-09-22 | 2020-09-22 | Cathode chamber air-tight structure of high-temperature solid oxide fuel cell |
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| CN114256478A true CN114256478A (en) | 2022-03-29 |
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| CN202011003416.0A Pending CN114256478A (en) | 2020-09-22 | 2020-09-22 | Cathode chamber air-tight structure of high-temperature solid oxide fuel cell |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103779515A (en) * | 2014-01-13 | 2014-05-07 | 江苏绿遥燃料电池系统制造有限公司 | Fuel cell sealing material and preparation method thereof |
| EP2982529A1 (en) * | 2014-08-09 | 2016-02-10 | MAN Truck & Bus AG | Pneumatic support for a pneumaticcaly supported axle of a commercial vehicle |
| CN106602119A (en) * | 2016-12-30 | 2017-04-26 | 华中科技大学 | Self-tightening outer flow cavity solid oxide fuel cell stack |
| CN108088403A (en) * | 2018-01-29 | 2018-05-29 | 四川行之智汇知识产权运营有限公司 | Bogey applied to measurement of curved surface ruler |
-
2020
- 2020-09-22 CN CN202011003416.0A patent/CN114256478A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103779515A (en) * | 2014-01-13 | 2014-05-07 | 江苏绿遥燃料电池系统制造有限公司 | Fuel cell sealing material and preparation method thereof |
| EP2982529A1 (en) * | 2014-08-09 | 2016-02-10 | MAN Truck & Bus AG | Pneumatic support for a pneumaticcaly supported axle of a commercial vehicle |
| CN106602119A (en) * | 2016-12-30 | 2017-04-26 | 华中科技大学 | Self-tightening outer flow cavity solid oxide fuel cell stack |
| CN108088403A (en) * | 2018-01-29 | 2018-05-29 | 四川行之智汇知识产权运营有限公司 | Bogey applied to measurement of curved surface ruler |
Non-Patent Citations (1)
| Title |
|---|
| （美）希格利等: "《机械设计通用手册》", 31 August 1993, 机械工业出版社, pages: 781 - 782 * |
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