CN111969236A - Device and method for fastening proton exchange membrane fuel cell stack binding band - Google Patents
Device and method for fastening proton exchange membrane fuel cell stack binding band Download PDFInfo
- Publication number
- CN111969236A CN111969236A CN202010887648.0A CN202010887648A CN111969236A CN 111969236 A CN111969236 A CN 111969236A CN 202010887648 A CN202010887648 A CN 202010887648A CN 111969236 A CN111969236 A CN 111969236A
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- Prior art keywords
- end plate
- welding
- fuel cell
- cell stack
- packing
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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
- H01M8/2404—Processes or apparatus for grouping fuel cells
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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
- H01M8/247—Arrangements for tightening a stack, for accommodation of a stack in a tank or for assembling different tanks
- H01M8/248—Means for compression of the fuel cell stacks
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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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- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
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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 device and a method for fastening a binding band of a proton exchange membrane fuel cell stack, which comprises an upper end plate, a lower end plate and a packing band, wherein the fuel cell stack is positioned between the upper end plate and the lower end plate, the packing band bypasses the upper end plate, the fuel cell stack and the lower end plate to be welded and fastened, the device also comprises a welding block, the welding block is connected with the lower end plate through a connecting screw, and two ends of the packing band are welded and connected with the welding block.
Description
Technical Field
The invention belongs to the technical field of fuel cells, and particularly relates to a device and a method for fastening a proton exchange membrane fuel cell stack binding band.
Background
A fuel cell is a chemical device that directly converts chemical energy of fuel into electrical energy, and is also called an electrochemical generator. The main application in the transportation field at present is proton exchange membrane fuel cells. Each typical fuel cell unit is capable of producing about 0.6 to 1V, and a certain number of the cells are stacked together to produce a high voltage to form a fuel cell stack. In order to ensure the sealing performance and the electrical performance of the galvanic pile, the galvanic pile needs to adopt a certain means to keep the galvanic pile in a fastened state.
Currently, the fuel cell stack is fastened by bolts/screws or straps. For the galvanic pile with the fastened binding band, bolts are mostly adopted for fixing the tail end at present, the fixing mode is mainly implemented manually in the production process, and the operation mode is not suitable for large-scale automatic production. The process requirements of large-scale automatic production are not fully considered in other existing packaging modes.
Disclosure of Invention
The technical problem to be solved by the invention is to provide a device and a method for fastening a proton exchange membrane fuel cell stack binding band, aiming at the existing problems, the device for fastening the binding band by utilizing the welding and packaging binding band has the advantages of simple structure, strong compatibility for different sizes of electric stacks and different binding band materials, realization by a full-automatic mode, and potential of large-batch mass production and high-flexibility production.
The technical scheme adopted by the invention for solving the technical problems is as follows: a device for fastening a proton exchange membrane fuel cell stack binding band is characterized by comprising an upper end plate, a lower end plate and a packing band, wherein the fuel cell stack is positioned between the upper end plate and the lower end plate, and the packing band is welded and fastened with the lower end plate by bypassing the upper end plate and the fuel cell stack.
According to the scheme, the packaging belt further comprises a welding block, the welding block is connected with the lower end plate through a connecting screw, and two ends of the packaging belt are connected with the welding block in a welding mode.
According to the scheme, the lower end plate is provided with the mounting groove, and the welding block is embedded in the mounting groove.
According to the scheme, the upper end plate is provided with a limiting groove, and the packing belt is clamped into the limiting groove for positioning.
According to the scheme, the material of the lower end plate or the welding block is matched with the material of the welding area of the packing belt in a welding mode.
According to the scheme, the packing belt is made of a high polymer material, a fiber-based composite material, a laminated material, carbon fibers, natural fibers or a metal material.
According to the scheme, the welding mode is gas flame welding, arc welding, laser welding, electron beam welding, friction welding or ultrasonic welding.
A proton exchange membrane fuel cell stack binding band fastening method is characterized by comprising the following steps: the whole galvanic pile is walked around respectively from the upper end plate outside in the packing area, and the packing area part inlays and locates the spacing inslot, and the both ends of packing area and the both ends in close contact with of lower end plate or welding piece link to each other through the welding, realize the function of packing.
The invention has the beneficial effects that: the utility model provides a proton exchange membrane fuel cell piles device and method that bandage was fastened, fuel cell group is fixed in between upper end plate and the lower end plate, the one end of packing area and the left side welding of welding piece, the other end of packing area is walked around fuel cell group and upper end plate or lower end plate after the right side welding of welding piece, so when packing battery pile, weld twice to the both ends of packing area, alright accomplish the packing process, compare the mode of packing through rotatory screw, efficiency is higher, can be applied to in the large-scale production of batch.
Drawings
FIG. 1 is a schematic view of weld fastening of one embodiment of the present invention.
Fig. 2 is a schematic structural diagram of a solder bump according to an embodiment of the present invention.
Fig. 3 is a schematic structural view of a limiting groove according to an embodiment of the present invention.
Detailed Description
For a better understanding of the present invention, reference is made to the following description taken in conjunction with the accompanying drawings and examples.
As shown in fig. 1-3, a fastening device for proton exchange membrane fuel cell stack straps comprises an upper end plate 1, a lower end plate 2 and a strapping band 3, wherein a fuel cell stack 7 is positioned between the upper end plate and the lower end plate, and the strapping band is welded and fastened with the lower end plate by bypassing the upper end plate and the fuel cell stack.
The packaging belt is characterized by further comprising a welding block 4, the welding block is connected with the lower end plate through a connecting screw 5, and two ends of the packaging belt are connected with the welding block in a welding mode. The lower end plate is provided with a mounting groove, and the welding block is embedded in the mounting groove.
The upper end plate is provided with a limiting groove 6, and the packing belt is clamped into the limiting groove for positioning, so that the deviation is avoided.
The material of the lower end plate or the welding block is matched with the material of the welding area of the packing belt in a welding mode, and the packing belt has the capability of being welded together. The weld block may be a separate weld block mounted to the upper or lower end plate, or the upper or lower end plate itself. When the welding block is arranged, the lower end plate
The material of the strapping band includes but is not limited to high polymer material, fiber-based composite material, laminated material, carbon fiber, natural fiber, stainless steel, other metal material containing surface treatment, etc., and the strapping band has the capability of welding with the welding block in the target welding area; the number of the packing straps can be changed according to different designs of the fuel cell stack, and is usually 2-8. .
Welding means include, but are not limited to, gas flame, electric arc, laser, electron beam, friction, ultrasonic, and the like.
Example one
The bipolar plate of the fuel cell stack of this embodiment is made of 316L stainless steel, the MEA of the fuel cell stack of this embodiment uses a proton exchange membrane, and both ends of the fuel cell stack respectively include an upper insulating plate, a lower insulating plate, an upper current collecting plate, and a lower current collecting plate. In the embodiment, the upper end plate and the lower end plate are made of aluminum alloy materials; the number of the welding blocks is four, namely 304 stainless steel; the bandage is a 304 stainless steel band with the thickness of 0.5mm and the width of 28mm, and the total number of the bandage is four.
The fuel cell stack is stacked together in order according to upper end plate, fuel cell group, lower end plate, four welding pieces, and the welding piece passes through fastening bolt and fixes on the lower end plate, and whole pile is walked around from the upper end plate outside respectively to four packing areas to with the both ends in close contact with of welding piece. The packing belt and the welding block are welded together through a laser welding machine, and the packing function is achieved.
The invention mainly adopts the mode of directly welding the packing belt with the assembly for fastening the lower end plate and the welding block or the lower end plate together to pack and fasten the fuel cell stack, the packing method can be convenient for the packing design of automatic production to a great extent, the automatic implementation process is simple, the occupied time is short, and the packing process problem during mass production of the stack can be solved.
Claims (8)
1. A device for fastening a proton exchange membrane fuel cell stack binding band is characterized by comprising an upper end plate, a lower end plate and a packing band, wherein the fuel cell stack is positioned between the upper end plate and the lower end plate, and the packing band is welded and fastened with the lower end plate by bypassing the upper end plate and the fuel cell stack.
2. The PEM fuel cell stack strap fastening device according to claim 1, further comprising a welding block connected to said lower end plate by a connecting screw, wherein both ends of said strapping band are welded to said welding block.
3. The PEM fuel cell stack strap fastening device according to claim 2, wherein said lower end plate is provided with a mounting groove, and said welding block is embedded in said mounting groove.
4. The device for fastening the proton exchange membrane fuel cell stack binding band according to claim 2 or 3, wherein a limiting groove is formed on the upper end plate, and the packing band is clamped into the limiting groove.
5. The pem fuel cell stack strap fastening device of claim 4, wherein said lower end plate or welding block is made of a material that is welded to match the material of the welding zone of said strapping band.
6. The PEM fuel cell stack strap fastening device of claim 5, wherein said strapping strap is made of a high polymer material, a fiber-based composite material, a laminate material, a carbon fiber, a natural fiber or a metal material.
7. The pem fuel cell stack strap fastening device of claim 6, wherein said welding means is gas flame welding, arc welding, laser welding, electron beam welding, friction welding, or ultrasonic welding.
8. The method for fastening proton exchange membrane fuel cell stack straps as claimed in claim 7, comprising the steps of: the whole galvanic pile is walked around respectively from the upper end plate outside in the packing area, and the packing area part inlays and locates the spacing inslot, and the both ends of packing area and the both ends in close contact with of lower end plate or welding piece link to each other through the welding, realize the function of packing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010887648.0A CN111969236A (en) | 2020-08-28 | 2020-08-28 | Device and method for fastening proton exchange membrane fuel cell stack binding band |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010887648.0A CN111969236A (en) | 2020-08-28 | 2020-08-28 | Device and method for fastening proton exchange membrane fuel cell stack binding band |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111969236A true CN111969236A (en) | 2020-11-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010887648.0A Pending CN111969236A (en) | 2020-08-28 | 2020-08-28 | Device and method for fastening proton exchange membrane fuel cell stack binding band |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN205692910U (en) * | 2016-06-24 | 2016-11-16 | 苏州弗尔赛能源科技股份有限公司 | A kind of pem fuel cell stack steel band clamp device |
| CN207800768U (en) * | 2018-01-16 | 2018-08-31 | 广东国鸿氢能科技有限公司 | A kind of fuel cell pile |
| CN208835193U (en) * | 2018-09-30 | 2019-05-07 | 北京新研创能科技有限公司 | A kind of fastening structure and fuel cell pack for fuel cell pack |
| CN110649305A (en) * | 2019-09-20 | 2020-01-03 | 河北清清电池有限公司 | Method and apparatus for fuel cell stack assembly |
-
2020
- 2020-08-28 CN CN202010887648.0A patent/CN111969236A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN205692910U (en) * | 2016-06-24 | 2016-11-16 | 苏州弗尔赛能源科技股份有限公司 | A kind of pem fuel cell stack steel band clamp device |
| CN207800768U (en) * | 2018-01-16 | 2018-08-31 | 广东国鸿氢能科技有限公司 | A kind of fuel cell pile |
| CN208835193U (en) * | 2018-09-30 | 2019-05-07 | 北京新研创能科技有限公司 | A kind of fastening structure and fuel cell pack for fuel cell pack |
| CN110649305A (en) * | 2019-09-20 | 2020-01-03 | 河北清清电池有限公司 | Method and apparatus for fuel cell stack assembly |
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Application publication date: 20201120 |