CN112259774B - Device for independently inspecting and replacing bipolar plates in galvanic pile and membrane electrode assemblies wrapped by bipolar plates and application method - Google Patents
Device for independently inspecting and replacing bipolar plates in galvanic pile and membrane electrode assemblies wrapped by bipolar plates and application method Download PDFInfo
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- CN112259774B CN112259774B CN202011255480.8A CN202011255480A CN112259774B CN 112259774 B CN112259774 B CN 112259774B CN 202011255480 A CN202011255480 A CN 202011255480A CN 112259774 B CN112259774 B CN 112259774B
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/24—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
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M3/00—Investigating fluid-tightness of structures
- G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
-
- 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
-
- 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
-
- 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
- H01M8/241—Grouping of fuel cells, e.g. stacking of fuel cells with solid or matrix-supported electrolytes
-
- 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
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/30—Hydrogen technology
- Y02E60/50—Fuel cells
Abstract
The invention discloses a device for independently inspecting and replacing bipolar plates in a galvanic pile and a membrane electrode assembly wrapped by the bipolar plates and a use method thereof, and belongs to the field of electrochemistry. The top of the bipolar plate in the electric pile is provided with a handle, the bottoms of the side surfaces of the two sides of the bipolar plate in the electric pile are respectively provided with a stud, the studs are provided with through holes and holes, the end plates of the two sides of the electric pile are provided with slide ways, the slide ways are provided with slide blocks, a swing arm is arranged between every two adjacent slide blocks, and the studs are positioned under the rectangular frame structure; the through hole bolt penetrates through the through hole to be fixedly connected with the non-overhauling bipolar plate; the hole bolt is screwed into the hole through the swing arm, the swing arm is fixedly connected with the stud on the bipolar plate which is wrapped with the membrane electrode to be tested through the hole bolt, and the bipolar plate which is wrapped with the membrane electrode to be tested is taken out by pushing the stud towards the handle direction. The invention aims to solve the problems that the membrane components which need to be checked or replaced cannot be taken out without removing the stack at present, and the like.
Description
Technical Field
The invention belongs to the field of electrochemistry, and particularly relates to a device for independently inspecting and replacing bipolar plates in a galvanic pile and a membrane electrode assembly wrapped by the bipolar plates and a use method thereof.
Background
The fuel cell is an electrochemical converter. The hydrogen (or energy source containing hydrogen) and oxygen are directly converted into electrical energy. The fuel cell of the invention of William, robert, grosvenor (Sir William Robert Grove) in 1839 produces electricity efficiently by an electrochemical process that does not burn, and importantly, does not emit when in useCO 2 . Proton Exchange Membrane Fuel Cells (PEMFCs) that contain hydrogen fuel are considered to be the most promising alternative energy source in a variety of applications. Hydrogen Fuel Cells (HFC) become very attractive, especially for automotive applications, due to their low noise, low operating temperature and high power density advantages. Due to the urgent need to find low-carbon ways for human energy in the future, many countries are pushing the deployment of hydrogen technology and hydrogen fuel cells, not only for transportation, but also for storing excessive renewable energy from wind and solar farms.
Proton Exchange Membrane Fuel Cells (PEMFC) are typically designed as a stack structure in which a number of cells are clamped together by end plates. However, stacking presents great difficulties in evaluating the performance of the stack assembly. The membrane component is easy to corrode and easily damaged, and is the most needed part to be inspected and replaced in the electric pile, but the current structural design cannot effectively and independently inspect and replace the electric pile component.
Disclosure of Invention
The invention aims to provide a device for independently inspecting and replacing bipolar plates in a galvanic pile and a membrane electrode assembly clamped by the bipolar plates and a use method thereof, and aims to solve the problem that the galvanic pile assembly is difficult to independently inspect in the existing stacking design method. The device can be used for independently inspecting the fuel cell stack assembly.
In order to achieve the aim, the invention provides a device for independently inspecting and replacing a bipolar plate and a membrane electrode assembly wrapped by the bipolar plate in a galvanic pile, wherein the top of the bipolar plate in the galvanic pile is provided with a handle, the bottoms of the side surfaces of the two sides of the bipolar plate in the galvanic pile are respectively provided with a stud, the studs and the bipolar plate are on the same horizontal plane, through holes and holes are formed in the studs, the through holes are perpendicular to the horizontal plane where the studs and the bipolar plate are positioned and penetrate through the studs, and the holes are perpendicular to the thickness surface of the studs and do not penetrate through the studs; the thickness surfaces of the side surfaces of the end plates at two sides of the galvanic pile are provided with slide ways, the slide ways protrude out of the plane where the galvanic pile is positioned, a sliding block is arranged on the slide ways, a swing arm is arranged between two adjacent sliding blocks, the swing arm is of a rectangular frame structure, a stud is positioned right below the rectangular frame structure, the stud is far away from the bipolar plate, and a surface parallel to the thickness surface of the bipolar plate is tangent to the swing arm or has a certain gap; the through hole bolt penetrates through the through hole to be fixedly connected with the non-overhauling bipolar plate; the hole bolt is screwed into the hole through the swing arm, and the swing arm and the stud on the bipolar plate which is wrapped and clamped with the membrane electrode to be tested are fixedly connected through the detachable hole bolt, and the bipolar plate which is wrapped and clamped with the membrane electrode to be tested is taken out by pushing the stud towards the lifting handle direction.
Further, in the above technical scheme, the slide way and the sliding block form a slide way device, and 2 or 4 slide way devices are arranged on the device.
Further, in the above technical scheme, the sliding rail device is detachably connected with the pile end plate, and the swing arm is detachably connected with the sliding block.
Further, in the above technical scheme, a sealing gasket is arranged between two adjacent bipolar plates in the galvanic pile.
Further, in the technical scheme, the dynamic load of the sliding block is 1-300kN.
Further, in the above technical solution, the gap is not greater than 1cm.
Further, in the above technical scheme, the materials of the slider, the slide way and the swing arm include plastics, wood, alloy or metal.
Further, in the above technical solution, the plastic includes PET, HDPE, PVC, LDPE, PP, PS, PC, PHA, PLA, PCL, PBS, PBSA; the alloy comprises spheroidal graphite cast iron, manganese steel, stainless steel, brass, bronze, white copper, soldering tin and hard aluminum; the metal comprises steel, copper, aluminum, lead and titanium.
Further, in the above technical scheme, the gasket is made of neoprene, natural rubber, butyl cyanide rubber, chlorosulfonated polyethylene synthetic rubber, silicone rubber, ethylene propylene rubber, fluororubber, polytetrafluoroethylene, polypropylene, polyethylene, polyvinyl chloride, polyamide, polycarbonate, polyethylene terephthalate, polymethyl methacrylate, polyamide resin or polybutylene terephthalate.
Preferably, the length of the slideway ranges from 1cm to 100cm, the width of the slideway ranges from 1cm to 10cm, the length of the swing arm ranges from 1cm to 150cm, the width of the swing arm ranges from 1cm to 10cm, the length of the stud ranges from 1cm to 10cm, the width of the stud ranges from 1cm to 1.5cm, the height of the stud ranges from 1cm to 1.5cm, the diameters of the hole (6) and the hole (9) range from 1cm to 1.5cm, the vertical depth of the hole (6) ranges from 1cm to 10cm, and the vertical depth of the hole (9) ranges from 1cm to 1.5cm.
The bipolar plate is made of graphite, au, pt, ti, stainless steel and other metals, and is one of composite bipolar plates.
The device can be used for independent inspection of the fuel cell stack.
The invention also provides a use method of the device for independently inspecting and replacing the bipolar plate and the membrane electrode assembly clamped by the bipolar plate in the galvanic pile, which comprises the following steps:
(1) The electric pile is assembled, the electric pile assembly machine is used for compressing and detecting the air tightness of the electric pile, and the electric pile is normally used;
(2) When the membrane electrode wrapped by the bipolar plate needs inspection or replacement, a sliding rail device and a swing arm are installed according to the method, the bipolar plate wrapped by the membrane electrode to be detected is fixed on the swing arm through hole bolts, and other bipolar plates are fixed through hole bolts to prevent movement;
(3) Pushing the swing arm to the direction of the handle to push the bipolar plate which is wrapped with the membrane electrode to be detected out of the galvanic pile, and taking out the bipolar plate and the membrane electrode assembly wrapped by the bipolar plate through the handle;
(4) After the detection is finished, the bipolar plate is wrapped and clamped with the replaced membrane electrode, the membrane electrode is inserted into a corresponding position in a galvanic pile, the galvanic pile is pressed by a galvanic pile assembly machine, the air tightness is detected, and the galvanic pile is sealed by a sealing gasket, so that the inspection and replacement are finished.
The device designed by the invention can design the needed sliding rail, the length of the swing arm and the load of the sliding block by enlarging the size of the bipolar plate.
The device designed by the invention has simple structure and convenient processing, the bipolar plate area and volume in the device can be simply reduced or enlarged, the matched sliding rail device can be customized synchronously, and the independent inspection and/or replacement of the bipolar plate and the membrane electrode assembly wrapped by the bipolar plate can be effectively realized under the condition of not unstacking.
The invention can selectively take out the membrane electrode to be inspected or replaced under the wrapping clamp of the bipolar plates at the two sides. The invention solves the problems that the membrane electrode which needs to be checked or replaced can not be taken out without removing the stack at present, and the reaction device can be simply amplified and can independently take out the membrane electrode which is wrapped by the bipolar plate.
Drawings
Fig. 1 is a schematic structural view of an apparatus for independently inspecting and replacing bipolar plates and membrane electrode assemblies sandwiched between bipolar plates in a stack according to the present invention.
Fig. 2 is a left side view of an apparatus for independently inspecting and replacing bipolar plates and membrane electrode assemblies sandwiched between bipolar plates in a stack according to the present invention.
Fig. 3 is a schematic diagram of a front side gas flow field structure of a bipolar plate in an embodiment.
Fig. 4 is a schematic view of the back side cooling water flow field of the bipolar plate in an embodiment.
Fig. 5 is a view showing the use of the apparatus for independently inspecting and replacing bipolar plates and membrane electrode assemblies sandwiched between bipolar plates in a stack according to the present invention.
In the figure, 1, a sliding block; 2. a slideway; 3. a slide rail device; 4. swing arms; 5. a peg; 6. a hole; 7. a bipolar plate; 8. a sealing gasket; 9. a through hole; 10. a handle; 11. an end plate; 12. a hole bolt; 13. and a through hole bolt.
Detailed Description
The following non-limiting examples will enable those of ordinary skill in the art to more fully understand the invention and are not intended to limit the invention in any way.
Example 1
As shown in fig. 1-3, an apparatus for independently inspecting and replacing bipolar plates and membrane electrode assemblies sandwiched between bipolar plates in a stack. The top of the bipolar plate in the electric pile is provided with a lifting handle 9, the bottoms of the side surfaces of the two sides of the bipolar plate in the electric pile are respectively provided with a stud 5, the studs 5 and the bipolar plate are arranged on the same horizontal plane, the studs 5 are provided with through holes 9 and holes 6, the through holes 9 are perpendicular to the horizontal plane where the studs 5 and the bipolar plate are positioned and penetrate through the studs 5, and the holes 6 are perpendicular to the thickness surface of the studs 5 and do not penetrate through the studs 5; the thickness surfaces of the side surfaces of the end plates at two sides of the galvanic pile are provided with slide ways 2, the slide ways 2 are protruded out of the plane where the galvanic pile is positioned, the slide ways 2 are provided with sliding blocks 1, a swing arm 4 is arranged between two adjacent sliding blocks 1, the swing arm 4 is of a rectangular frame structure, a stud 5 is positioned under the rectangular frame structure, the stud 5 is far away from the bipolar plate, and a surface parallel to the thickness surface of the bipolar plate is tangent to the swing arm 4 or has a gap not larger than 1 cm; the through hole bolts 13 penetrate through the through holes 9 to fixedly connect the non-overhauled bipolar plates; the hole bolt 12 is screwed into the hole 6 through the swing arm 4, the swing arm 4 and the stud 5 on the bipolar plate which is wrapped with the membrane electrode to be tested are fixedly connected through the hole bolt 12 in a detachable mode, and the bipolar plate which is wrapped with the membrane electrode to be tested is taken out by pushing the stud 5 towards the handle 9. The sliding way 2 and the sliding block 1 form a sliding rail device 3, and 4 sliding rail devices 3 are arranged on the device. The sliding rail device 3 is detachably connected with the pile end plate, and the swing arm 4 is detachably connected with the sliding block 1. A sealing gasket 8 is arranged between two adjacent bipolar plates in the electric pile. The dynamic load of the slider 1 is 1-300kN. The slide block 1, the slide way 2 and the swing arm 4 are made of one of plastics, wood or stainless steel. The gasket 8 is made of neoprene, natural rubber, butyl cyanide rubber, chlorosulfonated polyethylene synthetic rubber, silicone rubber, ethylene propylene rubber, fluororubber, polytetrafluoroethylene, polypropylene, polyethylene, polyvinyl chloride, polyamide, polycarbonate, polyethylene terephthalate, polymethyl methacrylate, polyamide resin or polybutylene terephthalate.
Example 2
The application method of the device for independently inspecting and replacing the bipolar plates and the membrane electrode assemblies clamped by the bipolar plates in the galvanic pile comprises the following steps:
the steps of assembling the stack are as follows:
(1) Design of bipolar plate
The size and shape of the bipolar plate and the sealing ring are designed, and one material is selected for processing. The shape of the stud is cuboid, the length of the stud is 1-10cm, the width of the stud is 1-1.5cm, and the height of the stud is 1-1.5cm.
The bipolar plate is made of graphite, metals such as Au, pt, ti, stainless steel and the like, the composite bipolar plate and the sealing gasket are made of one of chloroprene rubber, natural rubber, butyl cyanide rubber, chlorosulfonated polyethylene synthetic rubber, silicone rubber, ethylene propylene rubber, fluororubber, polytetrafluoroethylene, polypropylene, polyethylene, polyvinyl chloride, polyamide, polycarbonate, polyethylene terephthalate, polymethyl methacrylate, polyamide resin and polybutylene terephthalate.
(2) Design slide rail
The length range of the device slideway is 1-100cm, the width is 1-10cm, the dynamic load of the sliding block is 1-300kN, the length range of the swing arm is 1-150cm, and the width is 1-10cm.
The slide block, the slide way and the swing arm are made of plastics, wood, alloy or metal.
Further, the plastic comprises PET, HDPE, PVC, LDPE, PP, PS, PC, PHA, PLA, PCL, PBS, PBSA; the alloy comprises spheroidal graphite cast iron, manganese steel, stainless steel, brass, bronze, white copper, soldering tin and hard aluminum; the metal comprises steel, copper, aluminum, lead and titanium.
Firstly, assembling a galvanic pile, and sequentially superposing a bipolar plate, a membrane electrode and a bipolar plate on a lower end plate on which an insulating plate and a current collecting plate are mounted; repeating the steps, and orderly superposing the single cells into a galvanic pile by using the assembly auxiliary positioning device; finally, stacking the upper end plate part, and applying designed pressure to compress the galvanic pile by using a galvanic pile assembling machine; detecting air tightness according to the test flow; after the air tightness detection is passed, a fastening screw is installed under the condition of maintaining pressure. The pressure can be removed and the stack can be laid flat, and the assembly of the stack is completed.
The galvanic pile is normally used, the membrane electrode is overhauled or replaced regularly,
when the membrane electrode wrapped by the bipolar plate needs inspection or replacement, a sliding rail device and a swing arm are installed according to the method, the bipolar plate wrapped by the membrane electrode to be detected is fixed on the swing arm through hole bolts, and the rest bipolar plates are fixed through hole bolts to prevent movement;
pushing the swing arm to the direction of the handle to push the bipolar plate which is wrapped with the membrane electrode to be detected out of the galvanic pile, and taking out the bipolar plate and the membrane electrode assembly wrapped by the bipolar plate through the handle;
after the detection is finished, the bipolar plate is wrapped with the replaced membrane electrode, the membrane electrode is inserted into the corresponding position of the electric pile, the electric pile is pressed by the electric pile assembly machine, the air tightness is detected, and the electric pile is sealed by the sealing gasket, so that the inspection replacement is finished.
Example 3
215cm 2 Preparing a membrane electrode galvanic pile:
the method comprises the steps of designing and processing each part of a reaction device, wherein the length of a bipolar plate is 230mm (including the height of a lifting handle), the width of the bipolar plate is 176mm, the thickness of the bipolar plate is 5mm, the length of a stud is 30mm, the width of the bipolar plate is 10mm, the thickness of the bipolar plate is 5mm consistent with that of the bipolar plate, a threaded hole with the diameter of 3mm and the depth of 25mm is formed in the direction perpendicular to the bipolar plate, a through hole with the diameter of 3mm and the depth of 5mm is formed in the position 5mm away from the edge of the stud in the direction perpendicular to the stud, the length of a swing arm is adjustable along with the width after stacking, stainless steel is selected as the material of the bipolar plate, silicon rubber is selected as the material of a sealing gasket, the slide and the swing arm are stainless steel, and the bipolar plate and 215cm are selected as the material of the slide 2 The membrane electrode and the bipolar plate are sequentially overlapped on the lower end plate on which the insulating plate and the collector plate are arranged; repeating the steps for 10 times, and orderly superposing the single cells into a galvanic pile by using the assembly auxiliary positioning device; finally, the upper end plate part is overlapped, and the electric pile is tightly pressed by applying designed pressure by using an assembling machine; detecting air tightness according to the test flow; after the air tightness detection is passed, a fastening screw is installed under the condition of maintaining pressure. The pressure can be removed and the stack can be laid flat, and the assembly of the stack is completed.
When the membrane electrode needs to be inspected or replaced, a sliding rail device is arranged on the assembled electric pile, the sliding rail is symmetrically arranged on the side edges of the end plates on the two sides, four sliding blocks and a swing arm fixed with the sliding blocks are arranged on the sliding rail.
Fixing the bipolar plate which is wrapped with the membrane electrode to be tested on the swing arm by using a hole bolt, and fixing the rest bipolar plates by using a through hole bolt to prevent movement;
pushing the swing arm to the direction of the handle to push the bipolar plate which is wrapped with the membrane electrode to be detected out of the galvanic pile, and taking out the bipolar plate and the membrane electrode assembly wrapped by the bipolar plate through the handle;
after the detection is finished, the bipolar plate is wrapped with the replaced membrane electrode, the membrane electrode is inserted into the corresponding position of the electric pile, the electric pile is pressed by the electric pile assembly machine, the air tightness is detected, and the electric pile is sealed by the sealing gasket, so that the inspection replacement is finished.
Claims (9)
1. The device for independently inspecting and replacing the bipolar plate and the membrane electrode assembly wrapped by the bipolar plate in the electric pile is characterized in that a lifting handle (10) is arranged at the top of the bipolar plate in the electric pile, studs (5) are arranged at the bottoms of two side surfaces of the bipolar plate in the electric pile, the studs (5) and the bipolar plate are arranged on the same horizontal plane, through holes (9) and holes (6) are formed in the studs (5), the through holes (9) are perpendicular to the horizontal plane where the studs (5) and the bipolar plate are located and penetrate through the studs (5), and the holes (6) are perpendicular to the thickness surface of the studs (5) and do not penetrate through the studs (5); a slideway (2) is arranged on the thickness surface of the side surfaces of the end plates at two sides of the electric pile, the slideway (2) protrudes out of the plane where the electric pile is positioned, a sliding block (1) is arranged on the slideway (2), a swinging arm (4) is arranged between two adjacent sliding blocks (1), the swinging arm (4) is of a rectangular frame structure, a stud (5) is positioned under the rectangular frame structure, and the stud (5) is far away from the bipolar plate and is tangential to the swinging arm (4) or has a certain gap with the plane parallel to the thickness surface of the bipolar plate; the through hole bolt (13) penetrates through the through hole (9) to be fixedly connected with the non-overhauling bipolar plate; the hole bolt (12) is screwed into the hole (6) through the swing arm (4), the swing arm (4) and the stud (5) on the bipolar plate which is wrapped with the membrane electrode to be tested are detachably and fixedly connected through the hole bolt (12), and the bipolar plate which is wrapped with the membrane electrode to be tested is taken out by pushing the stud (5) towards the handle (10);
the sliding block (1), the slideway (2) and the swing arm (4) are made of plastics, wood, alloy or metal.
2. Device according to claim 1, characterized in that the slide (2) and the slide block (1) form a slide rail device (3), on which 2 or 4 slide rail devices (3) are arranged.
3. Device according to claim 2, characterized in that the slide rail means (3) are detachably connected to the stack end plate and the swing arm (4) is detachably connected to the slider (1).
4. Device according to claim 1, characterized in that a gasket (8) is provided between two adjacent bipolar plates in the stack.
5. Device according to claim 1, characterized in that the dynamic load of the slider (1) is 1-300kN.
6. The device of claim 1, wherein the gap is no greater than 1cm.
7. The device of claim 1, wherein the plastic comprises PET, HDPE, PVC, LDPE, PP, PS, PC, PHA, PLA, PCL, PBS, PBSA; the alloy comprises spheroidal graphite cast iron, manganese steel, stainless steel, brass, bronze, white copper, soldering tin and hard aluminum; the metal comprises steel, copper, aluminum, lead and titanium.
8. The device according to claim 4, wherein the gasket (8) is made of neoprene, natural rubber, butyl cyanide rubber, chlorosulfonated polyethylene synthetic rubber, silicone rubber, ethylene propylene rubber, fluororubber, polytetrafluoroethylene, polypropylene, polyethylene, polyvinyl chloride, polyamide, polycarbonate, polyethylene terephthalate, polymethyl methacrylate, polyamide resin or polybutylene terephthalate.
9. A method of using the apparatus of any one of claims 1-8 for independently inspecting and replacing bipolar plates and bipolar plate sandwiched membrane electrode assemblies in a stack, comprising the steps of:
(1) The electric pile is assembled, the electric pile assembly machine is used for compressing and detecting the air tightness of the electric pile, and the electric pile is normally used;
(2) When the membrane electrode wrapped by the bipolar plate needs inspection or replacement, a sliding rail device and a swing arm are installed, the bipolar plate wrapped by the membrane electrode to be detected is fixed on the swing arm through hole bolts, and the rest bipolar plates are fixed through hole bolts to prevent movement;
(3) Pushing the swing arm to the direction of the handle to push the bipolar plate which is wrapped with the membrane electrode to be detected out of the galvanic pile, and taking out the bipolar plate and the membrane electrode assembly wrapped by the bipolar plate through the handle;
(4) After the detection is finished, the bipolar plate is wrapped and clamped with the replaced membrane electrode, the membrane electrode is inserted into a corresponding position in a galvanic pile, the galvanic pile is pressed by a galvanic pile assembly machine, the air tightness is detected, and the galvanic pile is sealed by a sealing gasket, so that the inspection and replacement are finished.
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|---|---|---|---|
| CN202011255480.8A CN112259774B (en) | 2020-11-11 | 2020-11-11 | Device for independently inspecting and replacing bipolar plates in galvanic pile and membrane electrode assemblies wrapped by bipolar plates and application method |
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|---|---|---|---|
| CN202011255480.8A CN112259774B (en) | 2020-11-11 | 2020-11-11 | Device for independently inspecting and replacing bipolar plates in galvanic pile and membrane electrode assemblies wrapped by bipolar plates and application method |
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| CN112259774A CN112259774A (en) | 2021-01-22 |
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