CN111446463A - Industrial production process of flexible carbon-based bipolar plate of fuel cell - Google Patents
Industrial production process of flexible carbon-based bipolar plate of fuel cell Download PDFInfo
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- CN111446463A CN111446463A CN202010149444.7A CN202010149444A CN111446463A CN 111446463 A CN111446463 A CN 111446463A CN 202010149444 A CN202010149444 A CN 202010149444A CN 111446463 A CN111446463 A CN 111446463A
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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
- H01M8/02—Details
- H01M8/0202—Collectors; Separators, e.g. bipolar separators; Interconnectors
- H01M8/0204—Non-porous and characterised by the material
- H01M8/0213—Gas-impermeable carbon-containing materials
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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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Abstract
The invention mainly discloses an industrial production process of a fuel cell flexible carbon-based bipolar plate, which sequentially comprises the following steps of S1 and a raw material plate pretreatment process; s2, after the pretreatment of the raw material plate is finished, the unipolar plate forming process is carried out; s3, cleaning the unipolar plate; s4, a monopolar plate arrangement process; s5, performing airtight treatment on the unipolar plate; s6, the unipolar plate after airtight treatment and the reforming tool enter a cleaning process together; s7, a monopolar plate leveling procedure; s8, gluing the polar plate; s9, a bipolar plate synthesis process; s10, a bipolar plate curing process; and S11, detecting the bipolar plate. The production efficiency is improved, the product percent of pass is improved, the labor intensity is reduced, the manufacturing cost is reduced, and the commercialized and large-scale manufacturing of the bipolar plate is realized.
Description
Technical Field
The invention relates to the technical field of fuel cells, in particular to an industrial production process of a flexible carbon-based bipolar plate of a fuel cell.
Background
Fuel cells are one of a number of electrochemical power sources, and more specifically, fuel cells are a process module that converts the energy of a chemical reaction directly into electrical energy. A fuel cell is greatly different from a general battery, in which an active material is stored inside the battery, so that the capacity of the battery is determined by the amount of the stored active material, and the active material of the fuel cell can be continuously input. The fuel cell mainly comprises a proton exchange membrane fuel cell and an alkaline fuel cellCells, phosphoric acid fuel cells, molten carbonate fuel cells, solid oxide fuel cells, and the like. The proton exchange membrane fuel cell is widely applied, and particularly, the proton exchange membrane fuel cell takes hydrogen and oxygen as reaction substances. The hydrogen-oxygen fuel cell has the advantages of large capacity, high specific energy, high conversion efficiency, wide power range and the like, has wide application prospect, and is known as the ultimate energy of twenty-first century. The single cell consists of bipolar plate and membrane electrode. The bipolar plate mainly has the following functions: providing current paths between adjacent cells, reactant gas distribution channels, cooling channels, separating fuel, coolant (water) and oxidant supplied to the cells, and oxidant (0) separating adjacent cells2) And a reducing agent (H)2) Therefore, the bipolar plate needs to have good electrical conductivity, reliable sealing performance, and mechanical strength necessary for providing stable structure of the stack.
In the prior art, the material of the fuel cell bipolar plate mostly adopts a composite plate or a metal plate, and the structure of a common bipolar plate surface flow field is a channel type structure on both sides of the polar plate, namely, a complex groove-convex channel structure is respectively processed on both sides of the monopolar plate. The "groove" portion functions as a gas transmission channel, and the "land" portion functions as a current path. The metal plate has high mechanical strength, good conductivity and good machining performance, but has poor corrosion resistance, is easy to corrode, and easily pollutes a membrane electrode to influence the service life of a fuel cell. In addition, the bipolar plates with the same volume have the advantages that the metal material plate is heavy, the manufacturing cost of the surface flow field is high, and meanwhile, the manufacturing cost is high due to the fact that the surface of the metal plate is subjected to a coating treatment process, so that the light weight of the galvanic pile cannot be achieved, the energy density is low, and meanwhile, the material cost and the processing cost are high, and the application is greatly limited.
Compared with the bipolar plate made of the flexible carbon-based plate, the flexible carbon-based plate is strong in corrosion resistance, good in electric conductivity, good in processability, large in thickness range, light in weight, and low in material cost and manufacturing cost. But because flexible carbon-based plate is fragile, loose material, it is high to protect the requirement in suppression, material in the transportation. Therefore, limited by material characteristics, the manufacturing of the flexible carbon-based bipolar plate is completed by manual operation at present, and the automation or even semi-automation of the manufacturing process cannot be realized. Due to the adoption of manual operation, the whole process has high requirement on the operating skills of operators, the consistency of the product quality is difficult to be effectively guaranteed, and meanwhile, due to the fact that large-scale production cannot be realized, the efficiency is low, the labor intensity is high, the loss is high, and the cost in the manufacturing process is greatly increased.
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides an industrial production process of a flexible carbon-based bipolar plate of a fuel cell, which improves the production efficiency, improves the product percent of pass, reduces the labor intensity and the manufacturing cost, and realizes the commercial and large-scale manufacturing of the bipolar plate.
In order to achieve the purpose, the invention is realized by the following technical scheme: an industrial production process of a fuel cell flexible carbon-based bipolar plate sequentially comprises the following steps,
s1, a raw material plate pretreatment procedure;
s2, after the pretreatment of the raw material plate is finished, the unipolar plate forming process is carried out;
s3, cleaning the unipolar plate;
s4, a monopolar plate arrangement process;
s5, performing airtight treatment on the unipolar plate;
s6, the unipolar plate after airtight treatment and the reforming tool enter a cleaning process together;
s7, a monopolar plate leveling procedure;
s8, gluing the polar plate;
s9, a bipolar plate synthesis process;
s10, a bipolar plate curing process;
and S11, detecting the bipolar plate.
The invention further comprises: s1, a raw material plate pretreatment procedure, which comprises heating, dehumidifying and drying the flexible carbon-based raw material plate, and adsorbing and cleaning the surface dust to obtain a dry and clean raw material plate;
the single-pole plate forming process in the step S2 comprises the steps that after a raw material plate is conveyed to a forming machine through an automatic conveying system, a mechanical arm grabs the raw material plate and conveys the raw material plate into a forming die, the forming machine is started, after pressure is applied, the thickness of the raw material plate is compressed to 0.5-5mm, a required flow field is pressed on the upper surface or the upper surface and the lower surface of the raw material plate, the raw material plate is pressed into a flexible carbon-based single-pole plate, and after the actions are finished, the mechanical arm grabs the manufactured flexible carbon-based single-pole plate onto the conveying system and conveys the flexible carbon;
s3, a single-pole plate cleaning process comprises the steps that the flexible carbon-based single-pole plate reaches a buffer storage workbench, the flexible carbon-based single-pole plate is grabbed to the cleaning workbench of the full-automatic cleaning machine by a manipulator, the waste edges of the single-pole plate are cleaned, then the flexible carbon-based single-pole plate is sent to a reversible cleaning mechanism by the manipulator to be scrubbed on two sides of the single-pole plate, then the manipulator of the automatic surface cleaning machine of the single-pole plate grabs the flexible carbon-based single-pole plate to the turnover workbench, the single-pole plate is sent to a transition tool by the cleaning manipulator, and then the flexible carbon-based single-pole plate is automatically and accurately sent to the cleaning tool by the transition tool;
s4, a single-pole plate arrangement process, wherein the loaded arrangement tool and the flexible carbon-based single-pole plate are transferred to the single-pole plate airtight treatment step;
s5, hoisting a certain number of finished flexible carbon-based unipolar plates into an airtight working tank through a hoisting and carrying mechanism, closing a sealing cover, vacuumizing the airtight working tank, injecting raw material liquid to a certain liquid level of the working tank, maintaining the pressure until the vacuum degree in the airtight working tank reaches a set value, breaking the vacuum of the working tank after the pressure is maintained for a set time, releasing the pressure and draining the pressure after the set value is reached, opening a working tank cover, hoisting and taking out the finished plate, and transferring to a cleaning process.
The method comprises the steps of S6, enabling the hermetically treated unipolar plate and the reforming tool to enter a cleaning process, immersing the hermetically treated flexible carbon-based unipolar plate and the reforming tool into a cleaning tank together, removing residues of the flexible carbon-based polar plate, immersing the flexible carbon-based unipolar plate into a hot water curing tank for high-temperature curing, drying the flexible carbon-based unipolar plate and the reforming tool in a drying tank, conveying the flexible carbon-based unipolar plate and the reforming tool into a dehumidifying oven through a hoisting process module for drying, and transferring to a leveling process after dehumidifying and drying;
s7, a single-pole-plate leveling procedure, which comprises the steps of placing the flexible carbon-based pole plate after dehumidification and drying in a leveling tool, starting a press to pressurize, conveying the leveling tool into a leveling furnace integrally, and after leveling, transferring the finished flexible carbon-based pole plate to a gluing process module to carry out gluing treatment;
the pole plate gluing process in the step S8 includes grabbing the flexible carbon-based unipolar plate to a gluing machine working platform through a manipulator on a unipolar plate feeding machine, positioning and fixing, then carrying out glue dispensing or screen printing gluing, after the gluing is finished, grabbing the glued unipolar plate to a bipolar plate synthesis process module or a unipolar plate blanking working platform through the manipulator on the unipolar plate feeding machine, and then carrying out flow blanking or transferring to the bipolar plate synthesis process module through a conveying system;
s9, a bipolar plate synthesizing process, which comprises the steps of placing the flexible carbon-based unipolar plate coated with glue in a bipolar plate synthesizing tool, accurately placing the paired unipolar plates, pressurizing, and transferring to a bipolar plate curing step;
in the step of the S10 bipolar plate curing process, the bonded bipolar plate flows into a bipolar plate curing furnace along with a tool to be cured, and the bipolar plate curing furnace automatically feeds and discharges materials to complete the synthesis of the bipolar plate according to the temperature control;
and step S11, a bipolar plate detection procedure, namely, sending the bipolar plate into a bipolar plate detection device, and detecting the bipolar plate, wherein the bipolar plate meeting the requirements is the finished product flexible carbon-based bipolar plate.
The invention further comprises: the bipolar plate cutting process is selected to be carried out after the bipolar plate curing process, the multi-connected-piece structure to be cut is sent into the bipolar plate cutting module, the multi-connected-piece bipolar plate is cut through the hydraulic driving upper die of the cutting machine, the bipolar plate with the suitable specification is obtained, and the cut bipolar plate is sent into the bipolar plate detection equipment to be detected.
The invention further comprises: the head tank and the airtight working tank are both provided with a jacket, the top of the head tank and the airtight working tank is provided with a vacuum pumping pipeline valve system, the airtight working tank is a pressure container with a sealed structure, a pressure adjusting system is arranged on the airtight working tank, and the bottom of the tank body is provided with a drain outlet.
The invention further comprises: the dehumidification oven is airtight structure, and the top sets up the sealing door that can open, and the inside heated air circulation of dehumidification oven, airtight working tank, washing tank and hot water solidification groove's top set up hoist and mount transport mechanism.
The invention further comprises: the gluing station can adopt a dispenser or a screen printing machine.
The invention further comprises: the bipolar plate curing oven is provided with a temperature control system and a hot air circulating system, and a heat insulation device is arranged in the bipolar plate curing oven.
The invention further comprises: the bipolar plate curing furnace is divided into five functional sections, namely a feeding functional section, a heating functional section, a constant temperature functional section, a cooling functional section and a discharging functional section, wherein each functional section is provided with a temperature sensor, the temperature is controlled by PID (proportion integration differentiation), the temperature is ensured to be accurate and controllable, and automatic doors are sealed among the heating functional section, the constant temperature functional section and the cooling functional section, and are sealed by the automatic doors.
The invention further comprises: the bipolar plate curing furnace is provided with a temperature control system and a hot air circulating system, so that the temperature in the furnace is ensured to meet the process requirements.
The invention further comprises: the bipolar plate curing oven is internally provided with a heat insulation device, the outer side of the bipolar plate curing oven is provided with an observation window, and the inner part of the bipolar plate curing oven is provided with a lighting lamp. So as to observe the operation condition of the internal product from the outside of the furnace body.
The invention has the following beneficial effects:
the continuous production of the flexible carbon-based bipolar plate can be realized, the consistency of the product quality is achieved through the continuous production and the system control of the production process, the production efficiency is improved, the product qualification rate is improved, the labor intensity is reduced, the manufacturing cost is reduced, and the commercialized and large-scale manufacturing of the bipolar plate is realized.
Detailed Description
An industrial production process of a fuel cell flexible carbon-based bipolar plate sequentially comprises the following steps,
s1, a raw material plate pretreatment procedure, which comprises heating, dehumidifying and drying the flexible carbon-based raw material plate, and adsorbing and cleaning the dust on the surface to obtain a dry and clean raw material plate;
s2, after the raw material plate is pretreated, the raw material plate enters a unipolar plate forming process, the raw material plate is conveyed to a forming machine through an automatic conveying system, a mechanical arm grabs the raw material plate and conveys the raw material plate into a forming die, the forming machine is started, after pressure is applied, the thickness of the raw material plate is compressed to 0.5-5mm, meanwhile, a required flow field is pressed on the upper surface or the upper surface and the lower surface of the raw material plate, the raw material plate is pressed into a flexible carbon-based unipolar plate, and after the actions are completed, the mechanical arm grabs the manufactured flexible carbon-based unipolar plate onto the conveying system and conveys the flexible carbon-based unipolar plate;
s3, a single-pole plate cleaning process, which comprises the steps that a flexible carbon-based single-pole plate reaches a buffer storage workbench, the flexible carbon-based single-pole plate is grabbed to the cleaning workbench of the full-automatic cleaning machine by a manipulator, the waste edges of the single-pole plate are cleaned, then the flexible carbon-based single-pole plate is conveyed to a reversible cleaning mechanism by the manipulator to perform two-side scrubbing and cleaning work on the single-pole plate, and the other side of the single-pole plate is automatically turned and cleaned when the cleaned brush finishes one side each time; the device can also be a rolling brush, the rolling is carried out while brushing, meanwhile, a dust absorption pipeline system is arranged, dust enters a dust collection device, then a manipulator of the automatic single-pole plate leveling machine grabs the flexible carbon-based single-pole plate with the cleaned surface to a turnover worktable, the single-pole plate is sent to a transition tool through the leveling manipulator, and then the transition tool automatically and accurately sends the flexible carbon-based single-pole plate into the leveling tool;
s4, a single-pole plate arrangement process, wherein the loaded arrangement tool and the flexible carbon-based single-pole plate are transferred to the single-pole plate airtight treatment step;
s5, a monopolar plate airtight treatment process, which mainly completes monopolar plate leakage stoppage, comprises a raw material tank and an airtight working tank, wherein the raw material tank and the airtight working tank are provided with an accurate temperature control system, the raw material tank and the airtight working tank are both provided with a jacket, the tops of the raw material tank and the airtight working tank are provided with a vacuum pumping pipeline valve system, the airtight working tank is a pressure container with a sealing structure, the airtight working tank can respectively bear positive pressure and negative pressure, the upper part of the airtight working tank is provided with a pressure regulating system, and the bottom of the tank body is provided with a. Firstly, hoisting a certain number of finished flexible carbon-based unipolar plates together with a finishing tool into an airtight working tank through a hoisting and carrying mechanism, closing a sealing cover, vacuumizing the airtight working tank, injecting raw materials into the working tank from a raw material tank, continuously vacuumizing the working tank until the liquid level in the working tank is in place, maintaining the pressure for a set time, breaking the vacuum of the working tank, releasing the pressure and draining after the set time is reached, opening a working tank cover, hoisting and taking out the finishing tool, and transferring to a cleaning process;
s6, the unipolar plate after airtight treatment and the reforming tool enter a cleaning process, the unipolar plate after airtight treatment and the reforming tool are immersed into a cleaning tank together, the cleaning tank is a closed structure box body, cleaning solution is filled in the box body, residues of the unipolar plate after flexible carbon are removed, then the unipolar plate after airtight treatment and the reforming tool are immersed into a hot water solidification tank for airtight high-temperature solidification treatment, then the unipolar plate is dried through a drying tank, finally the unipolar plate is conveyed into a dehumidification drying oven for drying treatment through a hoisting process module, and after dehumidification and drying are finished, the unipolar plate and the reforming tool are transferred to a leveling process treatment step;
s7, a unipolar plate leveling procedure, which comprises the steps of placing the flexible carbon-based polar plate after dehumidification and drying in a leveling tool, starting a press to pressurize, integrally conveying the leveling tool into a leveling furnace, and after leveling, transferring the finished flexible carbon-based polar plate to a gluing process module to carry out gluing treatment;
and S8, gluing the polar plate, wherein the gluing process comprises the steps that the flexible carbon-based unipolar plate is grabbed to a working platform of a gluing machine through a manipulator on a unipolar plate feeding machine, and is positioned and fixed, and the gluing station can adopt a dispenser or a screen printing machine. Dispensing or screen printing glue, after the glue is coated, the manipulator on the unipolar plate feeding machine grabs the unipolar plate coated with the glue to the bipolar plate synthesis process module or a unipolar plate blanking worktable, and then the unipolar plate is circularly blanked by a conveying system or is transferred to the bipolar plate synthesis process module;
s9, a bipolar plate synthesis procedure, which comprises the steps of placing the flexible carbon-based unipolar plate coated with glue in a bipolar plate synthesis tool, then accurately placing the paired unipolar plates, then pressurizing, and transferring to a bipolar plate curing step;
s10, a bipolar plate curing process, wherein the bonded bipolar plate flows into a bipolar plate curing furnace along with the tool to be cured, and the bipolar plate curing furnace automatically feeds and discharges materials to complete the synthesis of the bipolar plate according to the temperature control;
and S11, a bipolar plate detection process, wherein the bipolar plate cutting process is selected after the bipolar plate solidification process, the multi-connected-piece structure to be cut is sent to a bipolar plate cutting module, the multi-connected-piece bipolar plate is cut by a hydraulically-driven cutting machine upper die to obtain a bipolar plate with a suitable specification, and the cut bipolar plate is sent to a bipolar plate detection device for detection. And for a multi-connected structure which does not need to be cut, the bipolar plate is directly sent into bipolar plate detection equipment, the bipolar plate is detected, and the bipolar plate meeting the requirements is the finished product flexible carbon-based bipolar plate.
The dehumidification oven is of a closed structure, the top of the dehumidification oven is provided with an openable sealing door, hot air in the dehumidification oven body circulates, and air in the dehumidification oven body is heated and dehumidified outside and then is sent into the dehumidification oven body, so that energy consumption is saved; and a hoisting and carrying mechanism is arranged above the hot air circulation airtight working tank, the cleaning tank and the hot water curing tank in the box body.
The bipolar plate curing furnace is divided into five functional sections, namely a feeding functional section, a heating functional section, a constant temperature functional section, a cooling functional section and a discharging functional section, wherein each functional section is provided with a temperature sensor, the temperature is controlled by PID (proportion integration differentiation), the temperature is ensured to be accurate and controllable, and automatic doors are sealed among the heating functional section, the constant temperature functional section and the cooling functional section, and are sealed by the automatic doors. The bipolar plate curing furnace is provided with a temperature control system and a hot air circulating system, so that the temperature in the furnace is ensured to meet the process requirements. The bipolar plate curing oven is internally provided with a heat insulation device, the outer side of the bipolar plate curing oven is provided with an observation window, and the inner part of the bipolar plate curing oven is provided with a lighting lamp. So as to observe the operation condition of the internal product from the outside of the furnace body
The continuous production of the flexible carbon-based bipolar plate can be realized, the consistency of the product quality is achieved through the continuous production and the system control of the production process, the production efficiency is improved, the product qualification rate is improved, the labor intensity is reduced, the manufacturing cost is reduced, and the commercialized and large-scale manufacturing of the bipolar plate is realized.
The above-mentioned embodiments are only used for explaining the inventive concept of the present invention, and do not limit the protection of the claims of the present invention, and any insubstantial modifications of the present invention using this concept shall fall within the protection scope of the present invention.
Claims (9)
1. An industrial production process of a fuel cell flexible carbon-based bipolar plate is characterized by sequentially comprising the following steps,
s1, a raw material plate pretreatment procedure;
s2, after the pretreatment of the raw material plate is finished, the unipolar plate forming process is carried out;
s3, cleaning the unipolar plate;
s4, a monopolar plate arrangement process;
s5, performing airtight treatment on the unipolar plate;
s6, the unipolar plate after airtight treatment and the reforming tool enter a cleaning process together;
s7, a monopolar plate leveling procedure;
s8, gluing the unipolar plate;
s9, a bipolar plate synthesis process;
s10, a bipolar plate curing process;
and S11, detecting the bipolar plate.
2. The industrial production process of the flexible carbon-based bipolar plate of the fuel cell according to claim 1, wherein:
s1, a raw material plate pretreatment procedure, which comprises heating, dehumidifying and drying the flexible carbon-based raw material plate, and adsorbing and cleaning the surface dust to obtain a dry and clean raw material plate;
the single-pole plate forming process in the step S2 comprises the steps that after a raw material plate is conveyed to a forming machine through an automatic conveying system, a mechanical arm grabs the raw material plate and conveys the raw material plate into a forming die, the forming machine is started, after pressure is applied, the thickness of the raw material plate is compressed to 0.5-5mm, a required flow field is pressed on the upper surface or the upper surface and the lower surface of the raw material plate, the raw material plate is pressed into a flexible carbon-based single-pole plate, and after the actions are finished, the mechanical arm grabs the manufactured flexible carbon-based single-pole plate onto the conveying system and conveys the flexible carbon;
s3, a single-pole plate cleaning process comprises the steps that the flexible carbon-based single-pole plate reaches a buffer storage workbench, the flexible carbon-based single-pole plate is grabbed to the cleaning workbench of the full-automatic cleaning machine by a manipulator, the waste edges of the single-pole plate are cleaned, then the flexible carbon-based single-pole plate is sent to a reversible cleaning mechanism by the manipulator to be scrubbed on two sides of the single-pole plate, then the manipulator of the automatic surface cleaning machine of the single-pole plate grabs the flexible carbon-based single-pole plate to the turnover workbench, the single-pole plate is sent to a transition tool by the cleaning manipulator, and then the flexible carbon-based single-pole plate is automatically and accurately sent to the cleaning tool by the transition tool;
s4, a single-pole plate arrangement process, wherein the loaded arrangement tool and the flexible carbon-based single-pole plate are transferred to the single-pole plate airtight treatment step;
s5, a single-pole plate airtight treatment process, which comprises the steps of hoisting a certain number of finished flexible carbon-based single-pole plates together with a reforming tool into an airtight working tank through a hoisting and carrying mechanism, vacuumizing the airtight working tank after closing a sealing cover and sealing, injecting raw material liquid into the working tank to a certain liquid level, vacuumizing the airtight working tank after the vacuum degree in the airtight working tank reaches, maintaining the pressure for a set time, breaking the vacuum of the working tank, releasing pressure and draining after the set time is reached, opening a working tank cover, hoisting and taking out the reforming tool, and transferring to a cleaning process.
The method comprises the steps of S6, enabling the hermetically treated unipolar plate and the reforming tool to enter a cleaning process, immersing the hermetically treated flexible carbon-based unipolar plate and the reforming tool into a cleaning tank together, removing residues of the flexible carbon-based polar plate, immersing the flexible carbon-based unipolar plate into a hot water curing tank for high-temperature curing, drying the flexible carbon-based unipolar plate and the reforming tool in a drying tank, conveying the flexible carbon-based unipolar plate and the reforming tool into a dehumidifying oven through a hoisting process module for drying, and transferring to a leveling process after dehumidifying and drying;
s7, a single-pole-plate leveling procedure, which comprises the steps of placing the flexible carbon-based pole plate after dehumidification and drying in a leveling tool, starting a press to pressurize, conveying the leveling tool into a leveling furnace integrally, and after leveling, transferring the finished flexible carbon-based pole plate to a gluing process module to carry out gluing treatment;
the pole plate gluing process in the step S8 includes grabbing the flexible carbon-based unipolar plate to a gluing machine working platform through a manipulator on a unipolar plate feeding machine, positioning and fixing, then carrying out glue dispensing or screen printing gluing, after the gluing is finished, grabbing the glued unipolar plate to a bipolar plate synthesis process module or a unipolar plate blanking working platform through the manipulator on the unipolar plate feeding machine, and then carrying out flow blanking or transferring to the bipolar plate synthesis process module through a conveying system;
s9, a bipolar plate synthesizing process, which comprises the steps of placing the flexible carbon-based unipolar plate coated with glue in a bipolar plate synthesizing tool, accurately placing the paired unipolar plates, pressurizing, and transferring to a bipolar plate curing step;
in the step of the S10 bipolar plate curing process, the bonded bipolar plate flows into a bipolar plate curing furnace along with a tool to be cured, and the bipolar plate curing furnace automatically feeds and discharges materials to complete the synthesis of the bipolar plate according to the temperature control;
and step S11, a bipolar plate detection procedure, namely, sending the bipolar plate into a bipolar plate detection device, and detecting the bipolar plate, wherein the bipolar plate meeting the requirements is the finished product flexible carbon-based bipolar plate.
3. The industrial production process of the flexible carbon-based bipolar plate of the fuel cell according to claim 1, wherein: the bipolar plate cutting process is selected to be carried out after the bipolar plate curing process, the multi-connected-piece structure to be cut is sent into the bipolar plate cutting module, the multi-connected-piece bipolar plate is cut through the hydraulic driving upper die of the cutting machine, the bipolar plate with the suitable specification is obtained, and the cut bipolar plate is sent into the bipolar plate detection equipment to be detected.
4. The industrial production process of the flexible carbon-based bipolar plate of the fuel cell according to claim 1, wherein: the head tank and the airtight working tank are both provided with a jacket, the top of the head tank and the airtight working tank is provided with a vacuum pumping pipeline valve system, the airtight working tank is a pressure container with a sealed structure, a pressure adjusting system is arranged on the airtight working tank, and the bottom of the tank body is provided with a drain outlet.
5. The industrial production process of the flexible carbon-based bipolar plate of the fuel cell according to claim 1, wherein: the dehumidification oven is airtight structure, and the top sets up the sealing door that can open, and the inside heated air circulation of dehumidification oven, airtight working tank, washing tank and hot water solidification groove's top set up hoist and mount transport mechanism.
6. The industrial production process of the flexible carbon-based bipolar plate of the fuel cell according to claim 1, wherein: the gluing station can adopt a dispenser or a screen printing machine.
7. The industrial production process of the flexible carbon-based bipolar plate of the fuel cell according to claim 1, wherein: the bipolar plate curing furnace is divided into five functional sections, namely a feeding functional section, a heating functional section, a constant temperature functional section, a cooling functional section and a discharging functional section, wherein each functional section is provided with a temperature sensor, the temperature is controlled by PID, and automatic doors are sealed among the heating functional section, the constant temperature functional section and the cooling functional section and are sealed outwards.
8. The industrial production process of the flexible carbon-based bipolar plate of the fuel cell according to claim 1, wherein: the bipolar plate curing oven is provided with a temperature control system and a hot air circulating system.
9. The industrial production process of the flexible carbon-based bipolar plate of the fuel cell according to claim 1, wherein: the bipolar plate curing oven is internally provided with a heat insulation device, the outer side of the bipolar plate curing oven is provided with an observation window, and the inner part of the bipolar plate curing oven is provided with a lighting lamp.
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
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| CN112563528A (en) * | 2020-12-15 | 2021-03-26 | 广东国鸿氢能科技有限公司 | Preparation method of compression molding bipolar plate |
| CN114464838A (en) * | 2022-02-16 | 2022-05-10 | 安徽瑞氢动力科技有限公司 | Method for manufacturing fuel cell bipolar plate |
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