CN113369238A - Method and device for cleaning graphite bipolar plate - Google Patents
Method and device for cleaning graphite bipolar plate Download PDFInfo
- Publication number
- CN113369238A CN113369238A CN202010115953.8A CN202010115953A CN113369238A CN 113369238 A CN113369238 A CN 113369238A CN 202010115953 A CN202010115953 A CN 202010115953A CN 113369238 A CN113369238 A CN 113369238A
- Authority
- CN
- China
- Prior art keywords
- bipolar plate
- graphite bipolar
- compressed air
- control valve
- vacuum
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 title claims abstract description 67
- 229910002804 graphite Inorganic materials 0.000 title claims abstract description 67
- 239000010439 graphite Substances 0.000 title claims abstract description 67
- 238000000034 method Methods 0.000 title claims abstract description 32
- 238000004140 cleaning Methods 0.000 title claims abstract description 29
- 239000011347 resin Substances 0.000 claims abstract description 19
- 229920005989 resin Polymers 0.000 claims abstract description 19
- 238000007664 blowing Methods 0.000 claims abstract description 7
- 239000007788 liquid Substances 0.000 claims description 7
- 238000004065 wastewater treatment Methods 0.000 abstract description 5
- 239000000446 fuel Substances 0.000 description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 6
- 239000008367 deionised water Substances 0.000 description 5
- 229910021641 deionized water Inorganic materials 0.000 description 5
- 239000004094 surface-active agent Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000010926 purge Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 239000000110 cooling liquid Substances 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000007598 dipping method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000014509 gene expression Effects 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 239000007800 oxidant agent Substances 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B5/00—Cleaning by methods involving the use of air flow or gas flow
- B08B5/02—Cleaning by the force of jets, e.g. blowing-out cavities
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B13/00—Accessories or details of general applicability for machines or apparatus for cleaning
Landscapes
- Fuel Cell (AREA)
- Battery Electrode And Active Subsutance (AREA)
Abstract
The application relates to a method and a device for cleaning a graphite bipolar plate, wherein the method comprises the following steps: placing the graphite bipolar plate impregnated with the resin solution on a vacuum tray, and opening a vacuum control valve; opening a compressed air control valve, and distributing compressed air to the whole surface of the graphite bipolar plate through an air knife; and blowing an air knife from one end of the graphite bipolar plate to the other end of the graphite bipolar plate along the direction of the flow channel in the graphite bipolar plate; closing the vacuum valve and turning over the graphite bipolar plate; and cleaning the other side of the graphite bipolar plate. By adopting the method and the device, the wastewater treatment cost can be reduced, the graphite bipolar plate is prevented from being damaged, and the risk of excessive cleaning is avoided.
Description
Technical Field
The present application relates to the field of batteries, and more particularly, to a method and apparatus for cleaning a graphite bipolar plate in a fuel cell.
Background
The fuel cell is a chemical device which directly converts chemical energy of fuel into electric energy, and does not generate noise or harmful gas, so that the fuel cell is a clean and efficient green and environment-friendly power supply. Bipolar plates are one of the key components of fuel cells, being the "backbone" in the stack. The bipolar plate and the membrane electrode layer are assembled into an electric pile, which plays a supporting role in the fuel cell, and can also collect current, provide channels for cooling liquid, separate oxidant and reductant and the like.
At present, the bipolar plates generally adopted by the fuel cell comprise a metal bipolar plate, a flexible graphite bipolar plate and the like. Compared with metal bipolar plates, flexible graphite bipolar plates have the characteristics of high conductivity, corrosion resistance, light weight and the like, and have become the development focus of bipolar plates.
In the prior art, a method for preparing a graphite bipolar plate by using flexible graphite is to obtain a molded flexible graphite plate by performing processes of dipping, rinsing, curing and the like on a compression-molded graphite plate. In the rinsing process of the process flow, the surface of the flexible graphite plate needs to be cleaned by a surfactant and then by deionized water to remove the resin on the surface of the impregnated flexible graphite plate. In the rinsing process, an organic solvent surfactant and a large amount of deionized water are required, and thus a large amount of wastewater is generated, resulting in increased production costs and wastewater treatment costs. Meanwhile, in the cleaning process, due to the relative movement of the graphite bipolar plate, the tool and the cleaning liquid, the graphite plate is easy to scratch and damage the tool, so that the tool for storing the graphite plate is designed strictly. Furthermore, there is a risk of over-cleaning during cleaning with water, which will also affect the quality of the graphite bipolar plate.
Disclosure of Invention
The object of the present application is to provide a method and apparatus for cleaning a graphite bipolar plate.
Embodiments of the present application provide a method of cleaning a graphite bipolar plate, the method comprising: placing the graphite bipolar plate impregnated with the resin solution on a vacuum tray, and opening a vacuum control valve; opening a compressed air control valve, and distributing compressed air to the whole surface of the graphite bipolar plate through an air knife; and blowing an air knife from one end of the graphite bipolar plate to the other end of the graphite bipolar plate along the direction of the flow channel in the graphite bipolar plate; closing the vacuum control valve and turning over the graphite bipolar plate; and cleaning the other side of the graphite bipolar plate.
Further, the method further comprises: the pressure of the compressed air is controlled through the compressed air control valve, and the wind power at the wind knife is adjusted.
Further, the method further comprises: the pressure of the compressed air is adjusted to 0 to 0.7 mpa.
Further, the method further comprises: and collecting the resin solution obtained by blowing through a liquid discharge groove at the top end of the vacuum tray.
Further, the method further comprises: the resin solution is prevented from being splashed by the guard rail on the upper part of the vacuum tray.
Embodiments of the present application also provide an apparatus for cleaning a graphite bipolar plate, the apparatus including: the bottom of the vacuum tray is rectangular, and the upper part of the vacuum tray is provided with through holes which are uniformly distributed; a vacuum control valve located at a side of the vacuum tray; guard rails positioned above three sides of the vacuum tray and extending upward by the same length; and a liquid discharge groove which is positioned between the upper part of the vacuum tray and the side edge opposite to the opening of the vacuum tray.
Further, the device also comprises an air knife device which comprises an air knife part, a compressed air control valve and a compressed air pipeline.
Further, the apparatus further comprises: the pressure of the compressed air is controlled through the compressed air control valve, and the wind power at the wind knife is adjusted.
Further, the apparatus further comprises: the pressure of the compressed air is adjusted to 0 to 0.7 mpa.
By adopting the method and the device, the wastewater treatment cost can be reduced, the graphite bipolar plate is prevented from being damaged, and the risk of excessively cleaning the graphite bipolar plate is avoided.
Drawings
Fig. 1 shows a schematic view of the state when cleaning resin on a graphite bipolar plate according to an embodiment of the present application.
Fig. 2 shows a schematic view of a specific structure of an apparatus for cleaning a graphite bipolar plate.
Fig. 3 shows a schematic structural view of an air knife device that can be used in correspondence with the vacuum tray shown in fig. 2.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more apparent, the present application is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the application, its application, or uses. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.
The relative arrangement of the components and steps, the numerical expressions, and numerical values set forth in these embodiments do not limit the scope of the present application unless specifically stated otherwise. Meanwhile, it should be understood that the sizes of the respective portions shown in the drawings are not drawn in an actual proportional relationship for the convenience of description. Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate. In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.
Figure 1 shows a flow diagram of a method of making a graphite bipolar plate according to an embodiment of the present application. The diagram is merely an example and is not intended to limit the scope of what is claimed in this application.
In the first step, the flexible graphite bipolar plate soaked with the resin solution is placed on a vacuum tray, a vacuum control valve is opened, and at the moment, a gap between the graphite bipolar plate and the tray is in a vacuum state, so that the flexible graphite plate is fixed on the vacuum tray due to atmospheric pressure;
in a second step, the compressed air control valve is opened and compressed air can be distributed over the entire surface of the graphite bipolar plate by means of an air knife. The pressure of the compressed air (for example, the pressure of 0-0.7 MPa) can be controlled through the compressed air control valve, so that the wind power at the air knife is adjusted;
in the third step, the air knife sweeps slowly from one end of the graphite bipolar plate to the other end of the graphite bipolar plate along the direction of the flow channels in the graphite bipolar plate. Guard rails are provided around the vacuum tray to prevent the resin from being scattered. The top end of the vacuum tray is additionally provided with a groove containing a discharge port for collecting resin solution generated by purging and cleaning, and the excessive resin solution can be discharged through the discharge port and enter a wastewater treatment system;
in the fourth step, the vacuum valve is closed and the graphite bipolar plate is turned over. And (3) finishing purging and cleaning the other surface of the flexible graphite bipolar plate by adopting the same method and steps.
Compared with the prior scheme of cleaning the surface resin of the graphite bipolar plate, the technical scheme of the invention can obtain the following beneficial technical effects:
1) a large amount of deionized water is not consumed, and the wastewater treatment cost can be greatly reduced;
2) compared with the traditional cleaning of a surfactant and deionized water, the air knife is not contacted with the graphite plate, and no scratch damage is generated in the process of blowing and cleaning by dry air;
3) compared with the traditional surfactant and deionized water cleaning, the method has the advantages that compressed air is adopted for blowing, and only the residual resin solution on the surface of the flexible graphite bipolar plate is removed, so that the problem of excessive cleaning is avoided.
The present application also relates to an apparatus for cleaning a graphite bipolar plate. A schematic diagram of a specific structure of the apparatus is shown in fig. 2.
As shown in fig. 2, the apparatus includes:
the bottom of the vacuum tray is rectangular, and the upper part of the vacuum tray is provided with through holes which are uniformly distributed;
a vacuum control valve located at a side of the vacuum tray, when the graphite bipolar plate is placed above the vacuum tray, if the vacuum control valve is opened, air in a gap between the graphite bipolar plate and the vacuum tray is drawn through a through-hole above the vacuum tray, so that the gap between the graphite bipolar plate and the vacuum tray is in a vacuum state;
guard rails respectively extending upward from three sides of the vacuum tray by the same length for preventing resin from being splashed during a process of purging and cleaning a generated resin solution; the other side of the vacuum tray forms an opening for placing the graphite bipolar plate on the vacuum tray; and
and the liquid discharge groove is a groove-shaped gap formed between the upper part of the vacuum tray and the side edge opposite to the opening of the vacuum tray, and when the resin solution on the graphite bipolar plate is blown by an air knife, the resin solution enters the inner space between the upper plane and the lower plane of the vacuum tray through the liquid discharge groove.
Fig. 3 shows a schematic structural view of an air knife device that can be used in correspondence with the vacuum tray shown in fig. 2.
As shown in fig. 3, the air knife device includes an air knife portion, a compressed air control valve, and a compressed air line. When the compressed air control valve is opened, compressed air enters the air knife portion through the compressed air line, which then distributes the compressed air over the entire surface of the graphite bipolar plate. The pressure of the compressed air (for example, the pressure of 0-0.7 MPa) can be controlled by adjusting the compressed air control valve, so that the wind power at the wind knife part can be adjusted.
The technical features of the above embodiments can be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the above embodiments are not described, but should be considered as the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, which falls within the scope of protection of the present application. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (9)
1. A method of cleaning a graphite bipolar plate, the method comprising:
placing the graphite bipolar plate impregnated with the resin solution on a vacuum tray, and opening a vacuum control valve;
opening a compressed air control valve, and distributing compressed air to the whole surface of the graphite bipolar plate through an air knife; and
blowing an air knife from one end of the graphite bipolar plate to the other end of the graphite bipolar plate along the direction of the flow channel in the graphite bipolar plate;
closing the vacuum control valve and turning over the graphite bipolar plate; and
and cleaning the other side of the graphite bipolar plate.
2. The method of claim 1, wherein:
the pressure of the compressed air is controlled through the compressed air control valve, and the wind power at the wind knife is adjusted.
3. The method of claim 1, wherein:
the pressure of the compressed air is adjusted to 0 to 0.7 mpa.
4. The method of claim 1, wherein:
and collecting the resin solution obtained by blowing through a liquid discharge groove at the top end of the vacuum tray.
5. The method of claim 1, wherein:
the resin solution is prevented from being splashed by the guard rail on the upper part of the vacuum tray.
6. An apparatus for cleaning a graphite bipolar plate, the apparatus comprising:
the bottom of the vacuum tray is rectangular, and the upper part of the vacuum tray is provided with through holes which are uniformly distributed;
a vacuum control valve located at a side of the vacuum tray;
guard rails positioned above three sides of the vacuum tray and extending upward by the same length; and
and the liquid discharge groove is positioned between the upper part of the vacuum tray and the side edge opposite to the opening of the vacuum tray.
7. The apparatus of claim 6, wherein:
the device also includes an air knife device including an air knife portion, a compressed air control valve, and a compressed air line.
8. The apparatus of claim 7, wherein:
the pressure of the compressed air is controlled through the compressed air control valve, and the wind power at the wind knife is adjusted.
9. The apparatus of claim 7, wherein:
the pressure of the compressed air is adjusted to 0 to 0.7 mpa.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010115953.8A CN113369238B (en) | 2020-02-25 | 2020-02-25 | Method and device for cleaning graphite bipolar plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010115953.8A CN113369238B (en) | 2020-02-25 | 2020-02-25 | Method and device for cleaning graphite bipolar plate |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113369238A true CN113369238A (en) | 2021-09-10 |
| CN113369238B CN113369238B (en) | 2022-09-16 |
Family
ID=77569237
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010115953.8A Active CN113369238B (en) | 2020-02-25 | 2020-02-25 | Method and device for cleaning graphite bipolar plate |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113369238B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114864983A (en) * | 2022-01-27 | 2022-08-05 | 上海神力科技有限公司 | Flexible graphite polar plate for fuel cell and preparation method and application thereof |
| CN115625145A (en) * | 2022-10-08 | 2023-01-20 | 广东环华氢能科技有限公司 | Flexible graphite bipolar plate cleaning process |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101196809B1 (en) * | 2012-03-12 | 2012-11-06 | 임선빈 | Cleaning device and method for works of press mold |
| CN202610326U (en) * | 2012-05-22 | 2012-12-19 | 中节能太阳能科技有限公司 | On-line blowing device of plate type plasma enhanced chemical vapor deposition (PECVD) coating of crystalline silicon solar cell |
| CN108325881A (en) * | 2018-02-28 | 2018-07-27 | 广东国鸿氢能科技有限公司 | Graphite bi-polar plate auto-cleaner |
| CN109560303A (en) * | 2018-11-03 | 2019-04-02 | 上海弘枫实业有限公司 | A kind of runner treatment process of graphite bi-polar plate |
| CN209708957U (en) * | 2019-06-19 | 2019-11-29 | 杭州纤纳光电科技有限公司 | A kind of electro-conductive glass cleaning device |
-
2020
- 2020-02-25 CN CN202010115953.8A patent/CN113369238B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101196809B1 (en) * | 2012-03-12 | 2012-11-06 | 임선빈 | Cleaning device and method for works of press mold |
| CN202610326U (en) * | 2012-05-22 | 2012-12-19 | 中节能太阳能科技有限公司 | On-line blowing device of plate type plasma enhanced chemical vapor deposition (PECVD) coating of crystalline silicon solar cell |
| CN108325881A (en) * | 2018-02-28 | 2018-07-27 | 广东国鸿氢能科技有限公司 | Graphite bi-polar plate auto-cleaner |
| CN109560303A (en) * | 2018-11-03 | 2019-04-02 | 上海弘枫实业有限公司 | A kind of runner treatment process of graphite bi-polar plate |
| CN209708957U (en) * | 2019-06-19 | 2019-11-29 | 杭州纤纳光电科技有限公司 | A kind of electro-conductive glass cleaning device |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114864983A (en) * | 2022-01-27 | 2022-08-05 | 上海神力科技有限公司 | Flexible graphite polar plate for fuel cell and preparation method and application thereof |
| CN115625145A (en) * | 2022-10-08 | 2023-01-20 | 广东环华氢能科技有限公司 | Flexible graphite bipolar plate cleaning process |
Also Published As
| Publication number | Publication date |
|---|---|
| CN113369238B (en) | 2022-09-16 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US5752988A (en) | Method for producing electrode unit for fuel cell | |
| CN110350227B (en) | Fuel cell end plate with hydrogen-water separation function | |
| CN113369238A (en) | Method and device for cleaning graphite bipolar plate | |
| JP2001504979A (en) | Liquid-cooled fuel cell battery | |
| KR101394255B1 (en) | Redox flow battery and operration method of the same | |
| JP5941791B2 (en) | Fuel cell system | |
| CN105322216B (en) | Preparation method of electrochemical cell | |
| KR101575415B1 (en) | Performance recovery method for fuel cell stack | |
| KR20170127848A (en) | The Redox flow battery including inner cover | |
| EP1821360A2 (en) | Method of cleaning fuel cell | |
| CN115425242A (en) | Carbon paper homogenizing hydrophobic treatment device and carbon paper hydrophobic curing process | |
| CN113488712A (en) | Discharging device and method for intermittent closed power lithium battery | |
| CN113793953B (en) | Fuel cell system and quick shutdown method thereof | |
| KR102657391B1 (en) | Oil extraction and solvent drying system for manufacturing secondary battery separator | |
| KR20180079933A (en) | Cleaning Device for Prismatic Battery Cell Having Roller Coated with Organic Solvent | |
| CN111261900B (en) | Activation method of cathode open type air-cooled fuel cell membrane electrode | |
| CN115475408B (en) | Wet diaphragm extraction device and process | |
| CN108155389B (en) | Preparation method of graphite felt electrode material for self-flow-channel flow battery | |
| CA2518059A1 (en) | Manufacturing process and apparatus for electrically insulating layers of electrochemical cell laminates | |
| CN101714643B (en) | Material design to enable high mid-temperature performance of a fuel cell with ultrathin electrodes | |
| JP2010086851A (en) | Method for aging polymer electrolyte fuel cell | |
| CN210182489U (en) | Closed-pore enhanced treatment system for graphite polar plate of fuel cell | |
| KR101601377B1 (en) | A heat exchange unit of suppling air to fuel cell cathod and a heat exchange method thereof | |
| CN209941103U (en) | Lithium battery cell cleaning device | |
| CN101561389B (en) | Method for imaging the ionomer spatial distribution in fuel cell electrodes |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |