CN113877894A - Laser cleaning device and cleaning method for bipolar plate of fuel cell - Google Patents
Laser cleaning device and cleaning method for bipolar plate of fuel cell Download PDFInfo
- Publication number
- CN113877894A CN113877894A CN202111035693.4A CN202111035693A CN113877894A CN 113877894 A CN113877894 A CN 113877894A CN 202111035693 A CN202111035693 A CN 202111035693A CN 113877894 A CN113877894 A CN 113877894A
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- Prior art keywords
- module
- laser
- bipolar plate
- cleaned
- control module
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- Pending
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- 238000004140 cleaning Methods 0.000 title claims abstract description 56
- 239000000446 fuel Substances 0.000 title claims abstract description 26
- 238000000034 method Methods 0.000 title claims abstract description 20
- 230000008859 change Effects 0.000 claims description 6
- 238000001816 cooling Methods 0.000 claims description 6
- 230000007246 mechanism Effects 0.000 claims description 6
- 238000007254 oxidation reaction Methods 0.000 claims description 4
- 230000009471 action Effects 0.000 claims description 3
- 230000003647 oxidation Effects 0.000 claims description 3
- 238000005096 rolling process Methods 0.000 claims description 3
- 239000003344 environmental pollutant Substances 0.000 description 7
- 231100000719 pollutant Toxicity 0.000 description 7
- 239000002184 metal Substances 0.000 description 6
- 239000000126 substance Substances 0.000 description 5
- 239000011248 coating agent Substances 0.000 description 4
- 238000000576 coating method Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 230000003749 cleanliness Effects 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 230000035939 shock Effects 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 239000012634 fragment Substances 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 239000010410 layer Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 231100000572 poisoning Toxicity 0.000 description 1
- 230000000607 poisoning effect Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000002344 surface layer Substances 0.000 description 1
- 238000004506 ultrasonic cleaning Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B7/00—Cleaning by methods not provided for in a single other subclass or a single group in this subclass
- B08B7/0035—Cleaning by methods not provided for in a single other subclass or a single group in this subclass by radiant energy, e.g. UV, laser, light beam or the like
- B08B7/0042—Cleaning by methods not provided for in a single other subclass or a single group in this subclass by radiant energy, e.g. UV, laser, light beam or the like by laser
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/08—Devices involving relative movement between laser beam and workpiece
- B23K26/082—Scanning systems, i.e. devices involving movement of the laser beam relative to the laser head
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/70—Auxiliary operations or equipment
- B23K26/702—Auxiliary equipment
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K2101/00—Articles made by soldering, welding or cutting
- B23K2101/36—Electric or electronic devices
Landscapes
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Engineering & Computer Science (AREA)
- Plasma & Fusion (AREA)
- Mechanical Engineering (AREA)
- Fuel Cell (AREA)
- Cleaning In General (AREA)
Abstract
The invention relates to a fuel cell bipolar plate laser cleaning device and a cleaning method, comprising a circulation module, a scanning module, a laser cleaning module and a control module in control connection with the three modules, wherein the scanning module and the laser cleaning module are arranged above the circulation module; the cleaning steps are as follows: placing a processing object on a conveying belt, and moving the processing object to the lower part of a scanning module through a control module; step two, the control module controls the scanning module to scan and capture images of the processing object, and compares the captured images and scanning results with standard processing objects in the database to identify the polluted and oxidized parts needing to be cleaned; and step three, the control module adjusts the laser cleaning module and the scanning module according to an instruction sent by the identification and comparison result, and controls the laser to send high-energy laser with proper power to the part needing to be cleaned so as to clean the polluted and oxidized part. The invention can clean the fuel battery bipolar plate with precision, high efficiency and low cost.
Description
Technical Field
The invention relates to a cleaning device and a cleaning method for a bipolar plate of a fuel cell, belonging to the technical field of laser application.
Background
To ensure proper operation of the stack and the needs of commercial applications, the bipolar plates must meet the following requirements: 1. the structure is stable, and the service life is long; 2. the strength is high, and the mechanical property is good; 3. the polar plate material needs to be stable and does not contain easily decomposed substances, particularly components which can cause catalyst poisoning; 4. the conductivity is required to be higher, and the surface is flat, smooth and pollution-free; 5. the corrosion resistance is strong; 6. short processing period and low cost.
At present, under the existing production technical conditions, the bipolar plate usually needs to be covered with a coating, but because the metal surface of the bipolar plate is inevitably polluted, the coating and the metal are not well combined, and further, the corrosion resistance is reduced and the oxidation reaction is caused. And metal surface contamination or oxidation can cause: the resistance is increased, the metal and the coating are not tightly combined, and the product performance is reduced.
The existing cleaning modes are mainly divided into three types: 1. mechanical cleaning; 2. chemical cleaning (commonly used); 3. and (4) ultrasonic cleaning. There are inevitable drawbacks to all three approaches: 1. mechanical cleaning-surface damage, limited cleanliness; 2. chemical cleaning-environmental pollution, high cost and corrosiveness; 3. ultrasonic cleaning-narrow size adaptability, can not remove submicron-scale pollutants, and is difficult to dry.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: provides a fuel cell bipolar plate laser cleaning device and a cleaning method which can avoid the surface damage of the bipolar plate as much as possible.
In order to solve the technical problems, the technical scheme provided by the invention is as follows: a laser cleaning device for a fuel cell bipolar plate comprises a circulation module, a scanning module, a laser cleaning module and a control module,
the circulation module comprises a belt conveying mechanism driven by a rolling machine and an inductor arranged on a rack, a plurality of fixed marks are uniformly arranged on a conveying belt of the belt conveying mechanism, and the inductor is matched with the fixed marks;
the scanning module comprises a scanning galvanometer and a camera which are driven by a scanning galvanometer control card, and the camera captures images of a preset area on the conveying belt through the angle change of the scanning galvanometer;
the laser cleaning module comprises a laser emitter, and laser emitted by the laser emitter is reflected to a part needing to be cleaned through a scanning galvanometer;
the control module is used for receiving the image captured by the scanning module, comparing the image with the image of the standard part and identifying the part needing to be cleaned;
the control module is also used for controlling the scanning galvanometer control card and driving the angle change of the scanning galvanometer;
the control module is also used for receiving the trigger signal of the sensor and controlling the action of the reel machine.
The laser cleaning device for the fuel cell bipolar plate is characterized in that an air exhaust system is arranged at the tail part of the circulation module.
The laser cleaning device for the fuel cell bipolar plate further comprises a cooling module for cooling the laser emitter.
The laser cleaning device for the fuel cell bipolar plate further adopts a belt or a chain belt as the conveying belt.
In order to solve the technical problems, the second technical scheme provided by the invention is as follows: a laser cleaning method of a fuel cell bipolar plate using the device of claim 1, comprising the steps of:
the method comprises the following steps that firstly, a bipolar plate to be cleaned is placed on a conveying belt, a sensor senses a fixed mark on the conveying belt and then sends a trigger signal to a control module, the control module controls a reel machine to drive the conveying belt to move for a fixed distance, and the bipolar plate to be cleaned just moves to a preset area below a scanning galvanometer;
secondly, the control module controls the scanning galvanometer and the camera to start working, scans and captures images of the bipolar plate to be cleaned, compares the captured images with images of a standard part and identifies the part to be cleaned;
and step three, the control module controls the scanning galvanometer and the laser emitter to work, adjusts the vibration direction and the vibration frequency of the scanning galvanometer according to the position and the size of the part to be cleaned, and controls the laser emitter to emit laser with proper power to the part to be cleaned, so that the cleaning work is completed.
The method for cleaning the fuel cell bipolar plate by using the laser further comprises the step of cleaning the parts needing to be cleaned, wherein the parts needing to be cleaned comprise polluted parts and oxidized parts.
The invention has the following beneficial effects: a method for cleaning a fuel cell bipolar plate by laser comprises the steps of sensing and positioning through a circulation module, accurately identifying stains on the fuel cell bipolar plate through a scanning module, feeding back a control module, controlling the laser cleaning module to be accurately positioned by the control module, sending laser with proper power to a part needing to be cleaned to clean a polluted part and an oxidized part, accurately cleaning local stains, avoiding damage to other parts, needing no cleaning solution or other chemical solution and needing no drying; the method has the advantages of rapidness, high efficiency, low cost, no secondary pollution, suitability for fuel cell bipolar plates of various sizes, no damage to the surface of a base material, high surface cleanliness, capability of treating submicron-scale pollutants and stubborn pollutants with strong surface adhesion.
Detailed Description
Examples
The laser cleaning device for the bipolar plate of the fuel cell comprises a circulation module, a scanning module, a laser cleaning module and a control module,
the circulation module comprises a belt conveying mechanism driven by a rolling machine and an inductor arranged on a rack, a plurality of fixed marks are uniformly arranged on a conveying belt of the belt conveying mechanism, and the inductor is matched with the fixed marks;
the scanning module comprises a scanning galvanometer and a camera which are driven by a scanning galvanometer control card, and the camera captures images of a preset area on the conveying belt through the angle change of the scanning galvanometer;
the laser cleaning module comprises a laser emitter, and laser emitted by the laser emitter is reflected to a part needing to be cleaned through a scanning galvanometer;
the control module is used for receiving the image captured by the scanning module, comparing the image with the image of the standard part and identifying the part needing to be cleaned;
the control module is also used for controlling the scanning galvanometer control card and driving the angle change of the scanning galvanometer;
the control module is also used for receiving the trigger signal of the sensor and controlling the action of the reel machine.
And an air exhaust system is arranged at the tail part of the circulation module and is used for sucking away waste materials in the cleaning process.
Still including the cooling module that is used for cooling down laser emitter, guarantee that laser emitter can continuous stable work when long-time operation.
The conveying belt adopts a belt or a chain belt.
The control module comprises a microcomputer and output equipment, and the internal database of the microcomputer inputs corresponding standard processing object data.
In a second embodiment, a method for laser cleaning a bipolar plate of a fuel cell using the apparatus of the first embodiment includes the following steps:
the method comprises the following steps that firstly, a bipolar plate to be cleaned is placed on a conveying belt, a sensor senses a fixed mark on the conveying belt and then sends a trigger signal to a control module, the control module controls a reel machine to drive the conveying belt to move for a fixed distance, and the bipolar plate to be cleaned just moves to a preset area below a scanning galvanometer;
secondly, the control module controls the scanning galvanometer and the camera to start working, scans and captures images of the bipolar plate to be cleaned, compares the captured images with images of a standard part and identifies the part to be cleaned;
and step three, the control module controls the scanning galvanometer and the laser emitter to work, adjusts the vibration direction and the vibration frequency of the scanning galvanometer according to the position and the size of the part to be cleaned, and controls the laser emitter to emit laser with proper power to the part to be cleaned, so that the cleaning work is completed.
The three steps are repeated to realize the cleaning of the processed object without stopping circulation.
The part needing cleaning comprises a pollution part and an oxidation part.
The applicant carries out cleaning experiments on the bipolar plate, fine burrs on the surface of the bipolar plate can be directly gasified and removed by the laser cleaning method, the surface of a part is smoother while the surface layer of the material is cleaned by the cleaning method, the adhesive force and the heat dissipation performance of the coating are greatly enhanced, and the electric conductivity can be improved by 60%.
The working principle of the invention is as follows: the high-energy light beam generated by the laser emitter is absorbed by a pollution layer on the surface to be treated; the rapid energy absorption generates plasma and metastable ionized gas which are expanded sharply, and shock waves are generated; the shock wave smashes the pollutants and makes the pollutants form fragments which are removed; accurate control of laser light pulse width to avoid thermal and physical damage to the treated surface; experiments have shown that plasma is generated at the metal surface when there is oxide on the metal surface.
The invention has the following beneficial effects: a method for cleaning a fuel cell bipolar plate by laser comprises the steps of sensing and positioning through a circulation module, accurately identifying stains on the fuel cell bipolar plate through a scanning module, feeding back a control module, controlling the laser cleaning module to be accurately positioned by the control module, sending laser with proper power to a part needing to be cleaned to clean a polluted part and an oxidized part, accurately cleaning local stains, avoiding damage to other parts, needing no cleaning solution or other chemical solution and needing no drying; the method has the advantages of rapidness, high efficiency, low cost, no secondary pollution, suitability for fuel cell bipolar plates of various sizes, no damage to the surface of a base material, high surface cleanliness, capability of treating submicron-scale pollutants and stubborn pollutants with strong surface adhesion.
The present invention is not limited to the specific technical solutions described in the above embodiments, and other embodiments may be made in the present invention in addition to the above embodiments. It will be understood by those skilled in the art that various changes, substitutions of equivalents, and alterations can be made without departing from the spirit and scope of the invention.
Claims (6)
1. A fuel cell bipolar plate laser cleaning device is characterized in that: comprises a circulation module, a scanning module, a laser cleaning module and a control module,
the circulation module comprises a belt conveying mechanism driven by a rolling machine and an inductor arranged on a rack, a plurality of fixed marks are uniformly arranged on a conveying belt of the belt conveying mechanism, and the inductor is matched with the fixed marks;
the scanning module comprises a scanning galvanometer and a camera which are driven by a scanning galvanometer control card, and the camera captures images of a preset area on the conveying belt through the angle change of the scanning galvanometer;
the laser cleaning module comprises a laser emitter, and laser emitted by the laser emitter is reflected to a part needing to be cleaned through a scanning galvanometer;
the control module is used for receiving the image captured by the scanning module, comparing the image with the image of the standard part and identifying the part needing to be cleaned;
the control module is also used for controlling the scanning galvanometer control card and driving the angle change of the scanning galvanometer;
the control module is also used for receiving the trigger signal of the sensor and controlling the action of the reel machine.
2. The fuel cell bipolar plate laser cleaning apparatus according to claim 1, wherein: the tail of the circulation module is provided with an air draft system.
3. The fuel cell bipolar plate laser cleaning apparatus according to claim 1, wherein: the laser transmitter further comprises a cooling module for cooling the laser transmitter.
4. The fuel cell bipolar plate laser cleaning apparatus according to claim 1, wherein: the conveying belt adopts a belt or a chain belt.
5. A laser cleaning method of a fuel cell bipolar plate using the device of claim 1, comprising the steps of:
the method comprises the following steps that firstly, a bipolar plate to be cleaned is placed on a conveying belt, a sensor senses a fixed mark on the conveying belt and then sends a trigger signal to a control module, the control module controls a reel machine to drive the conveying belt to move for a fixed distance, and the bipolar plate to be cleaned just moves to a preset area below a scanning galvanometer;
secondly, the control module controls the scanning galvanometer and the camera to start working, scans and captures images of the bipolar plate to be cleaned, compares the captured images with images of a standard part and identifies the part to be cleaned;
and step three, the control module controls the scanning galvanometer and the laser emitter to work, adjusts the vibration direction and the vibration frequency of the scanning galvanometer according to the position and the size of the part to be cleaned, and controls the laser emitter to emit laser with proper power to the part to be cleaned, so that the cleaning work is completed.
6. The fuel cell bipolar plate laser cleaning method as claimed in claim 5, wherein: the part needing cleaning comprises a pollution part and an oxidation part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111035693.4A CN113877894A (en) | 2021-09-06 | 2021-09-06 | Laser cleaning device and cleaning method for bipolar plate of fuel cell |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111035693.4A CN113877894A (en) | 2021-09-06 | 2021-09-06 | Laser cleaning device and cleaning method for bipolar plate of fuel cell |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113877894A true CN113877894A (en) | 2022-01-04 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111035693.4A Pending CN113877894A (en) | 2021-09-06 | 2021-09-06 | Laser cleaning device and cleaning method for bipolar plate of fuel cell |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113877894A (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
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2021
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|---|---|---|---|---|
| CN104411603A (en) * | 2012-07-11 | 2015-03-11 | 德马泰克公司 | Crossbelt sorter system and method of sorting articles |
| CN107199251A (en) * | 2017-07-06 | 2017-09-26 | 武汉翔明激光科技有限公司 | A kind of laser cleaner |
| US20190314871A1 (en) * | 2018-04-13 | 2019-10-17 | Industrial Technology Research Institute | Laser cleaning apparatus and laser cleaning method |
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20220104 |
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| RJ01 | Rejection of invention patent application after publication |