CN110246787B - Battery piece surface foreign matter cleaning device - Google Patents
Battery piece surface foreign matter cleaning device Download PDFInfo
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- CN110246787B CN110246787B CN201910565153.3A CN201910565153A CN110246787B CN 110246787 B CN110246787 B CN 110246787B CN 201910565153 A CN201910565153 A CN 201910565153A CN 110246787 B CN110246787 B CN 110246787B
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- 238000004140 cleaning Methods 0.000 title claims abstract description 14
- 238000010926 purge Methods 0.000 claims abstract description 31
- 238000001514 detection method Methods 0.000 claims abstract description 26
- 238000007664 blowing Methods 0.000 claims description 30
- 230000007246 mechanism Effects 0.000 claims description 19
- 238000000034 method Methods 0.000 claims description 5
- 230000009471 action Effects 0.000 claims description 3
- 230000001276 controlling effect Effects 0.000 claims description 3
- 230000001105 regulatory effect Effects 0.000 claims description 3
- 239000012634 fragment Substances 0.000 abstract description 10
- 238000007650 screen-printing Methods 0.000 description 19
- 238000004364 calculation method Methods 0.000 description 7
- 238000006073 displacement reaction Methods 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 6
- 238000012546 transfer Methods 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 3
- 238000004880 explosion Methods 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 238000005259 measurement Methods 0.000 description 3
- 238000007639 printing Methods 0.000 description 3
- 238000013461 design Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000001960 triggered effect Effects 0.000 description 2
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000001939 inductive effect Effects 0.000 description 1
- 230000000977 initiatory effect Effects 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000013082 photovoltaic technology Methods 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 230000037452 priming Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 235000012431 wafers Nutrition 0.000 description 1
Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
- H01L21/67—Apparatus specially adapted for handling semiconductor or electric solid state devices during manufacture or treatment thereof; Apparatus specially adapted for handling wafers during manufacture or treatment of semiconductor or electric solid state devices or components ; Apparatus not specifically provided for elsewhere
- H01L21/67005—Apparatus not specifically provided for elsewhere
- H01L21/67011—Apparatus for manufacture or treatment
- H01L21/67017—Apparatus for fluid treatment
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
- H01L21/67—Apparatus specially adapted for handling semiconductor or electric solid state devices during manufacture or treatment thereof; Apparatus specially adapted for handling wafers during manufacture or treatment of semiconductor or electric solid state devices or components ; Apparatus not specifically provided for elsewhere
- H01L21/67005—Apparatus not specifically provided for elsewhere
- H01L21/67011—Apparatus for manufacture or treatment
- H01L21/67017—Apparatus for fluid treatment
- H01L21/67028—Apparatus for fluid treatment for cleaning followed by drying, rinsing, stripping, blasting or the like
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
- H01L21/67—Apparatus specially adapted for handling semiconductor or electric solid state devices during manufacture or treatment thereof; Apparatus specially adapted for handling wafers during manufacture or treatment of semiconductor or electric solid state devices or components ; Apparatus not specifically provided for elsewhere
- H01L21/67005—Apparatus not specifically provided for elsewhere
- H01L21/67242—Apparatus for monitoring, sorting or marking
- H01L21/67259—Position monitoring, e.g. misposition detection or presence detection
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
- H01L21/67—Apparatus specially adapted for handling semiconductor or electric solid state devices during manufacture or treatment thereof; Apparatus specially adapted for handling wafers during manufacture or treatment of semiconductor or electric solid state devices or components ; Apparatus not specifically provided for elsewhere
- H01L21/677—Apparatus specially adapted for handling semiconductor or electric solid state devices during manufacture or treatment thereof; Apparatus specially adapted for handling wafers during manufacture or treatment of semiconductor or electric solid state devices or components ; Apparatus not specifically provided for elsewhere for conveying, e.g. between different workstations
- H01L21/67703—Apparatus specially adapted for handling semiconductor or electric solid state devices during manufacture or treatment thereof; Apparatus specially adapted for handling wafers during manufacture or treatment of semiconductor or electric solid state devices or components ; Apparatus not specifically provided for elsewhere for conveying, e.g. between different workstations between different workstations
- H01L21/67715—Changing the direction of the conveying path
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L31/00—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
- H01L31/18—Processes or apparatus specially adapted for the manufacture or treatment of these devices or of parts thereof
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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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- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
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- Microelectronics & Electronic Packaging (AREA)
- Power Engineering (AREA)
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- Geophysics And Detection Of Objects (AREA)
- Length Measuring Devices With Unspecified Measuring Means (AREA)
Abstract
The invention discloses a battery piece surface foreign matter cleaning device, which comprises a conveying track, a foreign matter detection device and a purging device, wherein the foreign matter detection device comprises a distance sensor and a controller connected with the distance sensor, the purging device comprises an air pipe arranged on the conveying track and an air source connected with the air pipe, and one or more air outlets are formed in the air pipe; the transmitter of the distance sensor transmits signals to the conveying track in a set direction to detect the distance between the transmitter and the battery piece on the conveying track, and the controller receives the detection result of the distance sensor and controls the on-off between the air source and the air pipe and/or the opening and closing of the air outlet on the air pipe. According to the device for cleaning the foreign matters on the surface of the battery piece, the distance between the highest point and the lowest point of the foreign matters on the battery piece is measured through the distance sensor, whether the battery piece is stained with fragments or not is judged, and the battery piece is purged through the purging device.
Description
Technical Field
The invention belongs to the technical field of solar cell manufacturing, and particularly relates to a device for cleaning foreign matters on the surface of a cell.
Background
The newly increased photovoltaic grid-connected installation capacity of China reaches 44GW, the accumulated grid-connected installation capacity exceeds 174GW, and the newly increased and accumulated grid-connected installation are global first. Various data show that we have become the manufacturing and use major country of the photovoltaic industry. International photovoltaic technology line (International Technology Roadmap for Photovoltaic, ITRPV) 2019 indicates that global installed capacity in 2018 reaches 109GW. Photovoltaic power generation is becoming the dominant force of new energy industries.
Silicon wafers, screens, slurries and the like involved in the production process of solar cells are also important materials. For the current mainstream battery technology, screen printing is an important ring in the battery production link, and the cost occupied by the consumption of screen paste in the link is larger. The screen printing plate has a large consumption amount and a large field operation environment, and the explosion (screen printing plate breakage) caused by foreign matters is one reason for the large screen printing plate consumption amount, and particularly for the screen printing plate for printing the front grid line, the screen printing plate is high in price, the service life of the screen printing plate is controlled to be an effective way for reducing the cost, and the most direct method is to prevent the battery piece stained with the foreign matters such as fragments from entering the screen printing step.
Disclosure of Invention
In view of the above, in order to overcome the defects of the prior art, the present invention provides a device for cleaning the surface of a battery piece, which can accurately detect whether the surface of the battery piece is stained with the foreign matter and clean the foreign matter by purging.
In order to achieve the above purpose, the present invention adopts the following technical scheme:
the device comprises a conveying track, a driving mechanism for driving the conveying track to run, a foreign matter detection device and a purging device, wherein the foreign matter detection device comprises a distance sensor and a controller connected with the distance sensor, the purging device comprises an air pipe arranged on the conveying track and an air source connected with the air pipe, and one or more air outlets are formed in the air pipe; under the drive action of the drive mechanism, the conveying track is used for sequentially conveying the battery pieces along the conveying direction, the distance sensor is arranged above the conveying track, the transmitter of the distance sensor transmits signals to the conveying track in a set direction so as to detect the distance between the transmitter and the battery pieces on the conveying track, and the controller receives the detection result of the distance sensor and controls the on-off between the air source and the air pipe and/or the opening and closing of the air outlet on the air pipe according to the detection result. The air pipe is of a tubular structure with a hollow inside and a closed side, one side of the opening is connected with an air pipe, the air pipe is connected with a compressed air compressor, and a flow regulating valve for controlling purging strength is further arranged between the air pipe and the air compressor. The gas source is a high pressure gas source, which is a compressed gas produced by an air compressor.
And the controller receives the distance and judges that if the distance is smaller than a preset distance threshold value, the corresponding battery piece surface is judged to have foreign matters. The distance between the surface of the battery piece or the foreign matters on the battery piece and the distance sensor is detected in real time through the distance sensor, so that whether the surface of the battery piece is stained with the foreign matters such as fragments or not is judged, and the foreign matters are removed through the blowing device.
The detection device further comprises an inductor for inducing whether the battery piece is arranged on the conveying track or not, and the inductor is connected with the controller. The sensor is used for sensing whether a battery piece exists on the conveying track, and when the battery piece is sensed, the sensor sends a signal to the controller, and the controller receives the signal and controls the conveying track to run and controls the distance sensor to work. The sensor is arranged below the conveying track, and the distance sensor is arranged above the conveying track.
Preferably, the purging device further comprises an electromagnetic switch arranged between the air pipe and the air source, and the electromagnetic switch is connected with the controller. The electromagnetic switch is controlled by the controller, so that whether the battery piece is purged by the purging device is controlled.
More preferably, a standard distance H between the distance controller and the conveying track is preset in the controller, the distance sensor detects the surface of the battery piece or a distance L between a foreign object located on the battery piece and the distance sensor in real time, the distance L is converted into a distance signal and is transmitted to the controller, the controller receives the distance signal and screens the minimum distance Li in the distance L, the value of H-Li is calculated, when H-Li is greater than or equal to k×2d, the foreign object is located on the battery piece, k is an error coefficient, and D is the thickness of the battery piece.
Further preferably, the error coefficient k is 0.8-1.0.
Further preferably, when H-Li is equal to or greater than k×2d, the controller sends an on command to the electromagnetic switch, and the electromagnetic switch is turned on. The electromagnetic switch is controlled to be turned on and off by the controller, so that the energy consumption can be reduced, and the production cost is further reduced.
Preferably, the distance sensor is a line scanning type distance sensor, and the line scanning length of the distance sensor is greater than or equal to the length of the battery piece in the width direction of the conveying track; the blowing width of the air pipe is larger than or equal to the length of the battery piece in the width direction of the conveying track. The limitation of the line scanning length to be greater than or equal to the width of the battery piece can ensure the comprehensiveness and the accuracy of detection, and if only the detection of points is similar to the form of spot check, the accuracy of detection cannot be ensured. The limiting purge width is larger than or equal to the width of the battery piece, so that the battery piece can be completely purged, incomplete purging is prevented, and foreign matters are still adhered to the battery piece.
Preferably, the air outlets are uniformly distributed on the air pipe.
Preferably, the air outlet is correspondingly provided with an air blowing nozzle.
More preferably, the blowing nozzle is in a horn shape, and the opening size of one side of the blowing nozzle far away from the air pipe is larger than the opening size of one side of the blowing nozzle near to the air pipe. That is, the opening of the horn-shaped air blowing nozzle faces to the outer side, so that the gas can sweep the surface of the battery piece in a larger range, and the air blowing nozzle and the battery piece are at a certain angle, and the wind blown out by the air blowing nozzle can be at a certain angle with the battery piece, so that the foreign matters on the surface of the battery piece can be blown away more conveniently.
In some embodiments, the angle of the blowing nozzle may also be set in an adjustable manner, as follows: the two ends of the air pipe can be rotatably arranged, so that the air pipe can relatively rotate, and the integral angle adjustment of the blowing nozzle on the same air pipe can be realized, so that a better blowing effect can be realized. The realization of rotation can be driven by a gear and a rack to be more automatic.
Preferably, the distance sensor comprises a transmitter, a receiver and a digital signal processor. In some embodiments, a laser displacement sensor is selected, including a laser transmitter, a laser receiver, and a digital signal processor. When the laser displacement sensor receives the signal of the controller, the internal laser transmitter transmits laser, the scanning area of the laser is larger than the area of the measured battery piece or the line scanning length of the laser is larger than or equal to the length of the measured battery piece in the width direction of the conveying track, the laser returns to the laser receiver after reaching the upper surface of the battery piece, and the digital signal processor calculates the actual distance L between the transmitting position and the upper surface of the battery piece and converts the distance L into a distance signal to be conveyed to the controller.
The controller includes a computing module. The standard distance H between the distance controller and the conveying track is preset in the controller. The controller receives a distance signal transmitted by the distance sensor and screens the minimum distance Li in the distance L, a calculation module of the controller calculates the minimum distance Li obtained by measuring the displacement sensor, the minimum distance Li is brought into a judgment formula H-Li not less than k x 2D, k is an error coefficient, k is 0.8-1.0, and D is the thickness of the battery piece. When H-Li is greater than or equal to k and is equal to 2D, the battery piece is provided with foreign matters. If the thickness of the battery sheet is 170 μm, if k is 1.0, it is determined that the battery sheet is contaminated with foreign matter when H-Li is not less than 340 μm (twice the thickness of the battery sheet), but since there is a certain error in the thickness of the battery sheet and the distance sensor, the error coefficient k is preferably 0.8, that is, when H-Li is not less than 272 μm, it is determined that the battery sheet is contaminated with foreign matter. At this time, the controller controls the opening of the electromagnetic switch, sweeps the battery piece to remove the foreign matter, prevents that this battery piece from getting into the silk screen printing device and leading the initiating board.
In some embodiments, the detection device may further comprise an alarm coupled to the controller. When the controller calculates that H-Li is more than or equal to k 2D, the battery piece is provided with foreign matters, the controller sends an alarm instruction to the alarm, and the alarm receives the alarm instruction and gives an alarm so as to play a role in warning, and the foreign matters can be confirmed to be removed through manual work. In some embodiments, the controller is further connected to a driving mechanism that drives the conveying rail, and when the foreign object detection device detects that the battery piece has a foreign object, the controller sends a speed reducing instruction to the driving mechanism, and the driving mechanism controls the running speed of the conveying rail to be reduced, so that the purging device can function better.
When the screen printing device is used for the first time, the sensor is required to be triggered manually to sense, so that the distance H between the screen printing device and the screen printing track is measured by the distance sensor, and the H value is required to be recalibrated only when the position of the distance sensor is changed. When the sensor senses the battery piece in normal use, the sensor sends a signal to the controller, the controller receives the signal and controls the transmission track to operate and controls the distance sensor to work, the digital signal processor of the distance sensor calculates the actual distance L between the transmitting position and the upper surface of the battery piece and converts the distance L into a distance signal to be transmitted to the controller, the controller receives the distance signal transmitted by the distance sensor and screens the minimum distance Li in the distance L, the value is the distance between the transmitting position and the highest point of the upper surface of the battery piece, namely (H-Li) is the distance between the highest point and the lowest point of the battery piece, namely the distance between the highest point and the lower bottom point of the largest foreign matter. The calculation module of the controller carries out calculation processing on the minimum distance Li obtained by measurement of the distance sensor, the minimum distance Li is brought into a judgment formula H-Li and is not less than k x 2D, when k is 1.0, (H-Li) reaches twice the thickness of the battery piece, fragments are indicated to exist, a control unit of the controller transmits an opening instruction, an electromagnetic switch is opened, and the controller sends a deceleration instruction to a driving mechanism, and the driving mechanism controls the running speed of a conveying track to be reduced, so that the purging device can better play a role.
Compared with the prior art, the invention has the following advantages: the device for cleaning the foreign matters on the surface of the battery piece is reasonable in structural design, the distance between the highest point and the lowest point of the foreign matters on the battery piece is measured through the distance sensor, whether the battery piece is stained with fragments or not is judged, and the battery piece is purged through the purging device, so that the screen printing plate explosion phenomenon caused by the fragments can be greatly reduced, the cost is saved, the device is simple, and the measurement is accurate.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the description of the embodiments will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic view of a device for cleaning foreign matters on the surface of a battery plate according to a preferred embodiment of the invention;
FIG. 2 is a schematic view of a purge apparatus in a preferred embodiment of the present invention;
wherein: the device comprises a conveying track-1, a stand column-2, a printing table-board-3, an inductor-4, a distance sensor-5, a controller-6, an air pipe-7, a fixing support-8, a fastening device-9, an air outlet-10, a joint-11 and an alarm-12.
Detailed Description
In order to make the technical solution of the present invention better understood by those skilled in the art, the technical solution of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present invention without making any inventive effort, shall fall within the scope of the present invention.
Referring to fig. 1-2, a device for cleaning foreign matters on a surface of a battery piece according to this embodiment includes a conveying track 1, a driving mechanism for driving the conveying track 1 to operate, a foreign matter detection device, a purge device, and an inductor 4 for sensing whether the conveying track 1 has a battery piece, wherein the foreign matter detection device includes a distance sensor 5, a controller 6 connected with the distance sensor 5, and the driving mechanism and the inductor 4 are connected with the controller 6.
Under the drive action of the drive mechanism, the conveying track 1 is used for sequentially conveying the battery pieces along the conveying direction, the distance sensor is arranged above the conveying track 1, the transmitter of the distance sensor transmits signals to the conveying track in a set direction so as to detect the distance between the transmitter and the battery pieces on the conveying track 1, and the controller receives the detection result of the distance sensor and controls the on-off between the air source and the air pipe and/or the opening and closing of the air outlet on the air pipe according to the detection result.
The transmitter of the distance sensor 5 transmits a signal to the transfer rail 1 in a set direction to detect the distance, and the controller 4 receives the distance and determines that the corresponding battery piece surface has foreign matter if the distance is less than a preset distance threshold. The purging device comprises an air pipe 7 arranged on the conveying track 1, an air outlet 10 arranged on the air pipe 7 and a high-pressure air source connected with the air pipe 7. The distance between the surface of the battery piece or the foreign matter on the battery piece and the distance sensor 5 is detected in real time through the distance sensor 5, so that whether the surface of the battery piece is stained with the foreign matter such as fragments and the like is judged, and the foreign matter is removed through the blowing device.
The battery piece surface foreign matter cleaning device of this embodiment sets up before the silk screen printing process, and transmission track 1 is the silk screen printing track promptly, is provided with stand 2 on the silk screen printing track, and printing mesa 3 sets up between a plurality of stands 2.
As shown in fig. 2, the air duct 7 in this embodiment is a tubular structure with a hollow interior and a closed side, the joint 11 on one side of the opening is connected with an air pipe, the air pipe is connected with a compressed air compressor, a flow regulating valve for controlling the purging strength is further provided between the air duct 7 and the air compressor, air outlets 10 are uniformly distributed on the air duct 7, and air blowing nozzles (not shown in the figure) are correspondingly provided on the air outlets 10. The high-pressure air source is compressed air prepared by an air compressor. The blowing nozzle is in a horn shape, and the opening size of one side of the blowing nozzle far away from the air pipe 7 is larger than the opening size of one side of the blowing nozzle near the air pipe 7. That is, the opening of the horn-shaped air blowing nozzle faces to the outer side, so that the gas can sweep the surface of the battery piece in a larger range, and the air blowing nozzle and the battery piece are at a certain angle, and the wind blown out by the air blowing nozzle can be at a certain angle with the battery piece, so that the foreign matters on the surface of the battery piece can be blown away more conveniently.
In this embodiment, two ends of the air pipe 7 are fixed on the conveying track 1 through a fixing bracket 8, the fixing bracket 8 is fixed on the conveying track 1 through a fastening device 9, and one end of the air pipe 7 is provided with a joint 11 connected with a high-pressure air source. The surface of the air pipe 7 is provided with a plurality of small round holes serving as an air outlet 10, and the purging angle can be adjusted by rotating the angle of the air pipe 7. The method comprises the following steps: the two ends of the air pipe 7 can be rotatably arranged on the fixed support 8, so that the air pipe 7 can relatively rotate, and the integral angle adjustment of the blowing nozzle on the same air pipe 7 can be realized, so that a better blowing effect can be realized. The realization of rotation can be driven by a gear and a rack to be more automatic and accurate.
The sensor 4 is used for sensing whether a battery piece exists on the conveying track 1, when the battery piece is sensed, the sensor 4 sends a signal to the controller 6, and the controller 6 receives the signal and controls the conveying track 1 to operate and controls the distance sensor 5 to operate. The sensor 4 is disposed below the transfer rail 1, and the distance sensor 5 is disposed above the transfer rail 1.
The line scanning length of the distance sensor 5 is greater than or equal to the length of the battery piece in the width direction of the conveying track; the purge width of the air duct 7 is greater than or equal to the length of the battery piece in the width direction of the conveying track. The limitation line scanning length is larger than or equal to the width of the battery piece, so that the comprehensiveness and the accuracy of detection can be guaranteed, and if only the detection of points is similar to the form of spot inspection, the accuracy of detection can not be guaranteed. The limit purge width is greater than or equal to the width of the battery piece to ensure the full purge of the battery piece, prevent incomplete purge, still have the foreign matter to be stained with on the battery piece.
The standard distance H between the controller 6 and the conveying track 1 is preset in the controller 6, the distance sensor 5 detects the surface of the battery piece or the distance L between the foreign matters on the battery piece and the distance sensor 5 in real time, the distance L is converted into a distance signal and is transmitted to the controller 6, the controller 6 receives the distance signal and screens the minimum distance Li in the distance L, the value of H-Li is calculated, when the H-Li is more than or equal to k.2D, the foreign matters are arranged on the battery piece, k is an error coefficient, and D is the thickness of the battery piece. The error coefficient k is 0.8-1.0.
Specifically, the controller 6 in the present embodiment includes a calculation module. The standard distance H between the distance controller 6 and the transfer track 1 is preset in the controller 6. The controller 6 receives the distance signal transmitted by the distance sensor 5 and screens the minimum distance Li in the distance L, the calculation module of the controller 6 calculates the minimum distance Li measured by the displacement sensor, the minimum distance Li is brought into a judgment formula H-Li not less than k x 2D, k is an error coefficient, the error coefficient k is 0.8-1.0, and D is the thickness of the battery piece. When H-Li is more than or equal to k and is 2D, the battery piece is provided with foreign matters.
If the thickness of the battery sheet is 170 μm, if k is 1.0, it is determined that the battery sheet is contaminated with foreign matter when H-Li is not less than 340 μm (twice the thickness of the battery sheet), but since there is a certain error in the thickness of the battery sheet and the distance sensor 5, the error coefficient k is preferably 0.8, that is, when H-Li is not less than 272 μm, it is determined that the battery sheet is contaminated with foreign matter. At this time, the controller 6 controls the electromagnetic switch to be turned on, and sweeps the battery piece to remove foreign matters, so as to prevent the battery piece from entering the priming plate of the screen printing device.
In this embodiment, the detection device further comprises an alarm 12 connected to the controller 6. When the controller 6 calculates that H-Li is greater than or equal to k 2D, the battery piece is provided with foreign matters, the controller 6 sends an alarm instruction to the alarm 12, the alarm 12 receives the alarm instruction and gives an alarm so as to play a role in warning, and the foreign matters can be confirmed to be removed completely through manual work. The controller 6 is also connected with a driving mechanism for driving the conveying track 1, and when the foreign matter detection device detects that the battery piece has foreign matters, the controller 6 sends a deceleration instruction to the driving mechanism, and the driving mechanism controls the running speed of the conveying track 1 to be reduced so that the purging device can better play a role.
The purging device in this embodiment further comprises an electromagnetic switch connected to the controller 6, the electromagnetic switch being arranged between the air duct 7 and the high pressure air source. When H-Li is greater than or equal to k 2D, the controller 6 sends an opening instruction to the electromagnetic switch, and the electromagnetic switch is opened. The electromagnetic switch is controlled to be turned on and off by the controller 6, so that the energy consumption can be reduced, and the production cost can be further reduced.
In this embodiment, the distance sensor 5 is a laser displacement sensor, including a laser emitter, a laser receiver, and a digital signal processor. When the laser displacement sensor receives the signal of the controller 6, the internal laser transmitter transmits laser, the scanning area of the laser is larger than the area of the measured battery piece or the line scanning length of the laser is larger than or equal to the length of the measured battery piece in the width direction of the conveying track, the laser returns to the laser receiver after reaching the upper surface of the battery piece, the actual distance L between the transmitting position and the upper surface of the battery piece or the foreign matter is calculated by the digital signal processor, and the distance L is converted into a distance signal to be conveyed to the controller 6. The controller 6 receives the distance signal transmitted from the distance sensor 5 and screens the minimum distance Li of the distance L, which is the distance between the emission point and the highest point of the foreign matter on the upper surface of the battery piece, that is, (H-Li) is the distance between the highest point and the lowest point of the foreign matter on the battery piece, that is, the distance between the highest top point and the lowest bottom point of the foreign matter. The calculation module of the controller 6 calculates the minimum distance Li obtained by measuring the distance sensor 5, the minimum distance Li is brought into a judgment formula H-Li not less than k x 2D, when k is 1.0, (H-Li) is twice the thickness of the battery piece, fragments are indicated to exist, a control unit of the controller 6 transmits an opening instruction, an electromagnetic switch is opened, and gas is blown out from a blowing nozzle to blow out foreign matters on the upper surface of the battery piece; the controller 6 sends an alarm instruction to the alarm 12, the alarm 12 receives the alarm instruction and gives an alarm to play a role of warning, and the foreign matters can be confirmed to be removed completely by manpower; the controller 6 sends a deceleration command to the driving mechanism, which controls the running speed of the conveyor rail 1 to be reduced, so that the purging device can better function.
The following briefly describes the use process of the device for improving the screen printing burst plate of the battery piece in this embodiment:
when the sensor is used for the first time, the sensor 4 needs to be triggered manually to sense, so that the distance sensor 5 detects the distance H between the emitter and the silk-screen track, and the H value needs to be recalibrated only when the position of the distance sensor 5 is changed. When the sensor 4 senses the battery piece in normal use, the sensor 4 sends a signal to the controller 6, the controller 6 receives the signal and controls the transmission track 1 to operate and controls the distance sensor 5 to operate, the digital signal processor of the distance sensor 5 calculates the actual distance L between the transmitting position and the upper surface of the battery piece and converts the distance L into a distance signal to be transmitted to the controller 6, the controller 6 receives the distance signal transmitted by the distance sensor 5 and screens the minimum distance Li in the distance L, and the value is the distance between the transmitting position and the highest point of the foreign matter on the upper surface of the battery piece, namely (H-Li) is the distance between the highest point and the lowest point of the foreign matter on the battery piece, namely the distance between the highest foreign matter upper peak and the lower point.
The calculation module of the controller 6 calculates the minimum distance Li measured by the distance sensor 5, and brings the minimum distance Li into the decision formula H-Li being equal to or greater than k x 2D. In this embodiment, k is preferably 0.8, that is, when (H-Li) is 1.6 times the thickness of the battery plate, it indicates that a foreign matter exists, and then the control unit of the controller 6 transmits an on command to the electromagnetic switch, an alarm command to the alarm and a speed reducing command to the driving mechanism, the track is conveyed to reduce speed, the alarm 12 alarms, the electromagnetic switch is turned on, and the blowing device blows the surface of the battery plate.
The device for cleaning the foreign matters on the surface of the battery piece is reasonable in structural design, the distance between the highest point and the lowest point of the foreign matters on the battery piece is measured through the distance sensor, whether the battery piece is stained with fragments or not is judged, and the battery piece is purged through the purging device, so that the screen printing plate explosion phenomenon caused by the fragments can be greatly reduced, the cost is saved, the device is simple, and the measurement is accurate.
The above embodiments are only for illustrating the technical concept and features of the present invention, and are intended to enable those skilled in the art to understand the present invention and to implement the same, but are not intended to limit the scope of the present invention, and all equivalent changes or modifications made according to the spirit of the present invention should be included in the scope of the present invention.
Claims (3)
1. A battery piece surface foreign matter cleaning device, its characterized in that: the device comprises a conveying track, a driving mechanism for driving the conveying track to run, a foreign matter detection device and a purging device, wherein the foreign matter detection device comprises a distance sensor and a controller connected with the distance sensor, the purging device comprises an air pipe arranged on the conveying track and an air source connected with the air pipe, and one or more air outlets are formed in the air pipe;
under the driving action of the driving mechanism, the conveying track is used for sequentially conveying the battery pieces along the conveying direction, the distance sensor is arranged above the conveying track, a transmitter of the distance sensor transmits signals to the conveying track in a set direction so as to detect the distance between the transmitter and the battery pieces on the conveying track, and the controller receives the detection result of the distance sensor and controls the on-off between the air source and the air pipe and/or the opening and closing of the air outlet on the air pipe according to the detection result;
the purging device further comprises an electromagnetic switch arranged between the air pipe and the air source, and the electromagnetic switch is connected with the controller;
the method comprises the steps that a standard distance H between a distance controller and a conveying track is preset in the controller, a distance sensor detects the surface of a battery piece or a distance L between a foreign object on the battery piece and the distance sensor in real time, the distance L is converted into a distance signal and is transmitted to the controller, the controller receives the distance signal and screens the minimum distance Li in the distance L, the value of H-Li is calculated, when the H-Li is greater than or equal to k by 2D, the foreign object is arranged on the battery piece, k is an error coefficient, and D is the thickness of the battery piece; the error coefficient k is 0.8-1.0;
the distance sensor is a line scanning type distance sensor, and the line scanning length of the distance sensor is larger than or equal to the length of the battery piece in the width direction of the conveying track;
the air outlet is correspondingly provided with an air blowing nozzle; the blowing nozzle is in a horn shape, and the opening size of one side of the blowing nozzle far away from the air pipe is larger than the opening size of one side of the blowing nozzle near the air pipe; the air pipe is of a tubular structure with a hollow interior and a closed side, one side of the opening is connected with an air pipe, the air pipe is connected with the compressed air machine, and a flow regulating valve for controlling purging strength is arranged between the air pipe and the air compressor; the two ends of the air pipe are rotatably arranged on the fixed bracket and used for enabling the air pipe to rotate relatively;
when H-Li is more than or equal to k x 2D, the controller sends an opening instruction to the electromagnetic switch, and the electromagnetic switch is opened; blowing out gas from the blowing nozzle to blow out foreign matters on the upper surface of the battery piece; meanwhile, the controller sends a speed reducing instruction to the driving mechanism, and the driving mechanism controls the running speed of the conveying track to be reduced.
2. The battery piece surface foreign matter cleaning device of claim 1, wherein: the air outlets are uniformly distributed on the air pipe.
3. The battery piece surface foreign matter cleaning device of claim 1, wherein: the distance sensor includes a transmitter, a receiver, and a digital signal processor.
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| CN201910565153.3A CN110246787B (en) | 2019-06-27 | 2019-06-27 | Battery piece surface foreign matter cleaning device |
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| CN111725357A (en) * | 2020-07-28 | 2020-09-29 | 成都晔凡科技有限公司 | Purging device |
| CN112547557A (en) * | 2020-11-21 | 2021-03-26 | 江苏赛愽智能制造研究院有限公司 | Visual detection system and detection method for casting core shell |
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| CN202400645U (en) * | 2012-01-11 | 2012-08-29 | 无锡尚德太阳能电力有限公司 | Silk screen printing feeding machine |
| JP2014093441A (en) * | 2012-11-05 | 2014-05-19 | Just | Wafer transfer device and wafer inspection apparatus comprising the same |
| CN205220024U (en) * | 2015-12-25 | 2016-05-11 | 安徽银阳光伏科技有限公司 | Solar cell screen printing feeding conveyor |
| CN108417516A (en) * | 2018-04-23 | 2018-08-17 | 上海华虹宏力半导体制造有限公司 | The detecting system and its detection method of wafer rear foreign matter |
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| CN202400645U (en) * | 2012-01-11 | 2012-08-29 | 无锡尚德太阳能电力有限公司 | Silk screen printing feeding machine |
| JP2014093441A (en) * | 2012-11-05 | 2014-05-19 | Just | Wafer transfer device and wafer inspection apparatus comprising the same |
| CN205220024U (en) * | 2015-12-25 | 2016-05-11 | 安徽银阳光伏科技有限公司 | Solar cell screen printing feeding conveyor |
| CN108417516A (en) * | 2018-04-23 | 2018-08-17 | 上海华虹宏力半导体制造有限公司 | The detecting system and its detection method of wafer rear foreign matter |
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