WO2010072017A1 - Pile solaire, son procédé d'identification et système de fabrication d'une marque d'identification corrélative - Google Patents

Pile solaire, son procédé d'identification et système de fabrication d'une marque d'identification corrélative Download PDF

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Publication number
WO2010072017A1
WO2010072017A1 PCT/CN2008/002087 CN2008002087W WO2010072017A1 WO 2010072017 A1 WO2010072017 A1 WO 2010072017A1 CN 2008002087 W CN2008002087 W CN 2008002087W WO 2010072017 A1 WO2010072017 A1 WO 2010072017A1
Authority
WO
WIPO (PCT)
Prior art keywords
identification
solar cell
identification mark
topography
manufacturing system
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.)
Ceased
Application number
PCT/CN2008/002087
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English (en)
Chinese (zh)
Inventor
李静粼
王遵义
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Chroma ATE Inc
Original Assignee
Chroma ATE Inc
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Chroma ATE Inc filed Critical Chroma ATE Inc
Priority to PCT/CN2008/002087 priority Critical patent/WO2010072017A1/fr
Publication of WO2010072017A1 publication Critical patent/WO2010072017A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10F—INORGANIC SEMICONDUCTOR DEVICES SENSITIVE TO INFRARED RADIATION, LIGHT, ELECTROMAGNETIC RADIATION OF SHORTER WAVELENGTH OR CORPUSCULAR RADIATION
    • H10F77/00—Constructional details of devices covered by this subclass
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10W—GENERIC PACKAGES, INTERCONNECTIONS, CONNECTORS OR OTHER CONSTRUCTIONAL DETAILS OF DEVICES COVERED BY CLASS H10
    • H10W46/00—Marks applied to devices, e.g. for alignment or identification
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10W—GENERIC PACKAGES, INTERCONNECTIONS, CONNECTORS OR OTHER CONSTRUCTIONAL DETAILS OF DEVICES COVERED BY CLASS H10
    • H10W46/00—Marks applied to devices, e.g. for alignment or identification
    • H10W46/401—Marks applied to devices, e.g. for alignment or identification for identification or tracking

Definitions

  • the present invention relates to a solar cell, a method for identifying a solar cell, and a system for identifying and marking a solar cell, and more particularly to an energy field for use in a solar cell.
  • BACKGROUND OF THE INVENTION Today, as the earth's energy is gradually depleted, solar cells have become the new favorite of a new generation of energy products. In general, the conversion efficiency of silicon solar cells is still the mainstream of solar cell technology.
  • FIG. 1 is a front view of the solar cell 10.
  • the solar cell 10 is structured as a substrate based on a bare substrate of a silicon substrate, and the silicon substrate is subjected to a diffusion process to form an N-type upper layer and a P-type lower layer to become a generally visible photosensitive layer.
  • the layer 14 is further provided with a structure such as a silver rubber wire 12 on its surface. Therefore, the distribution of the wires 12 and the photosensitive layer 14 is visible from the front surface.
  • the substrate is a substrate such as glass, plastic, or stainless steel which is inexpensive.
  • one side of the substrate is a transparent substrate such as glass, and the other side is a substrate used for a thin film solar cell.
  • the substrate edge 16 of the solar cell 10 is typically about 100 ⁇ m which is a portion that does not have a power generating effect.
  • the production source cannot be or is difficult to trace; the current solar cell 10 is still relatively unstable in quality, especially the polycrystalline silicon solar cell 10, which is more difficult to manufacture. Completely consistent. So when consumers or installers find that solar cells 10 are paralyzed, they often cannot track the problem of that manufacturer; or even if they know the problem with that manufacturer, It is also difficult for manufacturers to trace back to which equipment machine has a problem. If the problem continues, the loss of goodwill and consumer rights will be lost.
  • the equipment for producing solar cells 10 on the production line may have multiple labels. 10, manufacturers are difficult to accurately or quickly trace back to find out which process equipment is a problem, and therefore it is not easy to improve the problem immediately.
  • the technology is to etch a bar code-like identification mark on the front surface of the solar cell for later tracking and identification, although the function of tracking identification can be achieved, but the printing method is limited to the current
  • the implemented technology needs to be limited to the surface of the substrate, but it also hinders the photoelectric conversion performance and the appearance is also damaged.
  • the main object of the present invention is to provide a solar cell, a solar cell identification method, and a solar cell identification mark manufacturing system for tracking and recognizing in the energy field of solar cells, thereby improving The above question.
  • the object of the present invention is to provide a solar cell for tracking and identification in the energy field of a solar cell, and a method for identifying the solar cell and an identification mark manufacturing system of the solar cell, which can effectively identify and track the solar energy.
  • the source of the battery can even track the equipment that the production process goes through without affecting the visual appearance and product performance of the product.
  • the present invention relates to a solar cell, a method of identifying a solar cell, and an identification mark manufacturing system for a solar cell.
  • the solar cell is provided with an identification mark that can be read, and reading the shape of the identification mark can correspondingly generate an identification data.
  • the solar cell includes a substrate having a set of microscopic identification marks corresponding to the identification data on a side edge of the substrate, wherein the set of microscopic identification marks includes at least one identification mark.
  • the method for identifying a solar cell includes the following steps: when the solar cell needs to be tracked, the appearance of the set of microscopic identification marks is read; Finally, the topography of the identified mark should be visually recognized to generate the identification data. In this way, it is clear where the solar cell came from, and even the various equipment machines that have manufactured the solar cell.
  • the invention also includes an identification marking manufacturing system for a solar cell, the identification marking manufacturing system comprising at least a processing unit, a micro-inscription device, and a topography extraction device.
  • the processing unit is configured to read an identification data.
  • the micro-inscription device corresponding to the identification data read by the processing unit generates a set of micro-vision identification marks on the side edge of the substrate, wherein the set of micro-view identification marks is composed of at least one identification mark.
  • the topography extracting device reads the topography of the set of microscopic identification marks, wherein the processing unit corresponds to the topography extracted by the topographical extracting device to generate the identification data.
  • the microscopic identification mark composed of the nick of the edge of the substrate can be effectively recognized by identifying the shape of the microscopic identification mark.
  • the identification tracks the source of production of this solar cell and even tracks the equipment machine that the production process goes through without affecting product appearance and product performance.
  • FIG. 1 is a schematic front view of a solar cell
  • FIG. 2 is a partially enlarged schematic view showing an edge region of a substrate in a solar cell of the present invention
  • FIG. 3 is a schematic diagram showing the relationship between the identification mark manufacturing system of the present invention
  • FIG. 4 is a schematic diagram of correlation of further identifying data by gray scale image processing according to the present invention
  • FIG. 5 is a schematic diagram of the present invention applied to a solar energy manufacturing apparatus
  • FIG. 6 is a schematic view of a solar cell identification method of the present invention.
  • FIG. 7A is a schematic view showing another example of the topography of the identification mark of the present invention.
  • Fig. 7B is a schematic view showing still another example of the topography of the identification mark of the present invention.
  • Fig. 2 is an enlarged schematic view showing a portion of an edge region of a substrate 30 in a solar cell of the present invention.
  • the solar cell is provided with an identification mark 32 that can be read, and the shape of the identification mark 32 can be read by a device to correspondingly generate an identification data 4802.
  • the solar cell comprises a substrate 30.
  • the substrate 30 is a silicon substrate 30.
  • a set of micro-view identification marks 34 corresponding to the identification data 4802 will be formed, wherein the set of micro-view identification marks 34 includes at least one identification mark 32, and three identification marks 32 are seen in the figure.
  • a set of microscopic identification marks 34 represents a set of identification data of identifiable identity. Therefore, the more complex the identified data 4802 is, the more identification marks 32 are needed in a set of micro-vision identification indicators 34.
  • FIG. 3 is a schematic diagram of the association of the identification mark manufacturing system 40 of the present invention.
  • the present invention is also an identification display manufacturing system 40 for a solar cell.
  • the identification mark manufacturing system 40 includes at least a processing unit 42, a micro-inscription device 44, and a topography extraction device.
  • the plurality of identification data 4802 are pre-stored in a storage unit 48.
  • Each identification data 4802 has uniqueness and representativeness, and the purpose is to be able to be distinguished.
  • the identification data 4802 can be separated. Different production batch numbers, different manufacturers, different times or as a separate user-specific label.
  • the processing unit 42 reads the identification data 4802 in the storage unit 48.
  • the micro-engraving device 44 corresponds to the identification data 4802 read by the processing unit 42 at the edge 16 of the substrate 30.
  • the processing forms a set of micro-view identification marks 34 at the side edges 16 of the substrate 30.
  • the set of micro-view identification marks 34 is preferably composed of a plurality of identification marks 32 of a sequence, and the more complicated the identification data 4802 is required. The more identification marks 32 are used.
  • the identification mark 32 is actually a nick, and the generated identification mark 32 is formed by a micro-inscription device 44.
  • the micro-engraving device 44 can be, for example, a wire saw machine (Band Saws), a band sawing technique (Band Saws), an ultrasonic micro-engraving device, an apparatus using etching, or a device using laser micro-engraving, by which, A nick of the topography recess can be engraved on the side edge 16 of the substrate 30 as the identification mark 32.
  • the topography extracting device 46 is used to read these visually difficult identification marks 32.
  • the topography extracting device 46 of the present embodiment can be used, such as Automated Optical Inspection (AOI) or a simple linear image sensor. (CCD Image Sensor).
  • AOI Automated Optical Inspection
  • CCD Image Sensor CCD Image Sensor
  • the topography extraction device 46 reads the topography of the set of microscopic identification marks 34; the subsequent processing unit 42 corresponds to the topography extracted by the topographical extraction device 46 to restore the identification data 4802, thereby confirming the identity of the solar cell. .
  • FIG. 4 is a schematic diagram of the association of the grayscale image processing identification data 4802 according to the present invention. Further, as described above, the identification mark manufacturing system 40, wherein the topography extracting means 46 reads the topography of the identification mark 32 to generate a corresponding gray scale image.
  • the processing unit 42 further includes a decoding module 4202.
  • the decoding module 4202 compares the grayscale image with a grayscale domain value 4804, and the grayscale domain value 4804 can also be pre-stored in the storage unit 48.
  • the decoding module 4202 compares the results.
  • the decoding produces a digital signal, which is the identification data 4802. For example, when the grayscale value of the grayscale image is lower than the grayscale domain value of 4804, it is judged as signal 0, which means that an identification mark 32 is encountered, and the grayscale value of the grayscale image is higher than the grayscale domain value of 4804, and is judged as signal 1, which represents There is no identification mark 32 at the predetermined position, and the digital signals constituting these 0 and 1 represent the identification data 4802.
  • FIG. 5 is a schematic diagram of the present invention applied to a solar energy manufacturing apparatus 50.
  • the solar cell 60 is formed by a solar manufacturing device 50, which includes a number of process stations, such as die cutting equipment, cleaning equipment, diffusion equipment, coating equipment, optical inspection equipment, electrical inspection equipment, classification.
  • the device is detected, etc., as if it are the process station equipment such as the process stations 50a, 50b, 50c, 50d, 50e illustrated in the figure.
  • Place The substrate 30, such as a die enters at the front end of the solar manufacturing apparatus 50, and is already finished by the solar cell 60 when it is sent out by the rear end, and is subjected to process stations 50a, 50b, 50c, 50d, 50e in the middle.
  • process stations 50a, 50b, 50c, 50d, 50e are likely to be provided by different manufacturers and are located at different locations. We can choose to provide the storage devices 70a, 70b, 70c, 70d, 70e in the respective process stations 50a, 50b, 50c, 50d 50e, and the identification data 4802 can be stored in the solar manufacturing equipment 50 during the manufacturing process. Each of the process stations 50a, 50b, 50c, 50d, 50e. Subsequently, when there is a problem with the solar cell 60, the data in the storage device can be compared to find out which production line or which process station device has a problem. It can also be reversed.
  • the data of the process station equipment is integrated into an identification data 4802, and then processed at the edge 16 of the solar cell 60.
  • a set of microscopic identification marks however, processing at this time will put the finished solar cell 60 in the risk of micro-cracking and oxidation.
  • the operation of the micro-engraving device 44 for identifying the marking manufacturing system 40 is preferably provided when the die is formed, that is, after the die cutting device slices the wafer and confirms the contour edge, the edge of the substrate 30 is cut out.
  • a set of micro-view identifications 34 can facilitate subsequent storage in each of the process stations 50a, 50b, 50c, 50d, 50e.
  • FIG. 6 is a schematic diagram of a method for identifying a solar cell 60 of the present invention.
  • the present invention is also a method for identifying a solar cell 60, which is still structurally directed to the substrate 30 of the solar cell 60.
  • the identification method comprises the following steps:
  • Step S02 First, an identification data 4802 is read.
  • Step S04 Next, the identification data 4802 is corresponding to form a set of microscopic identification marks 34 on the side edge 16 of the substrate 30.
  • the set of microscopic identification marks 34 includes at least one identification mark 32.
  • Step S06 When the solar cell 60 needs to be tracked, the appearance of the set of micro-vision identification marks 34 is read.
  • Step S08 Finally, the topography of the micro-view identification mark 34 is corresponding to generate the identification data 4802. In this way, it is possible to understand where the solar cell 60 comes from, and even to understand the various equipment machines in which the solar cell 60 has been manufactured. Further, the identification mark 32 is further described: the shape of the identification mark 32 may refer to the distance between the nick and the nick, as shown in FIG. 2, but in practice, it is not limited to the interpretation by the nick and the nick. .
  • FIG. 7A is another schematic diagram of the topography of the identification mark 32 of the present invention.
  • the topography of the identification mark 32 refers to the nick geometry, and different geometric shapes can also constitute a unique microscopic identification mark 34.
  • Figure 7B is a schematic illustration of still another example of the topography of the identification indicia 32 of the present invention.
  • the shape of the identification mark 32 refers to the size of the nick.
  • the unique nick size, width, or depth can also constitute a unique microscopic identification mark 34.
  • the examples of FIG. 3, FIG. 7A, and FIG. 7B may be mixed, and the advantage is that complex identification data 4802 can be formed.
  • the disadvantage is that the difficulty, complexity, or the burden of the processing unit 42 may be heavier.
  • the microscopic identification mark 34 composed of the nick of the edge of the substrate 30 is used to identify the microscopic identification mark.
  • the shape of the 34 can effectively identify and track the production source of the solar cell 60, and even track the equipment machine that the production process goes through without affecting the appearance and product performance of the product.

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  • Photovoltaic Devices (AREA)

Abstract

L'invention concerne une pile solaire (60), un procédé d'identification de la pile solaire (60) et un système de fabrication (40) d'une marque d'identification de la pile solaire (60). Des encoches (32) qui sont formées sur le côté (16) du substrat (30) de la pile solaire (60) peuvent servir de marque d'identification. Une série d'encoches (32) côte à côte constitue un groupe de marques d'identification par microvision (34). Les données d'identification peuvent être obtenues en identifiant l'apparence des marques d'identification par microvision (34) par un dispositif de détection de l'apparence (46).
PCT/CN2008/002087 2008-12-26 2008-12-26 Pile solaire, son procédé d'identification et système de fabrication d'une marque d'identification corrélative Ceased WO2010072017A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/CN2008/002087 WO2010072017A1 (fr) 2008-12-26 2008-12-26 Pile solaire, son procédé d'identification et système de fabrication d'une marque d'identification corrélative

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CN2008/002087 WO2010072017A1 (fr) 2008-12-26 2008-12-26 Pile solaire, son procédé d'identification et système de fabrication d'une marque d'identification corrélative

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WO2010072017A1 true WO2010072017A1 (fr) 2010-07-01

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PCT/CN2008/002087 Ceased WO2010072017A1 (fr) 2008-12-26 2008-12-26 Pile solaire, son procédé d'identification et système de fabrication d'une marque d'identification corrélative

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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0677509A (ja) * 1992-08-25 1994-03-18 Sanyo Electric Co Ltd 太陽電池に於けるセル識別方式
JPH11261095A (ja) * 1998-03-11 1999-09-24 Canon Inc 太陽電池モジュール、その製造方法、その設置方法及び太陽光発電システム
CN1241038A (zh) * 1998-06-12 2000-01-12 佳能株式会社 太阳能电池组件、电池组件列、电池系统及其监控方法
WO2007099138A1 (fr) * 2006-02-28 2007-09-07 Q-Cells Ag Procédé de marquage de cellules solaires et cellules solaires
JP2008294365A (ja) * 2007-05-28 2008-12-04 Sanyo Electric Co Ltd 太陽電池の製造方法
JP2008294364A (ja) * 2007-05-28 2008-12-04 Sanyo Electric Co Ltd 太陽電池モジュール及びその製造方法

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0677509A (ja) * 1992-08-25 1994-03-18 Sanyo Electric Co Ltd 太陽電池に於けるセル識別方式
JPH11261095A (ja) * 1998-03-11 1999-09-24 Canon Inc 太陽電池モジュール、その製造方法、その設置方法及び太陽光発電システム
CN1241038A (zh) * 1998-06-12 2000-01-12 佳能株式会社 太阳能电池组件、电池组件列、电池系统及其监控方法
WO2007099138A1 (fr) * 2006-02-28 2007-09-07 Q-Cells Ag Procédé de marquage de cellules solaires et cellules solaires
JP2008294365A (ja) * 2007-05-28 2008-12-04 Sanyo Electric Co Ltd 太陽電池の製造方法
JP2008294364A (ja) * 2007-05-28 2008-12-04 Sanyo Electric Co Ltd 太陽電池モジュール及びその製造方法

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