JPWO2013077111A1 - Solar cell wiring device and wiring method - Google Patents

Abstract

Provided are a solar cell wiring device and a wiring method for automatically cutting unnecessary portions of a wiring material in which first regions and second regions having different light reflection characteristics are provided alternately. The wiring member (20a, 20b, 20c) mounted on the mounting table (30) is imaged by the imaging unit (50) while being illuminated by the illumination unit (41, 42), and is wired by the distance detection unit. For each material, the coordinate value of the reference line B of the boundary line between the first area and the second area when the reference line A provided on the mounting table (30) is the origin of the coordinate axis is transmitted to the control unit. Then, the control unit obtains the distance to the cutting position of each wiring material based on this value, and controls the driving unit, so that the chuck unit (80) moves the wiring material to the distance to each cutting position.

Description

  The present invention relates to a solar cell wiring device and wiring method.

  A solar power generation device is configured by connecting a plurality of solar cell modules as an installation unit. In general solar cell modules, EVA (ethylene vinyl acetate copolymer) is used to electrically connect a plurality of solar cell strings in which a plurality of solar cells are electrically connected in series, and to protect them from the external environment. ) And the like, and packaged with glass, a sheet for protecting the back surface, or the like.

  The solar cell string is obtained by soldering a wiring material so that an electrode formed on the surface as a light receiving surface of the solar cell and an electrode formed on the back surface of an adjacent solar cell are electrically connected in series. It is formed.

  In such a wiring material soldering process, a wiring device is used, and the wiring material wound around a bobbin or the like is placed on the solar cell through the process of drawing, correcting, cutting, molding, and soldering. Is done.

  An outline of a conventional wiring device and wiring method will be described with reference to FIG.

  As shown in FIG. 15A, the wiring device includes a wiring material supply unit 200, a lock unit 220, a cutter unit 230, and a chuck unit 240 as main elements.

  The wiring material 210 wound around the bobbin 201 included in the wiring material supply unit 200 is supplied via the step roller 202 and the guide roller 203, and as shown in FIG. It is chucked by 240 and pulled out by the required length in the right direction in the figure indicated by the arrow, and is locked by the lock unit 220.

  As illustrated in FIG. 15C, the wiring member 210 is cut by the cutter unit 230 disposed in the vicinity of the lock unit 220. The cut wiring member 210 is supplied to a solar cell (not shown) and soldered.

  In addition, although detailed explanation is omitted, at any stage before supply, a correction mechanism and process for eliminating bobbin curling on the wiring material, and a molding mechanism and process for attaching a mold to the wiring material are provided. There is also.

Special table 2009-518823

  Here, a case where wiring is performed using a predetermined wiring material different from a normal wiring material will be considered. First, a normal wiring material is obtained by plating a flat pure copper wire with solder or lead-free solder on the entire surface.

  On the other hand, the predetermined wiring material different from the normal wiring material, which is a target after that, is a flat pure copper wire material plated with solder or lead-free solder as in the normal wiring material. As shown in the longitudinal sectional view of (a), the unevenness that reflects light on the surface according to the length (L) necessary to connect the back surface side and the surface side of the two solar cells. The portions and the solder portions having no unevenness and having only the solder layer are alternately formed in a constant pattern. The length of the pattern is set on the assumption of the structure of the string to be manufactured as shown in FIG. 16B, which will be described later. The uneven portion and the solder portion without the uneven portion have light reflection characteristics. Is different. This predetermined wiring material is such that sunlight is irregularly reflected on the uneven portion formed on the surface, whereby the photoelectric conversion efficiency of the solar cell module is improved. For example, as shown in FIG. Wiring material.

  By the way, when wiring is performed using such a predetermined wiring material, it is necessary to discard an unnecessary portion of the wiring material unlike a normal wiring material. Next, disposal of unnecessary portions of the wiring material will be described.

  The length of the wiring material varies depending on the position on the string. As shown in FIG. 16B, the wiring material arranged on the string includes the wiring material 301 at the beginning of the string, the wiring material 307 at the end of the string, and other parts (intermediate part of the string). The lengths of the leading wiring member 301, the trailing wiring member 307, and the intermediate wiring members 302 to 306 are set to arbitrary values, and the lengths of the intermediate wiring members 302 to 306 are set. All are equal.

  The predetermined wiring material is manufactured in advance so that the length L shown in FIG. 16A matches the length of the intermediate wiring material.

  Since a general wiring material is formed in a uniform structure as a whole, it is not subject to structural restrictions even if it is cut at any position, and it is only necessary to set a necessary length and cut it. However, when a predetermined wiring material is used, wiring must be performed so that the concavo-convex portion faces the same direction as the light receiving surface of the cell.

For example, when creating a string continuously using normal wiring material,
It is only necessary to repeat the setting of the required length of each part, starting part wiring material cut ⇒ intermediate part wiring material cut multiple times ⇒ tail part wiring material cut, but when using a predetermined wiring material,
It is necessary to discard the unnecessary part after the first part wiring material cut ⇒ intermediate part wiring material cut multiple times ⇒ last part wiring material cut.

  Here, as shown in FIG. 16C, the unnecessary portion refers to an end portion when cutting the wiring material 307 at the end of one string and then cutting the wiring material 301a at the beginning of the subsequent string. This corresponds to an unnecessary portion R that occurs when the lengths of the wiring member 307 and the leading wiring member 301a are different from L.

  In addition, there is an error in pattern formation accuracy depending on the presence or absence of unevenness in a predetermined wiring material. For this reason, even if the wiring material is accurately cut by a predetermined length, the cutting position may deviate from the assumed position while the cutting is repeated a plurality of times. Alternatively, when a plurality of wiring materials are used, even if they are aligned with each other at the time of the first cut, there is a possibility that the cutting position will be different for each wiring material while the cutting is repeated a plurality of times.

  Such a shift affects the wiring accuracy and consequently reduces the performance of the solar cell module, so it needs to be corrected. Therefore, it is effective to perform alignment when discarding unnecessary portions of the wiring material generated each time a string is created. In addition, it is necessary to perform alignment even when the wiring material is manually set when replacing the bobbin. That is, it is effective to always perform a discarding step of unnecessary portions before cutting the head portion.

  In the conventional wiring device, it was possible to cut the wiring material to a set length. This processing is usually performed by chucking the end of the wiring material wound around the bobbin or the like with a chuck portion or the like, and moving the chuck portion by the required length of the wiring material by control of a servo or the like, and cutting. That's it.

  However, in the conventional wiring device, an unnecessary portion cannot be automatically cut based on the shape of the wiring material.

  An object of this invention is to provide the wiring apparatus and wiring method of a photovoltaic cell which can cut an unnecessary part automatically based on the shape of a wiring material in view of the said situation.

  According to the solar cell wiring device and wiring method of the present invention, it is possible to automatically cut unnecessary portions based on the shape of the wiring material, and to securely connect the solar cells.

The solar cell wiring device of the present invention,
A wiring material supply unit that supplies a plurality of predetermined wiring materials in which first regions and second regions having different light reflection characteristics are alternately provided on at least one surface;
A mounting table on which the wiring material supplied by the wiring material supply unit is mounted, and a first reference line for positioning the wiring material is provided;
An illumination unit for irradiating light to the wiring member placed on the mounting table;
An imaging unit for capturing an image of the wiring member illuminated by the illumination unit;
The coordinates of the second reference line of the boundary line between the first area and the second area when the first reference line is used as the origin of the coordinate axis based on the image captured by the imaging unit A distance detector for detecting a value for each wiring member;
In order to move the wiring material placed on the mounting table in a direction orthogonal to the first reference line, a wiring material moving portion provided for each wiring material,
A drive unit for driving the wiring material moving unit;
A control unit for controlling the operation of the driving unit;
A transmission unit that transmits the coordinate value detected by the distance detection unit to the control unit;
With
In a state where a plurality of the wiring materials are placed on the mounting table,
The wiring member illuminated by the illumination unit is imaged by the imaging unit,
The distance detection unit detects the coordinate value of the second reference line when the first reference line is the origin of the coordinate axis for each wiring member,
The detected coordinate value is transmitted to the control unit by the transmission unit,
The control unit obtains a distance to the cut position of each wiring material based on the detected coordinate value, and controls the driving unit so that the wiring material moving unit controls each wiring material. The distance to the cutting position is moved.

The wiring method of the solar battery cell of the present invention,
A wiring material supply unit that supplies a plurality of predetermined wiring materials in which first regions and second regions having different light reflection characteristics are alternately provided on at least one surface;
A mounting table on which the wiring material supplied by the wiring material supply unit is mounted, and a first reference line for positioning the wiring material is provided;
An illumination unit for irradiating light to the wiring member placed on the mounting table;
An imaging unit for capturing an image of the wiring member illuminated by the illumination unit;
The coordinates of the second reference line of the boundary line between the first area and the second area when the first reference line is used as the origin of the coordinate axis based on the image captured by the imaging unit A distance detector for detecting a value for each wiring member;
In order to move the wiring material placed on the mounting table in a direction orthogonal to the first reference line, a wiring material moving portion provided for each wiring material,
A drive unit for driving the wiring material moving unit;
A control unit for controlling the operation of the driving unit;
A transmission unit that transmits the coordinate value detected by the distance detection unit to the control unit;
A wiring method using a solar cell wiring device comprising:
A step of supplying each of the plurality of wiring materials by the wiring material supply unit and placing them on the mounting table;
A step of taking an image of the wiring member illuminated by the illumination unit by the imaging unit;
A step of detecting a coordinate value of the second reference line when the distance detection unit uses the first reference line as an origin of a coordinate axis for each wiring member;
Transmitting the detected coordinate value to the control unit by the transmitting unit;
A step of obtaining a distance to the cut position of each wiring member based on the detected coordinate value by the control unit;
A step of controlling the drive unit by the control unit so that the wiring material moving unit moves the distance of the wiring material to each of the cutting positions;
It is characterized by providing.

The front view and top view which show the structure of the wiring apparatus of the photovoltaic cell by Embodiment 1, 2 of this invention. The top view which shows the wiring method of the photovoltaic cell by the same Embodiment 1 according to a process. The top view which shows the movement of the wiring material in the wiring method of the photovoltaic cell by the same Embodiment 1 according to a process. The top view which shows the wiring method of the photovoltaic cell by Embodiment 2 of this invention according to a process. The top view which shows the movement of the wiring material in the wiring method of the photovoltaic cell by the said Embodiment 2, 3 according to a process. The front view and top view which show the structure of the wiring apparatus of the photovoltaic cell by Embodiment 3 of this invention. The top view which shows the wiring method of the photovoltaic cell by the same Embodiment 3 according to a process. The top view which shows the example of a setting of required amount in the wiring method of the photovoltaic cell by the Embodiment 1-3. Explanatory drawing which shows the example of arrangement | positioning of the mounting base in the wiring apparatus of the photovoltaic cell by the Embodiments 1-3, the illumination part, and the imaging part. The top view and front view which show the roller which removes the curl of the wiring material which can be provided in the wiring apparatus of the photovoltaic cell by the Embodiment 1-3. The front view and top view which show schematic structure of the wiring apparatus of the solar cell by Embodiment 4, 5, 6 of this invention. The front view which expands and shows a part of structure of the wiring apparatus of the solar cell by the same Embodiment 4. FIG. The front view and side view which expand and show a part of structure of the wiring apparatus of the solar cell by the same Embodiment 5. FIG. The front view and top view which expand and show a part of structure of the wiring apparatus of the solar cell by the same Embodiment 6. FIG. Explanatory drawing which shows the process of the conventional wiring apparatus and wiring method of a photovoltaic cell. Wiring is performed using a longitudinal cross-sectional view showing the structure of a predetermined wiring material used in the present invention, a vertical cross-sectional view showing a wiring material soldered to a plurality of solar cells constituting the string, and a predetermined wiring material. Explanatory drawing which shows the unnecessary part produced in a case.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the following embodiments, a case where the bus bar is assumed to be three solar cells and three wiring members are used will be described.

(1) Embodiment 1
The configuration of the solar cell wiring device according to Embodiment 1 of the present invention is shown as a front view in FIG. 1 (a) and as a plan view in FIG. 1 (b).

  This wiring device supplies a wiring material 20, and includes a bobbin 11 around which the wiring material 20 is wound, a step roller 12 for moving up and down by its own weight to eliminate loosening of the wiring material, and a guide roller 13. Gripping part 10, lock part 60 for locking wiring material 20, cutter part 70 for cutting wiring material 20, and tip of wiring material 20, and moving wiring material 20 by moving in the left-right direction in the figure A chuck unit 80 as a wiring material moving unit that can be pulled out, a mounting table 30 disposed between the wiring material supply unit 10 and the lock unit 60, and an illumination that irradiates the wiring material 20 with light on the mounting table 30. Units 41 and 42, an imaging unit 50 for taking an image of the irradiated wiring member 20, a disposal tray 90 in which unnecessary portions of the cut wiring member 20 are discarded, and the wiring member 20 cut to a required length The thick Comprising a supply part 100 for supplying to the battery cells.

  Further, the mounting table 30 is provided with a first reference line A for alignment in a direction orthogonal to the longitudinal direction of the wiring members 20a, 20b, 20c.

  In order to detect the distance between the first reference line A and the second reference line B on the end faces of the concavo-convex portions of the wiring members 20a, 20b, and 20c described later, a distance detection unit (not shown) is provided. It has been.

  As shown in FIG. 1B, the wiring material supply unit 10 (bobbins 11a, 11b, 11c) and the lock units 60a, 60b, 60c correspond to each of the three wiring materials 20a, 20b, 20c. Cutter portions 70a, 70b, 70c and chuck portions 80a, 80b, 80c are provided.

  The movement of the chuck units 80a, 80b, and 80c is performed by a drive unit (servo) (not shown). Further, the gripping / releasing operation of the chuck portions 80a, 80b, and 80c is performed by an air driving unit (not shown) that opens and closes the air by introducing air into the chuck portions 80a, 80b, and 80c, for example.

  In addition, although the drive part (servo) of chuck | zipper part 80a, 80b, 80c should just be provided in common, you may be provided independently 1 each, respectively.

  In order to move the lock parts 60a, 60b, 60c up and down, a drive part composed of, for example, an air cylinder mechanism is provided.

  In order to move the cutter units 70a, 70b, and 70c up and down, a drive unit including, for example, an air cylinder mechanism is provided.

  In order to control the operation of these driving units, a control unit (not shown) is provided.

  Furthermore, in order to transmit the distance detected by the distance detection unit to the control unit, a transmission unit (not shown) is provided.

  In the first embodiment, the process of discarding unnecessary portions of the wiring material is automatically performed. The process of cutting and discarding such unnecessary parts of the wiring material will be described with reference to FIG. 1, FIG. 2, and FIG.

  i) First, the end portions of the wiring members 20a, 20b, and 20c wound around the bobbins 11a, 11b, and 11c are gripped by the chuck portions 80a, 80b, and 80c based on the control of the control unit as described above (FIG. 1). At this time, each chuck portion grips each wiring member at the cutting position S shown in FIG.

  ii) In a state where the wiring members 20a, 20b, and 20c are placed on the placing table 30 provided with the first reference line A, light is irradiated by the illumination units 41 and 42, and an image is taken by the imaging unit 50. Done (FIG. 1). In the image, the concavo-convex portion is represented as a reflective portion. The distance between the second reference line B and the first reference line A corresponding to the start position of the uneven portion is detected by the distance detection unit and transmitted to the control unit by the transmission unit.

  At this time, as shown in FIG. 3A, the coordinate values of the second reference line B when the first reference line A for alignment is the origin of the coordinate axes are respectively values ( b: −5 mm), a value (c: −10 mm) in the wiring material 20 b, and a value (a: 3 mm) in the wiring material 20 c.

  The detected value is transmitted to the control unit, and based on this value, the drive unit (servo) of the chuck unit is controlled so as to perform the operations iii), v), and vii) below.

  iii) As shown in FIGS. 3B and 2A, the largest value, that is, the value of the wiring material in which the second reference line B is located on the right side in the drawing is selected. In this case, the value (a: 3 mm) of the wiring member 20c is selected from among the value (b: −5 mm), the value (c: −10 mm), and the value (a: 3 mm).

  The chuck portions 80a, 80b, 80c move rightward in the figure by a value (α)-(a) obtained by subtracting this value (a) from the required amount (α), and the three wiring members 20a, 20b, 20c is moved.

  iv) As shown in FIG. 2A, the wiring member 20c is locked by the lock portion 60c indicated by hatching, and the chuck portion 80c also indicated by hatching is opened.

  v) As shown in FIG. 3C and FIG. 2B, the second largest value, that is, the value of the wiring material in which the second reference line B is located on the second right side in the figure is selected. . In this case, the value (b: -5 mm) of the wiring member 20a is selected from the value (b: -5 mm) and the value (c: -10 mm). The chuck portions 80a, 80b, 80c are moved rightward in the figure by the value (a)-(b) obtained by subtracting this value (b) from the value (a), and the wiring members 20a, 20b are moved.

  vi) As shown in FIG. 2B, the wiring member 20a is locked by the lock portion 60a, and the chuck portion 80a is opened.

  vii) As shown in FIGS. 3D and 2C, the third largest value, that is, the value of the wiring material on which the second reference line B is third on the right side is selected. . In this case, the value (c: -10 mm) of the wiring material 20b is selected. The chuck portions 80a, 80b, 80c are moved rightward in the figure by the value (b)-(c) obtained by subtracting this value (c) from the value (b), and the wiring member 20b is moved.

  viii) As shown in FIG. 2C, the wiring member 20b is locked by the lock portion 60b, and the chuck portion 80b is opened.

  ix) As shown in FIG. 2C, the wiring members 20a, 20b, and 20c are moved to the positions (A), (C), and (A) shown in FIG. The unnecessary portion is discarded in the disposal tray 90.

  According to the first embodiment, unnecessary portions can be automatically cut based on the shape of the wiring material.

(2) Embodiment 2
A wiring device and wiring method for solar cells according to Embodiment 2 of the present invention will be described.

  The configuration of the wiring device according to the second embodiment is the same as that according to the first embodiment.

  However, in the first embodiment, it is only necessary to provide one common drive unit (servo) for the chuck units 80a, 80b, and 80c. However, in the second embodiment, 1 is independently provided for each chuck unit. A drive unit (servo) is provided one by one.

  In the second embodiment, a process of cutting and discarding an unnecessary portion of the wiring material will be described with reference to FIGS.

  i) First, the ends of the wiring members 20a, 20b, and 20c wound around the bobbins 11a, 11b, and 11c are gripped by the chuck portions 80a, 80b, and 80c (FIG. 1). At this time, each chuck portion grips each wiring member at the cutting position S shown in FIG.

  ii) In a state where the wiring members 20a, 20b, and 20c are placed on the placing table 30 provided with the first reference line A, light is irradiated by the illumination units 41 and 42, and an image is taken by the imaging unit 50. Performed (FIG. 1). In the image, the concavo-convex portion is represented as a reflective portion. The distance between the second reference line B and the first reference line A corresponding to the start position of the uneven portion is detected by the distance detection unit and transmitted to the control unit by the transmission unit.

  At this time, as shown in FIG. 5A, the coordinate values of the second reference line B when the first reference line A for alignment is the origin of the coordinate axes are respectively values ( b: −5 mm), a value (c: −10 mm) in the wiring material 20 b, and a value (a: 3 mm) in the wiring material 20 c.

  The detected value is transmitted to the control unit, and based on this value, the drive unit (servo) of each chuck unit is controlled so as to perform the operation of iii) below.

  iii) As shown in FIGS. 5B and 4, the chuck portion 80a has a value (α) − (b) obtained by subtracting the value (b) from the required amount (α), and the chuck portion 80b has a value (c ) Is subtracted from the necessary amount (α) (α) − (c), and the chuck portion 80c is the value (α) − (a) obtained by subtracting the value (a) from the necessary amount (α) in the right side of the figure. The three wiring members 20a, 20b, and 20c are moved in the direction.

  iv) As shown in FIG. 4, all the wiring members 20a, 20b, and 20c are simultaneously locked by the lock portions 60a, 60b, and 60c, and the positions shown in FIG. 5B by the cutter portions 70a, 70b, and 70c ( It is cut at (i), (c) and (a). The cut unnecessary part is discarded in the disposal tray 90.

  According to the second embodiment, similarly to the first embodiment, unnecessary portions can be automatically cut based on the shape of the wiring material.

(3) Embodiment 3
A wiring device and wiring method for solar cells according to Embodiment 3 of the present invention will be described.

  First, the wiring device according to the third embodiment has a configuration as shown in FIG. This wiring device corresponds to a wiring material moving portion provided with roller portions 110a, 110b, and 110c instead of the chuck portion in the first and second embodiments shown in FIG.

  Each of the roller portions 110a, 110b, and 110c is composed of a pair of upper and lower rollers, and the upper roller moves up and down by a drive unit including an air cylinder mechanism or the like, thereby pressing and releasing the wiring members 20a, 20b, and 20c. . With the upper roller holding the wiring material, the lower rollers are individually rotated by a drive unit (servo) (not shown), so that the wiring materials 20a, 20b, and 20c are sent out in the rotation direction. In addition, the drive part of roller part 110a, 110b, 110c is provided one each independently with respect to each roller part.

  In order to move the lock portions 120a, 120b, and 120c up and down, a drive unit composed of, for example, an air cylinder mechanism is provided.

  In order to move the cutter units 130a, 130b, and 130c up and down, a drive unit including, for example, an air cylinder mechanism is provided.

  In order to control the operation of these driving units, a control unit (not shown) is provided.

  Furthermore, in order to transmit the distance detected by the distance detection unit to the control unit, a transmission unit (not shown) is provided.

  The servo control, that is, the movement of the wiring material is exactly the same as in the second embodiment shown in FIG.

  Hereinafter, the cutting and discarding process of unnecessary portions of the wiring material will be described with reference to FIGS. 5, 6, and 7.

  i) First, the wiring members 20a, 20b, and 20c wound around the bobbins 11a, 11b, and 11c are pressed by the roller portions 110a, 110b, and 110c provided at arbitrary positions where the wiring members can be fed (FIG. 6). ).

  ii) In a state where the wiring members 20a, 20b, and 20c are placed on the placing table 30 provided with the first reference line A, light is irradiated by the illumination units 41 and 42, and an image is taken by the imaging unit 50. Performed (FIG. 6). In the image, the concavo-convex portion is represented as a reflective portion. The distance between the second reference line B and the first reference line A corresponding to the start position of the uneven portion is detected by the distance detection unit and transmitted to the control unit by the transmission unit.

  At this time, as shown in FIG. 5A, the coordinate values of the second reference line B when the first reference line A for alignment is the origin of the coordinate axes are respectively values ( b: −5 mm), a value (c: −10 mm) in the wiring material 20 b, and a value (a: 3 mm) in the wiring material 20 c.

  The detected value is transmitted to the control unit, and based on this value, the drive unit (servo) of each roller unit is controlled so as to perform the operation of iii) below.

  iii) As shown in FIGS. 5B and 7, the roller unit 110a has a value (α) − (b) obtained by subtracting the value (b) from the required amount (α), and the roller unit 110b has a value (c ) Is subtracted from the required amount (α) (α) − (c), and the roller portion 110c is the value (α) − (a) obtained by subtracting the value (a) from the required amount (α). Rotate in the direction, and the three wiring members 20a, 20b, and 20c are moved.

  iv) As shown in FIG. 7, all the wiring members 20a, 20b, and 20c are simultaneously locked by the lock parts 120a, 120b, and 120c, and the positions shown in FIG. 5B by the cutter parts 130a, 130b, and 130c ( It is cut at (i), (c) and (a). The cut unnecessary part is discarded in the disposal tray 90.

  According to the third embodiment, similarly to the first and second embodiments, unnecessary portions can be automatically cut based on the shape of the wiring material.

  An example of setting the necessary amount α in the first to third embodiments will be described with reference to FIG.

  FIG. 8A shows a setting example in the case of cutting on the left side (opposite side of the cutter side) from the first reference line A, and FIG. 8B is the right side of the first reference line A (cutter side). ) Is an example of setting when cutting. The distance between the position 401 of the cutter unit and the first reference line A is constant. As shown in FIG. 16A, the L length is constant. As shown in FIG. 16B, the length of the wiring material at the head is constant.

  In FIG. 8A, an amount α is obtained by adding the distance between the position 401 of the cutter unit 401 and the first reference line A to the length obtained by subtracting the length T of the leading wiring member from the L length. The required amount when cutting on the left side (the cutter side and the opposite side) from the first reference line A.

  In FIG. 8B, the amount α obtained by subtracting the length T of the wiring member at the head portion from the distance between the position 401 of the cutter portion and the first reference line A is larger than that of the first reference line A. This is the required amount when cutting on the right side (cutter side).

  An example of the arrangement of the mounting table 30, the illumination units 41 and 42, and the imaging unit 50 in the solar cell wiring device according to the first to third embodiments is shown in FIG. As described above, the illumination units 41 and 42 may be arranged so that light can be irradiated obliquely from above the mounting table 30, and the imaging unit 50 may be arranged above the mounting table 30 so as to face the mounting table 30.

  In Embodiments 4 to 6 to be described below, by removing the distortion of the wiring material, light is reflected by the distortion of the wiring material instead of the reflection of the unevenness in the wiring material, and the imaging unit misrecognizes the unevenness. This avoids the phenomenon and automatically cuts unnecessary portions of the wiring material at appropriate positions.

  As in the first to third embodiments, in the following fourth to sixth embodiments, a case where the bus bar is assumed to have three solar cells and three wiring materials are used will be described.

  A schematic configuration common to solar cell wiring devices according to Embodiments 4 to 6 of the present invention is shown in a front view of FIG. 11A and a plan view of FIG.

  The fourth to sixth embodiments include a wiring material supply unit 10, a mounting table 30, a guide table 40, illumination units 41 and 42, an imaging unit 50, and a roller unit 170. The other components used in the process of cutting and discarding unnecessary portions of the wiring material 20 are the same as those in the first to third embodiments, and the description thereof is omitted.

  The mounting table 30 is arranged between the wiring material supply unit 10 and the roller unit 170 in the same manner as in the first to third embodiments, and images the wiring material 20 drawn from the wiring material supply unit 10 by the roller unit 170. For this reason, in the fourth to sixth embodiments, as shown in FIG. 11B, a groove 30a is formed corresponding to the position through which the wiring member 20 passes. The mounting table 30 is provided with a first reference line A for alignment in a direction orthogonal to the longitudinal direction of the wiring member 20 as in the first to third embodiments.

  The guide table 40 is a guide mechanism provided to prevent lateral displacement when the wiring member 20 passes, and guide grooves corresponding to the positions through which the wiring member 20 passes as shown in FIG. 40a is formed. For example, when the width of the wiring member 20 is 2.4 mm, the guide groove 40a has a width of about 2.6 mm and a depth of about 1 mm. Such guide grooves 40a are formed corresponding to the number and positions of the wiring members 20.

  In the fourth to sixth embodiments having the above-described configuration in common, the configuration unique to each embodiment will be described in detail.

(4) Embodiment 4
A solar cell wiring device according to Embodiment 4 of the present invention will be described with reference to the front view of FIG. FIG. 12A shows the arrangement of the guide roller 13, the mounting table 30, and the guide table 40, and FIG. 12B shows the state when the wiring member 20 is imaged.

  As shown in FIG. 12A, the position of the bottom surface of the groove of the guide roller 13, that is, the position in the height direction where the wiring material 20 is supplied from the wiring material supply unit 10, and the bottom surface of the guide groove 40 a of the guide table 40. Are set to have the same reference height 180. On the other hand, the position of the bottom surface of the groove 30 a of the mounting table 30 is set to a position higher than the reference height 180.

  For example, the depth of the guide groove 40a of the guide table 40 is 1 mm, and the depth of the groove 30a of the mounting table 30 is 0.2 mm. The wiring member 20 is always sandwiched between the upper roller 170a and the lower roller 170b to maintain the reference height 180. On the other hand, the groove 30 a of the mounting table 30 is at a position where the bottom surface is higher than the guide groove 40 a of the guide table 40. For this reason, as shown in FIG. 12B, even if the wiring member 20 has the curl of the bobbin 11, the wiring member 20 is lifted upward by the groove 30 a on the mounting table 30, and tension is applied. The surface becomes flat. By capturing an image of the surface of the wiring member 20 in such a state, it is possible to avoid a situation in which the uneven portion is erroneously recognized.

  The process of cutting and discarding unnecessary portions of the wiring member 20 is the same as that in the first to third embodiments, and the description thereof is omitted.

(5) Embodiment 5
A solar cell wiring device according to Embodiment 5 of the present invention will be described with reference to FIG. The front view of FIG. 13A shows the arrangement of the guide rollers 13, the mounting table 30, and the guide table 40, and the front view of FIG. 13B shows the state when the wiring member 20 is imaged. ) Shows the mounting table vertical movement mechanism. In addition, the same code | symbol is attached | subjected to the component same as the said Embodiment 4, and the overlapping description is abbreviate | omitted.

  As shown in FIG. 13A, the position of the bottom surface of the groove of the guide roller 13 and the position of the bottom surface of the guide groove 40 a of the guide table 40 are set to the same reference height 180. Furthermore, unlike the fourth embodiment, the position of the groove 30a of the mounting table 30 is set to be the same reference height 180 as the position of the bottom surface of the guide groove 40a of the guide table 40.

  The mounting table 30 in the fifth embodiment is connected to the mounting table vertical movement mechanism 32. As shown in FIG. 13C, the mounting table vertical movement mechanism 32 includes a mounting table fixture 32a that fixes the mounting table 30, and a shaft 32b that is connected to the mounting table fixture 32a and is driven up and down by a mechanism such as a cylinder. And an LM (Linear Motion) guide (registered trademark) 32c for guiding the mounting table fixture 32a that moves up and down by the shaft 32b, and a fixture 32d for fixing the LM guide 32c. Thereby, the mounting table 30 can move in the vertical direction.

  The wiring member 20 is always sandwiched between the upper roller 170a and the lower roller 170b, and the position in the height direction maintains the reference height 180. When imaging the wiring member 20, as shown in FIG. 13B, the mounting table 30 is raised by the mounting table vertical movement mechanism 32, so that the position of the bottom surface of the groove 30 a of the mounting table 30 becomes the guide groove of the guide table 40. It becomes higher than the position of the bottom surface of 40a. For this reason, as shown in FIG. 13B, even if the bobbin 11 has wrinkles on the wiring member 20, it is temporarily lifted upward by the groove 30a on the mounting table 30 and applied with tension during imaging. Therefore, the surface of the wiring member 20 becomes flat. By capturing an image of the surface of the wiring member 20 in such a state, it is possible to avoid a situation in which the uneven portion is erroneously recognized.

  The mounting table vertical movement mechanism is not limited to a mechanism using a cylinder. For example, a servo motor or the like may be used as long as it can move the mounting table up and down.

  Further, the process of cutting and discarding unnecessary portions of the wiring member 20 is the same as that in the first to third embodiments, and the description thereof is omitted.

(6) Embodiment 6
A solar cell wiring device according to Embodiment 6 of the present invention will be described with reference to FIG. The front view of FIG. 14A shows the arrangement of the guide rollers 13, the mounting table 30, and the guide table 40, and the front view of FIG. 14B shows the state when the wiring member 20 is imaged. ) Shows the mounting table 30 and the guide table 40, and the front view of FIG. 14D shows the internal structure of the mounting table 30. In addition, the same code | symbol is attached | subjected to the component same as the said Embodiment 4, 5, and the overlapping description is abbreviate | omitted.

    As shown in FIG. 14A, the position of the bottom surface of the groove of the guide roller 13 and the position of the bottom surface of the guide groove 40 a of the guide table 40 are set to have the same reference height 180. Further, similarly to the fifth embodiment, the position of the bottom surface of the groove 30a of the mounting table 30 is set to be the same reference height 180 as the position of the bottom surface of the guide groove 40a of the guide table 40.

  Even when the wiring member 20 is photographed, as shown in FIG. 14B, the position of the bottom surface of the groove of the guide roller 13, the position of the bottom surface of the groove 30 a of the mounting table 30, and the guide groove 40 a of the guide table 40. The position of the bottom is all the same reference height 180.

  In the sixth embodiment, as shown in FIG. 14C, the suction hole 33 for sucking the wiring member 20 downward from the bottom surface at the time of imaging is provided on the bottom surface of the groove 30a of the mounting table 30. Yes. The suction holes 33 are formed at regular intervals on the bottom surfaces of the grooves 30a1, 30a2, and 30a3 provided corresponding to the three wiring members 20, respectively.

  As shown in FIG. 14 (d), a suction hole 33 is formed on the bottom surface of the groove 30 a of the mounting table 30, and a pipe 34 is provided along the same direction as the groove 30 a so as to be connected to the suction hole 33. Yes. A joint 35 provided on one end surface of the mounting table 30 is connected to a pipe 34 provided in the mounting table 30. The joint 35 is connected to one of the ejectors 36 a and 36 b outside the mounting table 30. The ejectors 36a and 36b are connected to an air suction pump (not shown). As a result, the air in the groove 30 a is sucked into the suction hole 33, and a downward suction force acts on the wiring member 20 placed on the upper surface of the suction hole 33.

  The wiring member 20 is always sandwiched between the upper roller 170a and the lower roller 170b, and maintains the reference height 180. At the time of imaging, the suction pump is operated to suck the wiring member 20 through the suction hole 33 on the bottom surface of the groove 30a of the mounting table 30. For this reason, as shown in FIG. 14B, even if the bobbin 11 has wrinkles on the wiring member 20, it is temporarily attached to the groove 30a on the mounting table 30 at the time of imaging. The surface of the wiring material 20 becomes flat. By capturing an image of the surface of the wiring member 20 in such a state, it is possible to avoid a situation in which the uneven portion is erroneously recognized.

  Further, the process of cutting and discarding unnecessary portions of the wiring member 20 is the same as that in the first to third embodiments, and the description thereof is omitted.

  In the sixth embodiment, as shown in FIG. 14C, among the three grooves 30a1, 30a2, 30a3, the suction holes 33 of the grooves 30a1, 30a3 at both ends are connected to the same ejector 36a, The suction hole 33 of the central groove 30a2 is connected to another ejector 36b. By comprising in this way, when the number of the bus bars of a photovoltaic cell is 3, the ejectors 36a and 36b are opened and closed simultaneously, and adsorption | suction ON / OFF is switched simultaneously. On the other hand, when the number of bus bars is two, the two grooves 30a1 and 30a3 are used, only one ejector 36a is opened and closed, and the other ejector 36b is not operated, so that simple control according to the number of bus bars is performed. Is possible.

  Although Embodiments 1 to 6 of the present invention have been described, these embodiments are presented as examples and are not intended to limit the technical scope of the invention. These novel embodiments can be implemented in various other forms, and various omissions, replacements, and changes can be made without departing from the scope of the invention. These embodiments and modifications thereof are included in the technical scope and gist of the invention, and are also included in the invention described in the claims and the equivalents thereof.

  For example, in the first to third embodiments, as shown in the plan view of FIG. 10A and the front view of FIG. 10B, the wiring member 20 is disposed in front of the imaging unit 50 so as to face each other. The plurality of rollers 140a to 140g for sandwiching the wiring member 20 are provided, and the wiring member 20 is passed between the rollers 140a to 140c and the rollers 140d to 140g to remove the curl of the wiring member 20, and the wiring member 20 You may make it prevent the erroneous detection of the uneven part by the reflection which arises from distortion.

  Moreover, in the said Embodiment 1-6, although the illumination parts 41 and 42 were provided, as long as the reflection of an uneven surface can be confirmed clearly on the image | photographed image, you may provide as many as a light source, such as LED. You may use a thing with high directivity.

  Further, the mounting table 30 is a matte processing table with little reflection on the photographed image, and a matting masking tape or an arbitrarily shaped plate-like member is formed in a direction perpendicular to the longitudinal direction of the wiring member. You may affix on a mounting base and set the end surface of a tape or a plate-shaped member as a 1st reference line. Furthermore, the color of the matte portion of the mounting table and the first reference line may be set to an easily comparable color such as black or white so that the first reference line can be identified in the captured image.

  In the first to sixth embodiments, the wiring material is one in which concave and convex portions and portions having no concave and convex portions are alternately provided on one surface. However, the present invention is not limited to this, as long as two regions having different light reflection characteristics are provided alternately on at least one surface, and two regions are provided alternately on the upper and lower surfaces. Also good.

  In the first to sixth embodiments, as the wiring material moving unit that moves the wiring material, a chuck unit that chucks and moves the wiring material, or a roller unit that is nipped between the upper and lower rollers and sent out, is used. However, the present invention is not limited to this, as long as the wiring material can be moved.

  Furthermore, in the first to sixth embodiments, three wiring materials are used. However, the present invention is not limited to this, and the present invention can be similarly applied to the case where two or four or more wiring members are used.

  In Embodiments 4 to 6 described above, the roller unit 170 is used as the wiring material moving unit. However, the present invention is not limited to this mechanism, and any mechanism can be used as long as the wiring material can be pulled out and moved.

  In the fourth embodiment, the position of the bottom surface of the groove 30a of the mounting table 30 is set higher than the position of the bottom surface of the guide groove 40a of the guide table 40. In the fifth embodiment, the groove of the mounting table 30 is set. The mounting table vertical movement mechanism 32 is provided so that the position of the bottom surface of 30a is higher than the position of the bottom surface of the guide groove 40a of the guide table 40. In the sixth embodiment, the suction hole is formed in the bottom surface of the groove 30a of the mounting table 30. 33 is provided. However, the position of the bottom surface of the groove 30a of the mounting table 30 is set to be the same as the position of the bottom surface of the guide groove 40a of the guide table 40, the mounting table vertical movement mechanism 32 is not provided, and the groove 30a of the mounting table 30 is provided. Even when the suction hole 33 is not provided on the bottom surface, the wiring member 20 can be guided in a predetermined direction to prevent lateral displacement, and belongs to the technical scope of the present invention.

DESCRIPTION OF SYMBOLS 10 Wiring material supply part 11 Bobbin 12 Level difference roller 13 Guide rollers 20, 20a, 20b, 20c Wiring material 30 Mounting base 30a, 30a1, 30a2, 30a3 Groove 32 Mounting base vertical movement mechanism 32a Mounting base fixing tool 32b Shaft 32c LM guide 32d Fixing tool 33 Suction hole 34 Pipe 35 Joint 36a, 36b Ejector 40 Guide table 40a, 40a1, 40a2, 40a3 Guide groove 41, 42 Illumination part 50 Imaging part 60, 60a, 60b, 60c, 120, 120a, 120b, 120c Lock part 70, 70a, 70b, 70c, 130, 130a, 130b, 130c Cutter unit 80, 80a, 80b, 80c Chuck unit 90 Waste tray 100 Supply unit 110, 110a, 110b, 110c, 170 Roller unit 140a, 140b, 140 , 140d, 140e, 140f, 140g roller

Claims (23)

A wiring material supply unit that supplies a plurality of predetermined wiring materials in which first regions and second regions having different light reflection characteristics are alternately provided on at least one surface;
A mounting table on which the wiring material supplied by the wiring material supply unit is mounted, and a first reference line for positioning the wiring material is provided;
An illumination unit for irradiating light to the wiring member placed on the mounting table;
An imaging unit for capturing an image of the wiring member illuminated by the illumination unit;
The coordinates of the second reference line of the boundary line between the first area and the second area when the first reference line is used as the origin of the coordinate axis based on the image captured by the imaging unit A distance detector for detecting a value for each wiring member;
In order to move the wiring material placed on the mounting table in a direction orthogonal to the first reference line, a wiring material moving portion provided for each wiring material,
A drive unit for driving the wiring material moving unit;
A control unit for controlling the operation of the driving unit;
A transmission unit that transmits the coordinate value detected by the distance detection unit to the control unit;
With
In a state where a plurality of the wiring materials are placed on the mounting table,
The wiring member illuminated by the illumination unit is imaged by the imaging unit,
The distance detection unit detects the coordinate value of the second reference line when the first reference line is the origin of the coordinate axis for each wiring member,
The detected coordinate value is transmitted to the control unit by the transmission unit,
Based on the detected coordinate value, the control unit obtains the distance to the cutting position of each wiring material, and controls the driving unit so that the wiring material moving unit controls each wiring material. A wiring device for a solar battery cell, wherein the distance to the cut position is moved.   The said illumination part contains LED, The wiring apparatus of the photovoltaic cell of Claim 1 characterized by the above-mentioned.   3. The solar cell wiring device according to claim 1, wherein the driving unit is individually provided for each of the plurality of wiring material moving units.   The said drive part is provided with respect to the said several wiring material moving part, The wiring apparatus of the photovoltaic cell of Claim 1 or 2 characterized by the above-mentioned.   The wiring material moving unit includes a chuck that moves the wiring material by gripping and pulling out a tip portion of the wiring material, or a roller that moves the wiring material by rotating in a state where the wiring material is sandwiched. The wiring device for a solar battery cell according to any one of claims 1 to 3, wherein   2. The apparatus according to claim 1, further comprising: a lock portion provided for each wiring material for locking the wiring material; and a cutter portion provided for each wiring material for cutting the wiring material. The wiring apparatus of the photovoltaic cell as described in any one of thru | or 5. A guide mechanism provided adjacent to the mounting table, wherein a guide groove is formed in a surface portion corresponding to a position through which the wiring material passes;
The wiring material moving unit maintains a position in the height direction of the wiring material that has passed through the guide groove of the guide mechanism,
The mounting table has a groove formed on the surface portion corresponding to the position where the wiring material passes,
In the state where the position in the height direction of the wiring material that has passed through the groove of the mounting table and the guide groove of the guide mechanism is maintained by the wiring material moving unit, the wiring material is imaged by the imaging unit. The wiring device for a solar battery cell according to any one of claims 1 to 6, wherein:   The solar cell wiring device according to claim 7, wherein the position of the bottom surface of the groove of the mounting table is set higher than the position of the bottom surface of the guide groove of the guide mechanism.   In order to change the relative relationship between the position of the bottom surface of the groove of the mounting table and the position of the bottom surface of the guide groove of the guide mechanism, a mounting table vertical movement mechanism for moving the mounting table in the vertical direction is further provided. The solar cell wiring device according to claim 7.   The solar cell wiring device according to claim 7, wherein an adsorption hole for adsorbing the wiring material is formed on a bottom surface of the groove of the mounting table.   Before the imaging unit for taking an image of the wiring material supplied from the wiring material supply unit, the wiring material is disposed so as to face each other in order to remove curl of the wiring material, and passes through the wiring material. The solar cell wiring device according to claim 1, further comprising a plurality of rollers to be operated. A wiring material supply unit that supplies a plurality of predetermined wiring materials in which first regions and second regions having different light reflection characteristics are alternately provided on at least one surface;
A mounting table on which the wiring material supplied by the wiring material supply unit is mounted, and a first reference line for positioning the wiring material is provided;
An illumination unit for irradiating light to the wiring member placed on the mounting table;
An imaging unit for capturing an image of the wiring member illuminated by the illumination unit;
The coordinates of the second reference line of the boundary line between the first area and the second area when the first reference line is used as the origin of the coordinate axis based on the image captured by the imaging unit A distance detector for detecting a value for each wiring member;
In order to move the wiring material placed on the mounting table in a direction orthogonal to the first reference line, a wiring material moving portion provided for each wiring material,
A drive unit for driving the wiring material moving unit;
A control unit for controlling the operation of the driving unit;
A transmission unit that transmits the coordinate value detected by the distance detection unit to the control unit;
A solar cell wiring method in a solar cell wiring device comprising:
A step of supplying each of the plurality of wiring materials by the wiring material supply unit and placing them on the mounting table;
A step of taking an image of the wiring member illuminated by the illumination unit by the imaging unit;
A step of detecting a coordinate value of the second reference line when the distance detection unit uses the first reference line as an origin of a coordinate axis for each wiring member;
Transmitting the detected coordinate value to the control unit by the transmitting unit;
A step of obtaining a distance to the cut position of each wiring member based on the detected coordinate value by the control unit;
A step of controlling the drive unit by the control unit so that the wiring material moving unit moves the wiring material to a distance to each of the cut positions;
A method for wiring solar cells, comprising: The drive unit is individually provided for each of the plurality of wiring material moving units,
In the step of controlling the drive unit, the drive unit is individually controlled by the control unit so that the wiring material moving unit moves the wiring material to the respective cut positions. The solar cell wiring method according to claim 12. The drive unit is provided for a plurality of the wiring material moving units,
In the step of controlling the driving unit, the control unit collectively controls the driving unit so that the wiring material moving unit moves the wiring material to a distance to each of the cut positions. The wiring method of the photovoltaic cell of Claim 12.   In the step of controlling the drive unit, the wiring unit performs the wiring in order from the largest coordinate value of the second reference line when the first reference line of the wiring member is the origin of the coordinate axis. The solar cell wiring method according to claim 14, wherein the driving unit is collectively controlled so that the material moving unit moves the wiring material to a distance to each of the cut positions. The solar cell wiring device further includes: a lock portion provided for each of the wiring materials to lock the wiring material; and a cutter portion provided for each of the wiring materials to cut the wiring material. Prepared,
After the step of controlling the drive unit by the control unit so that the wiring material moving unit moves the wiring material to the respective cut positions,
A step of locking the wiring member by the lock portion;
The method of wiring a solar cell according to any one of claims 12 to 15, further comprising a step of cutting the locked wiring member by the cutter unit.   In the step of obtaining the distance to the cut position of the wiring member, the distance between the first reference line and the second reference line is the sum of the lengths of the first region and the second region. The length obtained by subtracting the length of the leading wiring member from the length and the distance from the first reference line to the cutter unit are added. 17. The solar cell according to claim 12, Wiring method.   In the step of obtaining the distance to the cut position of the wiring member, the distance between the first reference line and the second reference line is set to a distance from the distance from the first reference line to the cutter part. The method of wiring a solar battery cell according to any one of claims 12 to 16, wherein a length obtained by subtracting the length of the wiring material is added. The solar cell wiring device comprises:
A guide mechanism provided adjacent to the mounting table, wherein a guide groove is formed in a surface portion corresponding to a position through which the wiring material passes;
The wiring material moving unit maintains the position in the height direction of the wiring material that has passed through the guide groove of the guide mechanism,
The mounting table has a groove formed on the surface portion corresponding to the position where the wiring material passes,
In the step of taking an image of the wiring material by the imaging unit, the position in the height direction of the wiring material that has passed through the groove of the mounting table and the guide groove of the guide mechanism is maintained by the wiring material moving unit. The method of wiring solar cells according to any one of claims 12 to 18, wherein an image is taken in a closed state. In the step of taking an image of the wiring material by the imaging unit,
The method of wiring a solar battery cell according to claim 19, wherein an image is taken in a state in which a position of the bottom surface of the groove of the mounting table is set higher than a position of the bottom surface of the guide groove of the guide mechanism. . In order to change the relative relationship between the position of the bottom surface of the groove of the mounting table and the position of the bottom surface of the guide groove of the guide mechanism, the wiring device of the solar battery cell moves the mounting table in the vertical direction. It further includes a mounting table vertical movement mechanism,
In the step of taking an image of the wiring member by the imaging unit, the position of the bottom surface of the groove of the mounting table is set higher than the position of the bottom surface of the guide groove of the guide mechanism by the mounting table vertical movement mechanism. 20. The solar cell wiring method according to claim 19, wherein an image is taken in a state. An adsorption hole for adsorbing the wiring material is formed on the bottom surface of the groove of the mounting table,
The image capturing of the wiring material by the imaging unit includes capturing an image in a state where the wiring material is adsorbed to the bottom surface of the groove of the mounting table by the suction hole. Solar cell wiring method. The solar cell wiring device further includes a plurality of rollers arranged to face the wiring material in between and passing the wiring material,
13. The method of claim 12, further comprising a step of removing curl of the wiring material by the roller before the step of taking an image of the wiring material supplied from the wiring material supply unit by the imaging unit. The wiring method of the photovoltaic cell as described in any one of thru | or 18.

Images