JP3181776U - Solar cell module manufacturing equipment - Google Patents

Abstract

An apparatus for manufacturing a solar cell module capable of effectively suppressing or preventing cracking of a solar battery cell and transfer of an adhesive layer while reducing a peeling force of a back sheet is provided.
An apparatus for manufacturing a solar cell module is provided above a base plate, and moves relative to the base plate to peel off a back sheet from a sealing material, and a curved surface that presses the surface of the back sheet. A guide member 30 having a portion 30B and peeling the back sheet 28 along the curved surface portion 30B, and a moving means for moving the guide member 30 in the moving direction of the peeling means 40 are provided.
[Selection] Figure 1

Description

  The present invention relates to an apparatus for manufacturing a solar cell module, and more particularly to an apparatus for peeling a back sheet of a solar cell module.

  The popularization of solar power generation, which emits no carbon dioxide during power generation and has a low environmental impact, is being promoted. A solar cell module is generally used for this photovoltaic power generation. The solar cell module includes a translucent glass substrate and a plurality of solar cells arranged on the surface opposite to the side on which the sunlight is incident. The solar battery cell is sealed with a sealing material made of a resin material, and is protected from the external environment. On the surface of the sealing material, a back sheet formed of a resin film is bonded in order to prevent moisture from entering the solar cells from the external environment.

  In the manufacturing process of the solar cell module, when a defect such as a power generation failure exists in the solar cell in the final inspection process, a rework operation is performed in which the defective solar cell is replaced with a non-defective solar cell. By performing the rework work, the yield in manufacturing the solar cell module can be greatly improved. In the rework operation, after the back sheet bonded to the surface of the sealing material sealing the solar battery cell is peeled off, the solar battery cell is replaced, and a process of newly bonding the back sheet on the solar battery cell is performed. is necessary.

JP 2008-209530 A

  In order to increase the reliability in a harsh external environment, the adhesive strength of the back sheet is set strongly in the solar cell module. For this reason, a very large peeling force is required for peeling the back sheet once bonded on the surface of the sealing material. Even if the back sheet is peeled off, the sealing material and the solar battery cells are lifted from the translucent glass substrate by a large peeling force, and stress is applied to the solar battery cells, so that the non-defective solar battery cells are cracked. There is concern. Moreover, the sealing material easy-adhesion layer formed on the back sheet side is transferred to the surface side of the sealing material by applying a large peeling force, and the sealing material easy-adhesion layer becomes uneven on the surface of the sealing material. There is concern that it will remain. The unevenness of the sealing material easy-adhesion layer becomes a step on the surface of the sealing material, for example, and it is difficult to form a new back sheet. Even if it forms, it will become a problem that it will become a color spot.

  Patent Document 1 discloses a pressure-sensitive adhesive film peeling method and a peeling apparatus for peeling a pressure-sensitive adhesive film attached to an adhesion surface of an adherend. According to this method and apparatus, the peeling plate to which the peeled part of the pressure-sensitive adhesive film is attached is moved in a direction to peel parallel to the peeled surface of the adherend, and the direction in which the pressure-sensitive adhesive film is peeled and pulled Is set to an angle larger than 90 degrees with respect to the peeled surface of the adherend. In this disclosed method and apparatus, a polarizing plate attached to a liquid crystal display panel with an adhesive is used as an adhesive film, and consideration is given to reducing the peeling force. However, no consideration has been given to the cracking of the solar battery cells and the transfer of the sealing material easy-adhesion layer, which are indispensable for the solar battery module, and there is room for improvement in application to peeling of the back sheet of the solar battery module.

  In consideration of the above-described facts, the present invention provides a solar cell module manufacturing apparatus that can effectively suppress or prevent cracking of solar cells and transition of an adhesive layer while reducing the peeling force of a backsheet. Is the purpose.

  In order to solve the above problems, a solar cell module manufacturing apparatus according to a first aspect of the present invention includes a solar cell provided on one surface of a translucent substrate, and covers the solar cell. A base plate on which a solar cell module having a sealing material to be sealed and a back sheet covering the sealing material is placed, and provided above the base plate and moved relative to the base plate to move from the sealing material to the back sheet A peeling means for peeling the back sheet, a curved surface portion for pressing the surface of the back sheet, a guide member for peeling the back sheet along the curved surface portion, and a moving means for moving the guide member in the moving direction of the peeling means, It is equipped with.

  In the solar cell module manufacturing apparatus according to the first aspect, the solar cell module is placed on the base plate, and the back sheet is peeled off from the sealing material by the peeling means. When the guide member is moved in the movement direction together with the peeling means by the moving means, the back sheet is continuously peeled from the surface of the sealing material over the curved surface portion of the guide member.

  Here, since the back sheet is peeled off along the curved surface portion of the guide member, the guide member does not bite into the back sheet, and the slip of the peeled back sheet at the curved surface portion becomes smooth. For this reason, the tension | tensile_strength (peeling force) required for peeling of a backsheet can be reduced. Moreover, the surface immediately before peeling of the back sheet is pressed by the curved surface portion of the guide member. For this reason, in the vicinity of the peeling part of a sealing material and a back sheet, since the floating of the sealing material and a photovoltaic cell from a translucent board | substrate is suppressed, the sealing material accompanying peeling of a back sheet, and The stress applied to the solar battery cell can be reduced.

  The solar cell module manufacturing apparatus according to claim 2 is the solar cell module manufacturing apparatus according to claim 1, wherein the solar cell module manufacturing apparatus presses the surface of the sealing material from which the back sheet has been peeled off together with the guide member. It further includes a moving sealing material pressing portion.

  In the solar cell module manufacturing apparatus according to claim 2, since the surface of the sealing material immediately after peeling of the backsheet is pressed by the sealing material pressing portion, the sealing material and the sun from the translucent substrate The lift of the battery cell is suppressed. For this reason, the stress added to the sealing material and photovoltaic cell accompanying peeling of a back sheet | seat can be reduced.

  In the manufacturing apparatus of the solar cell module according to the invention described in claim 3, in the manufacturing apparatus of the solar cell module according to claim 1 or 2, the sealing material pressing portion is formed on the surface of the sealing material. The end of the crossing direction that intersects the moving direction is held down.

  According to the solar cell module manufacturing apparatus of the third aspect, the adhesive force between the translucent substrate of the solar cell module and the sealing material is weaker at the end than at the intermediate portion. By lifting the surface of the sealing material with the sealing material pressing portion in the region where the adhesive force is weak, the floating of the sealing material and the solar battery cell from the translucent substrate is suppressed. For this reason, the stress added to the sealing material and photovoltaic cell accompanying peeling of a back sheet | seat can be reduced.

  In the manufacturing apparatus of the solar cell module which concerns on the device described in Claim 4, In the manufacturing apparatus of the solar cell module of any one of Claims 1-3, a peeling means is the peeled back sheet | seat. Is provided with a winding unit for rotating and winding.

  According to the solar cell module manufacturing apparatus described in claim 4, the peeling means includes the winding unit, and the back sheet is wound up by the winding unit. It can be recovered while taking. Further, it is possible to generate a tension necessary for peeling the back sheet.

  In the manufacturing apparatus of the solar cell module which concerns on the device described in Claim 5, The relative position of a peeling means and a guide member in the manufacturing apparatus of the solar cell module of any one of Claims 1-4. Is further provided with a peeling angle adjusting means for adjusting the peeling angle from the surface of the sealing material to the back sheet peeled and raised.

  According to the solar cell module manufacturing apparatus described in claim 5, since the peeling angle can be adjusted by the peeling angle adjusting means, the peeling angle that can reduce the tension required for peeling the backsheet is reduced. Can be adjusted.

  In the manufacturing apparatus of the solar cell module according to the invention described in claim 6, in the manufacturing apparatus of the solar cell module according to claim 5, the peeling angle adjusting means moves the guide member in the moving direction with respect to the peeling means. The peel angle is adjusted by moving it.

  According to the solar cell module manufacturing apparatus of the sixth aspect, the peeling angle adjusting means can be constructed with a simple configuration in which the guide member is moved in the moving direction with respect to the peeling means.

  In the manufacturing apparatus of the solar cell module according to the invention described in claim 7, in the manufacturing apparatus of the solar cell module according to claim 5, the peeling angle adjusting means moves the peeling means in the moving direction or with respect to the guide member. The peel angle is adjusted by moving it up and down.

  According to the solar cell module manufacturing apparatus of the seventh aspect, it is possible to construct the peeling angle adjusting means with a simple configuration in which the peeling means is moved in the moving direction or the vertical direction with respect to the guide member.

  In the solar cell module manufacturing apparatus according to the eighth aspect of the present invention, in the solar cell module manufacturing apparatus according to the fifth aspect, the peeling angle adjusting means is disposed between the guide member and the peeling means. And an adjusting member moving mechanism that moves the angle adjusting member in the moving direction or the up and down direction. The adjusting member moving mechanism moves the angle adjusting member to set the peeling angle. It is adjusted.

  According to the solar cell module manufacturing apparatus of claim 8, the peeling angle adjusting means has a simple configuration including an angle adjusting member that contacts the back sheet and an adjusting member moving mechanism that moves the angle adjusting member. Can be built.

  The solar cell module manufacturing apparatus according to any one of claims 1 to 8, wherein the guide member is the entire width of the back sheet. It is a plate that holds down.

  According to the solar cell module manufacturing apparatus of the ninth aspect, the guide member can be constructed by a simple member of the plate.

  The solar cell module manufacturing apparatus according to claim 10, wherein the curvature radius of the curved surface portion is 0.5 mm in the solar cell module manufacturing apparatus according to any one of claims 1 to 9. It is set within a range of ˜7.0 mm.

  According to the solar cell module manufacturing apparatus described in claim 10, since the curvature radius of the curved surface portion is set to 0.5 mm or more, the curved surface portion does not bite into the back sheet. The backsheet slips smoothly. On the other hand, since the curvature radius of the curved surface portion is set to 0.7 mm or less, an increase in frictional force accompanying an increase in the contact area between the curved surface portion and the back sheet is reduced. Sliding becomes smooth. Therefore, the tension applied to the back sheet peeled off from the sealing material can be reduced by setting the radius of curvature within the above range.

  In the manufacturing apparatus of the solar cell module which concerns on the device described in Claim 11, In the manufacturing apparatus of the solar cell module of any one of Claims 1-10, a peeling angle adjustment means is a peeling angle. Adjustment is made within the range of 90 to 170 degrees.

  According to the solar cell module manufacturing apparatus described in claim 11, since the peel angle of the back sheet is adjusted within the range of 90 degrees to 170 degrees, it is added to the back sheet peeled from the sealing material. Tension can be reduced. If the back sheet side is provided with a sealing material easy-adhesion layer and the back sheet is adhered to the surface of the sealing material via the sealing material easy-adhesion layer, the back sheet side to the sealing material side It is possible to effectively suppress or prevent the transfer of the easy-to-adhere sealing material layer due to peeling.

  A solar cell module manufacturing apparatus according to a twelfth aspect of the present invention is the solar cell module manufacturing apparatus according to any one of the first to eleventh aspects, wherein a hot plate is provided on the base plate. The hot plate is heated within a temperature range obtained by adding the sealing material temperature from the softening point temperature to the softening point temperature by 80 degrees.

  According to the solar cell module manufacturing apparatus described in claim 12, since the adhesive force between the sealing material and the back sheet decreases when the sealing material is heated to a temperature higher than the softening point temperature by a hot plate, the sealing material The back sheet becomes easy to peel off. On the other hand, by adjusting the heating temperature of the encapsulant to be equal to or lower than the temperature obtained by adding 80 degrees to the softening point temperature, it is possible to effectively lift or exfoliate the encapsulant from the translucent substrate when the backsheet is peeled Can be suppressed or prevented.

  Since the present invention has the above-described configuration, it is possible to provide a solar cell module manufacturing apparatus capable of effectively suppressing or preventing cracking of solar cells and transition of an adhesive layer while reducing the peeling force of the backsheet. An excellent effect is obtained.

It is a partial cross section perspective view which expands and shows the principal part of the manufacturing apparatus of the solar cell module which concerns on 1st Embodiment of this invention. It is side surface sectional drawing which expands and shows the peeling state of a back sheet in the manufacturing apparatus of the solar cell module shown in FIG. It is a whole top view of the manufacturing apparatus of the solar cell module shown in FIG. It is side surface sectional drawing which shows the peeling angle adjustment mechanism of the manufacturing apparatus of the solar cell module which concerns on 1st Embodiment or 2nd Embodiment. It is a figure which shows the Example and comparative example of 1st Embodiment. It is side surface sectional drawing which shows the peeling angle adjustment mechanism of the manufacturing apparatus of the solar cell module which concerns on 3rd Embodiment of this invention.

  Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. In the drawings, components having the same function are denoted by the same reference numerals, and overlapping descriptions are omitted as appropriate. Moreover, the direction which is suitably shown in drawing and attached | subjected code | symbol EA has shown the peeling direction which peels the back sheet | seat of a solar cell module in the manufacturing apparatus which concerns on this invention. In addition, the direction with the sign CA indicates the crossing direction (here, the direction orthogonal to the horizontal plane) intersecting the peeling direction, and the direction with the sign UA is in the peeling direction and the crossing direction. An orthogonal upward direction is shown.

[First Embodiment]
The solar cell module manufacturing apparatus according to the first embodiment of the present invention will be described with reference to FIGS.

(Overall configuration of solar cell module manufacturing equipment)
As shown in FIG. 3, the solar cell module manufacturing apparatus 10 according to the first embodiment is arranged along the peeling direction (EA) and the crossing direction (CA), and has a rectangular plane in plan view. A base plate 12 having a mounting surface 12A formed by a shape is provided. The solar cell module 20 can be placed on the placement surface 12 </ b> A via the hot plate 14. The hot plate 14 has a function of heating the solar cell module 20, particularly a sealing material 26, which will be described later with reference to FIG. 2, within an appropriate temperature range and reducing the adhesive force between the sealing material 26 and the back sheet 28. Have. A heating control unit (not shown) for adjusting the temperature is connected to the hot plate 14.

  As shown in FIGS. 1 to 3, above the base plate 12, the base plate 12 moves relative to the base plate 12 via the hot plate 14 and the solar cell module 20 placed on the surface of the hot plate 14. A peeling means 40 for peeling the back sheet 28 is provided. Between the base plate 12 and the peeling means 40, the solar cell module 20 has a curved surface portion 30B that presses the surface of the back sheet 28, and the back sheet 28 is peeled along the curved surface portion 30B. A guide member 30 is provided. The moving direction of the peeling means 40 is the peeling direction, and a moving means 70 that moves the guide member 30 in the moving direction together with the peeling means 40 is provided.

  Further, a sealing material pressing unit 50 is provided on the rear side of the guide member 30 in the peeling direction, and a sheet pressing unit 60 is provided on the front side of the guide member 30 in the peeling direction. Further, as shown in FIG. 4, the guide member 30 is provided with a guide member moving mechanism 32 of a peeling angle adjusting means for adjusting the peeling angle θ of the back sheet 28. Detailed configurations of the sealing material pressing unit 50, the sheet pressing unit 60, and the peeling angle adjusting unit will be described later.

(Configuration of solar cell module)
As shown in FIG. 1 to FIG. 3, the solar cell module 20 covers the translucent substrate 22, the solar cell 24 provided on one surface of the translucent substrate 22, and the solar cell 24. A sealing material 26 to be sealed and a back sheet 28 that covers the sealing material 26 and is bonded to the sealing material 26 are provided. Although the translucent board | substrate 22 is not specifically limited to this planar shape, it is made into the rectangular shape by planar view. The other surface opposite to the one surface of the translucent substrate 22 is a sunlight incident surface, and the translucent substrate 22 is made of a material having a high light transmittance in order to increase power generation efficiency. For example, the translucent substrate 22 is formed of a transparent resin material such as a transparent glass material or an acrylic resin.

  The solar battery cell 24 has a function of converting light energy of sunlight into electric energy. A plurality of solar cells 24 are arranged in the row direction and the column direction on one surface of the translucent substrate 22 and are electrically connected in series. The solar battery cell 24 is formed of a silicon-based semiconductor material, a compound-based semiconductor material, or the like. Examples of the silicon-based semiconductor material include materials such as single crystal silicon, polycrystalline silicon, and amorphous silicon. Examples of the compound semiconductor material include materials such as III-V group compound semiconductors and II-VI group compound semiconductors. Specifically, materials such as copper-indium-gallium-selenium, copper-indium-selenium, cadmium-tellurium, and gallium-arsenide are used for the solar battery cell 24.

The sealing material 26 has a function of protecting the solar battery cell 24 from the external environment, and also has a function of bonding and fixing the solar battery cell 24 on one surface of the translucent substrate 22. For example, an ethylene-vinyl acetate (EVA) sealing material is used for the sealing material 26. The softening point of ethylene-vinyl acetate (EVA) sealant is 60 to 100 degrees. The back sheet 28 includes, for example, a polymer base material and a colored layer disposed directly on the polymer base material. Colored layer contains a binder such as an acid value is set to 2mgKOH / g~10mgKOH / g, and a pigment content was set to ^{2.5g / m 2 ~8.5g / m 2} , EVA sealing It has an adhesive force of 40 N / cm or more to the stopper. This colored layer is a sealing material easy adhesion layer that adheres the back sheet 28 to the sealing material 26. The thickness of the back sheet 28 is set to, for example, 0.1 mm to 0.5 mm, preferably 0.3 mm.

(Configuration of guide member)
As shown in FIGS. 1 to 3, the guide member 30 includes a guide member main body 30 </ b> A in which the cross direction and the direction parallel to the mounting surface 12 </ b> A are the longitudinal direction and the peeling direction is the short direction. That is, the guide member main body 30 </ b> A is a plate that holds the entire width of the back sheet 28. The guide member main body 30A includes a curved surface portion 30B having a curved surface projecting toward the peeling portion P side, and a guide from the curved surface portion 30B on the side of the peeling portion P (see FIG. 2) between the sealing material 26 and the back sheet 28. An inclined portion 30C inclined slightly upward to the member main body 30A is provided. Since the solar cell module 20 is heated by the hot plate 14, the guide member 30 is formed of a heat-resistant material that can obtain appropriate rigidity and hardness in a high temperature state. For example, a material such as stainless steel (SUS) or Teflon (registered trademark) can be used as the heat resistant material.

  The curvature radius R of the curved surface portion 30B shown in FIG. 2 is set in the range of 0.5 mm to 7.0 mm. When the curvature radius R is set to 0.5 mm or less, the curved surface portion 30 </ b> B is likely to bite into the surface of the backsheet 28. Conversely, when the radius of curvature R is set to 7.0 mm or more, both frictional forces increase as the contact area between the curved surface portion 30B and the backsheet 28 increases.

(Structure of peeling means)
As shown in FIGS. 1 and 3, the peeling means 40 includes a winding part 42 having a columnar shape extending with the crossing direction as an axial direction, and a rotating shaft fixed in the shaft hole of the winding part 42. 44 and a handle 46 (see FIG. 3) connected to the axial end of the rotating shaft 44. Although not particularly limited, in the present embodiment, a pair of handles 46 are provided at both ends of the rotating shaft 44 in the axial direction. Both ends of the rotating shaft 44 in the axial direction are provided as a pair at both ends of the crossing direction of the base plate 12 and are movable in the peeling direction, and can be freely rotated by the frame portion 72 of the moving means 70 that supports the peeling means 40 and the like. It is supported by.

  In the peeling means 40, one end of the back sheet 28 </ b> B peeled off from the sealing material 26 is bonded and fixed to the peripheral surface of the winding unit 42. In this state, when the lower handle 46 shown in FIG. 3 is rotated in the counterclockwise direction and the upper handle 46 is rotated in the clockwise direction, the winding unit 42 is rotated in the direction of arrow C, and the winding unit 42 A backsheet 28C that is unnecessary and is collected is wound on 42. By winding the back sheet 28C, an appropriate tension is generated in the back sheet 28B between the winding part 42 and the curved surface part 30B of the guide member 30. At least the peripheral surface of the winding unit 42 around which the back sheet 28C is wound is formed of a material to which the back sheet 28C can be bonded. For example, at least the peripheral surface of the winding unit 42 is formed of vinyl chloride.

(Configuration of sealing material pressing means)
As shown in FIGS. 1 to 3, the sealing material pressing means 50 presses the surface 26 </ b> A of the sealing material 26 from which the back sheet 28 </ b> A is peeled and exposed, and moves together with the guide member 30 in the peeling direction. The sealing material pressing parts 52 and 54 are provided. The distance from the peeled portion P to the sealing material pressing portions 52 and 54 is preferably as small as possible. However, in consideration of workability, the distance is set to 200 mm or less, more preferably 50 mm or less. The sealing material pressing portion 52 is configured to press the surface 26 </ b> A of the sealing material 26 at one end portion in the intersecting direction of the solar cell module 20. Further, the sealing material pressing portion 54 is provided as a pair with the sealing material pressing portion 52, and is configured to press the surface 26 </ b> A of the sealing material 26 at the other end portion in the intersecting direction of the solar cell module 20. Yes. That is, in this Embodiment, the sealing material pressing parts 52 and 54 are set as the structure which hold | suppresses only the both ends of the cross direction of the solar cell module 20. FIG. Here, the surface 26A of the sealing material 26 up to 50 mm or less is pressed inward from the end of the solar cell module 20 by the sealing material pressing portions 52 and 54.

  The sealing material pressing portions 52 and 54 are cylindrical (disk-shaped) rollers whose axial direction is the intersecting direction in order to improve the slipperiness with the surface 26A of the sealing material 26. Both of the sealing material pressing portions 52 and 54 are rotatably attached to the rotating shaft 56, and the rotating shaft 56 is supported by the frame portion 72 at both ends thereof. In the present invention, instead of the sealing material pressing portions 52 and 54, one roller that presses from one end to the other end of the sealing material 26 at a time may be used as the sealing material pressing portion.

(Configuration of sheet pressing means)
As shown in FIGS. 1 to 3, the sheet pressing unit 60 has the same configuration as the sealing material pressing unit 50, and presses the surface of the back sheet 28 </ b> A immediately before peeling, together with the guide member 30 in the peeling direction. There are provided sheet pressing portions 62 and 64 as moving forward pressing portions. The sheet pressing portions 62 and 64 press the surface of the back sheet 28 </ b> A only at both end portions of the solar cell module 20. Each of the sheet pressing portions 62 and 64 is a roller and is rotatably attached to the rotation shaft 66. The rotating shaft 66 is supported by the frame portion 72 at both ends thereof.

  As shown in FIG. 1 and FIG. 2, in the solar cell module manufacturing apparatus 10 according to the present embodiment, the curved surface portion 30 </ b> B of the guide member 30 is the place closest to the peeling place P and immediately before peeling. The surface of the back sheet 28A is pressed. That is, the guide member 30 also functions as a sheet pressing unit that can more effectively suppress or prevent the sealing material 26 and the solar cell 24 from being lifted from the translucent substrate 22 than the sheet pressing unit 60. ing.

(Configuration of peeling angle adjusting means)
As shown in FIG. 4, the peeling angle adjusting means changes the relative position between the peeling means 40 and the guide member 30, and the peeling angle θ to the back sheet 28 </ b> B peeled off and raised from the surface of the sealing material 26. Is configured to adjust. The peeling angle adjusting means includes a guide member moving mechanism 32 connected to the guide member 30. The guide member moving mechanism 32 has a function of moving the guide member 30 in the arrow D direction that matches the peeling direction with respect to the peeling means 40. The peeling angle θ is adjusted within the range of 90 to 170 degrees by the peeling angle adjusting means.

(Configuration of moving means)
As shown in FIG. 3, the moving means 30 is arranged to face the outside of the base plate 12, and the guide member 30, the rotating shaft 44 of the peeling means 40, the rotating shaft 56 of the sealing material pressing means 50, and A pair of frame portions 72 that support the rotation shaft 66 of the sheet pressing means 60 are provided. A roller 74A rotatably supported by a rotating shaft 74B is provided at the front portion of the pair of frame portions 72 in the peeling direction, and a roller 76A rotatably supported by the rotating shaft 76B is provided at the rear portion of the peeling direction. Is provided. Each of the rollers 74A and 76A rotates in the peeling direction along the end of the base plate 12. That is, by this rotational movement, the moving means 70 is configured to move the guide member 30, the peeling means 40, the sealing material pressing means 50, and the sheet pressing means 60 in the same direction.

(Backsheet peeling operation)
In the solar cell module manufacturing apparatus 10 according to the present embodiment, the peeling operation of the back sheet 28 is as follows. First, as shown in FIGS. 1 to 3, the solar cell module 20 is placed on the placement surface 12 </ b> A of the base plate 12, with the translucent substrate 22 side facing downward and the backsheet 28 side facing upward. . The back sheet 28 at the rearmost end in the peeling direction of the solar cell module 20 is manually peeled off. One end of the peeled back sheet 28 </ b> B passes through the gap between the curved surface portion 30 </ b> B of the guide member 30 and the sealing material pressing portions 52 and 54 of the sealing material pressing means 50, and the periphery of the winding portion 44 of the peeling means 40. Bonded to the surface.

  When the handle 46 of the peeling means 40 is turned, the winding portion 42 is rotated in the direction of arrow C, and the back sheet 28B peeled off from the sealing material 26 moves in the direction of arrow B, and on the circumferential surface of the winding portion 42. It is wound up as a back sheet 28C. As the winding proceeds, the backsheet 28B is not loosened, and tension is generated in the backsheet 28B between the curved surface portion 30B of the guide member 30 and the winding portion 42. In this state, the moving means 70 rotates the winding portion 42 to move the winding portion 42 in the peeling direction while winding the back sheet 20B, and the guide member 30 moves in the arrow A direction that matches the peeling direction. Is done. At this time, the curved surface 30B of the guide member 30 does not bite into the back sheet 28B, and the back sheet 28B moves smoothly.

  On the other hand, when the back sheet 28 is peeled, the surface immediately before the back sheet 28A is peeled is pressed by the curved surface portion 30B and is pressed by the sheet pressing portions 62 and 64 of the sheet pressing means 60. Further, the surface 26 </ b> A of the sealing material 26 immediately after the back sheet 28 </ b> A is peeled is pressed by the sealing material pressing portions 52 and 54 of the sealing material pressing means 50.

  When the back sheet 28A at the foremost end in the peeling direction of the solar cell module 20 is all peeled off, the peeling process of the back sheet 28 is completed. Thereafter, when the defective solar battery cell 24 is replaced with a non-defective solar battery cell 24 and sealed with the sealing material 26, the back sheet 28 is newly bonded to the surface 26A of the sealing material 26. .

Hereinafter, a specific example of the present invention will be described with reference to the embodiment shown in FIG. The present invention is not limited to the following examples unless departing from the gist of the present invention.
(Example 1 to Example 7)
In the solar cell module manufacturing apparatus 10, the optimum value of the peeling angle θ of the back sheet 28 was demonstrated. In Examples 1 to 7, the distance between the peeling portion P and the curved surface portion 30B of the guide member 30 is substantially 0 (only the thickness of the back sheet 28), and the peeling portion P and the sealing material pressing portions 52 and 54 are used. The radius of curvature R of the curved surface portion 30B was set to 1.5 mm, and the heating temperature (peeling temperature) using the hot plate 14 was set to 150 degrees.

  In Example 1, the peel angle θ is 180 degrees, in Example 2, 170 degrees, in Example 3, 155 degrees, in Example 4, 140 degrees, in Example 5, 125 degrees, in Example 6, 110 degrees, and in Example 7. Each was set to 90 degrees. Regarding the tension generated by the winding portion 42 of the peeling means 40, the evaluation results are in four stages A to D. Result A can be easily peeled off. Result B can be peeled off. As for result C, peeling is difficult. Result D is very difficult or impossible to peel. In Examples 1 to 4, the result A was obtained. Examples 5 to 7 obtained the result B.

  Regarding the cracking of the solar battery cell 24, the evaluation results are three stages A to C. Result A is not broken. As for the result B, the translucent substrate 22 bends. Result C breaks. In Examples 1 to 7, the result A was obtained.

  Regarding the transition of the adhesive layer (sealing material easy-adhesive layer), there are two evaluation results. As for result A, the adhesive layer does not transfer. In result B, the adhesive layer is transferred. Example 2 to Example 7 gave result A, while Example 1 gave result B.

  Therefore, the peeling angle θ is set in the range of 90 ° to 170 °, more preferably in the range of 140 ° to 170 °, so that the peeling force of the back sheet 28 is reduced, and the solar cell 24 is cracked. And the transfer of the adhesive layer can be effectively suppressed or prevented.

(Examples 8 to 12)
In the solar cell module manufacturing apparatus 10, the optimum value of the distance from the peeled portion P to the sealing material pressing portions 52 and 54 of the sealing material pressing means 50 was demonstrated. The distance was set to 50 mm in Example 8, 20 mm in Example 9, 100 mm in Example 10, 200 mm in Example 11, and 300 mm in Example 12. As for the tension generated by the winding portion 42 of the peeling means 40, Example 8 to Example 12 obtained the result A. Regarding the cracking of the solar battery cell 24, Example 8 to Example 11 obtained the result A, but Example 12 was the result B. Examples 8 to 12 obtained the result A regarding the transfer of the adhesive layer. Therefore, the distance from the peeling part P to the sealing material pressing parts 52 and 54 is set to 200 mm or less, preferably 50 mm or less, so that the peeling force of the back sheet 28 is reduced and the cracking of the solar battery cell 24 is reduced. The transfer of the adhesive layer can be effectively suppressed or prevented.

(Example 13 to Example 18)
In the solar cell module manufacturing apparatus 10, the optimum value of the radius of curvature R of the curved surface portion 30B has been demonstrated. In Example 13, the radius of curvature R is 0.3 mm, in Example 14, 0.5 mm, in Example 15, 1.0 mm, in Example 16, 3.0 mm, in Example 17, 7.0 mm, and in Example 18. Each was set to 0 mm. Example 15 and Example 16 obtained the result A regarding the tension generated by the winding portion 42 of the peeling means 40. Example 14 and Example 17 obtained the result B. In Example 13 and Example 18, the result was C. Regarding the cracking of the solar battery cell 24, Example 13 to Example 17 obtained the result A, but Example 18 was the result B. Examples 13 to 18 obtained the result A regarding the transfer of the adhesive layer. Therefore, the curvature radius R of the curved surface portion 30B is set within the range of 0.5 mm to 7.0 mm, thereby reducing the peeling force of the back sheet 28 and reducing the cracking of the solar battery cell 24 and the transfer of the adhesive layer. It can be effectively suppressed or prevented.

(Example 19 to Example 25)
In the solar cell module manufacturing apparatus 10, the optimum value of the peeling temperature of the back sheet 28 was demonstrated. In Example 19, the peeling temperature was 70 degrees, in Example 20, 80 degrees, in Example 21, 90 degrees, in Example 22, 100 degrees, in Example 23, 150 degrees, in Example 24, 160 degrees, in Example 25, 170 degrees. Each was set in degrees. Regarding the tension generated by the winding portion 42 of the peeling means 40, Example 22 to Example 25 obtained the result A. Example 20 and Example 21 gave result B. In Example 19, the result was C. Regarding the cracking of the solar battery cell 24, Example 20 to Example 24 obtained the result A. Example 19 and Example 25 were the result C. Example 19 obtained result B for the transfer of the adhesive layer. In Examples 20 to 25, the result A was obtained. For this reason, the peeling temperature is set within the range of 80 to 160 degrees. In other words, since the softening point temperature of the sealing material 26 is about 80 degrees, the peeling temperature is set within a temperature range obtained by adding 80 degrees from the softening point temperature to the softening point temperature. When the softening point temperature is exceeded, the adhesive force between the sealing material 26 and the back sheet 28 is rapidly reduced. Moreover, when the upper limit of the said peeling temperature is exceeded, the adhesive force of the translucent board | substrate 22 and the sealing material 26 will fall. Therefore, by setting the peeling temperature, it is possible to effectively suppress or prevent cracking of the solar battery cell 24 and transfer of the adhesive layer while reducing the peeling force of the back sheet 28.

(Comparative Example 1 and Comparative Example 2)
The comparative example 1 is the evaluation result which peeled the back sheet from the sealing material using the peeling method and peeling apparatus disclosed by the said patent document 1. FIG. Comparative Example 1 obtained the result B regarding the tension. Regarding cracking, Comparative Example 1 was the result C, and Comparative Example 1 was the result B regarding the transfer of the adhesive layer.

  Comparative Example 2 is an evaluation result when the back sheet is forcibly separated from the sealing material by hand. In Comparative Example 2, the result was D for the tension, the result C for the crack, and the result B for the transfer of the adhesive layer.

(Operation and effect of the first embodiment)

  As described above, in the solar cell module manufacturing apparatus 10 according to the first embodiment, the solar cell module 20 is placed on the base plate 12, and the back sheet 28 is peeled from the sealing material 26 by the peeling means 40. . When the guide member 30 is moved in the moving direction together with the peeling means 40 by the moving means 70, the back sheet 28 is continuously peeled from the surface 26 </ b> A of the sealing material 26 over the curved surface portion 30 </ b> B of the guide member 30.

  Here, since the back sheet 28 is peeled off along the curved surface portion 30B of the guide member 30, the guide member 30 is not digged into the back sheet 28, and the slip of the peeled back sheet 28 on the curved surface portion 30B is eliminated. Becomes smooth. For this reason, the tension | tensile_strength (peeling force) required for peeling of the back seat | sheet 28 can be reduced. Further, the surface of the back sheet 28 immediately before peeling is pressed by the curved surface portion 30 </ b> B of the guide member 30. For this reason, since the floating of the sealing material 26 and the solar cell 24 from the translucent substrate 22 is suppressed in the vicinity of the peeled portion P between the sealing material 26 and the back sheet 28, The stress applied to the sealing material 26 and the solar battery cell 24 due to peeling can be reduced. Therefore, according to the solar cell module manufacturing apparatus 10, it is possible to effectively suppress or prevent cracking of the solar battery cells 24 and transfer of the adhesive layer while reducing the peeling force of the back sheet 28.

  Moreover, in the solar cell module manufacturing apparatus 10 according to the first embodiment, the surface 26A of the sealing material 26 immediately after the backsheet 28 is peeled is pressed by the sealing material pressing portions 52 and 54. The floating of the sealing material 26 and the solar battery cell 24 from the conductive substrate 22 is suppressed. For this reason, the stress added to the sealing material 26 and the photovoltaic cell 24 accompanying peeling of the back sheet 28 can be reduced.

  Furthermore, according to the solar cell module manufacturing apparatus 10 according to the first embodiment, the adhesive force between the translucent substrate 22 and the sealing material 26 of the solar cell module 20 is weaker at the end portion than at the intermediate portion. By pressing the surface 26A of the sealing material 26 by the sealing material pressing portions 52 and 54 in the region where the adhesive force is weak, the floating of the sealing material 26 and the solar battery cell 24 from the translucent substrate 22 is suppressed. ing. For this reason, the stress added to the sealing material 26 and the photovoltaic cell 24 accompanying peeling of the back sheet 28 can be reduced.

  Moreover, according to the solar cell module manufacturing apparatus 10 according to the first embodiment, the peeling unit 40 includes the winding unit 42, and the winding unit 42 is configured to wind the back sheet 28. The peeled back sheet 28B can be collected while being wound up. Moreover, the tension | tensile_strength required for peeling can be generated in the backsheet 28B.

  Furthermore, according to the solar cell module manufacturing apparatus 10 according to the first embodiment, since the peeling angle θ can be adjusted by the peeling angle adjusting means, the tension required for peeling the backsheet 28 is reduced. The possible peeling angle θ can be adjusted.

  Moreover, according to the manufacturing apparatus 10 of the solar cell module according to the first embodiment, the peeling angle adjusting means can be constructed with a simple configuration that moves the guide member 30 in the moving direction with respect to the peeling means 40. .

  Furthermore, according to the solar cell module manufacturing apparatus 10 according to the first embodiment, the guide member 30 can be constructed with a simple plate member.

  Moreover, according to the manufacturing apparatus 10 of the solar cell module according to the first embodiment, the curvature radius R of the curved surface portion 30B is set to 0.5 mm or more, so that the curved portion 30B bites into the back sheet 28. Since there is no longer any slip, the backsheet 28 slides smoothly on the curved surface portion 30B. On the other hand, since the curvature radius R of the curved surface portion 30B is set to 0.7 mm or less, an increase in the frictional force accompanying an increase in the contact area between the curved surface portion 30B and the back sheet 28 is reduced. The back sheet 28 slips smoothly. Therefore, by setting the curvature radius R within the above range, the tension applied to the back sheet 28 peeled from the sealing material 26 can be reduced.

  Furthermore, according to the solar cell module manufacturing apparatus 10 according to the first embodiment, since the peeling angle θ of the back sheet 28 is adjusted within the range of 90 degrees to 170 degrees, the peeling is performed from the sealing material 26. Further, the tension applied to the back sheet 28 can be reduced. If the sealing material easy-adhesion layer is provided on the back sheet 28 side and the back sheet 28 is adhered to the surface 26A of the sealing material 26 via the sealing material easy-adhesion layer, the back sheet 28 side It is possible to effectively suppress or prevent the transition of the sealing material easy-adhesion layer accompanying the peeling from the side to the sealing material 26 side.

  Moreover, according to the solar cell module manufacturing apparatus 10 according to the first embodiment, when the sealing material 26 is heated to the softening point temperature or higher by the hot plate 14, the adhesive force between the sealing material 26 and the back sheet 28 is increased. Therefore, the back sheet 28 is easily peeled off from the sealing material 26. On the other hand, the sealing material 26 is lifted from the translucent substrate 22 when the back sheet 28 is peeled off by adjusting the heating temperature of the sealing material 26 to be equal to or lower than the temperature obtained by adding 80 degrees to the softening point temperature. Alternatively, peeling can be effectively suppressed or prevented.

[Second Embodiment]
2nd Embodiment of this invention demonstrates the example which replaced the structure of the peeling angle adjustment means in the manufacturing apparatus 10 of the solar cell module which concerns on 1st Embodiment. As shown in FIG. 4 described above, in the solar cell module manufacturing apparatus 10 according to the second embodiment, the peeling angle adjusting means shows the peeling means 40 in the direction of arrow E with respect to the guide member 30. The peeling angle θ is adjusted by moving in the (moving direction). Further, the separation angle adjusting means adjusts the peeling angle θ by moving the peeling means 40 in the vertical direction indicated by the arrow F direction with respect to the guide member 30. A moving mechanism similar to the guide member moving mechanism 32 can be used to move the peeling means 40.

  According to the solar cell module manufacturing apparatus 10 according to the second embodiment, the peeling angle adjusting means can be constructed with a simple configuration that moves the peeling means 40 in the movement direction or the vertical direction with respect to the guide member 30. it can.

[Third Embodiment]
3rd Embodiment of this invention demonstrates the example which replaced the structure of the peeling angle adjustment means in the manufacturing apparatus 10 of the solar cell module which concerns on 1st Embodiment. As shown in FIG. 6, in the solar cell module manufacturing apparatus 10 according to the third embodiment, the peeling angle adjusting means is disposed between the guide member 30 and the peeling means 40 and peeled back sheet. An angle adjusting member 34 that contacts 28B, and an adjusting member moving mechanism 36 that moves the angle adjusting member 34 in the moving direction or the vertical direction are provided. The peeling angle θ can be adjusted by moving the angle adjusting member 34 by the adjusting member moving mechanism 36.

  According to the solar cell module manufacturing apparatus 10 according to the third embodiment, a simple configuration including the angle adjusting member 34 that contacts the back sheet 28 </ b> B and the adjusting member moving mechanism 36 that moves the angle adjusting member 34. Thus, a peeling angle adjusting means can be constructed.

(Other embodiments)
As mentioned above, although this invention was demonstrated using several embodiment and an Example, this invention is not limited to the said embodiment, A various change is possible in the range which does not deviate from the summary of this invention. . For example, the present invention provides a sealing material when the back sheet 28 is peeled off by forming in advance a few mm to several cm inward from the periphery of the back sheet 28 as a pre-stage step of the back sheet 28 peeling step. 26 can be made difficult to lift.

DESCRIPTION OF SYMBOLS 10 Solar cell module manufacturing apparatus 12 Base plate 14 Hot plate 20 Solar cell module 22 Translucent substrate 24 Solar cell 26 Sealing material 26A Surface 28, 28A, 28B, 28C Back sheet 30 Guide member 30B Curved portion 32 Guide member movement Mechanism 34 Angle adjusting member 36 Adjusting member moving mechanism 40 Peeling means 42 Winding part 50 Sealing material pressing means 52, 54 Sealing material pressing part 60 Sheet pressing means 62, 64 Sheet pressing part 70 Moving means 72 Frame part

Claims (12)

A solar battery module having a solar battery cell provided on one surface of a translucent substrate, a sealing material covering and sealing the solar battery cell, and a back sheet covering the sealing material is mounted. A base plate to be placed;
A peeling means provided above the base plate and moving relative to the base plate to peel the backsheet from the sealing material;
A guide member that has a curved surface portion that presses the surface of the backsheet, and peels the backsheet over the curved surface portion;
Moving means for moving the guide member in the moving direction of the peeling means;
An apparatus for manufacturing a solar cell module.   The manufacturing apparatus of the solar cell module according to claim 1, further comprising a sealing material pressing portion that presses a surface of the sealing material from which the back sheet is peeled and moves together with the guide member.   The said sealing material pressing part is a manufacturing apparatus of the solar cell module of Claim 1 or Claim 2 which hold | suppresses the edge part of the cross | intersection direction which cross | intersects the said moving direction of the surface of the said sealing material.   The said peeling means is a manufacturing apparatus of the solar cell module of any one of Claims 1-3 provided with the winding-up part which rotates and winds up the said peeled back sheet.   The peeling angle adjustment means which changes the relative position of the said peeling means and the said guide member, and adjusts the peeling angle to the said back sheet peeled and raised from the surface of the said sealing material was further provided. The manufacturing apparatus of the solar cell module of any one of Claim 4.   The said peeling angle adjustment means is a manufacturing apparatus of the solar cell module of Claim 5 which moves the said guide member to a moving direction with respect to the said peeling means, and adjusts a peeling angle.   The said peeling angle adjustment means is a manufacturing apparatus of the solar cell module of Claim 5 which moves the said peeling means to a moving direction or an up-down direction with respect to the said guide member, and adjusts a peeling angle. The peeling angle adjusting means is disposed between the guide member and the peeling means and contacts with the peeled back sheet, and an adjustment for moving the angle adjusting member in the moving direction or the vertical direction. A member moving mechanism,
The solar cell module manufacturing apparatus according to claim 5, wherein the peeling angle is adjusted by moving the angle adjusting member by the adjusting member moving mechanism.   The said guide member is a plate body which hold | suppresses the whole width | variety of the said back seat | sheet, The manufacturing apparatus of the solar cell module of any one of Claims 1-8.   The manufacturing apparatus of the solar cell module according to any one of claims 1 to 9, wherein a radius of curvature of the curved surface portion is set within a range of 0.5 mm to 7.0 mm.   The said peeling angle adjustment means is a manufacturing apparatus of the solar cell module of any one of Claims 1-10 which adjusts the said peeling angle in the range of 90 to 170 degree | times.   A hot plate is provided on the base plate, and the hot plate heats the temperature of the sealing material from a softening point temperature to a temperature in which 80 degrees is added to the softening point temperature. The manufacturing apparatus of the solar cell module of any one of these.

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