KR20120059368A - Conductive film adhering apparatus, assembling apparatus for connecting crystal system solar cell module, and method for connecting crystal system solar cell - Google Patents

Abstract

PURPOSE: A conductivity film attachment apparatus, a crystalline system solar battery module assembling device, and a connecting method of a crystalline system solar cell are provided to shorten connection time of a conductivity film and the crystalline system solar cell. CONSTITUTION: A cutting unit has a cutter blade(138b). The cutter blade cuts a conductive film(3) into a lot of pieces. A film attachment unit has a conductive film attachment head(133). The conductive film attachment head is composed of a plurality of rod type heads. The plurality of rod type heads breaks a lateral direction of a crystalline system solar cell. The conductive film attachment head attaches the conductive film which is cut by cutter blade to the lateral direction of the crystalline system solar cell. An exfoliation unit comes off release paper from the conductive film.

Description

Device for attaching conductive film, device for assembling crystalline solar cell module, and method for connecting crystalline solar cell

The present invention relates to a conductive film attachment device, a solar cell module assembly device, and a device for attaching a wiring member to a surface of a substrate of a crystalline solar cell, such as a single crystal solar cell or a polycrystal solar cell. A method of connecting a crystalline solar cell.

In the crystalline solar cell module assembling step, after forming a crystalline cell substrate (hereinafter simply abbreviated as "cell") of a crystalline solar cell such as a monocrystalline solar cell or a polycrystalline solar cell and connecting it with a wiring member to form a series of solar cell circuits, It is an assembling and mounting process which seals with a protective sheet, etc., and mounts an external terminal.

Soldering is conventionally used widely as a method of connecting a wiring member to a cell during this assembly mounting process. Leaded solder is a good conductor and has a consistent strength and environmental reliability, and has a track record of 20 years. However, in consideration of recent environmental protection, the use of Pb-free solder has been considered, but the degradation of reliability in the case of using lead-free solder has become a problem.

Therefore, the method which aimed at the avoidance of the reliability fall by a thermal expansion difference is known by connecting a wiring and a cell using a conductive film or an anisotropic conductive film (ACF) (refer patent document 1 below).

On the other hand, since the anisotropic conductive film is expensive, the amount of the anisotropic conductive film is not connected to the entire region of the thin-film solar cell wiring length having a low current density, but the amount of the anisotropic conductive film is provided by the method of attaching the anisotropic conductive film to each part of the wiring. Is also proposed (see Patent Document 2).

Japanese Patent Application Publication No. 2008-300403 WO2008 / 152865 pamphlet

However, in the crystalline solar cell, since the current density is high, the resistance loss due to the current in the inward direction cannot be ignored, and in the case where the conductive film or the anisotropic conductive film is saved and reattached, the individual attachment lengths are shortened. By increasing the number of attachments, it was necessary to shorten the path of the current in the inward direction.

In addition, in the crystalline solar cell, it is necessary to connect the surface and the back surface of dozens of cells. In the conventional deposition method, the total time required for the individual attachment is enormous, and thus there is a drawback in that the connection time is longer than that of the solder. Therefore, it is difficult to adopt a structure in which the production tact is increased to lower the production efficiency and, in reality, "connecting the surface and the back surface of dozens of cells."

An object of the present invention, when connecting a plurality of electric wires and crystalline solar cells coupled to the crystalline solar cell by a conductive film, by connecting the solar cell and the conductive film by reorganization, dozens of crystalline solar cells The present invention provides a device for attaching a conductive film, a solar cell module assembly device, and a crystalline solar cell, which can significantly shorten the connection time between a cell and a plurality of electric wires.

In order to solve the said subject and to achieve the objective of this invention, the apparatus with a conductive film of this invention is connected to a solar cell or an electric wire in order to string-connect a some crystalline solar cell with a some electric wire. It is an apparatus with an electroconductive film which attaches an electroconductive film. This electroconductive film attachment apparatus is a cutting unit which has a cutter blade which cuts several pieces of linear conductive films of predetermined width | variety which the adhesive piece and peeling paper overlapped, and the said cutter blade It is provided with the film attachment unit which has a conductive film attachment head which arranges and cuts the some electrically conductive film in the width direction of a crystalline solar cell at approximately equal intervals, and the peeling unit which peels a release paper from a conductive film. It features. The width direction of a crystalline solar cell is a direction orthogonal to a conveyance direction of a cell, ie, a direction orthogonal to an electric wire.

Moreover, the assembling apparatus of the solar cell module of this invention is equipped with the said electroconductive film attachment apparatus, It is characterized by including the main crimping unit which crimps | bonds a crystalline solar cell and a some electric wire through an adhesive piece. . The solar cell with the conductive film from which the release paper is removed is combined with a plurality of electric wires at a front end of the main crimping unit for crimping the crystalline solar cell and the plurality of electric wires to pre-heat and pressurize it. It is more preferable to provide a pressurization unit for attaching.

Moreover, the connection method which connects a crystalline solar cell and a some electric wire connects a solar cell and a some electric wire used for the crystalline solar cell module assembly apparatus which connects between a crystalline solar cell by a some electric wire. As a connection method, The cutting process of cutting | disconnecting the electroconductive film which consists of an adhesive piece and a release paper into several pieces; A film adhesion step of attaching a plurality of conductive films cut in the cutting step to a plurality of predefined locations on the front and back surfaces of the crystalline solar cell; A peeling step of peeling off the release paper from the conductive film attached to the crystalline solar cell; The main compression process which crimps | bonds the electric wire which connects between a crystalline solar cell and a crystalline solar cell through a pressure sensitive adhesive piece is included. And as a whole process of the crimping | compression-bonding process in this crimping | compression-bonding process, it is preferable to provide the pressure bonding process which combines the solar cell with a conductive film from which release paper was removed, and a some electric wire, and preheats and press-bonds. .

According to the connection method of the electroconductive film attachment device, the crystalline solar cell module assembly apparatus, and the crystalline solar cell of this invention, the tact at the time of sticking the electroconductive film with respect to a crystalline solar cell can be shortened significantly.

1 is a plan view showing the overall configuration of an apparatus for assembling a crystalline solar cell module according to a first embodiment of the present invention.
2 is an elevation view for explaining a step of attaching a conductive film to a cell in the crystalline solar cell module assembling apparatus of the first embodiment of the present invention.
3 is an elevation view for explaining a step of connecting a cell and an electric wire of the crystalline solar cell module assembling apparatus according to the first embodiment of the present invention.
4 is a perspective view for explaining a method of attaching a conductive film to a cell of a first embodiment of the present invention.
FIG. 5 is a diagram when cutting a batch before attaching a conductive film to a cell in the first embodiment of the present invention. FIG.
FIG. 6 is a view when the gap between the conductive films is extended to the full width of the cell in the first embodiment of the present invention and bonded to the specified position on the front and back surfaces of the cell.
7 is a perspective view showing a second embodiment as a modification of the method for attaching the conductive film of the first embodiment of the present invention.
8 is a perspective view showing an example of the structure of a solar cell string used for assembling the solar cell module of the present invention.

Hereinafter, although the first embodiment of the present invention (hereinafter referred to as "the present example") will be described with reference to FIGS. 1 to 6, for clarity, a representative crystalline solar cell (hereinafter, simply referred to as "cell") will be described. The structure of the cell string 4 will be described with reference to FIG. As shown in FIG. 8, the cell 1 of each solar cell has an electrode pattern on the surface and the back, and the electric wire 2 is formed on the surface and the back of each cell in the cell 1 of each solar cell. Four are attached. The attachment of the four electric wires to the surface and the back surface of each cell 1 is performed by attaching an electroconductive film (not shown) to several places (for example, six places) of each electric wire 2. In this way, the cell string 4 in which each cell 1 is connected by the electric wire 2 is assumed to be formed by connecting ten cells 1, for example.

In the description of FIG. 8, the four strings are used to connect the cells 1 to assemble the cell strings 4, but the number of the cells 1, the number of the wires 2, and the conductive film are described. The number and length are matters to be determined by the design of the solar cell module, and it is possible to freely change the number of wires 2 and change the connection points separately from the front and back surfaces.

1 is a plan view showing the overall configuration of a crystalline solar cell module assembly device 100 of the present example.

In the crystalline solar cell module assembling apparatus 100 of the present example, the wire supply unit 101, the wire straightening unit 102, and the wire cutting unit 104 are arranged in order from the left side of the lower end of FIG. 1. have. In addition, the upper part of FIG. 1 is a unit which performs the process for attaching a sticky conductive film to the cell 1 collectively, The cell supply unit 105, the unit with a conductive film 103, The separator peeling unit 106 for removing a separator (paper peeling) from an electroconductive film is arrange | positioned (it mentions later in FIG. 2). In particular, the conductive film attachment unit 103 and the separator peeling unit 106 are technical backbones for carrying out the present example, and the cells 1 are connected to the electric wires 2 cut by the electric wire cutting units 104 described later. It is a unit that plays an important role in attaching the.

In addition, on the right side (rear) of the lower end of FIG. 1, the preheating and pressing unit 107 for coalescing and preheating the cell 1 and the electric wire 2, and the bone for pressing the cell 1 and the electric wire 2. The compression unit 108 and the cooling unit 109 for cooling the main cell 1 are arranged. In addition, a transfer-mounting device 110 is provided for taking out the solar cell strings connected in the chain and leading to the next step 120.

In the crystalline solar cell module assembling apparatus 100 of the present example configured as described above, first, an electric wire (not shown) is supplied from the electric wire supply unit 101, and the nonuniformity generated during electric wire transportation by the electric wire straightening unit 102 is determined. It is corrected. That is, since the flat electric wire sent from the electric wire supply unit 101 is wound by the reel which is not shown, for example, the restoring force which curves to the electric wire itself acts. Therefore, the wire straightening unit 102 is provided with a mechanism for forcibly eliminating the wound state generated in the flat wire against the restoring force.

In Fig. 1, the specific configuration of the wire straightening unit 102 is not shown, but, for example, a dancer roller is disposed between the two feed rollers supplied to resist the curvature of the wire, so that it is suitable for the wire. It is effective to impart tension. That is, the wire straightening unit 102 corrects the wound state generated in the reel (not shown) while maintaining this tension. And the electric wire which the state wound up by the electric wire straightening unit 102 was calibrated is sent to the electric wire cutting unit 104, and cuts into the length of integer multiple of the length of a cell (here, about 2 times) here. In the electric wire cutting unit 104, the electric wire is drawn inside the electric wire cutting unit 104, and the front end of the electric wire drawn in is received by the chuck 142 (see FIG. 3). The electric wire is cut | disconnected from up and down by the not cutting blade.

On the other hand, the cell 1 (refer FIG. 8) of a crystalline solar cell is supplied from the cell supply unit 105 in the state laminated | stacked on the tray, and in the unit 103 with a conductive film, of the supplied cell 1 Small pieces of the conductive film cut into a plurality of pieces (hereinafter, also referred to as " conductive films " including these small pieces) are collectively attached to a predetermined point (described in detail in FIGS. 4 and 5). This electroconductive film is affixed on the cell 1 in the state in which the adhesion piece and the separator (peeling) adhered. Then, the cell 1 with this conductive film is sent to the separator peeling unit 106, and in this separator peeling unit 106, it is a separator (dripping) from the conductive film attached to the cell 1 Only peel off.

The cell 1 from which the separator of the conductive film was removed is sent to the preheating and pressing unit 107 in that state. In the preheating and pressing unit 107, the cells 1 sent from the separator peeling unit 106 and the wires 2 cut by the wire cutting unit 104 are coalesced to preheat and pressurize. Thereafter, in the main compression unit 108, the wires 2 and the cells 1 are thermally compressed in a state where they are integrated, and are sequentially drawn out to the cooling unit 109 as a string of strings. It is then guided to the next step 120 by the transfer mounting apparatus 110.

FIG. 2 shows the cell supply unit 105, the conductive film attaching unit 103, and the separator peeling unit 106 disposed in the upper end of the crystalline solar cell module assembly apparatus 100 of the present invention in more detail. to be.

As shown in FIG. 2, the cell supply unit 105 includes a cell tray 151 in which a plurality of cells 1 are stacked, an elevator 152, an adsorption head 153, and a transfer mounting mechanism 154. Equipped.

In this cell supply unit 105, the cell tray 151 is held by the elevator 152 so that the height of the surface of the cell 1 of the uppermost surface becomes constant. That is, the uppermost cell 1 is adsorbed by the adsorption head 153 and is conveyed to the conductive film attachment unit 103 one by one by the transfer mounting mechanism 154, but the uppermost cell 1 is conveyed. When carried by the mounting mechanism 154, the elevator 152 raises and it is controlled so that the height of the surface of the cell 1 of the uppermost surface will always be constant.

The conductive film attaching unit 103 is a unit for attaching the conductive film 3 to a prescribed position on the cell 1, and a feeding roller 131 for sending the tape-shaped conductive film 3, and a cell ( A conductive film attachment head 133 for attaching the conductive film to 1) and a drive mechanism 134 for moving the conductive film attachment head 133 up and down. Although these specific operation | movement is mentioned later according to FIGS. 4-6, in the unit 103 with an electroconductive film, the electroconductive film 3 adhering to the cell 1 is the adhesive piece 3b (refer FIG. 4). Since the separator (release) 3a is in the state, it is necessary to remove the separator 3a from the conductive film 3 before the cell 1 and the electric wire 2 are main-bonded.

Therefore, the cell 1 with the conductive film 3 is sent to the separator peeling unit 106. The separator peeling unit 106 includes an adhesive tape 162 for removing the separator portion of the conductive film 3 attached to the surface and the back surface of the cell 1 and a delivery roller for sending the adhesive tape 162 ( 161, the vacuum suction head 163 which vacuum-adsorbs the adhesive tape 162, and the drive mechanism 164 for moving the vacuum suction head 163 up and down are provided.

The adhesive tape 162 used here depends on the design idea of a solar cell, for example, if there are four electric wires 2 attached to the surface or the back of one cell 1, Four adhesive tapes 162 may be provided depending on the number of hot water. This adhesive tape 162 is used in order to separate the adhesive piece 3b and the separator 3a of the electroconductive film 3, and the width | variety is an adhesive tape like the width of the electroconductive film 3, and is normal silicone An adhesive tape of (artificial polymer of siloxane skeleton) is used.

If the adhesion interval of the separator 3a of the conductive film 3 is 20 mm, and the length of the separator 3a is 4 mm, the separator can be peeled five times with one feed of the adhesive tape 162. Do. That is, the adhesive tape 162 is newly crossed by the length of 20 mm added to the length of the cell 1, and the adhesive tape 162 is pushed to touch the part where the separator 3a is present to peel the separator 3a. This is moved to the adhesive tape 162 and the 1st cell 1 is processed. And when processing the next cell 1, the adhesive tape 162 is sent out by 4 mm which is the length of the separator 3a, and the peeling process of the separator 3a is performed. When this is repeated until the fifth cell 1 is processed, the separator 3a adheres to the entire surface of the adhesive tape 162 that is drawn out, and the adhesive surface is not visible.

Thereafter, before the sixth cell 1 is processed, if the adhesive tape 162 is fed out by the feeding roller 161 by the length added to the length of the cell 1 by 20 mm, a new adhesive tape 162 is provided. Separation of a separator can be performed using. At this time, since the electric wire 2 is generally narrow to 2 mm or less in width, since the width | variety of the electroconductive film 3 is also narrow so that it may fit here, and the adhesive tape 162 will also become narrow width similarly, it is 20 mm in length of the cell 1 If it crosses by the length added, for example, 176 mm, there exists a possibility that the soft adhesive tape 162 may meander.

Therefore, when the length of the adhesive piece 3b is wider than the width | variety, the method of crossing the adhesive tape 162 in the direction orthogonal to the electric wire 2 can also be used. In this case, the adhesive tape 162 uses seven adhesive tapes 162 when the number of adhesive pieces 3b on one electric wire 2 is seven, for example. In this arrangement, the width of the adhesive tape 162 can be 4 mm, which is the length of the separator 3a, and the number of the adhesive tapes 162 increases, but the possibility of meandering can be reduced. In this case, for example, in a design in which four wires 2mm in width are arranged at equal intervals in the cells 1 having a width of 156 mm × height 156 mm, the distance between the wires 2 is 39 mm pitch. The 195 mm total adhesive tape 162 is taken out with one feed. Then, the peeling treatment is performed while consuming 2 mm, and when the peeling treatment of the 19th cell 1 is completed, the entire entire surface of the adhesive tape 162 for one time is consumed.

Peeling of the separator 3a of the electroconductive film 3 by the adhesive tape 162 mentioned above is performed in the following procedures. First, the adhesive tape 162 is pressed against the conductive film 3 arrange | positioned on the cell 1 by the vacuum suction head 163 moved up and down by the drive mechanism 164 once. And after pressurizing the adhesive tape 162 and the conductive film 3 with this vacuum suction head 163, the vacuum suction head 163 is spaced apart from the conductive film 3 of the cell 1. As shown in FIG. As a result, only the separator portion of the conductive film 3 is attached to the adhesive tape 162, and the separator 3a is removed from the conductive film 3, so that the adhesive piece 3b of the conductive film 3 is formed on the cell 1. ) Is left. Thus, the separator 3a can be removed from the conductive film 3 attached to the cell 1, without a person touching the conductive film 3 at all.

Next, based on FIG. 3, the process of connecting the electric wire 2 to the some cell 1 with which the electroconductive film 3 was attached is demonstrated.

The electric wire 2 cut into the length of about two cells by the cutting blade which is not shown of the electric wire cutting unit 104 is preheated in the state integrated with the cell 1 by the preheating and pressing unit 107, It is pressed. In the preheating and pressing unit 107 shown in FIG. 3, the two cells are preheated at the same time, but the number of the cells is not limited to two. Depending on the length of the line, it can also be configured to preheat three or more cells simultaneously, depending on the user's design specifications.

As shown in FIG. 3, in this preheating and pressing unit 107, the tip of the electric wire 2 is mounted on the cell 1 pressurized in a previous time, and the preheating heater 172 is incorporated therein. The belt conveyor 171 is drawn to the right side of the preheating and pressing unit 107. Thereafter, the new cell 1 mounted and transported from the separator peeling unit 106 (see FIG. 2) is mounted on the second half of the electric wire 2. In this state, the electroconductive film 3 attached to the cell 1 is preheated by the preheating heater 172, and adhesiveness increases, and it is pressurized by the press head 173. FIG. Thereby, the electric wire 2 is attached to the cell 1, and the cell 1 is connected in string form.

The two cells connected on the string in the wires 2 by the pre-heating and the pressing in the pressing unit 107 are then sent to the main pressing unit 108. In the main crimping unit 108, a cell string 4 (see FIG. 8) consisting of two cells 1 and an electric wire 2 is heated by a heating stage 181 and a pressurized heating head 185. It is pressurized, heating up to hardening temperature. The pressurized heating head 185 is controlled to be lifted and lowered by the pressurizing mechanism 187. Since the electroconductive film 3 is thermoset by this heat processing and pressurization process, the stable electrically conductive state of the cell 1 and the electric wire 2 can be obtained.

In addition, in this main compression unit 108, as shown by the arrow of FIG. 3, the two cells 1 are pressed by the heating stage 181 and the pressurization heating head 185, and the right dotted line Carried to position. Then, when the cell 1 comes to the right dotted line position, the heating stage 181 and the pressurized heating head 185 are separated from the cell 1, and are returned to the position indicated by the solid line on the left side and the next two cells ( 1) are placed above and below.

The electric wire 2 and the cell 1 which were main-compressed by the main compression unit 108 are conveyed to the cooling unit 109 which has the conveyor 191 in which the slow cooling heater 192 was built. In this cooling unit 109, the cell string 4 composed of the cell 1 and the electric wire 2 is naturally cooled until the specified number of cells 1 are connected, and the transfer mounting apparatus Adsorption by the adsorption head 111 of 110 is carried out. Then, it is carried out by the transfer mounting mechanism 112 and sent to the next process 120 shown in FIG.

Next, the attaching method of the electroconductive film 3 to the cell 1 in the electroconductive film attachment unit 103 which is a central part of this example is demonstrated according to FIG.

4 is a perspective view for explaining a method of attaching the conductive film 3 to the cell 1, and shows a member around the head 133 with a conductive film.

That is, as shown in Fig. 4A, the conductive film 3 is conveyed by the feeding roller 131 by a predetermined length and inserted between the eight cutter blades 138b and the cutting board 138a. . The cutting mechanism 138a is lowered by the drive mechanism not shown in this step, and the conductive film 3 is brought into the half cut state by the cutter blade 138b.

Here, in the half-cut state, only the adhesive piece 3b of the electroconductive film 3 is cut | disconnected by sandwiching the electroconductive film 3 between the cutter blade 138b and the cutting board 138a, and the separator (peel) 3a ) Is left (see FIG. 5). And since the unevenness | corrugation is formed in the board | substrate 138a which the cutter blade 138b touches, as shown in FIG. 5, it is formed in the shape of a perforation line in the conductive film 3, and it is full cut here and there )

Thereafter, as shown in Fig. 4B, the cutting board 138a is retracted upward, and the conductive film 3 in the half-cut state is held with the cutter blade 138b, and the head with the conductive film is thereon. Transfer to the bottom of (133). And the head 133 with a conductive film is lowered by the drive mechanism which is not shown in figure on the conductive film 3 in which half cut and full cut are mixed, and the head with a conductive film 133 and a cutter blade are shown in FIG. By 138b, the conductive film 3 is divided into eight small pieces. The operation of this division will be described in detail with reference to FIG. 5.

FIG. 5: is a figure which showed the state which cut | disconnects the electroconductive film 3 of this example with the cutter blade 138b.

In FIG. 5, the example which attaches the conductive film 3 to the surface and the back surface of the cell 1 is shown, and the conductive film 3, the cutter blade 138b, the head 133 with a conductive film, and the conductive film are attached Two drive mechanisms 134 (hereinafter, simply referred to as "drive mechanisms 134") of the head 133 are shown. In this step of FIG. 5, the cell 1 (see FIG. 6) has not yet been inserted between the head 133 with the conductive film disposed above and below.

The drive mechanism 134 includes a slide moving member 134a connected to each of the eight attachment heads 133 formed in an elongated rod shape, and a guide rail for guiding the slide moving member 134a in the horizontal axis direction. It consists of 134b, the drive member 134c which moves the slide movement member 134a along a guide rail, and the guide member 134d which guides the drive member 134c.

In addition, the cutter blade 138b is being fixed to the pedestal 138d, and the eight cutter blades 138b are similarly moved because the pedestal 138d moves up and down by the lifting mechanism 138c. It inserts between each head of the head 133 with eight conductive films provided, and the cutting | disconnection of the conductive film 3 is performed. In FIG. 5, a cam that rotates is used as the elevating mechanism 138c for elevating and cutting the cutter blade 138b. In addition to the cam, a means capable of giving the elevating motion to the pedestal 138d by a cylinder mechanism or the like can be used. Hereinafter, the lifting mechanism 138c will be described as the cam mechanism 138c.

And the head 133 with a conductive film is provided with the vacuum adsorption hole which is not shown in the front-end | tip part, and it is comprised so that each piece of the cut | disconnected conductive film 3 can be adsorbed by attracting air from this vacuum adsorption hole. It is.

Next, the operation | movement of the conductive film attachment unit 103 is demonstrated according to FIG. 5 and FIG. First, as shown in FIG. 5, the notch is formed in the conductive film 3 in the half-cut state of the cutter blade 138b, and the head 133 with a conductive film descends in this state, and is mentioned above. By the suction from one vacuum suction hole, the separator (peel) 3a of the conductive film is attracted to the eight head ends.

And the cam mechanism 138c is rotated, the base 138d is pushed in the upper and / or lower conductive film attachment head 133, and the electrically conductive film 3 which was in the half cut state is cut | disconnected completely. In FIG. 5, the upper conductive film 3 is in a cut state, but the lower conductive film 3 is in a half cut state. As described above, the cutting of the conductive film 3 by the cutter blade 138b may be performed separately up and down, that is, at different times, but is usually arranged up and down by one rotation of the cam mechanism 138c. It is preferable to cut | disconnect the conductive film 3 simultaneously.

Next, according to FIG. 6, the operation | movement until the cut | disconnected conductive film 3 adheres to the cell 1 is demonstrated. As shown in FIG. 6, each of the eight conductive film attachment heads 133 has the entire width of the cell 1 by the cooperative operation of the drive member 134c and the slide movement member 134a of the drive mechanism 134. It spreads substantially uniformly over.

As described above, a vacuum suction hole (not shown) is formed in the tip end of each of the eight conductive film attachment heads 133, and the separator 3a of the conductive film 3 is formed by the suction force from the vacuum suction hole. Aspirated. In this state, the drive mechanism 134 is raised and lowered, and the head 133 with the conductive film presses the cell 1, so that the pressure-sensitive adhesive 3b of the conductive film 3 causes the surface and the back of the cell 1 to be removed. The conductive film 3 is attached to the prescribed position. The prescribed position on the cell 1 to which the conductive film 3 is attached is a position at which the electric wire 2 is inserted in the post-processing unit.

And after adhering the adhesive piece 3b of the electroconductive film 3 to the defined position of the cell 1, the suction from the vacuum suction hole of the eight electroconductive film attachment heads 133 is stopped, and the drive mechanism 134 is carried out. When the eight conductive film attachment heads 133 are spaced apart from the cell 1, the attachment of the conductive film 3 to the cell 1 is completed in the state where the separator 3a is attached.

At this time, the cutter blade 138b attached to the pedestal 138d is evacuated to the position of the cutting board 138a together with the cam mechanism 138c, and the next cutting edge between the cutting board 138a and the cutter blade 138b. The conductive film 3 is inserted.

In this way, when the attachment of the conductive film 3 to the cell 1 is completed, the cell 1 is sent to the separator peeling unit 106 (see FIG. 3), and the separator 3a of the conductive film 3 is provided. ) Is peeled off. The peeling process of the separator 3a by this separator peeling unit 106 is already explained in full detail previously.

Next, as a 2nd Example of this invention, the modified example (henceforth "modification example") of the conductive film attachment unit 103 is demonstrated according to FIG. This modification differs from that shown in FIG. 4 in that the conductive film provisional member 138e for temporarily holding the conductive film 3 as shown in FIG. 7 is provided. This electroconductive film provisional member 138e is comprised so that eight members formed in the rod shape can move to the perpendicular | vertical direction with respect to the longitudinal direction. Although eight members are shown in FIG. 7, this number is arbitrarily set by design.

Further, another difference is that instead of the eight rod-shaped conductive film attachment heads 133 shown in FIG. 4, the flat conductive film attachment head 133A that reaches the entire width of the cell 1 is provided. Since the positional relationship of the cutter blade 138b and the cutting board 138a is the same as the example shown in FIG. 4, it is only a brief description here.

The attachment operation of the conductive film 3 to the head 133A with the conductive film in the modification shown in FIG. 7 will be described.

First, the conductive film 3 is sandwiched between the eight cutter blades 138b and the cutting board 138a, and the cutter blade 138b and the conductive film 3 are cut in the half cut state. Subsequently, the conductive film 3 in a half cut state is transferred to the lower side of the head 133A with the conductive film together with the cutter blade 138b, and the conductive film attachment head 133A is pressed strongly against the cutter blade 138b here. The separator 3a of the conductive film 3 is cut off.

As for the head 133A with an electroconductive film, the hole which can vacuum-suck inside is drilled like the eight heads of the head 133 with the electroconductive film shown in FIG. And the separator 3a of the conductive film 3 cut | disconnected by this vacuum suction is attracted by the head 133A with a conductive film, and the conductive film 3 is removed from the cutter blade 138b. The cutter blade 138b from which the conductive film 3 has been removed is returned to the position where the conductive film 3 is half-cut together with the pedestal 138d (see FIG. 5), and then the conductive film that is half-cut ( 3) is inserted between the cutter blade 138b and the cutting board 138a.

And after the cutter blade 138b retreats, the head 133A with an electroconductive film descends and is temporarily installed on the electroconductive film provisional member 138e. The temporary conductive film 3 is formed in a state in which the adhesive layer 3b and the separator 3a are integrated. In the conductive film provisional member 138e, a hole for vacuum adsorption is formed, and the conductive film 3 adsorbed to the head 133A with the conductive film by this vacuum suction is a conductive film provisional member ( 138e). In the conductive film provisional member 138e, since strong suction such as the adhesion piece 3b of the conductive film 3 is adhered is not performed, the conductive film 3 is easily removed from the conductive film provisional member 138e. It is sufficient if the suction is relatively weak enough to be peeled off.

As shown in FIG.7 (b), the conductive film provisional member 138e with which the conductive film 3 (including the adhesion layer 3b and the separator 3a) was provided, the cell in a post-processing process Depending on the position of the electric wire 2 connected to (1), it can widen by a prescribed space | interval. Then, in a state where the conductive film provisional member 138e is widened, this time, the flat type conductive film head 133A is lowered again, and the conductive film 3 is removed from the conductive film provisional member 138e. Receive Receipt of this electroconductive film is also performed by the on / off control of vacuum suction similarly.

And the conductive film 3 vacuum-adsorbed by the head 133A with a conductive film is press-bonded to the prescribed position of the cell 1 by the method similar to the 1st Example demonstrated by FIG. It is sent to the separator separator unit 106 (refer FIG. 2).

As described above, unlike the conductive film-attached head 133 shown in FIGS. 4 to 6, the conductive head 133A of the modification shown in FIG. 7 is not formed of a plurality of rod-shaped heads, and thus is a rod-shaped head. You don't have to have the precision you need in between. Therefore, the structure of the head 133A with a conductive film and its control can be simplified. However, since the conductive film provisional member 138e is needed by this, this example (method of FIG. 4) and the modification (method of FIG. 7) become a trade off relationship, and the device user It depends on the choice.

In addition, although the width | variety of the electroconductive film 3 is described as being substantially the same as the width | variety of the electric wire 2 in both the 1st Example shown in FIG. 4 of this invention, and the 2nd Example modified example shown in FIG. 7, With the main compression of the cell 1 and the electric wire 2 in the crimping unit 108, since each adhesive piece 3b of the electroconductive film 3 is pressed and unfolded flat, It is preferable to use a film whose width is as narrow as this enlargement equivalent. Thereby, the use area of the conductive film 3 can be saved.

As mentioned above, although the example which used the conductive film provisional member as a modified example of this invention was demonstrated, the Example demonstrated here (this example, FIG. 4-FIG. 6) and its modified example (refer FIG. 7), It is an embodiment to the last.

The present invention is not limited to the above-described embodiments, and various modifications and applications can of course be included, without departing from the technical scope described in the claims.

1: cell 2: wires
3: Conductive Film 3a: Separator (Release)
3b: adhesive piece 4: cell string
100: crystalline solar cell module assembly device
101: wire supply unit 102: wire correction unit
103: unit with conductive film 104: electric wire cutting unit
105: cell supply unit 106: separator peeling unit
107: preheating and pressing unit 108: main pressing unit
109: cooling unit 110: transfer mounting device
120: next step 131: feeding roller
133, 133A: Head with conductive film
134: drive mechanism of head with conductive film
138b: cutter blade (cutting edge of conductive film)
138a: cutting board 138c: lifting mechanism (cam mechanism)
138e: conductive film provisional member 161: adhesive film delivery roller
162: adhesive film (for separator peeling) 163: vacuum adsorption head
164: drive mechanism of the vacuum suction head

Claims (8)

An apparatus for attaching a conductive film to the solar cell or the wire in order to connect a plurality of crystalline solar cells with a plurality of wires,
A cutting unit having a cutter blade for cutting a plurality of linear conductive films having a predetermined width formed by overlapping an adhesive piece and a release paper;
A film attachment unit having a conductive film attachment head for attaching and attaching the plurality of conductive films cut by the cutter blade at approximately equal intervals in the width direction of the crystalline solar cell; And
Peeling unit for peeling off the release paper from the conductive film
Conductive film attachment device comprising a. The method of claim 1,
The head with the conductive film is composed of a plurality of rod-shaped heads,
The said rod-shaped head is a device with an electroconductive film which spreads at substantially equal intervals in the width direction of the said solar cell, in the state which attracted the said electroconductive film cut | disconnected at the front-end | tip. The method of claim 1,
The head with conductive film has a length substantially equal to the length of the crystalline solar cell, and the tip of the head with conductive film is formed planarly in the width direction of the crystalline solar cell, and the head with conductive film. A suction part is provided at the tip of the electrode, and the conductive film is sucked from the member on which the conductive film cut by the cutting unit is temporarily placed, and attached to the front surface and the rear surface of the crystalline solar cell. Device. The method of claim 3,
The member on which the conductive film is temporarily placed is composed of a plurality of rod-shaped members having a width substantially equal to that of an electric wire, and the plurality of rod-shaped members are arranged at substantially equal intervals in the width direction of the crystalline solar cell. After the opening, the conductive film is attached to the tip of the head with a conductive film, the conductive film attachment device. As an assembling apparatus of a crystalline solar cell used for the assembly process of the crystalline solar cell module which string-connects a some crystalline solar cell with the some wire,
A cutting unit having a cutter blade for cutting a plurality of linear conductive films having a predetermined width, the adhesive pieces and the release papers overlapped;
A film attachment unit having a conductive film attachment head for attaching and attaching the plurality of conductive films cut by the cutter blade at approximately equal intervals in the width direction of the crystalline solar cell;
A peeling unit that peels the release paper from the conductive film attached to the crystalline solar cell; And
The main crimping unit for crimping the crystalline solar cell and the plurality of electric wires with the conductive film interposed therebetween through the adhesive piece.
Crystalline solar cell module assembly comprising a. The method of claim 5,
And a pressurizing unit configured to pre-heat and press-fit the electric wires into the solar cell with the conductive film from which the release paper is removed. As a connection method which connects the said crystalline solar cell and the said some wire used for the crystalline solar cell module assembly process which connects between crystalline solar cells with a some electric wire,
A cutting step of cutting the conductive film made of the pressure sensitive adhesive piece and the release paper into a plurality of pieces;
A film attaching step of attaching the plurality of the conductive films cut in the cutting step to a plurality of predefined locations on the front and back surfaces of the crystalline solar cell;
A peeling step of peeling the release paper from the conductive film attached to the crystalline solar cell; And
The main crimping step of crimping an electric wire connecting the crystalline solar cell and the crystalline solar cell through the adhesive piece.
Connection method of a crystalline solar cell comprising a. The method of claim 7, wherein
The crystalline solar cell of the solar cell with the conductive film from which the release paper has been removed and the plurality of electric wires are coalesced to preheat and pressurize the pressure bonding step at a front end of the main compression step. Connection method.

Images