JP2005251960A - Method for repairing solar battery panel, and method for manufacturing the same - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a method for repairing a solar battery panel by jointing a connector to the back face of a solar battery for repair at repairing of the solar battery panel, and preliminarily forming it by using a metallic mold, in order to efficiently perform the integrating operation of the solar battery for repair on the solar battery panel, and to provide a method for manufacturing the solar battery panel by preventing the connector of a solar battery from being fractured at repairing of the solar battery panel. <P>SOLUTION: This method for repairing a solar battery panel comprises a first process of extending the connector of a solar battery adjacent to the setting place of a solar battery for repair vertically to the solar battery panel; a second process of jointing the connector to the back face of the solar battery for repair; a third process of bending the connectors of the surface and back face of the solar battery for repair in the vertical direction of the panel after the second process; a fourth process of bonding the solar battery for repair whose connector is bent in the third process to the setting place of the solar battery panel, and a fifth process of jointing the connector of the solar battery extended in the first process to the connector of the solar battery for repair formed in the third process after the fourth process. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a method for repairing a solar cell panel mounted on a solar cell panel mounted on an artificial satellite, for example, and a method for manufacturing the same.

  In order to provide a replacement method for repairing a solar panel with a damaged solar cell array, which can be easily repaired and without damaging the solar panel during repair, the replacement solar cell array has failed. A device that is bonded on a solar cell array and electrically incorporated into a solar panel is disclosed (for example, see Patent Document 1).

JP2003-158286A (FIG. 1)

In the conventional method for joining solar cells with connectors, it is necessary to arrange several to several thousand solar cells with connectors depending on the scale of the satellite, but connector joining according to the honeycomb panel shape and the solar cell mounting area is required. There is a problem that it is difficult to reasonably join.
Further, when one of the solar cells with connectors arranged in a plurality fails, it is necessary to replace it with a normal solar cell. When connecting a solar cell with a connector, the connector is deformed several times. However, the connector is broken due to repeated stress at the time of deformation, and there is a problem in quality that a normal product becomes a defective product.

  The present invention has been made to solve the above-described problems, and an object thereof is to provide a rational joining method and that a connector can be manufactured without breaking during repair.

  The method for repairing a solar cell panel according to the present invention is a method for repairing a solar cell panel including a plurality of solar cells electrically connected to each other. The first step of extending the panel in the vertical direction, the second step of joining the connector to the back surface of the repair solar cell, and the connector on the front and back surfaces of the repair solar cell after the second step A third step of bending in the vertical direction, a fourth step of bonding the repair solar cell in which the connector is bent in the third step to the installation location of the solar cell panel, and the fourth step Thereafter, the solar cell connector extended in the first step and the repair solar cell connector formed in the third step are joined to each other.

  The method for manufacturing a solar cell panel according to the present invention is a method for manufacturing a solar cell panel including a plurality of solar cells electrically connected to each other, and is prepared by joining a connector to the back surface of a solar cell with a connector. A step, a second step of forming connectors on the front and back surfaces of the solar cell with connector in the vertical direction of the panel, and a solar cell in which the connector is formed in the first step and the second step. And a fourth step of joining together the connectors of the solar cell for installation formed in the second step after the third step.

  When repairing a solar cell panel, a connector is joined to the back surface of the solar cell for repair, and a mold is used in advance to efficiently incorporate the solar cell for repair onto the solar cell panel. And the stability of quality is improved.

1A and 1B are diagrams showing the shape of a solar cell with a connector, in which FIG. 1A is a front view and FIG. 1B is a side view.
1 is a solar cell, 2 is a light receiving surface side N-pole electrode of the solar cell, 3 is a connector, 4 is a welding connection by soldering or welding, 5 is a cover glass, and 6 is a silicone adhesive.
A solar cell with a connector is a solar cell in which a connector is electrically welded and connected to the light receiving surface side N-pole electrode by soldering or welding, and a cover glass is bonded with a silicone adhesive.

FIG. 2 is a view showing a solar cell panel in which a solar cell with a connector is bonded to a honeycomb panel, FIG. 2 (a) is a front view, and FIG. 2 (b) is a side view.
In FIG. 2, 7 is a solar cell with a connector, 8 is a honeycomb panel, 9 is a P electrode on the back side of the solar cell, and 10 is a silicone adhesive.

  A solar cell panel in which a plurality of solar cells with connectors are bonded to a honeycomb panel with a silicone adhesive. A plurality of solar cells with connectors are arranged and arranged by electrical welding and connection by soldering or welding. Is.

  A plurality of solar cells with connectors are arranged in tiles at intervals of about 3 to 0.1 mm (several to thousands depending on the size of the satellite), and the solar cells with connectors (N poles) are adjacent to each other. Electrically welded or connected to the P-electrode on the back side of the battery by soldering or welding.

  Next, a silicone adhesive is applied to a plurality of solar cells with connectors arranged side by side, and is bonded and fixed to the honeycomb panel.

Embodiment 1 FIG.
FIG. 3 is a diagram showing a process of welding the P-electrode on the back surface of the repair solar cell, FIG. 3 (a) is a front view, FIG. 3 (b) is a side view, and 11 is a solar cell. This is the back side P-electrode.
As a preparatory work for the solar cell for replacement for repair, the back-side P-electrode 11 of the solar cell is electrically connected to the back side of the solar cell with connector shown in FIG. 1 by welding. .

FIG. 4 is a diagram showing a state where a connector of a solar cell with a connector for a repair solar cell is molded, FIG. 4 (a) is a front view, FIG. 4 (b) is a side view, and 12 is mold molding. Connector.
The connector of the solar cell with connector shown in FIG. 1 (N pole) and the connector of the back side P pole electrode 11 of the solar cell welded for repair in FIG. 3 were bent using a mold. The state is the connector 12 molded with a mold.
The molded connector 12 is formed so that the connector of the solar cell with connector faces vertically upward with respect to the solar cell panel surface.

  Since the molded connector 12 is molded with a mold, excessive stress is not applied to the molded connector 12 and the connector 12 is not bent multiple times, so that the molded connector 12 can be prevented from being damaged. .

5A and 5B are diagrams for explaining the removal of the solar cell from the solar cell panel. FIG. 5A is a front view and FIG. 5B is a side view.
In FIG. 5, 14 is a removal solar cell, 15 is a front side N pole electrode of a solar cell.

The cover glass at the location of the removed solar cell 14 that needs to be replaced in the solar cell panel is cut out with a cutter. Next, electrical connection is made between the removed solar cell 14 and the adjacent solar cell with a connector, but the back side P-pole electrode 9 of the solar cell cuts the right side as much as possible, and the front side N-pole electrode 15 of the solar cell reaches the maximum. Work so that the connector becomes longer by cutting the left side.
Next, the removal solar cell 14 is removed from the honeycomb panel 8 using a chemical or a cutter.

  Finally, the rear P-side electrode 9 of the solar cell and the front-side N-pole electrode 15 of the solar cell left after cutting are stretched to the front side of the solar cell panel to secure a space where a replacement solar cell can be inserted, and a connector Make a good situation for welding.

6A and 6B are diagrams for explaining replacement of the solar cell with a connector of the solar cell panel, in which FIG. 6A is a front view and FIG. 6B is a side view.
In FIG. 6, reference numeral 13 denotes a solar cell with a connector, which represents a state in which a plurality of solar cells with a connector are bonded to a honeycomb panel with a silicone adhesive.

  The solar cell with connector 13 is formed as described with reference to FIG. 4, and the failed solar cell is removed from the solar cell panel. At this time, the “p connector” of the solar cell is placed on the solar cell panel. Cut at the maximum length so that it remains in place, and pull it out in the direction perpendicular to the surface of the solar cell panel.

  In order to join the connectors of adjacent solar cells, for example, a welding head for sandwiching the connectors (n connector and p connector) is automatically welded by a robot or a multidimensional table that operates in the XYZ directions. It is also possible to perform.

  FIG. 7 is a view for explaining joining of solar cell connectors on the solar cell panel, wherein 16 is a welding machine pressure head, 17 is a welding electrode, and 18 is a connector.

  The connector 18 is a flat plate made of copper plate, copper foil or the like. The connectors 18 of adjacent solar cells are overlapped with each other and sandwiched by welding electrodes 17 attached to the welding machine pressurizing head 16. After applying pressure from the pressure head 16, a welding current is passed to weld the two connectors 18. Next, the welding machine pressure head 16 and the welding electrode 17 are moved to other welding locations, and the same operation is repeated to join the connector 18 that requires welding.

  FIG. 8 shows a first embodiment of the present invention. It is a figure which shows the process of the replacement | exchange method of the solar cell with a connector in.

First, out of the cover glass covering the entire upper surface of the solar cell panel, the cover glass at the weld pad portion of the “n connector” formed on the upper surface of the solar cell panel is removed by cutting with a cutter.
The exposed connector that is present on both sides of the repair solar cell is cut at a location immediately adjacent to the weld pad portion and carefully bent upward (step 1).

  Subsequently, the failed solar cell is removed from the solar cell panel. At this time, the “p connector” of the solar cell is left on the solar cell panel. The back surface is welded (step S2).

Subsequently, as shown in FIG. 3, the connector of the solar cell with a connector to be newly replaced is electrically connected to the back side of the solar cell with the connector, and the back-side P-electrode 11 of the solar cell is electrically connected by welding. . (Step S3).
Furthermore, as shown in FIG. 1, a connector is used for both the connector (N pole) 3 of the solar cell with connector and the back side P-pole electrode 11 of the solar cell welded for repair in FIG. The molded state is the connector 12 that has been molded. (Step S4).

The new solar cell with connector thus formed is arranged at the repaired portion of the honeycomb panel as shown in FIG. 6 and fixed to the honeycomb panel with an adhesive (step S5).
The n connector and the p connector on the upper surface of the new solar cell for repair are joined and electrically connected to the adjacent solar cell (step S6).

  As this joining means, welding, adhesion, solder, or pressure welding may be used.

  Moreover, although all were demonstrated as an exchange method, it is also possible to manufacture a solar cell panel from such a manufacturing method with all the solar cells from the beginning, and work is simplified, and a welding head is changed. It is possible to automatically perform welding by a robot operating in the X, Y, and Z directions and a multi-dimensional table, and an automatic device is also possible.

It is a figure which shows the shape of a solar cell with a connector. It is a figure which shows the solar cell panel which adhere | attached the solar cell with a connector on the honeycomb panel. It is a figure which shows the process of welding a P pole side electrode to the back surface of the solar cell for repair. It is a figure which shows the state which shape | molded the connector of the solar cell for repair. It is a figure for demonstrating the removal of a solar cell from a solar cell panel. It is a figure for demonstrating replacement | exchange of the solar cell with a connector of a solar cell panel. It is a figure for demonstrating joining of the connectors of the solar cell on a solar cell panel. It is a figure for demonstrating the repair method of the solar cell panel with a connector.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 Solar cell, 2 Light-receiving side N pole electrode of solar cell, 3 Connector, 4 Welding connection by soldering or welding, 5 Cover glass, 6 Silicone adhesive, 7 Solar cell with connector, 8 Honeycomb panel, 9 Solar cell Back side P-pole electrode, 10 Silicone adhesive, 11 Welding of back side P-pole electrode of solar cell, 12 Mold-formed connector, 13 Adhering solar cell with connector, 14 Removal solar cell, 15 Front side of solar cell N Pole electrode, 16 welding machine pressure head, 17 welding electrode, 18 connector.

Claims (5)

In a method for repairing a solar cell panel comprising a plurality of solar cells electrically connected to each other,
A first step of extending a solar cell connector adjacent to a repair solar cell installation location in the vertical direction of the solar cell panel;
A second step of joining the connector to the back surface of the repair solar cell;
After the second step, a third step of bending the front and back connectors of the repair solar cell in the vertical direction of the panel;
A fourth step of adhering the repair solar cell in which the connector is bent in the third step to the installation location of the solar cell panel;
After the fourth step, a fifth step of joining the solar cell connector extended in the first step and the repair solar cell connector formed in the third step;
A method for repairing a solar cell panel, comprising: As the fifth step,
The method for repairing a solar cell panel according to claim 1, wherein welding is performed. As the fifth step,
The method for repairing a solar cell panel according to claim 1, wherein the method is by soldering. As the fifth step,
2. The method for repairing a solar cell panel according to claim 1, wherein the solar cell panel is repaired by pressure welding. In a method for manufacturing a solar cell panel including a plurality of solar cells electrically connected to each other,
A first step of preparing a connector by joining the back surface of the solar cell with the connector;
A second step of molding the connectors on the front and back surfaces of the solar cell with connectors in the vertical direction of the panel;
A third step of bonding the solar cell on which the connector is formed in the first step and the second step to the installation location of the solar cell panel;
After the third step, a fourth step of joining connectors of the solar cell for installation formed in the second step;
A method for producing a solar cell panel, comprising:

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