JPS6236307Y2 - - Google Patents

Description

[Detailed description of the invention] This invention relates to a wiring structure for electrically connecting a plurality of solar cell elements, and in particular, a conductor is placed on one surface of an insulating sheet member to connect the solar cell elements. The solar cell elements are printed and formed in a form corresponding to the arrangement, and are used to electrically connect the solar cell elements.

As is well known, electrical tangents between different electrodes of conventional solar cell elements are made by soldering using copper wires or the like. As a result, the lead wires come into direct contact with the outside air and other elements, making them prone to corrosion, electrical leakage, wire breakage, and other malfunctions, and the overall surface is uneven, requiring space for installation into calculators, etc. It had the disadvantage that it required a lot of money. Furthermore, the above-mentioned wiring structure by soldering has problems such as requiring a lot of effort in wiring work and having many defective elements during manufacturing.

Therefore, the purpose of this invention is to solve the above-mentioned drawbacks and problems, and to simplify the electrical connection of multiple solar cell elements, reduce the unevenness of the electrical wiring part, and create a design that is thin overall. It is an object of the present invention to provide a wiring structure for a solar cell that is easy to process and incorporate into a calculator, etc., and that can prevent electrical connection failures during use.

In order to achieve the above-mentioned object, this invention specifically includes a plurality of solar cell elements having different polarity electrodes at a distance D, and a plurality of solar cell elements having the same polarity of each solar cell element. An insulating substrate for arranging and supporting the solar cell elements so that the distance between the electrodes is a constant pitch P, and a length L range suitable for spanning between different polarity electrodes in each adjacent solar cell element. electrodes of a plurality of solar cell elements arranged and supported at regular pitches on the insulating substrate; A solar cell formed by bonding the insulating sheet member to the insulating sheet member and electrically connecting different polarity electrodes of adjacent solar cell elements via a conductor layer provided on one surface of the insulating sheet member. This is the wiring structure.

Hereinafter, the wiring structure of the solar cell according to this invention will be explained in detail based on specific embodiments shown in the drawings.

FIG. 1 is a schematic plan view of a solar cell element 1 applied to this invention. The solar cell element 1
has a wide-area light-receiving surface 4 on one surface, and has different polarity electrodes 2 and 3 spaced apart by a distance D on the surface on the light-receiving surface side. The solar cell elements 1 are arranged and fixed with the light-receiving surface 4 facing upward with respect to the insulating substrate 5 so that a constant pitch P is formed between the same polar electrodes of each solar cell element. On the other hand, in this invention, an insulating sheet member 6 is prepared in which conductor layers 7 are printed on one surface at predetermined intervals. The insulating sheet member 6
The conductor layer 7 formed on one surface of the insulating substrate 5 has a length L suitable for being spanned between the different polarity electrodes of each adjacent solar cell 1, 1 fixedly arranged on the insulating substrate 5. It is formed by a printing process with a constant pitch P throughout. Preferably, a conductive adhesive layer is provided on the outer surface of the conductor layer 7 in the insulating sheet member 6. The insulating sheet member 6 is bonded to the electrode portions of a plurality of solar cell elements 1 arranged at regular pitches on the insulating substrate 5, and has a conductor provided on one surface of the insulating sheet member 6. Different polarity electrodes of adjacent solar cell elements 1, 1 are electrically connected via layer 7.

In this invention, instead of bonding an insulating sheet member 6 provided with a conductor layer 7 to the solar cell element group, the conductor layer of the insulating sheet member is attached to the corresponding electrode of the solar cell element group. It may also be configured such that, in a positioned state, it is surrounded by a transparent heat-sealable plastic film from both front and back sides and fixed by heat-sealing.

According to the solar cell connection structure of this invention having the above configuration, it is possible to simplify the electrical connection of multiple solar cell elements, and it is extremely effective in terms of saving labor and adapting to mass production. It is. Furthermore, since the unevenness of the electrical connection portion can be reduced, it can be easily incorporated into a calculator or the like. In addition, it is possible to prevent electrical connection failures as much as possible during use of the device, making it an extremely practical and effective wiring structure for this type of device.

[Brief explanation of the drawing]

FIG. 1 is a schematic plan view of a solar cell element applied to this invention, and FIG. 2 is a plan view showing an example of a connection mode of a plurality of solar cell elements. 1... Solar cell element, 2, 3... Electrode, 4...
Light receiving surface, 5... Insulating substrate, 6... Insulating sheet member, 7... Conductor layer.

Claims (1)

[Claims for Utility Model Registration] (1) A plurality of solar cell elements 1 having different polarity electrodes 2 and 3 with a separation distance D and a constant pitch between the same polarity electrodes of each solar cell element. an insulating substrate 5 for arranging and supporting the solar cell elements so that the pitch is P, and a constant pitch over a length L range suitable for spanning between the different polarity electrodes of each adjacent solar cell element 1; The electrodes of a plurality of solar cell elements 1 are arranged and supported at regular pitches on the insulating substrate 5. The insulating sheet member 6 is bonded to the insulating sheet member 6, and the different electrodes of adjacent solar cell elements are electrically connected via the conductor layer 7 provided on one surface of the insulating sheet member 6. A solar cell wiring structure characterized by: (2) Utility model registration claim No. (1) characterized in that a conductive adhesive layer is provided on the outer surface of the conductive layer 7 provided on one surface of the insulating sheet member 6. The wiring structure of the solar cell described in section.