Method of manufacturing solar cell module

A method of manufacturing a solar cell module including a solar cell string between a light-receiving-surface-side protection material and a back-surface-side protection material, the solar cell string being formed of a plurality of solar cells and wiring members electrically connecting the plurality of solar cells to one another, the plurality of solar cells each having a light receiving surface from which light enters, and a back surface provided on a side opposite to the light receiving surface, the method comprising:

• a step A of
• disposing one of the wiring members on the light receiving surface of one solar cell of the plurality of solar cells, with a thermosetting resin adhesive interposed therebetween, the wiring member being to be connected to a solar cell adjacently located on one side of the one solar cell, and
• disposing another one of the wiring members on the back surface of the one solar cell with the resin adhesive interposed therebetween, the wiring member being to be connected to a solar cell adjacently located on the other side of the one solar cell;
• a step B of bonding the wiring members to the one solar cell by heating the resin adhesive at a temperature higher than a softening temperature of the resin adhesive but lower than a hardening temperature of the resin adhesive;
• a step C of bonding the wiring members to all the plurality of solar cells by repeating the step A and the step B alternately;
• and
• a step D of hardening the resin adhesive by heating the resin adhesive at a temperature equal to or higher than the hardening temperature of the resin adhesive with the resin adhesive being pressed against the wiring members.