Provided is a solar module with improved reliability. A solar module ( 1 ) is provided with a solar cell ( 10 ), a wiring member ( 11 ), a resin adhesive layer ( 12 ), and a buffer region ( 40 ). The wiring member ( 11 ) is electrically connected to the solar cell ( 10 ). The resin adhesive layer ( 12 ) bonds the solar cell ( 10 ) and the wiring member ( 11 ) to one another. The buffer region ( 40 ) is provided at least partially between the wiring member ( 11 ) and the solar cell ( 10 ). The buffer region ( 40 ) contains a non-crosslinked resin.
1. A solar module comprising:
a solar cell of a plurality of solar cells that includes a photoelectric conversion unit and an electrode formed on a surface of the photoelectric conversion unit;
the electrode comprising a bus bar along a longitudinal direction of a wiring member that electrically connects the solar cell to another solar cell of the plurality of solar cells, and a plurality of finger electrodes crossing the bus bar and integrally formed with the bus bar;
the wiring member being connected electrically to the solar cell;
a thermosetting resin adhesive layer connecting the solar cell to the wiring member arranged in a region surrounded by a back surface of the wiring member, a top of a solar cell, a side surface of the bus bar, and a side surface of a finger electrode;
a sealing member made of a non-crosslinked resin for sealing the solar cell; and
an insulating buffer region containing a non-crosslinked resin that becomes less rigid at a high temperature and that is surrounded by the back surface of the wiring member, the top surface of the solar cell, the side surface of the bus bar and the side surface of the finger electrode,
the insulating buffer region and the sealing member including a common non-crosslinked resin.
2. The solar module according to claim 1 , wherein the insulating buffer region is interposed between the thermosetting resin adhesive layer and at least one solar cell of the plurality of solar cells and the wiring member.
3. The solar module according to claim 1 , wherein the thermosetting resin adhesive layer contains a cured resin adhesive.
4. The solar module according to claim 1 , wherein the insulating buffer region is made of at least one type of non-crosslinked resin selected from a group including olefin-based resins, styrene-based resins, vinyl chloride resins, ester resins, urethane-based resins, and ionomers.