Solar cell module

1. A solar cell module, comprising:

a plurality of solar cells each having a rectangular shape including a long axis and a short axis, and including a first electrode disposed on a front surface of a substrate and a second electrode disposed on a back surface of the substrate, the plurality of solar cells being disposed along a first direction; and

a plurality of wiring members connected to the first electrode of a first solar cell and the second electrode of a second solar cell adjacent to the first solar cell among the plurality of solar cells,

wherein the plurality of wiring members include a core layer of metal, and a solder layer which surrounds a surface of the core layer and is formed of a solder material,

wherein a ratio D2/D1 of a thickness D2 of the solder layer to a thickness D1 of the core layer is approximately 0.05<D2/D1<0.08,

wherein the number of the plurality of wiring members is about 8 to 12,

wherein a distance between the first solar cell and the second solar cell is approximately 0.5 mm to 1.5 mm,

wherein a length of the short axis is approximately a half a length of the long axis,

wherein a thickness of the plurality of wiring members is approximately 270 μm to 320 μm,

wherein the plurality of wiring members each is a wire-shape,

wherein each of the plurality of solar cells is a fragment divided from a mother solar cell,

wherein the each of the plurality of solar cells includes a cut surface and a non-cut surface in the first direction, and

wherein neighboring two solar cells among the plurality of solar cells are disposed with the cut surface of one of the neighboring two solar cells and the non-cut surface of the other of the neighboring two solar cells facing each other in the first direction, wherein the non-cut surface includes an inclined side, and the cut surface lacks the inclined side, and wherein the inclined side faces the cut surface in the first direction.

2. The solar cell module of claim 1 , wherein the thickness D1 of the core layer is approximately 240 to 280 μm.

3. The solar cell module of claim 2 , wherein the thickness D1 of the core layer is approximately 255 to 265 μm.

4. The solar cell module of claim 2 , wherein the thickness D2 of the solder layer is approximately 15 μm to 20 μm.

5. The solar cell module of claim 1 , wherein a cross section of at least one of the plurality of wiring members has a polyhedral shape having at least a curved surface or at least three vertices.

6. The solar cell module of claim 1 , wherein the distance between the first solar cell and the second solar cell is approximately 1 mm.