Solar Cell Module

1 . A solar cell module comprising:

a photovoltaic cell module comprising an array of photovoltaic cells;

a rear housing to accommodate the photovoltaic cell module attached to the rear housing; and

an electrically conductive grid comprising webs,

wherein the array of photovoltaic cells is arranged opposite to a rear housing wall of the rear housing, wherein the electrically conductive grid is attached on an upper surface of the photovoltaic cell module and partly on a surrounding portion of the rear housing, and wherein the webs define window openings essentially provided in front of the array of photovoltaic cells.

2 . The solar cell module according to claim 1 , wherein the photovoltaic cell module is attached in a recess of the rear housing with a volume adhesive, wherein an upper side of the rear housing and an upper side of the photovoltaic cell module are flush.

3 . The solar cell module according to claim 1 , wherein each window opening defined by the webs has a window surface smaller than 500 mm 2 .

4 . The solar cell module according to claim 1 , wherein the electrically conductive grid is made of a punched metal sheet.

5 . The solar cell module according to claim 4 , wherein the rear housing comprises a number of side walls and a back wall, wherein the metal sheet covers at least one of the side walls and back walls of the rear housing.

6 . The solar cell module according to claim 4 , wherein the electrically conductive grid is directly attached to the photovoltaic cell module and the rear housing with an adhesive.

7 . The solar cell module according to claim 6 , wherein the adhesive is a non-conductive adhesive.

8 . The solar cell module according claim 1 , wherein the electrically conductive grid is printed as a screen print of conductive material on the upper surface of the photovoltaic cell module and partly on the surrounding portion of the rear housing.

9 . The solar cell module according to claim 8 , wherein the electrically conductive grid is directly attached to the photovoltaic cell module and the rear housing with an adhesive.

10 . The solar cell module according to claim 9 , wherein the adhesive is a non-conductive adhesive.

11 . A method of producing a solar cell module having a photovoltaic cell module and a rear housing comprising;

accommodating the photovoltaic cell module in the rear housing;

providing a number of photovoltaic cells in an array of photovoltaic cells;

arranging the array of photovoltaic cells opposite to a rear housing wall of the rear housing;

attaching the photovoltaic cell module in the rear housing;

providing an electrically conductive grid comprising webs on an upper surface of the photovoltaic cell module and partly on a surrounding portion of the rear housing, wherein the webs define window openings essentially provided in front of the array of photovoltaic cells;

applying an adhesive on one of a back side of the electrically conductive grid or on positions complementary to the electrically conductive grid on the photovoltaic cell module and on the rear housing, and

attaching the electrically conductive grid on the photovoltaic cell module and on the rear housing.

12 . The method according to claim 11 , wherein providing the electrically conductive grid comprises pre-bending the grid in a direction on an upper surface of the photovoltaic cell module to ensure contact on the photovoltaic cell module.

13 . The method according to claim 11 , wherein accommodating the photovoltaic cell module in the rear housing comprises; applying a volume adhesive in a recess in the rear housing; positioning the photovoltaic cell module in the recess in a way that the upper surface of the photovoltaic cell module is flush with an upper surface of the rear housing; and hardening the volume adhesive.

14 . The method according to claim 11 , wherein an additional housing comprising a conductive layer is provided encompassing the rear housing as well as contacting a complete edge area of the grid.