ELECTRICAL TERMINATIONS FOR FLEXIBLE PHOTOVOLTAIC MODULES
In a photovoltaic module, the solar cells and other necessary layers may be placed on a backsheet. The backsheet is configured to provide physical protection of the underside of the module and also provide physical protection to electrical terminals by wrapping itself around the connections. It is emphasized that this abstract is provided to comply with the rules requiring an abstract that will allow a searcher or other reader to quickly ascertain the subject matter of the technical disclosure. It is submitted with the understanding that it will not be used to interpret or limit the scope or meaning of the claims.
1 . An apparatus comprising:
one or more solar cells, each of the one or more solar cells including an electrically conductive layer;
an electrically conductive tab electrically connected to the electrically conductive layer of at least one of the one or more solar cells; and
an electrically conductive wire, wherein a portion of the electrically conductive tab is wrapped around the wire and in electrical contact with the wire.
2 . The apparatus of claim 1 , further comprising an electrically insulating backsheet, wherein the one or more solar cells are attached to the backsheet.
3 . The apparatus of claim 1 , further comprising an electrically insulating backsheet, wherein the one or more solar cells are attached to the backsheet, wherein a portion of the backsheet is wrapped around and encapsulates the wire and the portion of the tab that is wrapped around the wire.
4 . The apparatus of claim 1 , wherein the electrically conductive layer is a metal foil layer.
5 . The apparatus of claim 4 , wherein each cell of the one or more solar cells includes a bottom electrode layer between a device layer and an insulating layer, wherein the insulating layer is between the bottom electrode and a backside top electrode layer.
6 . The apparatus of claim 5 , wherein the electrically conductive layer is the bottom electrode layer.
7 . The apparatus of claim 5 , wherein the electrically conductive layer is the backside top electrode layer.
8 . The Apparatus of claim 4 , wherein the metal foil layer is an aluminum foil layer.
9 . The apparatus of claim 4 , wherein the wherein the metal foil layer is a vapor barrier layer sandwiched between two insulating layers.
10 . A solar module, comprising:
a top layer;
a top encapsulant layer;
a plurality of solar cells sandwiched between the top encapsulant layer and a bottom encapsulant layer;
wherein each solar cell in the plurality of solar cells includes an electrically conductive layer, an electrically conductive tab electrically connected to the electrically conductive layer of at least one of the one or more solar cells; and
an electrically conductive wire, wherein a portion of the electrically conductive tab is wrapped around the wire and in electrical contact with the wire.
11 . The solar module of claim 10 , wherein the electrically conductive layer is a metal foil layer.
12 . The solar module of claim 11 , wherein each cell of the one or more solar cells includes a bottom electrode layer between a device layer and an insulating layer, wherein the insulating layer is between the bottom electrode and a backside top electrode layer.
13 . The solar module of claim 12 , wherein the electrically conductive layer is the bottom electrode layer.
14 . The solar module of claim 12 , The apparatus of claim 1 , wherein the electrically conductive layer is the backside top electrode layer.
15 . The solar module of claim 11 , wherein the metal foil layer is a vapor barrier layer sandwiched between two insulating layers.
16 . The solar module of claim 10 , wherein the solar cells in the plurality of solar cells are electrically connected in series.
17 . The solar module of claim 5 , wherein the electrically conductive tab electrically connected to the electrically conductive layer of a first or last of the solar cells electrically connected in series.
18 . The solar module of claim 10 , further comprising a bypass wire integrated into the module.
19 . The solar module of claim 10 , further comprising an electrically insulating backsheet, wherein the bottom encapsulant layer is attached to the backsheet.
20 . The solar module of claim 19 , wherein a portion of the backsheet is wrapped around and encapsulates the wire and the portion of the tab that is wrapped around the wire.