Edge Mountable Electrical Connection Assembly
Methods and devices are provided for improved large-scale solar installations for a photovoltaic module with a plurality of photovoltaic cells positioned between a transparent module layer and a backside module layer. The module includes a first electrical lead extending outward from an edge of the module from between the transparent module layer and the backside module layer.
1 . A photovoltaic module comprising:
a plurality of photovoltaic cells positioned between a transparent module layer and a backside module layer;
a first electrical lead extending outward from one of the photovoltaic cells, exiting from between the transparent module layer and the backside module layer through a strip of moisture barrier material, and into a first electrical housing;
a second electrical lead extending outward from another of the photovoltaic cells, exiting from between the transparent module layer and the backside module layer through a strip of moisture barrier material, and into a second electrical housing separate from the first electrical housing;
wherein the first edge housing is simultaneously coupled to a) an outward facing surface and a side facing surface of the backside module layer and b) a back surface of the transparent module layer, wherein contact to the outward facing surface is greater.
2 . A photovoltaic module comprising:
a plurality of photovoltaic cells positioned between a transparent module layer and a backside module layer;
wherein the backside module layer is offset from the transparent module layer such that a transparent module layer perimeter edge extends beyond a backside module layer perimeter edge;
at least one electrical housing positioned along an edge of the module to allow electrical connection to the photovoltaic cells by way of a first electrical lead in the housing that exits between the transparent module layer and the backside module layer,
wherein the housing is located beneath the transparent module layer and is positioned so as not to contact a front side surface of the transparent module layer;
wherein the housing is coupled to a) an outward facing surface and a side facing surface of the backside module layer and b) a back surface of the transparent module layer.
3 . The module of claim 1 wherein the module is a frameless module.
4 . The module of claim 1 wherein the backside module layer, transparent module layer, and the cells therebetween are coupled together without a frame extending around a perimeter of the module layers.
5 . The module of claim 1 comprises a glass-glass module.
6 . The module of claim 1 wherein one edge of the transparent module layer extends beyond a corresponding edge of the backside module layer.
7 . The module of claim 1 wherein one edge of the transparent module layer extends beyond a corresponding edge of the backside module layer by about 2 mm to about 10 mm.
8 . The module of claim 1 wherein one edge of the transparent module layer extends beyond a corresponding edge of the backside module layer, while all other edges remain substantially flush with corresponding edges of the transparent module layer.
9 . The module of claim 1 wherein transparent module layer comprise a larger sheet of material than the backside module layer so that at least one edge of the transparent module layer extends beyond a corresponding edge of the backside module layer.
10 . The module of claim 1 wherein the first electrical lead or the second electrical lead comprises of a flat wire or ribbon.
11 . The module of claim 1 wherein the first electrical lead or the second electrical lead comprises of a flat aluminum wire.
12 . The module of claim 1 wherein the first electrical lead or the second electrical lead comprises of a length no more than about 2× a distance from one edge of the module to an edge of a closest adjacent module.
13 . The module of claim 1 wherein the first electrical lead or the second electrical lead has a length no more than about 30 cm.
14 . The module of claim 1 wherein the module is in landscape configuration defined by a long dimension and a short dimension, wherein the first electrical lead extends from the module along the long dimension, closer to one end of the module than a middle of the module.
15 . The module of claim 1 wherein the first electrical lead extends outward from one edge of the module and the second electrical lead extend outward from the same edge of the module.
16 . The module of claim 1 wherein the first electrical lead extends outward from along one edge of the module and the second electrical lead extends outward from a different edge of the module.
17 . The module of claim 1 wherein the first housing and the second housing each define an interior space configured to accommodate encapsulant material injected into the space to form the moisture barrier.
18 . The module of claim 1 wherein the first housing and the second housing each have an opening allowing encapsulant material to be injected into the connecter to form a moisture barrier after the connecter is mounted onto the module.