Redundant electrical architecture for photovoltaic modules
First Claim
1. A photovoltaic module, comprising:
- a conductive backsheet extending continuously and uninterrupted behind all of a plurality of photovoltaic cells of the photovoltaic module, wherein the conductive backsheet comprises a unitary component and wherein a collective footprint of the plurality of photovoltaic cells is entirely within a footprint of the conductive backsheet such that the conductive backsheet extends continuously and uninterrupted behind an entirety of each of the plurality of photovoltaic cells;
a substantially transparent front plate;
the plurality of photovoltaic cells disposed between the conductive backsheet and the front plate, the photovoltaic cells arranged in a plurality of rows, the photovoltaic cells in each row of photovoltaic cells being connected in parallel to each other and the rows of photovoltaic cells being connected in series to each other;
a plurality of conductive spacers that the plurality of rows of photovoltaic cells are interconnected between, the plurality of conductive spacers arranged parallel to and interposed between the plurality of rows of photovoltaic cells, each of the plurality of rows of photovoltaic cells and each of the plurality of conductive spacers being aligned along a first linear edge of the photovoltaic module, the plurality of rows of photovoltaic cells and the plurality of conductive spacers extending lengthwise in a direction normal to and away from the first linear edge; and
a power conversion device redundantly connected to the plurality of photovoltaic cells via a last conductive spacer connected to a last row of photovoltaic cells, the power conversion device substantially maintaining a maximum peak power of the photovoltaic module and converting a lower voltage collectively generated by the plurality of photovoltaic cells to a predetermined stepped up voltage greater than or equal to 12 volts,wherein;
a given spacer of the plurality of conductive spacers interposed between a given pair of the plurality of rows of photovoltaic cells that includes first and second rows is electrically coupled to a positive terminal of each and every photovoltaic cell of the first row such that the given spacer electrically couples the positive terminals of the photovoltaic cells of the first row to each other;
the conductive backsheet is excluded from an electrical connection between the given spacer and the positive terminals of the photovoltaic cells of the first row;
the given spacer is electrically coupled to a negative terminal of each and every photovoltaic cell of the second row such that the given spacer electrically couples the negative terminals of the photovoltaic cells of the second row to each other and electrically couples the negative terminals of the photovoltaic cells of the second row to the positive terminals of the photovoltaic cells of the first row;
the conductive backsheet is excluded from an electrical connection between the given spacer and the negative terminals of the photovoltaic cells of the second row; and
the conductive backsheet comprises electrical ground of the photovoltaic module.
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Accused Products
Abstract
One example embodiment includes a PV module comprising a conductive backsheet, a substantially transparent front plate, a plurality of PV cells, a plurality of conductive spacers, and a power conversion device. The PV cells can be disposed between the conductive backsheet and the front plate and can be arranged in a plurality of rows. The PV cells within each row can be connected to each other in parallel and the rows can be connected in series. The PV cells can be interconnected between the conductive spacers. The power conversion device can be redundantly connected to the PV cells via a last conductive spacer connected to a last row. The power conversion device can substantially maintain a maximum peak power of the PV module and can convert a lower voltage collectively generated by the PV cells to a predetermined stepped up voltage greater than or equal to 12 volts.
225 Citations
29 Claims
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1. A photovoltaic module, comprising:
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a conductive backsheet extending continuously and uninterrupted behind all of a plurality of photovoltaic cells of the photovoltaic module, wherein the conductive backsheet comprises a unitary component and wherein a collective footprint of the plurality of photovoltaic cells is entirely within a footprint of the conductive backsheet such that the conductive backsheet extends continuously and uninterrupted behind an entirety of each of the plurality of photovoltaic cells; a substantially transparent front plate; the plurality of photovoltaic cells disposed between the conductive backsheet and the front plate, the photovoltaic cells arranged in a plurality of rows, the photovoltaic cells in each row of photovoltaic cells being connected in parallel to each other and the rows of photovoltaic cells being connected in series to each other; a plurality of conductive spacers that the plurality of rows of photovoltaic cells are interconnected between, the plurality of conductive spacers arranged parallel to and interposed between the plurality of rows of photovoltaic cells, each of the plurality of rows of photovoltaic cells and each of the plurality of conductive spacers being aligned along a first linear edge of the photovoltaic module, the plurality of rows of photovoltaic cells and the plurality of conductive spacers extending lengthwise in a direction normal to and away from the first linear edge; and a power conversion device redundantly connected to the plurality of photovoltaic cells via a last conductive spacer connected to a last row of photovoltaic cells, the power conversion device substantially maintaining a maximum peak power of the photovoltaic module and converting a lower voltage collectively generated by the plurality of photovoltaic cells to a predetermined stepped up voltage greater than or equal to 12 volts, wherein; a given spacer of the plurality of conductive spacers interposed between a given pair of the plurality of rows of photovoltaic cells that includes first and second rows is electrically coupled to a positive terminal of each and every photovoltaic cell of the first row such that the given spacer electrically couples the positive terminals of the photovoltaic cells of the first row to each other; the conductive backsheet is excluded from an electrical connection between the given spacer and the positive terminals of the photovoltaic cells of the first row; the given spacer is electrically coupled to a negative terminal of each and every photovoltaic cell of the second row such that the given spacer electrically couples the negative terminals of the photovoltaic cells of the second row to each other and electrically couples the negative terminals of the photovoltaic cells of the second row to the positive terminals of the photovoltaic cells of the first row; the conductive backsheet is excluded from an electrical connection between the given spacer and the negative terminals of the photovoltaic cells of the second row; and the conductive backsheet comprises electrical ground of the photovoltaic module. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29)
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Specification