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Bifacial photovoltaic module using heterojunction solar cells

  • US 9,947,822 B2
  • Filed: 02/02/2015
  • Issued: 04/17/2018
  • Est. Priority Date: 02/02/2015
  • Status: Active Grant
First Claim
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1. A bifacial solar panel, comprising:

  • a first transparent cover on a first side of the solar panel;

    a second transparent cover on a second side of the solar panel;

    a plurality of photovoltaic structures sandwiched between the first cover and the second cover; and

    one or more lead wires for outputting power generated by the solar panel, wherein the lead wires are positioned on an edge of the solar panel without shading the first and second sides of the solar panel;

    wherein a respective photovoltaic structure has a long edge and a short edge, wherein the long edge is approximately n times the short edge, n being an integer greater than or equal to two;

    wherein the respective photovoltaic structure comprises;

    a first metallic grid comprising a first edge busbar positioned on a first side of the photovoltaic structure; and

    a second metallic grid comprising a second edge busbar positioned on a second side of the photovoltaic structure;

    wherein the first and second edge busbars are on opposite edges of the photovoltaic structure;

    wherein the plurality of photovoltaic structures are arranged into n subsets;

    wherein the photovoltaic structures in a respective subset are electrically coupled in series in a shingled configuration, with the first edge busbar of a respective photovoltaic structure overlapping with the second edge busbar of an immediately adjacent photovoltaic structure; and

    wherein the n subsets of the photovoltaic structures are electrically coupled in parallel.

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