Concentrator photovoltaic assembly
A technology of concentrating photovoltaics and components, applied in photovoltaic modules, photovoltaic power generation, electrical components, etc., can solve problems such as expensive manufacturing processes, lower reliability, and effectiveness discounts, so as to improve reliability, eliminate angle deviation, and simplify optical components. The effect of the component
Inactive Publication Date: 2015-12-23
UNIVERSITY OF OTTAWA
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Problems solved by technology
Examples of these disadvantages include: (1) bonding SOE directly to the solar cell surface creates shear stress on the solar cell and reduces reliability; (2) bonding SOE to the solar cell carrier assembly requires a large solar cell carrier assembly, And so the cost is high; (3) bonding SOE to solar cells or to solar cell carrying components forms a thermal connection area that can cause stress thermally (thermally); (4) bonding SOE to solar cells requires accurate alignment, thus requiring a more expensive manufacturing process; and (5) adhesives used to bond SOEs to solar cells must provide both adhesive and optical coupling properties, compromising both effectiveness
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[0034] The present disclosure relates to a CPV module comprising a solar cell assembly secured to a backsheet and a secondary optical element bonded to the backsheet or the solar cell assembly. The secondary optical element is optically aligned with the solar cells of the solar cell assembly. Advantageously, the solar cell is spaced apart from the secondary optical element, which effectively eliminates any shear stress between the secondary optical element and the solar cell. This improves reliability. In addition, the bond that maintains the alignment between the solar cell and the secondary optical element is located between the secondary optical element and the backsheet or solar cell assembly, rather than between the secondary optical element and the solar cell. Thus, the aligned joint between the solar cell and the secondary optical element is kept out of direct sunlight, which means that heat generated at the solar cell when it is illuminated does not cause friction bet...
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A concentrator photovoltaic module that has a secondary optical element that has alignment features that cooperate with alignment feature of a solar cell assembly to self-align the secondary optical element with the solar cell. The secondary optical element is secured directly to the backplate or to the solar cell assembly. The secondary optical element is spaced-apart from the solar cell, which avoids shear stress between the secondary optical element and the solar cell.
Description
technical field [0001] The present disclosure generally relates to solar cell assemblies. More specifically, the present disclosure relates to solar cell assemblies for concentrated photovoltaic (CPV) applications. Background technique [0002] CPV technology uses optical devices such as lenses and mirrors to concentrate large amounts of solar radiation, or sunlight, onto small areas of solar photovoltaic cells to generate electricity. More specifically, CPV systems utilize optical groups or systems to concentrate sunlight onto small highly efficient multi-junction solar cells. [0003] Such optical groups typically include a refractive Fresnel lens primary optical element (POE) optically coupled across free space to a secondary optical element (SOE) that directs the concentrated light onto the solar cell . Examples of optical groups may include: (1) Fresnel lens primary optics and refractive secondary optics; (2) Fresnel lens primary optics and reflective secondary optic...
Claims
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IPC IPC(8): H02S40/22
CPCY02E10/52H01L31/02008H01L31/0543H02S40/22
Inventor 理查德·贝亚尔
Owner UNIVERSITY OF OTTAWA