Multi-wire interconnection technologies weaving the way for back contact and bifacial PV modules

Borgers, Tom; Voroshazi, Eszter; Govaerts, Jonathan; Szlufcik, Jozef; Poortmans, Jef

doi:10.1109/pvsc.2017.8366849

Cited by 2 publications

(3 citation statements)

References 1 publication

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“…Such an approach allows the highest potential of addressing performance and cost requirements in an initial stage. To this end, we consider conventional tabbing and stringing of commercial homojunction cells, based on standard SnPb soldering, both for the older 3BB BSF cells and the more recent 9BB PERC and TOPCON half-cells and multi-wire interconnection [1][2][3][4], as well as shingling of heterojunction cells [5,6]. These last concepts of multi-wire and shingling are, apart from providing an increased performance, both also very much interesting from an aesthetics point-of-view, as they provide a more homogeneous aspect to the active area of PV modules.…”

Section: Experimental Module Fabricationmentioning

confidence: 99%

Development and testing of light-weight PV modules based on glass-fibre reinforcement

Govaerts¹,

Luo

Borgers³

et al. 2022

EPJ Photovolt.

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In this paper we report on our approach on integrating c-Si PV into lightweight structures, in particular towards vehicle integration. To this end we want to get rid of the (bulk weight of the) glass but seek a suitable replacement in terms of mechanical stability. First we elaborate on the most basic standards and norms that VIPV products should relate to in terms of (thermo-)mechanical testing. Then, for the experimental part, 2 concepts are investigated. In a first approach, we reinforced the encapsulant with glass fibre material, while in a second one we applied a dedicated glass-fibre-reinforced sheet as a replacement of the backsheet. In both cases we stay as close as possible to using commercially available material. For each approach we elaborate the testing that has been carried out: thermal cycling, vibrations, mechanical shock and hail impact. On a final note, we point out some initial damp heat testing results, that are a particular challenge for light-weight modules without glass.

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Section: Experimental Module Fabricationmentioning

confidence: 99%

Development and testing of light-weight PV modules based on glass-fibre reinforcement

Govaerts¹,

Luo

Borgers³

et al. 2022

EPJ Photovolt.

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“…Imec's woven interconnection attempts to overcome this, by using an interconnection foil of copper wires held in place by interwoven, continuous glass fibres 12 . This brings the advantage of reduced silver consumption and an increased power yield from the multi‐wire interconnection technologies for two‐side contacted cells 13 . Cell to wire interconnection is provided by dispensed solder paste, whereas short‐circuiting between different wires is prevented by using the glass fibres as spacers.…”

Section: Background On Back‐contact Interconnectionmentioning

confidence: 99%

“…A more in‐depth analysis of the progress and knowledge of the back‐contact interconnection technology is beyond the scope of this paper but can be found in previous publications. 12,13 …”

Section: Background On Back‐contact Interconnectionmentioning

confidence: 99%

Three‐dimensional multi‐ribbon interconnection for back‐contact solar cells

Dyck

Borgers

Govaerts

et al. 2021

Progress in Photovoltaics

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Back‐contact solar cells are an interesting technology with advantages over traditional two‐sided cells. A lack of standardized and low‐cost interconnection methods inhibits their market penetration. In an attempt to overcome this obstacle, this work introduces an interconnection technology, based on a fabric of encapsulant with incorporated metal ribbons. The encapsulant is tailored for this application by adding glass fibres to a thermoplastic polyolefin. For this tailored encapsulant, characterization experiments were conducted and results on viscosity and coefficient of thermal expansion are shown. Initial reliability testing on sample‐size modules with high‐efficiency interdigitated back‐contact (IBC) cells shows promising results, passing up to four times the IEC 61215 standard for thermal cycling.

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Multi-wire interconnection technologies weaving the way for back contact and bifacial PV modules

Cited by 2 publications

References 1 publication

Development and testing of light-weight PV modules based on glass-fibre reinforcement

Development and testing of light-weight PV modules based on glass-fibre reinforcement

Three‐dimensional multi‐ribbon interconnection for back‐contact solar cells

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