Case study lightweight polycarbonate glazing roof

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Lightweight polycarbonate glazing helps extend electrical vehicle range

As automakers push to reduce fuel consumption and carbon dioxide emissions, alternative vehicle drivetrains are becoming more common. Makrolon® polycarbonate from Covestro offers excellent lightweight properties that help reduce vehicle weight and thereby improve energy efficiency.

OEM: Webasto AG
Industry: Automotive & Transportation
Application: Webasto AG solar-powered vehicle roof
Product: Makrolon® AG2677
Technology: Automotive Glazing

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Extended mobility for alternative vehicle drivetrains like Electrical Vehicle (EV) is limited by the battery capacity of current electric vehicles. Increasing range by adding batteries adds weight, and therefore is not a viable solution.

A Webasto AG roof module, featuring lightweight polycarbonate from Covestro, gives EV’s a solar-powered boost.

The slideable roof features integrated solar modules that can help power vehicle auxiliaries and feed the battery.

It’s possible through the mass-reducing power of polycarbonate. For instance, Makrolon® polycarbonate glazing can enable weight reductions of up to 50 percent when used instead of glass.

Polycarbonate glazing, including the transparent Makrolon® AG2677 polycarbonate used in the solar panel-integrated roof, makes a key contribution to achieving longer driving ranges by offsetting the heavy weight of electric vehicle batteries.

Polycarbonate glazing also offers improved insulation, thanks to its lower thermal conductivity – roughly five times lower than that of glass. In cold weather, this leads to increased temperatures of the internal surfaces, cutting the energy needed to heat the vehicle and improving comfort.

This feature also can boost the travel range of electric vehicles by reducing the need to generate heat using costly electrical energy – directly impacting vehicle range.

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