Vehicle-Integrated Photovoltaics into Cars

The invisibly integrated solar cells in the car roof feature high power density.
© Fraunhofer ISE
The invisibly integrated solar cells in the car roof feature high power density.
Shingled cells, integrated in a PV car roof.
© Fraunhofer ISE
Shingled cells, integrated in a PV car roof.
Schematic construction of a PV car roof.
© Fraunhofer ISE
Schematic construction of a PV car roof.

It is estimated that from 2028 onward, about one-third of all newly registered vehicles in Germany will be electric vehicles, some of them with hybrid drive units.
 

Increasing the mileage of electric cars by integrated photovoltaics

  • Solar cell integration into vehicle roofs and other vehicle components
  • Mileage gain in Germany of app. 3500 km per annum
  • Further optimization of solar cell technology for 50% increase in yield

Attractive appearance with coloured coatings

  • MorphoColor® for any colours of the spectrum with high colour saturation
  • Only 7% relative loss in module cover transmittance
  • Underlying solar cells are masked
     

Efficiently connected solar cells 

  • Compact integration by matrix shingle interconnection
  • No inactive areas between the cells
  • Reduced power losses under partial shading conditions
     

Silicon solar cells in spherically curved modules

  • Lamination of the shingled cells e.g. between two curved glass panes
     

Our Services

  • PV technological consultancy
  • Design and development of prototypes for integrated PV
  • Determination of the solar energy yield for regions, roadways, railways or transportation routes
  • Module reliability testing
  • Integration into vehicle power supplies (drive unit of electric vehicles, auxiliary batteries)
  • Energy and load management, power electronics and battery  systems
  • Analyses of electricity yield and costs
  • Coordination and management of R&D projects with industrial partners

Integrated PV in a Car Roof

© Fraunhofer ISE

PV car roof

The MorphoColor® coating with free choice of color makes the shingled cells almost invisible.

© Fraunhofer ISE

PV car roof

... with shingled solar cells.

© Fraunhofer ISE

PV car roof

... with integrated IBC solar cells.

© Fraunhofer ISE

PV car roof

... with multi-wire interconnected solar cells.

© Fraunhofer ISE

PV car roof

... with almost invisible IBC cells.

© Fraunhofer ISE

PV car roof

... with shingled solar cells.

Selected Research Projects

 

Lade-PV

The project "Lade-PV" is intended to demonstrate the marketability of PV applications in freight transport.

 

PV2Go

Solar Potentials of German Traffic Routes