Concentrator Photovoltaic (CPV) systems focus sunlight onto a solar chips with 3x3mm only.
With this technique effectivities up to 30% can be reached.
In one submodule an array of 200 solar chips is connected in series to achieve higher voltages.
A plate with 200 printed silicone fresnel lenses, placed 100mm above the solar chip array, is used to concentrate the light.
Based on the sum of tolerance during assembly, an adjustment of chip to lense can only be performed with a best fit technique.
4 cameras with each 3 motor axis developed by Ziemann & Urban are placed over a single lens in the corners of the submodule.
The lense plate holder has 4 additional axis to perform the movement for the adjustments.
The adjustment accuracy ist aprox. +/-0.15mm with a measurement resolution of 0.015mm.
After the adjustment process, the lense plate is moved into a sealing silicone bed and fixed with the help of UV bond, which keeps the lens plate in x,y,z position until silicone has cured.
After curing, the complete module (12 CPV submodules) is moved to an electrical and optical test station.
Here the Module is contacted, and a complete electrical test with up to 900V is performed.
The modules are powered, so all 2400 solar chips will glow.
2 cameras are moved in a meander shape with 800mm/s above all 2400 chips and measure the chip intensity.
The whole test needs 50 seconds.
The presented concept can be combined and realized in different variants:
- Fully automatic system including part handling
- Partial automation with manual handling
- manual rework station
