Cutting solar cells

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  • Guest
    Guest replied
    Oh Yea. I got like over 3000 cut mono solar cells. That I get for pretty cheap on ebay. for 100pcs I can get it for 8 bucks.

    Im just wondering if they produce more volts cut up.
    Say you have just as much coverage as a mono cell with these tiny cells. Would this infact produce more voltage?

    I know when you have solar in parallel. All P-Side and N-Side connected together you produce more Amp and less Volt.
    And Series you Produce more Volt.

    But do these tiny cells produce more volt. I dont know lol..
    But it makes sense to cut them and specifically use it for 12v battery.

    I guess I have to run expirement and find out myself...

    It be a rough expirement seeing as I dont know exactly the mono cell the person used to cut. So Im not sure what that cell wattage is to try and compare accurately with full cells.

    Just wondering if anyone knew the advantages, if producing more volt or amp cut up solar cells
    Last edited by Guest; 04-01-2016, 01:09 PM.

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  • inetdog
    replied
    I have never tried cutting them, but the mechanical characteristics are similar to a thin layer of glass. So scoring with a diamond took and then carefully snapping at the score line seems a likely bet.
    However they crack even more easily than glass and so I would expect to lose a few to unintended crack propagation.
    You cannot fire polish the cut edge the way you might with glass.

    Larger cells cost less per square inch that smaller cells, so it you have a source of cheap 6" cells and want to make a smaller panel of the same voltage (same number of cells) you could break the 6" up into, for example, nine 2" square cells.
    You would have to make sure that each smaller cell has a top surface metallic electrode line that you can connect tab(s) to. The back is a continuous metallic layer.

    Example: a nominal 12V battery panel will need about 36 cells, whether they are 6" square, 6" by 2" or 2" square.

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  • Guest
    Guest replied
    I hope you are right! Becuase that would be damn kewl!
    I mean... I been drawing some stuff
    Series and Parallel Combined.
    And if you are right... Then I'd like to also add smaller cells to this array.

    I wish to combine smaller mono cells with big mono cells, that can either produce more amp and more volt.

    What you think?

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  • SunEagle
    replied
    My guess is that a smaller cell will produce about the same voltage as a large one but less amps.

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  • Guest
    Guest started a topic Cutting solar cells

    Cutting solar cells

    Okay. well Im back
    Seein as there are no other solar Panel forums.. Not like this one anyway.

    I figure I give it a second chance.

    But I have several questions and experiments that I am tampering with.

    I just like to know what is the purpose of cutting solar cells into smaller cells?

    Do they cut them in smaller cells because it produces more volts?

    And also... What do they cut solar cells with?
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