Solar cell connection: in series or parallel?

[clasou]

Bonjour,
always a beginner.
My concern, I have cells that I recovered from my solar garden lights.
They have two soldered wires, at the output of these wires I have two volts of voltage.
But when I connect two in series via these wires I always have two volts.
Someone have an explanation or how we link cells.
thank you in advance

[clasou]

Closed

[Christophe]

Hu?

[clasou]

Hello,
I don't know what hu means, but if I put it closed.
The reason comes from a seemingly soldering, and moreover as I ask the wrong questions there is never an answer.
a + claude

[Christophe]

Hu? = Christophe not understand.

So ultimately it works in series?

[Tagor]

Bonjour,
always a beginner.
My concern, I have cells that I recovered from my solar garden lights.
They have two soldered wires, at the output of these wires I have two volts of voltage.
But when I connect two in series via these wires I always have two volts.
Someone have an explanation or how we link cells.
thank you in advance

by connecting them:

- in series we get more tension
- in // we get more current

[Christophe]

Yes tagor, but it is also necessary to think of protecting the cells against current return in the case of a connection in // so that one cell does not supply the other. So 2 diodes mandatory I think right?

[clasou]

Thanks for the answers ,
Like I said it came from one of my welds which was not at the top.
For the series and the // and the diodes I knew but, I thought that there may be a difference for the connections on the cells.
I know it is certainly not very appealing to certain questions.
but you have to start, even at 60.
Age which I do not have yet besides :)
a + claude

[elephant]

The diode is used on "large" installations to prevent a panel that suffers from shading from impairing too much performance. This is far from being the case in our friend's modest essays, I believe.

[clasou]

Bonjour,
All in all agree, I think it only works on certain size of panels.
In the case of the solar case, it is only a quarter of a square meter and moreover it is internally equipped with a non-return diode.
By cons for cells, I am because last night when it was rather covered with us, I arrived at 2.2v on one.
a + claude