Solar battery project

Thread Starter

Jomil

Joined Jan 9, 2013
6
I am working on a solar light battery project and am having a problem. I have no problems charging the battery with the solar panels. The issue is during discharge lights begin to flicker.
I am using 12 vdc 10,000mah nicach battery in line with CUI 12-24 vdc controller, plus an adjustable LVD (adjusted for cut-out at 10.5 vdc) with 3-M16, 12vdc, 3watt LED lamps. When battery reaches 10.5 vdc during discharge the lights begin to flicker on and off. I would like them to just shut off.
Question: is there a circuit that I could use in very low voltage that would alleviate the LVD. Or could I add something to LVD in line, anything to get rid of flickering light.
 

bertus

Joined Apr 5, 2008
22,270
Hello,

Can you post a schematic of the set-up you have now?

It looks like the Low Voltage Detection needs a hysteresis.
Now when the voltage reaches the 10.5 Volts, the leds are switched off.
This way there will be no load on the batteries and the voltage will rise a littlebit, letting the leds go on again.

Bertus
 

bertus

Joined Apr 5, 2008
22,270
Hello,

What you show is only a block diagram.
It tells nothing about the things inside the blocks.
What is the schematic of the INSIDE the LVD?

Bertus
 
Top