Micro-controller based Battery charger

[engineerpervez1]

I want to make a Lead Acid battery charger on Atmel Micro-controller as ATMega 8
battery rating is 100 amp.
for my UPS. this battery charger should have nice profile according to battery charging current requirment by the lasped time.
first it should limit the current up to 10% of battery full capacity,
then it allow time to fully charg the battery.
then when battery is maximum charged it should go on trickle charge.
.I have read a nice article about NEC "k" controller for this purpose.
but i am not familier to nec controllers.
so I want to make it on AVR.
hints, commints and ideas or even software is required.
I am familier to BASCOM software for the Atmel AVRs.

Thanks

 

[smd_lover]

You can get a lot of info from here:

http://www.atmel.com/dyn/resources/prod_documents/doc1659.pdf

Microchip also has application notes with a lot of handy info.

 

[Tahmid]

Hi,
Take a look here for some ideas: https://www.edaboard.com/threads/195822/

There I gave my inverter with ATMEGA16/32 and there is quick charger. It uses phase angle control for current controlling. You could get some ideas from there as there are quite some discussions on the hardware there.

Hope this helps.
Tahmid.

 

[engineerpervez1]

Hi,Thamid
can you send me the diagram of this charger
thanks