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24v Auto Cutt off battery Charger

Posted: Mon Dec 25, 2017 10:50 pm
by bpsystem
Hi, guys I have requirement for charge 24V battery with 28V DC 45A transformer, but i want to add auto cut off function for the transformer. pls help me..

Re: 24v Auto Cutt off battery Charger

Posted: Mon Dec 25, 2017 11:59 pm
by Neo
You mean to monitor battery voltage level and cut-off charging after the battery is fully charged ?

Re: 24v Auto Cutt off battery Charger

Posted: Fri Dec 29, 2017 7:01 pm
by bpsystem
yep...

Re: 24v Auto Cutt off battery Charger

Posted: Sat Dec 30, 2017 4:19 pm
by Neo
You can do it either with a comparator or a small microcontroller. In my case, I used a small microcontroller (ADC) that cut-off charging, measure voltage and if fully charged, stop further charging until voltage level become lower which is checked every few minutes (continuous charging system) or else continue to charge. A battery charging regulator such as LM317, LM338 would help you to cope up with charging topologies for different batteries.

Also, there are battery charging ICs that are made for different charging method. In my case, I found it is less interesting :)