I need help in designing a battery charger (SMPS)

[Tahmid]

Rapid Battery Charging

Hi all,

I need help in designing a battery charger (SMPS) which will charge a 100Ah 12V battery in about 3 to 4 hrs.

Input: 160VAC - 240VAC
Frequency: 50Hz
Battery: Lead Acid 12V, 100Ah
Charge Time: 3 to 4 hrs

I was thinking of using pulse charging method. But I need help in designing this.

Thanks.

 

[eem2am]

Rapid Battery Charging

pulse charging?

i have heard of pulsing a sulfated pb acid battery to try and bring it back to life. -not otherwise.

sorry but the faster you re-charge, the more efficient.

fastest i believe you should go is quarter of C or 25 Amps in your case.........so that would take about 4 hours.

tenth of C is nice for efficiency.

if you charge too quickly you will blow it up.

i think UC3909 is good for you ... ti.com

4 stage charger.

but you will have to add intelligence (uC) if you want detect sulfated (damaged or old) battery

 

[Tahmid]

Re: Rapid Battery Charging

Hi,
Thanks for your suggestion. I require the Idea/suggestion regarding quick pulse charging with Pic Microcontroller. Any help in this regard will be appreciated. Thanks.

 

[Mr.Cool]

Re: Rapid Battery Charging

the best pulse charger on the market is here: www.r-charge.com

Mr.Cool

 

[eem2am]

Rapid Battery Charging

seriously, there is no such thing as pulse charging for a nornmal battery...it is only for when battery is sulfated

 

[FvM]

Rapid Battery Charging

If you omit the term pulse chariging, your asking for a simple constant current/constant voltage charging, as it is achieved in normal operation in a car. You possibly won't charge the final 5 or 10 % of capacity, but otherwise it can work pretty good. Just need a 30 or 40 A current and voltage controlled SMPS.