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Tahmid
Joined: 17 Jun 2008
Posts: 111
Helped: 1
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 22 Apr 2009 14:17 Rapid Battery Charging |
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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.
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eem2am
Joined: 22 Jun 2008
Posts: 753
Helped: 13
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25 Apr 2009 19:48 Rapid Battery Charging |
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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
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Tahmid
Joined: 17 Jun 2008
Posts: 111
Helped: 1
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07 May 2009 21:03 Re: Rapid Battery Charging |
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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.
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Mr.Cool
Joined: 20 Jun 2001
Posts: 641
Helped: 24
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08 May 2009 2:58 Re: Rapid Battery Charging |
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the best pulse charger on the market is here: www.r-charge.com
Mr.Cool
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eem2am
Joined: 22 Jun 2008
Posts: 753
Helped: 13
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08 May 2009 16:28 Rapid Battery Charging |
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| seriously, there is no such thing as pulse charging for a nornmal battery...it is only for when battery is sulfated
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FvM
Joined: 22 Jan 2008
Posts: 5156
Helped: 767
Location: Bochum, Germany
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08 May 2009 22:19 Rapid Battery Charging |
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| 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.
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