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vikas
Guru

Join Date: Aug 2007
Posts: 548

battery design

08/28/2007 5:07 PM

i am planning to design abattery with specification & conditions like fast charging ,should charge with lesser input voltage , output terminals isolated from input terminals like transformer , input terminals should absorb power whatewer available like empty tank greater than 1-2v to 110vdc or so , should have high energy density/ weight , output will be constant regulated 12/24vdc , basic consideration is to couple super capacitors with chemical battery as accumulator through inbuilt control electronics , pls suggest technolgy for battery like lithium ion,nikel metal hydride ,sealed acid ,any new chemistry .pls suggest other consideration with pros & cons as well .should input resistance be inductive or capacative . presently online /offline mode of charge / discharge cycles are ignored . are there any other manifacturers /developers working on such technology
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jack of all trades
Guru
New Zealand - Member - Kiwi Popular Science - Weaponology - New Member Engineering Fields - Power Engineering - New Member Engineering Fields - Electrical Engineering - New Member

Join Date: Sep 2006
Location: Auckland, New Zealand
Posts: 8777
Good Answers: 376
#1

Re: battery design

08/28/2007 6:32 PM

Hello. Well more information on your application and engineering experience would be helpful. From what you have given so far it appears you want to build a self-contained battery + charger circuit + voltage regulator (including step up function) out of readily available batteries and parts.

I have been working on something similar. The basic compact design revolves around Maxwell Technologies inexpensive BCAP0350 350F 2.5V D-cell package super capacitors (groups of 2 or 4), coupled with a step-up voltage regulator. Mind you my application is high current pulse loads, so I don't have batteries or their associated charger circuitry.

More important information on your application is required (expected use/application(s), physical size limit, current required, battery run-time expected, etc) otherwise I would need to start making broad sweeping statements on battery and power technologies in general (which won't be very helpful to you).

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 jack of all trades
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