Infoclue Posted April 8, 2010 Report Share Posted April 8, 2010 Hi Guys. I need some help. I need to know if this is possible and if it is how to make it. Or if a product likes this is on the marked somewhere?The solution is some kind of UPS power board that can control and monitor the charging of 2, 12VDC batteries. It must use the power from 230VAC power input by default and if power fails switch to battery 1. Then power on battery 1 is to lower to power the system it must switch to battery 2. The solutions works like at UPS with 2 batteries that it can switch between. Then the system use battery 2 and battery 1 is low it must start at recharge from the Solar panel power. Of course if the 230 VAC comes back it must switch to this power source in the charge and system power. If the batteries needs to be of some other volt that's okay as long as it is a standard battery that is physical small. Information on the system.Inputs:Input 1, 230VAC Input 2, 12VDC Solar panel.PSU:Some PSU that can supply the system with the power it needs from the 230 VAC input.Outputs:Output 1, 12VDC (the equipment on this output uses 500mA)Output 2, 1 RJ45 PoE with up to 15 Watts power (IEEE 802.3af PoE) Battery:2 X 12 VDC Lead battery (Total power time then both fully charged must be around 5 Hours)I/O ports:Battery 1 power level status I/O portBattery 2 power level status I/O port230 VAC input power level status I/O portSolar panel input power level status I/O portThe system that receive the IO are a: http://www.sierrawireless.com/productsandservices/AirLink/In-Vehicle_Platforms/AirLink_PinPoint_X.aspxHope that some guru can help me. If you need some more information on some of the parts, then please contact me. / Jens Quote Link to comment Share on other sites More sharing options...
Kevin Weddle Posted April 8, 2010 Report Share Posted April 8, 2010 230 Vac is very high voltage to charge 12V batteries. Commercial 12V battery charges use 120 Vac and have designs that are too difficult to be redesigned. You might take a 12V battery and create a circuit to charge a 9V battery, so you will know what basic circuits will be required. You could use simple 230 Vac to 12VDC converters and simple logic devices, but the batteries might overheat, and not last as long without a good charging circuit. Quote Link to comment Share on other sites More sharing options...
audioguru Posted April 8, 2010 Report Share Posted April 8, 2010 Kevin,Don't you know that 120VAC is used only in the US, Canada, Mexico and a couple of other countries. 230VAC is used in the remaining hundreds of countries all over the world. Quote Link to comment Share on other sites More sharing options...
Infoclue Posted April 12, 2010 Author Report Share Posted April 12, 2010 I live in Denmark so 230 VAC is the default here. :)I bought a Emtech Power (http://www.emtech.dk/Mini-UPS75W.htm) it gives me some of the functions i need, but not all. But it can bring my project into the next fase. But if some one have some clue on how to add a solar panel charger to this one i would like to hear from you./Jens Quote Link to comment Share on other sites More sharing options...
Silent Jack Posted June 8, 2010 Report Share Posted June 8, 2010 The instructables website has a project that works on this premise. I believe it was designed for 120vac, however the stepper/converter for that is relatively simple, I believe and fairly available. Likely find that at instructables too. Also, I believe I saw a video on youtube that combined solar power and battery power on a robot with switching based on power levels. Should be able to track down the pertinent info that way. Wish I still had the links to share. A quick look should find the most critical parts though. Quote Link to comment Share on other sites More sharing options...
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