in order to charge 48V battery system by solar panels,4 panels each of 12V .?

Question

4 such panels should be connected in such a way to produce 48V.is it corrected? i want to clear the idea to avoid any damage to the panels as will as to the batteries.because i have spent thousands of dollars on this system.

Answer 1

You will need more than 48v to charge 4*12V batteries. I think the charge voltage is around 13.5V/for a 12V battery. To avoid damage to the solar cells, include a diode in the circuit so the battery doesn't discharge through the cells when it isn't bright light. I'd go for 5 cells with a current limiting voltage regulator (and the diode)

Answer 2

Yes, you can interconnect 4 - 12V panels together, and charge a 48V system.

Typically each panel will have it's own isolation diode, which will cause a 0.6V drop, since you have 4 of them, there will be a 2.4V drop total. You should eliminate 3 of the isolation diodes, and just use one. These are generally located inside the panels themselves. Sometimes they are external

I assume you have calculated capacities? Solar panels are rated in watts, and they will only put out the maximum wattage when the sun is clear and directly shining into them. Typically you never see the maximum for more than a short time, as the heat generated from the sun decrease efficiency on some panels, and reduces output. Clouds, sun angle, smog all reduce output. Generally you can only assume 50% output over a given day. Also batteries are not 100% efficient, meaning you can put 100 watt/hours of energy into them, and only get 80 back. There are also built in in-efficiencies in batteries, as they lose power just by sitting there. Try not to under/over rate the solar panel as opposed to the battery capacity. Small panels can not correctly charge a very large battery bank, and large panels will over charge a battery bank, unless you use a charge controller.

If you happen to have a roof line that faces south, ther are solar shingles available. These are essentually singles that are solar panels, that you place on the roof. See the link below.

Also, you can go the DC to DC converter route, where you use a single 12V panel to charge a 48V battery. You use a DC to DC converter to change the 12V to 48V. Of course you get 1/4 of the current at 48V. See the link below.

Answer 3

permit's take a raffle and say the radio makes use of an consumer-friendly modern of 100mA @ 12V. It relies upon how loud it quite is frequently, yet i'm guessing it relatively is for a construction website. The panel ought to grant >100mA, and actually have a voltage >thirteen.8V at that modern to charge the battery on the comparable time through fact the radio is taking part in. The battery is 4500mAh so takes 450mA for 14 hours to totally recharge. i think of a 500mA panel may be a minimum, and a 1A panel may be greater suitable. The panel ought to be a 36 cellular style to charge a 12V battery, and the potential score to pass with the above currents is from 8-16W. It additionally ought to be nicely ventilated. The link under is a intense performance 16W panel it relatively is acceptable and it quite is 280 x 517 mm in length. call that 12 x 20 inches. it would elect a charge controller too. I even have had undesirable reviews with sealed lead acid batteries interior the warm solar.

Answer 4

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