camilozk:
I have to feed 1000 led strips in 1000 different places at the same time. for this I need 1000 of something that feeds them. I am currently using 9 volts batteries for my prototypes, that are 20, but when I go up to 1000 pieces, it will be a big pile of electric garbage if I have to dispose 1000 9volts batteries. So, I was thinking on using 3.7volts lipo rechargable batteries
Do you plan on recharging each battery onsite ( at the 1,000 different places ) or
recharge all batteries at one central location?
How about 1000 wireless inductive chargers? No connectors needed, any user can place the battery end on the charger pack.
Example to have something to think about:
I don't know what the budget is ...
But wow, $40,000 retail for 1,000 wireless transmitters and 1,000 wireless receivers.
Since the batteries must already have some type of Power Connector for the LED String
then maybe use that same type of (50 cent) connector at the charger stations?
If you place orders in quantities of a thousand without asking for a reduced price, you should stop with a project like that way before you start it.
As OP has mentioned, he doesn't need to have 1000 wireless chargers, but he would need 1000 wireless receivers.
He mentioned that charging in 5 batches or so might be acceptable.
That's another opportunity to save on the investment.
If you need to guarantee the availability to charge 200 batteries at the same time, i would lay out the design to have something like 220 - 250 chargers available, so 10 to 25 % backup.
You also need to calculate the worst case scenario, where the batteries are discharged the fastest, and see if you can keep up with 1/5 of that in charging time.
And also keep deterioration of the battery in mind.
"maybe use that same type of (50 cent) connector at the charger stations"
All that plugging & unplugging will quickly become a repair maintanence nightmare tho.
CrossRoads:
"maybe use that same type of (50 cent) connector at the charger stations"
All that plugging & unplugging will quickly become a repair maintenance nightmare tho.
If no Power Connectors?
Then how will the battery connect to and disconnect from the LED string?
camilozk:
I have to feed 1000 led strips in 1000 different places at the same time. for this I need 1000 of something that feeds them. I am currently using 9 volts batteries for my prototypes, that are 20, but when I go up to 1000 pieces, it will be a big pile of electric garbage if I have to dispose 1000 9volts batteries. So, I was thinking on using 3.7volts LiPo rechargeable batteries
Well now, that does clarify the situation - which reduces to 1000 repetitions of one design situation. Still, the design process must be followed. Will the LED strips run from a 3.7 V battery in the first place? You need to specify what these "LED strips" are. Are they to be controlled by Arduinos?
If indeed, a single LiPo cell is appropriate, then you simply need to use 18450 batteries loaded into a holder to power the LED strip, and separate (twin or quad cell) chargers - as many as suits your situation. The cells and chargers are readily available and cheap (cheaper than any other solution you will find), though it is recommended you always perform the charging in a separate fireproof shed.
mrsummitville:
If no Power Connectors?
Then how will the battery connect to and disconnect from the LED string?
What I was suggesting was connector-less charging. Have you seen the ads where someon just plops their phone down on a pad? No plugging/unplugging anything. Just drop the business end of the LED strip into a slot on the charger to ensure good alignment, come back when it's done. Any volunteer can do it, no sore fingers/busted wires from disconnecting battery backs, etc.
Pretty sure you can get a better price buying 1000, or you can work with someone to have custom charger/receiver set made.
I have to try how long will they last, but arduino pro mini 3.3 should do the job
Now I am also thinking on how to know I am buying good quality batteries. I know as a fact that there are many chinese providers selling really shitty batteries, but how to be sure what you are ordering?
camilozk:
Now I am also thinking on how to know I am buying good quality batteries. I know as a fact that there are many Chinese providers selling really shitty batteries, but how to be sure what you are ordering?
True enough. I don't know, but Google may have some ideas.
camilozk:
I have to feed 1000 led strips in 1000 different places at the same time. for this I need 1000 of something that feeds them. I am currently using 9 volts batteries for my prototypes, that are 20, but when I go up to 1000 pieces, it will be a big pile of electric garbage if I have to dispose 1000 9volts batteries. So, I was thinking on using 3.7volts lipo rechargable batteries
Why are you using lipo batteries for this ? Is it airborne ?
.
They are very expensive , would lead acid cells be more suitable ?