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  #1  
Old 10-14-2017, 12:25 PM
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TanTric TanTric is offline
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Smile Self Sustainable / Self Charge Solar Electric Car HELP with charger 12v input to 60V

Hi guys,

just to share my creation and to ask for some help, i simply adapted the circuit and motor
from an old Electric Scooter to a pedal car, it haves 3 wheels, the motor is the back wheel.
And soldered a 100WATT solar panel to it.

The system uses 5 x 12Volt VLRA battery's, 60 VOLT system, i designed the car to use a
12volt to 220V inverter, to use the input from the solar panel and feed the original 220v input
charger of the Electric scooter to charge the 60Volt bank, but this method is very inefficient because
the charger consumes 180watt plus the consumption of the inverter.

Can you guys help me with a simple circuit that consumes only around 100WATT (my solar panel
production), so i can use the 12-18V input to charge the 60Volt battery bank?

King regards




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Last edited by TanTric; 10-14-2017 at 02:11 PM.
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  #2  
Old 10-14-2017, 02:45 PM
wrtner wrtner is offline
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Quote:
Originally Posted by TanTric View Post
Can you guys help me with a simple circuit that consumes only around 100WATT (my solar panel production), so i can use the 12-18V input to charge the 60Volt battery bank?
If you could accept charging whilst not running - a pity, I admit - you could have a switch which puts the batteries in parallel and run the output of the panels straight in, possibly protected by a rectifier. When you wish to run, you switch back to series mode. But I admit it is not a very elegant solution.
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Old 10-14-2017, 03:16 PM
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ewizard ewizard is offline
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About the only way to get better efficiency would be to get a high power dc dc voltage regulator boost converter. Some I've seen on eBay would probably handle this for around $30. However the best solution for overall efficiency would be to get a 12 volt motor in it and run a regulator between the solar and batteries. One other thought though it would be quite a bit more expense is to get 5 smaller solar panels to put in series. Nice fun looking build
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Old 10-14-2017, 05:27 PM
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https://www.youtube.com/watch?v=18svQ8Yw68s https://www.youtube.com/watch?v=7F-F8tnUSsM&t=150s
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Last edited by wolf234; 10-14-2017 at 05:38 PM.
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Old 10-14-2017, 08:05 PM
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TanTric TanTric is offline
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solution?

much grateful brothers i guess i just found the solution on e-bay for only 7$, the chinese have it all!!

DC-DC 12V/24V to 48v 60v 72v Boost Power Supply Module Step Up Converter Charger | eBay


Module Properties: non-isolated step-up module (BOOST)
Input voltage: DC 10-32V
Output voltage: DC 36-60V ( continuously adjustable )
Output Current: 5A (MAX)
Input Current: 16A (MAX) (Please enhance heat dissipation if over 10A )
Output power: natural cooling 82W (MAX), enhance heat dissipation 120W (MAX)
No-load current: Typical 25mA
Voltage regulation: 0.5%
Dynamic response speed: 5% 200uS
Short circuit protection: None (Please install fuse or protective circuit at the input port)
Input Reverse Polarity Protection: None ( please series diode at the input port )
Dimension: 65 x 47 x 23.5 mm ( L x W x H )

Application:

DIY a output adjustable car power supply.
DIY a charger, for example, step up 12V power supply to charge a 48V battery
Power for electric device
Solar battery charger for electric vehicles




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