Solar Panel and battery powered BLDC motor together

[billvon]

ya, this car weight is just 90 Kg, and it will driven slowly , around 30 kmph.

You might be able to hit that speed with a 500 watt motor, with good tires on flat ground and a very low friction drivetrain. But it will be somewhat challenging.

[SunEagle]

ya, this car weight is just 90 Kg, and it will driven slowly , around 30 kmph.

Not only slowly but not very far. What is the battery size and voltage you plan on using?

A 12v 220 AH battery will probably get you a couple of hours of run time but then it will be pretty drained even with the solar panel helping.

You can put in a bigger battery but that 110 watt panel will then not be able to get it back to full charge even if it was sitting still and directly pointed at the sun. Add more panels for more charging and you add weight to the car which will eventually requires a bigger motor to move.

What is your full intent of this experiment. To see if an electric car can be run off a solar panel? Some Universities have done that already but their "car" was engineered to be light, aerodynamic to run smooth and covered in solar cells. You may be able to find out more details on those "cars" by doing some research.

[Sunking]

ya, this car weight is just 90 Kg, and it will driven slowly , around 30 kmph.

I bet my golf carts can go faster and longer distance. Not too mention cost a lot less money.