It is a trend now to have an electric car but also solar panels on the house from which you charge the electric car.

I often pass by such a house with solar panels and an electric car connected to the electric charge from outside the house.

I personally support hybrid cars with low capacity batteries

Because the most profitable electricity becomes in the city.

The electric car was Edison's idea, But his employee H Ford told him that gasoline is the future.
So having a hybrid car reconciles both

I would try a solar bicycle.

I want to talk about:
- solar panels
Their efficiency, 5%, 20% differences, prices.

rigid or flexible solar panel? difference
Other forms of energy that can be used? The wind?

The discussion includes both theory and practice

I'm not saying it's a good idea or not. I want to talk to you to find out.

 

https://electrek.co/2022/09/13/modular-solar-ev-charger/

Will the technique be useful in the future? Or is it still profitable?

At the dimensions of the car with the solar panels in the picture, how many days are needed for the solar panels to charge for the car to go 10 Km, We assume that it is sunny.

 

Too many unknowns: panel ratings, panel efficiency, motor Wattage, motor efficiency, battery capacity, charger efficiency, geographical latitude, .....

 

Just a WAG here, but this should be the right order of magnitude. Those panels appear to be roughly half the size if my home installation, which can produce 7.5KW at midday on a sunny summer day.

So let’s say they can produce 4KW. On a good day, you get about 5 hours x peak, so let’s say they can produce 20KWH on a good day.

The minimum Tesla 3 battery is 60KWH. So a full charge would take 3 good sunny days.

Or, another way to look at it, Tesla 3 gets about 5 Km per KWH. So, theoretically a 1/2 hour charge at noon in a good sunny day might power it for 10 Km.

Yet another way. over the entire year, my system produces 9 MWH, so maybe 4.5 for that installation. That means, on average, it might give you 60 Km of driving per day.

So, it is not a silly pipe dream.

Edited: This, of course,, is calculated at my latitude and climate in Massachusetts

 

I've long wondered why cars don't have a small-ish solar panel to run a ventilation fan. There's no excuse - other than the minimal cost - for a car becoming absurdly hot in the sun. A computer fan would move plenty of air and make a huge difference. The panel could also top up the battery and help prevent a dead battery from leaving a light on.

Maybe the manufacturers are afraid idiots would use it as an excuse for leaving the kids or pets in the car.

 

https://pairedpower.com/pairtree-of...ers-level-2-charging-with-quick-installation/

An off-grid solar system isn’t cheap, as the starting price for the PairTree system is $26,000. Installation costs an average of $5,000, and some systems can cost over $70,000 depending on the battery size and number of chargers.
But, don’t let the price deter you from purchasing one, as some customers could be eligible for a 40% tax credit with the Inflation Reduction Act.

Those numbers can buy a lot of utility charging power at your house, even with the Taxpayers helping.

 

Those numbers can buy a lot of utility charging power at your house, even with the Taxpayers helping.

My grid-tied system, on the other hand, which cost me $21K, has produced $12K worth of power in 32 months. Four and a half years to pay for itself, and then it is all free. And urulity prices are not going down.

 

My grid-tied system, on the other hand, which cost me $21K, has produced $12K worth of power in 32 months. Four and a half years to pay for itself, and then it is all free. And urulity prices are not going down.

That's for a multi-use home PV application that can be a good deal if you own a house and expensive power is being offset.

A dedicated EV charging station at up to $70,000 each seems sort of expensive. Utility scale PV with storage would be my choice for general EV charging.

 

A dedicated EV charging station at up to $70,000 each seems sort of expensive.

Well, in this case, couldn't we do something DIY cheaper?
Any technology was initially expensive, a laptop cost $5k initially.

What costs more? I guess the solar panels, then the battery.

Solar energy was tested with large parabolic mirrors and a gamma stirling generator in the focus of the mirror.
They were more efficient than solar panels.
But for some incomprehensible reason they disappeared.

A well-made solar panel has an efficiency of 20%, polycrystalline.
A well-made Stirling engine has 40% efficiency, that is, double.

And the accumulation of energy can also be done through a hydrogen tank. It is half as efficient as a battery, but it is cheaper.

 

Yes, I would agree that a dedicated solar charging station for one car would not be cost effective.

 

Solar energy was tested with large parabolic mirrors and a gamma stirling generator in the focus of the mirror.
They were more efficient than solar panels.
But for some incomprehensible reason they disappeared.

Efficiency is only one parameter in cost effectiveness. You have to also consider:

Initial cost
Maintenance cost
Reliability
Useful lifespan
Scalability

And probably many more that do not come to mind immediately.

 

Hello,

Solar panels may be more efficient in the near future because of recent advances, but how near is hard to say. How fast they can get into production with the new process.

 

What's the incentive for the Chinese to get more efficient solar panels in mass production? They rule the market.

https://time.com/6564184/chinese-solar-panels-cost/
The True Cost of Chinese Solar Panels

 

The same thing with Li Ion batteries. The largest natural reserves of lithium are in China.
Lithium has a small Z, so it is a very light metal, when the weight of the batteries becomes important.

An electric car can be charged in 2 hours if you are lucky enough to find a fast electric charger.
I follow someone on YouTube who travels the world with an electric car.

Every 100 km in winter and 300 km in summer, he prepares to wait at least twice in the car.
The battery has less capacity in winter.

And yet,
Very few had a model airplane with a thermal engine.
Now many have drones with 4 electric motors.

This makes me think that it is possible that electric is the future.

 

Electric car 1906, electric car charger 1912

 

Electric car 1906, electric car charger 1912
View attachment 337724

Both museum pieces because of poor technology and infrastructure.

Electric cars are currently still a step back in general usability for the general public because of immature mobile charging infrastructure and pricey public energy from those limited resources.

 

Electric car 1906, electric car charger 1912
View attachment 337724

What the heck is she wearing on her head, or did she get an electric shock when charging that four wheeled bicycle