How does the sun drive a car?

The sun is an immense hot sphere. It releases enormous energy into the surrounding space every moment, and this energy is inexhaustible, clean and pollution-free. Always available for free. So today, when pollution becomes severe, people naturally turn their thoughts to the sun. Solar cars are born.

Of course, sunlight doesn't drive the car directly, but sunlight shines on the solar cells. Solar cells convert light energy from the sun into electrical energy, and the electrical energy drives the car's engine. In this sense, solar cars are actually electric cars, but they are different from electric cars. Electric car batteries are charged by the electricity grid, while solar cars use solar cells.

A solar cell is a plate-shaped device that can recreceive light energy from the sun and convert light energy into electrical energy. It is mainly made of polycrystalline silicon panels or monocrystalline silicon panels.

The energy extraction method of solar cars is: low-power solar panels are placed directly on the roof of the car, while high-power solar panels are placed on the roof (like the roof of a car). garage).

The electrical energy received by the solar cells placed on the roof of the car directly drives the car forward. When there is sunshine, the electricity generated by the solar cells not only drives the solar car, but also has a surplus, and the remaining electricity can be stored in the car battery. In this way, the driving capacity of solar vehicles can be effectively expanded.

Do you know what u look likene solar car?

(1) The electrical energy stored in the battery W=UIt=24V×300A×3600s=2.592×107J,

The solar energy required W sun=

(2) Electrical energy consumed by the motor:

W motor=UIt=24V×20A×25×60s=7.2× 105J;

(3)Motor thermal powerPheat=I2R=(20A)2×0.2Ω=80W,

The total motor power P=UI=24V×20A=480W ,

The mechanical power of the motor P=P-P Heat = 480 W-80 W = 400 W;

Answer: (1) If 36% of solar energy is converted into electrical energy, 7.2 × 107 J of solar energy must be converted to fully charge the car. battery.

(2) When the car's electric motor operates normally for 25 minutes, it will consume 7.2 × 105 J of electrical energy.

(3) When the motor works normally, the heating power of the coil is 80W and the mechanical power of the motor is 400W.

Can can you imagine what it means to study a product for 29 consecutive years? ​​Since 1988, successive generations of students at the University of Waterloo in Canada have been committed to creating a sustainable mode of transportation? , what does it look like?

This is the new Midnight Sun solar car. A total of 11 vehicles have been built over the past 29 years. They are now preparing to update the twelfth generation Midnight Sun product. XII.

Before that, let's take a look at their most famous tenth generation solar car:

It is a three-wheeled solar car that cannot drive only one person. Assholedesign for aluminum:

The eleventh generation product was presented at the U.S. Solar Challenge 2016:

▲The eleventh generation solar car Midnight Sun XI

The current twelfth generation The product is still in the design and testing phase, and there is very little information. Only rough details have been announced.

Midnight Sun XII adopts a composite aerodynamic body as a whole. The body will use high-performance solar cells to use sunlight to create electricity. The car will have 326 solar cells and a built-in 16 KWh lithium battery. , which can produce about 400 km of travel.

And the twelfth generation solar vehicle is expected to participate in the 2018 US Solar Challenge, attracting solar fleets from around the world.

Next year will be the 30th anniversary of the Midnight Sun car. It doesn't matter if this car can be successfully financed bycrowdfunding, but with this kind of perseverance from generation to generation, Geeks would like to give it a helping hand!

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Midnight Sun XII is currently raising crowdfunding funds on Kickstarter with 3D printed models and clothing as rewards. Crowdfunding funds start from CA$10. Currently, he has received support from 134 people and. a total of 774.90 RMB was collected. The objective achievement rate is 150%.

▲Crowdfunding since launch