Wind power generation is difficult to apply to cars, but photovoltaic power generation can be used in cars.
The main reason why wind power generation cannot be used in cars is because the wind turbine installed on the car will increase the resistance of the car. When the wind resistance increases, the fuel consumption will also increase. The reason why cars are designed to be streamlined is mainly to reduce the drag coefficient and reduce the air resistance when the car is driving. When air resistance is reduced by 10%, fuel consumption will be reduced by 2.5%.
Here the aerodynamicists are working hard to reduce the air resistance, and there they are adding a wind turbine. The pace of the aerodynamicists is simply exasperating! With the addition of wind turbines, although it can generate electricity while driving, this is electricity obtained by increasing fuel consumption and has no practical significance. Energy must be lost after multiple conversions. It is better to directly use the engine to drive the generator to generate electricity with less loss. Therefore, wind power technology is not used in cars.
Solar generator technology can be applied to cars. Solar cells can be covered on the surface of the car and will not increase wind resistance like wind turbines. It has little impact on the car other than aesthetics, but solar panels have a problem with low conversion rates. The conversion rate of civilian battery panels is difficult to exceed 20%, and most are around 15-17%. When the solar illumination intensity is 1000 watts/square meter, the power generation of one square meter of panels can only be between 150-170wh.
The surface area of the car is limited, and the area of the battery panel is also limited. If there are two square meters of battery panels, the power generation power is only 150w. Factors such as light intensity, angle, etc. must also be considered. Therefore, the power generated by solar panels is not high. If the lighting is good, the battery can be charged with 1-2kwh of electricity in a day. The power consumption of electric vehicles is at least 15kwh/100km. Charging for one day can only increase the cruising range by a few kilometers, which is of no practical significance. It can be used in low-power low-speed electric vehicles, but it is not practical to use in cars.
But if high-efficiency panels appear, solar cells and cars can be perfectly integrated. For example, the solar power test conducted on the Toyota Prius:
It is said that the solar panel used in the test car has a conversion rate of up to 34% and an output power of 840w. In sunny weather, the electricity collected in one day can support the car to travel 44km.
However, it is currently in a testing state. It can be seen that the car is covered with solar panels on a large area. The rear windshield, trunk lid, hood, etc. are covered with panels, which affects the appearance to a certain extent. . , battery panels with an efficiency as high as 34% are a key. Low efficiency has no application value, and the high cost of high-efficiency battery panels is also a factor affecting promotion.
Because you are powered by wind, it is obviously impossible and unrealistic to use wind power to drive a car engine and then use the engine to drive the rotor or coil to generate electricity. Because it is impossible for the engine to generate electricity directly, just like a car must rely on the engine to generate electricity.to drive the generator.
It is feasible to use a car generator. The car generator is usually connected to the engine through a pulley and a belt to convert the mechanical energy output by the engine into electrical energy. Therefore, you can refer to this method and use a pulley. and straps to connect your generator to the wind output device. Specifically, you just need a belt of suitable length. Just connect the two together like a bicycle chain so that they can rotate together.
If you want to increase the transmission ratio, such as 1:2 (the wind blades rotate once, the generator rotates twice), you only need to add another belt and a pair of gears (teeth) with a large transmission ratio. Count one large and one small). For the connection method, please refer to the bicycle chain for two-person riding.
This is the simple principle of wind turbine.