At present, the application of solar cells is not new. Foreign countries often have special sports car competitions with solar cells as power supply, and some solar sports cars have the same speed as light motorcycles.
As the power source of aircraft, solar cells have also been tried abroad, but the requirements for aircraft weight are high, and they belong to special aircraft similar to human-powered aircraft, so they cannot be popularized for the time being.
Solar cells are also used for electricity storage and lighting of buildings, but the cost is too high, so they are no longer used in densely populated and affluent areas.
The application of solar cells is relatively rare in China. A few years ago, there was a small cruise ship in West Lake, Hangzhou. The top is covered with solar panels, which can supply power for batteries and motors on sunny days.
A teacher from Nanjing Institute of Aeronautics and Astronautics also used it the year before last, adding a ceiling to the bicycle and using solar cells to supply power to the motor, which may be the earliest solar electric bicycle in China.
Because of the high cost of solar cells, they need a large area and good sunshine when applied, and there are too few power sources as vehicles, so they are rarely used in vehicles.
In view of the high cost of solar cells, they need to rely on sunlight when applied, and they often need to be used in conjunction with storage batteries in practical applications, preferably under weak current conditions.
Although solar cells have little hope in the energy application of power machinery, in my personal opinion, solar cells can be developed and applied in many special occasions.
1. As a special charging power supply, it is used in uninhabited weather stations on islands or high mountains. This practice is similar to satellite communication, and it goes without saying that it is stable in long-term use.
Second, as a special charging power supply, you can listen to the radio by connecting the transistor radio, which is very practical for remote areas with poor materials that are not open to traffic all the year round.
Third, as a special charging power supply, it can be attached to a KO machine or a mobile phone to charge the battery for a long time, and it is not too difficult to be similar to a calculator.
Fourth, for watches or wall clocks that use only one battery for several months, it is best to stick a small solar battery as a special charging power supply, which completely eliminates the trouble of changing batteries.
The above practice is not difficult, but after waiting for many years, there is no such product available; It's no problem to modify the radio yourself, but other fine ones are more troublesome. It is best to hope that manufacturers have products listed.