Chapter 199 Report to the Executive Administrator (22)

"Human power station!" 660 suddenly became interested. He knew about human power generators. He could even use a 3D printer to make a human power generator. But from human power generators to human power stations it is a process from quantitative change to qualitative change.

Is a human power station feasible? In fact, it is completely feasible. Human power generators are feasible, but there is basically no problem with human power stations. Of course, it is undeniable that a human power station is undoubtedly much more complicated than a human power station. This is similar to the relationship between a solar power station and a solar cell.

Solar cells are photovoltaic semiconductor thin sheets that use solar light to generate electricity directly, also known as "solar chips" or "photocells". As long as the illumination meets a certain illumination condition, they can instantly output voltage and generate current in the event of a loop. Physically, they are called solar photovoltaic (photovoltaic, abbreviated as pv), and are abbreviated as photovoltaic.

Sunlight shines on the semiconductor p-n junction to form a new hole-electron pair. Under the action of the built-in electric field of the p-n junction, the photogenerated holes flow to the p-region, and the photogenerated electrons flow to the n-region. After the circuit is turned on, a current is generated. This is the working principle of photoelectric effect solar cells.

There are two ways to generate solar power, one is the light-thermal-electric conversion method, and the other is the light-electric direct conversion method.

There are many types of materials for solar cells, including amorphous silicon, polysilicon, cdte, cuinxga(1-x)se2 and other semiconductors, or materials with element linkages of three, five, and two and six. Simply put, any material that generates electricity after light is illuminated is the material that solar cells look for.

Electric vehicle solar charging stations mainly test the reaction and absorption of light through different processes and methods, so as to achieve a revolutionary breakthrough in the combination of energy gaps, allowing short wavelengths or long wavelengths to be fully absorbed, and reduce the cost of materials.

There are also solar cell types: substrate type or thin film type. The substrate can be divided into single crystal type in the process, or after soluble, cooled to form polycrystalline blocks. The thin film type can be better combined with buildings, such as curvature or flexibility, folding type, and amorphous silicon is more commonly used in materials. There is also an organic or nanomaterial research and development, which is still a forward-looking research and development. Therefore, we heard of different generations of solar cells: the first generation of substrate silicon crystal (silicon     based), the second generation of thin film (thin    film), the third generation of new concept research and development (new     concept), and the fourth generation of composite film materials. (Excerpt from "Baidu Encyclopedia")

With solar cells, there can be solar power stations. However, solar power stations are not a simple superposition of solar cells. They have the following structure:

1.

Solar cell modules

Solar cell modules are the core part of the power generation system. Their function is to directly convert the solar radiation energy into DC power for load use or stored in the battery for backup. Generally, according to user needs, several solar panels are connected in a certain way to form a solar cell array (array), and then matched with appropriate brackets and junction boxes to form a solar cell module.

2.

Charging controller

In solar power generation systems, the basic function of the charging controller is to provide the best charging current and voltage for the battery, quickly, smoothly and efficiently charge the battery, reduce losses during the charging process, and extend the service life of the battery as much as possible; at the same time, protect the battery and avoid overcharging and overdischarge. Advanced controllers can record and display various important data of the system at the same time, such as charging current, voltage, etc.

3.

Battery

The function of the battery is to store the DC power emitted by the solar cell square array for load use. In the photovoltaic power generation system, the battery is in a floating charging and discharge state. During the day, the solar cell array charges the battery, and at the same time, the square array also charges the load electricity, and at night all the load electricity is supplied by the battery. Therefore, the battery is required to have small self-discharge and high charging efficiency, and also consider factors such as price and convenience of use.

4.

Inverter

Most electrical appliances, such as fluorescent lamps, TVs, refrigerators, fans and most power machinery, work with alternating current. In order for such electrical appliances to work normally, the solar power generation system needs to convert DC to alternating current. Power electronic equipment with this function is called an inverter. The inverter also has an automatic voltage stabilization function, which can improve the power supply quality of the photovoltaic power generation system.

(Excerpt from "Baidu Encyclopedia")

660's brain was running rapidly, but he still heard the executive officer tell him the instructions, "Look more and ask more. I know you have already thought a lot, but you still have to continue thinking more."
Chapter completed!