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Difference analysis between crystalline silicon battery and thin film battery

Difference analysis between crystalline silicon battery and thin film battery

1. Introduction of crystalline silicon components (polysilicon) Polycrystalline silicon photovoltaic modules are composed of glass, EVA, solar cells, backplanes and solar panels (as shown in Figure 2). Due to the reasonable price and good performance of polysilicon modules, they have a relatively large share in the market. At present, the conversion efficiency of polycrystalline silicon modules is about 15%, which is slightly lower than that of monocrystalline silicon products, but higher than that of amorphous silicon modules. Polycrystalline silicon cells have no photodegradation effect, and slight material quality differences will not cause solar cells to be affected. However, there is a certain difference in the single-chip power of polycrystalline silicon cells, and there is a certain difference in the power of modules with the same area (usually there is a difference of 20Wp-30Wp). Another advantage of polycrystalline silicon cells is that high and stable power generation performance can be obtained per unit area. The current nominal life of polysilicon modules is 25 years.

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Congratulations to Wuxi Jingri Optoelectronics Technology Co., Ltd. successfully launched!

Congratulations to Wuxi Jingri Optoelectronics Technology Co., Ltd. successfully launched!

Congratulations to Wuxi Jingri Optoelectronics Technology Co., Ltd. successfully launched!

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The working principle and basic functions of solar power lighting system

The working principle and basic functions of solar power lighting system

Working principle of solar power lighting system The working principle of the centralized controllable solar power generation lighting system: under the irradiation of sunlight, the electric energy generated by the solar photovoltaic cell components is charged to the battery pack through the system controller and the battery overcharge prevention control port. Inverter, mains grid-connected switch, mains grid and mains switch are the connection parts of the system and the mains grid. In the special case of insufficient sunlight or insufficient battery power supply, the city grid directly charges the battery. At the same time, the battery has surplus power, and the design can also supply power to the city grid. This power supply method has not yet been implemented. The light group connection control port adopts the common single-chip microcomputer or uses other devices with arithmetic control function. The power of the output port of the battery group is connected to the energy-saving light source through the anti-over-discharge, overload, short-circuit controller port, through the system controller lamp group connection control port and the constant voltage and constant current light source control port, and the energy-saving light source can be changed according to actual needs. Brightness and color.

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How to distinguish the quality of solar panels

How to distinguish the quality of solar panels

1 Look at the color Generally speaking, the appearance color of monocrystalline silicon and polycrystalline silicon panels is blue, and it is relatively uniform light blue or sky blue. If the color of the battery panel is dark and the colors are different, it must be that the workmanship is not meticulous. 2. Look at the surface of the tempered glass surface of the battery panel should be flat and free of foreign matter. In order to improve the production speed, some small manufacturers do not clean up the silica gel dripping on the surface of the tempered glass. If the silica gel is not cleaned, it will affect the power generation efficiency. 3. Look at the battery slices Each of the battery slices on the battery board is complete and is cut as a whole. However, many informal manufacturers in the market use broken cells to splicing together to form seemingly complete cells for welding. We are watching to see if there are any traces of cutting. This method has great risks. It may not be obvious at the beginning, but the spliced cells are easy to be disconnected again later, which affects the use of the entire battery board. Of course, this situation is difficult to detect with the naked eye.

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Analysis of the principle and function of power generation of solar panels

Analysis of the principle and function of power generation of solar panels

Sunlight illuminates the semiconductor p-n junction to form a new hole-electron pair. Under the action of the p-n junction electric field, the holes flow from the p region to the n region, and the electrons flow from the n region to the p region. After the circuit is turned on, a current is formed. This is how photoelectric effect solar cells work. Solar power generation There are two ways of solar power generation, one is the light-heat-electric conversion method, and the other is the light-electric direct conversion method. solar panel (1) The light-heat-electric conversion method generates electricity by using the thermal energy generated by solar radiation. Generally, the solar collector converts the absorbed thermal energy into the steam of the working medium, and then drives the steam turbine to generate electricity. The former process is a light-thermal conversion process; the latter process is a thermal-electrical conversion process. (2) The light-to-electricity direct conversion method uses the photoelectric effect to directly convert solar radiation energy into electrical energy. The basic device for light-to-electricity conversion is solar cells. A solar cell is a device that directly converts sunlight energy into electrical energy due to the photovoltaic effect. It is a semiconductor photodiode. When the sun shines on the photodiode, the photodiode will convert the sun's light energy into electrical energy and generate electricity. current. When many cells are connected in series or in parallel, it can become a solar cell array with relatively large output power.

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