A multifunctional all-weather all-band solar power generation system and its application

Abstract

The invention provides a multifunctional all-day and full-wave-band solar power system. The multifunctional all-day and full-wave-band solar power system comprises a photovoltaic power generation unit which is arranged on the light receiving face of a device and generates power through the middle and short beam waves (440-1,100 nanometers), and a photo-thermal power generation unit which is arranged on the backlight face of the device and generates power through the sunlight not in 400-1,100 nanometers of beam waves. A photovoltaic module of the photovoltaic power generation unit has the heat dissipating and heat collecting functions, and is maintained at a low temperature, and the power loss is reduced. An integrated heat dissipation pipe conducts the collected heat out and stores the heat, and the part of stored heat is utilized for continuing to generate power. The generating capacity of the photovoltaic system is increased, power generation produced by the heat effect is increased, and therefore the generating rate of the whole system is increased.

Description

technical field [0001] The invention belongs to the technical field of photovoltaic cells, and in particular relates to a multifunctional all-weather all-band solar power generation system and its application. Background technique [0002] Light is the most common and important source of energy on the earth. Light is an energy carrier. The wavelength characteristics and particle characteristics of light are the two most important forms of direct energy transmission and existence of light. The energy of light can be utilized in different ways or forms. For example, our commonly used fossil fuels are the most common way to use light energy indirectly, while solar power and wind power are ways to directly use light energy. Solar power generation includes photovoltaic power generation that directly utilizes the particle characteristics of light and photothermal power generation that indirectly utilizes the wavelength characteristics of light at the same time. [0003] Photovolt...

AI Technical Summary

Problems solved by technology

[0005] Traditional single crystal silicon solar cells can only effectively use solar energy with a wavelength range of 400nm-900nm, and the rest of the ultraviolet light and infrared light cannot be effectively absorbed, which greatly limits the efficiency of crystalline silicon solar cells

[0006] In recent years, with the continuous optimization of the structure and process of photovoltaic devices, the utilization of short-wavelength light has been greatly improved, but there is still no effective solution for the utilization of long-wavelength light.

[0007] In addition, another consequence of the ineffective use of long-wave infrared light is that it will rapidly increase the temperature of the battery module. The optimal operating temperature of photovoltaic cells is 25 degrees. When the temperature rises by 1 degree, the maximum output of the module will decrease. The power will be reduced by 0.4%-0.5%. When the temperature is relatively high, such as in summer or in the southern or equatorial regions, the surface temperature of the photovoltaic module will rise to nearly 80-100 degrees, and the output power of photovoltaic devices will increase significantly. Decrease around 10%-20%

[0008] The effective utilization of long-wavelength light is crucial to photovoltaic power generation. For example, the prior art CN103531711A and CN103531712A make full wavelengths available for power generation through wavelength-selected material configurations, but the selected materials are expensive, poor in durability, and long-wavelength utilization It is still difficult to achieve satisfactory results

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