Photovoltaic module, photovoltaic power generation device and incident angle adjustment method of photovoltaic module

Abstract

The embodiment of the invention provides a photovoltaic module, a photovoltaic power generation device and an incident angle adjustment method of the photovoltaic module. The photovoltaic module comprises a support, a first photovoltaic panel, at least one second photovoltaic panel and a reflecting panel, wherein the first photovoltaic panel, the second photovoltaic panel and the reflecting panelall are connected to the support, the first photovoltaic panel is used for generating power by sunlight which is received and directly irradiates, and the second photovoltaic panel is used for generating power by the received sunlight reflected by the reflecting panel. The first photovoltaic panel and the second photovoltaic panel are connected to the support and both can be used for generating power, and thus, an output power of a single photovoltaic support of a photovoltaic power station can be improved.

Description

technical field [0001] The invention relates to the technical field of photovoltaic power generation, in particular to a photovoltaic module, a photovoltaic power generation device and a method for adjusting the incident angle of the photovoltaic module. Background technique [0002] Photovoltaic Power Generation (Photovoltaic Power Generation) is a technology that directly converts light energy into electrical energy by using the photovoltaic effect at the semiconductor interface. It is mainly composed of three parts: solar panels (components), controllers and inverters. The main components included in the three parts are composed of electronic components. The solar cells are packaged and protected after being connected in series to form a large-area solar cell module, and then cooperate with power controllers and other components to form a photovoltaic power generation device. [0003] The solar photovoltaic power generation process is simple, there are no mechanical rota...

AI Technical Summary

Problems solved by technology

[0005] First, the energy density is low; although the sum of the sun’s energy projected to the earth is extremely huge, due to the large surface area of ​​the earth and most of the earth’s surface is covered by oceans, the solar energy that can really reach the land surface can only reach the solar radiation energy of the earth As a result, less solar energy can be directly obtained per unit area of ​​land, and the utilization of solar energy is actually the collection and utilization of low-density energy

[0006] Second, it occupies a large area; due to the low energy density of solar energy, this makes the photovoltaic power generation system occupy a large area, and every 10 kilowatts (KW) of photovoltaic power generation requires about 100 square meters (m 2 ), the average generating power per square meter is 100 watts (W)

[0007] Third, the conversion efficiency is low; the most basic unit of photovoltaic power generation is the solar cell module

However, the day-to-day tracking accuracy of existing photovoltaic systems is generally not high. For example, due to the influence of sunshine intensity, tracking sensitivity, dark clouds and other aspects, the actual availability of photovoltaic panels will be low or high power output cannot be maintained for a long time.

However, the existing technology increases the output power of power generation by increasing the number of photovoltaic panels in the photovoltaic power station, which will increase the area occupied by a large area. For the photovoltaic power station that has been built, the expansion area has certain limitations; For limited application environments (such as roofs), it is not appropriate to increase the number of photovoltaic panels

[0009] In addition, for the sunlight incidence angle of the photovoltaic panel (the angle between the sunlight and the plane of the photovoltaic panel, that is, the angle between the sunlight and its projected ray when the sun shines on the projective plane of the photovoltaic panel), the prior art generally uses geographic latitude to calculate and approximate The sunlight incidence angle calculated by this method has poor accuracy

[0010] To sum up, the photovoltaic power generation in the prior art has the defects of low output power per unit area, or poor accuracy of the calculated sunlight incident angle.

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