Solar cell spectral response measurement method, solar cell spectral response measurement instrument and light source attenuation compensation method for solar cell spectral response measurement instrument
A solar cell and spectral response technology, applied in the field of solar cell measurement devices, can solve problems such as not as expected, low conversion efficiency, and reduced efficiency
Inactive Publication Date: 2014-06-25
致茂电子(苏州)有限公司
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However, after these two solar cells are combined in the same solar cell module, because the current flow will be mutually limited during the series power generation process, whether it is an environment with strong blue light or strong red light, the two solar cells will Due to the difference in spectral response between each other, they will be restrained by each other, and the expected electric energy cannot be converted under any lighting conditions, resulting in the deterioration of the overall energy conversion efficiency after modularization, which is lower than the conversion efficiency of each single solar cell in the original
[0009] In other words, if only the total energy conversion efficiency is considered when classifying solar cells, in the subsequent modularization process, the efficiency reduction caused by the difference in individual spectral response will still be introduced, making the solar module formed by combining multiple solar cells Group performance degrades less than expected
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[0059] The foregoing and other technical contents, features and effects of the present invention will be clearly presented in the following detailed description of preferred embodiments with accompanying drawings.
[0060] The structure of the solar cell spectral response measuring instrument disclosed by the present invention is as follows: Figure 4 As shown, the LED light source used in this example, please refer to Figure 5 As shown, it is an LED element array 22, which has 10 sets of LED element groups 220, 221, ... 229, and each set of LED element groups 220, 221, ... 229 is configured with three red, green, and blue elements respectively. LED elements 220R, 220G, 220B, ... 229B, so as to calculate the respective responses of the solar cell 9 to be tested to red, green, and blue light; wherein, each LED element is as Figure 6 As shown, the current source 210 as an energy supply device is switched through a driving circuit 213 with a controllable switching element 211 ...
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The invention discloses a solar cell spectral response measurement method, a solar cell spectral response measurement instrument and a light source attenuation compensation method for the solar cell spectral response measurement instrument. The solar cell spectral response measurement method comprises the following steps of: irradiating a light emitting diode (LED) element group with multiple luminous bands serving as a light source to a solar cell to be measured, respectively lightening corresponding LED elements by using a group of test signal data comprising orthogonal and output power, converting the sensing value of the solar cell to be measured when being lightened by the test signal data into a group of measured electrical signals for outputting, separating out the components of the LED elements of the LED element group from the group of measured electrical signals by a processing device, and comparing the components with the output power corresponding to the group of test signal data and / or the luminous energy of the corresponding LED elements to acquire the wavelength response of each luminous band of the solar cell to be measured.
Description
【Technical field】 [0001] The invention relates to a solar cell measurement device and method, in particular to a solar cell spectral response measurement method, a measuring instrument and a light source attenuation compensation method. 【Background technique】 [0002] Due to global industrialization, excessive consumption of natural resources, and excessive carbon dioxide emissions, global warming is serious. Therefore, the development of alternative energy sources such as solar energy, wind power, hydraulic power, etc. and the improvement of utilization efficiency are more important for environmental protection. Among them, solar power generation is the most popular. At present, not only the industry is constantly trying to improve the conversion efficiency of solar cells, but also the conversion efficiency is often used as the standard for evaluating the quality of solar cells in the market. Therefore, a difference of 0.2% in conversion efficiency can lead to a significant...
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IPC IPC(8): H02S50/15
CPCY02E10/50
Inventor 王遵义李静粼林明杰
Owner 致茂电子(苏州)有限公司