A temperature control device for accelerated aging experiments of solar cells

Abstract

The invention discloses a temperature control device for a solar cell accelerated aging test. During operation, simulated sunlight is transmitted into a cavity from a transparent glass cover plate and irradiates on the upper surface of a solar cell, and even temperature distribution between the illuminated face and the shady face of the solar cell is guaranteed through cross ventilation above and below the solar cell. Simultaneously, temperatures of the illuminated face and the shady face of the solar cell are determined through a temperature determining device, through mutual matching of a heating device with a cooling device, temperatures at all positions of the solar cell can be maintained near a set test temperature value to guarantee the reliability of experimental data, and structural damages or functional invalidation caused by an over-large temperature difference between the illuminated face and the shady face of the solar cell and uneven heat of all positions is avoided.

Description

technical field [0001] The invention relates to the technical field of photovoltaic module auxiliary equipment, in particular to a temperature control device for accelerated aging experiments of solar cells. Background technique [0002] In the current production and processing of solar cells, in order to obtain the performance changes of solar cells during long-term outdoor use, it is necessary to test the corresponding parameters and changes of solar cells before leaving the factory to predict whether they have The service life of 20-25 years in the open air environment. In view of the slow changes in the performance parameters of solar products, it is difficult to obtain sufficient performance data in a short period of time. Therefore, manufacturers usually adopt high-intensity radiation on solar cells by simulating sunlight and accelerated aging experiments with higher temperatures. The performance parameters were determined accordingly. [0003] Usually, during the ab...

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Problems solved by technology

[0003] Usually, during the above-mentioned accelerated aging experiment, the simulated sunlight is irradiated with high intensity on one side of the solar cell, and the long-term high-intensity radiation will inevitably cause the temperature difference between the light-receiving surface and the backlight surface of the solar cell to be too large, which will cause the battery Thin film failure; at the same time, uneven heating of various parts of the solar cell will also cause different expansion degrees of different parts, which will lead to structural damage or performance degradation of the battery, and even cause the overall failure of the solar cell

[0004] Therefore, how to avoid the excessive temperature difference between the light-receiving surface and the backlight surface of the solar cell during the accelerated aging experiment, and to make all parts of the solar cell heated evenly is an important technical problem that those skilled in the art need to solve at present.

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