Simulating light source device and simulating method for solar battery attenuation test

Abstract

The invention discloses a simulating light source device and a simulating method for a solar battery attenuation test. The simulating light source device comprises a lamp box, a simulating solar lamp, a temperature sensor, an irradiatometer, a refrigeration compressor, a cooling pipe and an electric control panel, wherein the simulating solar lamp, the temperature sensor, the irradiatometer and the cooling pipe are arranged in the lamp box; a refrigeration water circulation cooling device is arranged outside the lamp box; the refrigeration water circulation cooling device is controlled by the temperature sensor; and the simulating solar lamp is controlled by the irradiatometer, and the illumination intensity of the simulating solar lamp is 0.5-2.0kW / m<2>.

Description

technical field [0001] The invention relates to a device and method for simulating a light source for attenuation testing of solar cells, belonging to the technical field of photovoltaics. Background technique [0002] Illumination will cause the performance of the battery to attenuate continuously, and finally reach the saturation value: light or current injection causes boron and oxygen in the silicon wafer to form a boron-oxygen complex, thereby reducing the minority carrier lifetime and causing a decrease in the battery conversion rate. However, after annealing, the minority carrier lifetime It can be recovered again, and its possible reaction is Bs+2Oi→BsO2i BsO2i→Bs+2Oi; [0003] The attenuation of the output power of photovoltaic modules can be divided into two stages when the previous light attenuation is performed on the cells: [0004] The first stage can be called the initial light-induced attenuation. In the first stage, the output power of photovoltaic modules ...

AI Technical Summary

Problems solved by technology

[0008] (1) The quality of the silicon wafer is poor, resulting in a relatively large initial light-induced attenuation of the battery;

[0009] (2) The module manufacturing process is unreasonable, and there are quality problems such as cell cracks, poor EVA cross-linking degree, delamination, and poor welding;

[0010] (3) Some component manufacturers have inaccurate power tests or intentionally falsely report output power

[0017] 2. Although light attenuation was previously a method for solar cell attenuation testing to simulate light source devices, before the quality of silicon wafers has not been effectively improved, using this method is an effective measure to solve the problem of initial light-induced attenuation of photovoltaic modules

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