Solar cell testing instrument with linear pulse light source

Abstract

The solar cell testing instrument with linear pulse light source has pulse xenon lamp light source, constant voltage electronic load circuit, and computerized measuring and controlling system for process control and data processing. The optical path system has linear light source. Two paraboloid reflectors and two planar reflectors combined together to result in homogeneous simulating light and small volume. The present invention solves the problem of temperature raise in stable simulator test, has easy-to-manufacture paraboloid reflectors and perfect measuring and controlling circuit, and can perform the accurate measurement of single solar cell.

Description

Technical field: [0001] The invention relates to a single solar battery tester, in particular to a single solar battery tester in the form of a pulse line light source, which can measure the volt-ampere characteristics of a single solar battery and further obtain various electrical performance parameters. The invention belongs to the technical field of solar cell testing. Background technique: [0002] The single solar battery tester is generally composed of several parts such as solar simulator, electronic load and computer data processing system as a complete set or supporting equipment. Among them, the solar simulator has two types: steady state and pulse type, and the early foreign single test equipment All are steady-state, simulating sunlight on the battery under test, and the performance of the battery is measured by the test circuit. The biggest disadvantage of this tester is that it is inconvenient to measure and control the temperature of the battery under test. A...

AI Technical Summary

Problems solved by technology

The biggest disadvantage of this tester is that the temperature of the battery under test is inconvenient to measure and control. Although a constant temperature water system is added, the factor that affects the performance of the battery is essentially the temperature of the PN junction of the battery. Therefore, although the back electrode of the solar cell is in contact with the constant temperature water The contact of the system is kept at a constant temperature, but the temperature of the PN junction on the upper surface of the battery gradually increases with the irradiation of a constant light source, which will inevitably affect the accuracy of the test results

Foreign single test equipment generally uses point light sources and parabolic reflection as the simulated light source, which requires high processing precision for parabolic spheres.

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