Wholesale of fully automatic multi-channel solar cell and module stability testing system

Introduction

Multi channel solar cell and module stability testing systemIt is a powerful and comprehensive multi-channel solar cell and module stability testing system tailored for researchers of perovskite solar cells. The commonly used light source is a long-life white LED light that can output equivalent light intensity of 1-4 suns. The battery can be temperature controlled (-40-150 ℃) and the environmental atmosphere (N, dry air, constant temperature and humidity, etc.) in various ways. It can simultaneously conduct long-term stability performance testing on multiple groups of batteries. In addition to the traditional MPPT mode, it also adds constant voltage (such as open circuit voltage) and constant current aging (such as short circuit current) modes to increase the flexibility of stability research, and integrates powerful data analysis software to view and compare various performance indicators of different samples in real time.

Application Fields and Target Users

The multi-channel solar cell and module stability testing system is applied in the field of solar cell performance testing, providing multi-channel parallel testing, data analysis/storage for all testing channels, and obtaining battery data. Help testers improve testing efficiency and reduce the workload of testing analysis.

systematic review

The system consists of hardware and software components. The hardware includes an upper computer, a high-precision electronic source meter, and an LED light source. The battery to be tested is provided by the customer, and the system includes softwareInstallation package.

The system testing is mainly divided into four main testing interfaces: I-test, MPPT tracking, V-t test, and I-t test. Through N-test forward and backward scanning, four key performance indicators of the battery, including Voc, 15C, FF, and PCE, are calculated under the premise of manually inputting the battery illumination area and optical power density. One group of forward scanning and one group of reverse scanning are recorded simultaneously. Regularly conduct repeated N tests after a fixed time interval. At fixed time intervals, setting the battery to several working modes such as MPPT, V-t, 1-t, etc., the aging effect of perovskite solar cells varies depending on the working mode. What we see is MPPT mode, because MPPT simulates the state where solar cells maintain power output under real application conditions. After 100% completion of the aging test for the set total duration, the analysis software can choose to provide the changes in performance parameters obtained from both forward and reverse scans with aging time, thus including the errors caused by the hysteresis effect of perovskite solar cells. You can also choose to provide P-t data obtained in MPPT, V-t, and I-t modes.

Users can choose different configurations according to their situation