Industry trends

Current-voltage (I-V) characterization of solar cells is critical to deriving important parameters about their performance, including maximum current (Imax) and voltage (Vmax), open-circuit voltage (Voc), short-circuit current (Isc), and efficiency ( n). The multi-group solar cell IV test system scheme uses the international standard AAA level solar simulator to replace the traditional halogen lamp, xenon lamp and other light sources, which can completely simulate the solar spectrum in space and on the ground, and solve the matching problem of the incident spectrum of the solar cell in the laboratory test; and The battery IV characteristic test instrument adopts the high-precision domestic source measure unit SMU of precise Instruments, with ultra-wide photocurrent and dark current measurement capabilities from 100fA to 10A, which can cover most battery power tests. Combined with precision multi-channel switching switches and customized fixtures for customer battery electrode shapes, continuous IV testing of up to 60 battery cells can be achieved, greatly improving test accuracy, repeatability, and efficiency.

The test program of Precise Instrument can test the IV characteristics of each battery cell independently or sequentially through the self-developed software, display the IV characteristic curve and parameters such as Isc, Voc, Pmax, FF, η and battery surface temperature, and each battery cell The test results can be saved in an EXCEL file, which can be used for statistical analysis on the uniformity distribution of the battery surface.

Parameters to test：

Open circuit voltage (Voc)

Short circuit current (Isc)

Maximum power (Pmax)

Fill factor (FF)

Conversion efficiency ((η)

Required Instrument List：

S-type domestic source measure unit

solar simulator

S-type software

University related majors：

materials, chemistry

New Energy, Optoelectronics Major