Electrical performance test device of solar cell

Abstract

The invention provides an electrical performance test device of a solar cell. The electrical performance test device comprises an upper test table and a lower test table, wherein the upper test tablecomprises a copper conductive wire group, a flexible spring, convergence copper wires, a main body frame and a lifting device, the copper conductive wire group is used for testing current and voltageof a front surface of a battery piece, the flexible spring is used for adjusting tension forces of copper conductive wires, the convergence copper wires are respectively connected with current-voltagecopper conductive wires, the lifting device is connected with a motor, the lower test table comprises a substrate, a copper conductive strip, convergence copper wires and absorption holes, and the convergence copper wires are respectively connected with the current-voltage copper conductive strips. By the device, the problem of virtual short-circuit test caused by reflection of tabletop can be prevented, and the problem of conductive contact between electrodes on a front surface and a back surface of a double-side battery is also solved; and by integration of an automatic transmission device,the practicability of electrical performance test under the condition of battery yield is solved.

Description

technical field [0001] The invention relates to a device for testing the electrical performance of a solar cell, which belongs to the field of solar cells. Background technique [0002] A solar cell is a device that converts light energy into electrical energy by using the photovoltaic effect. At present, the substrate of the mainstream commercial battery is crystalline silicon material, and the advanced PERC process is adopted on the P-type silicon crystal. Generally, this kind of battery has a single-sided structure, and the main grid is the mainstream 3-5 grid. If the P-type PERC battery is to be made into a double-sided structure, the traditional busbars will be canceled at the same time for the front electrode and the back electrode, and it will be designed as no busbar or multiple thin busbars. With such a structure, conductive contacts are formed only on the fine grids. Then the busbar-pressed probe row structure of the traditional solar cell electrical performance ...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a test device for testing the efficiency of single-sided and double-sided zero-busbar / multi-busbar solar cells. The problem of conductive contact of the front and back electrodes, through the integration with the automated transfer device, solves the feasibility of testing the electrical performance of this type of battery under mass production conditions

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