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Electrical performance test device of solar cell

A technology for testing solar cells and electrical properties, applied in the field of solar cells, can solve problems such as conductive contact and false short-circuit current testing, and achieve the effects of stable electrical contact and accurate testing.

Pending Publication Date: 2018-06-08
LONGI SOLAR TECH (TAIZHOU) CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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

Method used

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  • Electrical performance test device of solar cell
  • Electrical performance test device of solar cell
  • Electrical performance test device of solar cell

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Embodiment 1

[0033] Such as figure 1 , figure 2 and image 3 , a test device for testing the electrical performance of single-sided double-sided zero busbar / multi-busbar solar cells, including two major components: an upper test bench and a lower test bench, wherein the upper test bench includes copper for testing the front current and voltage of solar cells Conductive wire group 1, telescopic spring for adjusting the tension of copper conductive wire 2, upper current converging copper wire connected to all current copper conductive wires 3, upper voltage converging copper wire connected to all voltage copper conductive wires 4, adjusting spring tension Insulating screws 5, a main body frame 6 and a lifting device 7 connected to a motor. The lower test bench includes a test base 8 made of a black insulating low-reflectivity material with a black substrate, a lower copper conductive strip group 9, a lower current-combining copper wire 12 connecting all the current copper conductive strip...

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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 ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L21/66H01L31/18
CPCH02S50/10Y02E10/50Y02P70/50
Inventor 孙飞龙陈军唐喜颜赵许飞吴建军李华
Owner LONGI SOLAR TECH (TAIZHOU) CO LTD
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