Double-sided solar cell quantum efficiency test bench
A solar cell and quantum efficiency technology, which is applied in the monitoring of photovoltaic systems, photovoltaic power generation, electrical components, etc., can solve the problems of falsely high quantum efficiency testing, achieve the effects of reducing reflectivity, reducing the impact of reabsorption, and improving accuracy
Pending Publication Date: 2017-12-15
TAIZHOU LERRISOLAR TECH CO LTD
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Problems solved by technology
[0005] The purpose of the present invention is to provide a test bench for the quantum efficiency of double-sided solar cells to solve the problem of falsely high quantum efficiency testing caused by table reflection in the prior art
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[0021] A test bench for the quantum efficiency of bifacial solar cells, such as figure 1 , including a base 1 for placing double-sided solar cells, a thick wire 2, a copper-tin alloy bus wire 3, a copper-clad conductive wire 4 and a water cycle temperature control structure 5, the base 1 is made of black plastic material, and the thick wire 2 forms conductive contact with the back electrode of the double-sided solar cell, the copper-tin alloy bus wire 3 connects the thick wire 2 in series in sequence, and one end of the copper-clad conductive wire 4 is welded to the copper-tin alloy bus wire 3 after confluence, and the copper-clad conductive wire The other end of the wire 4 is welded with a connector, and the copper-clad conductive wire 4 is connected to the interface of the solar cell quantum efficiency tester through the connector. The inside of the base 1 is provided with a water circulation temperature control structure 5, the water circulation temperature control structur...
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Abstract
The invention provides a double-sided solar cell quantum efficiency test bench comprising a substrate for holding a double-sided solar cell, thick wires, a copper-tin alloy converging wire, a copper-covered conductive wire and a water circulation temperature control structure, the base is made of black plastics, the thick wire forms the conductive contact with the backside electrode of the double-sided solar cell, the copper-covered conductive wire serially connects the thick wires together, the copper-covered conductive wire is connected with an instrument interface, and the inside of the base is provided with the water circulation temperature control structure. The double-sided solar cell quantum efficiency test bench can greatly and effectively reduce the long-wave band reflectivity. The test bench makes the long-wave band reflectivity be less than 5% due to the low reflectivity, effectively reducing the impact of re-absorption of the cell transmitted light due to bench top reflection, and improving the accuracy of the quantum efficiency test.
Description
technical field [0001] The invention relates to a testing platform for the quantum efficiency of double-sided solar cells. Background technique [0002] A solar cell is a device that converts light energy into electrical energy by using the photovoltaic effect. The substrate of the current mainstream commercial battery is crystalline silicon material. High-efficiency p-type crystalline silicon cells with conversion efficiencies exceeding 21% have been commercialized. Generally, such batteries are of single-sided structure. The front of this battery uses an "H"-shaped electrode pattern, and the back uses Ag electrodes for welding at the front busbar position, and the rest of the back covers the entire surface of the Al layer. Under this structure, the cell structure is single-sided. [0003] To make a p-type PERC cell into a double-sided structure, the Al electrode on the back side needs to be made into a grid line shape, and only a local contact is formed. Cover with a ...
Claims
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Login to View More IPC IPC(8): H02S50/10
CPCH02S50/10Y02E10/50
Inventor 陈军孙飞龙李华吴建军
Owner TAIZHOU LERRISOLAR TECH CO LTD