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Solar cell output measurement tool and solar cell output measurement method

A solar cell and current measurement technology, applied in the parts, circuits, measuring electricity and other directions of electrical measuring instruments, can solve the problems of deviation in contact resistance, large deviation in thickness, and inconstant contact area between probes and finger electrodes. , to achieve the effect of reducing deviation and stabilizing output measurement

Active Publication Date: 2016-06-22
DEXERIALS CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] However, finger electrodes in solar cells are mostly formed by screen-printing Ag paste and then sintering, and the deviation in the thickness direction is large.
Therefore, even with this proposed technology, there is a problem that the contact area between each probe and the electrode finger is not constant, and the contact resistance varies, making it difficult to obtain an accurate output value.

Method used

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  • Solar cell output measurement tool and solar cell output measurement method
  • Solar cell output measurement tool and solar cell output measurement method
  • Solar cell output measurement tool and solar cell output measurement method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0153] On the contact surface of the probe with a round tip (diameter 1.5mm), by cutting, an angle of 60°, an average depth of 45μm, and an average interval between adjacent circles in the concentric circle (average interval) are formed concentrically. ) for a 60μm groove ( Figure 17A as well as Figure 17B ).

[0154] Such as Figure 18 As shown, the probes formed with the grooves were arranged in a staggered manner in the area of ​​the cell 1 with a side length of 156, arranged in two rows, and fixed by embedding in a resin material (stent). The bases (sockets) of the probes arranged in this way were soldered to copper wires for each row and bundled to produce an output measurement jig for a solar battery cell.

[0155] The row on one side of the bundle is the current measurement terminal, and the row on the other side is the voltage measurement terminal. These terminals are used by connecting them to a solar simulator.

Embodiment 2

[0157] In Example 1, the average interval (average pitch) between adjacent circles in the concentric circles of the grooves of the probe 4 was changed to 120 μm, and in the same manner as in Example 1, an output measurement jig for a solar battery cell was produced. .

[0158] In addition, the average depth of the grooves became 95 μm.

Embodiment 3

[0160] In Example 1, the average interval (average pitch) of adjacent circles in the concentric circles of the grooves of the probe 4 was changed to 250 μm, and in the same manner as in Example 1, an output measurement jig for a solar battery cell was produced. .

[0161] In addition, the average depth of the grooves became 210 μm.

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Abstract

A solar cell output measurement tool having a current measurement terminal that is formed through the arrangement of a plurality of probe pins and is for measuring a current characteristic of a solar cell, a voltage measurement terminal that is formed through the arrangement of a plurality of probe pins and is for measuring a voltage characteristic of a solar cell, and a holder for holding the current measurement terminal and voltage measurement terminal in parallel, wherein on each of the plurality of probe pins of the current measurement terminal and voltage measurement terminal, the surface of a contact part that comes into contact with a finger electrode of the solar cell has a plurality of grooves.

Description

technical field [0001] The present invention relates to an output measurement jig for a solar battery cell and an output measurement method for a solar battery cell. Background technique [0002] Conventionally, as a measurement jig for measuring electrical characteristics of a solar cell, a measurement jig having a plurality of probes in contact with bus bar electrodes of a solar cell is generally used (for example, see Patent Documents 1 and 2). [0003] In recent years, in order to reduce the number of man-hours for manufacturing solar cells and at the same time reduce the amount of electrode materials such as Ag paste used to reduce manufacturing costs, it has been proposed not to provide bus bar electrodes, but to use conductive bonding It is a process method in which the film and the finger electrode are directly connected to the solder ribbon as the internal wiring. Even in solar cells having such a structure without bus bars, the current collection efficiency is equ...

Claims

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Application Information

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IPC IPC(8): H02S50/10
CPCH02S50/10Y02E10/50G01R1/0416G01R1/06738G01R1/073G01R31/2601H01L31/04
Inventor 樋口明史奥宮秀昭
Owner DEXERIALS CORP
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