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Method for reducing packaging power loss of black silicon battery pack

A technology of battery components and power loss, applied in the field of solar cells, to achieve the effect of reducing power loss, reducing power loss, and improving CTM value

Active Publication Date: 2019-03-01
HUNAN RED SUN PHOTOELECTRICITY SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The above method reduces the influence of different currents on power loss to a certain extent, but does not fundamentally solve the influence of current on the power of black silicon battery modules

Method used

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  • Method for reducing packaging power loss of black silicon battery pack
  • Method for reducing packaging power loss of black silicon battery pack
  • Method for reducing packaging power loss of black silicon battery pack

Examples

Experimental program
Comparison scheme
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Embodiment 1

[0024] Such as figure 2 and image 3 As shown, the method for reducing the power loss of black silicon cell assembly packaging in this embodiment is to measure the short-wave current of each cell in the cells with the same efficiency or total current classification, and compare the short-wave current of the cells with the short-wave current within the same preset range The chips are uniformly packaged, that is, the power in the same package component will not limit each other, thereby increasing the CTM value (the percentage of the component output power and the total power of the battery chip) and reducing power loss.

[0025] In this embodiment, when measuring the current of the cell, the short-wave light source selects a light source with a wavelength of 300-500nm or any light source with a similar spectrum, and the long-wave light source selects a light source with a wavelength in the range of 500-1100nm or any light source with a similar spectrum. The short-wave light s...

Embodiment 2

[0027] The difference between the present embodiment and the first embodiment lies in the selection of the light source in the current measurement. In this embodiment, when measuring the current of the cell, a full-spectrum light source is selected, and different filters are installed at corresponding positions to realize short-wave and long-wave light outputs respectively. Specifically, the wavelength of the full-spectrum light source is in the range of 300-1100nm, a filter with a wavelength of 300-500nm is installed at the position of the short-wave light source, and a filter with a wavelength of 500-1100nm is installed at the position of the long-wave light source.

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Abstract

The invention discloses a method for reducing packaging power loss of a black silicon battery pack. Short wave currents or long wave currents of various battery pieces are measured in battery pieces with the same efficiency or step total current, and the short wave currents or the long wave currents are uniformly packaged in the battery pieces in the same preset range. The method provided by the invention has the advantages that the packaging power loss of the black silicon battery pack is reduced and the operation is simple and convenient and the like.

Description

technical field [0001] The invention mainly relates to the technical field of solar cells, in particular to a method for reducing power loss in black silicon cell assembly packaging. Background technique [0002] Compared with ordinary polycrystalline silicon cells, black silicon cells have better absorption characteristics and lower reflectivity. The reflectivity advantage in the short-wavelength range is more obvious, and it has higher short-wave external quantum efficiency. Therefore, short-wave incident light generates current in the contribute more to the overall photogenerated current. Due to the unique spectral response characteristics of black silicon cells, the current is more sensitive to short wavelengths than conventional cells. Even with the same current, the composition of long-wave and short-wave currents is different. When batteries with different current compositions are packaged together, the light transmittance of packaging glass and EVA in the short-wave...

Claims

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Application Information

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IPC IPC(8): H01L31/048H02S50/15
CPCH01L31/048H02S50/15Y02E10/50
Inventor 赵增超赵保星谢湘州黄嘉斌
Owner HUNAN RED SUN PHOTOELECTRICITY SCI & TECH