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CIGS thin film assembly of solar unmanned aerial vehicle and internal-external cascading method thereof

A technology of solar drones and thin-film modules, which is applied in electrical components, semiconductor devices, photovoltaic power generation, etc., can solve the problems of low open circuit voltage and loop loss, and achieve high open circuit voltage, small output current, and small current internal resistance loss Effect

Pending Publication Date: 2020-01-03
天津华鼎科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In view of this, the present invention aims to propose a solar unmanned aerial vehicle CIGS thin film module to solve the problem of circuit loss caused by the low open circuit voltage of the existing CIGS thin film solar cell unit and external series boost

Method used

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  • CIGS thin film assembly of solar unmanned aerial vehicle and internal-external cascading method thereof
  • CIGS thin film assembly of solar unmanned aerial vehicle and internal-external cascading method thereof
  • CIGS thin film assembly of solar unmanned aerial vehicle and internal-external cascading method thereof

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specific Embodiment 1

[0054] Firstly, through three picosecond laser scribing lines, the thin-film solar cell material layers from the transparent conductive layer 2 to the Mo back electrode layer 6, the ZnO window layer 3 to the CIGS absorbing layer 5, and the ZnO window layer 3 to the top electrode 1 are selectively transferred. In addition, the grooves of P1 scribe, P2 scribe, and P3 scribe are formed, wherein the P1 scribe channel has a width of about 50 μm and a depth of about 4 μm, and a P2 scribe channel has a width of about 200 μm and a depth of about 3.1 μm. , the width of the P3 scribed channel is about 50 μm, and the depth is about 0.6 μm; add insulating paste and conductive paste to the P1 scribed channel and P2 scribed channel respectively to realize the series connection between sub-cells; figure 2 As shown, the monolithically integrated battery cells are welded in parallel with bus bars; the final assembly is laminated and packaged. Specific steps are as follows:

[0055] (1) Laser...

specific Embodiment 2

[0068] Such as figure 1 As shown, three picosecond laser scribing lines are used to separate the thin-film solar cell material layers from the transparent conductive layer 2 to the Mo back electrode layer 6, from the ZnO window layer 3 to the CIGS absorber layer 5, and from the ZnO window layer 3 to the top electrode 1. Selective removal to form channels for P1 scribe, P2 scribe, P3 scribe,

[0069] Among them, the width of the P1 scribed channel is about 24 μm, and the depth is about 4 μm; the width of the P2 scribed channel is about 46 μm, and the depth is about 3.1 μm; the width of the P3 scribed channel is about 100 μm, and the depth is about 3.1 μm; Add insulating paste and conductive paste to P1 scribed channel and P2 scribed channel respectively to realize the series connection between sub-batteries; figure 2 As shown, the monolithically integrated battery cells are welded in parallel with bus bars; the final assembly is laminated and packaged. Specific steps are as ...

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Abstract

The invention provides a CIGS thin film assembly for a solar unmanned aerial vehicle and an internal-external cascading method thereof. The CIGS thin film assembly comprises laminated films and a plurality of sub-batteries arranged in parallel inside the laminated films, where each sub-battery is sequentially provided with a PI substrate, a Mo back electrode layer, a CIGS absorption layer, a CdS buffer layer, a ZnO window layer and a transparent conductive layer from bottom to top; a plurality of mutually independent top electrodes are uniformly distributed on each transparent conductive layer; one sides of the Mo back electrode layer, the CIGS absorption layer, the CdS buffer layer, the ZnO window layer and the transparent conductive layer are provided with penetrating insulating slurry;one sides of the ZnO window layer, the CdS buffer layer and the CIGS absorption layer are provided with penetrating P2 conductive slurry; and the Mo back electrode layer is exposed below a P2 scribingchannel. According to the CIGS thin film assembly for the solar unmanned aerial vehicle and the internal-external cascading method thereof, an internal-external cascading structure is adopted, an open-circuit voltage is high, current internal resistance loss is small, and output efficiency is higher.

Description

technical field [0001] The invention belongs to the technical field of solar unmanned aerial vehicles, and in particular relates to a solar unmanned aerial vehicle CIGS thin film module and an internal and external cascading method thereof. Background technique [0002] Due to its energy-saving and environmental protection, large coverage, and long blanking time, solar-powered drones have broad application prospects in reconnaissance and early warning, emergency disaster relief, forest fire prevention, surveying and mapping inspections, and signal relay. [0003] Traditional unmanned aerial vehicles are powered by lithium polymer batteries, and the energy density is low, which directly leads to the inability of unmanned aerial vehicles to stay in the air for a long time, which is greatly limited in practical applications. And if aviation kerosene with higher energy density is used as a power source, the improvement of endurance is also very limited. Aviation kerosene is a n...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L31/02H01L31/0445H01L31/18
CPCH01L31/0201H01L31/0445H01L31/188Y02E10/50Y02P70/50
Inventor 白子龙高凡白长春白峰瑞薛伊丹薛玉明冯少君
Owner 天津华鼎科技有限公司
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