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Series flexible thin film solar cell module and making method thereof

A technology for solar cells and flexible thin films, applied in the field of solar cells, can solve the problems affecting cell efficiency, cell dead zone, complicated processes, etc., and achieve the effects of easy process control, low manufacturing cost, and simple process

Active Publication Date: 2017-06-27
BEIJING SIFANG CRENERGEY OPTOELECTRONICS TECH CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The substrates of thin-film solar cells can be divided into rigid substrates (such as glass) and flexible (such as thin metal) substrates. Solar cells with flexible substrates are generally divided into two types. One is to divide the overall battery block into Each small battery unit connected in series or in parallel, the substrate of this solar cell cannot be separated; foreign patents (US6858461 and JP2003003956) disclose a method for obtaining series or parallel battery units on the substrate by means of laser etching; but This technology is limited by laser or mechanical scribing methods. For example, laser etching will cause a short circuit in the battery, and mechanical scribing will increase the dead zone of the battery and affect battery efficiency.
The other is to use the same substrate to prepare batteries, and then use interconnection technology to connect small batteries to form a whole module. This method has certain feasibility, but there are also shortcomings, such as difficult to achieve ohmic contact, complicated process, etc.; Domestic patents CN202332901U and CN102386251A respectively relate to flexible connection and connection methods of different materials
In addition, the patent CN201210483922 discloses a method for preparing interconnected flexible solar cells, which solves the problem of ohmic contact by overlapping and pressing small flexible solar cells, but is limited by the overlapping structure and lamination factors of the small cells themselves. , the separation of the battery cells cannot be achieved

Method used

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  • Series flexible thin film solar cell module and making method thereof
  • Series flexible thin film solar cell module and making method thereof
  • Series flexible thin film solar cell module and making method thereof

Examples

Experimental program
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example 1

[0067] see figure 1 , figure 2 , image 3 and Figure 4 , a tandem flexible CIGS thin-film solar cell, including 24 flexible solar cell units 101, the flexible solar cell includes a flexible cell basic unit 101, a conductive adhesive tin-copper strip 201, a conductive welding bus strip 102, adjacent In the basic unit of the flexible solar cell, the current collection is realized through the grid lines (main grid line 301, thin grid line 302), and then the conductive adhesive tin copper strip 201 is bonded to the position of the main grid line, and the length of the lead is 15mm, and the next unit The substrates of the flexible solar cells 202 are connected to form a series structure, thereby forming a series of flexible solar thin film cells. The flexible solar thin film cells include a flexible metal substrate 401 and a power generation film layer 402 .

[0068] In this embodiment, the laminated packaging material of the flexible solar cell adopts ethylene-octene copolyme...

example 2

[0071] The same or similar technical content in this embodiment as in Embodiment 1 will not be described one by one in this embodiment.

[0072] In this embodiment, the current collection part of the basic unit of the flexible solar cell is still collected through the grid line. When converging with the current of the adjacent battery unit, the conductive welding bus strip 102 is used to realize the connection between the aluminum strip and the main grid through infrared heating. Bonding of wire 301.

[0073] In this embodiment, the lamination packaging process of the battery adopts a pressure of 100 kaPa and vacuumizes for 10 minutes, and the materials used are the same as those in Embodiment 1.

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Abstract

A series flexible thin film solar cell module and a making method thereof are disclosed. A flexible solar cell comprises at least one flexible solar cell unit. The flexible solar cell unit includes a cell substrate of a flexible metal material, a power generation thin film layer, an adhesive layer, and a water blocking layer. The power generation thin film layer has grid lines for silk-screen printing, which are subjected to conductive convergence through a bonding bus bar and connected with a metal substrate of another flexible solar cell unit to form a series structure. The invention also discloses a method for making the series flexible copper indium gallium selenide thin film solar cell. According to the invention, the process is simple to realize and free from environmental influence, is also safe and reliable, and can be used in many industries.

Description

technical field [0001] The invention belongs to the technical field of solar cells, and relates to a flexible copper indium gallium selenide (hereinafter referred to as CIGS) thin-film solar cell assembly and a manufacturing method thereof, in particular to a tandem flexible solar cell and a manufacturing method thereof. Background technique [0002] Energy and environmental issues have been the focus of attention in the world in recent years. In order to achieve sustainable development of energy and the environment, countries around the world have focused on photovoltaic power generation. In the existing photovoltaic solar market, solar cells that have been commercially applied mainly include crystal Silicon solar cells and thin-film solar cells; thin-film solar cells include polycrystalline and microcrystalline silicon-based thin-film cells, copper indium selenide thin-film cells, cadmium telluride thin-film cells, multi-junction gallium arsenide thin-film cells and organic...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L31/0392H01L31/05H01L31/18
CPCH01L31/03928H01L31/0504H01L31/188Y02E10/541Y02P70/50
Inventor 张宁余新平李宝瑛张龙李爽徐会杰
Owner BEIJING SIFANG CRENERGEY OPTOELECTRONICS TECH CO LTD
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