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Plastic substrate thin-film battery with front electrode being led to other side of battery and preparation method

A technology of thin-film batteries and front electrodes, applied in circuits, electrical components, photovoltaic power generation, etc., can solve problems affecting the efficiency of batteries and components, limited heat resistance of the substrate, and large electrode shading area, so as to avoid loss of battery efficiency, Effect of reducing welding damage and reducing shading rate

Active Publication Date: 2020-08-28
SHANGHAI INST OF SPACE POWER SOURCES
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the limited heat resistance of the substrate, plastic substrate thin-film batteries are welded by thermocompression, and the battery electrodes are welded on the front side, which will result in a loss of about 5% of the efficiency of the battery; due to the wide welding strip of the battery, in order to reduce the thermocompression damage of the battery, The design width of the front electrode is not lower than the width of the ribbon, and the electrode shading area is large; therefore, it directly affects the efficiency of the battery and components

Method used

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  • Plastic substrate thin-film battery with front electrode being led to other side of battery and preparation method
  • Plastic substrate thin-film battery with front electrode being led to other side of battery and preparation method
  • Plastic substrate thin-film battery with front electrode being led to other side of battery and preparation method

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Embodiment 1

[0030] Step 1: Select 25m polyimide material as the substrate material of the plastic substrate thin-film solar cell, put the rolled polyimide substrate into the magnetron sputtering equipment, perform plasma purging, and clean the polyimide surface, and a silver / zinc oxide layer is sputtered in a high vacuum at 200° C. to form a back electrode 2 .

[0031] Step 2: preparation of back electrode stripping grooves 5: using a 1064 nm laser to etch the back electrode 2 to form several stripping grooves 5 with a width of 100 μm.

[0032] Step 3: Carry out mechanical microholes 6 in the back electrode stripping groove 5, and the diameter of the microholes 6 is 60 μm.

[0033] Step 4: Carry out dust removal and adsorption on the laser and mechanically processed materials to remove the residual dust on the materials.

[0034] Step 5: using PECVD (Plasma Enhanced Chemical Vapor Deposition, plasma enhanced chemical vapor deposition) equipment to prepare the battery active layer 3 . Th...

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Abstract

The invention discloses a plastic substrate thin-film battery with a front electrode being led to the other side of the battery and a preparation method. The battery comprises a plastic insulating substrate, a back electrode, an active layer, a first front electrode, a current collection grid line, an electrode channel and a second front electrode, wherein the back electrode, the active layer, thefirst front electrode and the current collection grid line are sequentially arranged on the plastic insulating substrate, and the second front electrode is arranged on the bottom surface of the plastic insulating substrate; the electrode channel penetrates through the plastic insulating substrate, the back electrode, the active layer and the first front electrode and is connected with the currentcollection grid line and the second front electrode. According to the invention, the shading rate of the grid line of the flexible battery can be reduced, thermocompression welding can be carried outon the reverse side to lead out the electrode, battery efficiency loss caused by thermocompression welding is avoided, reverse seamless splicing between batteries is realized, and the conversion efficiency of the batteries and a battery assembly is improved.

Description

technical field [0001] The invention relates to the field of photovoltaic solar cells, in particular to a thin-film battery with a plastic substrate leading the front electrode to the other side of the battery and a preparation method. Background technique [0002] With the increasing demand for flexible and light-weight solar cells, flexible thin-film battery modules have been widely used. In the process of preparing the battery array, it is necessary to carry out battery electrode lead-out and series-parallel welding. Due to the limited heat resistance of the substrate, plastic substrate thin-film batteries are welded by thermocompression, and the battery electrodes are welded on the front side, which will result in a loss of about 5% of the efficiency of the battery; due to the wide welding strip of the battery, in order to reduce the thermocompression damage of the battery, The design width of the front electrode is not less than the width of the ribbon, and the electro...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L31/0224H01L31/0445H01L31/18
CPCH01L31/022425H01L31/0445H01L31/18Y02P70/50
Inventor 马宁华蒋帅徐建明唐道远周丽华
Owner SHANGHAI INST OF SPACE POWER SOURCES
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