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Front packaging membrane of solar battery and application thereof

A technology of solar cells and front film, which is applied in the direction of circuits, photovoltaic power generation, electrical components, etc., can solve the problems of limiting the single working time of drones, the low light absorption efficiency of photovoltaic cells, and the difficulty in meeting the power supply demand, so as to improve the cost Membrane effect, optimized arrangement order, effect of increased light transmittance

Active Publication Date: 2015-12-02
DONGJUN NEW ENERGY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, there is still a problem with using PTFE film as the pre-encapsulation film, because the light transmittance of PTFE itself is low, usually only about 40%, which leads to the low light absorption efficiency of photovoltaic cells in the above technology, and it is difficult to meet the power supply demand.
Although among various energy storage devices, lithium batteries have a relatively suitable mass-to-energy ratio and mass-to-power ratio, but for drones, the performance of lithium batteries directly determines its ability to last for drones, which also means It has become a bottleneck that limits the single working time of drones

Method used

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  • Front packaging membrane of solar battery and application thereof

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Effect test

Embodiment 1

[0039] The film before solar cell encapsulation described in this embodiment comprises a polytetrafluoroethylene modified film with a thickness of 50 μm and a MgF film with a thickness of 95 nm formed by sequential vapor deposition on the modified polytetrafluoroethylene film. 2 Thin film, TiO with a thickness of 650nm 2 -ZrO 2 -La 2 o 3 Mixture film, and Al with a thickness of 75nm 2 o 3 film.

[0040] The preparation method of the above solar cell encapsulation film comprises the following steps:

[0041] (1) Mix kerosene with a mass ratio of 4:0.1 and sodium perfluorooctanoate evenly to form a composite solvent; in the kerosene, the content of isoparaffins is 90wt%, and the content of normal paraffins is 8wt%;

[0042] (2) Add the composite solvent of step (1) into the polytetrafluoroethylene powder, stir at a constant temperature of 14°C at a speed of 20r / min for 0.5h, and then mature in a nitrogen atmosphere at a constant temperature of 24°C for 10h , to get cooked...

Embodiment 2

[0054] The film before solar cell encapsulation described in this embodiment comprises a polytetrafluoroethylene modified film with a thickness of 75 μm and a MgF film with a thickness of 90 nm formed by sequential vapor deposition on the modified polytetrafluoroethylene film. 2 Thin film, TiO with a thickness of 500nm 2 -ZrO 2 -La 2 o 3 Mixture film, and Al with a thickness of 80nm 2 o 3 film.

[0055] The preparation method of the above solar cell encapsulation film comprises the following steps:

[0056] (1) mixing kerosene and toluene with a mass ratio of 5:0.1 to form a composite solvent; in the kerosene, the content of isoparaffins is 86wt%, and the content of normal paraffins is 11wt%;

[0057] (2) Add the composite solvent of step (1) to the polytetrafluoroethylene powder, stir at a constant temperature of 10°C at a speed of 50r / min for 0.5h, and then mature in a nitrogen atmosphere at a constant temperature of 32°C for 12h , to get cooked material;

[0058] Wh...

Embodiment 3

[0069] The film before solar cell encapsulation described in this embodiment comprises a polytetrafluoroethylene modified film with a thickness of 100 μm and a MgF film with a thickness of 93 nm formed by sequential vapor deposition on the modified polytetrafluoroethylene film. 2 Thin film, TiO with a thickness of 800nm 2 -ZrO 2 -La 2 o 3 Mixture film, and Al with a thickness of 70nm 2 o 3 film.

[0070] The preparation method of the above solar cell encapsulation film comprises the following steps:

[0071] (1) mixing kerosene and polyalkenyl succinimide with a mass ratio of 4.5: 0.1 to form a composite solvent, then adding bisphenol A epoxy resin to the composite solvent to obtain a mixture;

[0072] Wherein, the mass ratio of the bisphenol A type epoxy resin and the kerosene in the composite solvent is 2:5; in the kerosene, the content of isoparaffins is 87wt%, and the content of normal paraffins is 9wt%;

[0073] (2) Add the mixture of step (1) to the polytetrafluor...

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Abstract

The invention provides a front packaging membrane of a solar battery and application thereof. The front packaging membrane comprises a teflon modified membrane, a MgF2 thin film, a TiO2-ZrO2-La2O3 mixture film, and a AL2O3 film, wherein the MgF2 thin film, the TiO2-ZrO2-La2O3 mixture film, and the AL2O3 film are successively formed on the teflon modified membrane by vapor plating. The teflon modified membrane is used as a base of the front packaging membrane of the solar battery and thus the high light transmitting rate is realized, wherein the light transmitting rate under the 300 to 1200nm can reach over 90.5%. Moreover, the front packaging membrane has excellent high-temperature-resistant, wearing-resistant, and weather-resistant performances and good mechanical property, so that the membrane can adapt to various extreme conditions that may be faced by an unmanned aerial vehicle, so that the working environment requirements of the unmanned aerial vehicle can be met completely.

Description

technical field [0001] The invention relates to a solar cell packaging front film and its application in a weather-resistant solar cell for drones, belonging to the technical field of polymer materials. technical background [0002] In the context of global warming and deterioration of the ecological environment, looking for alternatives to fossil energy and improving the energy structure have become the focus of attention of all countries. Among many clean energy alternatives, solar energy is considered to be one of the energy sources with the greatest development potential in the future due to its cleanliness, safety, and sufficient resources, and has received great attention and support from countries all over the world. For the development and utilization of solar energy, the most representative is solar cells. In the solar cell family, flexible thin-film solar cells have the advantages of lightness, softness, and thinness, and have better temperature adaptability, low l...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L31/048
CPCY02E10/50H01L31/0481
Inventor 郑海军张亦弛夏平程晓龙王继存
Owner DONGJUN NEW ENERGY CO LTD
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