Solar cell module with display function

Abstract

This invention relates to a solar cell module with display functionality, comprising an upper layer of ultra-white low-iron tempered glass, a middle layer of solar cells and a backsheet, and a bottom layer of electronic paper. EVA encapsulation layers are respectively provided between the tempered glass and the solar cells, and between the solar cells and the backsheet. The bottom electronic paper is bonded to the backsheet, and the entire module is finally encapsulated with a frame. The module includes an energy storage system; the electricity generated by the module charges a battery via a controller, while the energy required for the electronic paper to operate is provided by the battery in the energy storage system. A key feature of this invention is that the electronic paper on the back of the module has a display function, capable of displaying patterns and text, serving both aesthetic and promotional purposes.

Description

Technical Field

[0001] This invention relates to solar cell modules, and more particularly to a solar cell module with a display function, belonging to the field of solar energy application technology. Background Technology

[0002] With traditional energy sources becoming increasingly depleted, solar energy, as a clean, pollution-free, and renewable energy source, has received increasing attention in recent years, and its applications are becoming more widespread. Solar power generation has many advantages, such as being economical and environmentally friendly, with inexhaustible solar energy; short construction cycles, not limited by the geographical distribution of resources, and able to generate electricity near the point of use; furthermore, solar power generation units can be perfectly integrated with buildings and public facilities. The most basic unit of solar photovoltaic power generation is the solar cell module, which is generally composed of a certain number of solar cells connected in series. A solar cell is a semiconductor device that directly converts light energy into electrical energy.

[0003] Solar cell modules have been widely used in many fields, but in terms of both function and appearance, existing solar cell modules are still relatively monotonous, generally only capable of generating electricity. Adding other functions to solar cell modules, enabling them to not only generate electricity but also achieve other effects, is a problem worthy of research. Summary of the Invention

[0004] To address the above problems, the purpose of this invention is to provide a solar cell module with a display function. This module can both generate electricity through photoelectric conversion and has a display function, making it particularly suitable for some BIPV (Building Integrated Photovoltaics) applications.

[0005] The present invention is achieved as follows: a solar cell module with display function includes an upper layer of ultra-white low-iron tempered glass, a middle layer of solar cells and a backsheet, and a bottom layer of electronic paper. EVA (ethylene-vinyl acetate copolymer) encapsulation layers are respectively provided between the tempered glass and the solar cells, and between the solar cells and the backsheet. The bottom electronic paper is bonded to the backsheet and finally encapsulated with a frame.

[0006] The solar cell module with display function uses monocrystalline silicon, polycrystalline silicon, or amorphous silicon thin-film solar cells.

[0007] The solar cell module with display function uses a backsheet material such as tempered glass, TPT, PET, or TPE composite film.

[0008] The aforementioned solar cell module with display function includes an energy storage system, comprising a controller and a battery. The electricity generated by the module charges the battery of the energy storage system via the controller, while the electronic paper is powered by the battery. [A connection diagram of the charging energy storage system, battery, and controller is provided.] The present invention provides a solar cell module with display function. The front of the module can normally absorb sunlight to generate electricity. On the back of the module, due to the addition of electronic paper with display function, the back of the module can be used as a display screen. For example, the back can display patterns and text, which can play a good role in aesthetic decoration and publicity. Especially for some public places, such as bus stops, shopping malls, etc., it can be used for advertising, product information introduction, information announcements, etc. Attached Figure Description

[0009] Figure 1 Cross-sectional view of a solar cell module with display function Figure 2 Schematic diagram of the energy storage system attached to the solar cell module Figure 1 In the middle, 1. tempered glass, 2. EVA, 3. solar cell, 4. backsheet, 5. electronic paper. Detailed Implementation

[0010] To further understand the technical features and content of the present invention, the following description is provided in conjunction with the accompanying drawings.

[0011] See Figure 1 A solar cell module with display function includes an upper layer of ultra-white low-iron tempered glass 1, a middle layer of solar cells 3 and a backsheet 4, and a bottom layer of electronic paper 5. An EVA (ethylene-vinyl acetate copolymer) encapsulation layer 2 is provided between the tempered glass and the solar cells, and between the solar cells and the backsheet. The bottom layer of electronic paper is bonded to the backsheet.

[0012] The process steps for fabricating the aforementioned solar cell module with display function are as follows: First, a clean tempered glass plate is placed on the laying worktable, and a layer of EVA is laid flat on it. Then, the serially soldered solar cells are laid flat on the EVA, followed by another layer of EVA on the solar cells. Finally, a backsheet is laid flat on the top layer. The fabricated component is placed in a vacuum laminator for lamination, where the EVA is cured at high temperature to form a single laminate. Finally, the electronic paper is bonded to the backsheet.

[0013] In this embodiment, the solar cell module 6 is equipped with an energy storage system, including a controller 7 and a battery 8. The electricity generated by the module charges the battery through the controller, while the power required for the electronic paper to operate is provided by the battery of the energy storage system.

[0014] This invention features a simple process that effectively combines solar cell modules with electronic paper, enhancing the module's functionality. Especially in public spaces where the module is used, it serves not only as a power generator but also as a form of advertising and promotion.

Claims

1. A solar cell module with display function, comprising an upper layer of ultra-white low-iron tempered glass, a middle layer of solar cells and a backsheet, and a bottom layer of electronic paper, wherein an EVA encapsulation layer is provided between the tempered glass and the solar cells, and between the solar cells and the backsheet, and the bottom layer of electronic paper is bonded to the backsheet.

2. A solar cell module with display function as described in claim 1, wherein the solar cell is a monocrystalline silicon, polycrystalline silicon, or amorphous silicon thin-film solar cell.

3. The solar cell module with display function as described in claim 1, wherein the backsheet material used is tempered glass, TPT, PET or TPE composite film, etc.

4. The solar cell module with display function has an energy storage system. The electricity generated by the module charges the battery through the controller, while the power required for the electronic paper to work is provided by the battery of the energy storage system.

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