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Double-sided power generation solar panel and preparation method thereof

A technology of solar panels and double-sided photovoltaic cells, applied in photovoltaic power generation, circuits, electrical components, etc., can solve problems such as reduced power generation efficiency, and achieve the effect of improving electrical conductivity, reliable connection, and ensuring good contact

Pending Publication Date: 2019-06-18
宗涛
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the embodiments of the present invention is to provide a double-sided solar panel for power generation and its preparation method to solve the problem that the power generation efficiency of existing solar panels for power generation decreases after being used for a period of time

Method used

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  • Double-sided power generation solar panel and preparation method thereof
  • Double-sided power generation solar panel and preparation method thereof
  • Double-sided power generation solar panel and preparation method thereof

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Embodiment 1

[0026] Such as figure 1 As shown, embodiment 1 provides a double-sided power generation solar panel including a glass panel 1, several double-sided photovoltaic cells 2 and a glass back plate 3; several double-sided photovoltaic cells 2 are arranged at intervals on the glass panel 1 Between the glass backplane 3, the glass panel 1 and the glass backplane 3 are welded into one body.

[0027] refer to Figure 5 The double-sided photovoltaic cell sheet 2 includes: several front electrodes 21, front surface anti-reflection film 22, boron-doped emitter 23, crystalline silicon layer 24, phosphorus-doped back field arranged sequentially from the glass panel 1 to the glass back panel 3 25. The back anti-reflection film 26 and several back electrodes 27, the front electrode 21 is connected to the boron-doped emitter 23 through the front anti-reflection film 22, and the back electrode 27 is connected to the phosphorus-doped back field through the back anti-reflection film 26 25; the f...

Embodiment 2

[0036] Such as figure 2 As shown, the structure and preparation method of the double-sided power generation solar panel provided by the embodiment of the present invention are basically the same as those in Example 1, the difference is that the glass panel 1 and the glass back of the double-sided power generation solar panel provided by the embodiment of the present invention The outer surface of the plate 3 is covered with outwardly protruding spherical surfaces 8, and the radius of all spherical surfaces is less than or equal to 1mm. On the one hand, it can gather and receive light, which is more conducive to receiving more light and improving the efficiency of photovoltaic cells to generate electricity; on the other hand, the spherical surface is easy to form a diffuse reflection effect to avoid affecting aircraft.

Embodiment 3

[0038] Such as image 3 As shown, the structure of the double-sided power generation solar panel provided by the embodiment of the present invention is basically the same as that of Embodiment 1, the difference is that the double-sided power generation solar panel provided by the embodiment of the present invention is installed flat, for example, installed Roofs, car roofs or exterior walls of buildings are widely used. The double-sided power generation solar panel receives light from the glass panel 1 to generate current and voltage. The outer surface of the glass back panel 3 is provided with a reflective coating 9, which passes through two double-sided photovoltaic cells. The light in the gap between the sheets 2 is reflected by the glass back plate 3 to the back of the double-sided photovoltaic cells. The electron-hole pairs absorbed and excited by silicon are separated by n+-n high and low junctions, thus contributing to the photocurrent and efficiency of the cell.

[00...

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Abstract

Embodiments of the invention disclose a double-sided power generation solar panel and a preparation method thereof, and relate to the technical field of new energy utilization; the fixing of a batterypiece does not use EVA, and instead, is fixed between a glass panel and a glass back plate through welding, so that the reduction of electricity generation efficiency and shortening of the service life caused by the decrease of the light transmittance due to the aging and yellowing of the EVA can be avoided; in addition, the glass panel and the glass back palate are welded into a whole between the battery pieces, so that the battery pieces are prevented from sliding, and the connection between the battery pieces and electrodes is more reliable, and the conductive efficiency is ensured; compared with the use of EVA fixation, the conductive efficiency is remarkably improved after being used for a period of time, and a front electrode and a back electrode are in positive electrical contact with a front electrode circuit and a back electrode circuit through a front electrode contact and a back electrode contact respectively, so that high contact between the electrodes and the battery pieces is further ensured, the problem that the electric conduction efficiency is low due to poor contact is avoided, and the problem that power generation efficiency is low after the power generation solar panel is used for a period of time is solved.

Description

technical field [0001] The invention relates to the technical field of new energy utilization, in particular to a double-sided power generation solar panel and a preparation method thereof. Background technique [0002] Solar cells, also known as "solar chips" or "photovoltaic cells", are photoelectric semiconductor sheets that use sunlight to generate electricity directly. A single solar cell cannot be directly used as a power source. To be used as a power source, several single solar cells must be connected in series and parallel and tightly packaged into modules. [0003] Existing solar panels for power generation are mainly composed of tempered glass, EVA, battery sheets, back sheets, and edge wrapping. The toughened glass plays the role of protecting the battery and light transmission; EVA is used to bond and fix the tempered glass and the battery to avoid relative sliding. The sliding of the battery affects the contact (connection) between the battery and the electrod...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L31/048H01L31/02H01L31/068H01L31/18
CPCY02E10/547Y02P70/50
Inventor 宗涛
Owner 宗涛