High-absorption assembled carbon fiber U-shaped groove

Abstract

The invention relates to a U-shaped groove, in particular to a high-absorption assembled carbon fiber U-shaped groove and belongs to the technical field of application of solar energy batteries. The high-absorption assembled carbon fiber U-shaped groove comprises a first left carbon fiber board, a second left carbon fiber board, a third left carbon fiber board, a top carbon fiber board, a first right carbon fiber board, a second right carbon fiber board and a third right carbon fiber board, wherein the first left carbon fiber board, the second left carbon fiber board and the third left carbon fiber board are fixed by a plurality of first left connecting boards; the third left carbon fiber board and the top carbon fiber board are fixed by a plurality of second left connecting boards; the top carbon fiber board and the third right carbon fiber board are fixed by a plurality of second right connecting boards; the first right carbon fiber board, the second right carbon fiber board and the third right carbon fiber board are fixed by a plurality of first right connecting boards. The invention has the advantage that the carbon fiber boards are adopted as a groove body of the U-shaped groove, so that the phenomenon that silicon carbide peels off from the inner surface of the U-shaped groove to contaminate a battery plate caused by vibration is reduced.

Description

technical field [0001] The invention relates to a U-shaped trough, in particular to a high-adsorption spliced ​​carbon fiber U-shaped trough, which belongs to the technical field of solar cell applications. Background technique [0002] my country has always attached great importance to the research and development of solar cells. As early as the Seventh Five-Year Plan period, the research work on amorphous silicon semiconductors has been listed as a major national topic; battery etc. In October 2003, the National Development and Reform Commission and the Ministry of Science and Technology formulated a solar resource development plan for the next five years. The National Development and Reform Commission's "Bright Project" will raise 10 billion yuan to promote the application of solar power generation technology. It is planned that by 2015, the total installed capacity of the national solar power generation system will be up to 300 MW. my country has become the world's larg...

AI Technical Summary

Problems solved by technology

[0005] With the rapid development of the photovoltaic industry and the maturity of the photovoltaic industry, the market has put forward higher and higher requirements for solar cells. The uniformity of the coating on the surface of solar cells not only affects the appearance, but also affects the photoelectric conversion efficiency of solar cells. , while the surface treatment of the coating on the cell is relatively easy to contaminate the cell due to the peeling of the silicon nitride attached to the stainless steel U-shaped groove. At present, the U-shaped groove on the market is mostly made of stainless steel. The specific structure is as follows Figure 9 shown

During the working process, as the coating reaction proceeds, the deposits in the chamber will not only form a silicon nitride film on the surface of the solar cell, but also form a silicon nitride film on the inner surface of the U-shaped groove. With the daily routine of working hours, the silicon nitride attached to the surface of the U-shaped groove will become thicker and thicker to form a layer of harder silicon nitride layer, and the thermal expansion coefficient of the silicon nitride layer is very different from that of stainless steel. Differences, so when the machine vibrates or the temperature changes, the silicon nitride attached to the stainless steel U-shaped groove will peel off and fall on the solar cell to form impurities; and the impurities falling on the cell will eventually be deposited together with the reaction. Adhere to the cell together, affect the uniformity of the silicon nitride film on the surface of the cell, and then affect the appearance and conversion rate of the cell

Images