Interdigital back contact solar cell module and manufacturing method thereof

Abstract

The invention relates to an interdigital back contact solar cell module and a manufacturing method of the interdigital back contact solar cell module. The interdigital back contact solar cell module comprises an insulation adhesive film, a conduction band, conductive adhesives, interdigital back contact solar cell pieces, negative poles of the interdigital back contact solar cell pieces and positive poles of the interdigital back contact solar cell pieces. The two interdigital back contact solar cell pieces are stuck to each other through the insulation adhesive film and used for achieving pre-fixation. The conduction band is respectively connected with the white high-light-reflection insulation adhesive film and the conductive adhesives coating the positive poles of the interdigital back contact solar cell pieces and the negative poles of the interdigital back contact solar cell pieces. According to the manufacturing method, the conduction band can be reliably and electrically connected with the positive poles of the interdigital back contact solar cell pieces and the negative poles of the interdigital back contact solar cell pieces through the conductive adhesives without welding, so that the packaging requirements for non-welding, the low temperature and the low cost in the battery piece packaging process are met, the fragmenting rate and the packaging cost in the battery piece production process are reduced, and the reliability in the product packaging process is improved.

Description

technical field [0001] The invention relates to the field of battery preparation, and in particular designs an interdigitated contact solar battery module and a preparation method thereof. Background technique [0002] With the deterioration of the environment and the depletion of fossil energy, the development and utilization of new energy has become the focus of attention of all countries. Among them, photovoltaic power generation has become a hot spot in the development of new energy due to its characteristics of stability, cleanliness, and zero emissions. In photovoltaic power generation, crystalline silicon solar cells dominate the market due to their low cost, high efficiency, and stable performance. [0003] As a kind of crystalline silicon solar cell, the interdigitated back contact solar cell can eliminate the shielding of the grid line and conductive ribbon on the front surface by changing the structure of the cell, so that the entire surface of the cell can receiv...

AI Technical Summary

Problems solved by technology

However, since the back-contact solar cells are thinner than conventional cells, fragments and hidden cracks are likely to appear due to the impact of local high temperatures greater than 200°C when welding technology is used for packaging, resulting in waste of production and the reliability of components.

The price of a flexible conductive backsheet is about five times that of an ordinary backsheet, which increases the cost of solar cell modules, making it difficult to achieve large-scale production, and the products will also lack market competitiveness.

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