Double-sided monocrystalline laminated photovoltaic module and manufacturing method thereof

Abstract

The invention discloses a double-sided monocrystalline laminated photovoltaic module and a manufacturing method thereof. The manufacturing method comprises the steps of S1, cutting each monocrystalline silicon double-sided laminated battery piece 1 into N small battery pieces; S2, sequentially overlapping the cut small battery pieces end to end to form battery strings; S3, connecting the battery strings through a first welding strip to form a long battery string; S4, respectively welding second welding strips to two ends of the connected long battery string; S5, performing a module packaging procedure; and S6, connecting a junction box. According to the invention, one battery piece is cut into two types of small battery pieces, and the small battery pieces are connected according to the shape and specifications to form the battery strings, so that two different types of battery strings are packaged in the same module, and the uniformity of the product appearance is realized.

Description

technical field [0001] The invention belongs to the technical field of photovoltaic modules, and in particular relates to a double-sided single crystal laminated photovoltaic module and a manufacturing method thereof. Background technique [0002] The interconnection of cells in traditional crystalline silicon photovoltaic modules is commonly done by arranging the cells sequentially, using tin-coated solder strips containing copper substrates as interconnection strips, and soldering the interconnection strips to the front busbar of the first cell , and the other end of the interconnection bar is welded to the back grid line of the adjacent second cell. The two ends of the second interconnection bar are respectively welded to the front main grid line of the second battery piece and the back grid line of the third battery piece, and so on. In this way, all the battery slices are connected in series. [0003] The laminated module adopts another technology of cell interconnect...

AI Technical Summary

Problems solved by technology

[0008] Disadvantage 1 of the existing technology: As mentioned in the background technology, the design of double-sided photovoltaic modules requires that the front and back of the battery cannot be directly blocked (or covered), so the junction box on the back should be placed in an area other than the battery. , which increases the area of ​​the glass, thereby reducing the conversion efficiency of the module

Disadvantage 2: In the existing technology, small chips with and without chamfers are packaged into different components, so that there are two types in terms of product appearance, one is the product with chamfers and the other is without chamfers and there is a difference in power between the two components; this will confuse customers in terms of appearance and product power. The two products are accompanying. If customers only choose one of the appearance products, it will cause Another look at the backlog and waste of products

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