Novel semi-solar cell piece and preparation method and application thereof

Abstract

The invention discloses a novel semi-solar cell piece which is characterized in that the novel semi-solar cell piece is obtained by segmenting an entire cell piece into two in a direction parallel to the main grid line of the cell piece. According to the invention, the entire cell piece is evenly segmented into two in the direction parallel to the main grid line of the cell piece. The novel semi-solar cell piece herein, like conventional semi-cell pieces that are obtained by performing segmentation in the direction vertical to the main grid line, has the advantage of reducing internal consumption of the cell piece in the process of power generation, and can also prevent short circuit which is often caused in the segmentation technology. Also, according to the invention, in the preparation of a solar cell pack, when the same area of cell pieces are paved, the area of the solar cell pack is approximately the same as that of conventional pack, which is to say that when the area of the pack is approximately the same as the that of conventional pack, the novel semi-solar cell piece can also reach the effects of reducing internal consumption and thus achieves explicit economic benefits.

Description

technical field [0001] The invention belongs to the field of new energy, and in particular relates to a novel solar half-cell battery and its preparation method and application. Background technique [0002] In the existing technology, the traditional solution is to connect the entire single crystalline silicon cells in series, and through effective arrangement, and through effective lead-out lines, the electric energy emitted by the crystalline silicon cells under light conditions is effectively drawn out. and collect, indicated as attached figure 1 As shown, the 156x156mm cells are connected in series with NXM sheets (N≧1; M≧1), but due to their own limitations, the larger the size of a crystalline silicon cell, the higher the internal series resistance. The problem of greater power loss is that the power loss is greater, because the internal resistance of the battery sheet itself will cause loss during the power generation process, and the power loss is P loss = I 2 R, ...

AI Technical Summary

Problems solved by technology

[0002] In the existing technology, the traditional solution is to connect the entire single crystalline silicon cells in series, and through effective arrangement, and through effective lead-out lines, the electric energy emitted by the crystalline silicon cells under light conditions is effectively drawn out. and collect, indicated as attached figure 1 As shown, the 156x156mm cells are connected in series with NXM sheets (N≧1; M≧1), but due to their own limitations, the larger the size of a crystalline silicon cell, the higher the internal series resistance. The problem of greater power loss is that the power loss is greater, because the internal resistance of the battery sheet itself will cause loss during the power generation process, and the power loss is P loss = I 2 R, so, in order to reduce the power consumption of the cell itself, the existing technical scheme divides the single crystalline silicon cell perpendicular to the direction of the grid line under the condition of effective laser power, and divides the entire cell into two. example attached figure 2 As shown, this reduces the current of the battery sheet, thereby reducing the power consumption during the power generation process, but due to its own limitations, there are still the following problems: 1. This cutting method is not conducive to the production of subsequent components; 2. Because this cutting method needs to cut off the busbar wire, and the material of the busbar wire is metallic silver, it is easy to cause a short circuit in subsequent use. In order to avoid short circuit during use, people think of different methods to avoid short circuit, such as changing the battery film printing screen and other methods, but this also led to the rise of the cost and the problem of complex structure; 3, as attached image 3 When using the half-cell of the battery as shown to make a module, under the condition of using the same cell area, the module area will be much larger or more obvious than that of the traditional solution, which restricts the size of the mounting surface of the same size. Power generation or installation range

Images