Photovoltaic module capable of increasing power output

Abstract

The invention discloses a photovoltaic module capable of increasing power output. The photovoltaic module capable of increasing the power output comprises toughened glass, an upper hot melt adhesive membrane (EVA), a battery piece, a lower hot melt adhesive membrane (EVA) and a back plate which are sequentially stacked from top to bottom. The photovoltaic module capable of increasing the power output is characterized in that the battery piece is welded by an interconnector which is provided with a reflective layer in an attached mode. In normal work of the module, sunlight which is originally radiated on the interconnector is radiated on the reflective layer, the reflective light of the reflective layer is irradiated to the interface of the toughened glass and the air, part of the reflective light is refracted out, and the rest light is reflected back to the direction of the battery and is absorbed. The light which is originally irradiated to the interconnector and is not utilized is reflected back to the battery piece to be absorbed and used now. According to the photovoltaic module capable of increasing the power output, the light irradiated to the interconnector can be reflected and is reflected again on the interface of the glass and the air, then the light enters the surface of a battery and is absorbed by the battery, and therefore the output power of the battery is improved.

Description

technical field [0001] The invention belongs to the field of photovoltaic component manufacturing, and in particular relates to a photovoltaic component with increased power output. Background technique [0002] Sunlight shines on the non-grid shielding part of the battery, the battery contacts the sunlight, absorbs it, and generates current through the photovoltaic effect. This is the basic process of photoelectric conversion of the battery. It can be seen that the amount of power generated by the battery is also the actual output power of the module. , to a large extent depends on how much light energy the battery as a whole can receive. At present, the production of conventional components generally stacks glass-EVA-battery-EVA-back plate in sequence, and then laminates them at high temperature to form a whole, and the batteries are connected in series with interconnection strips before stacking. At present, the battery with three busbars is the most used. The three busb...

AI Technical Summary

Problems solved by technology

At present, the battery with three busbars is the most used. The three busbars are placed on the negative side of the battery. When the battery is welded, the interconnection bar is welded on the busbar. No matter whether the busbar is continuous or intermittent, in the production of components The interconnection strips will block this part. Not only can this part not absorb sunlight, but also the surface of the interconnection strips is rough after welding, and the proportion of diffusely reflected light is very small, and even less is reflected on the cells, so it irradiates this part. The sunlight is basically not utilized, which is not good for the power of the battery or the molded components.

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