Double-sided power generation double-glass assembly

Abstract

The invention discloses a double-sided power generation double-glass assembly. The assembly is provided with front glass, a front hot melting adhesive film, a solar battery string, a back hot melting adhesive film and punching glass in sequence from top to bottom; a plurality of double-faced battery pieces are serially arranged on the solar battery string; thin grid lines are arranged on the surfaces of the double-faced battery pieces; thick grid lines are arranged at two ends of the front face and the back face of each double-faced battery piece; the heads and tails of the adjacent double-faced battery pieces are overlapped mutually to form a cascaded structure; and the thick grid lines are connected with a junction box on the punching glass through bus bars. According to the double-glass assembly structure disclosed by the invention, an N-type PERT double-faced power generation battery is adopted, and the adjacent batteries are connected together in a manner that the heads and tails are overlapped in virtue of a conducting material, so that the output power and conversion efficiency of the assembly can be obviously improved.

Description

technical field [0001] The invention belongs to the technical field of solar photovoltaic power generation, and in particular relates to a double-sided power generation double-glass component. Background technique [0002] From top to bottom, the traditional solar cell module structure consists of cover glass, hot-melt adhesive film, battery, hot-melt adhesive film, back plate, frame for improving mechanical strength and junction box for interconnection. At present, the packaging of solar cells is mainly in series structure, using interconnection strips to connect adjacent batteries in series, mainly to increase their output voltage, but there are some problems in this connection method: first, the interconnection strips must realize the connection between adjacent cells. The front and back sides are connected in series according to the polarity, there must be a gap of a certain size between the cells, and the sunlight incident on this area cannot be effectively utilized; se...

AI Technical Summary

Problems solved by technology

At present, the packaging of solar cells is mainly in series structure, using interconnection strips to connect adjacent batteries in series, mainly to increase their output voltage, but there are some problems in this connection method: first, the interconnection strips must realize the connection between adjacent cells. The front and back sides are connected in series according to the polarity, there must be a gap of a certain size between the cells, and the sunlight incident on this area cannot be effectively utilized; secondly, the interconnection strips will block the front of the cells, affecting the power generation performance of the module ; At the same time, when the photo-generated current is conducted in the interconnection strip, it will generate heat loss and reduce the output power of the module. These are important factors that cause the efficiency of the module to be far lower than that of the battery

[0003] Now some enterprises start to adopt the stacked series structure to improve power generation efficiency, but the modules using the stacked series structure are all single-glass structures, and the battery is a single-sided power generation battery, and the conversion efficiency of the module is low; the backplane of the module is resistant to wind, sand, water vapor, and salt Poor fog performance and poor component reliability; components are framed and prone to potential-induced degradation (PID) effects

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