Preparation method of photovoltaic conversion laminated piece and electrical performance testing method thereof

Abstract

The invention discloses a preparation method of a photovoltaic conversion laminated piece. The preparation method comprises the following steps: (1) connecting an anode of a photovoltaic conversion device with anode connecting wires; (2) gathering and connecting the anode connecting wires of the photovoltaic conversion device through a first bus wire; (3) connecting a first external connection wire with the first bus wire; (4) sequentially laminating to obtain a laminating structure; (5) arranging gaps on a backboard and the adjacent packaging material, respectively leading the first external connection wire and a second external connection wire out of the laminating structure from the gaps; (6) laminating the laminating structure to obtain the photovoltaic conversion laminated piece. When the electrical performance test is performed on the laminated piece, the power consumption of the bus wires and the external connection wires can be greatly reduced, even if a few photovoltaic conversion devices are arranged in the laminated piece, the electrical performance test result is not influenced and the test numerical value can be very stable, so that the laminated piece is more suitable for a photovoltaic new product in a research and development process.

Description

technical field [0001] The invention relates to a method for preparing a photoelectric conversion laminate and a method for testing its electrical properties, belonging to the technical field of solar cells. Background technique [0002] Conventional fossil fuels are being exhausted day by day. Among the existing sustainable energy sources, solar energy is undoubtedly the cleanest, most common and most potential alternative energy source. Solar power generation devices, also known as solar cells or photoelectric conversion devices, can directly convert solar energy into electrical energy. The principle of power generation is based on the photovoltaic effect of semiconductor PN junctions. In actual use, usually 48 to 72 pieces of photoelectric conversion devices are connected in series, and then a photoelectric conversion laminate (also known as a photovoltaic module) is obtained through a lamination process. [0003] However, during the development of new photovoltaic produ...

AI Technical Summary

Problems solved by technology

However, when the number of photoelectric conversion devices in the laminate is small, since the output power of the photoelectric conversion laminate itself is relatively low, the power loss on bus wires and test leads is as large as that of conventional photoelectric conversion laminates Yes, these power losses are very large for laminates with fewer photoelectric conversion devices, which will seriously affect the electrical performance test results, resulting in output power much lower than the theoretical power, and resulting in very unstable test values

Obviously, such test data cannot provide guidance for new product development at all

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