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Back contact solar cell interconnection structure

A technology for solar cells and solar cell sheets, applied in the field of solar cells, can solve problems such as occurrence of debris, and achieve the effects of flexible setting, flexible and reliable connection, and flexible interconnection.

Pending Publication Date: 2020-09-15
LONGI SOLAR TECH (TAIZHOU) CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to overcome the deficiencies of the prior art and provide a back-contact solar cell interconnection structure, which can solve the problem of debris generated during the lamination process of components

Method used

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  • Back contact solar cell interconnection structure
  • Back contact solar cell interconnection structure
  • Back contact solar cell interconnection structure

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Embodiment Construction

[0038] Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, the same numerals in different drawings refer to the same or similar elements unless otherwise indicated. The implementations described in the following exemplary examples do not represent all implementations consistent with the present disclosure. Rather, they are merely examples of apparatuses and methods consistent with aspects of the present disclosure as recited in the appended claims.

[0039] Such as Figure 1-5As shown, a back-contact solar cell interconnection structure provided by the present invention includes a plurality of back-contact solar cell sheets 1 and an electrical connection layer, and the electrical connection layer includes a plurality of conductive metal wires 2, bus strips 3 and packaging materials 4, Both the conductive metal wire 2 and the bus s...

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Abstract

The invention provides a back contact solar cell interconnection structure, relates to the field of solar cells, and can solve the problem that fragments are generated in the lamination process of anassembly. The interconnection structure comprises a plurality of back contact solar cells and an electric connection layer, wherein the electric connection layer comprises a plurality of conductive metal wires, a bus bar and a packaging material, the conductive metal wires and the bus bar are embedded in the packaging material, and the packaging material is a thermoplastic packaging material. According to the invention, conductive metal wires and a bus bar are embedded into a thermoplastic packaging material in a pre-laminating manner, and then the conductive metal wires are connected with theback electrode of a solar cell to realize flexible interconnection, so that the phenomenon of fragment generation in the module laminating process is avoided; and the parallel and staggered conductive metal wires are connected with the back electrode of the cell, so that the back contact solar cell interconnection structure can be flexibly arranged, cut and interconnected according to the area ofthe cell and the pattern of the back electrode of the cell.

Description

technical field [0001] The invention relates to the field of solar cells, in particular to an interconnection structure of back contact solar cells. Background technique [0002] At present, back-contact solar cells (such as IBC, MWT, and EWT solar cells) have received widespread attention. Because there is no busbar on the front, or even any electrode patterns, the positive and negative electrodes are located on the back of the cell, reducing the number of cells. The light shading effectively increases the short-circuit current of the cell and improves the energy conversion efficiency of the cell. Since the short-circuit current of back-contact solar cells is much higher than that of conventional cells, it is required to reduce the series resistance of back-contact solar cells as much as possible to reduce the ohmic loss of the components and improve the photoelectric conversion efficiency of the components. [0003] Slice the back-contact solar cells and package them into...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L31/05H01L31/0224
CPCH01L31/0504H01L31/022441Y02E10/50
Inventor 李华刘继宇
Owner LONGI SOLAR TECH (TAIZHOU) CO LTD
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