Integrated back plate and back contact type photovoltaic module and production method thereof

Abstract

The invention relates to an integrated back plate for a back contact type photovoltaic module and provides the back contact type photovoltaic module with the integrated back plate and a production method of the back contact type photovoltaic module. The integrated back plate for the back contact type photovoltaic module comprises a combined type electrical interconnection component for providing electric connection between a back contact type photovoltaic battery and a conductive circuit in the integrated back plate. The technology is urgently needed by manufacturers producing back contact type photovoltaic modules. Efficiency and durability of the back contact type photovoltaic module can be improved, the using quantity of conductive binding agents can be saved greatly, and accordingly manufacturing cost is reduced to a great extent.

Description

technical field [0001] The invention relates to an integrated backplane for a back contact photovoltaic module, a back contact photovoltaic module comprising the integrated backplane and a production method thereof. In particular, the present invention relates to an integrated backplane for a back-contact photovoltaic module including a composite electrical interconnection member and a production method thereof, a back-contact photovoltaic module including a composite electrical interconnection member Voltaic modules and methods for their production. Background technique [0002] The use of photovoltaic (or solar) cells is rapidly expanding due to their ability to provide sustainable energy. In conventional silicon solar cells that have been commercialized, both the emitter and the emitter electrode are located in front of the cell. [0003] In the manufacture of conventional photovoltaic modules, in order to achieve at least 20 years of weather resistance, photovoltaic ce...

AI Technical Summary

Problems solved by technology

However, this structure has its limitations: although the electrode occupies a small area, it will still block part of the sunlight, reducing the effective light-receiving area of ​​the photovoltaic cell; The front is welded to the back of another battery, which makes it more difficult to automate production

The disadvantage of this connection method is that a large amount of conductive adhesive needs to be used

Although the cost of this connection is lower, the production efficiency of the module is lower

Moreover, high-temperature welding will introduce high thermal stress on the back-contact photovoltaic cells, resulting in a high rate of cell damage

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