A method and device for recycling photovoltaic modules

Abstract

The present application discloses a photovoltaic module recovery method, which includes obtaining a pretreated photovoltaic module without a frame, no junction box, and no back substrate; placing the pretreated photovoltaic module in a heating device to perform high-temperature pyrolysis of the organic adhesive layer, Obtain the photovoltaic module after pyrolysis; place the photovoltaic module after pyrolysis in the heat preservation device for heat preservation to obtain the photovoltaic module after heat preservation; cool the photovoltaic module after heat preservation to normal temperature, and obtain photovoltaic cells, welding ribbons, and front substrates separated from each other. The recycling method in this application obtains the post-pyrolysis photovoltaic assembly by performing high-temperature pyrolysis on the pretreated photovoltaic assembly, and heat-preserves and cools the pyrolysis assembly sequentially to obtain photovoltaic cells, welding ribbons, and front substrates separated from each other, and realizes photovoltaic The components are separated and recycled, and the integrity of the battery sheet and the front substrate can be achieved, with less loss and high recovery rate, without the need to use acidic solution for dissolution, which improves the recovery speed. The present application also provides a recycling device with the above-mentioned advantages.

Description

technical field [0001] The present application relates to the field of photovoltaic technology, in particular to a method and equipment for recycling photovoltaic modules. Background technique [0002] A photovoltaic module is a device that can convert solar energy into electrical energy. A photovoltaic module includes a frame, a junction box, and a backplane (or glass substrate) stacked sequentially from bottom to top, an organic adhesive layer (EVA or POE, etc.), battery sheets Layer, organic adhesive layer (EVA or POE, etc.), glass substrate. Among them, most of the components such as silicon, aluminum, silver, and glass in the glass substrate, backplane, and cell layer can be recycled and reused through recycling. [0003] At present, when recycling photovoltaic modules, one is to use an incinerator to incinerate crushed photovoltaic modules, so as to realize the separation and recycling of cells, glass, and ribbons; the other is to place photovoltaic modules in a conta...

AI Technical Summary

Problems solved by technology

The products obtained by using the incinerator are crushed broken glass and broken batteries, which are difficult to screen and separate, and a lot of manpower and material costs are wasted, and there is a large material loss in the separation, which cannot fully recycle valuable materials; It takes a long time to recycle the container containing the acid solution, which takes more than a week, and it is difficult to treat the waste liquid in the later stage

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