Photovoltaic module recovery method and equipment

Abstract

The invention discloses a photovoltaic module recovery method. The method comprises the following steps: obtaining a pre-processed photovoltaic module without a frame, a junction box or a back substrate; placing the pre-processed photovoltaic module in a heating device to perform high-temperature pyrolysis on an organic adhesive layer to obtain a pyrolyzed photovoltaic module; placing the pyrolyzed photovoltaic module in a heat preservation device for heat preservation to obtain a heat-preserved photovoltaic module; and cooling the photovoltaic module to normal temperature after heat preservation to obtain a photovoltaic cell, a solder strip and a front substrate which are separated from one another. According to the recovery method disclosed by the invention, the pre-processed photovoltaic module is subjected to high-temperature pyrolysis to obtain the pyrolyzed photovoltaic module,; the pyrolyzed assembly is subjected to heat preservation and cooling treatment in sequence, the photovoltaic cell, the welding strip and the front substrate which are separated from one another are obtained, separation and recovery of the photovoltaic assembly are achieved, completeness of a cell piece and the front substrate can be achieved, loss is small, the recovery rate is high, an acid solution does not need to be used for dissolution, and the recovery speed is increased. The invention further provides recovery equipment with the 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

Images