Method for manufacturing solar cell modules
A technology of solar cells and solar cells, applied in the direction of electrical components, final product manufacturing, sustainable manufacturing/processing, etc., can solve the problems of overlapping solar cell arrays, glass flatness and edge deformation, and uneven glass surface flatness Good and other problems, to achieve the effect of reduced damage rate, low packaging cost, and improved electrical performance
Active Publication Date: 2014-11-05
CHANGZHOU ALMADEN
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Problems solved by technology
3 mm tempered glass is the limit that the current horizontal roller tempering furnace can achieve. However, whether it is a strong convection furnace or a continuous furnace, there are always problems with glass flatness and edge deformation for 3 mm tempered glass, and Flatness and edge deformation are very important for the packaging of solar cells
However, during the lamination process, encapsulation materials such as ethylene-vinyl acetate (EVA) will soften due to being placed in a heated environment above about 120°C, resulting in overlapping solar cell arrays arranged in parallel , resulting in poor component power
Furthermore, when encapsulating by the lamination method, if the above-mentioned general horizontal roller tempering furnace is used for tempering and the tempered glass is larger than 3mm, in addition to the weight of the glass itself, it will also be due to The flatness of the glass surface is not good, and the cells with a thickness of only about 180 to 200 microns are cracked or even broken during lamination.
Therefore, the conventional lamination method is not suitable for encapsulation with a generally transparent glass back substrate.
Method used
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Embodiment 1
[0027] A plurality of solar cell sheets are welded together with the prepared interconnect sheet to form a solar cell array layer; the bottom layer is coated on a LiSEC physical tempered substrate with a thickness of about 2.5 mm; ethylene-vinyl acetate The ester layer is placed on the physically toughened substrate that has been coated with the bottom layer to form the first stacked layer; the above steps are repeated to form the second stacked layer; The vinyl ester layer is converted into a bonding glue; the first stack layer, the solar cell array layer and the second stack layer are stacked together, and placed in a vacuum laminator for vacuum packaging, and the process is carried out at about 150°C for about From 15 minutes to about 20 minutes, the layers are combined into one, and taken out after molding; then a metal frame is added to make a solar cell module.
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Abstract
The invention discloses a method for manufacturing solar cell modules. The method comprises the steps of forming a first stack layer consisting of a first substrate, a first bottom layer and a first adhesive layer in order, forming a second stack layer in order consisting of a second substrate, a second bottom layer and a second adhesive layer, providing a solar cell piece array layer between the first adhesive layer of the first stack layer and the second adhesive layer of the second stack layer, and bonding the first stack layer, the solar cell piece array layer and the second stack layer thermally.
Description
technical field [0001] The present invention relates to a manufacturing method of a solar cell module, in particular to a packaging method that uses a face-to-face method instead of a sequential stacking method to combine various layers of the solar cell module to make them integrated. Background technique [0002] Solar cells have the effects of environmental protection and energy saving, and have gradually been widely used in daily life. Solar cells are mostly made of single crystal silicon or polycrystalline silicon. Because of their thinness and brittleness, they cannot withstand large impacts, and the electrodes of solar cells cannot be used exposed for a long time and the working voltage of a single solar cell is low. A single solar cell is connected in series and parallel, and is tightly packaged into a solar cell module, so that it can become a unit that can be used independently as a power source. [0003] The manufacturing methods of existing solar cell components...
Claims
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Login to View More IPC IPC(8): H01L31/18
CPCH01L31/048H01L31/0481Y02E10/50Y02P70/50
Inventor 林金锡林金汉林于庭方福全
Owner CHANGZHOU ALMADEN