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A kind of photovoltaic module and preparation method thereof

A photovoltaic module and part of the technology, applied in the field of solar cells, can solve the problems of cracks and cracks, and achieve the effects of reducing usage, reducing the risk of cracking, and improving reliability.

Active Publication Date: 2021-11-19
晶澳(扬州)新能源有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] In view of the above analysis, the present application aims to provide a photovoltaic module and its preparation method, which solves the problems caused by the external force at the edge of the overlapping area of ​​the cells in the stacking and lamination process in the photovoltaic module preparation process in the prior art. Prone to cracks or even cracks

Method used

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  • A kind of photovoltaic module and preparation method thereof
  • A kind of photovoltaic module and preparation method thereof
  • A kind of photovoltaic module and preparation method thereof

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preparation example Construction

[0051] The application provides a method for preparing a photovoltaic module, see Figure 1 to Figure 6 , the preparation method comprises the steps of:

[0052] Step S1: sequentially laying the first encapsulation film 1, the battery string, the second encapsulation film 5 and the cover plate 6 on the back plate 1 to obtain a laminate;

[0053] Step S2: laminating the laminate to obtain a solar cell module.

[0054] Wherein, the battery string includes a plurality of battery slices 3 connected in a head-to-tail overlapping manner; the backplane 1 includes a backplane main body 7 and an overlapping area disposed on the surface of the backplane main body 7 facing the battery string and overlapping with the battery slices 3 Corresponding to the plurality of back plate protrusions 8, the height of the back plate protrusions 8 can be reduced during the lamination process.

[0055] Compared with the prior art, in the preparation method of the photovoltaic module provided by the p...

Embodiment 1

[0089] The solar backboard of this embodiment includes: a backplane main body 7 and a plurality of backplane protrusions 8, the backplane main body 7 and the backplane protrusions 8 are integrated to form an integral adhesive film, and the backplane protrusions 8 are EVA adhesive films; Wherein, the gram weight of the back plate protrusion 8 is 40g / m 2 ; The back plate protrusion 8 in the direction of the vertical welding strip is a segmented protrusion, see figure 1 .

Embodiment 2

[0091] The solar backboard of this embodiment includes: a backplane main body 7 and a plurality of backplane protrusions 8, the backplane main body 7 and the backplane protrusions 8 are integrated to form an integral adhesive film, and the backplane protrusions 8 are EVA adhesive films; Wherein, the gram weight of the back plate protrusion 8 is 60g / m 2 ; The back plate protrusion 8 in the vertical direction of the welding strip is a continuous protrusion, see Figure 2 to Figure 3 .

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Abstract

The application discloses a photovoltaic module and its preparation method, which belongs to the technical field of solar cells, and solves the problems caused by the external force at the edge of the overlapped area of ​​the battery sheet in the lamination and lamination process in the photovoltaic module preparation process in the prior art. The effect is prone to the problem of cracks or even lobes. The preparation method of the present application includes the following steps: sequentially laying the first encapsulation film, the battery string, the second encapsulation film and the cover plate on the back plate to obtain a laminate; laminating the laminate; the battery string includes multiple The battery slices connected head to tail; the back plate includes a back plate main body and a plurality of back plate protrusions arranged on the surface of the back plate main body facing the battery string and corresponding to the overlapping area of ​​the battery slices. The photovoltaic module of the present application and its preparation method can be used for solar power generation.

Description

technical field [0001] The present application relates to a solar cell, in particular to a photovoltaic module and a preparation method thereof. Background technique [0002] Photovoltaic module technology has been very mature. A typical single-glass photovoltaic module structure mainly includes glass, the first EVA layer, battery strings, the second EVA layer and a back sheet; a typical double-glass module mainly includes glass, the first EVA layer, battery Strings, second EVA layer and glass. [0003] At present, the technologies that effectively increase the effective power generation area of ​​solar modules mainly include: shingling technology, splicing technology and stitching welding technology. Among them, in the shingling technology and the lap welding technology, the number of internal cells of the same size module is increased by stacking and placing adjacent cells head to tail, thereby improving power generation efficiency. Generally speaking, in shingling techn...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01L31/048H01L31/05H01L31/18
CPCH01L31/0481H01L31/0504H01L31/18Y02E10/50Y02P70/50
Inventor 李令先陈斌张文芮
Owner 晶澳(扬州)新能源有限公司
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