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Method for making BIPV component by adopting transparent TPT material

A transparent and component technology, which is applied in the direction of chemical instruments and methods, electrical components, semiconductor devices, etc., can solve the problems of heavy weight, backplane TPT bubbles, bubbles, etc., and achieve the effect of ensuring weather resistance and service life

Inactive Publication Date: 2010-03-03
NAN AN SANJING SOLAR POWER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Glass is a poor conductor of heat. Two layers of glass are used for lamination, and the total thickness of the glass is relatively thick. EVA glue is likely to cause battery chip crushing, battery cell displacement, double-layer glass stack difference, air bubbles, etc. during vacuuming, melting, and lamination. unpleasant sight
[0004] In addition, in the production of opaque TPT solar modules, when the traditional process is used for lamination, there is no TPT pretreatment, which will also cause poor appearance such as TPT bubbles and wrinkles on the back panel of the module.
At the same time, traditional double-glazed components cannot be bent, are not suitable for curved metal roof structures, and are heavy in weight. When applied to awnings, daylighting roofs and daylighting curtain walls of some low-rise buildings, construction costs are increased and there is no advantage

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] 1) Single solar cell, after laser scribing and electrical performance sorting, performs single welding, series welding and sink welding according to the design performance parameters of the components. The battery after sink welding is tested for electrical performance and appearance.

[0028] 2) Prepare a clean strip of ultra-clear glass and EVA film; lay a layer of EVA film with a thickness of 0.8mm on the surface of the ultra-clear glass cloth, the size of the film is about 5mm longer than the size of the glass, and then Lay the battery string after sink welding; then lay two layers of 0.8mm thick EVA film, and finally lay 0.35mm transparent TPT material. Lead out the positive and negative electrodes of the battery from the EVA film and transparent TPT material.

[0029] 3) The transparent TPT material is pre-pressed in a laminator in advance: in an environment of 120 ° C, vacuumize to 100 Pa, then fill with 0.5 atmospheres of air, and keep warm for 5 minutes to pre...

Embodiment 2

[0032] 1) Single solar cell, after laser scribing and electrical performance sorting, performs single welding, series welding and sink welding according to the design performance parameters of the components. The battery after sink welding is tested for electrical performance and appearance.

[0033] 2) Prepare a clean strip of ultra-clear glass and EVA film. Lay a layer of 0.7mm thick EVA film on the surface of the ultra-white glass cloth, the size of the film is about 4mm longer than the size of the glass, and then lay the battery string after sink welding; then lay two layers of 0.9mm thick EVA Adhesive film, and finally lay 0.4mm transparent TPT material. Lead out the positive and negative electrodes of the battery from the EVA film and transparent TPT material.

[0034] 3) The transparent TPT material is pre-pressed in a laminator: in an environment of 115°C, vacuumize to 150Pa, then fill with 0.3 atmospheres, and keep warm for 3 minutes to pre-press.

[0035] 4) Put t...

Embodiment 3

[0037] 1) Single solar cell, after laser scribing and electrical performance sorting, performs single welding, series welding and sink welding according to the design performance parameters of the components. The battery after sink welding is tested for electrical performance and appearance.

[0038] 2) Prepare a clean strip of ultra-clear glass and EVA film. Lay a layer of 0.6mm thick EVA film on the surface of the ultra-white glass cloth, the size of the film is about 7mm longer than the size of the glass, and then lay the battery string after sink welding; then lay two layers of 1.0mm thick EVA Adhesive film, and finally lay 0.5mm transparent TPT material. Lead out the positive and negative electrodes of the battery from the EVA film and transparent TPT material.

[0039] 3) The transparent TPT material is pre-pressed in a laminator in advance: in an environment of 125°C, vacuumize to 200Pa, then fill with 0.6 atmospheres of air, and keep warm for 7 minutes to pre-press. ...

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Abstract

The invention discloses a method for making a BIPV component by adopting a transparent TPT material, and relates to the technical field of processing of solar cell modules. The component adopts transparent TPT to replace traditional back-panel glass so as to form a laminated structure of glass plus EVA plus cell plus EVA plus TPT; two layers of the EVA is adhered with the TPT, thus increasing thethickness of the EVA, changing the deformation modulus of the EVA during high-temperature cross-linked solidification, leading the EVA to be consistent with the deformation of the transparent TPT, andleading the back-panel TPT of the component not to have bad appearance phenomena such as air bubbles and wrinkles and the like.

Description

technical field [0001] The invention belongs to the technical field of solar cell module processing, and relates to a method for manufacturing a building-integrated photovoltaic (BIPV) module from a transparent TPT material. Background technique [0002] Lamination technology is the key technology for solar cells to be packaged into modules. The existing solar photovoltaic modules are generally made of high light-transmitting glass on the upper layer, an opaque TPT board on the lower layer, and EVA film and solar cells in the middle. The standard photovoltaic module It is opaque and cannot achieve the power generation and transparency required by BIPV. Therefore, traditionally, in order to achieve the effect of transparent lighting of the module, the module is often laminated with two layers of glass. For example, Chinese patent application number 200810020739.3 discloses a process double-glass photovoltaic module and its production method. The photovoltaic module of the in...

Claims

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Application Information

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IPC IPC(8): H01L31/048H01L31/18B32B27/32
CPCY02E10/50Y02A30/60
Inventor 黄旱雨洪紫州闻震利张伟娜
Owner NAN AN SANJING SOLAR POWER
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