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Pre-packaging method for crystalline silicon solar cell dual-glass module

A technology for solar cells and double-glass components, applied in electrical components, semiconductor devices, circuits, etc., can solve problems such as high requirements for vacuum systems, easy residual gas, and impact on yield, so as to reduce the time for personnel training and equipment maintenance and cost, the adjustment method is simple, and the effect of speeding up the production speed

Inactive Publication Date: 2016-04-06
CECEP SOLAR ENERGY TECH (ZHENJIANG) CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing lamination equipment only has the heating function of the lower chamber, and the vacuum pump is used to realize the vacuum function to laminate the photovoltaic modules. The production process has high requirements on the vacuum system; the time required for the two-step method in the pre-lamination link is usually 20 Minutes, while the one-step method takes longer, the lamination process cannot be continuously produced, and problems such as air bubbles, displacement, and lamination are prone to occur. Therefore, the low yield and production efficiency of existing lamination equipment greatly limit double-glass Component market development
[0003] There are similar processing equipment in the production process of other industries such as laminated glass products. The structure of laminated glass is glass + film + glass, and it is pre-pressed by a laminated glass pre-pressing machine, which has high production efficiency. , but cannot be directly applied to the field of crystalline silicon solar energy for the following reasons: 1. figure 1 As shown, the laminated structure of double-glass modules of crystalline silicon solar cells is glass 1 + adhesive film 2 + battery sheet 3 + adhesive film 2 + glass 1, and the battery sheets are formed by connecting wires in series and parallel to the lead end. The biggest difference between laminated glass and double-glass modules is that there is a crystalline silicon battery in the middle, which is fragile; 2. Due to their different application fields, double-glass modules have different requirements for them, different layout designs, and requirements for production equipment and production processes. It is also different; 3. Due to the battery, residual gas is easy to remain in the double-glass module, and the degree of bonding between the film and between the film and the glass will seriously affect the exhaust effect of the module, thereby affecting the yield; 4 , Compared with laminated glass, double glass components are electrical components, which have strict requirements on their service life, environmental reliability, electrical safety, etc., and have stricter requirements on their production process
Due to the essential difference between double-glass modules of crystalline silicon solar cells and laminated glass, when this type of equipment is applied to the pre-pressing process of double-glass modules in the solar energy field, there will be serious fragmentation of the cells, and there will be a problem between the adhesive film and the glass. There will be easy bonding and incomplete exhaust, which will cause serious damage to the double glass component during the preloading process

Method used

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  • Pre-packaging method for crystalline silicon solar cell dual-glass module
  • Pre-packaging method for crystalline silicon solar cell dual-glass module
  • Pre-packaging method for crystalline silicon solar cell dual-glass module

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Example 1: Such as figure 2 The shown crystalline silicon solar cell double-glass module pre-packaging equipment includes a mounting frame 11, a conveying device, a motor, and a heating rolling device. The heating rolling device includes three heating units 15 and a pressing roller device 16; the conveying device is set On the installation frame 11 and driven by the motor, a pre-packaged delivery platform is formed. The pre-packaged delivery platform is divided into a discharge area 12, a heating roller press area 13 and a cooling area 14. The length of the discharge area is 2m, and the length of the cooling area is 4m. Three heating units 15 are arranged in the heating roll nip area to carry out three consecutive gradient heatings on the double-glass component passing through the heating roll nip area. The temperature of the first heating unit is 120°C and the length is 3.8m. The temperature of the second heating unit is 190°C and a length of 2m, the temperature of ...

Embodiment 2

[0035] Example 2: Such as image 3The shown pre-packaging equipment for double-glass modules of crystalline silicon solar cells includes a mounting frame 21, a conveying device, a motor, and two heating rolling devices. The first heating rolling device includes a heating unit 25 and a first pressing roller device 26. The second heating roller pressing device comprises two heating units 27 (respectively the second heating unit, the third heating unit) and the second pressing roller device 28, the third pressing roller device 29; Driven by the motor to form a pre-packaged conveying platform, the pre-packaged conveying platform is divided into a discharge area 22, a heating roller press area 23 and a cooling area 24 in turn, the length of the discharge area is 2.5m, and the length of the unloading area is 2.5m; the first The temperature of the heating unit of the heating roller pressing device is 130°C and the length is 4.8m. The pressing roller device of the first heating roll...

Embodiment 3

[0045] Example 3: Such as Figure 4 The shown crystalline silicon solar cell double-glass module prepackaging equipment includes a mounting frame 31, a conveying device, a motor and a heating rolling device, and the heating rolling device includes three heating units 35 (the first heating unit, the second heating unit, respectively). heating unit, the third heating unit) and two pressure roller devices (respectively the first pressure roller device 36, the second pressure roller device 37); The package conveying platform is divided into a discharge area 32, a heating roller pressing area 33 and a cooling area 34 in turn. The length of the discharging area is 2m, and the length of the cooling area is 4m. Three heating units 35 are arranged in the heating roller pressing area to The double-glass component in the rolling zone is heated continuously for three gradients. The temperature of the first heating unit is 150°C and the length is 3m; the temperature of the second heating...

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PUM

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Abstract

The invention provides a pre-packaging method for a crystalline silicon solar cell dual-glass module. The pre-packaging method comprises the steps of laying a dual-glass module, heating the dual-glass module, performing primary rolling on the dual-glass module, performing rolling and exhausting on the dual-glass module after the heating treatment, and cooling for realizing continuous production for the pre-packaging for the dual-glass module. According to the pre-packaging method, the rolling processing is performed after the step of heating, so that the percent of pass of the product is improved, the processing speed is accelerated, and the working efficiency is improved.

Description

technical field [0001] The invention relates to the field of solar cell manufacturing, in particular to a method for prepackaging a double-glass component of a crystalline silicon solar cell. Background technique [0002] At present, in the production process of double-glass modules, the relatively mature production process is the two-step packaging process of lamination pre-pressing + autoclave packaging or the packaging method of one-time lamination and one-step packaging. In the above two process methods, photovoltaic module lamination equipment is required. The existing lamination equipment only has the heating function of the lower chamber, and the vacuum pump is used to realize the vacuum function to laminate the photovoltaic modules. The production process has high requirements on the vacuum system; the time required for the two-step method in the pre-lamination link is usually 20 Minutes, while the one-step method takes longer, the lamination process cannot be conti...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L31/18H01L31/048
CPCH01L31/048H01L31/0488H01L31/18H01L31/186H01L31/1864Y02E10/50Y02P70/50
Inventor 范维涛史振侠薛姣周肃勾宪芳
Owner CECEP SOLAR ENERGY TECH (ZHENJIANG) CO LTD