Lamination technology of film photovoltaic assembly

A thin-film photovoltaic module, lamination technology, applied in the direction of lamination, lamination devices, electrical components, etc., can solve the problems of easy generation of air bubbles, low module bonding, poor overall strength, etc., to reduce risks and reduce operation. Energy consumption, the effect of not easy to aging and failure

Active Publication Date: 2015-09-09
HANERGY MOBILE ENERGY HLDG GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical purpose of the present invention is to provide a thin-film photovoltaic module lamination process to solve the problems of easy generation of air bubbles, low component bonding and poor overall strength in the existing lamination process

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Embodiment 1: A thin film photovoltaic module lamination process, including the following process flow,

[0026] ①Preparation of battery chips: p-type, i-type, and n-type three-layer a-Si amorphous silicon thin film layers are deposited on the transparent TCO conductive film of the glass substrate by plasma chemical vapor deposition (PECVD) and physical vapor deposition (PVD) And the back electrode thin film layer, forming the main structure of thin film solar cell power generation;

[0027] ② Lead transmission structure: through ultrasonic welding technology, the drain bar and bus bar are respectively welded on the back electrode of the thin film solar cell chip, and the positive and negative electrodes are respectively drawn from the TCO conductive film and the back electrode of the thin film solar cell to form a battery of the thin film solar cell chip transport structure;

[0028]③Paying the connection film layer: Lay the connection film layer on the surface of the...

Embodiment 2

[0032] Embodiment 2: The difference between this embodiment and Embodiment 1 is that step ⑤ also includes a pre-pressing stage. The environment in the pre-pressing stage is specifically to control the lamination temperature to 145°C, control the vacuuming time to 4min and maintain the lamination vacuum at 30Pa , control the lamination pressure to 0.35 atmospheres and keep the lamination time at 3min. The pre-pressing stage includes a first stage for discharging air bubbles inside the battery assembly and a second stage for guiding and bonding the battery assembly. The environment of the first stage is as follows: control the lamination temperature to 140°C, control the vacuuming time to 4min and keep the lamination vacuum at 35Pa, control the lamination pressure to 0.33 atmospheres and keep the lamination time at 1.5min; the second stage The specific environment is to control the lamination temperature to 140° C., control the vacuuming time to 4 minutes and keep the lamination...

Embodiment 3

[0033] Embodiment 3: The difference between this embodiment and Embodiment 1 is that step ⑤ also includes a pre-pressing stage. The environment in the pre-pressing stage is specifically to control the lamination temperature to 130°C, control the vacuuming time to 5min and maintain the lamination vacuum at 50Pa , control the lamination pressure to 0.3 atmospheres and keep the lamination time at 2min. The pre-pressing stage includes a first stage for discharging air bubbles inside the battery assembly and a second stage for guiding and bonding the battery assembly. The environment of the first stage is as follows: control the lamination temperature to 130°C, control the vacuuming time to 3 minutes and keep the lamination vacuum degree at 50 Pa, control the lamination pressure to 0.30 atmospheres and keep the lamination time at 1 minute; the second stage environment Specifically, the lamination temperature is controlled at 150° C., the vacuuming time is controlled at 5 minutes an...

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Abstract

The invention relates to a lamination technology of a film photovoltaic assembly. The lamination technology comprises the flows of 1) preparing a battery chip; 2) leading a transmission structure; 3) laying a connection film layer; 4) laying a backboard package; 5) laminating a battery assembly; and 6) completing the battery assembly. In the flow 5), the lamination temperature is controlled between 160 and 165 DEG C, the lamination time is kept within 6-8 min, the vacuum-pumping time is controlled within 3 to 5 min, the laminating vacuum degree is kept between 0 and 50 Pa, and the laminating pressure is controlled between 0.4 and 0.6 that of the atmospheric pressure. The qualified rate and production efficiency of products are effectively improved, and the film photovoltaic assembly of higher reliability, longer service life and high stability and consistency can be obtained in the lamination process via optimization.

Description

technical field [0001] The invention relates to the technical field of photovoltaic cells, in particular to a thin-film photovoltaic module lamination process. Background technique [0002] As a new type of solar cell, thin-film solar cells have broad market prospects due to their wide source of raw materials, low production costs, and ease of mass production. Amorphous silicon thin-film solar cell components try to use the photovoltaic effect of the semiconductor interface to directly convert light energy into electrical energy. The specific manufacturing steps are as follows: 1. Through chemical or physical vapor phase on the glass substrate of transparent conductive TCO Deposition reaction forms the main power generation structure; 2. Weld the solar cells together with the prepared interconnection strips; 3. Vacuum hot-press seal the glass, EVA, battery power generation main parts, EVA, and backplane from top to bottom; 4. Install Wiring device, add aluminum alloy frame,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L31/18B32B37/10
CPCB32B37/10H01L31/18Y02P70/50
Inventor 朱文海姜勇陆文龙赵慧
Owner HANERGY MOBILE ENERGY HLDG GRP CO LTD
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