CN108215360A - 一种mwt组件的层压方法 - Google Patents

一种mwt组件的层压方法 Download PDF

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CN108215360A
CN108215360A CN201711453568.9A CN201711453568A CN108215360A CN 108215360 A CN108215360 A CN 108215360A CN 201711453568 A CN201711453568 A CN 201711453568A CN 108215360 A CN108215360 A CN 108215360A
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mwt
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孙明亮
张珂
路忠林
盛雯婷
张凤鸣
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Nanjing Day Care Pv Polytron Technologies Inc
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Abstract

本发明公开了一种MWT组件的层压方法，在层压过程中，采用双腔层压机，双腔分别为一腔和二腔，MWT组件先后经过一腔和二腔层压，对一腔预设较低温度，对二腔预设较高温度。本发明所提供的MWT组件的层压方法，一腔层压温度更低，有效减小绝缘层EPE的收缩偏移，保证导电胶实现电池片与导电芯板形成回路，大幅提高生产的良率，为企业创造经济价值。

Description

一种MWT组件的层压方法
技术领域
本发明涉及一种层压方法，尤其是一种MWT组件的层压方法，属于MWT太阳能电池组件应用技术领域。
背景技术
MWT光伏组件是一种基于全新的金属箔电路(即导电芯板)设计的光伏组件。MWT背接触电池的正负电极点都分布在电池片的背面，电池片通过导电胶和导电芯板互联从而形成完整的导电回路。电池片与导电芯板之间设置为EPE绝缘层，所述绝缘层上设有多个保证导电胶实现电池片与导电芯板板形成回路的开孔，其开孔位置与导电胶胶点、电池片电极点一一对应。常规层压工艺层压温度较高，高温下EPE绝缘材料收缩大，易导致EPE收缩偏移覆盖导电胶，阻断电池片与导电芯板之间的回路，导致成品组件出现各类不良。
发明内容
发明目的：针对现有层压工艺所存在的问题与不足，本发明提供一种适用于MWT光伏组件的层压方法，其目的在于，先低温层压后高温层压，低温下层压可减小EPE绝缘层的收缩，保证导电胶实现电池片与导电芯板形成回路，提高了生产的良率，为企业创造经济价值。
技术方案：一种MWT组件的层压方法，在层压过程中，采用双腔层压机，双腔分别为一腔和二腔，MWT组件先后经过一腔和二腔层压，对一腔预设较低温度，对二腔预设较高温度。
进入层压机前的MWT组件叠层顺序从下至上依次为：玻璃、EVA膜、电池片、EPE绝缘层、导电芯板、EVA膜、背板。导电芯板印刷的导电胶位置与EPE绝缘层开孔、电池片电极点位置一一对应。
MWT组件经过一腔称为一腔低温预层压；组件流入层压机一腔，在较低温度下抽真空并层压；低温层压可有效减小绝缘层EPE的收缩，保证导电胶实现电池片与导电芯板形成回路；
MWT组件经过二腔称为二腔高温层压；组件流入层压机二腔，高温下抽真空并层压，提高EVA封装材料的交联度。
有益效果：与现有技术相比，本发明所提供的MWT组件的层压方法，具有如下优点：一腔层压温度更低，有效减小绝缘层EPE的收缩偏移，保证导电胶实现电池片与导电芯板形成回路，大幅提高生产的良率，为企业创造经济价值。
附图说明
图1为本发明实施例的EPE绝缘层结构示意图；
图2为本发明实施例的组件叠层结构示意图。
图中，1为EPE绝缘层，2为EPE绝缘层上的开孔，3为导电芯板上印刷的导电胶，4为导电芯板，5为电池片，6为EVA膜，7为玻璃，8为背板。
具体实施方式
下面结合具体实施例，进一步阐明本发明，应理解这些实施例仅用于说明本发明而不用于限制本发明的范围，在阅读了本发明之后，本领域技术人员对本发明的各种等价形式的修改均落于本申请所附权利要求所限定的范围。
MWT组件的层压方法，在层压过程中，采用双腔层压机，双腔分别为一腔和二腔，MWT组件先后经过一腔和二腔层压，对一腔预设较低温度，参数设置：温度100～140℃，层压时间120～180S，对二腔预设较高温度，参数设置：温度145～155℃，层压时间500～600S。
进入层压机前的MWT组件叠层顺序从下至上依次为：玻璃7、EVA膜6、电池片5、EPE绝缘层2、导电芯板4、EVA膜6、背板8。导电芯板4印刷的导电胶3位置与EPE绝缘层1开孔2、电池片5电极点位置一一对应。
MWT组件经过一腔称为一腔低温预层压；组件流入层压机一腔，在较低温度下抽真空并层压；低温层压可有效减小EPE绝缘层1的收缩，保证导电胶3实现电池片5与导电芯板4形成回路；
MWT组件经过二腔称为二腔高温层压；组件流入层压机二腔，高温下层压，提高EVA封装材料的交联度。
一腔层压前需在真空状态下保持时间为330～420S，层压时，一二腔下室为真空状态。

Claims (7)

1.一种MWT组件的层压方法，其特征在于，在层压过程中，采用双腔层压机，双腔分别为一腔和二腔，MWT组件先后经过一腔和二腔层压，对一腔预设较低温度，对二腔预设较高温度。
2.如权利要求1所述的MWT组件的层压方法，其特征在于，进入层压机前的MWT组件叠层顺序从下至上依次为：玻璃、EVA膜、电池片、EPE绝缘层、导电芯板、EVA膜、背板。
3.导电芯板印刷的导电胶位置与EPE绝缘层开孔、电池片电极点位置一一对应。
4.如权利要求1所述的MWT组件的层压方法，其特征在于，MWT组件经过一腔称为一腔低温预层压；组件流入层压机一腔，在较低温度下抽真空并层压。
5.如权利要求1所述的MWT组件的层压方法，其特征在于，MWT组件经过二腔称为二腔高温层压；组件流入层压机二腔，高温下抽真空并层压。
6.如权利要求1所述的MWT组件的层压方法，其特征在于，一腔层压温度为100~140℃，层压时间为120~180S。
7.如权利要求1所述的MWT组件的层压方法，其特征在于，二腔层压温度为145~155℃，层压时间为500~600S。
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Cited By (6)

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CN109671785A (zh) * 2018-12-25 2019-04-23 江苏日托光伏科技股份有限公司 一种mwt导电胶印刷方法
CN109742188A (zh) * 2018-12-29 2019-05-10 江苏日托光伏科技股份有限公司 一种mwt透明组件的制备方法及应用
CN109827645A (zh) * 2018-12-26 2019-05-31 江苏日托光伏科技股份有限公司 一种mwt组件导电胶定额测试方法
CN109980034A (zh) * 2019-03-26 2019-07-05 厦门冠宇科技股份有限公司 布基单晶硅太阳能折叠板的层压工艺
CN114335221A (zh) * 2021-12-31 2022-04-12 常州华耀光电科技有限公司 双玻太阳能组件层压工艺
CN114709274A (zh) * 2022-03-04 2022-07-05 江苏日托光伏科技股份有限公司 一种集成绝缘层的mwt光伏组件导电芯板及其制造方法

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Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109671785A (zh) * 2018-12-25 2019-04-23 江苏日托光伏科技股份有限公司 一种mwt导电胶印刷方法
CN109827645A (zh) * 2018-12-26 2019-05-31 江苏日托光伏科技股份有限公司 一种mwt组件导电胶定额测试方法
CN109827645B (zh) * 2018-12-26 2021-06-18 江苏日托光伏科技股份有限公司 一种mwt组件导电胶定额测试方法
CN109742188A (zh) * 2018-12-29 2019-05-10 江苏日托光伏科技股份有限公司 一种mwt透明组件的制备方法及应用
CN109980034A (zh) * 2019-03-26 2019-07-05 厦门冠宇科技股份有限公司 布基单晶硅太阳能折叠板的层压工艺
CN114335221A (zh) * 2021-12-31 2022-04-12 常州华耀光电科技有限公司 双玻太阳能组件层压工艺
CN114709274A (zh) * 2022-03-04 2022-07-05 江苏日托光伏科技股份有限公司 一种集成绝缘层的mwt光伏组件导电芯板及其制造方法
CN114709274B (zh) * 2022-03-04 2024-01-23 江苏日托光伏科技股份有限公司 一种集成绝缘层的mwt光伏组件导电芯板及其制造方法

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