CN106393940A - 一种pem燃料电池双极板粘结方法 - Google Patents

一种pem燃料电池双极板粘结方法 Download PDF

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CN106393940A
CN106393940A CN201610776000.XA CN201610776000A CN106393940A CN 106393940 A CN106393940 A CN 106393940A CN 201610776000 A CN201610776000 A CN 201610776000A CN 106393940 A CN106393940 A CN 106393940A
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bipolar plates
component
fuel cell
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pem fuel
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吕登辉
雷杰
雷一杰
梁峰
胡小彪
黄璐
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WUHAN HIMALAYA PHOTOELECTRIC TECHNOLOGY Co Ltd
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    • B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
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    • C09J163/00—Adhesives based on epoxy resins; Adhesives based on derivatives of epoxy resins
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
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Abstract

本发明提供了一种PEM燃料电池用双极板粘结方法。该方法包括以下几个步骤：(1)根据双极板粘结区域的形状，设计相应的喷涂图案。(2)导入双组份胶，启动全自动双组份喷涂机，将双组份胶喷涂到双极板待粘结区域。(3)将喷涂完胶的双极板对合，放在热压机上热压。与现有技术相比，本发明可极大缩短双极板粘结操作的时间，提高粘结效果以及生产效率。

Description

一种PEM燃料电池双极板粘结方法
技术领域
本发明涉及一种涂胶效率高、固化时间短，粘结效果好的PEM燃料电池双极板粘结方法。
背景技术
PEM燃料电池是燃料电池的一种，是新型的能源处理方式，具有工作温度低、无污染、无腐蚀、比功率大、启动迅速等优点，已经成为能源领域研究的热点之一。PPEM燃料电池主要工作过程为：一、氢气和氧气通过双极板，分别到达阳极和阴极，并透过扩散层到达催化层；二、在阳极催化剂的作用下，氢气解析为氢离子和电子，氢离子以水合质子的形式，在质子交换膜中从一个磺酸基转移到另一个磺酸基，最后到达阴极；三、在阴极催化剂的作用下，氧气与氢离子、电子反应生成水。构成PEM燃料电池的关键部件是电极、质子交换膜和双极板。其中双极板又称集流板，包括阴极板和阳极板。阴极板和阳极板中间是冷却通道，承担着整个燃料电池的散热和排水功能。阴极板和阳极板之间良好的粘结是PEM燃料电池高效运行的保障。目前PEM燃料电池双极板的粘结方法主要是人工涂胶，室温固化。
人工涂胶具有以下不足：一、涂胶效率低，在双极板粘结区域涂胶，涂胶速度慢，人工成本大。二、涂胶量很难控制，涂胶量过少会导致粘结效果不好，易造成漏气；涂胶量过多，会导致胶流到双极板内部或边缘，一方面会阻塞双极板流道，影响双极板的排水和散热，另一方面会影响双极板的测试、美观。此外涂胶量过多还会使涂胶厚度大，导致双极板电阻增大。
室温固化不足之处是固化时间长，一般超过12小时，会导致整个双极板密粘结操作时间长，不适于产品的工业化和规模化生产。
发明内容
本发明的目的就是为了克服上述现有技术存在的不足，提供了一种涂胶效果好，可大幅度缩短双极板粘结操作时间的PEM燃料电池双极板粘结方法。
为了达到本发明的目的，技术方案如下：
(1)采用静电除尘器清除双极板的阴极板和阳极板的灰尘；
(2)根据双极板粘结区域的形状，在全自动双组份喷涂机控制器上设计相应的喷涂图案，安装双组份胶，设置合适的出胶量，启动全自动双组份喷涂机，将双组份胶喷涂在双极板待粘结的区域；
(3)将喷完胶的阴极板和阳极板对合，放在热压机上热压；
(4)进一步，热压温度为60～120℃；
(5)进一步，热压压力为0.1～0.6MPa；
(6)进一步，热压时间为20min～120min；
(7)双极板热压之后，冷却，得到粘结好的双极板。
(8)所述的粘结胶为2020DST双组份胶，该双组份胶包括A组分和B组分,其中A组分为环氧树脂,组分为B固化剂,使用时,A组份和B组份的质量比为(1.2～3):1。
(9)所述的粘结胶的厚度为5～50μm。
本发明具有的有益效果：
(1)改变了人工在双极板粘结区域涂胶的方法，采用全自动双组份喷涂机喷涂方法，大大提高了胶的喷涂效果和效率，降低了人工成本，适合产品的工业化和规模化生产。(2)采用热压机热压，缩短了双组份胶的固化时间，从而缩短了双极板粘结操作的时间。(3)密封胶厚度均匀且薄，降低了双极板的接触电阻，提高了双极板的导电性。
具体实施方式
下面结合实施例对本发明作进一步描述，但本发明的保护范围不仅仅局限于实施例。
实施例1
(1)采用除尘器清除双极板的阴极板和阳极板上的灰尘，有利于双组份胶在双极板密封槽上的吸附；
(2)根据双极板粘结区域的形状，在全自动双组份喷涂机控制器上设计相应的喷涂图案，安装双组份胶，启动全自动双组份喷涂机，将双组份胶喷涂在阴极板和阳极板的粘结区域；
(3)将喷涂完胶的阴极板和阳极板对合，放在热压机上，设置热压温度为90℃，压力为0.15MPa，热压时间30min；
(4)双极板热压之后，冷却，得到粘结好的双极板。
最后应说明的是：以上实施例仅用以说明本发明而并非限制本发明所描述的技术方案，因此，尽管本说明书参照上述的各个实施例对本发明已进行了详细的说明，但是，本领域的普通技术人员应当理解，仍然可以对本发明进行修改或等同替换，而一切不脱离本发明的精神和范围的技术方案及其改进，其均应涵盖在本发明的权利要求范围中。

Claims (8)

1.一种PEM燃料电池用双极板粘结方法，其特征在于，包括如下步骤
(1)采用静电除尘器清除双极板的阴极板和阳极板的灰尘；
(2)根据双极板粘结区域的形状，在全自动双组份喷涂机控制器上设计相应的喷涂图案，安装双组份胶，设置合适的出胶量，启动全自动双组份喷涂机，将双组份胶喷涂在双极板待粘结的区域；
(3)将喷完胶的阴极板和阳极板对合，放在热压机上，设置热压温度为60～120℃，压力为0.1～0.6MPa，热压时间为20min～120min；
(4)双极板热压之后，冷却，得到粘结效果良好的双极板。
2.根据权利要求1所述的一种PEM燃料电池用双极板粘结方法，其特征在于采用全自动双组份喷涂机，将双组份胶喷涂在双极板待粘结区域。
3.根据权利要求1所述的一种PEM燃料电池用双极板粘结方法，其特征在于粘结胶为2020TDS双组份胶，该双组份胶包括A组分和B组分,其中A组分为环氧树脂，B组分为固化剂,使用时,A组份和B组份的质量比为(1.2～3):1。
4.根据权利要求1所述的一种PEM燃料电池用双极板粘结方法，其特征在于双极板喷涂胶后放在热压机上热压。
5.根据权利要求1所述的一种PEM燃料电池用双极板粘结方法，其特征在于热压温度为60～120℃。
6.根据权利要求1所述的一种PEM燃料电池用双极板粘结方法，其特征在于热压压力为0.1～0.6MPa。
7.根据权利要求1所述的一种PEM燃料电池用双极板粘结方法，其特征在于热压时间为20min～120min。
8.根据权利要求1所述的一种PEM燃料电池用双极板粘结方法，其特征在于，所述粘结胶的厚度为5～50μm。
CN201610776000.XA 2016-08-30 2016-08-30 一种pem燃料电池双极板粘结方法 Pending CN106393940A (zh)

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Cited By (4)

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Publication number Priority date Publication date Assignee Title
CN108336372A (zh) * 2017-12-29 2018-07-27 上海神力科技有限公司 一种燃料电池用双极板密封工艺
CN108365234A (zh) * 2017-12-29 2018-08-03 上海神力科技有限公司 一种燃料电池双极板粘结方法
CN109286023A (zh) * 2018-09-27 2019-01-29 深圳市南科燃料电池有限公司 一种双极板及其黏胶组装方法
CN109449347A (zh) * 2018-12-28 2019-03-08 中国重汽集团济南动力有限公司 一种锂离子动力电池模组及其设计方法

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US6783883B1 (en) * 1998-06-30 2004-08-31 Manhattan Scientifics, Inc. Gas-proof assembly composed of a bipolar plate and a membrane-electrode unit of polymer electrolyte membrane fuel cells
CN1971988A (zh) * 2005-09-19 2007-05-30 通用汽车环球科技运作公司 用于燃料电池隔板的持久耐用的导电粘合接头
CN103682374A (zh) * 2012-09-12 2014-03-26 上海力富新能源科技有限公司 一种质子交换膜燃料电池用双极板的密封方法

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108336372A (zh) * 2017-12-29 2018-07-27 上海神力科技有限公司 一种燃料电池用双极板密封工艺
CN108365234A (zh) * 2017-12-29 2018-08-03 上海神力科技有限公司 一种燃料电池双极板粘结方法
CN109286023A (zh) * 2018-09-27 2019-01-29 深圳市南科燃料电池有限公司 一种双极板及其黏胶组装方法
CN109449347A (zh) * 2018-12-28 2019-03-08 中国重汽集团济南动力有限公司 一种锂离子动力电池模组及其设计方法
CN109449347B (zh) * 2018-12-28 2023-12-08 中国重汽集团济南动力有限公司 一种锂离子动力电池模组及其设计方法

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Application publication date: 20170215