CN105552386A - 燃料电池反应堆中双极板的气体密封方法 - Google Patents

燃料电池反应堆中双极板的气体密封方法 Download PDF

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CN105552386A
CN105552386A CN201410585266.7A CN201410585266A CN105552386A CN 105552386 A CN105552386 A CN 105552386A CN 201410585266 A CN201410585266 A CN 201410585266A CN 105552386 A CN105552386 A CN 105552386A
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sealing ring
plastic sealing
fuel cell
rubber
bipolar plate
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王斌
徐双林
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LANWAN SCIENCE AND TECHNOLOGY (SHANGHAI) Co Ltd
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LANWAN SCIENCE AND TECHNOLOGY (SHANGHAI) Co Ltd
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    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/30—Hydrogen technology
    • Y02E60/50—Fuel cells

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Abstract

本发明公开了一种燃料电池反应堆中双极板的气体密封方法，即本方法在双极板的基板边缘间隔冲制两圈刻痕槽，两圈刻痕槽外圈设置橡塑密封圈，两块双极板基板重叠后橡塑密封圈受压向内圈延展并且填充位于橡塑密封圈内圈的两圈刻痕槽，实现两块双极板基板之间橡塑密封圈内腔的气体密封。本方法克服了传统双极板气体密封的缺陷，提高了双极板气体密封的效果，保证了燃料电池反应堆的质量及电池的效能。

Description

燃料电池反应堆中双极板的气体密封方法
技术领域
本发明涉及一种燃料电池反应堆中双极板的气体密封方法。
背景技术
燃料电池反应堆中双极板是将质子交换膜燃料电池串联起来组装成一个整体电池堆的关键部件，其一侧与一个单电池的阳极侧接触、另一侧与毗邻的单电池的阴极侧接触。双极板作为燃料电池的关键组件之一，其质量占到整个燃料电池的60%～80%，而其成本则占到总成本的40%～60%。双极板既要承担各个单电池间的导通作用，还要将氧化剂和还原剂分隔，同时双极板面上还需合适的流道场以均匀分散反应气体并且进行气体密封，因此双极板的气体密封是燃料电池反应堆的关键。
目前燃料电池反应堆中双极板的气体密封是一个重大难题，其通常在双极板的基板边缘刻一圈2mm宽的密封槽，在密封槽内设置一圈厚薄对应的橡塑密封圈，两块基板重叠后构成橡塑密封圈内腔的密封，由于橡塑密封圈的厚度极难控制并存在一定的偏差，两块基板重叠后橡塑密封圈内腔的气体从橡塑密封圈厚度较薄处泄漏，导致密封失效，影响了燃料电池反应堆的质量，降低了电池的效能。
发明内容
本发明所要解决的技术问题是提供一种燃料电池反应堆中双极板的气体密封方法，本方法克服了传统双极板气体密封的缺陷，提高了双极板气体密封的效果，保证了燃料电池反应堆的质量及电池的效能。
为解决上述技术问题，本发明燃料电池反应堆中双极板的气体密封方法，在双极板的基板边缘间隔冲制两圈刻痕槽，两圈刻痕槽外圈设置橡塑密封圈，两块双极板基板重叠后橡塑密封圈受压向内圈延展并且填充位于橡塑密封圈内圈的两圈刻痕槽，实现两块双极板基板之间橡塑密封圈内腔的气体密封。
进一步，所述刻痕槽的深度为0.1mm，所述刻痕槽截面两侧的倾斜角度为3～5°。
由于本发明燃料电池反应堆中双极板的气体密封方法采用了上述技术方案，即本方法在双极板的基板边缘间隔冲制两圈刻痕槽，两圈刻痕槽外圈设置橡塑密封圈，两块双极板基板重叠后橡塑密封圈受压向内圈延展并且填充位于橡塑密封圈内圈的两圈刻痕槽，实现两块双极板基板之间橡塑密封圈内腔的气体密封。本方法克服了传统双极板气体密封的缺陷，提高了双极板气体密封的效果，保证了燃料电池反应堆的质量及电池的效能。
附图说明
下面结合附图和实施方式对本发明作进一步的详细说明：
图1为本方法双极板基板上两圈刻痕槽示意图；
图2为本方法中刻痕槽的截面放大示意图。
具体实施方式
如图1所示，本发明燃料电池反应堆中双极板的气体密封方法，在双极板的基板1边缘间隔冲制两圈刻痕槽2，两圈刻痕槽2外圈设置橡塑密封圈3，两块双极板基板重叠后橡塑密封圈3受压向内圈延展并且填充位于橡塑密封圈内圈的两圈刻痕槽2，实现两块双极板基板之间橡塑密封圈3内腔的气体密封。在刻痕槽2冲制时避让分别位于基板1两侧的进气孔11和出气孔12，进气孔11和出气孔12位于两圈刻痕槽2内.
进一步，如图2所示，所述刻痕槽2的深度为0.1mm，所述刻痕槽2截面两侧的倾斜角度为3～5°。
本方法制作方便，实施简单，仅需采用冲制方式在双极板基板边缘制作两圈刻痕槽，依靠双极板重叠后的压力将橡塑密封圈挤压并填充两圈刻痕槽，此时橡塑密封圈本身起到密封的作用，橡塑密封圈边缘将刻痕槽均匀填满后实现进一步的密封，刻痕槽的密封避免了传统双极板内橡塑密封圈厚薄不匀引起密封失效的缺陷，解决了双极板气体密封的难题，为燃料电池反应堆的质量及电池的效能提供了保证。

Claims (2)

1.一种燃料电池反应堆中双极板的气体密封方法，其特征在于：在双极板的基板边缘间隔冲制两圈刻痕槽，两圈刻痕槽外圈设置橡塑密封圈，两块双极板基板重叠后橡塑密封圈受压向内圈延展并且填充位于橡塑密封圈内圈的两圈刻痕槽，实现两块双极板基板之间橡塑密封圈内腔的气体密封。
2.根据权利要求1所述的燃料电池反应堆中双极板的气体密封方法，其特征在于：所述刻痕槽的深度为0.1mm，所述刻痕槽截面两侧的倾斜角度为3～5°。
CN201410585266.7A 2014-10-28 2014-10-28 燃料电池反应堆中双极板的气体密封方法 Withdrawn CN105552386A (zh)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114759212A (zh) * 2022-06-16 2022-07-15 爱德曼氢能源装备有限公司 一种燃料电池用双极板

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1862853A (zh) * 2006-06-13 2006-11-15 南京大学 燃料电池极板
CN101208821A (zh) * 2005-06-28 2008-06-25 标致雪铁龙汽车公司 密封垫和包括贴在双极板上的该密封垫的燃料电池单元
CN201229962Y (zh) * 2008-07-16 2009-04-29 上海蓝蔚科技发展有限公司 氢气反应堆石墨板间的密封结构

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101208821A (zh) * 2005-06-28 2008-06-25 标致雪铁龙汽车公司 密封垫和包括贴在双极板上的该密封垫的燃料电池单元
CN1862853A (zh) * 2006-06-13 2006-11-15 南京大学 燃料电池极板
CN201229962Y (zh) * 2008-07-16 2009-04-29 上海蓝蔚科技发展有限公司 氢气反应堆石墨板间的密封结构

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114759212A (zh) * 2022-06-16 2022-07-15 爱德曼氢能源装备有限公司 一种燃料电池用双极板
CN114759212B (zh) * 2022-06-16 2022-09-16 爱德曼氢能源装备有限公司 一种燃料电池用双极板

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Application publication date: 20160504