CN101202336B - 燃料电池的金属隔板的制造方法 - Google Patents
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Abstract
一种燃料电池的金属隔板的制造方法,包括:模制第一和第二板以使每块板具有至少一个凹部和至少一个凸部;将密封剂涂在至少一块板上;设置板以使每块板的凹部与另一块板的凸部相对,将板点焊接在一起。密封部可靠近隔板的边缘,在氢气歧管、氧气歧管与冷却剂歧管之间。在密封部还可设有密封剂防渗漏槽。密封部可通过被插入在第一模的凸起与第二模的凹进之间而制成,可将点焊枪插入模具中的一个的导孔中。
Description
技术领域
本发明涉及一种燃料电池的金属隔板的制造方法。
背景技术
在手机、对讲机和笔记本电脑等便携式电子设备中,小型的燃料电池堆可以作为代替电池的适当可选电源。除了不产生污染之外,燃料电池堆还因为不需要再充电而更加便捷。
为制造燃料电池堆,膜电极组件(MEA)由插入二者之间的隔板而分层。隔板均匀地向MEA提供氢气和氧气,并与MEA串联地电连接。
隔板通常由石墨制成。然而,加工石墨的费用高,时间长。
近年来开始使用金属隔板。金属隔板包括用来供应氢气、氧气和冷却剂的流路,并支撑MEA。如果不能保持气密,则冷却剂可能会渗漏而污染MEA,使受到污染的电池没用了。此外,如果氢气渗漏还可能引起火灾。
为了保持气密性,在上、下板的端部之间插入橡胶密封,从而利用橡胶密封的粘附力保持金属隔板的气密性,并将上、下板彼此连接起来。板与板之间被密封且相互接合。
在背景技术部分所公开的信息只是为了更好地理解本发明的背景,而不应该被理解为承认或任何形式地暗示该信息构成本领域技术人员已知的现有技术。
发明内容
本发明的实施方式提供一种燃料电池的金属隔板的制造方法,包括:模制第一板和第二板以使每块板具有至少一个凹部和至少一个凸部;将密封剂涂敷在所述板的至少一块上;设置所述板以使所述第一板的凹部与所述第二板的凸部相对,且所述第一板的凸部与所述第二板的凹部相对;并且将所述板点焊接在一起。
密封部可以在隔板的边缘附近,位于氢气歧管、氧气歧管和冷却剂歧管之间。在密封部还可设有密封剂防渗漏槽。密封部可通过被插入在第一模的凸起与第二模的凹进之间而制成,且点焊枪可插入到模具中的一个的导孔中。
附图说明
下面参考一些示例性实施方式并结合附图对本发明的上述和其它特征进行说明,其中:
图1是示出了根据本发明示例性实施方式的利用点焊进行焊接的金属隔板的透视图;
图2是示出了图1所示隔板的点焊部的示意图;
图3是沿图2中A-A线截取的剖视图,示出了为保持歧管(通道)的气密性的焊接部;
图4是示出了根据本发明一个实例性实施方式的上、下模和隔板的形状的示意图;
图5是横剖视图,示出了根据本发明的一个示例性实施方式的点焊过程的剖视图。
具体实施方式
下面参考附图详细说明本发明的优选实施方式。提供优选实施方式以使本领域技术人员能够充分理解本发明,但是还可以进行多种形式的修改,本发明的保护范围并不局限于这些优选实施方式。
根据本发明的示例性实施方式的金属隔板的模制方法,包括:切割两块板;利用压床(模制)将所得到的板弯曲;将第一板10设置在第二板11的上面,使得在弯曲步骤中所形成的每块板的凹部面向另一块板的凸部。
更具体地,第一板10包括Z字形的凹部和凸部,例如所示的梯形部。第二板11具有与第一板10相同的形状。将第二板11倒转180度以使其凹部与凸部分别与第一板10的相应凸部和凹部邻接。接着将两板10和11连接,形成六边形的冷却剂流路12。在冷却剂流路12之间还设有第一板10的氢气流路13和第二板11的氧气流路14。
各由第一板10和第二板11构成的一对隔板18,通过在其中插入MEA16而叠置。将氧气提供给MEA16上部的氧气电极,将氢气提供给MEA16下部的氢气电极。
参考图4,为保持隔板18的气密性,将第一板10与第二板11彼此叠置,以利用上、下模26、27模制成凹-凸形状。
在上模26下端设有梯形凸起,在下模27的上端设有与该凸起形状相对应的凹部。因此,当向彼此叠置在凸起与凹进之间的第一板10与第二板11的两端加压时,形成梯形的密封部17。
诸如粘性液体密封剂等化合物15,被自动提供至密封部17与槽25之间以防止化合物渗漏。
对槽25的每一侧进行点焊,以将第一板10与第二板11接合起来。在隔板18的一侧沿着从进气歧管向排气歧管的方向以均匀间隔进行点焊,同时在隔板18的另一侧沿着从排气歧管向进气歧管的方向以均匀间隔进行点焊。
将微型点焊枪24穿过上模26的导孔23以对第一板10与第二板11的密封部17进行焊接。下模27包括用于点焊的电极功能。
在点焊过程中,在电极之间设置金属材料,在施加电流时向接触部加压,从而通过接触部产生的电阻热来熔化加压部。因此,在模具26和27中还设有多条冷却剂流路28,该冷却剂流路28用来冷却由上、下模26、27传递的电阻热的。
此外,还可通过涂敷化合物15,并且在氢气歧管22、冷却剂歧管21和氧气歧管20之间进行点焊来保持每条通道的气密性。
通过上述结构,可自动提供化合物15以及用于保持隔板17各边缘和通道的气密性的点焊,从而有利于大规模生产。此外,由于以与隔板相同的梯形形状来制造上、下模,并且从对称位置顺序且同时地进行点焊,所以还可通过模制过程提高隔板的硬度,减小热变形,提供回弹补偿。
另外,还可通过点焊过程来固定隔板18上形成的冷却剂流路12,通过模制修改提供补偿,并且方便了堆叠工艺以提高隔板18的硬度。
尽管已经对本发明的优选实施方式进行了说明,然而本发明并不局限于此。相反地,应该理解本领域技术人员可在不脱离本发明的精神和技术范围内进行各种修改和变形。
Claims (5)
1.一种燃料电池的金属隔板的制造方法,包括:
模制第一板和第二板以使每块板具有至少一个凹部和至少一个凸部;
将密封剂涂敷在所述板的至少一块上;
叠置所述第一板和所述第二板以使所述第一板的凹部与所述第二板的凸部相对,且所述第一板的凸部与所述第二板的凹部相对;
通过将所叠置的板插入第一模的凸起与第二模的凹部之间而形成密封部;并且
以将点焊枪插入所述第一模的导孔中的状态将所述第一板和所述第二板点焊接在一起。
2.如权利要求1所述的方法,其中所述第一板和所述第二板在所述密封部处连接,涂敷所述密封剂包括在所述密封部涂敷所述密封剂。
3.如权利要求1所述的方法,其中所述密封部靠近所述隔板的边缘。
4.如权利要求1所述的方法,其中所述密封部被设置在氢气歧管、氧气歧管和冷却剂歧管之间。
5.如权利要求1所述的方法,其中所述密封部中设置有密封剂防渗漏槽。
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KR1020060126285A KR100901568B1 (ko) | 2006-12-12 | 2006-12-12 | 연료전지용 금속분리판의 제조방법 |
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KR100884073B1 (ko) * | 2007-08-10 | 2009-02-19 | 현대자동차주식회사 | 연료 전지의 금속 분리판 접합용 용접 장치 |
CN101752587A (zh) * | 2008-12-04 | 2010-06-23 | 上海空间电源研究所 | 金属双极板、密封件一体化燃料电池的制备方法 |
DE102009036039B4 (de) * | 2009-08-03 | 2014-04-17 | Reinz-Dichtungs-Gmbh | Bipolarplatte sowie Verfahren zu deren Herstellung |
KR101889550B1 (ko) * | 2010-09-29 | 2018-08-17 | 한국전력공사 | 접합공정을 이용한 고체산화물 연료전지 스택의 분리판 |
CA2815344C (en) | 2010-10-20 | 2016-06-07 | Honda Motor Co., Ltd. | Fuel cell with separator formed by joining two plates having the same outer shape |
JP5236024B2 (ja) * | 2011-01-12 | 2013-07-17 | 本田技研工業株式会社 | 燃料電池 |
JP5399441B2 (ja) * | 2011-05-20 | 2014-01-29 | 本田技研工業株式会社 | 燃料電池 |
KR101337294B1 (ko) * | 2012-04-09 | 2013-12-05 | 태성전자 주식회사 | 저항용접용 박판 적층물 및 그 제조방법 |
GB2509927A (en) | 2013-01-17 | 2014-07-23 | Intelligent Energy Ltd | Flow field plates in fuel cells |
CN103647092B (zh) * | 2013-10-30 | 2016-02-03 | 张勇 | 延长燃料电池寿命的方法和装置 |
KR101816342B1 (ko) * | 2014-12-12 | 2018-01-08 | 현대자동차주식회사 | 연료전지 스택 |
US10297841B2 (en) * | 2015-03-31 | 2019-05-21 | Honda Motor Co., Ltd. | Fuel cell and production apparatus for the fuel cell |
KR101959460B1 (ko) | 2015-05-27 | 2019-03-18 | 주식회사 엘지화학 | 분리판 및 이를 포함하는 연료 전지 스택 |
EP3361538B1 (en) * | 2015-10-06 | 2021-04-07 | Nissan Motor Co., Ltd. | Fuel cell stack |
TWI624989B (zh) | 2016-12-14 | 2018-05-21 | 財團法人工業技術研究院 | 雙極板、燃料電池及燃料電池組 |
FR3073324B1 (fr) * | 2017-11-08 | 2019-10-25 | Commissariat A L'energie Atomique Et Aux Energies Alternatives | Procede utilisant un laser pour le soudage entre deux materiaux metalliques ou pour le frittage de poudre(s), application a la realisation de plaques bipolaires pour piles pemfc |
JP6978996B2 (ja) * | 2018-09-06 | 2021-12-08 | 本田技研工業株式会社 | 接合セパレータの製造方法及び製造装置 |
CN113611888B (zh) * | 2018-12-29 | 2022-11-25 | 戈瑞屋(上海)科技发展有限公司 | 一种燃料电池 |
NL2025282B1 (en) * | 2020-04-06 | 2021-10-27 | Borit N V | Welding bump for laser welding and method of manufacturing a welding bump |
JP7062730B2 (ja) * | 2020-08-07 | 2022-05-06 | 本田技研工業株式会社 | 燃料電池セルユニットの製造方法及び製造装置 |
CN116114089A (zh) * | 2020-09-01 | 2023-05-12 | Tvs电机股份有限公司 | 用于燃料电池堆的双极板组件 |
CN115084569B (zh) * | 2022-06-30 | 2024-01-19 | 上海捷氢科技股份有限公司 | 一种双极板密封结构及燃料电池 |
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- 2006-12-12 KR KR1020060126285A patent/KR100901568B1/ko active IP Right Grant
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- 2007-05-08 JP JP2007123670A patent/JP5187811B2/ja not_active Expired - Fee Related
- 2007-08-09 DE DE102007037650.4A patent/DE102007037650B4/de not_active Expired - Fee Related
- 2007-08-10 US US11/837,422 patent/US8882859B2/en active Active
- 2007-11-16 CN CN2007101869832A patent/CN101202336B/zh not_active Expired - Fee Related
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Also Published As
Publication number | Publication date |
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CN101202336A (zh) | 2008-06-18 |
KR20080054114A (ko) | 2008-06-17 |
US20080134496A1 (en) | 2008-06-12 |
DE102007037650A1 (de) | 2008-06-19 |
KR100901568B1 (ko) | 2009-06-08 |
JP2008147157A (ja) | 2008-06-26 |
US8882859B2 (en) | 2014-11-11 |
DE102007037650B4 (de) | 2018-03-08 |
JP5187811B2 (ja) | 2013-04-24 |
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