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1.
公开(公告)号:US5118574A
公开(公告)日:1992-06-02
申请号:US469428
申请日:1990-06-08
CPC分类号: H01M10/3909 , C04B35/645 , C04B37/005 , C04B37/021 , C04B2235/6581 , C04B2237/10 , C04B2237/343 , C04B2237/405 , C04B2237/406 , C04B2237/76 , C04B2237/80 , C04B2237/82 , Y10T29/4911
摘要: The cathode region of a sodium sulphur cell has hitherto sometimes been sealed by a thin metal member welded at its outer periphery to the metal casing and at its inner periphery to the alpha alumina lid of the electrolyte. The welding operation damages the essential protective coating of the thin metal member. This invention discloses sealing the cathode region with a thin metal member (5) secured to a concentric outer thicker metal member (4), the thin member being sealed to the lid (15) and the thicker member being sealed to the casing (1). The thickness of the outer member eliminates the need for a protective coating so that the combined seal has greater integrity than previous seals.
摘要翻译: PCT No.PCT / GB88 / 00909 Sec。 371日期:1990年6月8日 102(e)日期1990年6月8日PCT提交1988年10月24日PCT公布。 出版物WO89 / 04068 PCT 日期为1989年5月5日。迄今为止,钠硫电池的阴极区域有时被在其外周边焊接到金属外壳的薄金属部件和其内周边与电解质的α氧化铝盖密封。 焊接操作会损坏薄金属部件的基本保护涂层。 本发明公开了一种用固定在同心的外部较厚金属构件(4)上的薄金属构件(5)密封阴极区域,薄壁构件被密封到盖子(15)上,较厚的构件被密封到壳体(1) 。 外部构件的厚度消除了对保护涂层的需要,使得组合密封件具有比先前密封件更好的完整性。