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    • 6. 发明授权
    • Prismatic cell construction
    • 棱镜细胞建设
    • US5958088A
    • 1999-09-28
    • US34483
    • 1998-03-04
    • Viet H. VuAlexander KaplanWilliam T. McHugh
    • Viet H. VuAlexander KaplanWilliam T. McHugh
    • H01M2/02H01M6/10H01M10/04H01M10/0525H01M2/00H01M2/04H01M2/08H01M6/00
    • H01M2/021H01M10/0431H01M10/0525H01M2/0217H01M6/10Y10T29/49108
    • An electrochemical cell is disclosed, having a sealed prismatic housing with two opposing, internal side surfaces defining therebetween an internal cavity having width and length. One of the side surfaces defines a convex arc, and the other of the side surfaces has a center portion opposing the convex arc of the one side surface, and features extending toward the one side surface and straddling the convex arc. An electrode stack is contained within the internal cavity of the housing, having positive and negative electrode sheets arranged in face-to-face relation. The electrode stack is arranged between the side surfaces of the housing such that the stack is retained between the one side surface and the extending features of the other side surface, and deflected to follow the convex arc to maintain contact pressure between the positive and negative electrode sheets. The stack is thus stretched across an inwardly crowned surface of the housing. The invention can, by maintaining good intersheet contact pressure within the stack, provide good overall active material utilization (for high cell capacity) and can help to inhibit housing distension of cells with broad sides. Methods of construction are also disclosed.
    • 公开了一种电化学电池,其具有密封的棱柱形壳体,其具有两个相对的内侧面,在其间限定具有宽度和长度的内部空腔。 侧表面中的一个限定凸弧,另一个侧表面具有与一个侧表面的凸弧相对的中心部分,并且具有朝向一个侧表面延伸且跨过凸弧的特征。 电极堆叠被容纳在壳体的内部空腔内,具有以面对面的关系布置的正极和负极片。 电极堆叠被布置在壳体的侧表面之间,使得堆叠保持在一个侧表面和另一侧表面的延伸特征之间,并且偏转以跟随凸弧以保持正极和负极之间的接触压力 床单。 因此,堆叠被拉伸穿过壳体的向内凸起的表面。 本发明可以通过在堆叠内保持良好的片间接触压力来提供良好的总体活性材料利用(用于高电池容量),并且可以有助于抑制具有宽边的电池的壳体膨胀。 还公开了施工方法。