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    Method for sealing an electrochemical cell
    2.
    发明授权
    Method for sealing an electrochemical cell 失效
    密封电化学细胞的方法

    公开(公告)号：US3554813A

    公开(公告)日：1971-01-12

    申请号：US3554813D

    申请日：1969-02-07

    Applicant: ESB INC

    Inventor： FELDHAKE RALPH H

    IPC: H01M2/04 ,  H01M1/00 ,  H01M1/02

    CPC classification number: H01M2/0417 ,  Y10T29/4911

    Abstract: AN ELECTROCHEMICAL CELL HAVING A CYLINDRICAL METALLIC CONTAINER SEALED BY A HARD PLASTIC CLOSURE MADE FROM A COLD-FLOW RESISTANT PLASTIC, E.G. NYLON. THE PLASTIC CLOSURE IS RADIALLY COMPRESSED BY PUSHING IT THROUGH A REDUCING DIE AND INTO THE METALLIC CONTAINER. THE PLASTIC CLOSURE EXPANDS IN THE CONTAINER WITH SUCH FORCE THAT THE UPPER EDGE OF THE CONTAINER IS SLIGHTLY DEFORMED OUTWARDLY. THE UPPER EDGE OF THE CONTAINER IS CRIMPED OVER UPON THE TOP OF THE CLOSURE BY MEANS OF A CLOSING DIE WHICH AXIALLY COMPRESSES THE CLOSURE BETWEEN THE UPPER EDGE OF THE CONTAINER AND A BEAD ROLLED INTO THE CONTAINER. THE AXIAL COMPRESSION DEVELOPS AN AXIAL FORCE IN THE PLASTIC CLOSURE, INCREASES THE RADIAL FORCE EXERTED BY THE PLASTIC CLOSURE UPON THE CONTAINER, AND THE COMPRESSION OF THE UPPER EDGE OF THE CONTAINER UPON THE CLOSURE INCREASES THE SEALING SURFACE BY FORMING BOTH AN AXIAL AND RADIAL SEALING AREA.

    BATTERY HAVING POLYAMIDE HOT MELT ADHESIVE SEAL
    4.
    发明专利
    BATTERY HAVING POLYAMIDE HOT MELT ADHESIVE SEAL 未知

    公开(公告)号：CA1006573A

    公开(公告)日：1977-03-08

    申请号：CA206589

    申请日：1974-08-08

    Applicant: ESB INC

    Inventor： FELDHAKE RALPH H

    IPC: H01M2/02 ,  H01M2/08 ,  H01M6/48

    Abstract: Casing joints for batteries comprising a stack of positive and negative electrodes separated by layers of electrolyte impregnated sheet and cell separation plate in a casing of metal with a plastic lining, where the rims of the casing plates, separator plates and electrolyte frames are bonded into a multiple joint by an adhesive polyamide of viscosity 1-100 poise at 175 degrees C and ratios of tensile strength/elongation to break in kg/cm2 as follows: >=0.21 at 21 degrees C; >=0.14 at 32-43 degrees C; >=0.07 at 52-60 degrees C. Suitable for batteries incorporating acidic electrolytes. Polyamide adhesives endure the shear stresses and strains due to differential thermal expansion of the metallic and non metallic battery components better than adhesives of e.g. ethylene-vinyl acetate copolymers despite higher initial modulus of latter; roughly halves battery reject rates and water losses after 14 days at 50 degrees C.

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