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    • 24. 发明专利
    • FLAT TYPE BATTERY
    • JPS63266773A
    • 1988-11-02
    • JP10249887
    • 1987-04-24
    • MITSUBISHI PETROCHEMICAL CO
    • KAKIZAKI TETSUJINORO MASATAKAYAZAKI TAKAO
    • H01M4/06H01M4/64H01M4/66H01M6/12
    • PURPOSE:To obtain sure contact by using specific conductive films as current collectors of both electrodes. CONSTITUTION:An insulating gasket 2 is put in the inner circumference of a stainless steel positive case 1. A conductive film 3 is placed as a positive current collector on the bottom of the positive case 1. A positive mix 4 molded in a disk having a diameter of 15mm is placed on the film 3, and a separator 6 is arranged between a negative active material 5 and the positive mix 4. A conductive film 7 is placed as a negative current collector between the active material 5 and a negative can 8 which also serves as a negative terminal. The upper end 1a of the case 1 is bent inward to fix the gasket 2. The film 7 is formed by mixing 70-90 wt.%, preferably 75-85 wt.%, ethylene base resin having a density of 0.945 g/cm or more with 30-10 wt.%, preferably 25-15 wt.%, conductive carbon black powder. The contact of the positive mix 4 with the positive case 1, and that of the negative active material 5 with the negative can 8 can be made sure.