Laminate packaging flat cell
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EXAMPLE 1
[0060]The laminate packaging flat cell shown in FIG. 1A was manufactured by use of laminate films, in each of which the thermal welding films were polypropylene and the metal film was aluminum.
[0061]For the electrodes, positive electrodes using LiMn2O4 as a positive electrode active material and negative electrodes using amorphous carbon as a negative electrode active material were used. For the positive terminal lead, an Al plate having a thickness of 150 μm was used. For the negative terminal lead, a Ni plate having a thickness of 150 μm was used. Each of the positive and negative terminal leads were 45 mm wide and 40 mm long. In each of the electrode terminal leads, three through-holes, each having a size of 5 mm×3 mm, were arrayed in one row at an interval of 7.5 mm. The ratio of the cross-sectional area of the through-holes to the cross-sectional area of each electrode terminal lead was 33%.
[0062]Adhesive layers formed of modified polypropylene, each having an area of 10
Example
EXAMPLE 2
[0064]Regarding the through-holes provided in each electrode terminal lead, four or five through-holes, each having a size of 4 mm×1 mm, were arrayed in each row at an interval of approximately 6 mm. Two of the described rows were provide in each electrode terminal lead. In a similar way to Example 1 except for the above, a laminate packaging flat cell was fabricated. The ratio of the cross-sectional area of the through-holes to the cross-sectional area of each terminal lead was 44%.
Example
EXAMPLE 3
[0065]An Al plate having a thickness of 300 μm was used for the positive terminal lead, and a Ni plate having a thickness of 300 μm was used for the negative terminal lead. In a similar way to Example 1 except for the above, a laminate packaging flat cell was fabricated.
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