Nickel-metal hydride storage battery and assembly of the same

Details Nickel-metal hydride storage battery and assembly of the same Nickel-metal hydride storage battery and assembly of the same

2005-10-25

2005-10-25

Yuan, Dah-Wei (Department: 1745)

Chemistry: electrical current producing apparatus, product, and

Current producing cell, elements, subcombinations and...

Electrode

C429S163000, C429S218100, C429S218200

Reexamination Certificate

active

06958200

ABSTRACT:
In a nickel-metal hydride storage battery comprising: an electrode plate assembly including current collectors on the top and bottom portions; an alkaline electrolyte; and a battery case having a substantially rectangular parallelepiped part for accommodating the electrode plate assembly and the alkaline electrolyte, the capacity degradation due to deep discharge and reverse charge inherent to a nickel-metal hydride storage battery is suppressed by setting the amount of the alkaline electrolyte at 70 to 90% of the volume V of the residual space in the battery represented by the equation (1): V=S·h−(V1+V2+V3+V4) (1), where S is the cross sectional area of the inner space of the substantially rectangular parallelepiped part, h is the height of the electrode plate assembly, V1is the true volume of the positive electrode plate, V2is the true volume of the negative electrode plate, V3is the true volume of the separator, and V4is the volume of the two current collectors.

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