Nickel battery charging method and apparatus

Details Nickel battery charging method and apparatus Nickel battery charging method and apparatus

1998-07-22

1999-11-23

Wong, Peter S.

Electricity: battery or capacitor charging or discharging

Battery or cell discharging

With charging

320132, H02J 700

Patent

active

059906626

ABSTRACT:
Raising the charging acceptability of nickel battery. The setting of the initial SOC (state of charge) of hybrid electric vehicle battery to X% (for example 50%) is performed by two steps. The first one is a constant current charge until a fully charged state (S11, S12). Secondly, a discharging is performed until the target SOC of X% is obtained (S13, S14). This enables the interior part of the nickel positive electrode active particles to be assumed as a charged state so that during normal operation, charging and discharging can be performed relatively in the surface layer. This can increase the efficiency of oxidation-reduction in the nickel positive electrode, thereby raising the charging acceptability.

REFERENCES:
patent: 3888325 (1975-06-01), Reinbeck
patent: 4935318 (1990-06-01), Ikoma et al.
patent: 5621302 (1997-04-01), Shinohara

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