Apparatus for discriminating primary and secondary batteries

Details Apparatus for discriminating primary and secondary batteries Apparatus for discriminating primary and secondary batteries

1998-06-11

1999-12-07

Tso, Edward H.

Electricity: battery or capacitor charging or discharging

Means to identify cell or battery type

H01M 1046

Patent

active

059989629

ABSTRACT:
In a portable electronic equipment usable with both primary and secondary batteries, discrimination between primary and secondary batteries is carried out utilizing a difference in discharge characteristics between the primary and secondary batteries. Specifically, a previously acquired battery voltage is compared with a battery voltage after a given period of time, and whether the battery is a primary battery or a secondary battery is determined based on the voltage difference. Charging operation is controlled based on the discrimination results, enabling the secondary battery to be more surely charged.

REFERENCES:
patent: 4577144 (1986-03-01), Hodgman et al.
patent: 4577145 (1986-03-01), Mullersman
patent: 5438248 (1995-08-01), Hyuck
patent: 5600224 (1997-02-01), Mody et al.
patent: 5847539 (1998-12-01), Akiya

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