Electricity: battery or capacitor charging or discharging – Serially connected batteries or cells – With discharge of cells or batteries
Patent
1992-12-14
1994-08-23
Hickey, R. J.
Electricity: battery or capacitor charging or discharging
Serially connected batteries or cells
With discharge of cells or batteries
320 48, 340636, 324427, G01R 3136, G01N 2746, H02J 710
Patent
active
053410840
ABSTRACT:
In a method and a device for determining and indicating a residual capacity of a battery, a charging amount is measured in a charging mode in which a charger having a sensor for detecting a fully charged state is connected to the battery. If the charging amount in the charging mode is more than a trickle charging amount, the measured charging amount is added to a present charging amount to obtain the present charging amount and a ratio of the present charging amount to a fully charged state is indicated on a display unit. If the charging amount in the charging mode is less than a trickle charging amount, it is judged that the present charging amount is the fully charged amount and this amount is the fully charged state. The device further includes a current-to-voltage converting circuit, an analog-to-digital converter, and an operation control unit such as a MPU connected to the display unit and executing and controlling the operation of the device.
REFERENCES:
patent: 4947123 (1990-08-01), Minezawa
Gotoh Seiji
Orita Kenji
Takayama Tomio
Fujitsu Limited
Hickey R. J.
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