Electricity: battery or capacitor charging or discharging – Serially connected batteries or cells – With discharge of cells or batteries
Patent
1995-02-14
1997-11-11
Tso, Edward
Electricity: battery or capacitor charging or discharging
Serially connected batteries or cells
With discharge of cells or batteries
320 22, 320 48, 429 90, 324426, H01M 1044, H01M 1046, H01M 1048
Patent
active
056868154
ABSTRACT:
In order to optimally control the charging of a rechargeable battery of one or more cells to ensure that full and rapid charge is achieved without damaging the battery, a maximum safe value (or sequence of values during the charging process) for one or more charging parameters is determined during a test charge, and subsequent charges of the battery are performed without exceeding the predetermined maximum value(s) for the charging parameter(s). Among the charging parameters contemplated for use are: the charging voltage potential placed across the battery terminals, the charging current supplied to the battery, the temperature of the battery cell and internal pressure of the battery cell as well as rates of changes of the parameters. In accordance with apparatus for practicing the invention, the value(s) of one or more predetermined maximum parameters are stored, and the corresponding actual charging parameter values are measured during the charging process and compared to the stored values to develop signals for controlling the charging process and thereby maintain the monitored parameter(s) no higher than the predetermined maximum value(s).
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Juul-Hansen Ebbe
Reipur John
Chartec Laboratories A/S
Lechter Michael A.
Phillips James H.
Tso Edward
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