Electricity: battery or capacitor charging or discharging – Serially connected batteries or cells – With discharge of cells or batteries
Patent
1994-03-15
1997-03-04
Nappi, Robert
Electricity: battery or capacitor charging or discharging
Serially connected batteries or cells
With discharge of cells or batteries
320 2, 429 61, H01M 1044
Patent
active
056083068
ABSTRACT:
An apparatus is provided for identifying an individual battery pack includes at least one resistor having a particular resistance value and a supervising unit for reading the particular resistance value of the at least one resistor to determine the individual identity of the battery. A clock is provided which is used to determine the remaining useful life of the battery. Recharging is selectively allowed or prevented, depending on the identify and the remaining useful life. Additionally, the authenticity of the battery pack can be verified by using a random number used as a variable in a mathematical formula stored in the application circuit and the battery and comparing the result of the calculation.
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Hansson Magnus
Holmqvist Peter
Rybeck Nils R. C.
Ericsson Inc.
Nappi Robert
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