Electricity: measuring and testing – Electrolyte properties – Using a battery testing device
Reexamination Certificate
2007-02-23
2011-10-11
Tso, Edward (Department: 2858)
Electricity: measuring and testing
Electrolyte properties
Using a battery testing device
C324S432000, C320S132000
Reexamination Certificate
active
08035395
ABSTRACT:
A battery life predicting device and a battery life predicting method capable of accurately predict the lifetime of storage batteries are provided. The expected lifetime value selecting unit7selects, as an expected lifetime value, a lifetime value that corresponds to the load power applied by the storage battery during discharge and the ambient temperature of the location where the storage battery3is installed while referring to the lifetime data stored in the lifetime data storing unit5, the first diminution in lifetime calculating unit12acalculates the first diminution in lifetime based on a natural logarithm function that takes the time obtained by converting the number of discharge cycles of the storage battery3as a variable, the second diminution in lifetime calculating unit12bcalculates the second diminution in lifetime from the mean value of the storage battery temperatures during charging, discharging or an idle state, the ambient temperature and the time elapsed after the installation of the storage battery3, and the remaining lifetime value calculating unit12ccalculates the remaining lifetime value by subtracting the first diminution in lifetime and the second diminution in lifetime from the expected lifetime value.
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Suzuki Tatsuhiko
Takeshima Hiroki
McDermott Will & Emery LLP
Panasonic Corporation
Ramadan Ramy
Tso Edward
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