The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 11, 2011
Filed:
Feb. 23, 2007
Tatsuhiko Suzuki, Osaka, JP;
Hiroki Takeshima, Osaka, JP;
Tatsuhiko Suzuki, Osaka, JP;
Hiroki Takeshima, Osaka, JP;
Panasonic Corporation, Osaka, JP;
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 unitselects, 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 batteryis installed while referring to the lifetime data stored in the lifetime data storing unit, the first diminution in lifetime calculating unitcalculates 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 batteryas a variable, the second diminution in lifetime calculating unitcalculates 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 battery, and the remaining lifetime value calculating unitcalculates the remaining lifetime value by subtracting the first diminution in lifetime and the second diminution in lifetime from the expected lifetime value.