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:
Sep. 16, 2008
Filed:
Nov. 08, 2004
Yukio Tsuchiya, Kanagawa, JP;
Hideyuki Sato, Chiba, JP;
Kazuyasu Nawa, Tokyo, JP;
Sony Corporation, Tokyo, JP;
Abstract
The temperature of a battery cell measured by a temperature measurement means is stored into a measured temperature history storage means for storing a history of temperature. An in-cell temperature inference means extracts a minimum temperature from the history of a predetermined time from the measured temperature history storage means, and infers the minimum temperature as a current temperature within the battery cell. A remaining power calculation means calculates remaining battery power based on the inferred temperature within the battery cell. Instead of directly using the measured temperature for the calculation of the remaining battery power, the inferred temperature within the battery cell is used, whereby even if the measured temperature rises rapidly, it is possible to prevent the phenomenon instantaneous increase of the calculated remaining battery power.