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:
Aug. 23, 2005
Filed:
Oct. 16, 2002
Norihiko Hirata, Isehara, JP;
Kenichi Sakai, Hadano, JP;
Yuji Nakada, Fujisawa, JP;
Nissan Motor Co., Ltd., Kanagawa, JP;
Abstract
A capacity indicating device is configured to indicate a fully charged state when full recharging has been conducted even if the battery is degraded; hold the possible traveling distance per segment roughly constant; and make it easy to estimate the possible cruising distance. The capacity indicating device has an indication control unit that: (1) allocates a prescribed portion of the battery capacity of a vehicle to a capacity adjustment region that serves to adjust the battery capacity as it decreases due to degradation of the battery; (2) calculates the degradation degree of the battery based on the detected voltage value and current value; (3) corrects the capacity adjustment region a based on the calculated degradation degree; and (4) indicates the present battery capacity using segments that are not affected by the degradation of the battery.