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. 01, 1996
Filed:
Nov. 02, 1994
Nobuyuki Kawamura, Okazaki, JP;
Naotake Kumagai, Yokohama, JP;
Tomiji Owada, Okazaki, JP;
Hisamitsu Koga, Okazaki, JP;
Masaaki Kato, Kyoto, JP;
Nobuya Furukawa, Okazaki, JP;
Mitsubishi Jidosha Kogyo Kabushiki Kaisha, Toyko, JP;
Abstract
A remaining capacity meter is provided for an electric vehicle battery. This meter is suited for use in the detection of a remaining capacity of the electric vehicle battery. The meter includes a full charge detection device for detecting whether the battery has been brought into a fully-charged state, a remaining capacity setting device for setting, as a full-charge-time capacity, the remaining capacity of the battery at the time of detection of the fully-charged state by the full charge detection device, a discharge/charge-based correction device for correcting the remaining capacity, which has been set by the remaining capacity setting device, while integrating, with respect to time, a current discharged from or charged into the battery, and a deterioration-based correction device for correcting the fully-charged capacity, which has been set by the remaining capacity setting device, by a deterioration-based correction quantity corresponding to the number of chargings and battery temperatures at the time of the respective chargings. A method for the detection of the remaining capacity of such an electric vehicle battery is also described.