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. 24, 2010
Filed:
Jan. 16, 2008
Hiroshi Arita, Hitachi, JP;
Katsumi Ishikawa, Hitachinaka, JP;
Sunao Funakoshi, Kasumigaura, JP;
Masahiro Nagasu, Hitachinaka, JP;
Hiroshi Arita, Hitachi, JP;
Katsumi Ishikawa, Hitachinaka, JP;
Sunao Funakoshi, Kasumigaura, JP;
Masahiro Nagasu, Hitachinaka, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
In a conventional hybrid scheme used to mount a rechargeable battery in a motor vehicle, store into the battery the electric power that has been obtained via a regenerative brake, and utilize the power during acceleration of the vehicle, when a temperature rise of the battery due to charging or discharging causes a temperature of the battery to stay outside a defined range, it has been absolutely necessary to stop the battery charge or discharge, and fuel efficiency has decreased. This invention predicts a charge level and temperature of a rechargeable battery from the cruising input/output power requirements calculated from route information and historical records of cruising, prevents a stoppage of the battery by calculating chronological engine output and brake control data for the temperature to stay within a defined range, and hence improves fuel efficiency.