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. 15, 2000
Filed:
Oct. 07, 1998
Yoshiaki Kikuchi, Toyota, JP;
Toshiyuki Sekimori, Toyota, JP;
Fumihiko Asakawa, Toyota, JP;
Susumu Ukita, Nagoya, JP;
Yoshimi Shoji, Takahama, JP;
Toshiaki Nakanishi, Toyohashi, JP;
Tadao Kimura, Kobe, JP;
Tomoya Katoh, Nagoya, JP;
Toyota Jidosha Kabushiki Kaisha, Toyota, JP;
Matsushita Electric Industrial Co., Ltd., Osaka, JP;
Denso Corporation, Kariya, JP;
Abstract
Variation of the charged amount among battery blocks composing a battery assembly is detected. By subtracting the detected value of the variation from the width between the upper limit value and the lower limit value of the charged amount, the movable range of the charged amount is found. The position of the present charged amount is detected as the state of charge. For example, it is arranged that both ends of the movable range are 0% and 100%, and that the movable range is the full scale. Then, the position of the charged amount on this scale is specified by the ratio %. The detection of the state of charge in which the variation in charged amount and the change of the movable range are considered, is performed, and on the basis of this state of charge, a preferable charge and discharge control is performed.