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:
Nov. 21, 2017
Filed:
Jul. 25, 2014
Hitachi Automotive Systems, Ltd., Hitachinaka-shi, Ibaraki, JP;
Nissan Motor Co., Ltd., Yokohama-shi, Kanagawa, JP;
Hiroshi Morikawa, Hitachinaka, JP;
Yoshinori Aoshima, Hitachinaka, JP;
Masayuki Takada, Hitachinaka, JP;
Kenichiro Tsuru, Hitachinaka, JP;
Shigeyuki Kiyota, Kanagawa, JP;
Yoshiyuki Tanaka, Kanagawa, JP;
Toyoki Iguchi, Kanagawa, JP;
Hiroaki Hashimoto, Kanagawa, JP;
Yasuyuki Takahashi, Kanagawa, JP;
HITACHI AUTOMOTIVE SYSTEMS, LTD., Ibaraki, JP;
NISSAN MOTOR CO., LTD., Kanagawa, JP;
Abstract
A battery control system connected to a battery, which controls charge/discharge at the battery, includes: a current detection unit that measures a current value by detecting a charge/discharge current flowing through the battery; a voltage detection unit that detects a voltage at the battery; a temperature detection unit that detects a temperature at the battery; an effective current value calculation unit that calculates, based upon the current value measured by the current detection unit, an effective current value in a predetermined time window; a time ratio calculation unit that determines a time ratio indicating a ratio of a length of time over which the effective current value has been in excess of a predetermined allowable value during a predetermined specified time period; and a charge/discharge restriction unit that restricts the charge/discharge current based upon the time ratio determined by the time ratio calculation unit.