Title:
BATTERY STATE ESTIMATING APPARATUS AND BATTERY STATE ESTIMATING METHOD
Document Type and Number:
WIPO Patent Application WO/2012/011472
Kind Code:
A1
Abstract:
A battery state estimating apparatus, which is an embodiment of the invention, detects the current and terminal voltage of a secondary battery; uses the measurement values (I(k), V(k)) of the detected current and terminal voltage to estimate a terminal value of the secondary battery based on a predetermined battery model; and successively identifies a parameter (φ^(k)) of the battery model such that the difference between the value based on the measurement value of the terminal voltage and the estimated value of the terminal voltage converges to zero. When a particular one (φn) of the identified parameters is equal to or greater than a predetermined first threshold value (δ1), then an upper limitation is performed such that the value of the particular parameter (φn) is set to the first threshold value (δ1).
Inventors:
TAZOE, Kazuhiko (())
田添 和彦 (())
NAKAMURA, Hideo (())
田添 和彦 (())
NAKAMURA, Hideo (())
Application Number:
JP2011/066374
Publication Date:
January 26, 2012
Filing Date:
July 19, 2011
Export Citation:
Assignee:
NISSAN MOTOR CO., LTD. (2 Takara-cho, Kanagawa-ku Yokohama-sh, Kanagawa 23, 〒2210023, JP)
日産自動車株式会社 (〒23 神奈川県横浜市神奈川区宝町２番地 Kanagawa, 〒2210023, JP)
TAZOE, Kazuhiko (())
田添 和彦 (())
日産自動車株式会社 (〒23 神奈川県横浜市神奈川区宝町２番地 Kanagawa, 〒2210023, JP)
TAZOE, Kazuhiko (())
田添 和彦 (())
International Classes:
G01R31/36
Attorney, Agent or Firm:
MIYOSHI, Hidekazu et al. (Toranomon Kotohira Tower, 2-8 Toranomon 1-chome, Minato-k, Tokyo 01, 〒1050001, JP)
Claims: