Title:
蓄電システム
Document Type and Number:
Japanese Patent JP5626190
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To quickly identify resistance anomalies in blocks of power storage elements.SOLUTION: A power storage device has a plurality of serially connected power storage elements which charge and discharge. Each power storage element has a current breaker for cutting off a current path therein. The plurality of power storage elements are divided into a plurality of blocks and voltage sensors detect voltage of each of the blocks and output detected results to a controller. A current sensor detects current flowing through the power storage device and outputs a detected result to the controller. The controller computes resistance of the blocks from the voltage values detected by the voltage sensors, the current values detected by the current sensor, and a limit value of possible open voltage for each block during charging and discharging. The controller also identifies a block resistance as abnormal when the corresponding computed resistance is above a threshold value.
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Inventors:
木村 優
真野 亮
石下 晃生
真野 亮
石下 晃生
Application Number:
JP2011264854A
Publication Date:
November 19, 2014
Filing Date:
December 02, 2011
Export Citation:
Assignee:
トヨタ自動車株式会社
International Classes:
G01R31/36; B60L3/00; H01M2/10; H01M10/42; H01M10/44; H01M10/48; H02J7/02
Attorney, Agent or Firm:
Katsufumi Mizuno
Makoto Ide
Hiroshi Suzawa
Makoto Ide
Hiroshi Suzawa