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Title:
FAILURE DETECTION SYSTEM OF VOLTAGE DETECTION CIRCUIT
Document Type and Number:
Japanese Patent JP2004177208
Kind Code:
A
Abstract:

To precisely determine the presence or absence of any failure on a voltage detection circuit while inhibiting that device configuration is complicated.

When it is determined that a cell voltage of any capacitor cell exceeds a prescribed regenerative limit voltage VR, a control unit 17 anticipates the total voltage (release determination voltage SVL) when the cell voltage of the capacitor cell reaches a prescribed determination voltage VT below the regenerative limit voltage VR, based on a detected total voltage detection value SVE. When it is detected that the detection value SVE is below the voltage SVL in the state that it is continued that a cell voltage of any capacitor cell exceeds a prescribed voltage VR, a control unit 17 determines that the detection value of the cell voltage of the capacitor cell is abnormal, and determines that failure is generated in a cell voltage detection circuit of a protective device 16.


Inventors:
Kato, Shinji
Yamamoto, Koichi
Application Number:
JP2002000342215
Publication Date:
June 24, 2004
Filing Date:
November 26, 2002
Export Citation:
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Assignee:
HONDA MOTOR CO LTD
International Classes:
G01R35/00; G01R31/00; H01M10/48; H02J7/00; H02J7/02; (IPC1-7): G01R35/00; G01R31/00; H01M10/48; H02J7/00; H02J7/02
Attorney, Agent or Firm:
志賀 正武
高橋 詔男
青山 正和
鈴木 三義
西 和哉
村山 靖彦