Login| Sign Up| Help| Contact|

Patent Searching and Data


Title:
APPARATUS AND METHOD FOR DETECTING ANOMALY OF BATTERY VOLTAGE DETECTION DEVICE
Document Type and Number:
Japanese Patent JP2007285714
Kind Code:
A
Abstract:

To provide an apparatus and a method for detecting anomalies of a battery voltage detection device and capable of accurately detecting anomalies of the battery voltage detection device.

The battery voltage detection device 50 includes both a capacitative element C1 connected to a battery block B1 in parallel via power lines PL1 and PL2 according to the conduction of switching circuits SW1 and SW2 and a voltage detection part for detecting an inter-terminal voltage Vc of the capacitative element C1 to be supplied with a battery voltage Vb1 from the battery block B1 and charged. A detection device anomaly detection part 36 is provided with both an inter-terminal voltage acquisition part for acquiring the detected inter-terminal voltage Vc of the capacitative element and an anomaly determination part for determining anomalies of the battery voltage detection device 50 on the basis of a time constant in temporal changes of the acquired inter-terminal voltage Vc of the capacitative element C1.

COPYRIGHT: (C)2008,JPO&INPIT


Inventors:
KAWAI HIROKAZU
Application Number:
JP2006109826A
Publication Date:
November 01, 2007
Filing Date:
April 12, 2006
Export Citation:
Click for automatic bibliography generation   Help
Assignee:
TOYOTA MOTOR CORP
International Classes:
G01R31/02; B60L3/00; G01R19/165; G01R31/04; G01R31/36; H02J7/00
Attorney, Agent or Firm:
Kuro Fukami
Toshio Morita
Tadashi Muto