Title:
BATTERY PACK VOLTAGE DETECTION DEVICE
Document Type and Number:
WIPO Patent Application WO/2012/008449
Kind Code:
A1
Abstract:
The disclosed battery pack voltage detection device connects via connection lines (L1-L4) the positive electrode of each unit cell (BT1-BT4) and each terminal (T1-T4) of the multiplexer (12), and provides first switches (SW11-SW14) between the connection lines and the unit cells. Further, a first through a fourth series-connected circuit (N1-N4) are connected to each connection line, and a reference voltage is applied to each connection line. Subsequently, in a state in which the first switches (SW11-SW14) have been switched to OFF, the reference voltage is applied to each of the connection lines, and this reference voltage is selected in the multiplexer (12) and digitized by an A/D converter (13) after level shifting. On the basis of the digitized voltage, it is determined whether or not there are anomalies in the multiplexer, the level-shift circuit or the A/D converter.
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Inventors:
IZAWA, Takaaki (1500 Mishuku, Susono-sh, Shizuoka 07, 〒4101107, JP)
Application Number:
JP2011/065889
Publication Date:
January 19, 2012
Filing Date:
July 12, 2011
Export Citation:
Assignee:
YAZAKI CORPORATION (4-28, Mita 1-chome Minato-k, Tokyo 73, 〒1080073, JP)
矢崎総業株式会社 (〒73 東京都港区三田１丁目４番２８号 Tokyo, 〒1080073, JP)
矢崎総業株式会社 (〒73 東京都港区三田１丁目４番２８号 Tokyo, 〒1080073, JP)
International Classes:
G01R19/00; G01R19/165; G01R31/36
Attorney, Agent or Firm:
MIYOSHI, Hidekazu et al. (Toranomon Kotohira Tower, 2-8 Toranomon 1-chome, Minato-k, Tokyo 01, 〒1050001, JP)
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Claims:
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