| 摘要 |
<p>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.</p> |
