| 摘要 |
<p>A voltage detection device connects the positive electrodes of unit cells (BT1 to BT4) and terminals (T1 to T4) of a multiplexer (12) via connection lines (L1 to L4), respectively, and includes first switches (SW11 to SW14) between the connection lines and the unit cells. The voltage detection device connects first to fourth series-connected circuits (N1 to N4) to the respective connection lines to apply reference voltages to the connection lines. Subsequently, in a state where the first switches (SW11 to SW14) are turned off, reference voltages are applied to the respective connection lines and each of the reference voltages is selected by the multiplexer (12), level-shifted, and then digitized by an A/D converter (13). Based on the digitized voltages, the voltage detection device determines whether or not each of the multiplexer, level shifter, and A/D converter is nonconformity.</p> |
