| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a voltage detection device capable of inexpensively detecting terminal voltages of arbitrary battery cells, and to provide a battery module including the voltage detection device, a battery system, an electric vehicle, a mobile body, a power storage unit, and a power supply device. <P>SOLUTION: N battery cells B1 to B5 are connected to a low potential measuring LSI chip 20, and a plurality of battery cells B6 to B8 having potential higher than that of the battery cells B1 to B5 are connected to a high potential measuring LSI chip 30. An input terminal of a selector SA2 is connected to an output terminal of a differential amplifier 33 in the high potential measuring LSI chip 30 so as to receive a differential voltage detected by the differential amplifier 33 in the high potential measuring LSI chip 30 instead of the terminal voltage of the (N+1)th battery cell B6. An input terminal of a selector SA1 is connected to a minus electrode of the battery cell B6 so that potential equal to reference potential VSS1 of the low potential measuring LSI chip 20 is applied. <P>COPYRIGHT: (C)2013,JPO&INPIT |
