| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a battery voltage detection device capable of detecting occurrence of erroneous detection of a cell voltage caused by time-dependent deterioration of a voltage detection circuit. <P>SOLUTION: A battery voltage detection device comprises: a voltage detection circuit for detecting a cell voltage of a battery cell; and a voltage processing unit for processing a detection result of the cell voltage. The voltage detection circuit has a plurality of capacitors simultaneously charged by the battery cell, and outputs each of voltages across the terminals of the plurality of capacitors, as the cell voltage, to the voltage processing unit at a different timing after the charge. The voltage processing unit determines whether erroneous detection of the cell voltage has occurred based on a plurality of cell voltages received from the voltage detection circuit at different timings. <P>COPYRIGHT: (C)2013,JPO&INPIT |
