Patent ID: 7714540
Filing Date: 2010-05-11
Classification: H02J,Y02T

Abstract:
1. An assembled battery apparatus with a voltage detecting device, comprising: an assembled battery including a plurality of single batteries connected in series; a plurality of capacitors provided in pairs with the plurality of single batteries of the assembled battery, each of the capacitors being configured to be charged with a voltage of a respective single battery in the plurality of single batteries; a plurality of sampling switches each of which is provided between a respective capacitor and single battery paired with the capacitor and between the other end of the capacitor and the other end of the single battery paired with the capacitor, such that each sampling switch is connected at a first end to a point connecting adjacent of the plural single batteries together and at a second end to a corresponding of the capacitors; a plurality of transfer switches, each of which has one end connected to one end of the capacitor; a plurality of reference electric potential setting switches, each of which is connected between the other end of the capacitor and a terminal of a ground potential; and a voltage detection control unit having a voltage input end connected to the other ends of the transfer switches to measure a voltage charged in each capacitor from the single battery via the sampling switch, the voltage detection control unit being configured to charge the plurality of capacitors with voltages of the single batteries through the sampling switches simultaneously, and to read individually the voltage charged in each of the capacitors in a state in which a lower electric potential side of the each capacitor is connected to the ground potential.