Patent ID: 9310443
Filing Date: 2016-04-12
CPC Classification: G01R,H02J

Claim Text:
1. A voltage detection apparatus, comprising: a plurality of voltage detection units, each of which detects cell voltages of plural cells in each of blocks in a battery module, the each of blocks including the plural cells connected in series; a plurality of power supply circuits, to which power is supplied via power supply lines connected to the blocks respectively; a dark current adjustment unit that adjusts dark currents respectively flowing through the plurality of power supply lines; a plurality of current increase units that increases the dark currents so that the dark currents respectively flowing through the power supply lines from the blocks when the voltage detection apparatus is in a sleep state become a same target value; and a plurality of current detection units which respectively detect the dark currents flowing through the plurality of power supply lines, wherein the plurality of voltage detection units are respectively supplied with the power from the plurality of power supply circuit via the power supply lines; and wherein the dark current adjustment unit includes: