NOVELTY - A voltage detection device (1) comprises voltage detectors (21-25) installed in a high-voltage region connected to the secondary battery (10), and an interruption control unit (41) for controlling interruption operations of the voltage detectors. Each voltage detector is installed to detect a voltage of each block having the unit cells divided for each block. The interruption control unit is installed in a low-voltage region (12) insulated from the high-voltage region (11).    USE - Device for detecting a voltage of a secondary battery used in hybrid vehicle.    ADVANTAGE - The device has reduced cost by reducing the circuits between the voltage-detecting integrated circuits and the main microcomputer.    DETAILED DESCRIPTION - A voltage detection device (1) comprises voltage detectors (21-25) installed in a high-voltage region connected to the secondary battery (10), and an interruption control unit (41) for controlling interruption operations of the voltage detectors. Each voltage detector is installed to detect a voltage of each block having the unit cells divided for each block. The interruption control unit is installed in a low-voltage region (12) insulated from the high-voltage region (11). After resetting all of the voltage detectors by transmitting a trigger signal to all of the voltage detectors, the interruption control unit transmits a control signal in which an address of a voltage detector desired to execute an interruption operation is designated among the voltage detectors. Each voltage detector receives the control signal within a predetermined designated time, executes the interruption operation when an address of its own is designated, and is left reset when the address of its own is not designated.    DESCRIPTION OF DRAWING(S) - The drawing is a block diagram of a voltage detection device.    Voltage detection device (1)    Secondary battery (10)    High- and low-voltage regions (11, 12)    Voltage detectors (21-25)    Interruption control unit (41)