Abstract: Provided is a battery monitoring device for a battery including a plurality of battery stacks. The battery monitoring device includes a plurality of monitoring modules, a power supply device, and a determination module. The power supply device includes a plurality of first power lines, a first switch, a first capacitor, a second power line, a plurality of second switches, and a plurality of second capacitors. The determination module is configured to determine a state of power supply from the power supply device to the monitoring modules. Each of the first power lines includes a first positive electrode line and a first negative electrode line, and is connected to the monitoring modules so as to supply power to the monitoring modules. The second power line includes a second positive electrode line and a second negative electrode line, and is configured to receive a predetermined amount of power.

Abstract: Provided is a battery monitoring device for a battery including a plurality of battery stacks. The battery monitoring device includes a plurality of monitoring modules, a power supply device, and a determination module. The power supply device includes a plurality of first power lines, a first switch, a first capacitor, a second power line, a plurality of second switches, and a plurality of second capacitors. The determination module is configured to determine a state of power supply from the power supply device to the monitoring modules. Each of the first power lines includes a first positive electrode line and a first negative electrode line, and is connected to the monitoring modules so as to supply power to the monitoring modules. The second power line includes a second positive electrode line and a second negative electrode line, and is configured to receive a predetermined amount of power.