BATTERY MONITORING DEVICE

• Main Author: MATSUMOTO, Ryo
• Format: Patent
• Language: English
• Published: 03.10.2024
• Subjects: MEASURING; MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES; PHYSICS; TESTING

Disconnection detection for a plurality of connection lines respectively connected to a plurality of battery cells is performed in a short time. A battery monitoring device has a function of detecting disconnection for each of a plurality of connection lines respectively connected to the battery cells of a battery pack in which the plurality of battery cells is connected in series. The battery monitoring device includes a plurality of internal wirings respectively connected to the plurality of connection lines, a plurality of transistors provided corresponding to the plurality of internal wirings and turned on according to a potential difference between a corresponding internal wiring and an internal wiring adjacent to the corresponding internal wiring, and a determination circuit that performs a determination process of determining the presence or absence of disconnection of each of the plurality of connection lines based on output voltages of the plurality of transistors.