BATTERY MANAGING DEVICE FOR ELECTRIC VEHICLE

摘要

PROBLEM TO BE SOLVED: To provide a battery managing device for an electric vehicle for reducing the number of wire harnesses, without using multipolar connectors. SOLUTION: A plurality of voltage sensors 13c, individually corresponding to a plurality of batteries 11 arranged in series, are arranged for detecting terminal voltages of the batteries 11. A TVH detection unit 14 is connected to the plurality of voltage sensors 13c and multiplex transmission lines 16a, 16b, and a battery ECU 15 is connected to the multiplex transmission lines 16a, 16b for demanding data from the TVH detection unit 14. The TVH detection unit 14 multiplexes the terminal voltages of the respective batteries 11 which are detected by the plurality of voltage sensors 13c in compliance with the data demand from the battery ECU 15, so as to feed it to the multiplex transmission line, while the battery ECU 15 controls charging/discharging of the respective batteries on the basis of the terminal voltages of the respective batteries 11 from the TVH detection unit 14.