Battery system for vehicle, on-vehicle battery module, and cell controller

摘要

A battery system for vehicle comprises a battery unit 9 that is constituted with a plurality of serially connected cell groups each include a plurality of serially connected battery cells BC 1-4, integrated circuits that are each disposed in correspondence to one of the cell groups of the battery unit 9 and each measure terminal voltages at the battery cells BC 1-4 in the corresponding cell group, and a signal transmission path through which one of the integrated circuits is connected to another one of the integrated circuits or to a circuit other than that of the integrated circuits.