Patent ID: 8159184
Filing Date: 2012-04-17
Classification: B60L,G01R,H02J,Y02T

Abstract:
1. A power supply system comprising: a battery module that includes a plurality of serially connected battery groups each constituted with a plurality of serially connected battery cells; a plurality of integrated circuits each disposed in correspondence to one of the battery groups; a control circuit; a transmission path through which the integrated circuits are connected to the control circuit; and a relay circuit via which an electrical current is supplied from the battery module, wherein: in response to a start signal instructing an operation start and received via the transmission path, each integrated circuit measures terminal voltages at the battery cells in the corresponding battery group and executes an abnormality diagnosis; and if abnormality diagnosis results provided by the integrated circuits indicate no abnormality, the control circuit closes the relay, enabling supply of electrical current from the battery module and subsequently, the control circuit receives measurement results from the integrated circuits via the transmission path.