Patent ID: 8098047

Claim:
A battery apparatus, comprising: a plurality of battery modules connected in series and each including a plurality of battery cells; and a first control device group having a plurality of first control devices corresponding to the plurality of battery modules, respectively, each of the plurality of first control devices receiving a command signal transmitted from a second control device via an isolator and detecting states of the plurality of battery cells contained in a corresponding one of the plurality of battery modules, wherein each of the first control devices is configured by an integrated circuit and the first control devices are connected in series, wherein a plurality of the integrated circuits are connected in series in a manner that a signal output circuit of one integrated circuit and a signal input circuit of other integrated circuit between every adjacent two of the plurality of integrated circuits coupled in series are coupled by a signal transmission path in an electrically non-isolated manner, and wherein a first integrated circuit of the plurality of the integrated circuits connected in series receives a wake-up signal sent from the second control device at the signal input circuit thereof via an isolator, and sends the wake-up signal from the signal output circuit of the first integrated circuit to the signal input circuit of a next integrated circuit of the plurality of the integrated circuits via the signal transmission path when an internal power supply circuit of the first integrated circuit is activated from a sleeping state.