Patent ID: 7091695
Filing Date: 2006-08-15
Classification: B60L,G01R,H01M,H02J,Y02E,Y02T

Abstract:
1. A battery apparatus, comprising: a battery unit which includes plural battery modules connected in series each having plural battery cells connected in series; and a control unit which controls the battery unit, wherein the control unit includes: plural low order control devices which are provided in correspondence with the plural battery modules, respectively, each of the plural low order control devices controlling the plural battery cells corresponding to one of the plural battery modules; and a high order control device which controls the plural low order control devices, wherein the plural low order control devices are electrically connected in series, each of the plural low order control devices being supplied with electric power from the corresponding one of the plural battery modules, and wherein the high order control device is supplied with electric power from a power supply different from the plural battery modules, the high order control device being connected electrically in series through an isolation unit with the plural low order control devices electrically connected in series.