Patent ID: 9406981
Filing Date: 2016-08-02
CPC Classification: H01M,Y02E

Claim Text:
1. A battery system, comprising: a battery rack configured to provide power to an input/output terminal of the battery system and to store power from the input/output terminal of the battery system, the battery system including a positive input/output terminal and a negative input/output terminal; a rack protection circuit connected to the battery rack, wherein the rack protection circuit is configured to selectively connect and disconnect the battery rack to and from the positive and negative input/output terminals of the battery system, wherein connecting and disconnecting the battery rack from the positive input/output terminal of the battery system is unrelated to connecting and disconnecting the battery rack from the negative input/output terminal of the battery system; and a rack battery management system (BMS) connected directly to the battery rack and configured to communicate with the battery rack over a single communication path and with the rack protection circuit, wherein the rack BMS is configured to receive data from the battery rack and to generate control signals for the rack protection circuit and for the battery rack, wherein the rack protection circuit comprises a current path between the battery rack and the input/output terminals of the battery system, and wherein the rack BMS is excluded from the current path.