Patent ID: 8773068
Filing Date: 2014-07-08
Classification: H01M,H02J,Y02E

Abstract:
1. A rechargeable battery system comprising: a plurality of rechargeable battery modules coupled between a plurality of terminals, wherein the rechargeable battery modules individually comprise a plurality of rechargeable battery cells; and charge balancing circuitry configured to implement, for individual ones of the rechargeable battery modules, first charge balancing operations with respect to the rechargeable battery cells of individual ones of the rechargeable battery modules, and to implement second charge balancing operations with respect to the rechargeable battery modules, wherein the charge balancing circuitry is configured to implement, for individual ones of the rechargeable battery modules, the first charge balancing operations to increase balancing of states of charge of the rechargeable battery cells of the respective individual ones of the rechargeable battery modules compared with the states of charge of the rechargeable battery cells of the respective individual ones of the rechargeable battery modules in an absence of the first charge balancing operations, and to implement the second charge balancing operations to increase the balancing of states of charge of the rechargeable battery modules with respect to one another compared with the states of charge of the rechargeable battery modules in an absence of the second charge balancing operations.