Patent ID: 8339100
Filing Date: 2012-12-25
Classification: H01M,H02J,Y02E,Y02T

Abstract:
1. A circuit for energy efficient and increased energy storage balancing of a plurality of battery cells of a rechargeable multi-cell battery pack, said circuit comprising: a first switch array, wherein said battery cells are grouped into a first group of battery modules based upon configurations of said first switch array; a second switch array, wherein said battery cells are grouped into a second group of battery modules based upon configurations of said second switch array, wherein each of said cells has a cell parameter, and wherein an average cell parameter for each battery module in said first and second groups is obtained by averaging a plurality of cell parameters of battery cells in said each battery module; and a converter coupled between said first and second switch arrays, wherein said first switch array is configured to select a donator module from said first group of battery modules according to said average cell parameter and deliver energy from said donator module to said converter, and wherein said second switch array is configured to select a receiver module from said second group of battery modules according to said average cell parameter and deliver said energy from said converter to said receiver module.