Patent ID: 7400113
Filing Date: 2008-07-15
Classification: H02J,Y02T

Abstract:
1. A battery management unit to manage the state of charge of a plurality of cells or batteries connected thereto including: a state of charge sensor to measure the state of charge of the cells or batteries; a multiplexer to selectively connect the state of charge sensor to each of the cells or batteries to be measured; a charger to charge at least one of the cells or batteries; a discharger to discharge at least one of the cells or batteries; a controller to selectively connect the state of charge sensor to the cell or battery to be measured via the multiplexer, to receive state of charge information from the state of charge sensor and to selectively connect the charger or the discharger to one or more of the cells or batteries via the multiplexer to dynamically maintain the state of charge of the cells or batteries within a predetermined range.