Patent ID: 9000732
Filing Date: 2015-04-07
Classification: G01R,H02J

Abstract:
1. An apparatus for managing a battery pack having secondary cells, the apparatus comprising: a voltage sensing unit configured to measure voltage values of the secondary cells; a first monitoring unit configured to store a plurality of first voltage values each corresponding to one of the secondary cells measured when all the voltage values of the secondary cells are greater than or equal to a minimum reference voltage value in a charging cycle; a second monitoring unit configured to store a plurality of second voltage values each corresponding to one of the secondary cells when the voltage value of one cell among the secondary cells is greater than or equal to a maximum reference voltage value in the charging cycle; and a controlling unit configured to calculate a plurality of voltage disparate values, each value being a difference between the first voltage value and the second voltage value for each cell, determine a secondary cell having a maximum voltage disparate value among the plurality of voltage disparate values as a degraded cell in the charging cycle and manage the battery pack based on the degraded cell.