Patent ID: 9252619
Filing Date: 2016-02-02
CPC Classification: B60L,H02J,Y02T

Claim Text:
1. A method for resistive charge equalization of battery cells of a battery, comprising: measuring a state of charge of the battery cells; identifying the battery cells in which the state of charge exceeds a first predefined state of charge value and which are associated with a first mask, the first mask representing a spatial arrangement of a first predefined portion of all the battery cells that undergo charge equalization together; performing a first resistive charge equalization for the battery cells in which the state of charge exceeds the first predefined state of charge value and which are associated with the first mask by discharging through corresponding balancing resistors; identifying the battery cells in which the state of charge exceeds a second predefined state of charge value and which are associated with a second mask, the second mask representing a spatial arrangement of a second predefined portion of all the battery cells that undergo charge equalization together, the second mask differing from the first mask; and performing a second resistive charge equalization for the battery cells in which the state of charge exceeds the second predefined state of charge value and which are associated with the second mask by discharging through corresponding balancing resistors.