Active Balancing Method in Lithium Ion Battery Stacks

TP-AAB-US_2010_P_06

05/21/2010

Authors Abstract
Content
Infineon has introduced a method for active cell balancing of lithium ion battery stacks. Balancing the charge of cells in a multi-cell lithium ion battery stack is often employed to guard against damage and improve the lifetime of the battery. Battery stacks which are in production today largely use a passive cell balancing method, which dissipates charge through a resistor as heat. This has the undesirable effect of increasing the cost of cooling methods and wasting usable energy. The method presented by Infineon uses a flyback converter to pass charge from cell to cell with low losses. This method effectively increases the lifetime of the battery and can increase the amount of usable energy stored in the battery stack.
Details
Citation
Bonfiglio, C., "Active Balancing Method in Lithium Ion Battery Stacks," SAE Technical Paper TP-AAB-US_2010_P_06, 2010, .
Additional Details
Publisher
Published
May 21, 2010
Product Code
TP-AAB-US_2010_P_06
Content Type
Technical Paper
Language
English