Send battery data over existing connections

August 22, 2013 // By Christoph Hammerschmidt
A consortium of two commercial companies and two universities working in the field of intelligent battery management technologies is developing a data exchange technology which does not require additional data wires within large lithium-ion battery packs - the battery data are transmitted simply across the current paths.

In order to enable more efficient management technologies for the more than 100 cells within a battery pack, the scientists involved in the project IntLion have developed a technique that resembles established Powerline Transmission, but applies these principles to DC current paths. This would enable battery manufacturers to do away with additional data wires within the battery packs and thus save space and costs. The system makes every single battery cell accessible to the management system, enabling a more precise and efficient battery management. In addition, this approach allows improved utilsation of the energy potential of such a battery pack: If one cell fails to work properly, it can be replaced instead of replacing a group of cells or even the entire battery pack.

In the IntLion project, Robert Bosch GmbH and ProDesign Electronic GmbH collaborate with the Karlsruhe Institute of Technology (KIT) and the Hochschule Hannover. The project is funded within the scope of the electromobility research program by the German federal research ministry.