// Smart-LIB: Smart lithium-ion batteries in manufacture and application

Mobile storage of electrical energy using high-performance batteries is one of the key technologies for energy supply in the 21st century. High performance and energy density, good cycle stability and durability make lithium-ion batteries strong candidates for use in hybrid and electric vehicles.

However, large-scale lithium-ion cells are extremely susceptible to faults as a result of even the smallest of errors during the production process. Although the exact process parameters are documented during production, a number of faults can only be detected when the battery is actually being used. Monitoring the internal life of the battery during formation and use is currently not possible – or only to a limited extent – but would be a great advantage.

In the Smart-LIB project funded by the Baden-Württemberg Ministry of Economics, lithium-ion cells in the PHEV1 format were equipped with internal sensors (T, V) for the first time and then subjected to a stress test. The collected sensor data was wirelessly transferred to an external receiver via an infrared transmitter, thus monitoring the state-of-health of the cell (SOH) in real time. This opens up new possibilities to detect critical battery conditions at an early stage and avoid failure in the field.

Contact

M.Sc. Stefan Rößler
+49 (0)731 95 30-349
Monitoring the anode and cathode potential of a 22-Ah PHEV1 cell fitted with an IR transmitter and an internal sensor system.
Monitoring the anode and cathode potential of a 22-Ah PHEV1 cell fitted with an IR transmitter and an internal sensor system.