Case study – TÜV Süd

January 2017 Case study – TÜV Süd

Aging and performance test for cells and modules for lithium batteries

Lithium-ion batteries play a central role in the efficient storage of electrical energy. Due to their high energy density at a relatively low weight, they have long been the battery of choice for stationary storage of renewable energies, but also in the area of automotive applications or electromobility. Due to their high storage capacity, they are used in ever increasing areas. But their high energy and power density means new potential hazards when operated outside their specifications. In addition, it is important to achieve the longest possible service life at consistently high capacity.

 

Extensive performance tests are carried out in order to determine the performance of the cells and modules (safety package P). The components are therefore brought to the limits of their performance and load capacities by exposing them to constantly changing temperatures, with and without a current. The test object is exposed, for example, to temperatures of -10 °C to 55 °C in the cooling incubator under continuous temperature changes. Test scenarios are also carried out in the environmental simulation chamber in climatic ranges of -30 °C to 60 °C at up to 96% RH.

 

The most compelling feature for us is the ability to customize the units. We have been able to tailor the climate chambers to our specific needs.

Johannes Rößner, TÜV SÜD Battery Testing