CHEMLIB - Optimization of cell chemistry for automotive lithium-ion batteries

Project: Research project

Description

Lithium-ion cell technology has established itself in automotive applications due to its superior features
as preferred technology for future electrical energy storages. Cells currently present on the market have
certain disadvantages and function restrictions which are hampering the widespread usage in the automotive
industry. These are the still inadequate energy and power density, and function restrictions
caused by the aspects of cycling stability, ageing, safety and temperature range.
At present, the theoretical upper performance limits of electrochemical energy storage systems are not
reached. The approach of the performance parameters towards the theoretical borders can only gradually
be reached by optimization on the cell chemistry level.
The algorithms, characteristic diagrams and parameters for cell supervision in a module or a complete
battery system can be developed only by exact knowledge of the events in the cell, but the cell producers
do not have the necessary knowledge about requirements in the energy storage system from view of
the automotive industry. This is based on the fact, that many manufacturers e.g. work for consumer industry,
where the requirements are fundamentally more uncritical than in the automotive industry. In this
are amongst others the load cycles at discharging as well as charging and the vibration requirements
considerably higher than in other non-automotive applications.
StatusFinished
Effective start/end date1/02/0931/01/11