Innovate UK has launched a series of Integrated Development Programmes for transport technologies. Part of the IDP9 Technology Challenge initiative was focused on game changing energy storage technology. Ricardo is member of a project team, consisting of Oxis Energy, Imperial College London and Cranfield University, to provide a battery management system, battery integration skills, and battery testing facilities. The goal is to develop a new cell chemistry with higher specific energy compared to current lithium ion technology, paired with better battery management and control to use more of the available cell capacity.
The project will expand Innovate UK’s objective of 400Wh/kg and $250/kWh to include other dimensions of this multi-objective problem (power density/life etc.). The proposed technology will estimate, in real time, a more accurate battery state to improve usable capacity and operational safety. Additionally, the technology should provide increased utilisation of untapped lithium-sulfur (Li-S) battery capacity at the cell level through advanced sensing and detailed understanding at cell level. Ricardo will look at developing battery control and optimisation systems, with hardware that uses mathematical models to heighten battery performance. If successful, the advanced sensing, diagnostic and control technologies developed will allow us to unlock untapped potential in the performance, safety and lifetime of commercial batteries.
The battery management system that Ricardo develops will offer an increased operating envelope of battery energy storage. Using a highly accurate model-based control to optimally manage cells within a battery pack will permit:
- Increased pack working life
- Reduced pack size
- More efficient packs
- Better prediction of pack life