Project develops electric car battery with increased power

The battery uses Nickel Cobalt Manganese (NCM) electrochemistry, which theoretically requires 50 per cent less volume and 30 per cent less mass when compared to Lithium Iron Phosphate (LIP) chemistry at cell level.

‘NCM batteries have a higher energy density which means they can produce more power than LIP batteries of the same size,’ Allan Paterson, a senior electrochemist at Axeon told The Engineer.

A key goal of the project was to confirm that cell level benefits pass through to the battery pack level when taking into account the overall packaging, cell retention, cooling and interconnects, Battery Management System components and overall system functionality.

The developers claim their tests revealed that the majority of cell level benefits migrated to battery pack level.

A demonstrator of the battery system has now been deployed into an Allied Vehicles test vehicle, with the results of improved range and performance. The new battery incorporates NCM ‘pouch’ cells packaged in modular building blocks. Axeon believes that this modular design will allow them to support rapid prototyping into a range of vehicles with reduced development time.