INDUSTRY NEWS
TotalEnergies makes history by incorporating an immersion-cooled battery into a road-going vehicle
Car makers and battery manufacturers have been greatly impressed by the performance of new TotalEnergies-developed technology, but a number of question marks mean there are no plans to mass-market it, in the short-term at least.
Changing the battery cooling technology in an electric vehicle represents a considerable step. This paradigm shift in technology not only has an impact on design, development guidelines, energy strategy and cooling control, but it also affects safety. Test projects are already underway, but this technology has to-date only been trialled in prototypes. However, TotalEnergies engineers have managed to implement an exception.
In order to support the development of this technology, TotalEnergies decided to apply it for the first time in a road-going car, replacing the battery cooling system in a Volvo XC90 plug-in hybrid with an immersion alternative. In performance terms, the result was immediate: faster charging, better cooling, enhanced safety, and lower cost and mass, without in any way needing to modify the design of either the battery or the vehicle.
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This allowed a direct comparison between the advantages offered by immersion cooling and by more conventional cooling methods, supported by data collected for the first time from a mass-produced vehicle rather than relying solely on simulations. The cooling system was replaced with minimal mechanical modifications. The architecture of the vehicle was respected, and the battery remains the same. The only differences to be found were in the components needed for immersion cooling, or where it was necessary to make them compatible with the dielectric fluid. The potential of the on-board charger, by contrast, increased from 3.7kW to 22kW.
This transformation enabled TotalEnergies to demonstrate that immersion cooling meets the new specifications required for high-power applications.
LINK
https://lubricants.totalenergies.com/
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