Liten is a major European research institute and a driving force behind the development of the sustainable energy technologies of the future. The institute is spearheading the EU’s efforts to limit dependency on fossil fuels and reduce greenhouse gas emissions in three key areas: renewable energy, energy efficiency/storage and development of materials.
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Liten's research teams work across a vast portfolio of renewable energy technologies. Cutting-edge photovoltaic technologies are developed at INES, the French National centre for solar research and R&D with Hydrogen and Biomass activities being managed from the LITEN's main site in Grenoble, Rhone-Alpes.
“Radically improving energy efficiency will reduce the need for investment in energy infrastructure, cut fuel costs, increase competitiveness, lessen exposure to fuel price volatility, increase energy affordability for low-income households and cut local and global pollutants improving consumer welfare” Source OECD Energy report, 2014
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News | New technologies
Evacuating the heat that builds up inside lithium-ion batteries during operation is crucial to preventing thermal runaway. To overcome the weaknesses of the plate-based cooling systems used in some electric vehicles (only one side of the plate cools, a thermal gradient is generated, and the cells age prematurely), Liten researchers are investigating a direct diphasic-fluid cooling system.
They built a demonstrator in which all of the cells in the battery pack are immersed in an insulating fluid circulated by a pump. The concept is not new, but the properties of the fluid are. In short, the fluid has a relatively low boiling point (around 65 °C). So, when the temperature exceeds the critical threshold, the fluid is vaporized at the hotspot, promoting substantial absorption of heat and, therefore, local and efficient cooling. The phenomenon is passive, which, in theory, would ensure that heat continues to be extracted, even if the pump stops.
The system is currently being tested against existing systems in the lab for use in electric vehicles.
CEA is a French government-funded technological research organisation in four main areas: low-carbon energies, defense and security, information technologies and health technologies. A prominent player in the European Research Area, it is involved in setting up collaborative projects with many partners around the world.