Lube-Tech
improvement in terms of electric mobility safety. TotalEnergies used its physical chemistry expertise during this innovation’s development to contribute to making electric mobility safer.
Conclusions and outlook
The path taken by mobility in favour of electricity has had a big impact on lubricants and their development. The different fluids for electric vehicles presented in this paper show the considerable role that thermal management is playing in the work of TotalEnergies.
Furthermore, in response to the shorter development times, new skills have been acquired, leading to the development of in-house testing procedures and in order to respond swiftly and flexibly to the potential problematics faced by automobile manufacturers. This experimental development combines with the development of digital simulation to enable results to be applied easily to different powertrain architectures and facilitate dialogue.
Last but not least, it has been demonstrated that a new fluid can permit the emergence of a new technology, and also that direct cooling enables faster battery-charging while at the same time improving safety. Special attention has been paid, as well, to the products’ environmental impact, something that is going to become an industry norm in the years ahead.
The lubricant industry has long assisted its customers during such shifts and the boom enjoyed by electric mobility is a perfect illustration of this. The understanding of fluids is an asset for the emergence of new technologies and TotalEnergies is more than ever committed to working alongside automobile manufacturers in the drive towards electric mobility.
Further reading
[1] E. Jisheng: Fuel Economy and Lubricants in Powertrain Systems” (LUBE MAGAZINE / Issue 134 / August 2016).
32 LUBE MAGAZINE NO.168 APRIL 2022
PUBLISHED BY LUBE: THE EUROPEAN LUBRICANTS INDUSTRY MAGAZINE
No.139 page 7
[2] CTI Magazine: Electric Mobility & Innovation: TotalEnergies Launches a Pioneering Line of Fluids for Electric and Hybrid Vehicles (July 2019). [3] Wu, Guang, Xing Zhang and Zuomin Dong: Powertrain Architectures of Electrified Vehicles: Review, Classification and Comparison (Journal of the Franklin Institute 352.2 / 2015 / 425-448). [4] Jahns, M. Thomas and Hang Dai: The Past, Present and Future of Power Electronics Integration Technology in Motor Drives (CPSS Transactions on Power Electronics and Applications 2.3 / 2017 / 197-216).
[5] H. El Bahi: Comprehensive Study of the Lubrication of Electric Drive Units (2021 SAE Fuels & Lubes Conference).
[6] Gundabattini, Edison et al: Thermal Mapping of a High-Speed Electric Motor Used For Traction Applications and Analysis of Various Cooling Methods – A Review (Energies 14.5 / 2021/ 1472). [7] Park, Myeong Hyeon, and Sung Chul Kim: Thermal Characteristics and Effects of Oil Spray Cooling on In-Wheel Motors in Electric Vehicles (Applied Thermal Engineering 152 /2019/ 582-593). [8] Carriero, Alberto et al: A Review of the State of the Art of Electric Traction Motors Cooling Techniques (2018). [9] Pires, Igor Amariz et al: An Assessment of Immersion Cooling for Power Electronics: An Oil Volume Case Study (IEEE Transactions on Industry Applications 56.3 / 2020/ 3231-3237). [10] Kampker, Achim, Dirk Vallée and Armin Schnettler: Elektromobilität (Springer Berlin Heidelberg / 2013). [11] Champagne, Nicolas: Improving Battery Pack Safety with an Innovative Fluid for Thermal Management (#2021-01-1250 / SAE Technical Paper / 2021).
[12] Jonathan Raisin and Nicolas Champagne: Innovative Fluid Allowing a New and Efficient Battery Thermal Management (SAE Technical Paper / 2019). [13] Feng, Xuning et al: Thermal Runaway Mechanism of Lithium-Ion Battery for Electric Vehicles: A review (Energy Storage Materials 10 / 2018 / 246-267).
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