General information
Organisation
The French Alternative Energies and Atomic Energy Commission (CEA) is a key player in research, development and innovation in four main areas :
• defence and security,
• nuclear energy (fission and fusion),
• technological research for industry,
• fundamental research in the physical sciences and life sciences.
Drawing on its widely acknowledged expertise, and thanks to its 16000 technicians, engineers, researchers and staff, the CEA actively participates in collaborative projects with a large number of academic and industrial partners.
The CEA is established in ten centers spread throughout France
Reference
SL-DES-24-0742
Thesis topic details
Category
Technological challenges
Thesis topics
Enhancing micro-mobility battery pack lifetime by using proper and cost effective thermal management
Contract
Thèse
Job description
Urban mobility options are diversifying, notably with the deployment of micro-mobility vehicles (electric bikes, cargo bikes, scooters, electric carts). Their usage poses increasing challenges for powertrains, especially for batteries. Li-Ion batteries are temperature-sensitive and require effective thermal regulation to maximize their lifespan. This constraint is well-considered in the automotive sector, which often employs onboard cooling systems to cool or warm batteries.
Micro-mobility vehicles often incorporate battery packs with a simple and cost-effective design, featuring minimal components and lacking a thermal management system. If these batteries are used in severe weather conditions or under high electrical loads, their lifespan can be significantly affected, directly impacting their overall environmental footprint. The development of new thermal management solutions tailored to usage patterns and industrial viability will be the central theme of this thesis.
We aim to achieve the following objectives:
- Investigation of typical usage profiles for these mobility devices (current profiles, external thermal constraints, charging and discharging conditions, integration constraints within the vehicle).
- Design and development of innovative thermal management systems.
- Prototyping and characterization of one or more solutions.
- Integration of thermal results into an aging model to analyze the effects on lifespan.
This thesis proposes an approach combining design, simulation/modeling, and prototyping/characterization. The laboratory is equipped with a dedicated platform for battery pack assembly, featuring rapid prototyping tools (3D printing, laser cutting and welding, mechanical workshop), as well as a testing platform enabling advanced characterizations of battery systems.
University / doctoral school
Ingénierie - Matériaux - Environnement - Energétique - Procédés - Production (IMEP2)
Université Grenoble Alpes
Thesis topic location
Site
Grenoble
Requester
Position start date
01/10/2024
Person to be contacted by the applicant
WEICK Clément clement.weick@cea.fr
CEA
DRT/DEHT//L2PS
CEA Grenoble
17 Av des martyrs, 38000 Grenoble, France
04 38 78 68 30
Tutor / Responsible thesis director
MOREL Christophe christophe.morel@cea.fr
CEA
DRT/DEHT//LAEH
CEA/Grenoble
04 38 78 92 27
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