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.