Battery (electricity)

Engineering

Materials science

Graphene

Thermal resistance

Power (physics)

Electric vehicle

Mechanical engineering

Thermodynamics

Physics

Thermal management of electronic devices and systems

Nanotechnology

Thermal

Automotive engineering

Heat sink

Optoelectronics

Water cooling

Electrical engineering

In this work, a graphene assembled film integrated heat sink and water cooling technology was used to build an experimental set-up of a thermal management system to demonstrate the possibility to achieve efficient cooling of the propulsion battery in electric vehicles. The experimental results showed that the temperature decrease of a Li-ion battery module can reach 11°C and 9 °C under discharge rates as of 2C and 1C, respectively. The calculated thermal resistance of the graphene based cooling system is about 76% of a similar copper based cooling system. Surface modification was carried out on the graphene sheet to achieve a reliable bonding between the graphene sheet and the battery cell surface. This work provides a proof of concept of a new highly efficient approach for electric vehicle battery thermal management using the light-weight material graphene.

Graphene based thermal management system for battery cooling in electric vehicles