GALION - Gas sensors for Li-ion battery systems

Project: Research project

Description

Reliable batterypacks are a key component of electrified vehicles, for home storage of solar energy and to maintain quality of power in the electric grid. The global competition forces the battery producer to increase the energy density and to reduce the costs of their products and to keep an acceptable safety level at the same time.
It is a very challenging to detect and anticipate any failure in such systems so that power can be reduced, and a service request can be sent, before catastrophic damage can occure.
Li-Ion battery packs can have failures which are hard to detect with classical monitoring equipment. Such failures are localized hot-spots, emission of electrolyte vapor from damaged Li-Ion cells into the pack housing, condensation of humidity, corrosion and unwanted electrolysis.
The aim of this project is to develop and test a new complementary battery-monitoring technology based on low-cost gas sensors and functional polymers
• Selection of sensors for the sensorboard
• Development of a functional polymer which releases easily detectable tracergas at over-temperature
• Testing detection of failures in a controlled environment
• Testing detection of failures in realistic environment inside a battery housing
• Measuring the gas concentrations inside battery packs during normal operation
The main results of the project will be
• Validation of low-cost gas sensors for battery applications with usage > 10 years
• Characteriszed functional polymer for insulation of electric components with the necessary properties (service life, mechanical and electrical properties)
• Development of an updated safety concept icluding functional safety
• Battery pack demonstrator with the developed technologies
StatusActive
Effective start/end date1/03/1928/02/22