Designing a lithium-ion battery abuse test bench with focus on materials, coating, and manufacturing
2020 (English)Independent thesis Advanced level (degree of Master (One Year)), 10 credits / 15 HE credits
Student thesis
Abstract [en]
Battery abuse tests are necessary to ensure the safety of any product they are used in. To conduct scientific research of battery cell behavior in thermal runaway and propagation events, a unique test bench is necessary. This thesis assesses the material of a battery test bench in the development stage for damage throughout its lifetime. It focuses on the surface of the reactor, which must withstand the substances which are emitted during the thermal runaway abuse tests by battery cells. A detailed analysis of the emitted substances for the five main battery cell chemistries on the market and the resulting environment inside the reactor is conducted. The base material of the reactor, stainless steel 316L, is evaluated regarding chemical resistance in this environment. Mainly corrosion threats pose a risk and are assessed in different scenarios with varying temperature, chemical composition, and time of exposure. The base material design is not able to withstand the calculated worst case over the lifetime of the test bench. Therefore, several countermeasures are presented that can protect the reactor from corrosion. Furthermore, recommendations regarding use, handling and maintenance of the reactor surface are given to provide guidelines for the development.
Place, publisher, year, edition, pages
2020.
Keywords [en]
Battery test bench, Thermal runaway, Surface engineering, 316L, Vent gas study, Corrosion protection, Propagation
National Category
Production Engineering, Human Work Science and Ergonomics
Identifiers
URN: urn:nbn:se:hh:diva-42188OAI: oai:DiVA.org:hh-42188DiVA, id: diva2:1435643
External cooperation
Fraunhofer ISE
Educational program
Master's Programme in Mechanical Engineering, 60 credits
Supervisors
Examiners
2020-06-052020-06-052020-06-05Bibliographically approved