Daniel, please introduce yourself briefly and explain what you are currently doing in Electronics laboratory .
Daniel: I manage EVOMOTIV the areas of drive systems, energy systems, and electronics validation. We develop and implement test concepts for cells, modules, and complete HV battery systems. Our current focus is on propagation tests to analyze the behavior of a thermal event at the cell level and its propagation throughout the system.
What is the goal of these tests and how do you go about it?
Daniel: The goal is to obtain reproducible data on fault propagation, evaluate the effectiveness of protective measures such as thermal barriers or degassing concepts, and demonstrate compliance with standards and customer specifications.
The process: We define the application, select a suitable excitation method—for example, external heating, nail penetration, or inductive heating—and instrument the cell. The tests are run in a multi-level, secure container with temperature, voltage, and pressure measurements, as well as synchronous video recording.
What type of evaluation is carried out and how do manufacturers use the results?
Daniel: We evaluate temperature rise rates, pressure peaks, propagation duration, and energy dissipation. From this, we derive concrete design recommendations for cell spacing, housing design, cooling strategies, and degassing. Manufacturers use this data to optimize their battery systems and as evidence for standards such as ISO 16750.
Do you offer other HV battery testing besides propagation testing?
Daniel: Yes. This includes capacity and performance characterization in the entire vehicle, endurance and load profile tests, abuse tests, and the validation of BMS functions and subsystems such as cell monitoring ICs – all in compliance with standards and adapted to the specific project.
Note: This interview is also available as a three-part video series on our Social media channelsThere, Daniel demonstrates the test setup, various excitation methods, and the evaluation steps directly on the test bench in the laboratory.
Contact Contact us for project-specific test concepts – from individual cells to complete HV battery systems.
