Battery

Cell chemistry

» chemical analysis of electrolytes and electrodes

» element distribution mappings with SEM + EDX

» x-ray diffraction (XRD) for phase analysis

» characterisation of layers and structures

Qualification of production processes and production quality

 » non-destructive structural representation by computed tomography

 » safe disassembly for further examination after discharging

 » inspection of  electrode installation and contacting in materialographic images

 » metallographic examination of pack- or module frames (e.g. welding or soldering joints) and more

 » testing on mechanical safety devices (e.g. pressure relief valves)

Reliability and transport safety

Validation of protection with:

» electrical abuse tests (overcharge, overdischarge und short circuits)

» mechanical abuse tests (shock/vibration, crushing, drop test, penetration)

» thermal and climatic tests (altitude simulation, thermal cycling/shocks)

» provoked  thermal runaways

 

 

Electrical tests

» capacity and lifetime/cycle stability

» cower / power density

» electrical resistance (surface, contacting, …)