Battery knowledge · Testing methods
Sample phases
The automotive maturity stages of a cell or pack. A-samples are hand-built functional prototypes; B-samples have a near-final design built on prototype tooling; C-samples use series tooling and materials to validate the design; D-samples come off the series line at rate for production approval. Later design or process changes usually require requalification.
- Also called
- A-sample, B-sample, C-sample, D-sample, sample maturity, A to D samples
Example
Testing methods: an example situation
Resistance immediately after a current step can differ from a ten-second value because slower polarization contributes.
Read Sample phases alongside Cell design in this context. Choosing the chemistry, electrode loadings, porosities, N/P ratio, separator, electrolyte volume and format that together meet an energy, power, life, safety and cost target. Each choice trades against the others: thicker electrodes raise energy and lower power.
Use in Lemonergy
Record specimen, state, instrument, temperature and timing.
This is a reference concept. No executable Lemonergy block has been verified for this term.
References & further reading
Further reading on this topic
These sources provide broader context; they are not presented as citations for every statement in this entry.
- Battery Test Manual For Electric Vehicles, Revision 3
Jon P. Christopherson · Idaho National Laboratory · 2015
Topic background · Performance characterization, pulse resistance/power, life testing and reference performance tests; historical 2015 edition.