Battery knowledge · High-voltage and functional safety
Functional safety
The discipline, standardised for vehicles in ISO 26262, of making sure electronic failures do not cause harm. Battery functions such as overvoltage protection are classified by risk into ASIL levels A to D, which set how redundant and verified their hardware and software must be. [1]
- Abbreviation
- ISO 26262
- Also called
- ASIL
Example
High-voltage and functional safety: an example situation
Normal-operation current limits do not demonstrate correct contactor behavior under a welded-contact or sensor fault.
Read Functional safety alongside Battery management system in this context. The electronics and software that keep a battery inside its safe window: measuring every cell voltage and many temperatures, estimating SOC and SOH, balancing cells, computing current limits, controlling the contactors and reporting over the vehicle network.
Use in Lemonergy
Relate protection to faults, detection and response.
This is a reference concept. No executable Lemonergy block has been verified for this term.
References & further reading
Technical references
- ISO 26262-1:2018 — Road vehicles — Functional safety — Part 1: Vocabulary
International Organization for Standardization · 2018
Technical reference · Scope and terminology of automotive electrical/electronic functional safety. The catalogue is not the full standard.