Battery knowledge · Data, communication and electronics
BMS cybersecurity
Protecting a battery’s controllers and data from manipulation through authenticated messages, signed firmware, secure boot and locked diagnostic access; a spoofed limit could overcharge cells. UN R155 has required a certified cybersecurity management system for new EU vehicle types since July 2022, with ISO/SAE 21434 as the engineering standard.
- Also called
- battery cybersecurity, UN R155, ISO/SAE 21434
Example
Data, communication and electronics: an example situation
2500 in a log might mean 25.00 °C, 2.5 V or raw counts. Units and scale must accompany the value.
Read BMS cybersecurity alongside CAN bus in this context. The serial network over which a BMS talks to the vehicle or inverter: a two-wire differential bus, defined in ISO 11898, carrying short prioritised messages at up to 1 Mbit/s, or faster with CAN FD. Every node hears every message, and a dominant bit wins arbitration without any collision.
Use in Lemonergy
Separate quantities from encoding and transport.
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.
- 3rd generation of the CAN data link layer
CAN in Automation, CAN Newsletter · 2020
Topic background · Classical CAN, CAN FD and CAN XL data-link concepts; publication describes the 2020 state.
- Getting Started with the BQ76925
Texas Instruments · 2019
Topic background · A concrete BMS analog front-end example: cell voltage, current, temperature measurement and MCU integration.