Automotive ASIL-D-Batteriemanagementsystem (BMS) Architektur
BatteryMgmt spezifiziert serienreife BMS-Architekturen: Dual-Core-Lockstep-Mikrocontroller zur Zellspannungsmessung mit 1 mV Präzision, ultraschnelle Pyro-Sicherungen zur Trennung von 1.000A-Kurzschlüssen in unter 2 ms und physikbasierte neuronale Netze zur SoC- und SoP-Schätzung.
Primary BMS Master Zonal Architecture
Central Controller: Primary BMS Master — Dual-Core Lockstep Controller
Zonal Control Units & TSN Ring
- Analog Front-End (AFE) 1 mV Sensing
- Pyro-Fuse Ultra-Fast Driver
- High-Voltage Contactor Matrix
- Dual Extended Kalman Filter SoC Engine
- Isolated UART / Iso-SPI Daisy Chain
Null-Toleranz-Funktionale Sicherheit für 800V-Traktionsbatterien
Ein einziges Überspannungsereignis oder unentdeckte Dendriten können ein katastrophales thermisches Durchgehen auslösen. BatteryMgmt implementiert zweifach redundante Messpfade, Hardware-Komparator-Überspannungsfallen und redundante Schütz-Economizer für ASIL D.
Core Engineering Areas
- Dual Extended Kalman Filter SoC — Coupling two concurrent Extended Kalman Filters—one estimating state of charge, the second tracking internal cell ohmic and polarization resistance in real time.
- High-Voltage Contactor Sequencing — Managing pre-charge resistors, main positive/negative contactors, and rapid discharge circuits to prevent welding and arcing during inrush events.
- Pyro-Fuse Short-Circuit Isolation — Deploying micro-gas generator pyrotechnic safety switches to physically sever high-voltage busbars before thermal runaway or battery rupture can propagate.
Technical Articles
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