Automotive battery management system (BMS) - high-voltage

Accurately monitors, protects and optimizes electric vehicle (EV) battery performance, revolutionizing your driving experience and energy efficiency

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Block diagram

About

Monitor, protect, and optimize high-voltage (HV) EV batteries
  • Cell monitoring & balancing: Diagnose cell voltages and temperatures, balance cell characteristics, and communicate with the main controller using low-power housekeeping.
  • Current sensing & coulomb counting: Measure SoC accurately and trigger battery disconnection with fast OCD using coulomb counting.
  • Battery controlling: Calculate SoC, SoH, SoP, and SoS, communicate with the domain controller, and perform housekeeping and firmware updates.
  • Battery passport & event logging: Log vital parameters, track malfunctions, support warranties clarification, and enable 'pay-per-use' models. Enhance battery performance and proactively condition it.
  • Battery pack monitoring: Detect thermal runaway, monitor battery disconnection, isolation, and overcurrent. Trigger disconnection units when necessary.
  • Battery disconnection & protection: Ensure EV safety during parking, charging, and discharging. Disconnect from charger and monitor disconnection state when triggered by failures or vehicle being off.
  • Isolated communication: Transmit cell information reliably between high-voltage and low-voltage domains using wired (iso UART) and wireless (low-power Bluetooth®) topologies.
Enable faster time-to-market with complete HV BMS chipset

Infineon offers a complete and scalable automotive HV BMS chipset, production-ready complex device drivers with integrated safety libraries and supports up to ASIL-D safety standards. The Interoperability and flexibility help you to reduce design effort and speed up time-to-market for high-voltage battery management systems.

Applications:

  • Energy storage systems
  • Battery electric vehicles (BEV)
  • Plug-in hybrid electric vehicles (PHEV)
  • Full-hybrid electric vehicles (FHEV)
  • Electric commercial vehicles (e.g. trucks, agricultural vehicles, construction machines)
Enhancing high-voltage BMS robustness and reliability

Infineon's highly integrated products significantly decrease the footprint and help customers reduce costs by minimizing PCB size. Besides, Infineon's Zero-Defect Mindset is reflected in the lowest PPM rates in the market, and significantly reduces vehicle downtime and returns.

Monitor, protect, and optimize high-voltage (HV) EV batteries
  • Cell monitoring & balancing: Diagnose cell voltages and temperatures, balance cell characteristics, and communicate with the main controller using low-power housekeeping.
  • Current sensing & coulomb counting: Measure SoC accurately and trigger battery disconnection with fast OCD using coulomb counting.
  • Battery controlling: Calculate SoC, SoH, SoP, and SoS, communicate with the domain controller, and perform housekeeping and firmware updates.
  • Battery passport & event logging: Log vital parameters, track malfunctions, support warranties clarification, and enable 'pay-per-use' models. Enhance battery performance and proactively condition it.
  • Battery pack monitoring: Detect thermal runaway, monitor battery disconnection, isolation, and overcurrent. Trigger disconnection units when necessary.
  • Battery disconnection & protection: Ensure EV safety during parking, charging, and discharging. Disconnect from charger and monitor disconnection state when triggered by failures or vehicle being off.
  • Isolated communication: Transmit cell information reliably between high-voltage and low-voltage domains using wired (iso UART) and wireless (low-power Bluetooth®) topologies.

Enable faster time-to-market with complete HV BMS chipset

Infineon offers a complete and scalable automotive HV BMS chipset, production-ready complex device drivers with integrated safety libraries and supports up to ASIL-D safety standards. The Interoperability and flexibility help you to reduce design effort and speed up time-to-market for high-voltage battery management systems.

Applications:

  • Energy storage systems
  • Battery electric vehicles (BEV)
  • Plug-in hybrid electric vehicles (PHEV)
  • Full-hybrid electric vehicles (FHEV)
  • Electric commercial vehicles (e.g. trucks, agricultural vehicles, construction machines)

Enhancing high-voltage BMS robustness and reliability

Infineon's highly integrated products significantly decrease the footprint and help customers reduce costs by minimizing PCB size. Besides, Infineon's Zero-Defect Mindset is reflected in the lowest PPM rates in the market, and significantly reduces vehicle downtime and returns.

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Design resources

Partner solutions

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