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NTBatteryManagementSystem

Safety reference design targeting ISO 26262 ASIL C


NewTec NTBatteryManagementSystem (NTBMS) is an e-mobility reference design and complete safety support package for Battery Management Systems. It is constructed with a two board approach: a functional safety System-onModule board and a Battery Management System (BMS) application board. The NTBMS is a generic safety reference design developed in cooperation with NXP.

Customer benefits

  • Accelerate time to market
  • Reduction in costs for development and certification
  • Safety Development Plattform  for BMS
  • Reference Design targeting ISO 26262 ASIL C

Typical applications

  • Automotive applications for starter and auxiliary Lithium-Ion batteries
    • eCars
    • eBike
    • eScooter, etc.
  • Smart Grid energy management
  • Infrastructure / Decentralized Energy
    • Battery charging stations
    • Overcharge protection
    • Distributed Power Management / Smart Grids
  • Industrial applications
  • Medical applications
    • Emergency failover systems
    • Portable medical devices
  • Construction / Agriculture
    • Portable power tools
    • Hybrid construction vehicles

 

System overview

The NTBMS is designed for systems with high demand on reliability and safety targeting ISO 26262 ASIL C.  
The Battery Management System of Li-Ion battery includes cell monitoring, current sensing, passive cell balancing, battery breaker control, computation unit for Battery parameter extraction and communication to other ECU through LIN or CAN.
Battery management systems are responsible to monitor and control low- and high-voltage batteries on Li-Ion technology of Electric and Hybrid Electric Vehicles. This  control unit is essential since several battery cells are unified to a cluster to enhance battery capacity. Lithium-Ion batteries require a prevention of voltage fluctuation during the process of battery charging. Thus BMS are essential to monitor state of charge, load distribution, temperature of each battery cell as well as of the whole battery package and development of the charging capacity.

Key features

  • Programmable in C
  • Permanent measurement of cell voltages
  • Over-temperature protection
  • Overcurrent / overvoltage detection
  • Safe relay (breaker) control (ASIL C)
  • Various definable Safe States
  • LIN and CAN bus interface
  • Crash detection
  • Overcurrent control fuse
  • Power supply with watchdog protection
  • Cell balancing of up to 6 Lithium-ion battery cells (14V)

Technical specification

  • Electrical current carrying capability:
    • 200 A continuous current
    • 800 A maximum current
  • Intrusive diagnostics (performed by MCU)
  • Memory storage (RAM & flash)
  • Power management (low power and normal mode)
  • LIN for starterbattery
  • CAN for auxiliary battery

Packages & Services

Reference design package

  • Schematic
  • Layout
  • Gerber files
  • Application software, low level NXP driver software (non-safe)
  • How-to-guide for ASIL C BMS design
  • Templates of Safety Documentation (Headings)
  • Summary FMEDA results

Board package

  • Reference Design plus
  • Hardware Board
  • Small How-to Guide for ASIL C BMS design
  • Detailed FMEDA results

Software package

  • Functional safety software developed according to ISO 26262 ASIL C
  • Diagnostic measures for yS32K
  • Documentation for Safety Software
  • Low Level Driver Software (functionally safe)
  • Application Software (Object Code, non-safe)

Safety package

  • Documentation ready for certification
  • Planning and management documentation
  • Safety documentation
    • Safety Plan
    • Safety Concept
    • V&V Plan
    • Requirements
    • Design Documents
    • FMEDA Analysis

Certification package

  • All inclusive management of safety certification of customer products and services by TÜV Süd (including hardware and embedded software)

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Information material
Weitere Informationen und Produktanfrage
Ihr Ansprechpartner
Thomas Mack
Produktmanager

NewTec GmbH
Buchenweg 3
89284 Pfaffenhofen a. d. Roth
Telefon +49 7302 9611-0
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