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This study reviews German battery management system (BMS) standards, finding they lack measurable benchmarks for critical functions like state of charge (SoC) and state of health (SoH). It suggests updates for improved performance, interoperability, and safety.

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Area of Science:

  • Electrical Engineering
  • Materials Science
  • Automotive Engineering

Background:

  • Battery performance and safety critically rely on Battery Management Systems (BMS).
  • Existing BMS standards and regulations must evolve with rapid battery technological advancements and increasing system complexity.
  • Germany is a significant contributor to the global battery sector, making its standards influential.

Purpose of the Study:

  • To review and analyze current German standards and regulations for BMS.
  • To identify gaps and limitations in existing BMS requirements, particularly concerning functional and non-functional aspects.
  • To propose improvements for BMS standards to enhance performance, interoperability, and safety.

Main Methods:

  • Systematic review of current German standards and regulations pertaining to BMS.
  • Categorization of requirements into functional/non-functional and qualitative/quantitative.
  • Mapping of standards to specific BMS functions, including state monitoring and energy management.

Main Results:

  • Most current standards primarily address qualitative aspects of BMS.
  • A significant lack of measurable benchmarks exists for critical BMS functions, especially State of Charge (SoC) and State of Health (SoH) monitoring.
  • Emerging areas like second-life batteries and cloud-based BMS require new standardization efforts.

Conclusions:

  • There is a pressing need for consistent definitions and quantitative performance requirements in BMS standards.
  • Addressing identified gaps will enhance BMS performance, interoperability, and overall battery safety.
  • Future standards must incorporate evolving technologies and applications, such as second-life and cloud BMS.