ISO 19453-6:2020

Overview

ISO 19453-6:2020 - Road vehicles - Environmental conditions and testing for electrical and electronic equipment for drive system of electric propulsion vehicles - Part 6: Traction battery packs and systems - defines environmental and endurance test procedures for lithium‑ion traction battery packs/systems used in battery electric, hybrid electric and fuel cell electric road vehicles (passenger cars). The standard establishes classification rules (including voltage classes A and B), test boundary conditions and stress levels to evaluate battery reliability in realistic vehicle environments.

Key topics and technical requirements

ISO 19453-6:2020 covers the most relevant environmental stresses and required verification steps for traction battery packs and systems. Major technical topics include:

• Functional status and electrical checks

  • Equipotential bonding, insulation resistance and withstand voltage checks
  • Functional status classifications and operating modes

• Mechanical tests

  • Structural durability, strength and fixture requirements
  • Mechanical shock and vibration pre‑conditioning and durability cycles

• Thermal and climatic tests

  • Thermal cycling for packs with and without internal temperature control
  • Thermal cycling with electric operation, pre‑conditioning procedures
  • Damp heat, humid heat/condensation tests

• Ingress and environmental protection

  • Water protection (IP-related tests), dust protection
  • Leak tightness and internal temperature control system checks

• Corrosion and chemical resistance

  • Mixed gas corrosion, salt‑spray tests for external and internal mounting locations
  • Chemical resistance assessments for battery pack materials and seals

• Test planning

  • Classification of battery packs/systems and definition of stress levels
  • Guidance for creating a dedicated test plan agreed between customer and supplier
  • Informative annexes with example profiles, leak tests and acceptance criteria

Note: The standard is specific to passenger car traction batteries and applies to voltage classes A and B.

Applications and who uses this standard

ISO 19453-6:2020 is used to:

• Validate reliability and environmental robustness of lithium‑ion traction battery packs
• Define contract and acceptance test plans between OEMs and suppliers
• Guide design verification, product development and qualification testing
• Support test laboratories in implementing standardized climatic, mechanical and corrosion tests

Primary users: vehicle OEMs, battery system suppliers, test labs, qualification engineers, R&D teams, and compliance managers.

Related standards

• ISO 19453 series (other parts covering drive system components and testing approaches)
• ISO 6469-1 (RESS safety requirements)
• ISO 12405 series (battery performance and reliability testing)

ISO 19453-6:2020 helps organizations implement consistent environmental testing for traction battery systems, improving reliability, safety and interchangeability across electric vehicle platforms.