ISO 17546:2024

Overview

ISO 17546:2024 - Space systems - Lithium ion battery for space vehicles - Design and verification requirements defines design and minimum verification requirements for lithium‑ion batteries used in space vehicles. The standard addresses battery assemblies and component cells (including commercial off‑the‑shelf (COTS) cells that may be repurposed for space). Its primary focus areas are performance, safety and logistics, and it aims to harmonize space battery requirements with applicable industry standards and regulations.

Keywords: ISO 17546, lithium ion battery for space vehicles, space battery standards, battery design verification, Li‑ion space battery safety

Key Topics

ISO 17546 covers technical topics and verification activities at both the cell and battery level, including:

• Cell performance tests: qualification, capacity measurement, C/n charge/discharge currents (C‑rate), cut‑off voltage, self‑discharge, impedance and internal resistance, energy and energy density, nameplate and nominal capacity/voltage.
• Safety tests: hazard identification, safety testing, protective devices, fault tolerance and hazard control measures.
• Environmental verification: thermal and thermal‑vacuum testing, mechanical environment testing, leakage/hermeticity, radiation testing and life‑cycle testing.
• Battery design controls: electrical, thermal and mechanical design, cell‑to‑cell balancing, cell matching criteria and contamination control.
• Verification and qualification: development testing, flight verification acceptance testing, qualification test levels/durations, test data trending and life‑estimation assurance.
• Logistics and traceability: manufacturing, storage, handling, transportation, lot integrity assessment and mission conformance tests for COTS cells.

Applications and Who Uses It

ISO 17546 is intended for organizations involved in the design, procurement, testing and certification of space vehicle batteries:

• Spacecraft manufacturers and system integrators
• Battery and cell designers for space applications
• Suppliers and OEMs offering space‑rated or re‑qualified COTS cells
• Test laboratories performing thermal‑vacuum, mechanical, radiation and life‑cycle tests
• Mission assurance, quality and safety engineers responsible for hazard controls and fault tolerance
• Regulatory bodies and procurement teams seeking standardized verification criteria

Using ISO 17546 helps ensure consistent performance, reliable safety mitigation and predictable logistics for lithium‑ion batteries in space missions, from launch through end‑of‑life.

Related standards and guidance

ISO 17546 is intended to be harmonized with other industry and regulatory documents covering batteries and space systems. Relevant program requirements and sector standards (spacecraft system standards, battery transport regulations and battery safety standards) should be consulted alongside ISO 17546 for complete compliance and mission conformance.