ISO 17546 is an international standard for the design and verification requirements of lithium-ion batteries for spacecraft in space systems. It applies to lithium-ion batteries used in spacecraft (including lithium-ion polymer batteries) and specifies the basic performance, safety and verification methods of batteries. The standard covers key performance indicators such as battery capacity, energy density, Operating temperature range, cycle life, as well as safety requirements such as explosion protection and fire protection. The verification part includes performance testing, safety assessment and environmental adaptability testing to ensure the Reliability and Stability of batteries in extreme space environments such as vacuum, temperature fluctuations. ISO 17546 provides comprehensive guidance for the design, validation, and integration of lithium-ion batteries for use in space.