National Solid-State Battery Standards Open for Public Comment, Defining Classification and Testing Criteria

Recently, the national standard titled "Solid-State Batteries for Electric Vehicles – Part 1: Terminology and Classification" has entered a public consultation phase. For the first time, it clearly defines liquid, solid-state, and hybrid solid-state batteries: batteries with entirely liquid electrolytes are classified as liquid batteries; those with entirely solid electrolytes are solid-state batteries; and those containing a mixture of both are categorized as hybrid solid-state batteries. The standard also establishes quantitative testing methods, requiring solid-state batteries to exhibit a weight loss rate no higher than 0.5% to eliminate misleading "pseudo-solid-state" products. Although solid-state batteries show great potential in terms of safety and driving range, their large-scale commercialization in the near term remains limited by high costs, manufacturing challenges, and material stability issues. As an interim solution, semi-solid-state batteries have reduced their liquid content to approximately 5%. For example, the battery used in the SAIC MG4 demonstrates favorable performance in both safety and cost, though its market acceptance still needs validation. Experts advise consumers not to wait indefinitely for solid-state batteries to become commercially available.