025960-000010-0000001 Scope
1.1 These requirements cover a test method for the performance of battery system materials in response to the thermal and mechanical abrasive hazards presented during the thermal runaway of lithium-ion cells. The method evaluates materials intended to perform as a contingency by containing and/or redirecting the hazards (e.g., enclosure) as well as to evaluate component materials (e.g., busbar insulation, wire sheathing, gaskets) ability to maintain functional integrity during and after exposure to thermal runaway conditions.
1.2 Two methods are presented. Method A is a standardized method with set parameters that allows for the screening of various materials under a common condition. It also allows material performance to be ranked using the median number of full cycles and the maximum temperature of the back surface thermocouple reported under a standardized classification system. Method Custom allows for test parameters to be set to more directly assess the hazards associated with different battery cell geometries, chemistries, and energy densities and is useful in the research and design of specific systems.
1.3 The performance characteristics of a material determined by this Standard are not to be assumed to correlate with its performance in the end-use application. The actual response of materials depends upon the end-use design and application of the product using the material.
1.4 Tests conducted on a material under the conditions specified are intended to provide information when comparing the relative performance characteristics of different materials or assessing any change in performance characteristics prior to or during use.
1.5 This Standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this Standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use.