标准摘要
[中文适用范围]： 本推荐实践(RP)建立了用于评估推进电池组防水密封性的非破坏性在线生产测试方法。它旨在使用SAE J3277中定义的选择等效通道(EC)方法实现与IEC 60529标准IPX7级别相当的结果。本RP为系统设置、工具设计、验证和泄漏测试程序提供指导。它承认某些电池组设计的局限性，并推荐适当的空气或示踪气体密封技术。 [外文原描述]： This technical information report (IR) presents a methodology to evaluate battery pack liquid leak tightness attributes to be used in a production line to satisfy the functional requirement for IPX7, water ingress requirement, and no sustainable coolant leakage for coolant circuits. The Equivalent Channel Method is used as a suggested production leak tightness requirement for a given battery pack design that will correlate and assure that the battery pack meets or exceeds its functional requirement. Obtaining the specific geometry of the Equivalent Channel (EC) for a given battery pack is done analytically and empirically in consideration of the product design limitations. This document is a precursor to J3277-1, which will present the practices to qualify that product leak tightness is equal or better than the maximum allowed EC for that product using applicable and commercially available leak test technologies. This document may be applied to EV and HEV battery packs as tested during production, without harnesses or other accessories installed by the OEM during vehicle assembly.
英文名称Liquid Leak Tightness Evaluation Methodology for EV Battery Packs Informational Report