电车蓄电池模块的寿命周期测试

[中文适用范围]： 本SAE推荐实践定义了一种标准化测试方法，用于确定电动汽车电池模块的预期使用寿命（以循环次数计）。该方法基于一组标称或基本运行条件，旨在表征电性能随使用寿命的预期退化，并尽可能识别相关失效机制。加速老化不包括在本程序的范围内，尽管连续测试导致的时间压缩可能会无意中加速电池退化，除非仔细控制测试条件。基于失效机制定义加速老化条件测试矩阵并为结果建立统计置信度的过程，被认为超出了本文件的范围。本文件旨在尽可能使用标准测试条件，因此不同技术的评价结果应具有可比性。寿命终止（End-of-life）基于模块容量和功率额定值确定。这可能导致测得的循环寿命与基于实际容量确定的寿命不同；然而，这种方法允许电池制造商在建立电池模块额定值时进行功率和能量之间的必要权衡。这种方法被认为适用于成熟的设计或生产电池。请注意，本文件定义的过程在功能上等同于USABC基线寿命周期测试程序。 [外文原描述]： This SAE Recommended Practice defines a standardized test method to determine the expected service life, in cycles, of electric vehicle battery modules. It is based on a set of nominal or baseline operating conditions in order to characterize the expected degradation in electrical performance as a function of life and to identify relevant failure mechanisms where possible. Accelerated aging is not included in the scope of this procedure, although the time compression resulting from continuous testing may unintentionally accelerate battery degradation unless test conditions are carefully controlled. The process used to define a test matrix of accelerated aging conditions based on failure mechanisms, and to establish statistical confidence levels for the results, is considered beyond the scope of this document.Because the intent is to use standard testing conditions whenever possible, results from the evaluation of different technologies should be comparable. End-of-life is determined based on module capacity and power ratings. This may result in a measured cycle life different than that which would be determined based on actual capacity; however, this approach permits a battery manufacturer to make necessary tradeoffs between power and energy in establishing ratings for a battery module. This approach is considered appropriate for a mature design or production battery. It should be noted that the procedure defined in this document is functionally identical to the USABC Baseline Life Cycle Test Procedure.Cross Reference: J1715_201410,J1797_201608