用于电子设备的固定型双层电容器 第2部分：中段规格——用于功率应用的双层电容器

[中文适用范围]： IEC 62391-2:2025 适用于电力用电双层电容器。电力用电双层电容器适用于需要放电电流在 mA 至 A 范围内的应用。电容器的特性包括相对较高的电容和低内阻等性能，适用于 IEC 62391-1:2022 中规定的测量分类的 3 级和 5 级。本文件的目的是指定首选的额定值和特性，从 IEC 62391-1:2022 中选择适当的质量评估程序、测试和测量方法，并给出此类电容器的一般性能要求。引用本文件的详细规范中规定的测试严酷度和要求提供了相同或更高性能水平的特定测试严酷度和要求。功率密度的定义及其计算程序可在附件 A 中找到。此版本与前一版本相比包括以下重大技术变化：a) 文件已完全重组以符合 ISO/IEC 指令第 2 部分； b) 引入了新的测试方法技术分类；c) 根据新的类别对测试方法进行了重新组织；d) 根据变化修改了表格、图表和参考文献。 [外文原描述]： IEC 62391-2:2025 applies to electric double-layer capacitors for power application. Electric double-layer capacitors for power are intended for applications that require discharge currents in the range from mA to A. The characteristics of the capacitors include such performance as relatively high capacitance and low internal resistance, which is applicable to Class 3 and Class 5 of the measurement classification specified in IEC 62391-1:2022. The object of this document is to specify preferred ratings and characteristics and to select from IEC 62391-1:2022 the appropriate quality assessment procedures, tests and measuring methods and to give general performance requirements for this type of capacitor. Test severities and requirements specified in detail specifications referring to this document provide specific test severities and requirements of an equal or higher performance level. The definition of power density and its calculating procedure can be found in Annex A. This edition includes the following significant technical changes with respect to the previous edition: a) the document has been completely restructured to comply with the ISO/IEC Directives, Part 2; b) introduction of a new technical categorization for the test methods; c) reorganization of the test methods have been according to these new categories; d) revision of the tables, figures and references according to changes.