GB/T 31467—2023《电动汽车用锂离子动力电池包和系统电性能试验方法》标准解读与分析  

Interpretation and analysis of GB/T 31467—2023:Electrical performance test methods for lithium-ion traction battery packs and systems in electric vehicles

作　　者：牛萍健 郝维健 苏智阳 师盛坤 柳邵辉[1] NIU Pingjian;HAO Weijian;SU Zhiyang;SHI Shengkun;LIU Shaohui(China Automotive Technology and Research Center Co.,Ltd.,Tianjin 300300,China)

机构地区：[1]中国汽车技术研究中心有限公司,天津300300

出　　处：《储能科学与技术》2024年第10期3672-3679,共8页Energy Storage Science and Technology

基　　金：中汽中心科技重大专项(ZX23240001)。

摘　　要：近年来,我国新能源汽车和动力蓄电池产业快速发展,相关标准的部分内容已不能适应产业发展需要,面向当前我国新能源汽车和动力蓄电池的使用场景需求,结合我国动力蓄电池电性能测试经验,充分参考相关国际标准,GB/T 31467—2023经修订后发布,为电动汽车用锂离子动力电池包和系统的电性能测试提供了方法。本文详细对比了GB/T 31467—2023与GB/T 31467.1—2015、GB/T 31467.2—2015以及ISO 12405-4:2018的测试项目与技术内容,并对通用测试条件、通用测试、基本性能测试等部分的修订内容进行了解释说明,可为相关动力电池产品研发和验证提供参考。标准在修订过程中,一方面考虑国内技术水平及整车对动力电池包和系统电性能的需求,增加了外观、极性、能量密度、充电性能以及工况放电的测试方法;另一方面,结合整车实际运行过程中的充放电电流以及运行环境,对所有测试项目的充放电电流进行修改,并对无负载容量损失、能量效率、高低温启动功率等测试项目的测试温度进行协调统一,有利于电动汽车用锂离子动力电池包和系统的研发和测试。In recent years,China's new energy vehicle and traction battery industries have experienced rapid development.Some existing standards have not kept pace with these advancements.To address the current needs of China's new energy vehicles and power batteries,GB/T 31467—2023 has been revised and released.This updated standard incorporates China's experience with traction battery electrical performance testing and aligns with relevant international standards.The standard outlines electrical performance testing methods for lithium-ion traction battery packs and systems.The paper compares the test items and technical content of GB/T 31467—2023 with those of GB/T 31467.1—2015,GB/T 31467.2—2015,and ISO 12405-4:2018.It details the revisions made to general test conditions,general tests,and basic performance tests,offering valuable insights for the development and verification of related traction battery products.The standard revision process took into account domestic technical advancements and specific demands of vehicle's for traction battery packs and systems.The revised standard introduces test methods for appearance,polarity,energy density,charging performance,and discharge under operating conditions.Adjustments have been made to the charging and discharging currents for all test items to reflect the actual conditions experienced during vehicle operation,aligning with real-world the charging and discharging currents and operating environments.The standard standardizes test temperatures for no-load state of charge loss,energy efficiency,and cranking power at both low and high temperature.This harmonization supports the development and testing of lithium-ion traction battery packs and systems for electric vehicles.

关 键 词：电动汽车 锂离子动力电池 动力电池包和系统 电性能 标准解读 

分 类 号：TM912.9[电气工程—电力电子与电力传动]