储能科学与技术

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GB/T 31486—2024《电动汽车用动力蓄电池电性能要求及试验方法》标准解读与分析

郝维健(), 牛萍健, 马天翼, 韩策, 柳邵辉()   

  1. 中国汽车技术研究中心有限公司，天津市 300300
  • 收稿日期:2025-01-07 修回日期:2025-04-18
  • 通讯作者: 柳邵辉 E-mail:haoweijian@catarc.ac.cn;liushaohui@catarc.ac.cn
  • 作者简介:郝维健（1992—），男，博士研究生，高级工程师，研究方向为动力电池标准化，E-mail：haoweijian@catarc.ac.cn；

Interpretation and analysis of GB/T 31486—2024 “Electrical performance requirements and test methods for traction battery of electric vehicle”

Weijian HAO(), Pingjian Niu, Tianyi MA, Ce HAN, Shaohui LIU()   

  1. China Automotive Technology and Research Center Co. , Ltd. , Tianjin 300300, Tianjin, China
  • Received:2025-01-07 Revised:2025-04-18
  • Contact: Shaohui LIU E-mail:haoweijian@catarc.ac.cn;liushaohui@catarc.ac.cn

摘要：

GB/T 31486—2015《电动汽车用动力蓄电池电性能要求及试验方法》是动力电池电性能领域的重要标准。近年来，随着新能源汽车和动力电池产业发展，动力电池产品形态呈现“无模组”化趋势，行业对于动力电池产品使用工况也更加了解，动力电池电性能水平较2015版制定时水平已有一定程度提升，因此，我国在2024年发布了GB/T 31486—2024《电动汽车用动力蓄电池电性能要求及试验方法》，并于2025年4月1日起实施。作为动力电池领域核心标准，该标准对于动力电池产品研发和验证意义重大。本文分析了GB/T 31486—2024制定背景和主要技术内容，对比了该标准与2015版本的异同点，修订内容主要体现在三方面：一是顺应“无模组”技术趋势，将测试对象由模组调整为单体，并增加测试样本量以强化一致性评估；二是基于实际工况数据优化测试条件，并引入动态环境适应终止机制；三是提升性能指标要求。GB/T 31486—2024注重与GB/T 31467—2023等国内标准的协调性，强化了测试结果对实际工况的反映能力，通过技术指标升级与测试方法革新，将引导企业提升产品性能与一致性控制水平，为我国新能源汽车产业高质量发展提供重要支撑。

关键词: 电动汽车, 动力电池, 电性能, 标准解读

Abstract:

GB/T 31486—2015 " Electrical performance requirements and test methods for traction battery of electric vehicle" is a critical standard in the field of traction battery electrical performance. In recent years, with the rapid development of the new energy vehicle and traction battery industries, battery product structures have evolved toward a "CTP(cell to pack)" trend, and the understanding of real-world operating conditions has deepened. Additionally, advancements in battery performance have surpassed the levels established in the 2015 version. Consequently, China published the revised GB/T 31486—2024 in 2024, which is implemented on April 1, 2025. As a core standard in the traction battery sector, it holds significant importance for product development and validation.This paper analyzes the background and key technical updates of GB/T 31486—2024, comparing its differences from the 2015 version. The revisions focus on three main aspects: Firstly, aligning with the "CTP" technological trend, the test objects are shifted from modules to cells, with increased sample sizes to enhance consistency evaluation. Secondly, test conditions are optimized based on real-world operational data, and dynamic environmental adaptation termination mechanisms are added. Thirdly, performance requirements are elevated.GB/T 31486—2024 emphasizes coordination with domestic standards such as GB/T 31467—2023, ensuring that test results better reflect actual operating conditions. By upgrading technical specifications and innovating testing methodologies, the revised standard will drive enterprises to improve product performance and consistency control, providing vital support for the high-quality development of China's new energy vehicle industry.

Key words: electric vehicle, traction battery, electrical performance, standard interpretation

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