Interpretation and analysis of GB 38031—2025: Electric vehicles traction battery safety requirements

LI Zhengwei; NIU Pingjian; MA Tianyi; HAN Ce; HAO Weijian

doi:10.19799/j.cnki.2095-4239.2026.0074

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Interpretation and analysis of GB 38031—2025: Electric vehicles traction battery safety requirements

Energy Storage Standards | 更新时间：2026-07-28

- Interpretation and analysis of GB 38031—2025: Electric vehicles traction battery safety requirements
- Energy Storage Science and Technology Vol. 15, Issue 7, Pages: 2938-2944(2026)
- 作者机构：
  
  中国汽车技术研究中心有限公司，天津 300300
- 作者简介：
- 基金信息：
- DOI：10.19799/j.cnki.2095-4239.2026.0074
  CLC： TM 912.9
- Received：26 January 2026，
  
  Revised：2026-04-22，
  
  Online First：28 July 2026，
  
  Published：28 July 2026
- 稿件说明：
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李峥玮, 牛萍健, 马天翼, 等. GB 38031—2025«电动汽车用动力蓄电池安全要求»标准解读与分析[J]. 储能科学与技术, 2026, 15(7): 2938-2944.

LI Zhengwei, NIU Pingjian, MA Tianyi, et al. Interpretation and analysis of GB 38031—2025: Electric vehicles traction battery safety requirements[J]. Energy Storage Science and Technology, 2026, 15(7): 2938-2944.
李峥玮, 牛萍健, 马天翼, 等. GB 38031—2025«电动汽车用动力蓄电池安全要求»标准解读与分析[J]. 储能科学与技术, 2026, 15(7): 2938-2944. DOI： 10.19799/j.cnki.2095-4239.2026.0074.

LI Zhengwei, NIU Pingjian, MA Tianyi, et al. Interpretation and analysis of GB 38031—2025: Electric vehicles traction battery safety requirements[J]. Energy Storage Science and Technology, 2026, 15(7): 2938-2944. DOI： 10.19799/j.cnki.2095-4239.2026.0074.

摘要

安全是动力电池产业发展的核心议题，更是新能源汽车推广的重要保障。近年来，我国新能源汽车保有量持续攀升，但动力电池热失控、机械损伤等引发的安全事故时有发生，原GB 38031—2020标准已难以完全适配当前行业实际应用需求。新版GB 38031—2025作为该领域的关键强制性标准，紧跟行业与技术发展，在规范动力电池产品质量、引导安全技术提升以及统一测试方法中发挥了重要作用。本文基于近年来电动汽车安全事故复盘案例、行业技术调研数据及国际法规融合趋势，对该标准进行系统性解读，重点分析了2025版本与2020版本之间的核心变化。研究发现，新版标准在测试项目上进行了重要扩充，新增了快充循环后安全测试和底部撞击测试，并进一步提高了热扩散测试要求。在技术内容上，标准进一步明确了适用范围，并在多项试验方法中实现了与UN R100、UN GTR 20等国际法规的深度协调。GB 38031—2025的发布为企业技术研发与产品检测提供了清晰依据，响应了行业对动力电池全场景安全的迫切需求，对提升电动汽车安全水平具有重要意义。

Abstract

Safety is a core issue in the development of the traction battery industry and is crucial for promoting new-energy vehicles. In recent years

the number of new-energy vehicles in China has continued to rise; nevertheless

safety incidents caused by thermal runaway

mechanical damage

and other failures of traction batteries occur occasionally. The original standard GB 38031—2020 can no longer fully satisfy the actual application needs of the industry. The updated GB 38031—2025

as a key mandatory standard in this field

keeps pace with industrial and technological advancements and plays a significant role in regulating the quality of traction battery products

guiding improvements in safety technology

and unifying testing methods. Based on a review of accident cases involving electric vehicles in recent years

industry technology research data

and trends in international regulatory harmonization

this article provides a systematic interpretation of the standard

focusing on the key changes between the 2025 and 2020 versions. The new version of the standard introduces important expansions in testing items

including newly added safety tests after fast-charging cycles and bottom impact tests

along with further enhanced requirements for thermal propagation testing. In terms of technical content

the standard clarifies its scope of application and achieves deeper alignment with international regulations such as UN R100 and UN GTR 20 in multiple test methods. The release of GB 38031—2025 provides clear guidelines for corporate technology research

development

and product testing

addresses the industry's urgent need for all-scenario safety of traction batteries

and is of great significance for improving the safety level of electric vehicles. This article employs a comparative analytical approach

combining case studies and regulatory analysis to elucidate the rationale and practical implications behind the revisions. Emphasis is placed on how the updated testing protocols address real-world failure modes

thereby fostering more robust battery designs and validation processes. Furthermore

the alignment with global standards is discussed in the context of facilitating access to international markets and promoting technological consistency across regions. The findings underscore the role of GB 38031—2025 not only as a regulatory tool but also as a catalyst for innovation in battery-safety engineering. By establishing more comprehensive and stringent evaluation benchmarks

the standard encourages manufacturers to adopt advanced materials

improved thermal management systems

and more reliable structural protections. Ultimately

the implementation of this standard is expected to strengthen consumer confidence

support the sustainable growth of the new-energy vehicle sector

and contribute to the broader objectives of transportation electrification and energy security.

关键词

Keywords

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LI Zhengwei

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