To better understand the current status and development of new energy vehicle (NEV) safety studies and explore the knowledge base and research hotspots, 1,007 papers related to NEV safety studies from 2000–2020 were collected from the Web of Science Core Collection database as data samples. The bibliometric method and mapping knowledge domain technology were used to visually analyze the knowledge structure and research trends in the field of NEV safety studies. The study found that publications in the United States rank first among countries/regions. Tsinghua University has the most publications in related research; the disciplines of NEV safety research mainly focus on energy and fuel, chemistry and electrochemistry; and the Journal of Power Sources, International Journal of Hydrogen Energy and International Journal of Crashworthiness are the core journals in the field. New energy exploration and application as well as performance improvement/lifetime optimization/use safety of lithium-ion batteries are the research knowledge bases in the field. Lithium-ion batteries, fuel cell and hydrogen energy safety, autonomous driving technology, computer simulation, and vehicle crashworthiness are the five main research directions. Research on the safety of NEVs has basically formed a theoretical research framework, but the system construction of various research directions has not yet been fully formed. The research topics are concentrated, but a clear evolutionary path has not been formed. The current research hotspots and frontiers are how to improve the performance of lithium-ion batteries, the safety of fuel cells, the autonomous driving technology and the crashworthiness of NEVs.

为了更好地了解新能源汽车（NEV）安全研究的现状和发展，并探索知识库和研究热点，从Web of Science核心文献数据库中收集了2000-2020年与NEV安全研究相关的1,007篇论文作为数据样本。 。文献计量法和测绘知识领域技术被用来直观地分析新能源汽车安全研究领域的知识结构和研究趋势。该研究发现，美国的出版物在国家/地区中排名第一。清华大学相关研究的出版物最多。新能源汽车安全研究的学科主要集中于能源和燃料，化学和电化学。以及《动力源》，《国际氢能与动力》杂志国际耐撞性杂志是该领域的核心期刊。锂离子电池的新能源探索与应用以及性能改善/寿命优化/使用安全性是该领域的研究知识库。锂离子电池，燃料电池和氢能安全性，自动驾驶技术，计算机仿真和车辆防撞性是五个主要研究方向。对新能源汽车安全性的研究已基本形成理论研究框架，但各个研究方向的系统建设尚未完全形成。研究主题是集中的，但尚未形成清晰的进化路径。当前的研究热点和前沿是如何改善锂离子电池的性能，燃料电池的安全性，自动驾驶技术以及新能源汽车的耐撞性。