Over the past decade, the electric vehicle industry has experienced unprecedented growth and diversification, resulting in a complex ecosystem. To effectively manage this multifaceted field, we present an EV-centric knowledge graph (EVKG) as a comprehensive, cross-domain, extensible, and open geospatial knowledge management system. The EVKG encapsulates essential EV-related knowledge, including EV adoption, electric vehicle supply equipment, and electricity transmission network, to support decision-making related to EV technology development, infrastructure planning, and policy-making by providing timely and accurate information and analysis. To enrich and contextualize the EVKG, we integrate the developed EV-relevant ontology modules from existing well-known knowledge graphs and ontologies. This integration enables interoperability with other knowledge graphs in the Linked Data Open Cloud, enhancing the EVKG's value as a knowledge hub for EV decision-making. Using six competency questions, we demonstrate how the EVKG can be used to answer various types of EV-related questions, providing critical insights into the EV ecosystem. Our EVKG provides an efficient and effective approach for managing the complex and diverse EV industry. By consolidating critical EV-related knowledge into a single, easily accessible resource, the EVKG supports decision-makers in making informed choices about EV technology development, infrastructure planning, and policy-making. As a flexible and extensible platform, the EVKG is capable of accommodating a wide range of data sources, enabling it to evolve alongside the rapidly changing EV landscape.

翻译：过去十年间，电动汽车产业经历了前所未有的增长与多元化发展，形成了复杂的生态系统。为有效管理这一多领域交叉领域，我们提出以电动汽车为中心的知识图谱（EVKG），作为全面、跨域、可扩展且开放的地理空间知识管理系统。EVKG整合了包括电动汽车普及率、电动汽车供电设备及电力传输网络在内的关键电动汽车知识，通过提供及时准确的信息与分析，支持电动汽车技术发展、基础设施规划及政策制定等决策。为丰富并情境化EVKG，我们集成了现有知名知识图谱与本体中开发的电动汽车相关本体模块。该集成使其能与关联数据开放云中的其他知识图谱实现互操作，从而增强EVKG作为电动汽车决策知识枢纽的价值。通过六项能力问题，我们展示了EVKG如何用于回答各类电动汽车相关问题，为电动汽车生态系统提供关键洞察。EVKG为管理复杂多元的电动汽车行业提供了高效方法。通过将关键电动汽车知识整合至单一易访问资源，EVKG支持决策者在电动汽车技术发展、基础设施规划及政策制定方面做出明智决策。作为灵活可扩展的平台，EVKG能够容纳广泛数据源，使其能随快速变化的电动汽车领域共同演进。