The BAIC Group, a Fortune Global 500 company, has developed an Internet of Vehicles (IoV) cloud platform using MongoDB to manage the vast amounts of data generated by connected vehicles. The platform addresses various challenges such as large data volumes, high update frequencies, and complex data formats. With MongoDB's document model, GeoJSON, scalability, and security features, the platform can efficiently process and analyze vehicle data, providing intelligent and personalized services to vehicle owners, automotive companies, and traffic management departments. The use of MongoDB has significantly improved the Institute's data application efficiency, enabled real-time data processing, and ensured high performance and security. Looking ahead, BAIC plans to expand its data development and application capabilities using MongoDB to address emerging opportunities in vehicle data centers, application scenario implementation, and AI applications.