With the continuous advancement of vehicle electrification and intelligence, traditional low-voltage power distribution technology can no longer meet the complex and variable power demands. This paper proposes a scenario engine-based intelligent low-voltage power distribution technology for vehicles. By real-time sensing of vehicle status, user habits, and environmental information, it dynamically optimizes power distribution strategies to achieve efficient energy allocation. The article elaborates on the technical principles, system architecture, and key technologies of the scenario engine, while analyzing its performance advantages through practical application cases. Research shows that vehicles equipped with this intelligent power distribution technology based on the scenario engine can reduce energy consumption by 15%~30%, significantly improving electric vehicle range and system reliability, providing important references for the future evolution of automotive electrical architectures.