Multi-scale Collaborative Battery Storage Strategies in Integrated Building-E-mobility Energy Systems for Zero-carbon Transition

Abstract

The decarbonization of building-transportation integrated energy systems faces critical challenges, including the effective utilization of renewable energy, lifecycle carbon management, and system-level synergies. Although battery technology plays a crucial role in achieving zero-carbon transition, their deployment is constrained by multiple factors, such as dynamic degradation mechanisms, overlooked embodied carbon emissions, and insufficient integration of multi-energy interactions. This study addresses these challenges through four aspects: (1) a dynamic state-based battery strategy to mitigate degradation through depth-of-discharge and thermo-electric synergistic control, (2) a comprehensive battery lifecycle carbon intensity assessment that incorporates cascade utilization, dynamic operation, manufacturing, and recycling phases, (3) a collaborative strategy of the building-transportation integrated energy community towards carbon neutrality, (4) a capacity design method of distributed prosumer battery system. By advancing methodologies for battery degradation control and circular economy integration, the research bridges the gap between lifespan estimations and real-world dynamic behaviours of batteries. Additionally, by incorporating battery cascade utilization into lifecycle assessments, the framework demonstrates how second-life applications and multi-directional vehicle-to-everything interactions enhance renewable penetration while reducing embodied carbon impacts. The developed building-transportation integrated energy system frameworks address the neglected interdependence between grid-building-vehicle energy flows, enabling renewable integration and resource-efficient system design. Results highlight the economic and environmental benefits of distributed prosumer battery systems, alongside the critical role of adaptive battery application strategies in harmonizing grid-building-vehicle energy flows. By unifying operational dynamics with lifecycle sustainability metrics, this work provides actionable insights to accelerate net-zero transitions, emphasizing the interplay between technical, economic, and environmental feasibility in energy transformations.

Date of Award	2025
Original language	English
Awarding Institution	The Hong Kong University of Science and Technology
Supervisor	Yuekuan ZHOU (Supervisor) & Jinglei YANG (Supervisor)