Abstract: To address the high energy consumption issue in ultra-low humidity environment control for the new energy industry, this study proposes and analyzes an energy-saving system coupling heat pump and desiccant wheel dehumidification. The system utilizes the condensation waste heat recovered during the refrigeration process of heat pump units as the thermal source required for desiccant wheel regeneration, replacing traditional high-energy-consuming electric heaters to achieve efficient internal energy circulation. This paper first elaborates on the structural design and thermodynamic energy-saving principles of the coupled system. Subsequently, through mathematical modeling and case analysis methods, the system's performance is compared with the traditional "freezing + desiccant wheel + electric heating" scheme under typical lithium battery drying chamber conditions, while exploring the impact of key parameters on system energy efficiency. Finally, integrating intelligent manufacturing concepts, a data-driven intelligent control system framework is constructed. Case analysis and thermal calculations demonstrate that the coupled system exhibits significant energy-saving potential, achieving energy savings exceeding 40%. This study provides theoretical foundations and technical references for the design and application of high-precision, low-energy consumption environmental control systems in the new energy industry.