Babycare Fly is an intelligent electric suitcase addressing the pain point of expanding walking distances in modern airports and high-speed rail stations. Featuring the industry's first 5-wheel chassis, it eliminates high-speed drifting and cornering-lean hazards inherent in conventional 3/4-wheel designs. The proprietary dual-front triple-rear geometry, combined with a low center-of-gravity body, delivers car-like stability with a 110 kg load capacity. Weighing only 5.7 kg, it is the lightest in its class, allowing effortless one-hand lifting and overhead-bin storage. The seamlessly switchable triple-mode system—riding, towing, and carrying—paired with a removable battery and intelligent dual-speed power system, transforms exhausting last-mile travel into an efficient, safe mobility experience for business travelers and families.

This project demonstrates in-depth thinking in functional innovation and user experience. The self-developed 5-wheel chassis with dual anti-tip protection fundamentally resolves the "fast but unstable" dilemma of traditional electric suitcases, ensuring confident riding across open terminals and crowded platforms. The handlebar enables one-button speed switching, while the removable battery design balances aviation compliance with flexible range management. At merely 5.7 kg, the optimized PC/ABS-aluminum composite body challenges the stereotype of bulky smart devices, allowing female users to lift it effortlessly with one hand. This design transforms travel from an endurance task into a graceful experience, relieving both physical and psychological burdens.

Launched into China's rapidly growing smart mobility segment, Babycare Fly targets a market exceeding 50 billion RMB with over 20% annual growth. As an emerging sub-category with less than 1% current penetration, electric suitcases show explosive momentum. The product's differentiated 5-wheel technology barrier and class-leading 5.7 kg weight establish strong brand recognition in the parent-child travel sector while attracting business and young female users. Listed on major e-commerce platforms, it has garnered significant industry and media attention, enhancing the brand's professional image in smart mobility and laying the groundwork for future product line extensions.

This project accelerates the evolution of traditional luggage into intelligent mobility devices. The 5-wheel chassis validation provides the industry with a viable path beyond 3/4-wheel solutions, shifting competitive focus from "rideable" to "safely rideable" and elevating technical standards. By reducing the weight barrier, the product transforms electric suitcases from novelty toys into genuinely practical travel tools, meeting universal demand for effortless mobility among families and business travelers. In terms of sustainability, the durable PC/ABS shell and aluminum frame extend product lifespan, while the modular removable battery facilitates independent maintenance and replacement, reducing electronic waste and embodying a design ethic that balances functional innovation with environmental responsibility.

The core team comprised industrial designers, structural engineers, electronics engineers, and a product manager. Industrial designers led product definition, aesthetic form, and human-machine interaction optimization, ensuring visual harmony between the 5-wheel layout and body proportions. Structural engineers directed chassis geometry calculations, wheelbase optimization, and 110 kg load validation, translating concepts into mass-production-ready structures. Electronics engineers developed the dual-speed brushless motor control system and removable battery management module, achieving precise torque delivery and aviation-grade safety. The product manager coordinated user research, competitive analysis, and go-to-market strategy, anchoring the product in family and business travel scenarios. Supply chain partners joined during mold development, assisting in precision manufacturing and cost control to ensure the innovative concept's manufacturability.

The design process began with ethnographic research at major transportation hubs, identifying the 1–2 km last-mile gap and instability as critical pain points. Concept development involved extensive mechanical simulations to determine optimal wheel geometry, resulting in the dual-front triple-rear 5-wheel layout. The team faced the challenge of achieving 5.7 kg class-leading weight without compromising the 110 kg load capacity, requiring iterative material selection between PC/ABS composites and aluminum alloys. Multiple prototype cycles refined the low center-of-gravity body, battery placement, and motor integration. Validation included rigorous road testing at Shanghai Pudong Airport, where high-speed cornering and uneven surface trials informed refinements to the dual anti-tip system and dual-speed motor calibration. Supply chain partners joined during DFM stages to resolve precision manufacturing constraints, ensuring the innovative chassis concept achieved mass-production feasibility while maintaining safety and performance standards.