US20250364176
2025-11-27
Electricity
H01F38/14
The patent application describes a dual-mode wireless power system designed for electronic devices such as smartphones and tablets. At its core, the system incorporates a nanocrystalline foil to enhance the efficiency and performance of wireless charging. This foil serves as a base for a wireless charging coil and is characterized by its unique material properties, including high permeability and flux density saturation, which surpass conventional ferrite materials.
This technology focuses on optimizing wireless charging systems, addressing challenges like size constraints and operational performance in compact electronic devices. By utilizing advanced materials like nanocrystalline foil, the system aims to improve the efficiency of inductive charging, especially when devices are misaligned or when external magnetic interference occurs.
The system includes several key components: a battery, a nanocrystalline foil, a wireless charging coil seated on this foil, and an integrated circuit to manage the coil's operation. The nanocrystalline foil is composed of multiple thin layers of ferrosilicon-containing material, providing superior magnetic properties. The design allows for efficient flux conduction and reduced material usage, enabling larger coil configurations within limited spaces.
The technology is applicable to various electronic devices beyond smartphones, including tablets, wearable tech like smartwatches and fitness devices, laptops, and other portable electronics. Its advantages include improved charging efficiency, reduced heat generation during charging, and enhanced performance even in the presence of metal or magnetic materials nearby. These improvements make it suitable for modern, compact device designs.
With the ability to incorporate larger coils and reduce material bulk, this technology offers significant design flexibility for device manufacturers. It supports more complex configurations that traditional materials might not accommodate. The technology's adaptability to different form factors ensures its relevance across a wide range of electronic products seeking efficient wireless charging solutions.