Licensing Opportunity: Integration of Coils and Capacitors in Wireless Charging Systems
Closed Special Notice Posted
- Solicitation number
- 2024-04-03-C
- Agency
-
Department of Energy
- Responses due
- Set-aside
- No set-aside
Opportunity facts
- Place of performance
- Oak Ridge, Tennessee, United States
- Points of contact
Notice details come from SAM.gov. Updated .
About this opportunity
This Special Notice from the Department of Energy describes a licensing opportunity for an invention that integrates tuning capacitors with transmitter and receiver coils in wireless charging systems. The technology aims to address the voltage stress and complexity issues associated with long-distance wireless charging, particularly for applications such as unmanned aerial vehicles (UAVs) or drones.
The purpose of this licensing opportunity is to further develop and commercialize the integrated coil-capacitor technology, which can enable more efficient, controllable, and compact wireless charging systems. The Special Notice provides a technology summary, key benefits, and potential applications. Interested parties are invited to contact the Department of Energy by June 4, 2024 to learn more about licensing this invention. There are no set-aside requirements, and the opportunity is open to all eligible contractors and entities that can demonstrate the capability to further develop and commercialize the technology.
Notice text
Invention Reference Number: 202205252
Technology Summary
Wireless charging systems need to operate at high frequency, at or near resonance, to maximize power transfer distance and efficiency. High voltages appear across the inductors and capacitors. The use of discrete components reduces efficiency, increases system complexity. This technology is a system that integrates tuning capacitors with the transmitter and receiver coils, leading to better efficiency and control.
Description
One of the major obstacles to long distance wireless charging, such as is needed for unmanned aerial vehicles like drones, is the voltage stress on the components. Typically a copper coil has an external capacitor that resonates with that coil and enables power transfer. But as distance keeps increasing, the coupling between transmitter and receiver becomes challenging and the system must operate at increasingly higher frequencies. Especially, when larger amounts of power are required to be transferred, the voltage and/or current across the capacitor becomes very high and one needs capacitors in series and in parallel which drives up the complexity and may lead to unequal component stresses. This technology addresses these limitations by integrating the capacitor within the coil by incorporating a layer of dielectric material between copper foils that form the coil the capacitor. The result is that the technology enables different resonant topologies, including in series and parallel, that allows wireless and potentially UAV charging over long distances.
Benefits
- Better control
- More efficient
- Improves power density and system footprint
- Can be applied to single turn copper foil conductors, and several different types of tuning techniques
- Can be applied for multi-turn coils
Applications and Industries
- Drones
- UAV charging
Contact
To learn more about this technology, email partnerships@ornl.gov or call 865-574-1051.
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