Wireless Charging Battery with RF Antenna and DC Output
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Solution Overview
Problem
Existing wireless power transmission systems face limitations in efficiently delivering power over larger distances due to low energy transfer rates and the need for close proximity between transmitter and receiver, especially in environments where RF exposure needs to be constrained, and many battery-powered devices are not capable of being retrofitted with charging-over-the-air technology.
Innovation Solution
A wirelessly chargeable battery apparatus and energy storage device with antennas configured to receive RF power, electronic circuit boards to convert it to DC power, and batteries to store the power, along with an output port to provide stored power via a cable, enabling efficient energy storage and delivery to devices that cannot be operated or recharged by conventional means.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of stationary object
If wireless power transmission is used to deliver power over larger distances, then the operational range is improved, but the energy transfer rate decreases due to power density reduction in free space
Solution Approach 1:
The patent employs adjustable antenna elements that can dynamically change their orientation and positioning to optimize the radiation pattern. This dynamic adjustment allows the system to maintain higher power density at greater distances by directing energy more effectively toward the receiver, thereby improving energy transfer rate while extending transmission distance.
Solution Approach 2:
The system changes the radiation pattern parameters by adjusting the tilt and azimuth angles of antenna elements. By modifying these geometric parameters, the patent optimizes power distribution in space, concentrating energy toward the intended receiver and maintaining efficient energy transfer rates even at larger transmission distances.
2Object-affected harmful factors
If RF exposure levels are limited in habited environments, then safety is improved, but power delivery is constrained to low power levels
Solution Approach 1:
The patent creates a localized high-power density region directed precisely at the receiver by adjusting antenna beam patterns. This allows high power delivery to the specific target while maintaining low RF exposure levels in surrounding habited areas, effectively separating the high-power transmission zone from protected environments.
Solution Approach 2:
The system dynamically adjusts antenna element orientations to concentrate RF energy only where needed at the receiver location. This dynamic beam forming capability enables high power delivery to the target while automatically reducing exposure in other directions, particularly in directions toward habited environments.
3Area of stationary object
If omnidirectional radiation is used, then coverage area is improved, but power density at any specific point decreases due to power being distributed in all directions
Solution Approach 1:
The patent uses adjustable antenna elements that can dynamically reconfigure the radiation pattern. Instead of fixed omnidirectional or directional patterns, the system can adaptively shape the beam to cover different areas while maintaining high power density at the specific receiver location, optimizing both coverage and power concentration.
Solution Approach 2:
The system applies local quality by creating high power density in the specific direction of the receiver while maintaining lower power levels in other directions. This selective power distribution allows the patent to achieve good coverage area through multiple antenna elements while concentrating sufficient power density at the target point.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This solution allows for efficient wireless power storage and delivery to devices, overcoming the limitations of existing systems by enabling power storage and reuse, thus extending the operational life of battery-powered devices without the need for physical recharging cords.
Implementation Method 1
one or more antennas configured to receive wireless radio frequency (RF) power from a wireless charging system
Implementation Method 2
one or more electronic circuit boards (PCBs) situated within the housing and configured to convert the received wireless RF power to direct current (DC) power
Implementation Method 3
one or more batteries configured to store the DC power
Data Source
AI summary
Systems and methods are described for receiving wireless power and providing wired power. In some embodiments, a wirelessly chargeable battery apparatus comprises a housing and one or more antennas situated within the housing. The antennas are configured to receive wireless radio frequency (RF) power from a wireless charging system. One or more electronic circuit boards (PCBs) situated within the housing are included, and the one or more electronic circuit boards are configured to convert the received wireless RF power to direct current (DC) power. The apparatus also comprises one or more batteries configured to store the DC power and a port configured to couple with a cable external to the housing and to provide stored DC power from the one or more batteries to the cable.