Wireless Charging Device With Waveguide Housing For RF Energy Concentration
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Solution Overview
Problem
Existing wireless charging techniques are inefficient and require multiple dedicated chargers for different devices, and ambient RF energy harvesting is not sufficient for continuous use.
Innovation Solution
A novel charging device with a closed housing that uses electromagnetic radiation to create a maximal energy volume (MEV) within a charging zone, allowing efficient and fast charging of various devices regardless of their orientation, by optimizing the geometry and material composition of the housing and adjusting radiation parameters.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple dedicated chargers are used for different rechargeable consumer devices, then each device can be charged effectively, but the device complexity and number of charging devices increases
Solution Approach 1:
The patent applies universality by designing a single charging device with a standardized charging interface and electromagnetic radiation field that can charge multiple types of rechargeable consumer devices simultaneously. The charging device creates a universal charging environment through RF or microwave radiation that various devices can receive and convert to electrical energy for battery charging, eliminating the need for multiple dedicated chargers
2Ease of operation
If ambient RF energy harvesting is used for wireless charging, then wireless charging capability is achieved, but the energy available is insufficient for continuous uninterrupted use
Solution Approach 1:
The patent introduces an intermediary charging device that acts as a mediator between power sources and consumer devices. This charging device generates concentrated RF or microwave radiation fields that serve as an intermediate energy form, which devices can then receive and convert to electrical energy. This intermediary approach overcomes the insufficiency of ambient RF energy by providing a dedicated energy transmission medium
Solution Approach 2:
The patent applies parameter changes by significantly increasing the energy density and intensity of the radiation field compared to ambient RF environments. The charging device generates controlled RF or microwave radiation with parameters optimized for efficient energy transfer, transforming the low-energy ambient RF environment into a high-energy charging zone that can effectively recharge batteries for continuous use
3Power
If microwave power beaming is used for wireless charging, then wireless power transfer is achieved, but radiation leakage and safety concerns increase
Solution Approach 1:
The patent employs shielding structures analogous to flexible shells that contain the microwave or RF radiation within the charging device housing. These shielding layers prevent radiation leakage to the surrounding environment while allowing the concentrated energy field to exist within the charging zone, thus maintaining high power transfer capability without compromising safety
Solution Approach 2:
The patent converts the potentially harmful effect of radiation leakage into a beneficial contained energy field. By directing and confining the microwave or RF radiation within a controlled charging environment, the energy that could be harmful if leaked is instead beneficially concentrated for charging purposes, transforming a safety risk into a charging advantage
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
The solution enables efficient and fast charging of multiple devices with different shapes and sizes using a universal charger, maximizing energy transfer and minimizing radiation leakage, while ensuring safety through electrostatic shielding.
Implementation Method 1
an antenna arrangement positioned thereinside and configured and operable to emit electromagnetic radiation inside the housing
Implementation Method 2
The geometry and configuration of the inner surface of the housing may also provide substantially uniform distribution of the electromagnetic radiation within the charging zone
Implementation Method 3
The housing is configured to define an inner cavity for radiation propagation and a charging zone inside the housing in which the intensity of RF radiation emitted from the antenna arrangement is maximal
Implementation Method 4
The housing may be implemented in form of a Faraday cage
Data Source
Figure 1A~1B
Figure 2A
Figure 2B~2D
AI summary
The present invention provides wireless charging techniques and devices for charging electronic device(s) within a closed space defined by a substantially hollow housing containing an antenna arrangement and configured to define an inner cavity for propagation of electromagnetic radiation from the antenna arrangement. The housing has an inner surface, encompassing the inner cavity, which geometry and material composition selected to define a general propagation path for the predetermined electromagnetic radiation from the antenna arrangement towards a charging zone. The inner cavity of the housing operates as a waveguide for directionally guiding the electromagnetic radiation to the charging zone and providing substantially maximal intensity of the electromagnetic radiation within the charging zone.