Multi-Dimensional Wireless Charging Antenna Array
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Solution Overview
Problem
Existing wireless charging technologies face challenges in efficiently charging multiple devices over reasonable distances and orientations, with limitations in power coupling efficiency and convenience due to the need for precise alignment and close proximity between charging devices and receivers.
Innovation Solution
The implementation of multi-dimensional wireless charging systems using loop antennas and repeater antennas to enhance near-field coupling, allowing for efficient energy transfer over larger distances and varied orientations, and the use of multiple transmit antennas oriented in multiple planes to increase the charging area and flexibility.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If plane wave radiation coupling is used between transmit and receive antennas, then wireless charging can be achieved, but power coupling efficiency falls off quickly with distance
Solution Approach 1:
The patent transitions from traditional planar antenna arrangements to a three-dimensional configuration using multiple transmit antennas positioned at different heights and orientations. This multi-dimensional spatial arrangement creates overlapping electromagnetic fields that maintain coupling efficiency over greater distances, resolving the contradiction between wireless charging capability and power coupling efficiency loss with distance.
Solution Approach 2:
The patent combines multiple transmit antennas into a coordinated system that works together to charge devices. By merging the output of multiple antennas with different orientations and positions, the system creates a unified charging field that maintains efficiency across larger spatial volumes, addressing the power coupling efficiency problem.
2Quantity of substance
If inductive coupling between transmit antenna and receive antenna is used, then multiple devices can be charged simultaneously, but spacing between antennas must be very close
Solution Approach 1:
The patent employs vertical stacking of multiple transmit antennas at different heights, creating a three-dimensional charging volume. This allows devices to be charged simultaneously at various positions and orientations within the charging space, maintaining effective coupling without requiring antennas to be in close proximity, thus enabling multiple device charging with increased spacing.
Solution Approach 2:
The patent divides the charging function across multiple independent transmit antennas rather than using a single large antenna. Each antenna can independently couple with receive antennas of devices in different positions and orientations, allowing simultaneous charging of multiple devices while maintaining appropriate spacing between transmit and receive elements.
3Power
If fixed orientation wireless charger is used, then power delivery is optimized, but user convenience decreases due to placement requirements
Solution Approach 1:
The patent creates a dynamic charging system where multiple transmit antennas can be selectively activated based on the position and orientation of placed devices. The system adapts its configuration in real-time, switching between different antenna combinations to maintain optimal power delivery regardless of device placement, thus preserving both efficiency and user convenience.
Solution Approach 2:
The patent designs a multi-functional transmit antenna system that can effectively charge devices in various orientations and positions. By making the charging system universal across different device placements through multiple antenna configurations, it maintains power delivery efficiency while greatly enhancing user convenience and ease of operation.
4Area of stationary object
If multiple transmit antennas in multiple planes are used, then charging area and flexibility increase, but system complexity increases
Solution Approach 1:
The patent segments the charging function into multiple independent but coordinated transmit antennas arranged in different planes. Each antenna operates as a separate module that can be independently controlled and optimized, managing system complexity through modular design while achieving expanded charging area and flexibility.
Solution Approach 2:
The patent manages complexity by dynamically adjusting operational parameters such as which antennas are active, their power levels, and phase relationships based on device detection and positioning. This parameter-based control allows the system to adapt to different charging scenarios without requiring complex permanent hardware configurations for every possible device arrangement.
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 approach enables efficient and convenient wireless charging of multiple devices in various orientations and positions, improving power coupling efficiency and reducing the need for precise alignment, thus enhancing the usability and effectiveness of wireless charging systems.
Implementation Method 1
The implementation of multi-dimensional wireless charging systems using loop antennas and repeater antennas to enhance near-field coupling, allowing for efficient energy transfer over larger distances
Implementation Method 2
Other approaches are based on inductive coupling between a transmit antenna embedded, for example, in a 'charging' mat or surface and a receive antenna plus rectifying circuit embedded in the host device to be charged
Data Source
AI summary
Exemplary methods and systems related to wireless charging are disclosed. In an exemplary embodiment, a plurality of transmit antennas are used, wherein at least one transmit antenna of the plurality of transmit antennas is configured to be oriented in a different plane than at least one other transmit antenna of the plurality of transmit antennas. Furthermore, each transmit antenna of the plurality of transmit antennas is configured for transmitting power within an associated near-field.