Single Motor Inductive Charging Antenna Positioning
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Solution Overview
Problem
Existing inductive recharging devices for electronic elements like mobile phones and digital tablets require precise positioning of emitting and receiving antennas to ensure efficient charging, which is often compromised by user error or movement, leading to inefficiencies, and current solutions involving multiple motors or antennas are costly and complex.
Innovation Solution
A device with a single motorized actuating mechanism, utilizing a circular main drive element and guide fingers or pulleys, allows for efficient adjustment of the emitting antenna's position relative to the receiving antenna, reducing costs and complexity while maintaining efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple electric motors are used to adjust the position of the emitting antenna stage, then the positioning accuracy and charging efficiency are improved, but the device cost and structural complexity increase significantly
Solution Approach 1:
The patent combines the functions of multiple motors into a single motor system. The single motor drives a circular main drive element that coordinates the movement of multiple guide fingers, thereby adjusting the position of the emitting antenna stage along both x and y axes without requiring separate motors for each direction. This merging approach reduces component count and complexity while maintaining positioning capability.
Solution Approach 2:
The single motor is designed to perform multiple functions: it simultaneously controls the positioning of the emitting antenna stage in two dimensions (x and y directions) through the circular main drive element and guide fingers. This multi-functional design eliminates the need for dedicated motors for each adjustment direction, reducing overall system complexity while preserving positioning accuracy.
2Measurement precision
If two electric motors are used to control the stage position, then the positioning precision is improved, but the control electronics complexity and cost increase due to duplication
Solution Approach 1:
The control system is merged into a single control unit that manages the single motor's operation. The circular main drive element translates single-motor rotational output into coordinated two-dimensional stage movement, eliminating the need for duplicate control electronics that would be required for multiple independent motors. This reduces both electronic component count and control software complexity.
3Adaptability or versatility
If multiple emitting antennas are provided to cover all charging scenarios, then the adaptability to different phone positions is improved, but the device cost and structural complexity increase
Solution Approach 1:
Instead of providing multiple static antennas, the patent implements a dynamic positioning system where a single emitting antenna is mounted on a movable stage. The stage can be dynamically adjusted to different positions and orientations using the single motor and guide finger mechanism, allowing the antenna to be precisely positioned relative to the receiving antenna regardless of the phone's placement on the charging surface.
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 cost-effective and compact recharging devices that can adapt to various positions of electronic elements, improving charging efficiency and reducing the need for duplicate control electronics, while allowing for a larger charging area coverage.
Implementation Method 1
a motor meshing with a periphery of the main drive element and driving the main drive element in rotation
Implementation Method 2
Device for the inductive recharging of an electronic element... bearing at least one emitting antenna intended to be aligned with, and in close proximity to, said at least one receiving antenna
Data Source
AI summary
A device for the inductive recharging of an electronic element of the mobile-phone or digital tablet type having at least one receiving antenna. The device having an exterior face intended to support the electronic element, a stage of planar shape being able to move inside the device and bearing at least one emitting antenna intended to be aligned with, and in close proximity to, the at least one receiving antenna, the mobile stage being actuated by a motorized actuating mechanism. The actuating mechanism includes a single motor coupled to a main drive element that renders the stage mobile in a plane parallel to the exterior face of the device, the main drive element being circular in shape, and the motor meshing with a periphery of the main drive element and driving the main drive element in rotation.