Wireless Power Coil Perpendicular Movement
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Solution Overview
Problem
Conventional wireless power transmission devices face challenges in maintaining stable electromagnetic coupling over large distances between moving and stationary components, leading to reduced power transmission efficiency, particularly in applications where the moving distance exceeds the coil diameters.
Innovation Solution
A wireless powering device design featuring a first and second coil assembly, where the second coil is movable perpendicular to the magnetic lines generated by the first coil, maintaining constant distance and electromagnetic coupling intensity, even with large moving distances, and allowing for a single transmitting coil to power multiple receiving coils.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of moving object
If the distance between transmitting coil and receiving coil is increased to accommodate large moving distances, then the moving component can achieve larger movement range, but the magnetic flux passing through the receiving coil is drastically reduced and stable electromagnetic coupling cannot be ensured
Solution Approach 1:
The patent changes the movement direction from parallel to magnetic lines (longitudinal dimension) to perpendicular to magnetic lines (transversal dimension). This dimensional change allows the receiving coil to maintain constant distance from the transmitting coil while moving, thereby preserving magnetic flux and electromagnetic coupling stability throughout the movement range.
2Reliability
If the distance between transmitting coil and receiving coil is limited to coil diameter to ensure stable coupling, then electromagnetic coupling is maintained, but the moving distance is restricted to a small range
Solution Approach 1:
The patent enables large moving distances by restricting movement to the dimension perpendicular to magnetic lines, where distance to the transmitting coil remains constant. This allows the moving component to traverse a large area without compromising coupling stability.
Solution Approach 2:
The patent employs a movable receiving coil assembly that can dynamically adjust its position perpendicular to magnetic lines while maintaining electromagnetic coupling. The dynamic positioning capability allows the system to accommodate large moving distances while preserving stable power transmission throughout the movement range.
3Reliability
If physical connection power lines are used inside moving areas, then power transmission is reliable, but the power lines are subjected to physical wear resulting in safety issues and reduced equipment life
Solution Approach 1:
The patent replaces mechanical power transmission (physical power lines) with electromagnetic field-based wireless power transmission. This substitution eliminates physical wear on power lines while maintaining reliable power transmission to moving components, thereby extending equipment life and improving safety.
Solution Approach 2:
The patent introduces an electromagnetic field as an intermediary medium to transfer power from the stationary transmitting coil to the moving receiving coil. This intermediary enables power transmission without direct physical connection, avoiding the wear and safety issues associated with mechanical power lines in moving areas.
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
Ensures stable wireless power transmission over extended distances by maintaining electromagnetic coupling intensity, enabling reliable power delivery to moving components in applications like air conditioners and refrigerators.
Implementation Method 1
A wireless power transmission device generally comprises a transmitting coil and a receiving coil coupled to the transmitting coil
Implementation Method 2
the magnetic flux passing through the receiving coil is drastically reduced, and stable electromagnetic coupling between the transmitting coil and the receiving coil may not be sufficiently ensured
Data Source
AI summary
A wireless powering device comprising a first coil assembly including a first coil and a second coil assembly including a second coil. The second coil is adapted to be electromagnetically coupled with the first coil. One of the first coil and the second coil is used as a transmitting coil and another of the first coil and the second coil is used as a receiving coil. The second coil is movable with respect to the first coil in a direction perpendicular to a direction of magnetic lines generated by the transmitting coil.