Wireless Charging Marker Design for Accurate Coil Positioning
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional parking assist systems fail to accurately designate the position of a power transmission coil for wireless charging due to limited display range of around view monitors, making it difficult to position the coil correctly for efficient charging.
Innovation Solution
A wireless power supply device with a marker system comprising two non-parallel segments, where one segment connects to another, allowing accurate designation of the power transmission coil's position using a predetermined intersection point and direction, enhancing visibility and recognition in bird's-eye view images.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the power transmission coil is located slightly far from the vehicle on the rear side, then the wireless power supply can be provided, but the power transmission coil cannot be displayed in the bird's-eye view image
Solution Approach 1:
The patent introduces a marker as an intermediary object that is visible in the bird's-eye view image. This marker serves as a mediator between the power transmission coil and the display system, allowing the coil's position to be indicated indirectly through the marker's position, thus resolving the contradiction between providing wireless power supply and maintaining visibility in the display.
Solution Approach 2:
The patent creates a visual copy or representation of the power transmission coil's position through the marker. Instead of displaying the actual coil which is not visible, the system creates a corresponding marker at a known spatial relationship to the coil, allowing the driver to locate the coil indirectly through its visual copy in the display.
2Device complexity
If the marker uses parallel segments, then the structure is simple, but the position designation accuracy is reduced
Solution Approach 1:
The patent applies asymmetry by using non-parallel segments in the marker instead of symmetric parallel segments. This asymmetric configuration creates a unique geometric relationship that allows for more accurate position and orientation determination, resolving the contradiction between structural simplicity and position designation accuracy.
3Device complexity
If the power transmission coil housing is used as the marker, then no additional components are needed, but the marker cannot be recognized when the vehicle direction changes
Solution Approach 1:
The patent segments the marker into multiple non-parallel segments rather than using a single integrated housing feature. This segmentation creates distinct visual elements with specific geometric relationships that can be reliably recognized and interpreted from different angles and directions, resolving the contradiction between component simplicity and directional adaptability.
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
Enables precise designation of the power transmission coil's position, improving parking accuracy and efficiency, even when the coil is not directly visible in the display, and maintaining accuracy despite marker deterioration or challenging environmental conditions.
Implementation Method 1
a wireless connection between power receiving coils provided in the vehicles and power transmission coils provided on the ground side
Data Source
Figure 1
Figure 2~3
Figure 4~5
AI summary
A wireless power supply device (100) includes a marker (M) provided closer to a side where a vehicle (200) enters when parked than a power transmission coil unit (102) housing a power transmission coil (12). The marker (M) includes at least two segments (m1, m2) not parallel to each other, and an end portion of one segment (m1) is connected to another segment (m2). The power transmission coil (12) is separated by a predetermined distance from a point of intersection (C2) of the two segments in a direction (CL1) in which the one segment (m1) extends.