Docking Charging Heads With Parallel Coils for Compact EV Wireless Charging
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Solution Overview
Problem
The installation of large power supply coils for wireless charging stations in electric vehicles is cumbersome, space-consuming, and aesthetically unappealing, requiring complex construction and lengthy permission processes.
Innovation Solution
A wireless charging system with parallel and coaxial coils in charging heads, allowing for compact design and avoiding underground installation, utilizing magnetic resonance charging technology to enhance efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If a large power supply coil is used to provide large amount of electric power quickly, then charging power is improved, but the coil occupies large space and obstructs aesthetics
Solution Approach 1:
The patent divides a single large power supply coil into multiple smaller coils arranged in parallel. This segmentation allows the system to maintain high charging power through parallel connection while reducing the area occupied by each individual coil, thus resolving the contradiction between power output and space occupation.
Solution Approach 2:
The patent combines multiple smaller coils in parallel to achieve the cumulative effect of a large coil. By merging the electrical functionality of multiple small coils, the system attains high charging power without requiring a single large coil that would occupy excessive space and affect aesthetics.
2Ease of operation
If a large power supply coil is buried under the ground for wireless charging, then charging service is provided, but construction works such as excavation and wire drawing cause noise and require lengthy permission processes
Solution Approach 1:
The patent segments the power supply system into multiple small coils that can be installed on the vehicle surface rather than requiring underground burial. This eliminates the need for complex construction works like excavation and wire drawing, significantly reducing installation complexity and noise while maintaining wireless charging functionality.
Solution Approach 2:
The patent extracts the power supply coils from the ground and relocates them to the vehicle surface. This extraction eliminates the need for underground installation and associated construction works, simplifying the installation process and removing the need for lengthy permission processes while preserving the wireless charging service.
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
Minimizes coil volume, reduces installation complexity and cost, and enhances user willingness by eliminating the need for underground construction.
Implementation Method 1
a power transmitting module and a power receiving module. The power transmitting module includes a first charging head and a plurality of first coils which are located on the first charging head and connected in parallel with each other. The power receiving module includes a second charging head and a plurality of second coils which are located on the second charging head and connected in parallel with each other. Thus, when the first charging head docks to the second charging head, each of the first coils faces and couples to one of the second coils.
Implementation Method 2
utilizing magnetic resonance charging technology to enhance efficiency
Data Source
AI summary
A wireless charging system includes a power transmitting module and a power receiving module. The power transmitting module includes a first charging head and a plurality of first coils which are located on the first charging head and connected in parallel with each other. The power receiving module includes a second charging head and a plurality of second coils which are located on the second charging head and connected in parallel with each other. Thus, when the first charging head docks to the second charging head, each of the first coils faces to one of the second coils.