Biplane Wireless Power Pad Layout for Compact EV Charging
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Solution Overview
Problem
Electric vehicles face challenges in efficient and safe integration of wireless charging pads, particularly in optimizing space and increasing efficiency while maintaining safety, especially in applications like electric bus transit routes.
Innovation Solution
The development of a biplane wireless power transfer (WPT) pad system with multiple windings and magnetic structures, allowing for efficient power transfer across gaps and accommodating misalignment, while minimizing electromagnetic leakage and optimizing magnetic material usage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If wireless charging pads are embedded within limited space, then space utilization is improved, but power transfer efficiency and safety are reduced
Solution Approach 1:
The magnetic structure is divided into multiple segments (first magnetic structure and second magnetic structure) positioned at different heights, allowing the charging pad to maintain compact footprint while achieving effective magnetic coupling across the gap, thus resolving the contradiction between space utilization and power transfer efficiency
Solution Approach 2:
The patent introduces vertical dimension by positioning magnetic structures at different heights (first height and second height), transforming a two-dimensional planar problem into a three-dimensional solution, enabling efficient power transfer within limited horizontal space
2Area of stationary object
If wireless charging pads are embedded within limited space, then space utilization is improved, but safety is reduced
Solution Approach 1:
The magnetic structure is divided into multiple segments (first magnetic structure and second magnetic structure) positioned at different heights, allowing the charging pad to maintain compact footprint while achieving effective magnetic coupling across the gap, thus resolving the contradiction between space utilization and power transfer efficiency
Solution Approach 2:
The patent introduces vertical dimension by positioning magnetic structures at different heights (first height and second height), transforming a two-dimensional planar problem into a three-dimensional solution, enabling efficient power transfer within limited horizontal space
3Loss of energy
If multiple windings and magnetic structures are used, then power transfer efficiency is improved, but device complexity is increased
Solution Approach 1:
Multiple windings are combined within a single coil assembly, and multiple magnetic structures are integrated into a unified magnetic assembly, reducing the number of separate components while maintaining efficient magnetic coupling and power transfer
Solution Approach 2:
The magnetic structures serve multiple functions: guiding magnetic flux, providing mechanical support, and enabling alignment tolerance, thereby reducing the need for additional specialized components and simplifying the overall device architecture
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 biplane WPT pad system enhances power transfer efficiency, reduces electromagnetic leakage, and provides a compact design suitable for various applications, including electric bus charging, by utilizing multiple windings and strategically arranged magnetic structures to maintain consistent coupling and reduce unwanted electromagnetic flux.
Implementation Method 1
The biplane WPT pad system enhances power transfer efficiency, reduces electromagnetic leakage, and provides a compact design suitable for various applications, including electric bus charging, by utilizing multiple windings and strategically arranged magnetic structures to maintain consistent coupling and reduce unwanted electromagnetic flux.
Implementation Method 2
by utilizing multiple windings and strategically arranged magnetic structures to maintain consistent coupling and reduce unwanted electromagnetic flux
Implementation Method 3
The biplane WPT pad system enhances power transfer efficiency, reduces electromagnetic leakage, and provides a compact design suitable for various applications
Data Source
AI summary
Described herein is a structure, the implementation of which may result in optimization of power transfer within a wireless power transfer pad. Such a structure comprises two planes in parallel that each comprise multiple windings. Additionally, the structure may include two magnetic structures that each pass through the centers of the multiple windings of one of the respective planes. In some embodiments, a magnetic structure may include a main section and two vertical sections. In some cases, the magnetic structure may further include at least one side section that connects with a vertical section.