EV Wireless Power Transfer Fine Positioning and Pairing Control
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing electric vehicle (EV) wireless power transfer systems face inefficiencies in fine positioning and pairing, leading to misalignment and reduced power transmission efficiency, which affects the charging process.
Innovation Solution
A method and apparatus for controlling wireless power transfer in EVs that includes checking service details for fine positioning and pairing, performing Low Frequency (LF) pairing, and Low Power Excitation (LPE) pairing based on pre-charging power transmission efficiency, with the option to renegotiate positioning and pairing if efficiency is below a reference value.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If wireless power transfer is performed without fine positioning and pairing control, then the charging process can proceed without complex alignment procedures, but power transmission efficiency is reduced due to misalignment
Solution Approach 1:
The patent performs fine positioning and pairing procedures before initiating full wireless power transfer. The system checks service details, performs initial alignment checks, and establishes proper positioning in advance to ensure optimal power transmission efficiency before the actual charging process begins
Solution Approach 2:
The system continuously monitors power transfer efficiency during the charging process and performs renegotiation of positioning and pairing when efficiency drops below reference values. This feedback mechanism ensures sustained high efficiency by dynamically adjusting alignment based on real-time performance
2Productivity
If fine positioning and pairing procedures are implemented, then power transmission efficiency is improved, but the charging process requires additional control steps and time
Solution Approach 1:
Fine positioning and pairing are performed as preliminary steps before full power transfer begins. By establishing proper alignment in advance through service detail checks and initial alignment procedures, the system avoids interruptions during charging, ultimately reducing total charging time despite the added initial steps
Solution Approach 2:
The system dynamically adjusts positioning and pairing based on real-time power transfer efficiency. When efficiency drops below reference values, the system renegotiates alignment parameters and continues charging without complete interruption, optimizing the balance between positioning accuracy and charging speed
3Reliability
If dynamic renegotiation of positioning and pairing is performed based on real-time efficiency, then power transfer efficiency is maintained, but system complexity and processing requirements increase
Solution Approach 1:
The system implements a feedback mechanism that monitors power transfer efficiency and triggers renegotiation of positioning and pairing when efficiency falls below reference values. This ensures reliable power transfer by maintaining optimal alignment conditions throughout the charging process through continuous monitoring and adaptive adjustment
Solution Approach 2:
The system changes operational parameters such as positioning and pairing configurations based on real-time efficiency measurements. By adjusting these parameters dynamically when needed rather than maintaining fixed settings, the system achieves high reliability while managing complexity through conditional parameter modification
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
Improves wireless power transfer efficiency by ensuring accurate alignment and pairing, enhancing the reliability and effectiveness of the charging process through dynamic renegotiation based on real-time power transfer efficiency.
Implementation Method 1
performing an initial alignment check using pre-charging power transmission
Implementation Method 2
performing LF (Low Frequency) pairing
Implementation Method 3
performing Low Power Excitation (LPE) pairing
Data Source
AI summary
A method for controlling wireless power transfer (WPT), performed by an electric vehicle (EV) device receiving power from a supply device is provided. The method includes checking service details regarding at least one method for fine positioning and pairing between the supply device and the EV device and selecting a service. Fine positioning is performed with the supply device according to a pairing method associated with the selected service. Additionally, LF pairing is performed based on the selected service; an initial alignment check is performed using pre-charging power transmission; and LPE pairing is performed based on the selected service and a result of the initial alignment check.