Wireless Power Reception Frequency Adaptation
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing wireless power transmission systems face inefficiencies in maintaining optimal power transmission frequency due to varying relative distances and state of charge parameters, leading to suboptimal power transfer efficiency and prolonged charging times.
Innovation Solution
A power reception apparatus utilizing resonant magnetic coupling, equipped with a relative distance detection section, power transmission efficiency detection, a database storing resonance frequencies corresponding to relative distances and state of charge parameters, and a power transmission frequency setting section to dynamically adjust the transmission frequency for improved efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a fixed initial default value of resonance frequency is used for wireless power transmission, then the device configuration is simple, but the power transmission efficiency deteriorates when relative distance or state of charge varies
Solution Approach 1:
The patent applies dynamics by transitioning from a fixed resonance frequency to a dynamically adjustable resonance frequency that adapts to changing conditions. The power reception apparatus detects relative distance and state of charge parameters, then selects appropriate resonance frequencies from a database to maintain optimal power transmission efficiency under varying conditions.
Solution Approach 2:
The patent implements parameter changes by modifying the resonance frequency parameter based on detected conditions. A database stores multiple resonance frequency values corresponding to different combinations of relative distance and state of charge parameters. The system selects and applies the appropriate frequency parameter to optimize power transmission efficiency for each specific condition.
2Ease of operation
If resonance frequency is not adjusted according to relative distance and state of charge, then the operation is simple, but the power transmission time increases
Solution Approach 1:
The patent applies preliminary action by pre-storing multiple resonance frequency values in a database before actual power transmission occurs. The system pre-prepares frequency selections corresponding to various combinations of relative distance and state of charge parameters, enabling rapid frequency selection during operation without complex real-time calculations.
Solution Approach 2:
The patent implements feedback by detecting actual operating conditions (relative distance and state of charge) during power transmission and using this information to select the appropriate resonance frequency. The system continuously monitors parameters and adjusts frequency selection to maintain optimal transmission efficiency.
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
This solution enables prompt setting of optimal power transmission frequencies, enhancing efficiency and reducing charging time by accounting for relative distance and state of charge variations, while simplifying the configuration of both the power transmission and reception apparatuses.
Implementation Method 1
a power reception apparatus uses resonant magnetic coupling to receive wireless power transmission from a power transmission apparatus
Implementation Method 2
power reception coil configured to receive power from a power transmission coil of the power transmission apparatus
Data Source
AI summary
A power reception apparatus includes a power reception coil, a relative distance detection section, a power transmission efficiency detection section, a database, a power transmission frequency setting section, and a power transmission request section. The power transmission frequency setting section is configured to read from the database a resonance frequency corresponding to a combination of a relative distance and an initial transmission efficiency and to set the read resonance frequency as a power transmitting frequency. The power transmission request section is configured to notify the power transmission apparatus of the power transmission frequency set by the power transmission frequency setting section to request wireless power transmission with the power transmission frequency.