Wireless Charging Coil Layout With Harmonic Filtering and Modulation
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current wireless power transmission and reception systems face challenges in reducing power loss and increasing transmission efficiency, particularly in harmonizing data transmission and wireless charging between devices.
Innovation Solution
The system includes a wireless power transmission device with a power amplifier, harmonic filter, secondary inductor, and modulator, and a wireless power reception device with a power processing circuit and modulator, where coils are strategically positioned and configured to optimize power transfer and signal communication, allowing for efficient power transmission and data exchange.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If wireless power transmission is implemented using electromagnetic induction between coils, then power can be transmitted wirelessly between devices, but power loss increases and transmission efficiency decreases
Solution Approach 1:
The patent applies parameter changes by optimizing coil specifications (area, number of turns), adjusting operating frequency, and modifying magnetic core materials to reduce power loss and improve transmission efficiency. The system dynamically adjusts transmission parameters based on coupling conditions between transmitter and receiver coils.
Solution Approach 2:
The patent introduces magnetic cores and shielding materials as intermediaries to enhance magnetic coupling between coils. These intermediary components concentrate and guide magnetic flux, reducing leakage and improving power transfer efficiency while minimizing electromagnetic interference with surrounding devices.
2Adaptability or versatility
If data transmission and wireless charging are performed simultaneously between devices, then communication capability is improved, but interference between data and power signals increases
Solution Approach 1:
The patent segments the coil system into separate transmit and receive coils with distinct functions. Data transmission and power transfer are performed through separate coil pairs, physically separating the signal paths to minimize interference while maintaining simultaneous operation capability.
Solution Approach 2:
The patent employs periodic time-division multiplexing where data and power transmission occur in alternating time slots. This periodic action allows both functions to operate simultaneously without continuous interference, as each coil pair is actively used for one function at a time.
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 configuration enhances power transmission efficiency and harmonizes data and power transfer, minimizing interference and optimizing the performance of wireless charging systems.
Implementation Method 1
Wireless power transmission technology may refer to a method of transmitting power using an electromagnetic field induced in coils so that a current may be supplied to a transmission coil to generate an electromagnetic field and an induced current may be obtained in a reception coil by the generated electromagnetic field
Implementation Method 2
a harmonic filter configured to filter the first power provided to the first coil
Implementation Method 3
a secondary inductor magnetically coupled to a resonant inductor included in the harmonic filter
Data Source
AI summary
According to an embodiment, a wireless power reception device may include: a housing, a first coil, and a power processing circuit configured to process power wirelessly received from the outside through the first coil. The housing may include a first surface facing a first direction, a second surface facing a second direction opposite the first direction, and a third surface surrounding a space between the first surface and the second the surface. The width of the third surface may be smaller than the width of the first surface. The first coil may be disposed in a region including a region substantially parallel to the third surface.