Wireless Power Transmission Alignment Control for Heat Reduction
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Solution Overview
Problem
As communication technology advances, electronic devices face increased current consumption during data transmission and reception through OTA networks, leading to potential efficiency reductions and heat issues during wireless power transmission.
Innovation Solution
An electronic device equipped with a wireless transmission circuit and a processor that can detect the power reception status of a wireless power reception device, allowing for the adjustment of power supplied to the wireless transmission circuit based on the device's alignment state, thereby controlling heat generation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If high power is transmitted from wireless power transmission device to power reception device, then charging speed is improved, but heat generation and efficiency reduction occur
Solution Approach 1:
The patent implements dynamic power adjustment by switching between first and second power levels based on real-time alignment detection. The system transitions from high power (first power) to reduced power (second power) when misalignment is detected, and can restore high power when alignment is achieved, creating a dynamic response to changing conditions that prevents overheating while maximizing charging speed when possible
Solution Approach 2:
The system uses feedback from alignment detection results to control power transmission levels. The processor continuously monitors alignment status and adjusts power output accordingly, creating a closed-loop control system that responds to actual device conditions rather than operating at fixed power levels
2Power
If high current is supplied to wireless transmission circuit, then power transmission capability is improved, but heat generation increases
Solution Approach 1:
The system dynamically adjusts current levels based on alignment status, switching between first current (high power mode) and second current (reduced power mode). This dynamic current control allows the system to transmit high power when alignment is good while reducing current and heat generation when misalignment occurs
Solution Approach 2:
The patent changes the electrical parameters (current and voltage) of the wireless transmission circuit based on detected alignment conditions. By adjusting these parameters dynamically, the system optimizes power transmission capability while controlling heat generation through parameter modification rather than fixed operation
3Temperature
If power reduction mode is activated, then heat control is improved, but charging efficiency may be reduced
Solution Approach 1:
The system employs periodic power adjustment by alternating between high power and reduced power modes based on continuous alignment monitoring. This periodic switching allows the system to achieve effective heat control through intermittent power reduction while maintaining overall charging efficiency by restoring high power when alignment conditions improve
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 quick temperature control of external devices by minimizing heat control intervals and optimizing charging times, ensuring efficient and safe wireless charging operations.
Implementation Method 1
various wireless charging technologies capable of wirelessly charging a battery without physically contacting an electronic device to a charging device using electromagnetic waves, magnetic induction, or magnetic resonance have been developed recently
Implementation Method 2
An increase in supplied power may be arise and efficiency reduction and/or heat may occur
Data Source
AI summary
An electronic device is provided. The electronic device includes a wireless transmission circuit for transmitting power to a power reception device, and a first processor. When entering a power reduction mode, with respect to a first voltage and a first current being output from the wireless transmission circuit, the first processor includes, in case that the power reception device is in an align state, lower a voltage of the wireless transmission circuit to a second voltage lower than the first voltage and lower a current flowing in the electronic device to a second current lower than the first current, and, in case that the power reception device is in a misalign state, lower a voltage of the electronic device to a third voltage lower than the second voltage and lower a current flowing in the wireless communication circuit to a third current lower than the second current.