Wireless Charging Power Control for Misalignment Detection
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Solution Overview
Problem
Wireless charging systems face inefficiencies due to misalignment of devices, leading to wasted channel resources and reduced charging efficiency, as devices continuously request increased power without the ability to align properly.
Innovation Solution
A method to detect misalignment by monitoring the output voltage of the wireless receiver circuit, adjusting the required charging power, and reducing the charging power to match the device's needs, thereby minimizing resource waste and improving alignment prompts.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If wireless charging is performed at high power, then charging speed is improved, but temperature increase and safety risks worsen
Solution Approach 1:
The patent implements periodic action by alternately performing power transmission and temperature measurement/cooling operations. The controller switches between transmitting power wirelessly and measuring temperatures or activating cooling mechanisms, preventing continuous high-power operation that would cause excessive temperature rise while still achieving efficient charging during power transmission phases.
Solution Approach 2:
The patent applies feedback by continuously monitoring temperatures of the power transmission device and charging device, then adjusting power transmission based on these measurements. When temperatures exceed predetermined thresholds, the controller reduces or pauses power transmission to prevent overheating, creating a closed-loop control system that balances charging speed with thermal safety.
2Reliability
If power transmission is continuously monitored for safety, then safety is improved, but device complexity and operation time worsen
Solution Approach 1:
The patent implements self-service by enabling the system to autonomously monitor its own temperature and adjust power transmission without external intervention. The controller automatically compares measured temperatures against predetermined thresholds and decides whether to continue, reduce, or pause power transmission, eliminating the need for complex external safety monitoring systems.
Solution Approach 2:
The patent merges the safety monitoring function with the existing power transmission control system. The controller that manages power transmission also performs temperature measurement and safety decisions, combining multiple functions into a single integrated control unit rather than adding separate complex safety systems.
3Temperature
If temperature measurement and cooling operations are performed frequently, then temperature control is improved, but charging time and energy loss worsen
Solution Approach 1:
The patent applies partial action by performing temperature measurement and cooling operations only when necessary, rather than continuously. The system measures temperatures at specific intervals and only activates cooling when temperatures approach predetermined thresholds, reducing the frequency of interruptive operations while still maintaining effective temperature control.
Solution Approach 2:
The patent changes operational parameters dynamically by adjusting power transmission levels based on temperature measurements. Instead of maintaining constant high power, the system modifies power levels in response to thermal conditions, allowing efficient charging during acceptable temperature ranges while preventing overheating.
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
Reduces channel resource waste and enhances charging efficiency by aligning devices effectively, ensuring optimal power delivery and reducing unnecessary communication requests.
Implementation Method 1
A wireless charging control method includes controlling a wireless charging device to transmit power to a charging device
Data Source
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AI summary
Provided are a wireless charging control method and a charging control apparatus. The wireless charging control method comprises: according to the output voltage of a wireless receiving circuit, determining whether the power of a wireless charging signal received by the wireless receiving circuit is able to reach a charging power currently required by a battery; and when the power of the wireless charging signal is not able to reach the charging power currently required by the battery, reducing the charging power currently required by the battery. The technical solution above may use the output voltage of the wireless receiving circuit as the basis for determining that the power of the wireless charging signal is able to reach the charging power currently required by the battery, and reduce the difference between the charging power received by the battery and the charging power required by the battery by means of reducing the charging power currently required by the battery, which is beneficial in ameliorating the request of a device to be charged for the power after being deflected, and reduce the occupation of channel resources.