Wireless Charging Fan Speed Control via Receiving Device Feedback
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Solution Overview
Problem
Conventional wireless charging systems generate heat during power transmission, leading to inefficient heat dissipation and noise due to fixed fan speed adjustments based solely on generated power, without considering the receiving device's charging configuration or environmental conditions.
Innovation Solution
An electronic device with a coil and dual circuits for power transmission and information reception, featuring a fan whose speed is adjusted based on feedback from the receiving device, allowing for dynamic power adjustment and optimized heat dissipation according to charging configuration and environmental information.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If the fan operates at high speed to dissipate heat during wireless charging, then heat dissipation is improved, but noise increases
Solution Approach 1:
The patent implements dynamic fan speed adjustment based on real-time temperature monitoring and receiving device information. The fan operates at variable speeds rather than fixed high speed, matching the cooling demand to actual thermal conditions and charging parameters, thereby reducing noise when full cooling capacity is not required.
Solution Approach 2:
The system uses feedback control by continuously monitoring temperature and receiving device charging status, then adjusting fan speed accordingly. This closed-loop control ensures the fan operates at the minimum necessary speed to maintain thermal safety, avoiding unnecessary noise generation.
2Temperature
If the fan operates at high speed to ensure adequate cooling, then temperature control is improved, but energy consumption increases
Solution Approach 1:
The fan speed is dynamically adjusted based on actual cooling requirements determined by temperature sensors and charging parameters. The system transitions from static high-speed operation to dynamic variable-speed operation, consuming energy only when and where thermal management demands it.
Solution Approach 2:
The system changes operational parameters by adjusting fan speed according to temperature conditions and receiving device charging status. This parameter adaptation allows the system to maintain effective temperature control while optimizing energy consumption by matching fan power input to actual cooling load.
3Device complexity
If fixed fan speed is used based on generated power, then device complexity is reduced, but heat dissipation efficiency deteriorates
Solution Approach 1:
The system implements feedback control by monitoring temperature and receiving device information, then using this data to adjust fan speed. This feedback mechanism transforms the simple fixed-speed system into an adaptive system that automatically optimizes heat dissipation efficiency based on real-time conditions without requiring complex manual intervention.
Solution Approach 2:
The system performs self-adjustment of fan speed based on its own temperature sensors and received charging parameters. The device autonomously determines optimal cooling requirements and configures fan operation accordingly, eliminating the need for external control while improving heat dissipation 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 approach prevents power wastage, reduces temperature rise, and minimizes noise by dynamically controlling fan speed based on real-time information from the receiving device, enhancing the efficiency and reliability of wireless charging.
Implementation Method 1
Wireless charging technology generally uses an electromagnetic induction method using coils
Implementation Method 2
a fan disposed adjacent to the coil to discharge heat to the outside of the electronic device
Data Source
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AI summary
According to various embodiments, an electronic device for charging a battery of an external device may include a coil and a first circuit configured to wirelessly transmit power to the external device through the coil. A second circuit may be configured to wirelessly receive information from the external device. A fan may be disposed adjacent to the coil to discharge heat to the exterior of the electronic device. A control circuit may adjust the driving speed of the fan based at least in part on the received information.