Wireless Charging Coil Active Cooling via Integrated Fan
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Wireless charging systems experience increased heat generation during high-power and quick charging, which can lead to usage restrictions and require effective cooling methods to manage heat effectively.
Innovation Solution
Incorporating a fan as an air circulation generation member within the wireless charging device, controlled by a temperature sensor and control circuit to actively cool the coil during charging operations, allowing for temperature monitoring and fan activation when heat thresholds are exceeded.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If high-power wireless charging is performed, then charging speed is improved, but heat generation increases
Solution Approach 1:
The cooling fan is activated in advance when the temperature reaches a threshold level, before excessive heat accumulation occurs. This preliminary cooling action prevents the temperature from rising to harmful levels while maintaining high-power charging operation
Solution Approach 2:
The temperature sensor continuously monitors the coil temperature and provides feedback to the control circuit, which adjusts fan operation accordingly. This closed-loop feedback system maintains temperature within acceptable ranges during high-power charging by dynamically controlling cooling based on real-time temperature conditions
2Temperature
If cooling fan is activated during charging, then heat dissipation is improved, but device complexity increases
Solution Approach 1:
The cooling system operates autonomously based on temperature feedback from the sensor. The control circuit automatically activates or deactivates the fan without user intervention, allowing the system to self-regulate its thermal management while maintaining relatively simple overall architecture
Solution Approach 2:
The control circuit serves as an intermediary between the temperature sensor and the cooling fan, processing temperature data and making decisions about fan activation. This intermediary layer simplifies the control logic while enabling effective thermal management
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
The solution effectively reduces heat generation and maintains efficient charging operations by actively cooling the wireless charging coil, ensuring reliable performance and extended device lifespan.
Implementation Method 1
A wireless charging device (system) can deliver energy wirelessly to a load without a transmission line by converting electric energy to electromagnetic waves
Implementation Method 2
a temperature sensor disposed inside the housing and in proximity to the coil
Implementation Method 3
a fan disposed inside the housing and in proximity to the coil... effectively cooling heat generated during a charging operation, by using an air circulation generation member (e.g., a fan)
Data Source
AI summary
An electronic device is provided. The electronic device includes a housing, a wireless charging coil disposed inside the housing, a fan disposed inside the housing and in proximity to the coil, a temperature sensor disposed inside the housing and in proximity to the coil, a wireless charging circuit having the coil and configured to transmit power wirelessly to an external device via the coil, and a control circuit electrically connected to the fan, the temperature sensor, and the wireless charging circuit. The control circuit may be configured to receive a signal from the external device, receive data related to a temperature of the coil from the temperature sensor, and control the fan at least partially on the basis of at least one of the signal and the data.