Wireless Charging Coil Air Cooling via Holder Flow Path
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Solution Overview
Problem
Wireless charging efficiency for electronic devices is compromised due to excessive heat generation, particularly when the devices are used in vehicles with displays activated at maximum brightness, leading to reduced charging performance.
Innovation Solution
An electronic device and wireless charging system that incorporates a fan to circulate air and cool both the charging unit and the external electronic device, utilizing holders to direct cooled air towards the device's display and rear face, thereby managing heat and enhancing charging efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If wireless charging is performed with display activated at maximum brightness, then user experience and visibility are improved, but heat generation increases and charging efficiency deteriorates
Solution Approach 1:
The patent introduces air as an intermediary cooling medium between the wireless charging device and the external electronic device. The air flow path allows heat to be dissipated from both the charging coil and the device body, enabling the display to operate at maximum brightness without compromising charging efficiency through active thermal management
2Productivity
If wireless charging power is increased, then charging speed is improved, but heat generation increases and causes performance deterioration
Solution Approach 1:
The patent extracts the thermal management function from the charging system by introducing a separate air circulation path. This allows high-power wireless charging to proceed while heat is continuously removed through the air flow path, preventing temperature-related performance degradation
Solution Approach 2:
The patent employs pneumatic cooling by forcing air through a defined flow path using a fan. This pneumatic system removes heat from both the charging coil and the external device, enabling high-power charging without excessive temperature rise that would degrade performance
3Loss of energy
If cooling system is added to manage heat, then charging efficiency is improved, but device complexity increases
Solution Approach 1:
The patent designs the air flow path to serve multiple functions simultaneously: it cools the charging coil, cools the external device body, and cools the display area. This multi-functional approach improves charging efficiency without proportionally increasing system complexity
Solution Approach 2:
The patent combines the cooling functions for the charging unit and the external device into a single integrated air circulation system. By merging these cooling requirements into one flow path, the system achieves effective thermal management while minimizing the added complexity
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 cools the electronic device during wireless charging, improving efficiency and maintaining performance even when used in vehicles with active displays, by actively managing heat through air circulation.
Implementation Method 1
a fan disposed inside the main body and pulling air through the intake hole, and a holder flow path that provides the air, which is circulated by the fan to each of the plurality of holders, toward the external electronic device
Implementation Method 2
the charging device including a coil that supplies power to an external electronic device
Data Source
AI summary
An electronic device is provided. The electronic device includes a main body; an intake hole formed at a first face facing a first direction in the main body; a fan disposed inside the main body and pulling air through the intake hole; a charging device disposed between the fan and a second face facing a second direction opposite to the first direction in the main body, and the charging device including a coil that supplies power to an external electronic device; a plurality of holders disposed to a side face in the main body, the plurality of holders holding the external electronic device mounted on the second face; and a holder flow path that provides the air, which is circulated by the fan to each of the plurality of holders, toward the external electronic device.