Wireless Charging Thermal Layout With Fan-Driven Air Passage
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Solution Overview
Problem
Traditional wireless charging devices have poor heat-dissipation performance, leading to rapid temperature increases during charging due to low heat-dissipation efficiency.
Innovation Solution
A wireless charging device incorporating a shell with air ports and a heat dissipation assembly that includes a heat sink and a fan, where the fan is strategically positioned to create a heat-dissipation air passage, effectively transferring heat generated by the coil and main board assemblies to the exterior.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If wireless charging is implemented using traditional designs, then charging function is achieved, but heat dissipation performance is poor and temperature rises rapidly
Solution Approach 1:
The wireless charging device is segmented into distinct functional zones: a first region housing the coil assembly for wireless charging, and a second region housing the heat dissipation assembly. This spatial segmentation allows the heat-generating components and heat dissipation components to be separated, enabling more effective heat management without interfering with the charging function.
Solution Approach 2:
A heat dissipation assembly acts as an intermediary between the heat-generating coil assembly and the external environment. This assembly includes heat dissipation fins that extend outward to increase surface area, and a fan that facilitates heat transfer from the coil assembly through the heat dissipation fins to the surrounding air, effectively mediating the heat removal process.
2Temperature
If heat dissipation assembly is added to improve cooling, then temperature control improves, but device structure becomes more complex
Solution Approach 1:
The heat dissipation assembly is merged with the shell structure of the wireless charging device. The heat dissipation fins are integrated into the shell, and the fan is positioned within the housing structure. This merging allows the heat dissipation function to be achieved without adding separate, bulky components, thereby reducing overall structural complexity while maintaining effective cooling.
Solution Approach 2:
The shell of the wireless charging device serves multiple functions: it provides structural support, houses the internal components, and simultaneously acts as part of the heat dissipation system through integrated heat dissipation fins. This multi-functionality reduces the need for additional dedicated heat dissipation structures, simplifying the overall device design.
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 significantly improves heat dissipation, reducing the temperature of the wireless charging device and ensuring efficient cooling, thereby enhancing its operational performance and user experience.
Implementation Method 1
a heat dissipation assembly, configured to dissipate heat generated from the coil assembly and the main board assembly. The heat dissipation assembly may include a heat sink
Implementation Method 2
The fan may be arranged on the second side. The fan may be defined with a third air port and a fourth air port. The first air port, the second air port, the third air port and the fourth air port are in communication with one another to form a heat-dissipation air passage on the second side of the heat sink
Data Source
AI summary
A wireless charging device includes a shell, a coil assembly, a main board assembly and a heat dissipation assembly. The shell is defined with first and second air ports, the coil assembly and the main board assembly are located in the shell, the heat dissipation assembly is used for dissipating heat of the coil assembly and the main board assembly. The heat dissipation assembly includes a heat sink and a fan, the heat sink includes a first side and a second side facing away from each other, the coil assembly is arranged on the first side, the fan is arranged on the second side, and the fan is defined with third and fourth air ports. The first air port, the second air port, the third air port and the fourth air port are in communication with one another to form a heat-dissipation air passage located on the second side.