Coil Device Heat Dissipation via Intermediary Phase Change Sheet
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Solution Overview
Problem
Existing wireless power transfer coil devices face inefficiencies in heat dissipation, which can lead to reduced charging efficiency and shorter device lifespan due to inadequate thermal management.
Innovation Solution
The coil device incorporates multiple coils with strategically placed conduction parts and films for heat dissipation, along with thermal conductors and heat dissipation sheets, to effectively manage heat generated during wireless power transfer.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If wireless power transfer is implemented using coils, then power transmission capability is improved, but heat generation increases leading to reduced charging efficiency and shorter device lifespan
Solution Approach 1:
A heat dissipation sheet is introduced as an intermediary component between the coils and the device body. This heat dissipation sheet includes a phase change layer that absorbs heat generated during wireless power transfer through phase change (melting), thereby reducing heat accumulation and improving charging efficiency without affecting power transmission capability
Solution Approach 2:
The heat dissipation sheet utilizes phase change material that transitions from solid to liquid state when absorbing heat. This phase transition process absorbs large amounts of heat energy, effectively managing thermal issues during wireless power transfer and maintaining stable charging efficiency
2Power
If wireless power transfer is implemented using coils, then power transmission capability is improved, but heat generation increases leading to shorter device lifespan
Solution Approach 1:
The heat dissipation sheet acts as a protective intermediary that absorbs and dissipates heat away from critical device components. By placing this heat-absorbing layer between the heat-generating coils and the device body, thermal damage is prevented, thereby extending device lifespan while maintaining power transmission function
Solution Approach 2:
The harmful heat generated during wireless power transfer is converted into a beneficial cooling effect through the phase change material. The heat that would otherwise damage components is instead absorbed and utilized for phase change, protecting the device and extending its operational life
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 configuration enhances heat dissipation performance, improves charging efficiency, and extends the lifespan of wireless power transfer devices by efficiently managing thermal issues.
Implementation Method 1
The first conduction part is disposed between the inner boundary line of the first coil and an outer boundary line of the second coil to dissipate heat
Implementation Method 2
The second conduction part may be disposed between the third coil and the fourth coil to dissipate heat
Implementation Method 3
The magnetic sheet may have an upper surface bonded to lower surfaces of the first coil, the second coil, and the first conduction part. The heat dissipation sheet may be disposed on the lower surface of the magnetic sheet to dissipate heat
Data Source
AI summary
A coil device comprises a first coil, a second coil, a first conductor, and a first film. The second coil is disposed inside an inner boundary line of the first coil. The first conductor is disposed between the inner boundary line of the first coil and an outer boundary line of the second coil to dissipate heat. The first film is disposed on upper surfaces of the first coil, the second coil, and the first conductor.