Floating Coil Cooling With Adjustable Coolant Volume
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Solution Overview
Problem
There is a need for more efficient cooling of coil parts and the ability to change coil characteristics in wireless power supply systems to improve power supply efficiency.
Innovation Solution
A coil device with a coil part that floats on a coolant, utilizing a fluid volume adjusting part to supply or discharge coolant, allowing for efficient heat transfer and adjustable coil positioning by changing the coolant volume, thereby cooling and modifying the coil characteristics.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If a fan is used to cool the coil part, then cooling effect is improved, but device complexity increases
Solution Approach 1:
The invention extracts the harmful fan component from the cooling system and replaces it with a passive liquid cooling mechanism. The coil part is immersed in coolant that naturally circulates, eliminating the need for active mechanical cooling components while achieving efficient heat dissipation.
Solution Approach 2:
The mechanical fan-based cooling system is replaced with a fluid-based thermal conduction system. The coolant directly contacts the coil part and transfers heat through thermal conduction, substituting mechanical air movement with fluid thermal transfer for simpler and more efficient cooling.
2Temperature
If coolant volume is increased to improve cooling, then cooling efficiency improves, but coil characteristics change uncontrollably
Solution Approach 1:
The invention introduces a dynamic adjustment mechanism for coolant volume that allows real-time control based on operating conditions. The system can adaptively change coolant levels to maintain optimal cooling while preserving desired coil characteristics, transitioning from static to dynamic control.
Solution Approach 2:
The invention controls coolant volume as a variable parameter rather than a fixed value. By adjusting the coolant level within specific ranges, the system optimizes cooling efficiency while maintaining coil characteristics within acceptable tolerances, demonstrating parameter-based optimization.
3Temperature
If coil part is fixed in position, then structural simplicity is maintained, but cooling efficiency decreases
Solution Approach 1:
The invention uses buoyancy force from the coolant to counteract the weight of the coil part, creating a floating support mechanism. This natural buoyant force positions the coil part optimally for cooling without requiring complex mechanical positioning structures, achieving force-based positioning.
Solution Approach 2:
The coolant serves dual functions: it cools the coil part through thermal contact and simultaneously positions the coil part through buoyancy. The system uses the coolant's own properties to achieve both cooling and positioning, eliminating the need for separate positioning mechanisms.
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 coil device efficiently cools the coil part and changes its characteristics by adjusting the coolant volume, enhancing power supply efficiency and preventing coolant depletion through vaporization and recirculation.
Implementation Method 1
the coil part is heated. The system disclosed in Patent Literature 1 uses a fan to cool the coil part
Implementation Method 2
the coil part floats on the coolant
Data Source
AI summary
A coil device includes a coil part having a coil, a case accommodating the coil part, a coolant accommodated in the case, and a fluid volume adjusting part for supplying the coolant to the case or discharging the coolant from the case. The coil part floats on the coolant.