Capacitor Anchoring in Wireless Power Receivers
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Solution Overview
Problem
Non-contact electric power transmission devices lack an anchor member to stabilize the capacitor, leading to potential misalignment and reduced efficiency due to external forces or inclination.
Innovation Solution
Incorporating an anchor member to securely position the capacitor at a defined distance from the shield within a housing case, ensuring the capacitor and shield are spaced apart to maintain insulation and prevent discharging, even under external forces or inclination.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If the capacitor is arranged close to the shield to reduce device size, then the device complexity is reduced, but the insulation distance is compromised leading to potential discharging
Solution Approach 1:
An insulative support structure is introduced as an intermediary element between the capacitor and the shield. This support structure maintains the required insulation distance while enabling compact device design, effectively mediating between the conflicting requirements of small size and sufficient insulation clearance.
Solution Approach 2:
The capacitor positioning is achieved by utilizing the third dimension (vertical spacing) rather than merely expanding the horizontal footprint. The insulative support structure elevates or positions the capacitor at a specific height above the shield, allowing compact planar dimensions while maintaining adequate insulation distance in the vertical dimension.
2Stability of the object's composition
If the capacitor is anchored to maintain position, then the stability is improved, but the device complexity increases due to additional anchor member
Solution Approach 1:
The insulative support structure serves multiple functions simultaneously: it provides mechanical support to maintain capacitor positioning, ensures electrical insulation between the capacitor and shield, and contributes to the overall structural integrity of the device. This multi-functionality reduces the need for separate dedicated components.
Solution Approach 2:
The support and insulation functions are merged into a single integrated insulative support structure rather than using separate support elements and insulation layers. This consolidation simplifies the overall device structure while achieving both positioning stability and electrical insulation requirements.
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 anchors the capacitor, maintaining the required distance from the shield and enhancing the stability and efficiency of the power transmission process by suppressing current flow and ensuring consistent insulation, thereby improving the overall electric power transmission efficiency.
Implementation Method 1
receiving electric power in a non-contact manner from an externally provided power transmission unit
Implementation Method 2
a first shield defining a region where an electromagnetic field developed around the power reception unit is emitted
Data Source
Figure 1~2
Figure 3~4
Figure 5
AI summary
A power reception device includes a power reception unit (27) having a first capacitor (19), receiving electric power in a non-contact manner from an externally provided power transmission unit (28), a first housing case (50) housing the power reception unit (27) inside, and a first anchor member (52) anchoring the first capacitor (19). The first housing case (50) includes a first shield (53) defining a region where an electromagnetic field developed around the power reception unit (27) is emitted. The first capacitor (19) is anchored by the first anchor member (52) at a position spaced apart from the first shield (53).