Double Floor Wireless Power System for Heat and Magnetic Trade-offs
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Solution Overview
Problem
Existing systems for contactless energy transmission to handsets are not easily producible and require complex rearrangement of components, with inefficiencies in heat dissipation and magnetic field penetration.
Innovation Solution
A double floor system with a metal first base plate, featuring a receiving ring, ribs, and a frame on the underside, allows for easy relocation of the primary part and efficient heat dissipation, while using a non-magnetic upper part for unhindered magnetic field penetration and magnetic shielding, integrated with a feed device and adjustable supports for precise alignment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a primary part is arranged in a false floor with a double floor structure, then the system allows easy relocation of the primary part by running supply cables in the double floor, but the structural complexity and manufacturing complexity increase due to the need for floor panels, supporting elements, and adjustable supports
Solution Approach 1:
The false floor is divided into multiple floor panels that can be independently assembled and disassembled. The supporting elements are segmented into adjustable support parts that can be independently configured. This segmentation enables easy relocation of the primary part by simply removing and repositioning floor panels without requiring complex structural modifications.
Solution Approach 2:
The supports are designed with variable length capability through screw-connected support parts, allowing dynamic adjustment to compensate for unevenness in the unfinished floor. This dynamic adaptability simplifies installation and relocation processes, as the supporting structure can be easily reconfigured for different positions and floor conditions.
2Temperature
If the first base plate is made of metal, particularly aluminum, then heat dissipation is improved, but the magnetic field penetration is hindered due to magnetic shielding effects
Solution Approach 1:
The base plate is constructed with heterogeneous materials having different local properties: the first base plate is made of thermally conductive metal (aluminum) for heat dissipation, while the second base plate is made of non-magnetic material (plastic or wood) for magnetic field penetration. This local differentiation of material properties allows simultaneous optimization of both heat dissipation and magnetic field transmission without compromise.
Solution Approach 2:
The floor structure employs composite construction with metal first base plate for thermal management and non-magnetic second base plate for electromagnetic transparency. This composite approach combines the advantageous properties of different materials (thermal conductivity of metal, magnetic transparency of non-magnetic materials) to resolve the contradiction between heat dissipation and magnetic field penetration.
3Strength
If the first base plate is made thicker to increase load-bearing capacity, then the structural strength is improved, but the material usage and manufacturing complexity increase
Solution Approach 1:
The first base plate incorporates a receiving ring with curved, annular geometry that provides structural reinforcement and load distribution. This curved structure achieves high load-bearing capacity with less material compared to a uniformly thick plate, as the环形 shape naturally resists bending and distributes stresses more efficiently.
Solution Approach 2:
The floor structure uses composite construction with metal first base plate providing structural strength and non-magnetic second base plate providing surface functionality. This composite approach allows the metal layer to be thinner than a solid metal plate would require, as the combined structure achieves the necessary load-bearing capacity while using less total material.
4Manufacturing precision
If adjustable supports with variable length are used to compensate for unevenness, then the alignment precision is improved, but the device complexity and manufacturing cost increase
Solution Approach 1:
The supports are designed with variable length capability through screw-connected support parts that can be independently adjusted. This dynamic adjustability allows simple compensation for floor unevenness by turning adjustment screws, achieving precise alignment without requiring complex mechanical mechanisms or electronic control systems.
Solution Approach 2:
The adjustable supports enable self-leveling of the floor structure by allowing manual adjustment of support lengths to compensate for unevenness in the unfinished floor. This self-service capability achieves precise alignment through simple mechanical adjustment rather than requiring complex external leveling 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
Enables easy production and rearrangement of the energy transmission system with enhanced load-bearing capacity, efficient heat dissipation, and effective magnetic field induction, ensuring reliable and efficient contactless energy transfer to handsets.
Implementation Method 1
supply electrical energy to an energy store of a mobile part from a stationary primary winding via an inductive coupling
Implementation Method 2
the first base plate is made of aluminum. The advantage here is that good spreading of the heat flow generated by the primary part can be achieved. Good dissipation of the heat to the environment, in particular also via the supports and/or supporting elements, can thus be guaranteed.
Implementation Method 3
the upper part can be made of plastic and thus the magnetic field generated by the primary winding can be passed through unhindered
Data Source
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AI summary
The invention relates to a system for the non-contact transmission of electrical energy to a mobile part, said system having a double bottom in which a primary part is arranged.