Sheet Metal Thermal Conductor for Inductive Charging
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Solution Overview
Problem
Existing systems for contactless transmission of electrical energy to handsets lack compactness and efficient heat dissipation, which are crucial for high-performance and cost-effective designs.
Innovation Solution
A compact system with a drilled hole in a floor material, featuring a frame part and a receiving part with a sheet metal part in between, where the sheet metal part enhances heat dissipation by conducting heat from the electronic circuit to the frame part, which is connected to the concrete floor for effective thermal conductivity, and uses corrugated sheet metal for radial heat distribution.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If a compact charging unit is designed for inductive transmission, then the device size is reduced, but heat dissipation becomes insufficient
Solution Approach 1:
A sheet metal part is introduced as a thermal intermediary between the receiving part (electronic circuit) and the frame part. This mediator conducts heat away from the compact charging unit components, solving the heat dissipation problem in the reduced-size design.
Solution Approach 2:
The concrete floor material is utilized as a natural heat sink due to its inherent high thermal conductivity. The system leverages the existing thermal properties of the installation substrate to dissipate heat without requiring additional active cooling mechanisms.
2Reliability
If the receiving part is made of plastic for electrical insulation, then electrical safety is improved, but heat dissipation capability deteriorates
Solution Approach 1:
The housing is divided into functionally distinct parts: the receiving part made of plastic for electrical insulation and the frame part for structural support and heat dissipation. The sheet metal part bridges these segments, providing thermal conduction path while maintaining electrical insulation where needed.
Solution Approach 2:
The sheet metal part serves as a thermal mediator that extracts heat from the plastic receiving part and transfers it to the frame part, enabling heat dissipation while preserving the electrical insulation benefits of the plastic material.
3Temperature
If conventional heat dissipation methods are used, then manufacturing complexity increases, but production cost increases
Solution Approach 1:
The sheet metal part is designed as a simple, inexpensive component that can be easily manufactured and installed. Rather than using complex or expensive cooling systems, a basic metal thermal conductor provides effective heat dissipation at low cost.
Solution Approach 2:
The solution changes the approach to heat dissipation by utilizing the high thermal conductivity parameter of concrete and metal materials rather than relying on complex cooling systems. This parameter-based solution simplifies manufacturing and reduces costs.
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 system achieves improved heat dissipation and cost-effective production while ensuring electrical insulation and efficient energy transmission, allowing for the use of high-voltage electronics with effective thermal management.
Implementation Method 1
the heat is now conducted from the receiving part for the electronic circuit to the frame part through the sheet metal part
Implementation Method 2
a primary winding is arranged in the cover part, which can be inductively coupled to a secondary winding arranged on the underside of the mobile part
Implementation Method 3
The frame part is connected directly to the concrete material. Since concrete material is a good conductor of heat, effective heat dissipation is guaranteed.
Data Source
Figure 1
Figure 2
AI summary
The invention relates to a system for the non-contact transmission of electrical energy to a mobile part, in which said system comprises a borehole made in a bottom material, a frame part is received in the borehole, a receiving part is arranged in the frame part, an electronic circuit is arranged in the receiving part, the receiving part is at last partially covered by a covering part so as to form a housing, particularly on one of the sides thereof, a sheet metal part is arranged between the receiving part and the frame part, the sheet metal part touches the receiving part, and the sheet metal part touches the frame part.