Inductive Receiving Device Magnetic Shielding
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Solution Overview
Problem
Existing receiving devices for inductive power transfer in vehicles face challenges in integrating electric and electronic elements in a space-saving manner while ensuring operational reliability, as the electromagnetic field for power transfer can interfere with these components, leading to undesired operational behavior.
Innovation Solution
A receiving device with a housing that includes magnetic shielding elements to protect the circuit boards and electronic components from the electromagnetic field, featuring a design with reception areas for circuit boards, magnetic shielding plates, and thermal connecting elements to reduce interference and enhance electromagnetic compatibility, allowing for efficient power transfer and reliable operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If the receiving device integrates electric and electronic components in a compact arrangement, then space requirements are reduced, but electromagnetic interference with these components increases
Solution Approach 1:
Magnetic shielding elements are introduced as intermediary components between the electromagnetic field source and the electronic components. These shielding elements deflect or absorb electromagnetic radiation, creating a protective barrier that allows compact integration while preventing interference with sensitive electronics
2Reliability
If magnetic shielding elements are added to protect electronic components, then electromagnetic compatibility is improved, but device complexity increases
Solution Approach 1:
The magnetic shielding elements serve multiple functions simultaneously: they provide electromagnetic protection for electronic components, structurally support the housing assembly, and can be integrated with existing mounting structures. This multi-functionality reduces the need for additional separate components, thereby limiting the increase in overall device complexity
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 proposed solution effectively shields electronic components from electromagnetic interference, ensuring reliable operation and efficient power transfer while minimizing space requirements and weight, thus addressing the integration challenges of existing devices.
Implementation Method 1
the receiving device comprises at least one coil (12) of an electric line, wherein the magnetic field induces an electric voltage in the coil (12) during operation and wherein the coil (12) comprises an inductance
Implementation Method 2
The receiving device (1) comprises at least one magnetic shielding element (13a, 13b), wherein the at least one magnetic shielding element (13a, 13b) shields the at least one circuit board (10a, 10b) from the electromagnetic field
Data Source
AI summary
A receiving device of a system for inductive power transfer includes a housing, which includes a cover element and a base element, at least one reception area for a circuit board, at least one magnetic shielding element, wherein the at least one magnetic shielding element covers the at least one reception area of the cover element at least partially, and a winding structure, the magnetic shielding element is arranged below the winding structure with respect to a vertical axis of the receiving device and the vertical axis of the receiving device is oriented orthogonal to an upper surface of the cover element and a bottom surface of the base element.