Inductive Charging Ferrite Plate Assembly for Thin Durable Protection
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Solution Overview
Problem
Inductive charging arrangements for motor vehicles face challenges such as weight loads, temperature fluctuations, contamination, and water ingress, requiring a solution that enhances durability and installation efficiency while maintaining a reasonable thickness.
Innovation Solution
The arrangement includes a ferrite plate between two cover elements, with the ferrite plate constructed in segments and covered by elastic rubber cover elements made of butyl rubber, which provide protection, mobility, and adhesion, along with a load distribution plate and a carrier to manage weight and temperature variations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the ferrite plate arrangement is made robust to withstand weight loads and environmental stresses, then durability and protection are improved, but the overall thickness increases
Solution Approach 1:
The ferrite plate arrangement is divided into multiple segments that can move relative to one another, allowing the structure to accommodate stresses without requiring excessive thickness for rigidity. The segmented design maintains structural integrity while reducing overall thickness.
Solution Approach 2:
Elastic cover elements made of rubber or rubber-like material are used to enclose and protect the ferrite plate segments. These flexible cover elements provide protection against weight loads, temperature fluctuations, contamination, and water ingress while maintaining a compact thickness profile.
2Reliability
If the ferrite plate arrangement is protected from breakage and environmental factors, then reliability is improved, but device complexity increases
Solution Approach 1:
The ferrite plate arrangement is enclosed by elastic cover elements that provide comprehensive protection against environmental factors and mechanical stresses. This encapsulation approach simplifies the overall structure by using a single protective mechanism rather than multiple separate protective components.
Solution Approach 2:
The cover elements are designed to be elastic and allow the ferrite plate segments to move relative to one another in response to environmental stresses. This dynamic design enables the structure to adapt to weight loads and temperature changes without requiring complex rigid protective mechanisms.
3Adaptability or versatility
If the ferrite plate arrangement allows for thermal expansion and contraction, then adaptability to temperature fluctuations is improved, but manufacturing precision becomes more difficult
Solution Approach 1:
The ferrite plate segments are designed to move relative to one another within the elastic cover elements, allowing for thermal expansion and contraction without compromising structural integrity. This dynamic design accommodates temperature fluctuations while maintaining acceptable manufacturing tolerances.
Solution Approach 2:
The elastic cover elements provide a flexible enclosure that accommodates dimensional changes in the ferrite plate segments due to thermal effects. This flexibility compensates for manufacturing variations and allows the structure to adapt to temperature changes without requiring extremely tight manufacturing precision.
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
This design enhances the durability and protection of the ferrite plate, allows for efficient installation, and maintains a low overall thickness, effectively addressing the challenges of weight, temperature, and environmental exposure.
Implementation Method 1
A first coil unit 2, which can be integrated, for example, on a floor or in a floor, is known from the prior art. A further coil device is arranged in the vehicle to be charged. The vehicle is positioned opposite this coil device, and charging can then take place contactlessly and inductively.
Data Source
Figure 1~3
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Figure 7~9
AI summary
Inductive charging arrangement (1), in particular for inductive charging of motor vehicles, comprising a coil assembly (2) and a ferrite plate assembly (4) arranged adjacent to the coil assembly (2). According to the invention, a first cover element (12) covering the ferrite plate assembly (4) is arranged on a first surface (4a) of the ferrite plate assembly (4), and a second cover element (14) covering the ferrite plate assembly (4) is arranged on a second surface (4b) of the ferrite plate assembly (4), which is opposite the first surface of the ferrite plate assembly (4), wherein preferably the ferrite plate assembly (4) is arranged between the first cover element (12) and the second cover element (14), with at least one cover element extending between the ferrite plate assembly (4) and the coil assembly (2).