Inductive Receiving Device Housing with Membrane Pressure Equalization
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Solution Overview
Problem
Existing receiving devices for inductive power transmission to vehicles face challenges in maintaining reliable operation across a wide temperature range while preventing the ingress of dirt and water, which can affect the performance of electrical and electronic components.
Innovation Solution
A receiving device with a housing comprising a cover part and a base part, featuring a tongue and groove connection and a sealing element, which provides a secure enclosure for the winding structure and additional components, and includes membrane elements for pressure equalization and vapor management to ensure reliable sealing and operation across varying temperatures.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If a housing enclosure is provided for the winding structure and electronic components, then protection from dirt and water ingress is improved, but device complexity increases due to the need for sealing mechanisms
Solution Approach 1:
A membrane element is integrated into the housing enclosure to provide flexible sealing. The membrane allows pressure equalization between the interior and exterior of the housing while maintaining protection against dirt and water ingress. This flexible film approach simplifies the sealing structure compared to rigid sealing mechanisms.
Solution Approach 2:
The membrane element acts as an intermediary between the interior and exterior environments of the housing. It mediates pressure differences while maintaining the protective barrier, allowing vapor escape but preventing direct ingress of dirt and water. This intermediary component resolves the contradiction by providing both protection and pressure balance.
2Reliability
If the housing is hermetically sealed to prevent dirt and water ingress, then reliability is improved, but pressure equalization and vapor management become problematic under temperature variations
Solution Approach 1:
The membrane element provides a flexible sealing solution that maintains hermetic protection while adapting to pressure changes. Unlike rigid seals, the membrane can deform to equalize pressure between interior and exterior, preventing seal failure under temperature variations while maintaining reliability.
Solution Approach 2:
The membrane element changes its physical state and position in response to pressure variations caused by temperature changes. This parameter change allows the sealing structure to adapt dynamically, maintaining both hermetic protection and pressure equalization across different operating conditions.
3Ease of manufacture
If a tongue and groove connection is used for housing assembly, then manufacturing ease is improved, but sealing effectiveness may be compromised without additional sealing elements
Solution Approach 1:
The tongue and groove connection is merged with the membrane element sealing approach. The tongue and groove provides the structural assembly framework that is easy to manufacture, while the membrane element is integrated into this structure to provide the actual sealing function, combining manufacturing ease with sealing effectiveness.
Solution Approach 2:
The housing assembly combines different material properties: the rigid tongue and groove structure provides mechanical strength and ease of assembly, while the flexible membrane element provides sealing functionality. This composite approach integrates structural and sealing functions in a unified design.
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 ensures reliable operation of the receiving device by effectively sealing the interior volume from moisture and dirt, while allowing vapor escape and managing pressure changes, thus maintaining performance even under extreme temperature conditions.
Implementation Method 1
The receiving device comprises at least one coil of an electrical conductor, in particular a copper conductor, which is configured to receive the electromagnetic field and to generate an electrical voltage by electromagnetic induction
Implementation Method 2
at least one membrane element, in particular a vapor-permeable membrane element, is arranged between the inner volume and the outer volume
Implementation Method 3
at least one sealing element is arranged in the groove, wherein the cover part is connected to the base part in such a way that at least one section of the web is arranged in the groove and encloses the at least one sealing element
Data Source
Figure 1
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Figure 4
AI summary
The invention relates to a receiving device for a system for inductive power transmission, wherein the receiving device (1) comprises a housing, the housing comprises a cover part (2) and a base part (3) as housing parts, and the housing has an internal volume for receiving at least one winding structure (12), characterized in that one of the housing parts has at least one rib (16) and the other housing part has at least one groove (15) for receiving the at least one rib (16). The at least one rib (16) and the at least one groove (15) are arranged between the internal volume and an external volume, the receiving device (1) comprises at least one sealing element (38), and at least one portion of the at least one rib (16) and at least one portion of the at least one sealing element (38) are arranged in at least one portion of the at least one groove (38). The invention further relates to a method for production.