Protected Guide Rail Charging Flap Module for EV Port Access

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Solution Overview

Problem

Existing charging flap modules in electric vehicles are prone to dirt and water penetration, leading to jamming and inaccessibility of the charging plug, and lack effective protection against environmental conditions.

Innovation Solution

Integration of a guide rail within the charging flap module, protected from dirt and water, along with a sealant and drain elements, ensures reliable operation and protection against environmental factors, while optimizing kinematics and reducing component count through injection molding and weight optimization.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If the guide rail is arranged externally on the charging flap module, then the structure is simpler and easier to manufacture, but the guide rail is exposed to dirt and water causing jamming and reliability issues

Engineering Contradiction:
Improvecharging flap operation reliabilityVSAvoidguide rail arrangement complexity
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The guide rail is integrated into the housing of the charging flap module, with the housing serving as a protective enclosure. The guide rail is positioned within the housing structure, nested inside the protective shell, which shields it from environmental contaminants while maintaining its guiding function for the charging flap.

Inventive Principle:
Principle #7Nested doll (Nesting)

Solution Approach 2:

The housing acts as an intermediary protective element between the guide rail and the external environment. It provides a barrier against dirt and water, preventing direct contact with the guide rail while still allowing the charging flap to move along the guide rail within the protected interior space.

Inventive Principle:
Principle #24Intermediary (Mediator)

2Object-affected harmful factors

If the guide rail is integrated into the housing of the charging flap module, then protection against dirt and water is achieved, but manufacturing complexity increases

Engineering Contradiction:
Improveprotection against dirt and waterVSAvoidmanufacturing ease
Core Design Contradiction:
Object-affected harmful factorsVSEase of manufacture

Solution Approach 1:

The guide rail and housing are merged into a single integrated structure. The guide rail is formed as an integral part of the housing, eliminating the need for separate assembly steps and reducing the number of components. This integration simplifies the manufacturing process while maintaining the protective function against environmental factors.

Inventive Principle:
Principle #5Merging (Combining)

3Object-affected harmful factors

If the charging flap module uses multiple separate components for guide rail and housing, then manufacturing and assembly are easier, but protection against environmental factors is reduced

Engineering Contradiction:
Improveprotection against penetrating dirt and waterVSAvoidcomponent count
Core Design Contradiction:
Object-affected harmful factorsVSDevice complexity

Solution Approach 1:

The guide rail and housing are combined into a single integrated component structure. This merging reduces the number of separate parts that need to be assembled and sealed, thereby improving protection against dirt and water penetration while simplifying the overall component count and assembly process.

Inventive Principle:
Principle #5Merging (Combining)

Data Source

PatentUS12525737B2Electric vehicle having a charging flap module
Publication Date: 2026.01.13 DR ING H C F PORSCHE AG
  • US12525737B2 patent drawing
  • US12525737B2 patent drawing
  • US12525737B2 patent drawing

AI summary

An electric vehicle has a charging flap module. The electric vehicle includes a body having a body interior, which has a body element having an outer skin. The body element has an element opening, in which a charging cradle of the charging flap module is arranged. The charging cradle is designed to be fixed to the body and to incorporate a charging flap. The charging flap is designed to be movable in a guided manner between an open position and a closed position for opening and closing a cradle opening of the charging cradle. For guiding the charging flap, the charging cradle includes at least one guide rail, which is arranged in the charging flap module integrated into the housing so that it is protected against penetrating dirt and/or water.