Telescopic Charging Cable Sheath for Clean EV Cable Handling

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Solution Overview

Problem

Charging cables for electric vehicles are exposed to environmental elements like snow and rain, leading to dirtiness and lack of protection against damage when stored in vehicles, with existing solutions not adequately addressing these issues.

Innovation Solution

A protective device with a deformable support frame and jacket, featuring an extendable telescopic guide rod and fastening mechanism, encases the charging cable to protect it from environmental influences and damage, allowing for easy deployment and stowage.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Object-affected harmful factors

If the charging cable is stored inside the vehicle when dirty, then the vehicle interior is protected from contamination, but the charging cable remains exposed to damage and cannot be properly cleaned

Engineering Contradiction:
Improvecontamination of vehicle interiorVSAvoidprotection against damage to charging cable
Core Design Contradiction:
Object-affected harmful factorsVSReliability

Solution Approach 1:

The protective device separates the charging cable protection function from the vehicle interior, creating a dedicated protective sheath that can be applied to the cable externally. This segmentation allows the cable to be protected outside the vehicle while keeping the vehicle interior clean.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The protective sheath acts as an intermediary between the charging cable and the external environment. It provides a barrier that protects the cable from damage and contamination during charging operations, while allowing the cable to be stored externally rather than inside the vehicle.

Inventive Principle:
Principle #24Intermediary (Mediator)

2Device complexity

If a fixed-length protective cover is used, then the structure is simple, but it cannot accommodate charging cables of varying lengths

Engineering Contradiction:
Improvestructure of protective deviceVSAvoidcompatibility with varying cable lengths
Core Design Contradiction:
Device complexityVSAdaptability or versatility

Solution Approach 1:

The protective device uses a telescopic guide rod mechanism that allows the sheath to dynamically adjust its length. The guide rod can extend and retract, enabling the protective device to accommodate charging cables of different lengths while maintaining a compact form when not in use.

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The telescopic guide rod employs a nested structure where segments of the rod are housed within each other. When retracted, the guide rod occupies minimal space; when extended, it provides the necessary length to match the charging cable, achieving versatility without excessive complexity.

Inventive Principle:
Principle #7Nested doll (Nesting)

3Device complexity

If the protective device is manually deployed and stowed, then the mechanism is simple, but it requires user intervention and time for deployment

Engineering Contradiction:
Improvedeployment mechanismVSAvoidtime for deployment and stowage
Core Design Contradiction:
Device complexityVSLoss of time

Solution Approach 1:

The protective device incorporates an electric drive mechanism that automatically extends the guide rod and deploys the sheath when activated. This self-service capability reduces the need for manual manipulation and accelerates the deployment process, while the compact retracted state facilitates easy storage.

Inventive Principle:
Principle #25Self-service

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 protective device effectively shields the charging cable from contamination and damage during charging, keeping the cable clean and secure, while its adaptable design ensures compatibility with varying cable lengths and easy handling.

Implementation Method 1

The protective device has an electric and/or hydraulic drive and an extendable, telescopic guide rod, wherein the drive is arranged at a first end of the support frame, wherein a first end of the guide rod is arranged on the drive, wherein a second end of the guide rod is arranged at a second end of the support frame, wherein the guide rod and thus the protective device is lengthened or shortened and thus changed as required with the electric and/or hydraulic drive.

Methodology Applied
Scientific EffectTelescopic mechanism:

Implementation Method 2

The protective device has an electric and/or hydraulic drive and an extendable, telescopic guide rod

Methodology Applied
Scientific EffectElectric drive:

Implementation Method 3

The protective device has an electric and/or hydraulic drive and an extendable, telescopic guide rod

Methodology Applied
Scientific EffectHydraulic drive: Hydraulic Press

Implementation Method 4

The protective device has a support frame and a sheath which are designed to sheath, for example to enclose, a hollow space for the charging cable in a longitudinal direction in a tubular manner

Methodology Applied
Scientific EffectPhysical containment: Physical Containment

Data Source

PatentEP3670245B1Protection device for a charging cable
Publication Date: 2024.07.24 AUDI AG
  • EP3670245B1 patent drawingFigure 1~2
  • EP3670245B1 patent drawingFigure 3a~3b

AI summary

The invention relates to a protective device for an electric charging cable (8) for connecting two devices during a charging process, wherein the protective device (14) has a support frame (16) and a sheath (18) which are designed to enclose a cavity extending in a longitudinal direction through which a charging cable (8) can be guided, wherein the support frame (16) and the sheath (18) are deformable in the longitudinal direction, wherein a length of the protective device (14) can be changed and adapted to a length of the charging cable (8) to be guided through the cavity between the two devices.