Modular Current Conversion System for Flexible Electrochemical Coating

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Solution Overview

Problem

Existing coating facilities lack flexibility and reliability in operating and maintaining efficient electrochemical coating processes, particularly in adapting to varying workpiece geometries and compensating for irregularities in current conversion units.

Innovation Solution

A coating facility with a current conversion system comprising a power switch and an isolating transformer, allowing for adjustable and galvanically isolated coating currents, utilizing multiple current conversion units and modular electrode configurations to ensure flexible and reliable operation, with a control device for independent regulation of each unit to optimize current distribution.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If a simple power supply system is used, then the device complexity is reduced, but the flexibility and reliability for adapting to varying workpiece geometries is compromised

Engineering Contradiction:
Improveadaptability to varying workpiece geometriesVSAvoidcomplexity of current conversion system
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The current conversion system is divided into multiple independent current conversion units, each capable of independently converting power supply current to coating current. This segmentation allows flexible adaptation to different workpiece geometries by activating only the necessary units while maintaining manageable complexity through modular architecture.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The system employs dynamic control of multiple current conversion units through a control device that can independently regulate each unit based on the specific coating requirements and workpiece geometry. This dynamic activation and regulation provides versatility without requiring all units to be permanently complex.

Inventive Principle:
Principle #15Dynamics

2Reliability

If multiple current conversion units are used, then the reliability and flexibility are improved, but the device complexity increases

Engineering Contradiction:
Improvereliability of coating operationVSAvoidcomplexity of current conversion system
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The system is segmented into multiple identical or different current conversion units that can operate independently. This segmentation improves reliability through redundancy and load distribution while managing complexity through standardized modular units that can be selectively activated.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

When a current conversion unit fails or becomes unnecessary, the system can discard its operation by deactivating it through the control device, while the remaining units continue to function. This approach maintains reliability through fault tolerance without requiring complex recovery mechanisms for each individual unit.

Inventive Principle:
Principle #34Discarding and recovering

3Loss of energy

If direct current conversion is used, then the energy efficiency is improved, but the harmonic distortion and energy loss increase

Engineering Contradiction:
Improveenergy loss in current conversionVSAvoidharmonic distortion
Core Design Contradiction:
Loss of energyVSObject-generated harmful factors

Solution Approach 1:

The current conversion units transform the power supply current parameters (frequency, voltage, phase) into suitable coating current parameters through controlled rectification and smoothing. By optimizing these parameter transformations, the system achieves efficient direct current conversion while minimizing harmonic distortion and energy losses through proper filtering and regulation.

Inventive Principle:
Principle #35Parameter changes

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

Enables flexible and reliable coating operations by allowing adjustable current strength, efficient energy use, reduced harmonic distortion, and improved coating quality through uniform current distribution and reduced wear on electrodes, while accommodating non-symmetrical workpieces and compensating for unit failures.

Implementation Method 1

an isolating transformer, the power switch being connectable on the input side to a supply current source and being connected on the output side to the isolating transformer, and the isolating transformer being connected on the input side to the power switch and on the output side to an electrode

Methodology Applied
Scientific EffectElectromagnetic induction: Electromagnetic Induction

Implementation Method 2

a current conversion unit, which comprises a power switch and an isolating transformer, the power switch being connectable on the input side to a supply current source

Methodology Applied
Scientific EffectRectification: Diode

Data Source

PatentUS9988729B2Coating facility and method for coating workpieces
Publication Date: 2018.06.05 DUERR SYST AG
  • US9988729B2 patent drawing
  • US9988729B2 patent drawing
  • US9988729B2 patent drawing

AI summary

In order to provide a coating facility for coating workpieces, which includes a dip tank, into which the workpieces are introducible in order to coat them, a current conversion system for providing a coating current, which is feedable through the dip tank to coat the workpieces, and an electrode, which is configured to be arranged in the dip tank and which is electrically connected to the current conversion system, which coating facility is configured to be flexibly and reliably operated, it is proposed that the current conversion system comprises a current conversion unit, which includes a power switch and an isolating transformer, the power switch being connectable on the input side to a supply current source and being connected on the output side to the isolating transformer and the isolating transformer being connected on the input side to the power switch and on the output side to an electrode.