3D-Printed Electrolyser Plate Assembly for Embedded Temperature Sensing

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Solution Overview

Problem

Existing electrochemical systems face challenges in achieving high measurement accuracy for temperature while requiring minimal space, particularly in stacked electrochemical cells like electrolysis cells.

Innovation Solution

A plate arrangement with 3D-printed elements featuring layers with varying perforation fineness, incorporating a temperature sensor through multiple layers via a narrow mounting channel, allowing sensitive temperature detection with minimal space usage.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Measurement precision

If a temperature sensor is installed in a stacked electrochemical system, then temperature measurement capability is improved, but device complexity and space requirements increase

Engineering Contradiction:
Improvetemperature measurement accuracyVSAvoidinstallation complexity
Core Design Contradiction:
Measurement precisionVSDevice complexity

Solution Approach 1:

The temperature sensor is integrated directly into the plate element structure during additive manufacturing, merging the sensing function with the structural component. This eliminates separate mounting hardware and reduces installation complexity while maintaining measurement accuracy.

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The temperature sensor is nested within the plate element structure, with the sensor body positioned in recesses and connected through channels formed within the plate. This nesting approach minimizes external space requirements and simplifies the overall device architecture.

Inventive Principle:
Principle #7Nested doll (Nesting)

2Measurement precision

If a temperature sensor with cable is installed in the plate arrangement, then temperature monitoring is improved, but the space required for cable routing and sensor mounting increases

Engineering Contradiction:
Improvetemperature sensing capabilityVSAvoidinstallation space
Core Design Contradiction:
Measurement precisionVSVolume of moving object

Solution Approach 1:

The cable is routed through channels formed in the third dimension (through the thickness of the plate) rather than requiring lateral space. This vertical routing approach minimizes the horizontal footprint and overall volume required for sensor installation.

Inventive Principle:
Principle #17Another dimension (Dimensionality change)

Solution Approach 2:

The cable is nested within channels formed in the plate structure, with the cable running through pre-formed pathways that are integrated into the plate's internal geometry. This eliminates the need for external cable management and reduces overall installation volume.

Inventive Principle:
Principle #7Nested doll (Nesting)

3Volume of moving object

If the temperature sensor is placed on coarsely perforated layers, then installation space is reduced, but measurement sensitivity to temperature changes decreases

Engineering Contradiction:
Improvesensor installation spaceVSAvoidtemperature change sensitivity
Core Design Contradiction:
Volume of moving objectVSMeasurement precision

Solution Approach 1:

The plate element has non-uniform perforation distribution with different regions optimized for different functions: coarsely perforated areas for fluid flow and finely perforated areas for temperature sensing. The sensor is specifically positioned in the finely perforated region to maximize temperature sensitivity while the overall plate structure maintains efficient fluid distribution.

Inventive Principle:
Principle #3Local quality

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 provides accurate temperature measurement with minimal space consumption, enhancing sensitivity to temperature changes in electrochemical cells.

Implementation Method 1

a temperature sensor connected to a cable which runs through several of the aforementioned layers borders the layer which has the finest perforations

Methodology Applied
Scientific EffectThermal conduction: Conduction (thermal)

Data Source

PatentEP4647534A1Plate assembly, electrolyser and method for producing a plate assembly
Publication Date: 2025.11.12 SCHAEFFLER TECHNOLOGIES AG & CO KG
  • EP4647534A1 patent drawingFigure 1
  • EP4647534A1 patent drawingFigure 2~4
  • EP4647534A1 patent drawingFigure 5~7

AI summary

A plate arrangement (1) of a stack of electrochemical cells (2) comprises a plate element (3) designed at least partially as a 3D printed element, in which several layers (6, 7, 8) are arranged parallel to each other, each having perforated structures suitable for the passage of a fluid, wherein the fineness of the perforations (17) varies from layer (6, 7, 8) to layer (6, 7, 8), and wherein a temperature sensor (19) connected to a cable (20) which runs through several of the said layers (6, 7, 8) borders the layer (8) which has the finest perforations (17).