Segment Contact Surface Testing for Continuous Cell Stack Inspection

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Solution Overview

Problem

Existing testing devices for energy cell segments, such as battery cells, are limited by discontinuous movements and potential damage to segments during contact, which affects the accuracy and efficiency of testing.

Innovation Solution

A testing device with a conveying apparatus having movable receiving portions with multiple contact surfaces, connected via a switching matrix to measuring devices, allowing for continuous transportation and testing of segments without removing them from the device.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If segments are tested by actively contacting conductor lugs during production, then testing can be performed during transportation, but the machine performance is limited due to discontinuous movements and segments can be damaged

Engineering Contradiction:

Improvetesting speedVSAvoidsegment integrity

Core Design Contradiction:

ProductivityVSReliability

Solution Approach 1:

The patent replaces active mechanical contact with conductor lugs by using passive contact surfaces that the segment naturally touches during transportation. The measuring device detects electrical properties through these passive contact surfaces without requiring mechanical manipulation of the segment, thereby eliminating damage risks while maintaining continuous testing capability

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

Instead of the testing device actively contacting the segment's conductor lugs, the invention inverts the approach by having the segment passively contact fixed contact surfaces during its natural transportation motion. This reversal eliminates the need for discontinuous movements and active manipulation, allowing continuous testing without segment damage

Inventive Principle:

Principle #13The other way round (Inversion)

2Measurement precision

If receiving portions have multiple contact surfaces for comprehensive measurement, then separator and electrode testing accuracy improves, but device complexity increases due to switching matrix requirements

Engineering Contradiction:

Improveseparator measurement accuracyVSAvoidswitching matrix complexity

Core Design Contradiction:

Measurement precisionVSDevice complexity

Solution Approach 1:

The patent divides the measurement function into multiple independent contact surfaces (first, second, and third contact surfaces) that can be independently connected to measuring devices. The switching matrix segments the electrical connections, allowing different combinations of contact surfaces to be activated for different measurement types (separator resistance, electrode contact, etc.), thereby achieving comprehensive measurement while maintaining manageable system complexity

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The switching matrix provides universal connectivity by enabling any combination of contact surfaces to be connected to any measuring device. This multi-functional switching capability allows the same hardware configuration to perform multiple different measurements (separator integrity, electrode contact quality, insulation resistance) without requiring separate dedicated circuits for each measurement type

Inventive Principle:

Principle #6Universality (Multi-functionality)

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 enables gentle and efficient testing of energy cell segments during transportation, allowing for comprehensive measurement of separators and electrodes, thereby improving the accuracy of segment quality assessment and reducing production downtime.

Implementation Method 1

wherein the receiving portions each comprise at least two contact surfaces for contacting, electrically and/or by signal, a segment received in the corresponding receiving portion

Methodology Applied

Scientific EffectElectrical conduction: Conduction (electrical)

Data Source

PatentUS20250132407A1Test device and method for testing segments for the energy cell-producing industry

Publication Date: 2025.04.24 KORBER TECHNOLOGIES GMBH

AI summary

Testing device for testing segments that are suitable for forming a cell stack for the energy cell producing industry, wherein:a conveying apparatus with a plurality of receiving portions is provided for receiving and transporting a segment in each case, whereinthe receiving portions are movable relative to a stationary part of the testing device by a movement of the conveying apparatus, characterized in thatthe receiving portions each comprise at least two contact surfaces for contacting, electrically and/or by signal, a segment received in the respective receiving portion, whereinat least two of the contact surfaces of one of the receiving portions can be connected to at least one measuring device by means of a switching matrix.