Conveyed Planar Element Testing for Damage-Free Cell Stack Screening
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Solution Overview
Problem
Existing testing devices for planar elements in energy cell production can damage the elements during the production process and are limited by discontinuous movements, affecting the functionality and service life of the cell stack.
Innovation Solution
A testing device with multiple testing units on a conveying apparatus, each with insulated carriers and contact surfaces for electrical and signal contact, allowing planar elements to be tested without interference while being moved, using a rotatably mounted drum for efficient measurement during conveyance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If test apparatus actively contacts conductor lugs to test planar elements, then testing function is achieved, but planar elements can be damaged and machine performance is limited by discontinuous movements
Solution Approach 1:
The patent replaces the mechanical contact-based testing system with an electrical field-based testing system. Testing units use electrical fields to detect defects in planar elements without physical contact, eliminating mechanical damage to conductor lugs and separator sheets while maintaining effective testing functionality
Solution Approach 2:
The patent introduces an electrical field as an intermediary between the testing apparatus and the planar elements. The electrical field serves as a non-contact mediator that can detect defects without requiring direct mechanical contact with the conductor lugs, thus avoiding damage while achieving testing objectives
2Measurement precision
If multiple contact surfaces are used to test different parts of planar element, then measurement precision is improved, but electrical interference between contact surfaces can occur
Solution Approach 1:
The patent uses electrical fields as intermediaries between multiple testing units and the planar elements. Each testing unit generates its own electrical field that interacts with the planar element independently, allowing multiple simultaneous measurement points without direct electrical connection between testing units, thus eliminating electrical interference while maintaining high measurement precision
Solution Approach 2:
The patent divides the testing system into multiple independent testing units, each capable of generating its own electrical field and performing measurements independently. This segmentation allows simultaneous multi-point testing without electrical interference between units, as each unit operates as an independent measurement system with its own field generation and detection circuitry
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 planar elements, reducing damage and ensuring only flawless elements are used for cell stacks, improving production efficiency and quality.
Implementation Method 1
the testing units each comprise a carrier which has electrically insulating properties and by means of which the contact surfaces of the relevant testing unit are supported in a predefined position and orientation
Data Source
AI summary
Disclosed is a testing device for the energy cell production industry, wherein the testing device is designed for testing planar elements that are suitable for forming a cell stack, whereinthe testing device comprises multiple testing units which can be moved relative to a stationary part of the testing device by means of a conveying apparatus, whereinthe testing units each comprise at least two contact surfaces for making electrical and/or signal-transmitting contact with a planar element that is to be tested, whereinthe testing units each comprise a carrier which has electrically insulating properties and by means of which the contact surfaces of the relevant testing unit are supported in a predefined position and orientation with respect to one another, whereinthe carriers of the testing units are fastened to the conveying apparatus.