Electrode String Assembly with Movable Segments for Precise Battery Stacking
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing methods for producing electrode strings and battery cell stacks face challenges in cycle time and process control, leading to inefficiencies and potential impurities during the lamination and cutting processes.
Innovation Solution
A method and apparatus for providing electrode strings with a separator web and electrode segments, involving a transport system with movable units for precise cutting and positioning, followed by lamination between hard surfaces to improve format flexibility and reduce heat influence on the cutting process, allowing for efficient production of mono cells and cell stacks.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a continuous lamination process is used to improve productivity, then output increases, but process control difficulty and potential impurities increase
Solution Approach 1:
The continuous lamination process is divided into discrete segments: individual electrode substrates are picked up, cut into segments, positioned, and laminated onto the separator web in a controlled sequence. This segmentation allows each step to be precisely controlled while maintaining continuous production flow, resolving the contradiction between high output and process control difficulty.
2Manufacturing precision
If laser cutting is used to separate electrodes, then cutting precision is improved, but heat influence and potential impurities increase
Solution Approach 1:
The patent replaces laser cutting with a mechanical cutting system that uses a cutting tool to physically separate the electrode substrates. This mechanical approach eliminates the heat influence and impurity generation associated with laser cutting while maintaining precise cutting through controlled mechanical motion and positioning.
3Manufacturing precision
If complex transport systems are used to improve positioning accuracy, then positioning precision is improved, but device complexity increases
Solution Approach 1:
The patent introduces a guide track as an intermediary element that constrains and guides the transport units along a predetermined path. This simple mechanical guide structure enables precise positioning of electrode substrates without requiring complex control systems, resolving the contradiction between positioning accuracy and device complexity.
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
This approach enables faster cycle times, reduces impurities, and enhances format flexibility, resulting in high-quality mono cells and cell stacks with improved accuracy and reduced computational requirements.
Implementation Method 1
the separator is first sucked onto a vacuum belt
Implementation Method 2
electrodes are sucked on a drum
Data Source
AI summary
An method for providing an electrode string which has a separator web and electrode segments attached thereto at a distance from one another by: a) providing a web-shaped electrode substrate; b) picking up the web-shaped electrode substrate with a transport system having transport units individually movable along a guide track, and moving the electrode substrate in a planar manner along a cutting plane; c) cutting the web-shaped electrode substrate in the cutting plane in order to cut off electrode segments which are each arranged individually on one of the transport units; d) adjusting a distance between cut electrode segments with relative movement of the transport units in order to position the electrode segments relative to one another; e) providing a separator web; f) applying and fixing the electrode segments positioned relative to one another on the separator web.