Laminated Battery Cell Assembly With Continuous Separator Alignment
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Solution Overview
Problem
Existing thermal composite laminated cells face issues of low processing efficiency and poor alignment of negative and positive electrode sheets due to the inefficient Z-shaped lamination process.
Innovation Solution
A thermal composite laminated cell design featuring a plurality of first and second cell units with alternately disposed negative and positive electrode sheets separated by a continuous layer structure separator, reducing folding times and improving alignment through a controlled arrangement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a Z-shaped lamination process is used to prepare the thermal composite laminated cell, then the separator can be continuously folded to separate electrode sheets, but the processing efficiency becomes low and the alignment of electrode sheets becomes poor
Solution Approach 1:
The patent divides the electrode assembly into multiple independent cell units (first cell units and second cell units), each containing a complete set of negative electrode sheets, separator, and positive electrode sheets. This segmentation allows parallel processing of multiple units simultaneously, dramatically improving manufacturing efficiency while maintaining proper alignment within each unit.
Solution Approach 2:
The separator is pre-formed with a continuous layer structure including multiple main bodies and bent portions before assembly. This preliminary preparation of the separator structure enables easier and faster assembly of cell units without requiring complex real-time folding operations during the lamination process, thus improving processing efficiency.
2Ease of manufacture
If a Z-shaped lamination process is used to prepare the thermal composite laminated cell, then the separator can be continuously folded to separate electrode sheets, but the alignment of negative electrode sheet and positive electrode sheet becomes poor
Solution Approach 1:
By dividing the assembly into discrete cell units with fixed internal structures, each unit maintains precise alignment of its electrode sheets and separator. The modular design ensures that alignment is controlled at the unit level rather than requiring precise control across the entire continuous folding process, significantly improving manufacturing precision.
Solution Approach 2:
The separator with its continuous layer structure acts as an intermediary element that pre-establishes the spatial relationship and alignment between negative and positive electrode sheets. The bent portions and main bodies of the separator serve as structural guides that automatically ensure proper alignment during assembly, eliminating the need for complex alignment procedures.
3Adaptability or versatility
If multiple folding procedures are used in the Z-shaped process, then the separator can accommodate complex electrode arrangements, but the number of processing procedures increases and efficiency decreases
Solution Approach 1:
The patent achieves complex electrode arrangements by assembling multiple standardized cell units in series rather than through complex folding procedures. Each unit has a simple, standardized structure that can be easily manufactured, and the overall complexity is managed through modular assembly rather than complex processing steps.
Solution Approach 2:
The separator is pre-formed with its continuous layer structure including bent portions and main bodies designed to accommodate the desired electrode arrangements. This preliminary structuring of the separator eliminates the need for multiple complex folding procedures during assembly, reducing processing complexity while maintaining adaptability for different electrode configurations.
Data Source
AI summary
A thermal composite laminated cell and a battery cell are disclosed by this application. The thermal composite laminated battery cell includes a first cell unit, a second cell unit and a separator with a continuous layer structure, wherein the outermost sides of the first cell unit are negative electrode sheets, and the outermost sides of the second cell unit are positive electrode sheets. The separator with a continuous layer structure includes a plurality of main bodies and a plurality of bent portions all alternately and continuously disposed, the first cell units and the second cell units are alternately disposed in a thickness direction, and the adjacent first cell unit and the second cell unit are separated by the main body.