Electrode Assembly Tab Structure for Precise Battery Stacking
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Solution Overview
Problem
The existing methods for manufacturing rechargeable batteries require additional processes and materials for fixing electrodes, increasing manufacturing cost and time, which is inefficient for high-speed production.
Innovation Solution
The electrode assembly includes first and second electrodes with uncoated protruding portions featuring inner and outer tabs that are bent in opposite directions, allowing for efficient stacking and alignment without additional fixing processes, using a bundle-type fixation body to maintain electrode alignment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If a process of fixing the electrode is added to ensure proper alignment during stacking, then the alignment precision is improved, but the manufacturing time and cost are increased
Solution Approach 1:
The electrode uncoated portions are formed with protruding shapes and cut lines creating inner and outer tabs before the stacking process. This preliminary shaping allows the electrodes to self-align during high-speed stacking without requiring additional fixing processes, thereby maintaining alignment precision while reducing manufacturing time
Solution Approach 2:
The electrode structure itself serves the alignment function through its protruding uncoated portions with cut lines. The inner and outer tabs naturally guide the stacking alignment, eliminating the need for separate fixing facilities or materials, thus reducing both time and cost while ensuring proper alignment
2Stability of the object's composition
If a process of fixing the electrode is added to maintain electrode alignment, then the alignment stability is improved, but the device complexity is increased
Solution Approach 1:
The fixing process is extracted and eliminated from the manufacturing sequence. Instead of adding a separate fixing step, the alignment function is integrated into the electrode structure itself through the protruding uncoated portions with cut lines, simplifying the overall process while maintaining alignment stability
Solution Approach 2:
The electrode structure performs its own alignment function without external fixing aids. The inner and outer tabs formed by cut lines in the protruding uncoated portions self-guide the stacking process, reducing device complexity while ensuring stable alignment
3Manufacturing precision
If additional facilities and materials are used for electrode fixing, then the manufacturing precision is improved, but the manufacturing cost is increased
Solution Approach 1:
The electrode uncoated portion serves multiple functions: it provides the protruding shape for alignment, contains the cut lines that create inner and outer tabs for self-guiding during stacking, and eliminates the need for separate fixing materials. This multi-functionality reduces manufacturing cost while maintaining stacking precision
Solution Approach 2:
The electrode structure itself provides the alignment mechanism through its protruding uncoated portions with cut lines, eliminating the need for additional fixing facilities or materials. This self-service approach reduces manufacturing cost while ensuring precise stacking
Data Source
AI summary
An electrode assembly includes a first electrode having a first electrode uncoated portion with a protruding shape, a second electrode having a second electrode uncoated portion with a protruding shape, and a separator disposed between the first electrode and the second electrode, wherein the first electrode uncoated portion includes a first inner tab and a first outer tab separated by a cut line provided inside the first electrode uncoated portion, and wherein the second electrode uncoated portion includes a second inner tab and a second outer tab separated by a cut line provided inside the second electrode uncoated portion.