Electrode Assembly Taping Jig With Non-Contact Tape Zones
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Solution Overview
Problem
The deposition of adhesive from the tape onto the cell seating jig during the taping process leads to stains and detachment of electrode plates and lifting of the case in rechargeable batteries.
Innovation Solution
An electrode assembly taping device and method that includes a cell seating jig with non-contact portions, such as cutout portions or escape grooves, to prevent adhesive contact with the jig, and a gripper and attachment roller to securely attach the tape to the electrode assembly without adhering to the jig.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the cell seating jig contacts the outer portion of the tape during taping, then the tape can be securely attached to the electrode assembly, but adhesive deposits on the cell seating jig causing stains and defects
Solution Approach 1:
The cell seating jig is segmented into a contact portion and a non-contact portion. The contact portion maintains engagement with the electrode assembly for stable positioning, while the non-contact portion excludes the outer portion of the tape, preventing adhesive deposition. This segmentation allows the jig to simultaneously provide structural support and prevent contamination.
Solution Approach 2:
The non-contact portion is designed to extract or exclude the outer portion of the tape from contact with the cell seating jig. By creating this exclusion zone, the adhesive on the tape's outer portion cannot deposit on the jig surface, eliminating the contamination problem while maintaining taping functionality.
2Object-affected harmful factors
If the cell seating jig is designed with non-contact portions to prevent adhesive contact, then adhesive deposition is prevented, but the structural complexity of the jig increases
Solution Approach 1:
The cell seating jig is divided into functional zones: a contact portion for electrode assembly engagement and a non-contact portion for tape exclusion. This segmentation is achieved through simple geometric features like protrusions or recesses that naturally create the non-contact zone, avoiding complex mechanisms while preventing adhesive deposition.
Solution Approach 2:
Different portions of the cell seating jig have different functional qualities. The contact portion has properties suitable for gripping and positioning the electrode assembly, while the non-contact portion has properties that exclude the tape's outer portion. This local differentiation of function achieves contamination prevention without requiring the entire jig to be complex.
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
Prevents adhesive deposition on the cell seating jig, thereby avoiding stains and detachment of electrode plates and case lifting, ensuring reliable taping of electrode assemblies.
Implementation Method 1
a bending jig separately disposed at both sides of the cell seating jig, the bending jig capable of adsorbing a cut tape
Data Source
Figure 1
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Figure 3(a)~3(c)
AI summary
An electrode assembly taping device of a rechargeable battery comprises: a cell seating jig; a bending jig that is separately disposed at both sides of the cell seating jig to adsorb a cut tape and relatively raise and lower the cell seating jig in a height direction; a gripper that introduces a wound or stacked electrode assembly to seat the electrode assembly on the cell seating jig; and an attachment roller that attaches the tape to the electrode assembly together with a relative raising and lowering operation of the cell seating jig and the bending jig and an operation of the gripper. The cell seating jig comprises a non-contact portion that is in non-contact with an outer line of the tape.