Electrode Stack Tape Joining to Prevent Folding and Shorts
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Solution Overview
Problem
Existing methods for securing electrode stacks in batteries often result in interference and damage, leading to electrical shorts due to the folding of adhesive tapes, which can affect battery performance.
Innovation Solution
A method and apparatus for securing an electrode stack using first and second adhesive tapes applied to the sides of the stack, where the tapes are attached to each other to prevent separation and damage, ensuring proper stacking without interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If adhesive tapes are folded around the edges of the electrode stack to secure it, then the electrode stack is secured, but interference occurs causing electrode sheets and separator sheets to fold, separate, or damage
Solution Approach 1:
The adhesive tape is divided into multiple segments: a first adhesive tape portion applied to the side face, a second adhesive tape portion applied to the top/bottom faces, and these portions are connected but not fully folded. This segmentation prevents the tape from interfering with the electrode stack while maintaining securing function.
Solution Approach 2:
The harmful folding action is extracted and replaced. Instead of folding the adhesive tape around the edges (which causes interference), the tape is applied directly to the surfaces and connected, removing the folding step that causes damage to electrode sheets and separator sheets.
2Stability of the object's composition
If adhesive tapes are folded around the edges of the electrode stack, then the electrode stack is secured, but electrical shorts may occur between electrode sheets of opposite polarity
Solution Approach 1:
The adhesive tape is segmented into portions applied to different surfaces (side face and top/bottom faces) rather than being fully folded around edges. This prevents contact between the tape and electrode sheets of opposite polarity, eliminating the risk of electrical shorts while maintaining stack stability.
3Object-affected harmful factors
If adhesive tapes are applied to cover sides and portions of edges of the electrode stack, then the electrode stack is secured without folding, but the tapes must be attached to each other
Solution Approach 1:
Multiple adhesive tape portions (first portion on side face, second portion on top/bottom faces) are merged by attaching them to each other, forming a unified securing structure. This combines the securing function across different surfaces while avoiding the complexity of full folding.
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 effectively secures the electrode stack, preventing interference and damage, thereby enhancing battery performance by maintaining electrical integrity.
Implementation Method 1
The first adhesive tape and the second adhesive tape are attached to each other for securing the electrode sheets in the electrode stack
Data Source
Figure 1
Figure 2
Figure 3a~3b
AI summary
Disclosed is a method (100) for manufacturing an electrode assembly (200) for use in a battery, the method comprising receiving an electrode stack (202) comprising a plurality of electrode sheets stacked in a stacking direction, the electrode stack having a first side (202A), a second side (202B) opposite to the first side and a third side (202C) extending between the first and second sides, the first and second sides extending perpendicular or substantially perpendicular to the stacking direction; arranging a first adhesive tape (210) on the first and third sides of the electrode stack such that the first adhesive tape covers the first side at least in part and a portion of the third side abutting the first side; arranging a second adhesive tape (212) on the second and third sides of the electrode stack such that the second adhesive tape covers the second side at least in part and a portion of the third side abutting the second side; and attaching the first adhesive tape and the second adhesive tape to each other for securing the electrode sheets in the electrode stack.