Coupling Clip Handling for Secondary Battery Electrode Leads
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Secondary batteries face issues such as electrode lead damage and deformation during manufacturing, leading to defects like wrinkling and tab disconnection, which affect battery performance and lifespan.
Innovation Solution
A method involving an accommodating, sealing, coupling, and transfer process using a coupling clip made of rubber and plastic materials to secure and straighten the electrode lead, preventing deformation and damage during manufacturing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If welding conditions are adjusted to improve electrode lead bending, then bending degree improves, but tab disconnection risk increases
Solution Approach 1:
The patent introduces a coupling clip as an intermediary component between the gripper and the electrode lead. The coupling clip includes a gripping portion that interfaces with the gripper and a lead receiving portion that interfaces with the electrode lead, thereby mediating the force transmission and reducing direct mechanical stress on the electrode lead and tab connection during handling and welding operations.
2Productivity
If electrode lead is gripped directly during transfer, then transfer efficiency improves, but lead damage probability increases
Solution Approach 1:
The coupling clip serves as a mediator between the gripper and the electrode lead. The gripping portion of the coupling clip is designed to be engaged by the gripper, while the lead receiving portion securely holds the electrode lead. This intermediary structure enables efficient transfer operations while protecting the electrode lead from direct gripping forces that could cause damage.
Solution Approach 2:
The coupling clip provides beforehand cushioning by absorbing and distributing mechanical stresses before they reach the electrode lead. The clip's structure includes cushioning portions that can deform elastically to absorb impact forces during gripping and transfer operations, thereby protecting the electrode lead from damage before the harmful forces can affect it.
3Manufacturing precision
If pouch sealing is performed tightly, then sealing quality improves, but electrode lead deformation increases
Solution Approach 1:
The coupling clip provides beforehand cushioning during the sealing process. The clip's structure includes cushioning portions that can deform elastically to absorb compression forces applied during pouch sealing. This prevents excessive force from being transmitted to the electrode lead, thereby maintaining lead straightness while still achieving quality sealing of the pouch.
Data Source
AI summary
A method for manufacturing a secondary battery includes: an accommodating process of accommodating an electrode assembly in a battery case so that an electrode lead connected to the electrode assembly protrudes to both sides of the outside of the battery case; a sealing process of sealing an outer circumferential surface of the battery case after the accommodating process; a coupling process of coupling a coupling clip to the electrode lead after the sealing process; and a transfer process of transferring the cell to a position for a next process after a gripper grips the coupling clip after the coupling process.