Electrode Assembly Guide Jig for Collision-Free Case Insertion
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Solution Overview
Problem
Existing secondary battery manufacturing processes face challenges in preventing collisions between the electrode assembly and the case, which can lead to short circuits and misalignment issues during the insertion of the electrode assembly into the case.
Innovation Solution
The introduction of a guide jig adjacent to the lower portion of the electrode assembly, which is driven by a unit to descend synchronously with the electrode assembly, maintains a separation gap and guides the electrode assembly to prevent collisions with the case.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the electrode assembly is inserted into the case without a guide jig, then the insertion process is simpler and faster, but the risk of collision between the electrode assembly and case increases
Solution Approach 1:
A guide jig is introduced as an intermediary component between the electrode assembly and the case. The guide jig includes guide blocks that extend into the case to guide the electrode assembly during insertion, preventing collision while maintaining a relatively simple overall process
Solution Approach 2:
The guide jig is divided into multiple guide blocks (first guide blocks and second guide blocks) positioned at different locations. Each guide block independently guides specific portions of the electrode assembly, allowing distributed collision prevention without requiring a complex monolithic structure
2Reliability
If a guide jig is used to prevent collision, then the reliability of insertion improves, but the device complexity and manufacturing cost increase
Solution Approach 1:
The guide blocks are designed with streamlined cross-sections and rounded corners (R5-R10) to reduce resistance and prevent damage. This streamlined design allows the guide blocks to be manufactured as simple, aerodynamic-shaped components rather than complex rigid structures, easing manufacturing while maintaining protective function
Solution Approach 2:
The guide jig is designed to be movable rather than fixed, allowing it to be positioned adjacent to the lower portion of the electrode assembly and descend synchronously with it. This dynamic positioning enables collision prevention without requiring a permanently complex installed structure
3Reliability
If the guide jig maintains a separation gap from the electrode assembly, then collision risk is reduced, but the precision of alignment may be compromised
Solution Approach 1:
The guide blocks are positioned in advance to extend into the case, creating a pre-established guidance path. The electrode assembly is guided along this pre-positioned path during insertion, ensuring both separation for collision prevention and precision through the predetermined guide geometry
Solution Approach 2:
The guide blocks have specific localized features including streamlined cross-sections at surfaces facing the electrode assembly and rounded corners with R5-R10 radii. These local quality enhancements provide precise guidance and protection at critical contact points while maintaining simplicity elsewhere in the structure
Data Source
AI summary
The present disclosure provides secondary battery-manufacturing equipment including a guide jig configured to be adjacent a lower portion of an electrode assembly at a position at which the electrode assembly is to be inserted into a case, and configured to descend together with the electrode assembly, a driving unit configured to drive the guide jig, and a control unit configured to control the driving unit.