Electrode Foil Winding with Rotating Transfer and Collecting Rollers
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing winding apparatuses for electrochemical cells require complex movements of oscillating frames and transfer rollers, which complicate the manufacturing process and increase the risk of damage to delicate electrode foils.
Innovation Solution
A winding apparatus with transfer devices that rotate about their own axes, allowing direct transfer of electrode foils and separator strips to collecting devices without changing the path, eliminating the need for oscillating frames and maintaining a consistent path for the materials.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If oscillating frames and transfer rollers are used to transfer electrode foils and separator strips, then the transfer of materials can be achieved, but the device complexity increases and the risk of material damage increases
Solution Approach 1:
The patent removes the oscillating frame mechanism entirely from the system. Instead of using complex oscillating frames to transfer materials, the invention uses a simplified arrangement where collector rollers directly receive materials from transfer rollers that are fixed to the rotating member, eliminating the source of complexity and potential damage.
Solution Approach 2:
Rather than having the transfer mechanism move to meet the collector, the invention inverts the approach by having the collector rollers move with the rotating member to meet the fixed transfer rollers. This reversal simplifies the overall mechanism while achieving the same transfer function.
2Ease of manufacture
If transfer rollers are made integral with oscillating frames to enable material transfer, then the transfer function is achieved, but the manufacturing complexity increases
Solution Approach 1:
The patent extracts and eliminates the oscillating frame from the system entirely. The transfer function is achieved through a simpler configuration where transfer rollers are directly mounted on the rotating member, and collector rollers are positioned to receive materials without requiring complex oscillating motion.
3Reliability
If the path of electrode foils and separator strips is continuously changed to accommodate oscillating frame movement, then the transfer operation can be performed, but the risk of material damage increases
Solution Approach 1:
Instead of changing the path of the materials to accommodate an oscillating frame, the invention inverts the approach by keeping the transfer rollers fixed and moving the collector rollers with the rotating member. This maintains a stable path for the materials while achieving the necessary transfer motion.
Data Source
Figure 1
Figure 2~2A
Figure 3~4
AI summary
A winding apparatus (1) for winding one or more strip-like separators and electrode foils together comprises a loading station (LS); a plurality of transfer devices (5) placed in the loading station (LS) and along a loading path (LP), wherein each transfer device (5) is rotatable about its own transfer axis (A1) and is configured to receive and transfer an electrode foil or a strip-like separator; a plurality of collecting devices (14), each of which is designed to face a respective transfer device (5) in the loading station (LS) to receive an electrode foil or a strip-like separator, each collecting device (14) being rotatable about its own winding axis (A2). When a collecting device (14) is facing a respective transfer device (5), the collecting device (14) rotates about its own winding axis (A2) and the winding axis (A2) rotates about the transfer axis (A1) of the transfer device (5).