Battery Winder Frame Segmentation and Air Turn Bar Reorientation
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Solution Overview
Problem
Conventional winders for rechargeable battery electrode assemblies require large spaces and are heavily loaded due to the arrangement of spools, which hampers efficiency and mobility.
Innovation Solution
The winder design incorporates a first frame for spools in front and a second frame on the side, with a reorienter using air turn bars and a position controller with pivot devices to efficiently manage the conveyance and positioning of electrode and separator members, reducing space requirements and weight.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If spools are arranged in a conventional single-frame configuration, then the winder can supply all necessary members (negative electrode member, positive electrode member, and separator members), but the device occupies large space and has high weight
Solution Approach 1:
The winder frame is segmented into a first frame and a second frame, with the first frame holding the negative electrode member spool and first separator member spool, and the second frame holding the positive electrode member spool and second separator member spool. This segmentation allows compact arrangement of all necessary spools while reducing overall device footprint and weight.
2Device complexity
If all spools are installed in a single frame, then the structure is simple, but the winder requires large space and has heavy weight
Solution Approach 1:
The spools are arranged in two different dimensions by using two separate frames positioned at different locations. The first frame and second frame are spatially separated, allowing spools to be distributed across multiple dimensions rather than crowded in a single plane, thereby reducing the overall space requirement while maintaining structural simplicity.
3Length of moving object
If members are conveyed directly from spools to mandrel without reorientation, then the conveyance path is short, but the members cannot be properly positioned for winding
Solution Approach 1:
Air turn bars are introduced as intermediary devices between the spools and the mandrel. These air turn bars reorient the members (negative electrode member, positive electrode member, and separator members) to the appropriate conveyance direction without significantly increasing the overall path length, enabling proper positioning for winding while maintaining efficient material flow.
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
This configuration enhances space usage efficiency and minimizes the winder's load by strategically placing spools and using air turn bars and pivot devices to reorient and position members effectively, resulting in a more compact and lightweight setup.
Implementation Method 1
The reorienter is formed with an air turn bar installed at ends of the first frame and the second frame
Implementation Method 2
The position controller is formed with a pivot device installed in the first frame and disposed at a front of the mandrel in the convey direction of the member
Data Source
AI summary
A winder for an electrode assembly of a rechargeable battery for improving space usage is disclosed. The winder includes a plurality of spools supplying a negative electrode member, a positive electrode member, a first separator member, and a second separator member, a mandrel stacking and spirally winding the first separator member, the negative electrode member, the second separator member, and the positive electrode member supplied by the spool, a first frame accommodating a predetermined number of spools from among the plurality of spools and the mandrel, a second frame connected to the first frame and accommodating other spools from among the plurality of spools, a reorienter installed between the first frame and the second frame and reorienting a progressing direction of one of the members, and a position controller controlling a position of the member that passes through the reorienter and progresses towards the mandrel.