Battery Cell Sealing Part Folding in Narrow Gaps
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Solution Overview
Problem
The manufacturing process of battery cells is challenging due to the difficulty in folding the narrow sealing part accurately, which can lead to damage and defects.
Innovation Solution
An apparatus with a support unit and pressing unit that includes rotatable and straight-shaped support portions, allowing precise folding and pressing of the sealing part, even in narrow gaps, using a guide unit and cylinders to stabilize the process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If the sealing part is folded using conventional methods, then the folding operation can be performed, but the folding precision is poor and the battery cell may be damaged due to the narrow area of the sealing part
Solution Approach 1:
The support unit is divided into multiple support portions (first support portion, second support portion, third support portion) that can independently reciprocate in different directions. This segmentation allows each support portion to independently control and stabilize the sealing part during folding, improving folding precision while preventing battery cell damage through distributed support.
Solution Approach 2:
The support portions are designed to reciprocate (move back and forth) in different directions during the folding process. This dynamic movement allows the support portions to adapt to the narrow sealing part area, maintain stable contact, and provide continuous support throughout the folding operation, thereby improving precision and preventing damage.
2Manufacturing precision
If the sealing part is folded in a narrow gap between body part and sealing part, then the folding operation can be completed, but it is difficult to maintain stable folding angle and perform reliable pressing
Solution Approach 1:
Each support portion is assigned a specific function and movement direction tailored to its location: the first support portion reciprocates in a first direction, the second support portion reciprocates in a second direction inclined at 45-60 degrees, and the third support portion reciprocates in a third direction. This localized differentiation of support functions and movement characteristics enables stable folding angle maintenance in narrow gaps while managing device complexity through functional specialization.
Solution Approach 2:
The support portions reciprocate in multiple different directions (first direction, second direction inclined at 45-60 degrees, third direction) rather than a single direction. This multi-dimensional reciprocation allows the pressing unit to access and stabilize the sealing part in narrow gaps from multiple angles, maintaining stable folding angles while managing the complexity through spatial distribution of support functions.
3Reliability
If conventional pressing methods are used on the sealing part, then the pressing operation can be performed, but the pressing reliability is low due to the narrow area and potential interference
Solution Approach 1:
The support unit is segmented into multiple support portions that can independently reciprocate, allowing the pressing operation to be distributed across multiple contact points. This segmentation improves pressing reliability by providing stable support from multiple directions while reducing interference through coordinated reciprocation movements of each support portion.
Solution Approach 2:
The support portions dynamically reciprocate in different directions during the pressing operation, adapting their positions to maintain optimal contact with the sealing part. This dynamic reciprocation ensures reliable pressing while simplifying the operation through automatic adaptation to the narrow sealing part geometry.
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
Ensures stable folding angles and reliable pressing, preventing interference and maintaining the shape of the sealing part, even in small gaps between the body and sealing parts of the battery cell.
Implementation Method 1
a pressing unit moving toward the support unit to bend the sealing part
Implementation Method 2
The pressing surface may be in contact with the sealing part to heat the sealing part
Data Source
AI summary
An apparatus for manufacturing a battery cell for processing a sealing part of a battery cell, the sealing part being formed on one side of a body part in which an electrode assembly is accommodated, includes: a support unit including a first support portion and a second support portion supporting the battery cell in different directions; and a pressing unit moving toward the support unit to bend the sealing part, wherein the first support portion reciprocates in a first direction, the second support portion reciprocates in a second direction, and the second direction is inclined with respect to the first direction.