Electrode Tab Compaction Blades With Variable Diameter Control
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Solution Overview
Problem
Existing processing apparatuses for secondary battery electrode assemblies face challenges in compacting battery material tabs efficiently, particularly in adjusting the diameter of the central area processed by the blades to accommodate various electrode assembly sizes.
Innovation Solution
A processing apparatus comprising a vertical plate, a rotatable plate, and a plurality of blades that form a variable diameter central area through relative rotation, with the blades' ends arranged at specific angles to compact the base material tab of the electrode assembly, allowing for adjustment from a diameter equal to or greater than the tab to zero, facilitated by a gear part and support unit for precise movement and compaction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a fixed diameter central area is used for processing, then the structure is simple, but it cannot accommodate electrode assemblies of different sizes
Solution Approach 1:
The patent applies the dynamics principle by making the central area diameter variable rather than fixed. The rotatable plate can rotate relative to the vertical plate, causing the blades to change their radial positions and thus vary the diameter of the central area. This dynamic adjustment mechanism allows the processing apparatus to accommodate electrode assemblies of different sizes while maintaining a relatively simple overall structure.
2Manufacturing precision
If the central area diameter is fixed, then the device structure is simple, but the compaction effectiveness varies for different tab sizes
Solution Approach 1:
The dynamics principle is applied to achieve variable compaction precision. By rotating the rotatable plate, the blades can dynamically adjust their positions to create different central area diameters that match different tab sizes. This ensures optimal compaction precision for each specific tab size without requiring complex fixed arrangements for each possible size.
Solution Approach 2:
The patent applies parameter changes by varying the diameter of the central area processed by the blades. The rotatable plate mechanism changes the spatial parameter (diameter) of the processing zone, allowing the same blade structure to achieve precise compaction for different tab diameters by simply adjusting the rotation angle of the rotatable plate.
3Productivity
If multiple fixed blade configurations are used for different sizes, then compaction precision is maintained, but the device complexity and adjustment time increase
Solution Approach 1:
The dynamics principle resolves this contradiction by providing a single dynamic adjustment mechanism (the rotatable plate) that can continuously vary the central area diameter. This eliminates the need for multiple fixed blade configurations or time-consuming manual adjustments, thereby maintaining high processing efficiency while keeping the device structure relatively simple.
Solution Approach 2:
The rotatable plate mechanism serves multiple functions: it adjusts the central area diameter, positions the blades for different tab sizes, and enables continuous adaptation to various electrode assembly dimensions. This multi-functionality improves productivity by eliminating the need for separate adjustment mechanisms for each size category.
Data Source
AI summary
A processing apparatus for a base material tab protruding from a cylindrical electrode assembly includes: a vertical plate arranged in a second direction perpendicular to a first direction, the first direction being a longitudinal direction of the electrode assembly; a rotatable plate that is a planar plate arranged parallel to the vertical plate and coupled to be rotatable relative to the vertical plate; and a plurality of blades coupled between the vertical plate and the rotatable plate. The blades together form a variable diameter central area defined by ends of the blades according to the relative rotation of the rotatable plate to process the base material tab of the electrode assembly.