Electrode Plate Exposed-Core Marking for Uniform Battery Assembly
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Solution Overview
Problem
Existing battery technologies face challenges in accurately forming identification marks on electrode plates, particularly on leads with small widths, and in maintaining high accuracy of these marks despite variations in core rigidity. Additionally, the formation of identification marks on electrode cores can lead to non-uniform spacing between layers in electrode assemblies, affecting assembly quality.
Innovation Solution
The proposed solution involves an electrode plate with a band-like core, a mixture layer on each surface of the core, and an exposed part where the core is exposed. The identification mark is formed on this exposed part, which is positioned where both surfaces of the core face each other and is adjacent to the mixture layer. This configuration allows for high-accuracy formation of identification marks regardless of core rigidity and maintains uniform spacing in the electrode assembly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If an identification mark is formed on the lead, then the lead can serve as the marking surface, but the lead is small in width making it difficult to form an identification mark part
Solution Approach 1:
The patent transitions from forming identification marks on the narrow lead (1D surface) to forming marks on the exposed part of the core (2D surface). By utilizing the core's exposed surface area in the longitudinal direction, the marking area is significantly expanded while maintaining proximity to the lead for electrical connection purposes.
2Area of stationary object
If an identification mark is formed on the core, then the marking surface area increases, but the rigidity of the core decreases making high accuracy formation difficult
Solution Approach 1:
The patent applies local quality by creating an exposed part with specific dimensional characteristics (length and width ratios) that optimize both rigidity and mark formation accuracy. The exposed part's geometry is carefully controlled to maintain sufficient rigidity for precise marking while providing adequate surface area for identification mark formation.
3Area of stationary object
If an identification mark is formed on the core, then the marking can be done with sufficient surface area, but the mixture layer on the opposite side bulges causing non-uniform spaces among layers
Solution Approach 1:
The patent segments the core into distinct functional zones: a covered portion with mixture layers for electrochemical function, and an exposed part for identification marking. This segmentation allows the exposed part to serve as a rigid marking surface while the covered portions maintain uniform mixture layers, preventing bulging issues.
Data Source
AI summary
This electrode plate has a strip-like core, a mixture layer formed on both sides of the core, and an exposed section in which the core is exposed, and which is provided so as to be in contact with one short-direction end of the core. The exposed section is provided in mutually opposing positions on both sides of the core and is adjacent to the mixture layer in the short direction and long direction of the core. A lead is connected to the exposed section so as to extend out of one end on either surface of the core. An identification display part by which a manufacturing process history can be identified is formed in the exposed section on either surface of the core.