Electrode Stacking Frame With Guide Grooves for Precise Cell Alignment
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Solution Overview
Problem
Existing electrode assembly manufacturing technologies face challenges in precisely positioning basic units during stacking, leading to misalignment, which affects energy density and efficiency.
Innovation Solution
An electrode stacking device with a battery frame and guide parts that include accommodation spaces and auxiliary guide parts to ensure precise alignment of electrodes and separators, allowing for high-pressure assembly and improved cell performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If multi-stage stacked electrode assembly is manufactured without precise positioning guides, then manufacturing process is simple, but electrode alignment precision deteriorates
Solution Approach 1:
The patent introduces guide parts as intermediary components between the base part and the electrode units. These guide parts include guide grooves that act as mediators to precisely position and align the electrode units during stacking, thereby achieving high alignment precision without requiring complex external positioning systems.
Solution Approach 2:
The stacking device is segmented into functional modules: a base part for supporting electrodes, guide parts with guide grooves for positioning, and accommodation parts for organizing electrode units. This segmentation allows each component to perform its specific function efficiently, achieving precise alignment through the coordinated action of simple, specialized parts rather than a monolithic complex structure.
2Reliability
If electrodes are stacked without guide parts, then device structure is simple, but energy density and efficiency deteriorate
Solution Approach 1:
Guide parts serve as intermediary components that ensure reliable electrode alignment during stacking. The guide grooves in these intermediary parts precisely position each electrode unit, guaranteeing the alignment necessary for high energy density and efficient cell performance without requiring complex external positioning systems.
Solution Approach 2:
The guide parts are pre-configured with guide grooves and accommodation parts that establish the correct positioning of electrode units before the actual stacking process begins. This preliminary arrangement of guides ensures that electrodes are aligned properly from the start, preventing misalignment issues and ensuring reliable cell performance throughout the stacking operation.
3Measurement precision
If basic units are stacked without accommodation parts, then manufacturing process is simple, but positioning precision deteriorates
Solution Approach 1:
The guide parts with guide grooves act as intermediary positioning mechanisms between the base part and the electrode units. These intermediary structures provide precise reference surfaces and constraints that enable accurate determination of stacking positions, achieving high measurement precision without requiring complex external measurement systems.
Solution Approach 2:
The guide grooves in the guide parts are designed as precise geometric copies or templates of the desired electrode positioning pattern. By replicating the ideal stacking geometry in the guide structure itself, the system achieves high positioning precision through geometric constraint rather than through complex measurement and adjustment mechanisms.
Data Source
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AI summary
An electrode stacking device includes a battery frame configured to stack at least one electrode and a separator, the battery frame including: a base part configured to support the at least one electrode and the separator; and a guide part provided on one side of the base part, the guide part including: a first guide part having at least one first accommodation part configured to accommodate an electrode terminal part of the at least one electrode; and a second guide part having at least one second accommodation part configured to accommodate an auxiliary guide part. The first guide part and the second guide part are located at opposite ends of the base part.