Battery Liquid Injection Hole Positioning for Accurate Sealing
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Solution Overview
Problem
The formation of crystallization around the liquid injection hole during electrolyte injection in batteries affects the precision of sealing, making it difficult to accurately determine the center point of the liquid injection hole and potentially leading to issues like short circuits due to inaccurate positioning of metal sealing nails.
Innovation Solution
Incorporating a positioning portion with a second center point that allows for precise determination of the first center point of the liquid injection hole through a preset distance relationship, ensuring accurate positioning and sealing even in the presence of crystallization.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If electrolyte is injected through the liquid injection hole, then the battery can be filled with electrolyte, but crystallization forms around the injection hole making positioning difficult
Solution Approach 1:
The patent applies preliminary action by pre-forming a positioning portion on the battery casing before electrolyte injection. This positioning portion includes a second center point that has a preset distance relationship with the first center point of the liquid injection hole. By establishing this reference structure in advance, the system enables accurate positioning of the liquid injection hole center even after crystallization occurs during electrolyte injection, thus resolving the measurement precision problem while maintaining the electrolyte filling function.
2Reliability
If sealing nail is used to seal the liquid injection hole, then the injection hole can be sealed, but positioning accuracy is affected by crystallization
Solution Approach 1:
The patent introduces an intermediary element - the positioning portion with the second center point - that mediates between the crystallized liquid injection hole and the sealing nail. This positioning portion serves as a reference structure that is not affected by crystallization, allowing the sealing nail to be positioned accurately relative to the liquid injection hole center even when crystallization is present. The preset distance relationship between the first and second center points enables precise positioning without direct contact with the crystallized area.
3Measurement precision
If direct positioning of liquid injection hole center is attempted, then positioning can be done, but crystallization makes it difficult to determine the center point
Solution Approach 1:
The patent applies segmentation by separating the positioning function from the liquid injection hole itself. Instead of trying to directly position the liquid injection hole center (first center point) which is obscured by crystallization, the system creates a separate positioning portion with a second center point. This segmentation allows the positioning reference to be established independently from the problematic injection hole area, maintaining measurement precision while adding minimal complexity through the preset distance relationship.
Data Source
AI summary
The disclosure relates to the technical field of batteries, and provides a battery and a method for manufacturing the battery. The battery includes a liquid injection hole and a positioning portion, the liquid injection hole has a first center point, the positioning portion is formed with a second center point. There is a preset distance between the first center point and the second center point, so as to determine the first center point through the second center point. The liquid injection hole has a first center point, the positioning portion is formed with the second center point, and there is a preset distance between the first center point and the second center point.