Vacuum-Assisted Battery Case Sealing for Real-Time Pressure Analysis
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Solution Overview
Problem
Existing technologies face challenges in simulating the status condition of actual batteries and analyzing gas volume and pressure changes in real time within battery cases without leakage, which is crucial for evaluating battery case durability and performance.
Innovation Solution
A battery case analyzing apparatus with a sealing portion, gas and vacuum forming passages, and a vacuum pump system that maintains airtightness and allows real-time pressure analysis by injecting gas and forming a vacuum to simulate battery case conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of time
If gas is injected into the battery case from the outside to measure pressure limit, then measurement time is reduced, but maintaining airtightness without leakage becomes difficult
Solution Approach 1:
The patent introduces a sealing portion as an intermediary component between the gas injection line and the battery case. This sealing portion includes a sealing groove and sealing member that create a reliable seal, preventing gas leakage while enabling rapid pressure injection for time-efficient measurement.
Solution Approach 2:
The sealing portion is divided into separate functional components: a sealing groove formed in the sealing portion, a sealing member inserted into the groove, and a gas injection passage. This segmentation allows each component to be optimized for its specific function while working together to maintain airtightness during rapid gas injection.
2Reliability
If sealing portion is designed to maintain airtightness, then reliability is improved, but device complexity increases
Solution Approach 1:
The sealing member is designed as a flexible component that can deform to accommodate slight variations in the battery case surface and injection hole positioning. This flexibility maintains reliable sealing without requiring complex rigid sealing structures, thus improving airtightness while controlling device complexity.
Solution Approach 2:
Instead of making the battery case complex to achieve sealing, the patent inverts the approach by adding a dedicated sealing portion with a sealing groove and sealing member. This separates the sealing function from the battery case structure itself, simplifying the overall system while improving reliability.
3Reliability
If vacuum forming groove is added to enhance sealing, then airtightness is improved, but manufacturing complexity increases
Solution Approach 1:
The vacuum forming groove utilizes vacuum (pressure phase transition) to enhance sealing performance. By creating a vacuum environment in the groove, the sealing member is pressed against the battery case surface, improving airtightness without requiring complex mechanical fastening or multi-step manufacturing processes.
Solution Approach 2:
The vacuum forming groove is integrated into the sealing portion structure, combining the sealing function with the mounting structure. This merging of functions reduces the number of separate components and manufacturing steps, improving sealing performance while maintaining ease of manufacture.
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
The apparatus ensures rapid and accurate pressure measurement and analysis, minimizing time, human errors, and deformation, while preventing electrolyte reverse flow and maintaining sealing even under deformation, thus enhancing battery case durability evaluation.
Implementation Method 1
a vacuum pump configured to form a vacuum in a vacuum forming groove formed on a lower side of the sealing portion
Data Source
AI summary
A battery case analyzing apparatus includes a sealing portion which covers an injection hole formed on an upper side of a battery case. The sealing portion includes a lower side contacting the upper side of the battery case, a gas injection passage, and a vacuum forming passage formed in the sealing portion. The apparatus includes a gas injection line which is connected to an inlet of the gas injection passage formed on an upper side of the sealing portion, a vacuum forming line which is connected to an outlet of the vacuum forming passage formed on the upper side of the sealing portion, a gas supply portion configured to inject gas into the battery case through the gas injection line, and a vacuum pump which is connected to the vacuum forming line to form a vacuum in a vacuum forming groove formed on the lower side of the sealing portion.