Battery Gas Collection Chamber With Punching and Adjustable Concentration
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Solution Overview
Problem
Existing gas collection methods for secondary batteries, particularly lithium secondary batteries, face challenges in accurately collecting and analyzing gases generated during operation due to variations in battery size and gas concentration, leading to inconsistent analysis results and difficulties in installing and removing batteries from diffusion chambers.
Innovation Solution
A gas collecting apparatus with an inner jig and outer housing that accommodates batteries of various specifications, featuring a punching unit to form a perforated hole for gas discharge, a punching driving unit for precise hole formation, and a sealing mechanism to maintain airtightness, along with a manifold system for adjusting gas concentration and automated gas collection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a diffusion chamber with airtight space is used for gas collection, then gas collection accuracy is improved, but battery installation and removal becomes difficult
Solution Approach 1:
The diffusion chamber is divided into an upper chamber and a lower chamber that can be separated. The battery is installed in the lower chamber, and the upper chamber is placed on top to form the airtight diffusion space. This segmentation allows easy battery installation and removal while maintaining gas collection accuracy when the chambers are assembled together.
Solution Approach 2:
The system transitions from a static sealed chamber to a dynamic assembly where the upper and lower chambers can be easily connected and disconnected. The dynamic design allows the chamber configuration to change based on whether the battery is being installed or gas is being collected, resolving the contradiction between ease of operation and measurement precision.
2Quantity of substance
If the diffusion chamber volume is reduced for high-concentration gas collection, then gas concentration is improved, but adaptability to different battery sizes decreases
Solution Approach 1:
The diffusion chamber is designed with a standardized interface that can accommodate batteries of various sizes. The upper and lower chamber configuration creates a universal platform where the same chamber assembly can collect gas from different battery types, maintaining both gas concentration and adaptability.
Solution Approach 2:
The system maintains optimal gas concentration by controlling the volume of the diffusion space formed between the upper and lower chambers, while the universal design allows this same volume configuration to work with batteries of different sizes through proper positioning and sealing mechanisms.
3Device complexity
If manual punching method is used to create gas discharge hole, then device complexity is reduced, but manufacturing precision and safety decrease
Solution Approach 1:
The manual punching operation is replaced with an automated punching mechanism that uses controlled mechanical force to create the gas discharge hole. This substitution eliminates the need for complex manual operations while achieving high precision hole formation at the battery seal, improving both manufacturing precision and safety.
4Reliability
If punching depth is increased to ensure gas discharge, then gas discharge reliability is improved, but risk of internal short circuit increases
Solution Approach 1:
The punching mechanism incorporates feedback control that monitors punching depth and automatically stops when the optimal depth is reached. This feedback system ensures the gas discharge hole is deep enough for reliable gas escape while preventing excessive penetration that could cause internal short circuits, thus balancing reliability and safety.
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 enhances gas collection accuracy and convenience by enabling easy battery installation and removal, prevents internal short circuits, and allows adjustable gas concentration for precise analysis, improving the stability and efficiency of gas collection processes.
Implementation Method 1
a punching unit (300) located at an upper end of the outer housing (200) and forming a perforated hole for gas discharge on an upper surface of the battery (11)
Implementation Method 2
gas generated from the battery (11) diffuses into the outer housing (200)
Data Source
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AI summary
The present invention relates to a gas collection device and aims to provide a gas collection device which can capture gas at an appropriate concentration level for batteries with cases made of various standards of rigid materials, particularly for cylindrical batteries.