Cylindrical Battery Gas Collection with Segmented Sealed Chambers
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Solution Overview
Problem
Existing gas collection methods for lithium secondary batteries face challenges in maintaining high-concentration gas collection efficiency and ease of battery installation, removal, and adaptation to various battery specifications, leading to difficulties in manufacturing and analysis.
Innovation Solution
A gas collecting apparatus comprising a lower jig, upper jig, lower housing, and upper housing, with specific jigs and housings designed for cylindrical batteries, ensuring tight fit and easy mounting and removal, and featuring a punching portion for gas discharge and flow paths for efficient gas transfer.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a diffusion chamber with closed space is used to collect gas, then gas concentration is improved, but battery installation and removal becomes difficult
Solution Approach 1:
The diffusion chamber is segmented into an upper chamber and a lower chamber that can move relative to each other. The lower chamber is divided into a battery receiving portion and a gas collection portion. This segmentation allows the battery receiving portion to be separated from the gas collection portion, enabling easy battery installation and removal while maintaining high gas concentration in the sealed upper chamber.
2Measurement precision
If individual diffusion chambers are manufactured for various battery sizes, then gas collection efficiency is improved, but manufacturing complexity and cost increase
Solution Approach 1:
The lower chamber is designed with a universal battery receiving structure that can accommodate batteries of various sizes and specifications. The battery receiving portion can be adjusted or reconfigured to fit different battery types, allowing a single gas collection device to serve multiple battery models without requiring separate diffusion chambers for each battery size.
3Measurement precision
If the battery fits tightly in the diffusion chamber, then gas concentration is improved, but battery removal becomes difficult
Solution Approach 1:
The lower chamber is designed to be movable relative to the upper chamber, allowing dynamic adjustment between a fitted state for gas collection and a separated state for battery removal. The lower chamber can be displaced downward to release the battery, then returned to its original position to maintain the sealed environment for high-concentration gas collection.
Data Source
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AI summary
The present invention relates to a gas collection device. The objective of the present invention is to provide a gas collection device capable of collecting highly concentrated gas for a battery having a case made of a rigid material of various sizes, particularly, for a cylindrical battery.