Battery Gas Collection with Adjustable Diffusion Volume
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Solution Overview
Problem
Existing gas collection methods for secondary batteries result in variable gas concentrations due to uncontrollable diffusion spaces, affecting detection sensitivity and quantitative data accuracy in analysis devices.
Innovation Solution
A gas collecting apparatus with a gas diffusion chamber, variable dilution tank, volume control unit, and punching unit to control the diffusion space and deliver gas to an analysis device at a constant concentration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a fixed diffusion space is used for gas collection, then the device structure is simple, but the gas concentration varies depending on diffusion space size and battery specification
Solution Approach 1:
The patent applies the dynamics principle by making the diffusion space volume adjustable rather than fixed. The diffusion space is configured to be adaptable to different battery sizes and gas generation amounts, allowing the volume to be optimized for each specific measurement scenario. This resolves the contradiction by enabling the system to maintain simple structure while achieving consistent gas concentration through dynamic volume adjustment.
2Quantity of substance
If the diffusion space size is increased to accommodate larger batteries, then more gas can be collected, but the gas concentration decreases affecting detection sensitivity
Solution Approach 1:
The patent applies parameter changes by adjusting the diffusion space volume as a controllable parameter. The system can modify the diffusion space size to match the gas generation quantity from different battery types, ensuring optimal gas concentration for detection while accommodating varying gas amounts. This allows the system to maintain high detection sensitivity regardless of the total gas quantity collected.
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 a consistent gas concentration for accurate analysis by controlling the diffusion space volume, optimizing gas delivery to analysis devices.
Implementation Method 1
a hole was made in the secondary battery to diffuse the generated gas into the diffusion space accommodating the secondary battery
Implementation Method 2
the volume control unit is configured to be operated to expand the dilution space of the variable dilution tank when a pressure of the gas diffusion space is greater than a set pressure
Implementation Method 3
a gas delivery flow path connected to the gas diffusion chamber to receive gas diffused in the gas diffusion space and deliver the gas to a gas collecting container or a gas analyzer
Data Source
Figure 1~2
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Figure 4b~5
AI summary
The present invention relates to a gas collection device, and aims to provide a gas collection device that is capable of providing gas concentration optimized for an analysis device by controlling the space where gas is diffused when collecting gas generated from a battery.