Battery Gas Collection Chamber With Variable Dilution Volume
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Solution Overview
Problem
Existing gas collecting methods for lithium secondary batteries fail to precisely control gas concentrations, affecting detection sensitivity and quantitative data accuracy in analysis devices due to variable diffusion space sizes and battery specifications.
Innovation Solution
A gas collecting apparatus with a gas diffusion chamber, a variable dilution tank, and a volume control unit that adjusts the dilution space volume to maintain constant gas concentrations, including a punching unit for creating a perforated hole in the battery and a gas delivery flow path to collect gases with controlled concentration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a fixed-size diffusion space is used for gas collection, then the device structure is simple, but the gas concentration cannot be precisely controlled and varies with battery size
Solution Approach 1:
The patent applies the dynamics principle by transforming the fixed diffusion space into a variable dilution space that can be adjusted in volume. The dilution space is equipped with a volume control unit that allows it to expand or contract, enabling dynamic adaptation to different battery sizes and gas generation amounts. This resolves the contradiction by making the diffusion space adjustable rather than fixed, thereby achieving precise gas concentration control while maintaining reasonable structural complexity.
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 variable dilution space with volume control capability allows the system to dynamically adjust the diffusion volume based on the actual gas generation amount. When collecting gas from larger batteries or batteries generating more gas, the dilution space can expand to accommodate the increased volume while maintaining appropriate concentration levels. This resolves the contradiction between collecting sufficient gas quantity and preserving detection-sensitive concentration levels.
3Measurement precision
If a variable dilution space is introduced to control gas concentration, then detection sensitivity is improved, but the device complexity increases
Solution Approach 1:
The patent changes the physical parameter of the dilution space volume from a fixed value to a controllable variable. By introducing a volume control unit that can adjust the dilution space size, the system gains the ability to optimize gas concentration for detection purposes. This parameter change approach resolves the contradiction by providing explicit control over the diffusion volume, thereby improving detection sensitivity while accepting a controlled increase in device complexity.
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
Enables precise control of gas concentrations, ensuring consistent gas delivery to analysis devices, thereby improving detection sensitivity and data accuracy by providing a controllable variable space for gas diffusion during collection.
Implementation Method 1
a hole was made in the secondary battery to diffuse the generated gas into the diffusion space accommodating the secondary battery
Data Source
AI summary
Provided are gas collection devices. Such gas collection devices may be capable of providing improved gas concentrations for an analysis device by controlling the space where gas is diffused when collecting gas generated from a battery.