Secondary Battery Gas Analysis Safety Valve Design
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Solution Overview
Problem
Secondary batteries pose a risk of ignition or explosion due to generated gases, which can damage analysis devices and pose safety hazards during experiments, especially under conditions of overcharge or high temperature exposure, necessitating a real-time gas analysis solution that protects both researchers and equipment.
Innovation Solution
A gas analysis device with a chamber for mounting secondary batteries, an induction medium supply module, and an analysis module, equipped with safety valves to release high-pressure gases and flames externally, ensuring safety and continuous analysis up to the point of ignition or explosion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If real-time gas analysis is performed in a sealed chamber, then measurement precision is improved, but harmful factors accumulate leading to safety risks
Solution Approach 1:
The chamber is segmented into a sealed analysis region and a safety venting region. The safety valve creates a separate pathway that isolates the harmful factors (flame and high-pressure gas) from the analysis module, allowing the chamber to maintain both sealing for accurate measurement and venting capability for safety.
Solution Approach 2:
The safety valve acts as an intermediary component between the sealed chamber and the external environment. It selectively opens to release harmful factors when pressure or temperature thresholds are exceeded, while remaining closed during normal operation to maintain the sealed environment necessary for accurate gas analysis.
2Productivity
If the chamber is completely sealed for continuous analysis, then productivity is improved, but reliability decreases due to explosion risk
Solution Approach 1:
The safety valve is pre-configured with predetermined opening pressures and temperature thresholds. Before dangerous conditions develop, the valve remains closed to maintain sealing for continuous analysis. When thresholds are approached, the valve automatically opens to release harmful factors, preventing catastrophic failure and enabling the system to continue operation after safety events.
3Reliability
If safety valves are added to protect against ignition and explosion, then reliability is improved, but device complexity increases
Solution Approach 1:
The safety valve is designed as a self-regulating component that automatically responds to pressure and temperature conditions without requiring external control systems. The valve opens or closes based on predetermined thresholds, providing passive safety protection that minimizes additional complexity while maximizing reliability.
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 device enables real-time analysis of secondary battery gases up to the point of ignition or explosion, safeguarding researchers and equipment, and allows for safety evaluation experiments, including post-ignition analysis, enhancing experimental efficiency and safety.
Implementation Method 1
a safety valve for releasing flame, dust, and high-pressure gas generated during explosion or ignition of the secondary battery to the outside
Implementation Method 2
an induction medium supply module for generating a flow of induction medium into the chamber
Data Source
AI summary
The present invention relates to a gas analysis apparatus for a secondary battery, the gas analysis apparatus being capable of effectively performing quantitative analysis and qualitative analysis of the gas generated up to the ignition or explosion of the secondary battery.