Solid-State Battery H2S Sensor Layout for Staged Abnormality Response
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Solution Overview
Problem
Existing battery systems fail to detect hydrogen sulfide generation until it fills the battery case, making it difficult to identify small amounts of hydrogen sulfide produced by sulfide-based all-solid-state batteries.
Innovation Solution
A battery system with a first detection unit on the bottom surface and a second detection unit vertically above, along with a control device performing different abnormality processes based on detection results, allows for the detection of small and large hydrogen sulfide amounts, and includes a communication passage with a desulfurization agent to prevent hydrogen sulfide release into the atmosphere.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a single detection unit is used to detect hydrogen sulfide in the battery case, then the device complexity is reduced, but the measurement precision and early detection capability are insufficient
Solution Approach 1:
The detection system is segmented into multiple detection units positioned at different locations within the battery case. This segmentation allows each unit to monitor specific zones, improving overall detection precision and coverage while enabling targeted monitoring of hydrogen sulfide accumulation patterns.
Solution Approach 2:
The detection approach transitions from a single-point detection to multi-dimensional spatial detection by placing sensors at various heights and positions within the battery case. This dimensional expansion enables comprehensive monitoring of hydrogen sulfide distribution and concentration gradients throughout the entire battery enclosure.
2Reliability
If detection is delayed until hydrogen sulfide fills the battery case, then the detection system is simpler, but the reliability and safety response time are reduced
Solution Approach 1:
The detection system performs preliminary detection by positioning sensors to detect hydrogen sulfide at early stages of generation, before the gas fills the entire battery case. This preliminary action enables early warning and preventive measures, significantly improving reliability and safety response time.
Solution Approach 2:
The detection system uses the battery case structure and gas flow patterns as intermediaries to detect hydrogen sulfide at strategic locations. By placing sensors at key positions where hydrogen sulfide accumulates first or flows through, the system achieves reliable detection without requiring complete case filling.
3Object-affected harmful factors
If no desulfurization measure is implemented, then the device complexity is reduced, but the environmental harm from hydrogen sulfide release increases
Solution Approach 1:
The system converts the harmful hydrogen sulfide gas into a beneficial detection signal and subsequently neutralizes it. By detecting hydrogen sulfide presence and triggering desulfurization, the harmful gas is transformed into an early warning indicator that activates protective measures, ultimately preventing environmental release.
Solution Approach 2:
The desulfurization agent creates a chemically inert environment within the battery case by neutralizing hydrogen sulfide. This inert atmosphere prevents the harmful gas from escaping into the environment, effectively eliminating the environmental harm while the added component provides this protective function.
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 reliable detection and management of hydrogen sulfide levels, allowing for timely retreat travel or system shutdown processes in electrified vehicles, ensuring safety and reducing hydrogen sulfide release into the environment.
Implementation Method 1
Since hydrogen sulfide is heavier than air, it stays at the bottom of the battery case. The first detection unit is located on the bottom surface of the battery case.
Implementation Method 2
a desulfurization agent that is located inside the communication passage and that is configured to adsorb hydrogen sulfide
Data Source
AI summary
A battery system includes: a battery case; a battery housed in the battery case, the battery being composed of a sulfide-based all-solid-state battery; a first detection unit located on a bottom surface of the battery case inside the battery case and configured to detect hydrogen sulfide; a second detection unit located vertically above the bottom surface inside the battery case and configured to detect hydrogen sulfide; and a control device. The control device includes an abnormality processing unit configured to perform an abnormality process based on detection results from the first detection unit and the second detection unit. The abnormality processing unit is configured to perform a first abnormality process when hydrogen sulfide is detected only by the first detection unit, and to perform a second abnormality process when hydrogen sulfide is detected by the second detection unit.