Solid-State Battery H2S Detection With Two-Threshold Heating
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Solution Overview
Problem
Sulfide-based all-solid-state batteries can generate hydrogen sulfide gas inside the battery case, leading to measurement errors due to reaction with miscellaneous gases, resulting in unnecessary control measures.
Innovation Solution
A battery system comprising a battery unit, a heater unit, and a sensor unit, where the heater is activated when the sensor measures a value above a first threshold, and responsive control is executed only when the value exceeds a second, higher threshold, to accurately determine and manage hydrogen sulfide gas generation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a sensor is used to detect hydrogen sulfide gas concentration, then the ability to detect hydrogen sulfide gas is improved, but measurement errors increase due to reaction with miscellaneous gases
Solution Approach 1:
The heater unit is activated in advance when the sensor detects a hydrogen sulfide gas concentration exceeding the first threshold value. This preliminary heating action promotes the generation of hydrogen sulfide gas from the sulfide-based all-solid-state battery before the final determination is made, ensuring that if hydrogen sulfide is being generated, its concentration will increase further and be confirmed by the sensor.
Solution Approach 2:
The system dynamically adjusts the detection process by implementing a two-stage threshold system. The first threshold triggers preliminary heating action, while the second (higher) threshold confirms actual hydrogen sulfide generation. This dynamic approach allows the system to adapt to varying gas concentration conditions and distinguish between miscellaneous gases and actual hydrogen sulfide generation.
2Reliability
If control measures are executed when sensor value exceeds threshold, then hydrogen sulfide gas generation is addressed, but unnecessary control actions occur due to measurement errors
Solution Approach 1:
The heater unit is activated in advance when the sensor detects a hydrogen sulfide gas concentration exceeding the first threshold value. This preliminary heating action promotes the generation of hydrogen sulfide gas from the sulfide-based all-solid-state battery before the final determination is made, ensuring that if hydrogen sulfide is being generated, its concentration will increase further and be confirmed by the sensor.
Solution Approach 2:
The system implements a feedback mechanism where the sensor continuously monitors hydrogen sulfide gas concentration. When the concentration exceeds the first threshold, the heater is activated, and the system continues to monitor until the concentration either exceeds the second threshold (confirming hydrogen sulfide generation) or returns to normal (indicating miscellaneous gases). This feedback loop ensures accurate control execution.
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
This approach prevents excessive handling of hydrogen sulfide gas by ensuring accurate detection and reducing unnecessary control actions, without requiring high-precision sensors, thus optimizing battery system operations.
Implementation Method 1
The heater unit is configured to heat the battery unit
Implementation Method 2
The sensor unit is configured to measure a hydrogen sulfide gas concentration inside the battery case
Data Source
AI summary
A battery system includes a battery unit, a heater unit, and a sensor unit. The battery unit is accommodated in a battery case and includes sulfide-based all-solid-state batteries. The heater unit is configured to heat the battery unit. The sensor unit is configured to measure a hydrogen sulfide gas concentration inside the battery case. The heater unit is started to be driven when a measured value of the sensor unit becomes greater than the first threshold value. After starting the driving of the heater unit, when the measured value becomes greater than the second threshold value that is higher than the first threshold value, a responsive control is executed to deal with generation of the hydrogen sulfide gas from the sulfide-based all-solid-state batteries.