Solid-State Battery Pack H2S Duct Sensing for Desulfurizer Saturation
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Solution Overview
Problem
Existing battery systems do not effectively sense the saturation of hydrogen sulfide adsorption in desulfurization agents, which can lead to inefficient hydrogen sulfide removal and potential discharge outside the battery case.
Innovation Solution
A battery pack configuration that includes a sulfide-based all-solid-state battery with a communication passage containing a desulfurization agent and a hydrogen sulfide sensor, allowing for detection of hydrogen sulfide saturation levels, with the sensor positioned to reliably detect variations in hydrogen sulfide concentration and trigger notifications for desulfurization agent replacement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If a desulfurization agent is provided in the battery case to adsorb hydrogen sulfide, then hydrogen sulfide removal efficiency is improved, but the ability to sense saturation of the adsorption amount deteriorates
Solution Approach 1:
A hydrogen sulfide sensor is introduced as an intermediary device in the communication passage to detect hydrogen sulfide concentration. This sensor provides indirect information about the desulfurization agent's saturation state without interfering with its adsorption function, thus resolving the contradiction between maintaining removal efficiency and enabling saturation detection.
Solution Approach 2:
The hydrogen sulfide sensor establishes a feedback mechanism by continuously monitoring hydrogen sulfide concentration in the communication passage. When the concentration exceeds a threshold, it indicates desulfurization agent saturation, triggering a replacement notification. This feedback loop enables informed decision-making while preserving the desulfurization agent's primary function.
2Loss of information
If the hydrogen sulfide sensor is provided toward the outside side of the battery case from the desulfurization agent, then saturation sensing capability is improved, but detection reliability deteriorates due to concentration variations
Solution Approach 1:
The sensor placement strategy transitions from a single fixed position to multiple possible positions along the communication passage. By providing several candidate locations with different characteristics, the system can select the optimal position based on specific operational requirements, thus resolving the contradiction between saturation detection capability and detection accuracy.
3Measurement precision
If a narrow passage portion is created in the communication passage for sensor placement, then detection reliability is improved, but device complexity increases
Solution Approach 1:
Instead of redesigning the entire communication passage, the invention introduces a localized narrow passage portion only at the specific sensor placement location. This localized modification minimizes overall structural complexity while achieving the desired concentration uniformity and detection reliability at the critical measurement point.
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 sensing of hydrogen sulfide adsorption saturation, preventing its discharge outside the battery case and prompting timely replacement of the desulfurization agent, thus maintaining efficient hydrogen sulfide management.
Implementation Method 1
a desulfurization agent for adsorbing hydrogen sulfide, provided in the communication passage
Implementation Method 2
a hydrogen sulfide sensor for detecting hydrogen sulfide, provided in the communication passage
Data Source
AI summary
The unit cell is composed of a sulfide-based all-solid-state battery. The battery pack includes a battery module in which a plurality of unit cells is stacked between a pair of end plates. The battery module is housed in a battery case. A duct is attached to the opening formed in the ceiling surface of the upper case. A desulfurization agent is disposed inside the duct, and is configured as a desulfurization unit. A hydrogen sulfide sensor is disposed inside the duct. By detecting the hydrogen sulfide by the hydrogen sulfide sensor, it is possible to sense that the adsorption amount of the hydrogen sulfide of the desulfurization agent is saturated or that there is a possibility of saturation.