All-Solid-State Battery Chamber Layout for H2S Adsorption
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Solution Overview
Problem
Sulfide all-solid-state batteries face issues with hydrogen sulfide gas leakage due to insufficient adsorption substances, which affect electrical performance and pose safety risks, and are sensitive to moisture leading to chemical instability.
Innovation Solution
An all-solid-state battery design with separate chambers for the cell assembly and adsorbent, using a waterproof and breathable membrane to allow gas exchange while preventing liquid or solid contact, ensuring sufficient adsorption and maintaining electrical performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If sufficient powdered hydrogen sulfide adsorption substances are added to the accommodation space, then the adsorption effect is improved, but the risk of adsorbent contacting cell assemblies increases and electrical performance deteriorates
Solution Approach 1:
The patent divides the accommodation space into two separate chambers: a first chamber for the cell assembly and a second chamber for the powdered adsorbent. This segmentation prevents direct contact between the adsorbent and cell assemblies while maintaining sufficient adsorption capacity in the second chamber, thereby resolving the contradiction between adsorption effectiveness and electrical performance protection.
Solution Approach 2:
A waterproof and breathable membrane is introduced as an intermediary between the first chamber and second chamber. This membrane allows hydrogen sulfide gas to pass through for adsorption while blocking the powdered adsorbent from migrating to the cell assembly, thus enabling sufficient adsorption without compromising electrical performance.
2Reliability
If the accommodation space for adsorbent is increased, then hydrogen sulfide adsorption capacity is improved, but the device complexity increases
Solution Approach 1:
The patent employs a nested chamber structure where the second chamber (containing adsorbent) is positioned within or adjacent to the first chamber (containing cell assembly) within the encapsulation member. This nesting arrangement maximizes the adsorbent accommodation space without significantly increasing the overall device footprint or structural complexity.
3Reliability
If the encapsulation member provides sufficient space for both cell assembly and adsorbent, then adsorption effectiveness is improved, but the volume of the battery increases
Solution Approach 1:
The patent utilizes three-dimensional spatial arrangement within the encapsulation member, positioning the first and second chambers in different spatial dimensions and orientations. This dimensional optimization allows sufficient adsorbent volume for effective hydrogen sulfide elimination while minimizing the overall battery volume through efficient space utilization.
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 design ensures effective hydrogen sulfide adsorption without affecting battery performance by isolating the adsorbent, preventing contact with the cell assembly and minimizing moisture exposure, thus enhancing safety and stability.
Implementation Method 1
a waterproof and breathable membrane is disposed between the first chamber and the second chamber... a gas can freely shuttle between the first chamber and the second chamber, the hydrogen sulfide can enter the second chamber... but a liquid or solid cannot pass through the waterproof and breathable membrane
Implementation Method 2
the adsorbent is accommodated in the second chamber and configured to adsorb or eliminate hydrogen sulfide... hydrogen sulfide can enter the second chamber and be adsorbed by the adsorbent
Data Source
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AI summary
Provided is an all-solid-state battery. The all-solid-state battery includes an encapsulation member (10), a cell assembly (20), and an adsorbent. A first chamber (12) and a second chamber (15) that communicate with each other are formed within the encapsulation member (10). The cell assembly (20) is accommodated in the first chamber (12). The adsorbent is accommodated in the second chamber (15) and can adsorb or eliminate hydrogen sulfide. A waterproof and breathable membrane (50) is disposed between the first chamber (12) and the second chamber (15).