Solid-State Battery Chamber Layout for Hydrogen Sulfide Adsorption

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Solution Overview

Problem

Sulfide all-solid-state batteries face issues with hydrogen sulfide gas generation due to moisture exposure, leading to safety hazards and performance degradation from insufficient adsorption substances and potential contact with cell assemblies.

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

VSEngineering Contradiction Analysis

1Reliability

If powdered hydrogen sulfide adsorption substances are used to maximize adsorption effect, then adsorption efficiency is improved, but the risk of powder falling on cell assemblies and affecting electrical performance increases

Engineering Contradiction:

Improvehydrogen sulfide adsorption efficiencyVSAvoidelectrical performance degradation

Core Design Contradiction:

ReliabilityVSObject-affected harmful factors

Solution Approach 1:

The encapsulation member is divided into a first chamber for accommodating the cell assembly and a second chamber for accommodating the adsorbent, with a waterproof and breathable membrane separating them. This spatial segmentation allows powdered adsorbent to be used for maximum adsorption efficiency while preventing contact with the cell assembly, thus resolving the contradiction between adsorption effectiveness and electrical performance protection.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

A waterproof and breathable membrane is introduced as an intermediary between the cell assembly and the powdered adsorbent. This membrane allows hydrogen sulfide gas to pass through for adsorption while blocking the powdered adsorbent from contacting the cell assembly, thereby maintaining both high adsorption efficiency and electrical performance.

Inventive Principle:

Principle #24Intermediary (Mediator)

2Reliability

If sufficient amounts of adsorbed powder are used to ensure complete hydrogen sulfide adsorption, then safety is improved, but the occupation of accommodation spaces increases

Engineering Contradiction:

Improvehydrogen sulfide containment safetyVSAvoidaccommodation space occupation

Core Design Contradiction:

ReliabilityVSVolume of stationary object

Solution Approach 1:

By segmenting the encapsulation member into two chambers separated by a waterproof and breathable membrane, the design allows sufficient adsorbent to be placed in the second chamber without occupying space needed by the cell assembly in the first chamber. This enables safe containment of hydrogen sulfide while maintaining compact overall structure.

Inventive Principle:

Principle #1Segmentation

3Object-affected harmful factors

If the first chamber and second chamber are separated to prevent adsorbent contact with cell assembly, then electrical performance is maintained, but the complexity of the structure increases

Engineering Contradiction:

Improveelectrical performance stabilityVSAvoidchamber separation structure

Core Design Contradiction:

Object-affected harmful factorsVSDevice complexity

Solution Approach 1:

A waterproof and breathable membrane (thin film) is used to separate the first and second chambers. This thin film structure provides effective isolation to prevent adsorbent contact and maintain electrical performance while adding minimal structural complexity compared to rigid separation mechanisms.

Inventive Principle:

Principle #30Flexible shells and thin films

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 effectively adsorbs hydrogen sulfide without affecting battery performance by isolating the adsorbent, preventing contact with the cell assembly and minimizing leakage risks, thus ensuring 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

Methodology Applied

Scientific EffectGas permeability: Permeation

Implementation Method 2

the adsorbent is accommodated in the second chamber and configured to adsorb or eliminate hydrogen sulfide

Methodology Applied

Scientific EffectAdsorption: Adsorption

Data Source

PatentUS20260031452A1All-solid-state battery

Publication Date: 2026.01.29 EVE ENERGY CO LTD

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).