Sulfide-Electrolyte Battery Pack H2S Absorbent Layout
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Solution Overview
Problem
Existing battery packs with sulfide solid electrolytes face challenges in effectively removing hydrogen sulfide, which can be generated due to the reaction of sulfide solid electrolytes with water, and exacerbated by abnormal heat.
Innovation Solution
Incorporating a hydrogen sulfide absorbent, such as zinc oxide, limestone, or dolomite, within the battery pack or in a flow path communicating with the pack, and optionally using a heater powered by the battery to enhance absorption, particularly at higher temperatures.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a sulfide solid electrolyte is used in the battery, then the battery performance is improved, but hydrogen sulfide is generated due to reaction with water
Solution Approach 1:
The patent introduces a hydrogen sulfide absorbent that converts the harmful hydrogen sulfide gas into beneficial products through chemical reaction. The absorbent material transforms the toxic H2S into harmless substances, effectively converting the harmful byproduct of sulfide solid electrolyte operation into a beneficial removal mechanism.
Solution Approach 2:
The hydrogen sulfide absorbent acts as an intermediary substance between the sulfide solid electrolyte and the external environment. It intercepts and reacts with hydrogen sulfide before it can escape or accumulate, serving as a mediating layer that protects the system while allowing the sulfide electrolyte to function.
2Reliability
If the temperature increases to remove hydrogen sulfide, then the absorption capacity improves, but the risk of abnormal heat increases
Solution Approach 1:
The patent utilizes temperature-dependent parameter changes in the hydrogen sulfide absorbent material. The absorbent's absorption capacity changes with temperature, allowing it to operate effectively at battery operating temperatures without requiring external heating, thus avoiding the risk of abnormal heat while maintaining high absorption performance.
3Object-generated harmful factors
If a basic gas is blown to remove hydrogen sulfide, then the hydrogen sulfide concentration decreases, but the device complexity increases
Solution Approach 1:
The patent extracts the hydrogen sulfide removal function from the battery operation system by introducing a separate, passive absorbent material. Instead of actively blowing basic gas through complex piping and control systems, the absorbent is simply placed within the battery structure to autonomously remove hydrogen sulfide through chemical reaction.
Solution Approach 2:
The hydrogen sulfide absorbent provides self-service by automatically reacting with and removing hydrogen sulfide without requiring external control systems, gas supply infrastructure, or active management. The absorbent material autonomously performs the removal function based on its chemical properties and the presence of hydrogen sulfide.
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 proposed solution effectively removes hydrogen sulfide from battery packs, utilizing the high absorption capacities of zinc oxide, limestone, and dolomite across various temperature ranges, thereby mitigating the risks associated with hydrogen sulfide generation.
Implementation Method 1
a hydrogen sulfide absorbent which is housed in the outer container, or arranged in a flow path communicating with the inside of the outer container
Implementation Method 2
the hydrogen sulfide absorbent is selected from the group consisting of zinc oxide, limestone, dolomite, and a combination thereof
Implementation Method 3
a heater which heats the hydrogen sulfide absorbent
Data Source
AI summary
The present disclosure provides a battery pack in which hydrogen sulfide that may be generated from a battery containing a sulfide solid electrolyte can be effectively removed, and a method for removing such hydrogen sulfide in a battery pack. A battery pack 1 of the present disclosure comprises an outer container 10, batteries 20, which are housed in the outer container 10 and each contain a sulfide solid electrolyte, and a hydrogen sulfide absorbent 40, which is housed in the outer container 10, or arranged in a flow path 30 communicating with the inside of the outer container 10. The hydrogen sulfide absorbent is selected from the group consisting of zinc oxide, limestone, dolomite, and a combination thereof. The method for removing hydrogen sulfide in a battery pack according to the present disclosure comprises removing hydrogen sulfide using a hydrogen sulfide absorbent in a battery pack of the present disclosure.