Battery Module H2S Detection and Neutralizer Housing
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Solution Overview
Problem
Sulfide-based all-solid-state batteries face safety risks due to the generation of hazardous hydrogen sulfide when the electrolyte is exposed to moisture, necessitating a solution to detect and neutralize this gas to prevent leakage and enhance safety in battery modules and packs.
Innovation Solution
A battery module design incorporating a gas sensor to detect hydrogen sulfide leakage and a neutralizer housing portion with components like iron compounds and catalysts, housed in various forms such as pads, pockets, aerosols, or bulbs, to immediately neutralize the gas, ensuring safety by preventing external leakage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a sulfide-based all-solid-state battery is used, then cost and safety are improved, but hydrogen sulfide generation risk increases when exposed to moisture
Solution Approach 1:
The patent introduces a neutralizer containing iron compounds that converts the harmful hydrogen sulfide gas into beneficial iron sulfide solid particles, transforming a safety hazard into a harmless or even beneficial substance. This resolves the contradiction by maintaining the safety advantages of sulfide-based batteries while eliminating their primary harm through chemical conversion.
Solution Approach 2:
The neutralizer acts as an intermediary substance between the hydrogen sulfide gas and the external environment. It intercepts and neutralizes the harmful gas before it can escape the battery module, using iron compounds as a mediating agent to convert the gas into solid iron sulfide particles that can be safely contained or removed.
2Reliability
If a gas sensor and neutralizer system are added to detect and neutralize hydrogen sulfide, then safety is improved, but device complexity increases
Solution Approach 1:
The neutralizer is pre-installed within the battery module structure, positioned to immediately neutralize hydrogen sulfide upon generation. This preliminary preparation eliminates the need for complex real-time detection and response systems, as the neutralization capability is already in place before any harmful gas is produced.
Solution Approach 2:
The patent integrates the neutralizer housing portion with the existing battery module structure, combining multiple functions into a unified design. The neutralizer is housed within the module frame alongside the battery cells and bus bars, merging safety functionality with the structural design rather than adding separate complex systems.
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 integration of a gas sensor and neutralizer system effectively detects and neutralizes hydrogen sulfide, enhancing the safety of the battery module and pack by preventing hazardous gas leakage, thereby improving overall safety and reliability.
Implementation Method 1
a neutralizer inside the neutralizer housing portion. The neutralizer may comprise at least one component selected from the group comprising an iron compound and a catalyst
Data Source
AI summary
A battery module includes a battery cell stack in which a plurality of battery cells are stacked, a module frame that surrounds the battery cell stack, a bus bar frame that covers the portion of the battery cell stack exposed from the module frame, a bus bar that is connected to an electrode lead protruding from the battery cell stack through the bus bar frame, a gas sensor formed on the bus bar frame, a bus bar cover portion that covers the bus bar, and a neutralizer housing portion formed on the bus bar cover portion.