Battery Module Gas Sensing and H2S Neutralization Structure
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Solution Overview
Problem
Sulfide-based all-solid-state batteries face the risk of generating hazardous hydrogen sulfide when exposed to moisture, necessitating a solution to prevent its leakage and ensure safety.
Innovation Solution
A battery module design incorporating a gas sensor adjacent to the bus bar to detect hydrogen sulfide leakage, coupled with a neutralizer housing portion that houses components like iron compounds and catalysts to neutralize the gas, ensuring immediate detection and neutralization.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If a battery module is designed to accommodate multiple battery cells, then the battery module can achieve higher energy density and better thermal management, but the structural complexity and manufacturing difficulty increase
Solution Approach 1:
The battery module is segmented into multiple battery cell groups arranged in a structured configuration. Each group can be independently managed for thermal control and electrical connection, allowing the system to achieve high energy density while maintaining manageable structural complexity through modular organization
Solution Approach 2:
The battery module structure is designed with multi-functional components that serve multiple purposes: structural support, thermal management pathways, and electrical connection points. This universal design approach allows the same structural elements to fulfill multiple functions, reducing overall device complexity while accommodating multiple battery cells for high energy density
2Quantity of substance
If battery cells are tightly packed to increase energy density, then space utilization improves, but heat dissipation becomes more difficult and safety risks increase
Solution Approach 1:
The battery module employs local quality variations in the structural design, with different regions having different thermal conductivity properties. Heat dissipation pathways are strategically designed with higher thermal conductivity materials in critical areas, while maintaining tight packing in other regions, thus achieving both high space utilization and effective heat dissipation
Solution Approach 2:
Thermal management components are introduced as intermediary elements between tightly packed battery cells. These intermediaries facilitate heat transfer from the battery cells to the cooling system, enabling dense packing while maintaining effective heat dissipation through the intermediary thermal pathways
3Reliability
If traditional battery module designs are used, then manufacturing processes are well-established, but production efficiency and assembly speed are limited
Solution Approach 1:
Battery cells are pre-assembled into groups with pre-installed connection terminals and thermal management interfaces before being integrated into the final module. This preliminary action allows for standardized, rapid assembly of complete battery modules, significantly increasing production efficiency while maintaining manufacturing reliability through proven assembly processes
Solution Approach 2:
Multiple components are merged into integrated assemblies: electrical connection terminals are combined with structural support elements, and thermal management interfaces are integrated into the module housing. This merging reduces the number of separate assembly steps, thereby increasing assembly speed while maintaining manufacturing maturity through standardized integrated components
Data Source
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AI summary
A battery module according to one embodiment of the present disclosure 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.