Battery Unit Fluid Directing Arrangement for Aerosol Device Degassing
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Solution Overview
Problem
Aerosol generation devices powered by certain batteries can experience safety issues due to leaks or degassing events, which can lead to hazardous chemical release and potential explosions, especially when using lithium-ion batteries with limited vent points, restricting internal battery structures.
Innovation Solution
The use of a pouch battery with multiple possible vent points and a fluid directing arrangement within the device to safely direct any released fluid to a vent hole, accompanied by a seal that breaks during degassing to prevent contamination and allow safe fluid escape, while an absorbent material and battery frame enhance safety and reliability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a lithium-ion battery with a specific preferential vent point is used, then fluid release during degassing is controlled to a single location, but the internal structure of the battery is restricted and safety risks remain due to potential rapid degassing events
Solution Approach 1:
The invention divides the battery housing into multiple segments: a battery receptacle for holding the pouch battery, a fluid directing arrangement with multiple flow paths, and a seal assembly. This segmentation allows the system to handle degassing from multiple battery locations while maintaining structural flexibility and safety.
Solution Approach 2:
The fluid directing arrangement acts as an intermediary component between the battery and the external environment. It captures fluid from multiple possible vent points on the pouch battery and directs it through controlled pathways to the seal assembly, preventing uncontrolled leakage while maintaining battery structure versatility.
2Reliability
If a seal is positioned across the vent hole to prevent contamination during normal use, then device protection is improved, but fluid escape during rapid degassing events may be delayed
Solution Approach 1:
The seal assembly is pre-positioned across the vent hole in a closed state to prevent contamination during normal device operation. The fluid directing arrangement is pre-configured with multiple flow paths that can rapidly redirect fluid to the vent hole when degassing occurs, ensuring both protection and rapid response.
Solution Approach 2:
The battery frame and fluid directing arrangement are designed to accommodate and manage the pressure buildup from degassing events before they occur. The structure includes pathways and spaces that can handle fluid flow, cushioning the transition from sealed protection to controlled venting when needed.
3Adaptability or versatility
If multiple possible vent points are provided on the battery surface, then pouch battery versatility is improved, but the complexity of managing fluid flow from all points increases
Solution Approach 1:
The fluid directing arrangement is designed as a universal system that handles all possible vent points on the pouch battery through a single integrated structure. The battery frame and directing arrangement work together to manage fluid flow from any location on the battery surface, simplifying the overall design while maintaining versatility.
Data Source
AI summary
A battery unit includes a housing having a vent hole; a pouch battery within the housing, an outer surface of the battery including a plurality of possible vent points where a fluid may be released during degassing of the battery; and a fluid directing arrangement within the housing, the fluid directing arrangement being configured to define a fluid flow path from each of the plurality of possible vent points of the battery to the vent hole of the housing. A breakable seal may be positioned across the vent hole of the housing, the seal being configured to be displaced or broken to open the vent hole during degassing of the battery. An aerosol generation device includes a heating chamber and the battery unit, wherein the housing further includes a mouth end and an opposing end, the vent hole disposed at the opposing end.