Battery Module Flame-Arresting Structure With Adjustable Gas Exhaust Path
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Solution Overview
Problem
Existing battery modules lack a flexible structure to adjust the movement paths of gas and flames, which can vary in scale due to changes in battery cell voltage and capacity, posing safety risks.
Innovation Solution
A battery module with a variable partition structure using hinges, which creates a gas receiving space with adjustable exhaust paths for gas and flames, allowing for extended movement paths and preventing flames from escaping through the gas outlet.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the module housing is replaced to adjust the movement path length, then the flame movement path can be optimized for different battery configurations, but the device complexity and manufacturing cost increase
Solution Approach 1:
The partition structure is designed to be movable rather than fixed, allowing it to be repositioned along the housing walls to create different movement path lengths. This dynamic adjustment capability enables the same housing to adapt to different battery cell configurations and flame scales without requiring multiple housing designs, thus resolving the contradiction between reliability and device complexity
Solution Approach 2:
The partition structure is divided into multiple segments that can be independently positioned and adjusted. This segmentation allows flexible configuration of the movement path length by arranging segments in different patterns, enabling optimization for various battery capacities and voltages while using a single standardized housing design
2Ease of manufacture
If standardized module housing is used for different battery capacities, then manufacturing cost is reduced, but the movement path length cannot be optimized for different flame scales
Solution Approach 1:
The movable partition structure allows a single standardized housing to adapt to different flame scales by repositioning the partition to create appropriate movement path lengths. This eliminates the need for multiple housing sizes while maintaining optimization for different battery capacities and flame characteristics, thus resolving the contradiction between ease of manufacture and adaptability
Solution Approach 2:
The standardized housing design with movable partition serves multiple functions: it contains flames for small battery configurations, provides extended movement paths for larger batteries, and maintains a consistent manufacturing process. This multi-functionality resolves the contradiction by making one housing design universally applicable across different battery specifications
3Reliability
If the movement path is extended to prevent flame escape, then flame containment is improved, but the gas exhaust efficiency may be reduced
Solution Approach 1:
The partition structure is designed with localized openings or gaps that allow gas to pass through while blocking flames. This creates different flow characteristics in different regions: the main path is extended for flame containment, while localized passages maintain gas exhaust efficiency. The partition material and opening configuration are optimized to differentiate between flame and gas flow properties
Data Source
AI summary
A battery module includes a sub module including a plurality of battery cells, a lower housing to receive the sub module therein and having an opening, a first housing cover coupled to the lower housing, covering the opening of the lower housing, and having a gas inlet, a second housing cover coupled to the first housing cover from above to form a gas receiving space therebetween, and having a gas outlet, and a variable partition structure using hinges installed in the gas receiving space to partition the gas receiving space to define a gas exhaust path to increase a movement path of a flame entering together with gas occurred in the sub module and entering the gas receiving space through the gas inlet.