Battery Venting Device with Integrated Filter and Seal
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing venting devices for battery module housings are limited in their adaptability to different assembly situations and require complex technical solutions, failing to provide flexible and safe gas drainage while preventing environmental intrusion.
Innovation Solution
A compact venting device with a rotationally symmetrical hollow body featuring a thread for secure connection to the battery module housing, integrated sealing and filter elements, and a modular design allowing for flexible assembly, including a complementary connection element for varying secondary technical systems.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If separate breathing and venting devices are provided, then reliable gas drainage is achieved, but device complexity increases
Solution Approach 1:
The patent combines the breathing function and venting function into a single integrated venting device. The device includes a breathing passage for normal gas exchange and a venting passage for emergency pressure relief, both integrated within one structural unit that connects to the battery module housing through a single connection element, thereby reducing device complexity while maintaining reliable gas drainage.
Solution Approach 2:
The venting device is designed to perform multiple functions: it allows normal breathing during operation and provides emergency venting when pressure exceeds safety thresholds. The single device structure serves both as a breathing passage and a venting passage, making it a multi-functional component that eliminates the need for separate devices.
2Adaptability or versatility
If the venting device is made adaptable to different assembly situations, then versatility improves, but device complexity increases
Solution Approach 1:
The connection element is designed with universal features including a thread element for secure attachment and a sealing element for pressure-tight connection, allowing the same device structure to be adapted to different battery module housing configurations without increasing device complexity.
Solution Approach 2:
The venting device incorporates a movable closure element that can be in different positions based on pressure conditions, allowing the device to dynamically adapt its function (breathing vs. venting) based on operational requirements rather than requiring multiple static configurations.
3Reliability
If filter elements are used to protect against environmental intrusion, then protection reliability improves, but gas drainage efficiency decreases
Solution Approach 1:
The filter element is strategically positioned at the opening of the venting passage where it provides localized protection against environmental intrusion while maintaining adequate gas flow through its porous structure. The filter is integrated into the connection element rather than blocking the entire passage, allowing protected gas drainage.
Solution Approach 2:
The filter element is made of porous material that allows gas molecules to pass through while blocking larger particles and contaminants. This porous structure provides both protection reliability and maintains gas drainage efficiency by offering low-resistance pathways for gas flow.
Data Source
Figure 1
Figure 2
Figure 3
AI summary
The present invention refers to a venting device (10) for a battery module housing (12), comprising at least: - a first connection element (20) with a first fluid guiding portion (22) and a first thread element (24) for connecting the venting device (10) with the battery module housing (12); - a first sealing element (26); and - a first filter element (30) arranged in the first fluid guiding portion (22); The venting device (10) of the invention is characterized in that the venting device (10) is adapted to be sealed against the battery module housing (12) by the first sealing element (26), if the first connection element (20) is screwed together with the battery module housing (12). The present invention refers to a battery system (54) with the venting device (10) and a vehicle (52), comprising the battery system (54).