Battery Stack Venting Structure With Rubber Tubes for Vibration Damping
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Solution Overview
Problem
Existing battery stack designs face challenges in effectively discharging hydrogen gas generated inside battery cells while attenuating vibration in the height direction due to poor elasticity and extendibility of safety valve attaching portions.
Innovation Solution
A battery structure body with a smoke discharging chamber connected via rubber tubes extending in the up-down direction, which discharge gas to the outside and function as dampers to attenuate vibration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of moving object
If bellows portions are provided in the exhaust pipe to enable axial extension, then the exhaust pipe can expand in the axial direction, but the safety valve attaching portions have poor elasticity and extendibility in the height direction, making it difficult to attenuate vibration
Solution Approach 1:
The exhaust system is divided into separate functional segments: the exhaust pipe with bellows for axial expansion, and the safety valve attaching portions with rubber hoses for height direction flexibility. This segmentation allows each part to optimize its elastic properties for its specific function without compromising the other.
Solution Approach 2:
A rubber hose is introduced as an intermediary component between the safety valve attaching portions and the exhaust pipe. This rubber hose provides the necessary elasticity and extendibility in the height direction, mediating the connection between the rigid exhaust pipe system and the safety valves while enabling vibration attenuation.
2Stability of the object's composition
If safety valve attaching portions are made rigid to ensure secure connection, then connection stability is improved, but elasticity and extendibility in the height direction deteriorate, preventing vibration attenuation
Solution Approach 1:
A rubber hose is used to create a flexible connection between the safety valve attaching portions and the exhaust pipe. This flexible shell maintains secure connection while providing the necessary elasticity and extendibility in the height direction to attenuate vibrations from the battery stack.
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
Effectively discharges gas generated inside battery cells to the vehicle cabin and reduces vibration in the height direction by using rubber tubes as dampers.
Implementation Method 1
the rubber tubes function as dampers, and vibration of the battery stack in the height direction is attenuated
Implementation Method 2
the rubber tubes can be more effectively compressively deformed in the up-down direction
Data Source
AI summary
There is provided a battery structure body including: a battery stack having a plurality of battery cells stacked in a thickness direction of the battery cells, each of the battery cells having a safety valve on an upper wall of the battery cell; a smoke discharging chamber disposed on an upper side above the battery stack and connected to a smoke discharging duct communicating with an outside of a vehicle cabin; and a plurality of rubber tubes that connects the respective safety valves of the battery cells to the smoke discharging chamber, the rubber tubes extending in an up-down direction.