Dual-Melting-Point Battery Pack Gasket for Controlled Gas Discharge
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional battery packs face the risk of uncontrolled gas discharge during ignition, posing a safety hazard as hot gases can be directed towards vehicle parts and fuel tanks due to uniform sealing materials and forces.
Innovation Solution
A battery pack design featuring a gasket with a first and second sealing part, where the second sealing part has a lower melting point than the first, allowing controlled gas discharge through specifically positioned channels to prevent discharge towards critical vehicle components.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a uniform rubber gasket is formed around the battery pack case, then the sealing performance is improved, but the gas discharge control is worsened
Solution Approach 1:
The gasket is divided into different sections with different materials: a first gasket section made of heat-resistant rubber and a second gasket section made of non-heat-resistant rubber. This local differentiation allows the heat-resistant section to maintain sealing during ignition while the non-heat-resistant section can be controlled to open for directional gas discharge.
Solution Approach 2:
The gasket is segmented into multiple functional sections with distinct properties. The first gasket section (heat-resistant) and second gasket section (non-heat-resistant) are positioned at different locations around the battery pack case, enabling differentiated responses to thermal events and controlled gas discharge pathways.
2Duration of action of stationary object
If the gasket is made of heat-resistant material throughout, then the sealing durability is improved, but the gas discharge controllability is worsened
Solution Approach 1:
Different sections of the gasket have different thermal resistance properties. The first gasket section uses heat-resistant material for durable sealing, while the second gasket section uses non-heat-resistant material that can be controlled to open at specific temperatures for directional gas discharge away from critical components.
3Adaptability or versatility
If the gasket is made of non-heat-resistant material throughout, then the gas discharge controllability is improved, but the sealing reliability is worsened
Solution Approach 1:
The gasket combines heat-resistant and non-heat-resistant materials in specific sections. The non-heat-resistant second gasket section provides controlled gas discharge capability, while the heat-resistant first gasket section maintains overall sealing reliability during normal operation and thermal events.
4Ease of manufacture
If a uniform sealing force is applied around the case, then the manufacturing simplicity is improved, but the gas discharge direction control is worsened
Solution Approach 1:
The gasket applies different material properties at different locations to control gas discharge direction. The first gasket section with heat-resistant material and the second gasket section with non-heat-resistant material create predetermined discharge pathways that direct hot gases away from critical vehicle components while maintaining relatively simple manufacturing processes.
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
The solution enables controlled gas discharge away from vehicle parts, enhancing the safety and stability of the battery pack by directing hot gases externally, thereby protecting critical components.
Implementation Method 1
a melting point of the second sealing part is lower than the melting point of the first sealing part
Data Source
AI summary
A battery pack includes: a lower case and an upper case; and an annular gasket formed between the lower case and the upper case to seal between the cases, wherein the gasket includes first and second sealing parts connected to each other, and wherein a melting point of the second sealing part is lower than the melting point of the first sealing part.