Drive Battery Partition Structure for Gastight Outgassing Separation
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Solution Overview
Problem
Existing vehicle drive batteries face challenges in maintaining refractory and gastight separation between partial regions, particularly during cell outgassing, which affects short-circuit resistance.
Innovation Solution
A drive battery design incorporating a composite component with a fiber-reinforced plastic profile element, a heat-resistant compressible foam body, and a silicone mat, which separates the battery's partial regions, providing refractory and gastight sealing through a clipping and adhesive bonding mechanism.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a simple partition structure is used between partial regions, then device complexity is reduced, but refractory and gastight separation capability deteriorates
Solution Approach 1:
The partition structure uses a composite component combining fiber-reinforced plastic profile element, heat-resistant compressible foam body, and silicone mat to achieve both structural simplicity and superior refractory/gastight separation capability. The fiber-reinforced plastic provides mechanical strength while the foam body and silicone mat provide sealing and heat resistance.
Solution Approach 2:
Different materials are used in different regions of the partition structure: fiber-reinforced plastic for structural framework, compressible foam for gap filling and compression sealing, and silicone mat for gastight sealing. Each material is optimized for its specific function to achieve overall separation reliability.
2Productivity
If automated assembly mechanisms are used, then productivity is improved, but manufacturing precision requirements increase
Solution Approach 1:
The partition structure is divided into separate modular components (profile element, foam body, silicone mat) that can be independently manufactured and assembled. The profile element with clipping mechanisms provides standardized interfaces for automated assembly, while the modular design allows each component to be produced with standard tolerances.
Solution Approach 2:
The compressible foam body is designed to change its physical parameters (compression ratio, density) during assembly and operation. This parameter change accommodates variations in manufacturing tolerances while maintaining sealing effectiveness, enabling automated assembly without requiring extremely tight precision.
3Reliability
If a robust sealing structure is used to manage outgassing, then short-circuit resistance is improved, but device complexity increases
Solution Approach 1:
The compressible foam body acts as an intermediary element between the rigid profile structure and the silicone mat sealing layer. It provides a compliant interface that accommodates thermal expansion and structural movements while maintaining the gastight seal, thereby improving short-circuit resistance without requiring a complex multi-layer rigid structure.
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 enhances the battery's ability to manage cell outgassing by ensuring stable and automated assembly, maintaining structural integrity and sealing, thereby optimizing short-circuit resistance and improving safety.
Implementation Method 1
a foam body of a compressible foam
Implementation Method 2
foam body of a compressible foam
Implementation Method 3
adhesive bonding mechanism
Data Source
AI summary
A drive battery for a vehicle, in particular a motor vehicle, includes a housing, which has a plurality of partial regions, wherein one or more cell modules are respectively arranged in a first partial region and in a second partial region. A composite component is arranged between the first partial region and the second partial region in order to separate the partial regions. The composite component has a profile element of fiber-reinforced plastic, a foam body of a compressible foam and/or a silicone mat.