Battery Enclosure Vibration Isolators for Multi-Axis Shock Control
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Solution Overview
Problem
Existing vehicle battery enclosures in electric vehicles fail to effectively isolate road vibrations, leading to potential damage and reduced performance of the battery due to unmanaged energy transfer during sudden acceleration or deceleration.
Innovation Solution
The implementation of vibration isolators with coil springs and elastomeric polymer molded portions between the vehicle battery and the enclosure, which manage energy transfer laterally and vertically, isolating the battery from road vibrations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the battery is directly mounted in the vehicle-battery enclosure, then the structural simplicity is improved, but the battery is exposed to road vibrations causing damage and reduced performance
Solution Approach 1:
Vibration isolators are introduced as intermediary components between the battery and the vehicle-battery enclosure. These isolators include elastomeric polymer elements and coil springs that absorb and dampen road vibrations, preventing them from being transmitted to the battery. This mediator approach resolves the contradiction by adding a protective layer that maintains battery reliability without significantly complicating the overall mounting structure.
Solution Approach 2:
The vibration isolators utilize composite material structures combining elastomeric polymers with metal coil springs. The elastomeric polymer provides vibration damping and shock absorption, while the coil springs provide mechanical support and additional vibration isolation. This composite approach enables effective vibration protection while maintaining a relatively simple and compact mounting structure.
2Reliability
If vibration isolators are added between the battery and enclosure, then the battery protection from vibrations is improved, but the device complexity increases
Solution Approach 1:
The vibration isolators are designed to combine multiple functions within a single integrated component. The elastomeric polymer element and coil spring are merged into a unified vibration isolation assembly that provides both vibration damping and mechanical support. This merging reduces the number of separate components needed, thereby limiting the increase in device complexity while maintaining effective battery protection.
Solution Approach 2:
The elastomeric polymer elements in the vibration isolators function as flexible damping elements that deform under vibration and shock loads. These flexible polymer components absorb vibrational energy through elastic deformation, providing effective protection without requiring complex rigid structural elements. The flexibility of the polymer material enables simple yet effective vibration isolation.
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 vibration isolators effectively absorb and isolate road vibrations, enhancing the durability and performance of the vehicle battery by managing energy transfer along multiple axes, thereby reducing potential damage and improving operational stability.
Implementation Method 1
Each of the vibration isolators includes a coil spring and a molded portion encasing the coil spring
Implementation Method 2
The molded portion is elastomeric polymer
Data Source
AI summary
A vehicle includes a vehicle-battery enclosure including an upper plate and a lower plate spaced downwardly from the upper plate. The vehicle includes a vehicle battery between the upper plate and the lower plate. The vehicle includes vibration isolators, including a first vibration isolator and a second vibration isolator, between the vehicle-battery enclosure and the vehicle battery. The first vibration isolator is between the vehicle battery and the upper plate. The second vibration isolator is between the vehicle battery and the lower plate. Each of the vibration isolators includes a coil spring and a molded portion encasing the coil spring. The molded portion is elastomeric polymer.