Battery Pack Shock Attenuation Using Elastic Module Stoppers
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Solution Overview
Problem
Conventional battery packs fail to adequately protect battery modules from external impacts and vibrations, and using multiple fastening means like bolts and nuts increases pack size and assembly complexity.
Innovation Solution
A battery pack design incorporating elastic first and second stoppers, each with a column-shaped pressing portion, interposed between the module frame and case, along with receiving portions to securely fix these stoppers, providing impact attenuation and easy assembly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If bolts and nuts are used to fix battery modules in the battery pack case, then the battery modules can be secured, but the battery pack size increases due to necessary fastening space
Solution Approach 1:
The invention extracts the fastening function from traditional bolts and nuts, removing the need for separate fastening components and their associated space. The battery module frame itself is designed with integrated fastening structures that directly engage with the battery pack case, eliminating the need for additional fastening space.
Solution Approach 2:
The invention merges the fastening function into the battery module frame structure itself. The frame includes integrated fastening protrusions that combine the structural support and fastening functions into a single integrated component, eliminating the need for separate bolts and nuts.
2Stability of the object's composition
If multiple bolts and nuts are used to secure battery modules, then the battery modules can be firmly fixed, but the assembly process becomes more complex
Solution Approach 1:
The invention removes the complex multi-component fastening system (bolts, nuts, washers, etc.) and replaces it with a simplified integrated fastening structure built into the battery module frame, dramatically reducing assembly complexity.
Solution Approach 2:
The fastening function is merged into the battery module frame structure itself through integrated fastening protrusions, reducing the number of discrete components and simplifying the overall assembly structure.
3Stability of the object's composition
If traditional fastening means are used, then battery modules can be secured, but complete protection from external impact cannot be achieved
Solution Approach 1:
The invention incorporates cushioning elements within the integrated fastening structure that provide impact absorption before external forces can damage the battery modules. The elastic components are pre-positioned to cushion against external impacts.
Solution Approach 2:
The invention merges multiple functions into the fastening structure: mechanical fastening, impact cushioning, and vibration damping. This integrated approach provides comprehensive protection that separate fastening components cannot achieve.
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 design effectively protects battery modules from impacts and vibrations while maintaining a compact size and facilitating easy assembly by using elastic stoppers with column-shaped pressing portions and receiving portions.
Implementation Method 1
a first stopper constituted by a first pressing portion having a column shape made of an elastic material
Implementation Method 2
it is possible to protect a battery module from external impact or vibration
Data Source
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AI summary
The present invention relates to a battery pack having an impact attenuation member, and more particularly to a battery pack including a lower case provided with a space having a predetermined size, an upper case located at an upper part of the lower case to be fastened to the lower case, at least one module frame received in the space of the lower case and a space of the upper case, the module frame being provided with a battery cell receiving recess, and a battery cell received in the battery cell receiving recess, wherein an impact attenuation member configured to protect the module frame from external impact is disposed between an outer surface of the module frame and an inner surface of the lower case.