Battery Pack Fixing Parts for Vibration Resistance
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing battery packs face challenges in maintaining a firm connection between battery modules and the pack case, particularly under conditions of vibration or impact, leading to potential disconnection and safety issues.
Innovation Solution
The battery pack design incorporates chamfer over-pressing preventing parts and module over-pressing preventing parts with protruding and recessed portions, along with a compressible module fixing member, to securely couple battery modules in the top/bottom, left/right, and front/rear directions, utilizing inclined surfaces and bent parts for enhanced stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If screws or bolts are used to couple the pack case and battery modules, then the connection is initially firm, but the connection becomes loose when vibration or impact is applied
Solution Approach 1:
The coupling mechanism is divided into multiple independent fixing parts (first fixing part, second fixing part, third fixing part) that work together to provide multi-directional constraint. Each fixing part addresses specific movement directions, creating a segmented approach to stabilizing the battery module within the pack case.
Solution Approach 2:
The invention transitions from single-direction screw/bolt coupling to multi-dimensional constraint by adding fixing parts that extend in different directions (first in longitudinal direction, second in lateral direction, third in vertical direction). This multi-dimensional approach prevents loosening under vibration and impact from various directions.
2Ease of manufacture
If traditional screw and bolt coupling is used, then assembly is simple, but the battery modules disconnect under vibration or impact
Solution Approach 1:
Multiple fixing functions are merged into an integrated structure where the first fixing part, second fixing part, and third fixing part work together as a unified coupling system. The fixing parts are combined with the pack case structure to provide comprehensive restraint while maintaining assembly simplicity through integrated design.
Solution Approach 2:
The coupling system incorporates dynamic adaptability through the interaction of multiple fixing parts that can respond to different types of stress (vibration, impact, gravitational force). The system dynamically adjusts to maintain firm connection under varying operational conditions while remaining simple to assemble.
3Reliability
If multiple fixing parts are added to prevent disconnection, then connection reliability improves, but device complexity increases
Solution Approach 1:
Each fixing part serves multiple functions: the first fixing part provides longitudinal constraint and vibration resistance, the second fixing part provides lateral constraint and impact resistance, and the third fixing part provides vertical constraint. This multi-functionality reduces the need for separate components for each function, managing complexity while improving reliability.
Solution Approach 2:
The fixing parts are integrated into the pack case structure in a nested manner, where the fixing parts are incorporated within or as extensions of the pack case walls. This nesting approach minimizes additional components and simplifies the overall structure while maintaining the multi-part fixing system for enhanced reliability.
Data Source
AI summary
A battery pack includes a fixing part, and more particularly, a battery pack includes a fixing member and a fixing part, which fix an entire structure in top/bottom, left/right, and front/rear directions. A space defined in the battery pack is filled. As such, the battery pack may provide a power source that is safe against vibration, has a high capacity, and is fast in assembling.