Battery Module Fixing Rod Assembly for Faster Pack Fabrication
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Solution Overview
Problem
The existing battery pack fabrication process is time-consuming and heavy due to the use of multiple long bolts for fixing battery modules, which complicates the assembly and increases weight.
Innovation Solution
A battery pack design that incorporates a fixing rod inserted into a fixing tube within each battery module, allowing for horizontal fixation and reducing the need for multiple bolts, thereby simplifying the assembly process and reducing weight.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If multiple long bolts are used to fix battery modules, then the fixing strength is improved, but the fabrication time increases and weight increases
Solution Approach 1:
The fixing mechanism is segmented into modular components: a fixing rod with multiple fixing portions that can independently engage with corresponding fixing grooves on different battery modules. This segmentation allows for quicker assembly compared to single long bolts while maintaining fixing strength through distributed contact points.
Solution Approach 2:
The invention extracts the essential fixing function from complex multi-bolt assemblies and implements it through a simplified fixing rod structure. The fixing rod removes unnecessary components while retaining the core function of securing battery modules, thereby reducing fabrication time and weight.
2Strength
If multiple long bolts are used to fix battery modules, then the fixing strength is improved, but the weight increases
Solution Approach 1:
The fixing rod is designed as a lightweight, simplified structure compared to multiple long bolts. While bolts are robust, they are heavier and more material-intensive. The fixing rod achieves sufficient fixing strength with less material, reducing the overall weight of the battery pack.
Solution Approach 2:
Multiple fixing functions that would require separate bolts are merged into a single fixing rod with multiple fixing portions. This consolidation reduces the total weight by eliminating redundant fixing elements while maintaining the necessary fixing strength through the integrated design.
3Reliability
If multiple long bolts are used to fix battery modules, then the fixing reliability is improved, but the device complexity increases
Solution Approach 1:
The fixing rod is segmented into multiple fixing portions, each capable of independently engaging with corresponding grooves. This segmentation provides reliable fixing through distributed contact points while simplifying the overall assembly process compared to coordinating multiple separate bolts.
Solution Approach 2:
The fixing grooves act as intermediaries between the battery modules and the fixing rod. These grooves guide and secure the fixing rod in place, providing reliable fixing while simplifying the assembly process. The groove-rod interface serves as a mediator that ensures proper alignment and secure attachment without requiring complex multi-bolt procedures.
Data Source
AI summary
Disclosed is a battery pack with increased fabrication efficiency. To achieve the object, the battery pack according to the present disclosure includes at least one battery module including a plurality of secondary batteries placed and arranged in a horizontal direction and electrically connected to each other, and a cell frame having a fixing tube configured to fix the plurality of secondary batteries in a predetermined arrangement, the fixing tube being disposed between the plurality of secondary batteries, extending in the horizontal direction and having two open ends, and a fixing rod extending in a direction and inserted into the fixing tube in the horizontal direction.