Battery Pack Fixing Bar Assembly for Faster Module Mounting
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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 uses a fixing rod inserted into a fixing tube within each battery module to secure the modules, reducing the need for multiple bolts and simplifying the assembly process by using press-fit grooves and press members to stabilize the modules within a pack tray.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple long bolts are used to fix battery modules, then the modules are securely fixed, but the fabrication time increases and weight increases
Solution Approach 1:
The fixing mechanism is segmented into modular components: fixing rods inserted through the battery module into the pack tray, replacing the need for multiple long bolts. This segmentation allows for quicker assembly while maintaining fixation stability.
Solution Approach 2:
The invention extracts and eliminates the unnecessary complexity of multiple long bolts, retaining only the essential fixing function through simpler rods and structural features of the pack tray itself.
2Reliability
If multiple long bolts are used to fix battery modules, then the modules are securely fixed, but the battery pack weight increases
Solution Approach 1:
The invention removes the excess weight of multiple long bolts by using simpler fixing rods and leveraging the pack tray's own structure for support, achieving the same fixation function with significantly reduced weight.
Solution Approach 2:
The pack tray is designed with localized reinforcing ribs and specific structural features at the fixing locations, providing necessary strength only where needed rather than requiring heavy bolts throughout.
3Reliability
If multiple long bolts are used to fix battery modules, then the modules are securely fixed, but the device complexity increases
Solution Approach 1:
The invention extracts and eliminates the complex multi-bolt coupling system, replacing it with simple fixing rods and the pack tray's inherent structural features, dramatically reducing device complexity.
Solution Approach 2:
The pack tray is designed to serve multiple functions: it holds the battery modules, provides structural support through its ribs, and acts as part of the fixing mechanism itself, eliminating the need for separate complex coupling elements.
Data Source
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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.