Battery Stack Pressing Jig for Endplate-Free Pack Assembly
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Solution Overview
Problem
The manufacturing process of battery packs without endplates faces challenges in maintaining the stacked structure of batteries within the pack casing, leading to potential collapse during assembly.
Innovation Solution
A battery pack manufacturing apparatus with a main pressing jig and auxiliary pressing jig, featuring movable pressing parts and blocks with specific configurations, is used to grip and maintain the shape of battery stacks within the pack casing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If the battery stack is directly disposed in the pack casing without endplates, then energy density is improved, but the stacked structure collapses without surface pressure application
Solution Approach 1:
The pressing jigs apply surface pressure to the battery stack before the batteries are fully seated in the pack casing, maintaining the stacked structure in advance to prevent collapse during the manufacturing process
Solution Approach 2:
Pressing jigs serve as intermediary devices that temporarily apply surface pressure to the battery stack, enabling structure maintenance without requiring permanent endplate components
2Stability of the object's composition
If a separate pressing action is performed to maintain battery stack shape, then structural stability is improved, but manufacturing process complexity increases
Solution Approach 1:
The pressing action is merged with the battery seating process by integrating pressing jigs into the existing manufacturing apparatus, allowing structure maintenance and assembly to occur in a unified operation rather than separate steps
Solution Approach 2:
The pressing jigs are designed to perform multiple functions: applying surface pressure to maintain stack shape, gripping the battery unit, and facilitating controlled movement during assembly, reducing the need for additional specialized devices
Data Source
AI summary
A battery pack manufacturing apparatus includes a main pressing jig including two main pressing parts configured to be movable toward or away from each other, and an auxiliary pressing jig including two auxiliary pressing parts configured to be movable toward or away from each other, in which the main pressing jig and the auxiliary pressing jig are configured such that the main pressing part passes through the auxiliary pressing part when the main pressing part or the auxiliary pressing part moves in a first direction in a state in which the main pressing part and the auxiliary pressing part are disposed to overlap each other in a second direction intersecting the first direction.