Battery Pack Case Align Units and Bus Bars for Vibration Prevention
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Solution Overview
Problem
Existing battery pack assembly operations face challenges in preventing vibration and deviation of components during assembly, and in ensuring uniform delivery of electrical characteristics to external devices.
Innovation Solution
A pack case design featuring align units and bus bars that securely position and electrically connect the battery module, using hook-shaped align units to restrict movement and bus bars to prevent deviation, while allowing for efficient assembly and uniform electrical delivery.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If the inner shape fills the inner space of the pack case at a side portion of the battery module, then vibration of the component during assembly operation is prevented, but the structure becomes vulnerable to vibration between the lower case and upper case
Solution Approach 1:
The pack case is divided into multiple functional components: the lower case, upper case, and a separate inner shape that fits into a groove of the lower case. This segmentation allows each component to perform its specific function - the inner shape provides vibration prevention while the groove structure maintains structural integrity and prevents vulnerability between case layers.
2Ease of manufacture
If the inner shape has a shallow accommodating depth, then assembly is simplified, but the component cannot prevent deviation from the lower case or upper case during assembly operation
Solution Approach 1:
The inner shape features an asymmetric design with a specific groove configuration in the lower case that complements the inner shape's geometry. This asymmetric fit provides precise positioning and prevents deviation during assembly, while the overall structure remains simple enough for efficient manufacturing and assembly operations.
3Stability of the object's composition
If screw-coupling of fixated extension members and pack cover is used, then vibration prevention is achieved, but assembly operation requires repeated screw-coupling and needs a lot of work hours
Solution Approach 1:
The vibration prevention function is extracted from the complex screw-coupling mechanism and integrated into the inner shape that fits into the groove of the lower case. This extraction eliminates the need for repeated screw-coupling operations during assembly, significantly reducing work hours while maintaining effective vibration prevention through the friction-fit groove structure.
Data Source
AI summary
The present disclosure discloses a pack case suitable for preventing vibration or deviation of a battery module on a case during an assembly operation, and a battery pack including the same. The pack case according to the present disclosure includes an align unit and a bus bar disposed at an edge on an inner circumferential surface, and a main case having a connection terminal contacting the bus bar on an outer circumferential surface, and the align unit and the bus bar contact a battery module at a periphery of the battery module seated on the inner circumferential surface of the main case.