Battery Pack Housing Structure for Cell Vibration Restraint
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Solution Overview
Problem
Existing battery packs face challenges in maintaining mechanical coupling and fixing force against forward-rearward and leftward-rightward vibrations, require additional fixing components increasing cost and volume, and are vulnerable to external impacts.
Innovation Solution
A battery pack design featuring protrusions on cell cartridges fitting into recessed portions of a housing, with spaced vertical plates and integrated fastening holes, allowing secure fixation and impact protection without additional space or components.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If additional fixing holders or screw holes are used to secure battery cells, then vibration resistance and mechanical coupling are improved, but device complexity, cost, and volume increase
Solution Approach 1:
The patent combines the fixing function with the housing structure itself by integrating recessed portions directly into the housing. This eliminates the need for separate fixing holders or additional screw holes, as the housing's own structure provides the securing mechanism for battery cells while maintaining vibration resistance.
Solution Approach 2:
The housing serves multiple functions: it provides structural support, contains battery cells, and simultaneously acts as the fixing mechanism through its integrated recessed portions. This multi-functionality eliminates the need for dedicated fixing components, reducing overall device complexity while maintaining reliability.
2Reliability
If additional fixing components are added to prevent cell movement, then mechanical coupling is improved, but production cost increases
Solution Approach 1:
The fixing structure is merged into the housing design, eliminating the need for separate fixing components. This integration reduces the number of parts that need to be manufactured, stored, and assembled, thereby lowering production costs while maintaining mechanical coupling reliability.
Solution Approach 2:
The housing performs multiple functions including structural support, cell containment, and mechanical coupling through its integrated recessed portions. This eliminates the need for additional dedicated fixing components, reducing bill of materials costs and simplifying the manufacturing process.
3Reliability
If more fixing structures are implemented to secure battery cells, then vibration resistance is improved, but product volume increases
Solution Approach 1:
The fixing structures are merged into the housing's own geometry through integrated recessed portions. This eliminates the need for additional external fixing components that would increase product volume, while still providing adequate vibration resistance through the housing's structural design.
4Object-affected harmful factors
If spaced vertical plates are used to protect cell cartridges, then impact resistance is improved, but space utilization is reduced
Solution Approach 1:
The protective vertical plates are merged with the housing structure, forming an integrated design. The housing itself provides the protective function through its spaced vertical plates and recessed portions, eliminating the need for separate protective components that would consume additional space.
Data Source
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AI summary
The present invention relates to a battery pack, and more particularly to a battery pack including a housing (300) having a predetermined space portion, an end plate (200) received in the space portion, the end plate including a horizontal plate (210) located parallel to the bottom surface of the housing (300) and a pair of vertical plates (220) extending from opposite edges of the horizontal plate (210) in a perpendicular direction, and a plurality of cell cartridges (100) received in the end plate (200) so as to be vertically disposed, wherein a plurality of pairs of first recessed portions (310) facing each other is provided in the inner surface of the housing (300), and protrusions (110) configured to be coupled to the first recessed portions (310) are provided on opposite ends of the cell cartridges (100) in a thickness direction.