Battery Pack Gasket Structure for Sealing Case Junction Steps
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing battery packs face challenges in achieving optimal waterproof and dustproof performance due to shape discrepancies and assembly errors at the junctions of their cases, leading to potential moisture and dust ingress.
Innovation Solution
A gasket is designed to conform to the shape of the pack case, incorporating elastic materials and structural features like beads and guiders to enhance sealing, particularly at curved and stepped areas, ensuring comprehensive coverage and improved durability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a gasket is used to seal the battery pack, then waterproof and dustproof performance is improved, but assembly errors occur due to step differences at case junctions
Solution Approach 1:
The gasket is designed with high flexibility to conform to the case shape and absorb step differences at junctions. The elastic material allows the gasket to deform and adapt to manufacturing tolerances, ensuring reliable sealing without requiring precise assembly.
Solution Approach 2:
The gasket's physical parameters (elasticity, compressibility) are optimized to accommodate variations in case dimensions and assembly positioning. By changing the material properties and geometric parameters of the gasket, it can compensate for assembly errors while maintaining seal integrity.
2Reliability
If the gasket conforms to the case shape, then sealing performance is improved, but assembly complexity increases
Solution Approach 1:
Instead of creating a complex rigid structure to match the case shape, a flexible gasket is used that naturally conforms to the case contours through elastic deformation. This simplifies the gasket design while achieving the same sealing effect.
Solution Approach 2:
The gasket is divided into multiple sections with different degrees of flexibility and thickness to match specific regions of the case. This segmented approach allows simple manufacturing of individual segments while achieving complex overall conformality when assembled.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The gasket effectively prevents moisture and dust ingress by adapting to the case's shape, maintaining airtightness and enhancing the battery pack's overall sealing performance.
Implementation Method 1
a gasket 200 provided between the case cover 110 and the case tray 120 to prevent the infiltration of moisture or dust from the outside
Implementation Method 2
a bead 251 protruding in a height direction along the length direction of the gasket 200... when the case cover 110 and the case tray 120 are coupled, the shape of the bead 251 is deformed while being pressed by the case cover 110 and the case tray 120
Data Source
Figure 1
Figure 2
Figure 3
AI summary
The present disclosure relates to a battery pack and a device including the same, and a battery pack according to one embodiment of the present disclosure includes at least one battery module; a pack case that includes a case cover for covering the at least one battery module and a case tray coupled with an edge of the case cover; and a gasket that is arranged between the case cover and the case tray, wherein the gasket comprises a gasket flat part that is an area where the gasket extends without curvature, and a gasket corner part that is an area where the gasket is deformed to correspond to the shape of the pack case and is bent while having a curvature.