Battery Pack Gasket Interlock for Vibration-Resistant Sealing
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Solution Overview
Problem
Battery pack sealing gaskets are prone to displacement during vibration, compromising the airtightness of the cavity and leading to reduced sealing performance, increased costs, and weight.
Innovation Solution
Incorporating a sealing gasket with a notch portion that fits with protruding portions on the box bodies, limiting displacement and ensuring better sealing while reducing the size and weight of the battery pack.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a sealing gasket is arranged between the first box body and the second box body to make the cavity sealed, then the airtightness of the cavity is improved, but the sealing gasket is prone to displacement during vibration, reducing airtightness
Solution Approach 1:
The protruding portion on the box body is nested within the notch portion of the sealing gasket, creating a interlocking structure. This nesting design ensures the gasket remains positioned correctly during vibration while maintaining sealing performance.
Solution Approach 2:
The protruding portion and notch portion act as an intermediary mechanical feature between the box body and sealing gasket. This intermediary structure prevents direct displacement of the gasket during vibration while preserving the sealing function.
2Reliability
If the sealing gasket is made larger to improve sealing performance, then the airtightness is enhanced, but the size and weight of the battery pack increase
Solution Approach 1:
The notch portion is nested within the gasket structure, allowing the protruding portion to fit inside it. This nested design provides effective sealing with minimal gasket material, reducing both size and weight while maintaining sealing performance.
Solution Approach 2:
Instead of making the entire gasket larger, the notch portion is added locally at the critical sealing interface. This localized feature provides the necessary displacement prevention without increasing overall gasket dimensions or weight.
3Reliability
If the sealing gasket is made larger to ensure sealing performance, then the airtightness is improved, but the manufacturing cost increases
Solution Approach 1:
The nested protruding portion and notch portion design allows for efficient use of gasket material. This reduces the total amount of sealing material required while maintaining effective sealing, thereby lowering manufacturing costs.
Solution Approach 2:
The notch portion is added only at the critical sealing location rather than increasing the entire gasket size. This localized approach minimizes material usage and manufacturing complexity, reducing costs while maintaining sealing performance.
Data Source
AI summary
This application relates to a vehicle, a battery, and a driving apparatus, where the battery includes: a first box body; a second box body connected to the first box body; a plurality of battery units accommodated inside an enclosure defined by the first box body and the second box body; and a sealing gasket located between the first box body and the second box body whereby the first box body and the second box body are hermetically connected. The first box body and/or the second box body is provided with a first protruding portion, a side wall of the sealing gasket is provided with a notch portion, and the notch portion runs through the sealing gasket along a thickness direction of the sealing gasket, and the first protruding portion extends into the notch portion so that the first protruding portion fits with the notch portion.