Battery Pack Elastic Sealing Structure for Dust Gap Reduction
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Solution Overview
Problem
Current battery packs have gaps that allow dust and other impurities to enter, affecting their performance and reliability.
Innovation Solution
A battery pack design that includes a shell, a cell assembly, a front cover, and an elastic member, where the elastic member is arranged to exert pressure on the shell, reducing gaps and preventing the entry of dust and impurities.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the battery pack structure is simplified without additional components, then the device complexity is reduced, but gaps between components increase allowing dust and impurities to enter
Solution Approach 1:
The elastic member utilizes its own elastic properties to automatically push the bottom wall toward the first connecting wall, closing the gap without requiring external control systems or additional actuators. The structure serves itself by using the elastic deformation of the member to maintain the sealed state.
Solution Approach 2:
The elastic member changes its physical state between deformed and restored positions, using parameter changes in its elastic properties to dynamically adjust the gap between the bottom wall and first connecting wall, thereby preventing dust and impurity entry.
2Object-affected harmful factors
If the elastic member is added to reduce gaps and prevent dust entry, then the protection against impurities is improved, but the device complexity increases
Solution Approach 1:
The elastic member functions as a flexible component that can deform and restore, enabling the bottom wall to dynamically adjust its position relative to the first connecting wall. This flexible mechanism effectively seals the gap without requiring complex rigid structures or multiple components.
3Object-affected harmful factors
If the bottom wall is moved closer to the first connecting wall to reduce gaps, then the sealing performance is improved, but the volume of the battery pack decreases
Solution Approach 1:
The bottom wall is transformed from a static component to a dynamic one that can move relative to the first connecting wall. The elastic member enables the bottom wall to dynamically adjust its position, moving closer to seal the gap when needed while maintaining the overall battery pack volume through elastic deformation rather than permanent structural change.
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 design effectively reduces the entry of dust and impurities into the battery pack, enhancing its performance and reliability by minimizing the impact of external contaminants.
Implementation Method 1
The elastic member and the cell assembly are arranged along the first direction. Along the first direction, one side of the elastic member is connected to the shell, and another side of the elastic member is connected to the cell assembly. The elastic member abuts against the first extension portion, so that a force exerted by the elastic member causes the bottom wall to move closer to the first connecting wall
Data Source
AI summary
A battery pack includes a shell, a cell assembly, a front cover, and an elastic member. The cell assembly is disposed in the shell. The front cover is connected to the shell. The elastic member and the cell assembly are arranged along the first direction. along the first direction, one side of the elastic member is connected to the shell, and another side of the elastic member is connected to the cell assembly. The shell includes a bottom wall, and the bottom wall supports the cell assembly. The bottom wall is provided with a first extension portion, the front cover is provided with a first connecting wall, the first extension portion is connected to the first connecting wall, and the elastic member abuts against the first extension portion.