Battery Pack Attachment Structure for Air Bubble Venting
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Solution Overview
Problem
Existing battery packs face issues with air bubbles forming between the attachment area and the attachment object, leading to deteriorated appearance and attachment strength due to temperature changes, which can compromise the stability and condition of the attachment object.
Innovation Solution
The battery pack design incorporates a recessed attachment area with through-portions and engraved patterns to create air flow paths, along with auxiliary support portions and moisture prevention lines, ensuring stable attachment and preventing air bubble formation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a flat attachment area is used, then the manufacturing process is simple, but air bubbles form between the attachment area and attachment object leading to deteriorated appearance and attachment strength
Solution Approach 1:
The attachment area incorporates localized engraved patterns and through-portions at specific positions rather than uniformly across the entire surface. These localized features create air flow paths precisely where needed to prevent air bubble accumulation, while maintaining a relatively simple overall structure. The engraved patterns are positioned to guide air evacuation during the attachment process, resolving the contradiction between structural simplicity and attachment reliability.
Solution Approach 2:
The design extracts air from the attachment interface by providing dedicated escape paths through engraved patterns and through-portions. By creating these extraction channels, air bubbles are removed from the attachment area before final bonding occurs, preventing the formation of voids that would compromise attachment strength and appearance, thus improving reliability without requiring a completely complex structure.
2Productivity
If air bubbles are allowed to form during attachment, then the attachment process is faster, but the appearance and attachment strength deteriorate due to temperature changes
Solution Approach 1:
The engraved patterns and through-portions are pre-designed into the attachment area structure before the attachment process begins. This preliminary configuration of air flow paths ensures that air bubbles are automatically guided toward escape routes during attachment, preventing their accumulation without requiring additional steps or slowing down the process. The air evacuation capability is built-in from the start, maintaining both speed and quality.
3Reliability
If the attachment area is recessed deeply to prevent air bubbles, then air bubble formation is reduced, but moisture infiltration risk increases
Solution Approach 1:
The attachment area uses a moderate recess depth combined with localized engraved patterns rather than a uniformly deep recess. The engraved patterns are positioned to provide air flow paths while the recess depth is optimized to balance air bubble prevention with moisture protection. This localized approach to creating air flow channels achieves effective air evacuation without creating deep cavities that would trap moisture, thus resolving the contradiction between air bubble prevention and moisture infiltration risk.
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
This design effectively prevents air bubbles and moisture infiltration, maintaining the appearance and attachment strength of the battery pack, enhancing stability and durability.
Implementation Method 1
the engraved pattern may be configured to provide an air flow path between the attachment object and the attachment area
Implementation Method 2
the through-portion may be formed to penetrate the attachment area and provide fluid communication with an inner area of the housing
Data Source
AI summary
A battery pack includes a battery cell accommodated in a housing and the housing including an attachment area recessed to provide a position on a surface of the housing where an attachment object is attached. The attachment area may include a through-portion and an engraved pattern. The through-portion may be formed to penetrate the attachment area and be in fluid communication with an inner area of the housing. The engraved pattern may be configured to provide an air flow path between the attachment object and the attachment area.