Battery Box Bushing Sealing Structure for Tolerance Gaps
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Solution Overview
Problem
The existing battery frame locking mechanism using bushings and bolts is inadequate due to tolerance issues, leading to unsealed connections and insufficient tightening, which compromises the secure attachment of the battery box to the vehicle.
Innovation Solution
A battery design that includes a bushing with a flange portion, rod portion, and connecting portion, where the flange and rod are sealably connected to the first beam and mounting hole, and the connecting portion is sealably connected to the second beam, utilizing sealing members and riveting structures to eliminate assembly tolerances and ensure a sealed connection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If bushings and bolts are used to lock the battery box frame to the vehicle, then the attachment is simplified, but assembly tolerances cause gaps and insufficient sealing
Solution Approach 1:
A sealing member (rubber or plastic material) is introduced as an intermediary between the bushing and the battery box frame mounting hole. The sealing member fills the gap caused by assembly tolerances, providing reliable sealing while allowing the simple bushing-bolt attachment method to be used.
Solution Approach 2:
The bushing structure is divided into separate functional parts: the bushing body for mechanical attachment, and the sealing member for gap filling and sealing. This segmentation allows each component to optimize its specific function while working together to solve the tolerance problem.
2Device complexity
If traditional bushing and bolt connection is used, then the device complexity is reduced, but connection strength and sealing reliability are insufficient
Solution Approach 1:
The sealing function is merged with the bushing attachment structure by integrating the sealing member into the bushing assembly. The sealing member is positioned within the bushing and the battery box frame mounting hole, creating a combined mechanical attachment and sealing solution that improves reliability without significantly increasing complexity.
Data Source
AI summary
A battery and an electric apparatus are disclosed. The battery includes a box and a bushing, where the box is provided with a mounting beam, that includes a first beam that is provided with a first mounting hole, and a second beam that is provided with a second mounting hole, the bushing includes a flange portion, a rod portion, and a connecting portion, the flange portion and the connecting portion are respectively connected to two ends of the rod portion, the flange portion protrudes from the rod portion, the rod portion passes through the first mounting hole, the connecting portion passes through the second mounting hole. the flange portion is sealably connected to the first beam and/or the rod portion is sealably connected to a wall of the first mounting hole, and the connecting portion is sealably connected to a wall of the second mounting hole.