Battery Box Lifting Column Sealing Structure for EV Battery Packs
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Solution Overview
Problem
Current battery pack lifting assemblies fail to meet the sealing performance requirements, compromising the safety and integrity of battery packs in electric vehicles.
Innovation Solution
A battery box design featuring a lifting column integrally formed with the side wall, a fixed sealing block, and multiple sealing members to ensure effective sealing between the lifting column, side wall, and bottom plate, enhancing the structural sealing performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If a lifting column assembly is used to hoist the battery pack, then the battery pack can be well connected and fixed to the vehicle, but the sealing performance of the battery pack deteriorates
Solution Approach 1:
The lifting column assembly is divided into separate functional components: a lifting column integrally formed with the side wall, a fixed sealing block sleeved on the lifting column, and a movable sealing block. This segmentation allows each component to perform its specific function while maintaining overall sealing performance.
Solution Approach 2:
Sealing blocks are introduced as intermediary elements between the lifting column assembly and the battery box components (side wall and bottom plate). These sealing blocks fill the gap created by the lifting column penetration, thereby maintaining sealing performance while allowing the lifting function to operate.
2Reliability
If sealing blocks are added to improve sealing performance, then the sealing performance improves, but the device complexity increases
Solution Approach 1:
The lifting column is integrally formed with the side wall, merging two components into one. This reduces the number of separate parts and simplifies the overall structure while still achieving the lifting function with improved sealing performance.
Solution Approach 2:
The fixed sealing block serves multiple functions: it seals the gap between the lifting column and the side wall, provides structural support, and facilitates the installation of the movable sealing block. This multi-functionality reduces the need for additional separate components.
3Reliability
If sealing components are integrated into the lifting column assembly, then the sealing performance improves, but the ease of maintenance deteriorates
Solution Approach 1:
The sealing system is segmented into a fixed sealing block and a movable sealing block, allowing the movable sealing block to be independently accessed and replaced without disassembling the entire lifting column assembly or battery box.
Solution Approach 2:
The movable sealing block is designed to be replaceable and movable along the lifting column, enabling dynamic maintenance operations. This allows technicians to access and replace sealing components easily while maintaining sealing performance during operation.
Data Source
AI summary
A battery box and a battery pack are provided. The battery box includes a bottom plate and a side wall. The side wall and the bottom plate enclose a space for accommodating a battery and/or an electrical component. The battery box further includes a lifting column integrally formed with the side wall and a fixed sealing block sleeved on the lifting column. The bottom plate is located between the side wall and the fixed sealing block. The side wall is fixedly connected to the bottom plate through the fixed sealing block. A first sealing member for sealing a gap between the fixed sealing block and the bottom plate is arranged between the fixed sealing block and the bottom plate. The fixed sealing block is sealingly connected to the lifting column.