Battery Box Mounting Layout for Uniform Vehicle Body Rigidity
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Solution Overview
Problem
The connection rigidity between a battery box and a vehicle body is poor due to unevenly distributed fixing points, leading to uneven forces and reduced stability in new energy vehicles.
Innovation Solution
A box design with a top surface divided into a first and second region, where the second region has multiple mounting portions with a controlled distance between adjacent mounting portions (80 mm-500 mm) for uniform distribution and improved connection rigidity, along with a sealing region for enhanced sealing and structural integrity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If multiple mounting portions are provided on the box for connecting to the vehicle body, then the connection rigidity between the box and the vehicle body is improved, but the arrangement of mounting portions may lead to uneven force distribution and reduced structural stability
Solution Approach 1:
The patent applies local quality by specifying different distance ranges for mounting portions based on their position: 80-300mm for mounting portions on the same side and 300-500mm for mounting portions on opposite sides. This localized differentiation ensures optimal force distribution across different regions of the box structure, preventing both excessive stress concentration and insufficient connection rigidity.
2Strength
If the distance between mounting portions is reduced to increase connection points, then the connection rigidity is improved, but the lateral structural forces on the box increase
Solution Approach 1:
The patent employs parameter changes by establishing specific distance ranges (80-300mm for adjacent mounting portions, 300-500mm for opposite mounting portions) that optimize the balance between connection rigidity and lateral force reduction. These parameter specifications ensure that mounting portions are closely spaced enough to provide rigid connections while maintaining sufficient distance to distribute lateral forces effectively across the box structure.
3Strength
If the mounting portions are arranged to ensure uniform force distribution, then the connection rigidity is improved, but the manufacturing and design complexity increases
Solution Approach 1:
The patent applies segmentation by dividing the box top surface into distinct regions with standardized mounting portion arrangements. By segmenting the mounting areas and applying uniform distance standards within each segment, the design achieves force distribution optimization without requiring complex custom arrangements for each mounting location, thus reducing overall design complexity.
Data Source
AI summary
This application relates to a box, a battery, and an electric apparatus. The box has an accommodating cavity for accommodating a battery cell and a top surface facing away from the accommodating cavity; a first region and a second region are formed on the top surface of the box. The second region surrounds the first region, the second region is constructed with multiple mounting portions, and the battery is mounted to an external apparatus through the mounting portions. A distance between geometric centers of orthographic projections of every two adjacent mounting portions in the second region is 80 mm-500 mm.