Vehicle Body Reinforcing Structure for Battery Pack Rigidity Loss
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Solution Overview
Problem
The installation of battery packs in electric vehicles leads to a lack of rigidity in the vehicle body, causing imbalance and instability during turning.
Innovation Solution
A vehicle body reinforcing structure is introduced, featuring first and second reinforcing members with cross-connection and reinforcing portions that extend along the side surface of the battery pack, connected to the vehicle body to enhance structural strength and rigidity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If a battery pack is installed at the bottom portion of the vehicle to provide power, then the electric vehicle achieves energy saving and emission reduction, but the vehicle body rigidity deteriorates causing vehicle imbalance during turning
Solution Approach 1:
The reinforcing structure is divided into multiple segments: first reinforcing members extending in the front-rear direction with cross connection portions, and second reinforcing members extending in the width direction with reinforcing portions. These segmented elements work together to restore vehicle body rigidity without compromising the battery pack installation
Solution Approach 2:
The reinforcing members are arranged in three-dimensional space around the battery pack, with some members positioned above, below, and at different heights. This spatial arrangement creates a rigid framework that compensates for the rigidity loss caused by the battery pack installation
2Stability of the object's composition
If the vehicle body rigidity is improved by adding reinforcing structures, then the vehicle stability during turning is enhanced, but the device complexity increases
Solution Approach 1:
The reinforcing members serve multiple functions: they enhance vehicle body rigidity, provide structural support for the battery pack, and contribute to overall vehicle stability. This multi-functionality reduces the need for additional separate components
Solution Approach 2:
The reinforcing structure is integrated with the battery pack installation, where the reinforcing members are positioned to work in conjunction with the battery pack mounting structure, combining structural reinforcement with powertrain integration
Data Source
AI summary
A vehicle body reinforcing structure installed in a vehicle including a vehicle body and a battery pack provided in the vehicle body includes a first reinforcing member including at least a cross connection portion; and a second reinforcing member including at least a reinforcing portion arranged to extend along a longitudinal direction of a side surface of the battery pack, wherein both the first reinforcing member and the second reinforcing member are arranged along the longitudinal direction of the side surface of the battery pack, and the two ends of the first reinforcing member and the second reinforcing member are connected to the vehicle body respectively.