EV Battery Mounting Bracket for Lateral Collision Deflection
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The existing battery mounting structure for electric vehicles, which increases battery capacity by widening the distance between the tunnel side frame and the floor side frame, makes the battery vulnerable to lateral collisions, and adding energy-absorbing members to mitigate this increases weight and cost.
Innovation Solution
A lower structure for electric vehicles featuring an attachment bracket with a lower wall portion supporting the battery unit, an outer vertical wall portion connected to the floor side frame, and an inner vertical wall portion connected to the tunnel side frame, where the inner vertical wall portion is connected higher than the outer vertical wall portion, allowing the attachment bracket to oscillate and displace the battery unit downward during a lateral collision, thus protecting it without increasing weight or cost.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If the floor side frame is arranged on the vehicle outer side and brought close to a side sill to increase the distance between the tunnel side frame and the floor side frame, then battery capacity is improved, but the battery becomes vulnerable to lateral collision
Solution Approach 1:
The attachment bracket is designed with asymmetric connection heights where the inner vertical wall portion connects higher to the tunnel side frame than the outer vertical wall portion connects to the floor side frame. This creates a dynamic oscillation mechanism that allows the battery to move downward during lateral collisions, transforming the rigid support structure into a dynamic protective system that absorbs collision energy while maintaining battery capacity improvement
Solution Approach 2:
The invention converts the harmful lateral collision force into a beneficial downward motion of the battery through the oscillation mechanism. By designing the attachment bracket with specific asymmetric geometry, the collision energy is redirected to push the battery downward rather than allowing direct lateral impact, thus protecting the battery while maintaining the improved capacity configuration
2Object-affected harmful factors
If an energy absorbing member is provided on the side of the battery to protect against lateral collision, then battery protection is improved, but weight and cost increase
Solution Approach 1:
The attachment bracket is designed to serve multiple functions simultaneously: it supports the battery during normal operation, enables battery capacity improvement through optimized positioning, and provides lateral collision protection through its oscillation mechanism. This multi-functional design eliminates the need for separate energy-absorbing members, thereby avoiding additional weight and cost
Solution Approach 2:
The invention merges the support function and protection function into a single integrated attachment bracket structure. The asymmetric design with inner and outer vertical wall portions at different heights combines the structural support role with the collision energy absorption role, eliminating the need for separate protective components
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 solution enhances battery capacity while protecting the battery during a lateral collision without adding weight or cost, by utilizing the oscillation of the attachment bracket to displace the battery unit downward, reducing interference with other components and maintaining structural rigidity.
Implementation Method 1
the attachment bracket can oscillate like a swing with the connected position between the inner vertical wall portion and the tunnel side frame being a fulcrum
Implementation Method 2
By displacing the outer vertical wall portion toward the vehicle lower side by such a load, the attachment bracket can oscillate like a swing... the battery unit, which is supported by the lower wall portion, can also oscillate to the vehicle lower side
Data Source
AI summary
To simultaneously improve battery capacity and protect a battery during a lateral collision without causing a weight increase, a cost increase, and the like, an electric vehicle includes a battery system arranged below a floor panel and arranged between a tunnel side frame and a floor side frame; and an attachment bracket connecting the battery system to the tunnel side frame and the floor side frame.