Electric Vehicle Battery Impact Load Reduction Structure
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Solution Overview
Problem
Existing impact load reduction structures for electric vehicles often transmit large impact loads directly to batteries during collisions, potentially causing damage due to the secure fixation of the vehicle body frame to the battery support structure.
Innovation Solution
An impact load reduction structure comprising a battery frame, a load reduction frame, and a load absorber, where the load absorber is positioned between the load reduction frame and the battery frame to absorb and distribute impact loads, with the load absorber having lower rigidity than the battery frame and higher rigidity than the load reduction frame, effectively reducing the impact load transmitted to the batteries.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If the vehicle body frame is securely fixed to the battery support structure, then the battery frame stability is improved, but the impact load transmitted to the battery increases during collision
Solution Approach 1:
A load absorber is introduced as an intermediary component between the load reduction frame and the battery frame. This load absorber selectively absorbs impact forces during collision while maintaining normal operational stability, resolving the contradiction between stable fixation and impact protection
Solution Approach 2:
The rigidity of the load absorber is specifically designed to be lower than both the battery frame and the load reduction frame. This parameter differentiation allows the load absorber to deform under impact loads while maintaining structural integrity during normal operation, achieving both stability and impact reduction
2Force
If the load absorber has lower rigidity than the battery frame, then the impact load absorption is improved, but the load absorber may deform excessively under normal operating conditions
Solution Approach 1:
The rigidity parameter of the load absorber is precisely controlled to be lower than the battery frame and load reduction frame but sufficient to maintain structural integrity during normal operation. This selective rigidity differentiation enables the load absorber to function as intended during collision while preventing excessive deformation during normal use
3Force
If the load reduction frame has lower rigidity than the battery frame, then the impact load distribution is improved, but the load reduction frame may lack sufficient support for the battery
Solution Approach 1:
The rigidity hierarchy is established with the load reduction frame having lower rigidity than the battery frame, but the load absorber having even lower rigidity. This gradient structure allows the load reduction frame to distribute impact forces effectively while the battery frame maintains sufficient support capability for normal operational loads
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
The structure effectively reduces the impact load transmitted to the batteries by absorbing and distributing the force, preventing damage and allowing for reduced weight and simplified assembly by not requiring secure fixation of the battery frame to the vehicle body frame.
Implementation Method 1
The load absorber is disposed between the load reduction frame and the battery frame and absorbs the impact load to be transmitted from the load reduction frame to the battery frame
Data Source
AI summary
An impact load reduction includes: a crash area that is disposed in a front section of the electrically-powered vehicle and configured to deform at a collision; a battery frame that is disposed rearward of the crash area and fixed to a vehicle body frame of the electrically-powered vehicle, the battery frame being configured to support the battery and be engaged with the vehicle body frame in accordance with an inertia force of the collision to be supported from frontward; a load reduction frame that extends in a front-rear direction on a front side of the battery frame and that is disposed in a substantially same plane as the battery frame, the load reduction frame having lower rigidity than the battery frame; and a load absorber that is disposed between the load reduction frame and the battery frame and that has lower rigidity than the battery frame.