Battery Protective Element for Hybrid Vehicle Side Impact
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Solution Overview
Problem
Existing mechanisms fail to protect lithium-ion batteries in hybrid and electric vehicles from mechanical stresses, particularly in side impacts, leading to potential internal short circuits due to displacement and rotation during collisions.
Innovation Solution
A protective element, such as a sandwich panel or profile section, is positioned between the wheelhouses to absorb and redirect lateral crash loads, preventing inward displacement and rotation of the battery, and can be fixed or freely arranged to maintain optimal positioning and stiffness.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a rigid cross member is used to connect the battery to the wheelhouses, then the battery is protected from lateral compression, but the battery may be displaced relative to the cross member in rear-end collisions
Solution Approach 1:
The protective element incorporates dynamic characteristics through its structural design that allows controlled deformation during impact while maintaining overall stability. The element can absorb energy through controlled bending and deformation in the first region while the second and third regions maintain geometric constraints to prevent battery displacement and rotation.
Solution Approach 2:
The protective element combines different material properties and structural characteristics to achieve both strength and stability. The use of composite construction allows the element to provide rigid support against lateral compression while incorporating features that prevent relative displacement between the battery and the protective structure.
2Strength
If the protective element is rigidly fixed to the wheelhouses, then it provides maximum structural support, but it cannot adapt to vertical displacement in collisions
Solution Approach 1:
The protective element employs different connection strategies at different locations: it can be rigidly fixed at certain points to provide structural support while remaining unfixed or loosely connected at other points to allow vertical adaptability. This local differentiation of connection characteristics enables the element to simultaneously provide stiffness where needed and adaptability where required.
Data Source
AI summary
The invention relates to a motor vehicle, in particular a hybrid automobile or electric vehicle, having a battery that is arranged between two wheelhouses An oblong protective element that resists buckling in the event of a compression load is provided between the wheelhouses in the region of the battery in the event of a side impact.