Battery Cell Brackets for Crash Force Absorption
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional battery module designs lack sufficient tolerance to crash forces, which can cause stress and potential rupture to battery cells in electric vehicles, as they securely fix cells within a single solid component without allowing for movement during collisions.
Innovation Solution
The use of cell fixation brackets that are designed to secure battery cells into position during normal operation and are arranged to break or deform in the event of a collision, reducing the likelihood of cell rupture by providing a degree of movement and absorbing crash forces.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If battery cells are securely fixed within a single solid component, then structural stability during normal operation is improved, but tolerance to crash forces deteriorates
Solution Approach 1:
The solid fixation component is divided into multiple bracket elements that can independently deform or break during crash events. Each bracket is configured to secure one or more battery cells while maintaining the ability to yield under extreme force, thus segmenting the rigid structure into flexible units that balance stability with crash tolerance.
Solution Approach 2:
The brackets are designed with varying material properties and geometric parameters that allow them to maintain rigidity under normal operating conditions but deform or fracture when subjected to crash forces beyond a certain threshold. This parameter optimization enables the brackets to transition from a rigid state during normal use to a deformable state during crashes.
2Manufacturing precision
If battery cells are rigidly secured to prevent movement, then positioning precision is improved, but stress during collisions increases
Solution Approach 1:
The brackets are designed to be dynamically responsive to applied forces. During normal operation, they maintain battery cells in precise positions through rigid fixation. During crash events, the brackets are configured to deform or break, allowing the battery cells to move relative to the module housing, thereby reducing stress transmission to the cells.
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 cell brackets effectively reduce the risk of battery cell rupture during crashes by allowing for movement and absorbing mechanical stress, while maintaining structural integrity during normal operation.
Implementation Method 1
cell fixation brackets that are designed to secure battery cells into position during normal operation and are arranged to break or deform in the event of a collision, reducing the likelihood of cell rupture by providing a degree of movement and absorbing crash forces
Data Source
AI summary
In an embodiment, a battery module includes a first layer of battery cells, and a first set of brackets that are each configured to fix at least one battery cell of the first layer of battery cells into a defined position.