Battery Unit Deformable Panel Absorbs Cell Expansion
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Solution Overview
Problem
Existing battery units for electric vehicles and hybrid vehicles face durability issues due to unaccommodated expansion of battery cells under applied surface pressure, which can lead to explosions and safety hazards, and require frequent changes in outer components to accommodate varying battery cell thicknesses.
Innovation Solution
A battery unit design featuring cell holders with deformable panels that absorb expansion by being pressed and deformed, providing predetermined surface pressure and incorporating a corrugated plate to push battery cells apart, allowing for adjustable thickness accommodation without changing the entire structure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If battery cells are subjected to surface pressure to maintain durability, then durability is improved, but battery cell expansion causes damage and safety hazards
Solution Approach 1:
A deformable panel is introduced as an intermediary component between the battery cells and the cell holder. The panel absorbs expansion forces through elastic deformation, preventing direct transmission of harmful stresses to the battery cells while maintaining the necessary compression force for durability
Solution Approach 2:
The deformable panel's mechanical properties (elastic modulus, thickness) are optimized to allow controlled deformation under expansion forces while maintaining sufficient rigidity to provide compression. The panel transitions from a rigid constraint to a flexible buffer that adapts to varying expansion conditions
2Adaptability or versatility
If outer components are changed to accommodate varying battery cell thicknesses, then adaptability is improved, but manufacturing cost and device complexity increase
Solution Approach 1:
The deformable panel replaces static, fixed-thickness components with a dynamic element that can elastically deform to accommodate varying battery cell thicknesses. This single dynamic component substitutes for multiple static components of different thicknesses, reducing complexity
Solution Approach 2:
The deformable panel serves multiple functions simultaneously: it provides compression force, absorbs expansion, and adapts to varying thicknesses. This multi-functional component replaces what would otherwise require multiple specialized components, simplifying the overall structure
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 solution increases durability by preventing damage from battery cell expansion and reduces manufacturing costs by sharing components, as the deformable panel and cell holders can be adjusted according to varying battery cell thicknesses without altering the overall structure.
Implementation Method 1
a deformable panel provided between the battery cells of each of the cell holders, connected to the cell holder, and absorbing expansion of the battery cells by being pressed and deformed by surface pressure applied to the battery cells
Data Source
AI summary
Disclosed is a battery unit providing predetermined surface pressure to battery cells and absorbing expansion of the battery cells, thereby increasing durability. Further, by dualizing components for absorbing surface pressure of the battery cells, the battery unit allows manufacturing cost to be reduced because the rest of the components are shared.