Spring Plate Battery Frame for Cell Expansion Control
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Solution Overview
Problem
The addition of a buffer member between adjacent battery modules to prevent direct contact increases manufacturing costs in battery systems.
Innovation Solution
A battery frame comprising a pair of flat spring plates and pressing plates connected by a connecting member, with the pressing plates attached via a second region of the spring plates, allowing for absorption of battery cell expansion and pressure application while preventing outward expansion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a buffer member is added between adjacent battery modules to prevent direct contact, then the reliability of battery module separation is improved, but the manufacturing cost of the battery system increases
Solution Approach 1:
The flat spring plate is designed to automatically deform and absorb expansion forces from battery cells, providing self-service functionality that eliminates the need for separate buffer members. The spring plate's elastic deformation capability allows it to self-adjust to cell expansion while maintaining module separation, thereby improving reliability without increasing manufacturing cost
Solution Approach 2:
The flat spring plate changes its physical state through elastic deformation, transitioning from a flat state to a deformed state that absorbs expansion forces. This parameter change allows the same component to serve dual functions: structural support and expansion buffering, eliminating the need for additional buffer members and reducing manufacturing cost while maintaining reliability
2Stability of the object's composition
If the battery frame is designed to be rigid to prevent outward expansion, then the structural stability is improved, but the ability to absorb cell expansion is reduced
Solution Approach 1:
The flat spring plate transitions from a static rigid structure to a dynamic elastic structure that can deform and recover. This dynamic characteristic allows the plate to adapt to battery cell expansion while maintaining overall structural stability, resolving the contradiction between rigidity and adaptability
Solution Approach 2:
The flat spring plate functions as a flexible element within the rigid battery frame structure. Its elastic deformation capability allows it to absorb expansion forces while the overall frame maintains structural stability, combining flexibility and rigidity in a single component
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 battery frame effectively absorbs cell expansion and applies pressure, reducing the risk of outward expansion and lowering manufacturing costs by eliminating the need for additional buffer members.
Implementation Method 1
each of the flat spring plates includes a first region and a second region, the second region is located inward of the first region in a stacking direction of the battery cell stack... it is possible to absorb the expansion and tolerance of the battery cells and pressurize the battery cells while suppressing the battery frame from expanding outward
Implementation Method 2
the pair of pressing plates are provided between the pair of flat spring plates, the battery cell stack is provided between the pair of pressing plates... pressurize the battery cells
Data Source
AI summary
A battery frame includes a pair of flat spring plates, a pair of pressing plates, and connecting members connecting the pair of flat spring plates. Each of the flat spring plates includes first regions and a second region. The second region is located inward of the first regions in the stacking direction of a battery cell stack. The connecting members are attached to the flat spring plates via the first regions, and the pressing plates are attached to the flat spring plates via the second regions.