Battery Module Compression Plates for Consistent Cell Bracing
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Solution Overview
Problem
Existing battery modules struggle to maintain consistent bracing conditions for individual cells during different operating states, affecting performance and reliability.
Innovation Solution
A battery module design with variable spacing between compression plates and adjustable compressive force, using movable and immovable compression plates and elastic elements to accommodate cell expansion and contraction, ensuring consistent pressure on battery cells.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the spacing between compression plates is fixed, then the structural simplicity is maintained, but the bracing conditions cannot be adjusted for different operating states
Solution Approach 1:
The compression plates are designed with movable mounting on vehicle supports, enabling dynamic adjustment of spacing between plates. This allows the bracing system to adapt to different operating states (charging/discharging) while maintaining structural integrity, resolving the contradiction between adaptability and complexity.
Solution Approach 2:
The patent enables parameter changes in the spacing between compression plates to accommodate cell expansion and contraction. By varying the spacing parameter within a specific range, the system maintains consistent bracing conditions across different operating states without requiring complex active control mechanisms.
2Adaptability or versatility
If compression plates are rigidly fixed, then structural stability is maintained, but cell expansion and contraction cannot be accommodated
Solution Approach 1:
The compression plates are movably mounted on vehicle supports rather than being rigidly fixed, enabling them to accommodate cell volume changes while maintaining stable compression force. This dynamic mounting allows the system to adapt to cell expansion/contraction while preserving bracing consistency through controlled movement.
Solution Approach 2:
The movable mounting of compression plates provides a cushioning mechanism that absorbs the volume changes of cells during charging and discharging. This beforehand cushioning prevents mechanical stress concentration and maintains reliable bracing conditions by accommodating expansion and contraction movements.
3Reliability
If elastic elements are added to provide compressive force, then consistent pressure on cells is achieved, but device complexity increases
Solution Approach 1:
Elastic elements are utilized to automatically provide compressive force on the battery cells. The elastic elements self-adjust to maintain consistent pressure throughout the spacing range without requiring external control systems, achieving reliable pressure consistency while minimizing additional complexity through self-regulating mechanical properties.
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
Enables precise adjustment of bracing conditions, enhancing battery module performance and reliability by maintaining consistent pressure across varying cell sizes and states.
Implementation Method 1
a compressive force acting on the one or the plurality of battery cells is caused by the two compression plates
Data Source
AI summary
A battery module stores electrical energy. The battery module includes one or more battery cells disposed between two compression plates so as to be next to one another along a transverse axis of the battery module. The battery module is configured such that a spacing between the two compression plates is variable within a spacing range so that a variation in a spatial extent of the one or more battery cells exists along the transverse axis. The two compression plates apply a compressive force to the one or more battery cells within the entire spacing range.