Battery Module Deformable Member Vibration Damping
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Secondary battery modules in medium-large devices, such as electric or hybrid electric automobiles, face challenges in preventing electrode assembly movement due to vibration, which can lead to performance degradation and reliability issues.
Innovation Solution
A battery module design featuring a deformable, electrically insulating member between the electrode assembly and the battery case, with lateral and central support portions to securely hold the assembly in place, reducing movement and enhancing stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the electrode assembly is directly placed in the battery case without support structures, then the device complexity is reduced, but the electrode assembly moves under vibration causing reliability degradation
Solution Approach 1:
A deformable member is introduced as an intermediary component between the electrode assembly and the battery case. This member provides mechanical support and prevents electrode assembly movement during vibration, while its deformable nature allows it to adapt to the assembly's position and shape, avoiding the need for complex rigid support structures.
Solution Approach 2:
The deformable member changes its physical parameters (shape, position) in response to the electrode assembly's characteristics and vibrations. By allowing the support structure to dynamically adjust its form rather than using a fixed complex structure, the patent achieves reliable electrode positioning with simpler overall design.
2Reliability
If rigid support structures are used to prevent electrode assembly movement, then reliability under vibration is improved, but the device complexity and potential damage to electrode assembly increase
Solution Approach 1:
The deformable member functions as a flexible support structure that can bend and deform to accommodate the electrode assembly's shape and movements. This flexibility allows it to provide continuous support without creating rigid contact points that could damage the electrode assembly during vibration or assembly insertion.
Solution Approach 2:
The support structure transitions from a static rigid form to a dynamic deformable form that can adapt its shape and position. This dynamic characteristic allows the member to absorb vibration energy and maintain contact with the electrode assembly without transmitting damaging forces, thereby protecting assembly integrity while ensuring stability.
3Reliability
If fixed support structures are used to prevent electrode assembly movement, then reliability is improved, but adaptability to different assembly configurations is reduced
Solution Approach 1:
The deformable member's physical parameters (shape, size, position) can change to accommodate different electrode assembly configurations. This parametric adaptability allows the same support structure to work with variations in assembly design while maintaining reliable vibration protection, unlike fixed support structures that would require redesign for each configuration.
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 effectively reduces vibration-induced stress on the electrode assembly, improving the battery's endurance and reliability by providing a stable interface that prevents movement and enhances performance.
Implementation Method 1
a deformable member between the electrode assembly and the bottom surface of the battery case, the deformable member being pressed between the electrode assembly and the bottom surface of the battery case
Data Source
AI summary
A battery including a battery case, an electrode assembly in the battery case, the electrode assembly including a plurality of windings that are wound about a winding axis, the winding axis being oriented parallel to a bottom surface of the battery case, and a deformable member between the electrode assembly and the bottom surface of the battery case, the deformable member being pressed between the electrode assembly and the bottom surface of the battery case.