Accumulator Cell Pack Vibration Decoupling via Gap and Isolators
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Solution Overview
Problem
Existing rechargeable batteries in construction equipment, such as vibratory plates and rammers, are prone to damage due to high vibrations, leading to failures in battery management systems and cell components.
Innovation Solution
An accumulator design with a vibration-decoupled cell pack, featuring a housing with a gap around the cell pack and vibration isolating elements, such as rubber inserts or foam, to absorb and reduce external vibrations, ensuring the cell pack is kept stable and isolated from direct contact with the housing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If the cell pack is firmly screwed or clamped to the housing, then mechanical stability is improved, but vibration transmission increases causing damage to battery components
Solution Approach 1:
A vibration decoupling device is introduced as an intermediary element between the cell pack and the housing. This device comprises vibration decoupling elements arranged in the space between the cell pack and housing, which decouple the cell pack from housing vibrations while maintaining mechanical stability, thereby preventing vibration transmission to sensitive battery components
Solution Approach 2:
The vibration decoupling device is segmented into multiple vibration decoupling elements distributed in the space between the cell pack and housing. This segmentation allows the vibration isolation function to be distributed across multiple contact points, effectively reducing vibration transmission while maintaining overall structural stability
2Volume of moving object
If the cell pack dimensions are reduced to fit in the housing, then space utilization is improved, but vibration isolation space is reduced
Solution Approach 1:
The patent applies local quality by creating localized gaps between the cell pack and housing at specific areas where vibration isolation is most needed. These gaps are strategically positioned to provide effective vibration decoupling while minimizing the overall volume occupied by the cell pack, thus maintaining both space utilization and vibration isolation effectiveness
3Reliability
If vibration decoupling elements are added to isolate the cell pack, then vibration protection is improved, but device complexity increases
Solution Approach 1:
The vibration decoupling elements are implemented as flexible elements that can be简单地 arranged in the available space between the cell pack and housing. These flexible elements provide effective vibration isolation without requiring complex mechanical structures, thus improving vibration protection while minimizing increases in device complexity
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 vibration decoupling effectively reduces the transmission of external vibrations to the cell pack, minimizing damage and maintaining the stability and performance of the battery management system, while allowing for efficient cooling and air flow.
Implementation Method 1
the vibration decoupling device comprises at least one vibration decoupling element arranged in the space between the cell pack and the housing
Implementation Method 2
A suitable vibration decoupling element can be, for example, a rubber element such as a rubber insert or mat
Data Source
Figure 1~2
AI summary
An accumulator is described, comprising at least one cell pack (1) with at least one rechargeable battery cell, a housing (2) enclosing the cell pack (1), and a vibration decoupling device. At least one external dimension of the cell pack (1) is smaller than a corresponding internal dimension of the housing (2), such that a gap exists between the cell pack (1) and the housing (2) in this region. The vibration decoupling device includes at least one vibration decoupling element (5) arranged in the gap between the cell pack (1) and the housing (2).