Battery Module Sliding Plate Assembly for Pressing Force Retention
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Solution Overview
Problem
Conventional battery modules struggle to maintain initial pressing force and effectively absorb large amounts of swelling that occur during charging and discharging, particularly in battery cells made of pure silicon or all-solid-state batteries, leading to reduced module rigidity and stability.
Innovation Solution
A battery module design featuring sliding plates and connection members between adjacent cells, with shaft members and a mounting part on the module frame, to control pressure changes and minimize swelling.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a compression pad is used to absorb swelling, then swelling is partially absorbed, but the initial pressing force cannot be maintained and large amounts of swelling during charging/discharging cannot be controlled
Solution Approach 1:
The compression pad is divided into a first compression pad and a second compression pad positioned at different locations between adjacent battery cells. This segmentation allows each pad to independently apply pressing force to different regions, ensuring comprehensive coverage and maintaining initial pressing force while absorbing swelling effectively
Solution Approach 2:
The compression pads are pre-installed between adjacent battery cells before the battery module operates. This preliminary positioning ensures that the pressing force is applied from the start, maintaining initial pressing force and preventing excessive swelling during charging and discharging cycles
2Reliability
If the battery cell stack applies stress to the module frame during swelling, then the swelling is contained, but module rigidity is reduced and stability is compromised
Solution Approach 1:
The compression force is segmented and distributed through multiple compression pads positioned between adjacent battery cells. This distributes the stress from swelling across multiple contact points rather than concentrating it on the module frame, maintaining both swelling containment and structural rigidity
Solution Approach 2:
The compression pads act as intermediary elements between the battery cells and the module frame. They absorb and distribute the swelling stress, preventing direct transmission of force to the frame structure, thus maintaining module rigidity while containing swelling
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 design maintains initial pressing force and effectively absorbs cell swelling, enhancing module stability and rigidity by allowing sliding plates and connection members to adjust to pressure changes.
Implementation Method 1
a connection member (600) between the first sliding plate (510) and the second sliding plate (520). The connection member (600) may include a spring member
Data Source
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AI summary
A battery module according to one embodiment of the present disclosure includes a battery cell stack in which a plurality of battery cells are stacked; a module frame that houses the battery cell stack; and a sliding plate that is arranged between battery cells adjacent to each other among the plurality of battery cells.