Elastic Pressing Pulley Structure for Battery Cell Swelling
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Solution Overview
Problem
Conventional battery modules struggle to improve battery cell performance and effectively control cell swelling, which can lead to reduced lifespan and efficiency.
Innovation Solution
A battery module design featuring a battery cell assembly supported by a base plate and covered by an elastically deformable pressing pulley unit, which includes pulley units, elastic straps, and springs to manage cell swelling and maintain a consistent pressure on the battery cells.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Duration of action of stationary object
If a pressing force is applied to the battery cell to improve performance, then battery cell lifespan is improved, but cell swelling control becomes difficult
Solution Approach 1:
The pressing pulley unit is designed to be elastically deformable in the vertical direction, allowing it to dynamically adjust to cell swelling while maintaining pressing force. The elastic deformation capability enables the structure to accommodate volume changes without compromising the pressing force needed for battery cell performance and lifespan.
Solution Approach 2:
The pressing pulley unit changes its physical state through elastic deformation in response to cell swelling. By allowing the pressing structure itself to deform elastically, the system maintains effective pressing force while adapting to changing cell dimensions, thereby controlling swelling without sacrificing lifespan improvement.
2Force
If the battery module structure is made rigid to maintain pressing force, then performance is improved, but adaptability to cell swelling is reduced
Solution Approach 1:
The pressing pulley unit transitions from a rigid structure to a dynamically deformable one. The elastic deformability allows the pressing structure to maintain force while adapting its shape and position to accommodate cell swelling, thereby achieving both force maintenance and adaptability.
Solution Approach 2:
The pressing pulley unit incorporates elastic elements that function similarly to flexible structures. These elastic components allow the pressing mechanism to deform and adapt to cell volume changes while maintaining the necessary pressing force, combining flexibility with functional effectiveness.
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 enhances battery cell performance by maintaining a consistent pressure and effectively controlling cell swelling, thereby extending the lifespan and maintaining efficiency of the battery cells.
Implementation Method 1
at least one elastic spring provided to the pulley shaft and disposed between the pulley body and the connection member
Implementation Method 2
the pressing pulley unit being elastically deformable in a vertical direction of the battery cell assembly according to cell swelling of the battery cell assembly
Data Source
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AI summary
Disclosed is a battery module, which includes a battery cell assembly including at least one battery cell, a base plate configured to support a lower side of the battery cell assembly, and a pressing pulley unit elastically connected to the base plate and configured to cover an upper side of the battery cell assembly, the pressing pulley unit being elastically deformable in a vertical direction of the battery cell assembly according to cell swelling of the battery cell assembly.