Battery Cell Compression Assembly for Expansion and Interface Stability
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Solution Overview
Problem
Battery cells in existing technologies are prone to overpressure or becoming too loose during usage, leading to poor infiltration and interface differences, which affect their performance and safety.
Innovation Solution
A battery design that incorporates a pressure applying component to maintain a proper pressing force on the battery cell throughout its service life, preventing overpressure and excessive looseness.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If a battery cell is allowed to expand freely during usage, then the battery cell maintains its volume, but the battery cell becomes too loose leading to interface difference
Solution Approach 1:
The patent applies preliminary anti-action by pre-compressing the battery cell with a pressing plate during assembly. This initial compression counteracts the future expansion of the battery cell during usage, maintaining consistent interface contact and preventing the battery cell from becoming too loose, thereby resolving the contradiction between volume maintenance and interface contact quality.
2Reliability
If a pressing force is applied to the battery cell, then the interface contact quality is improved, but the battery cell may be over-pressed causing poor infiltration
Solution Approach 1:
The patent applies dynamics by designing an adjustable pressing mechanism that can modify the pressing force according to the battery cell's expansion state during different usage stages. The pressing plate's position can be adjusted to maintain appropriate compression, preventing both over-pressing that would cause poor infiltration and under-pressing that would lead to loose interfaces, thereby resolving the contradiction between interface contact quality and infiltration quality.
3Reliability
If the pressing force is adjusted throughout the service life, then the battery cell maintains proper compression, but the device structure becomes more complex
Solution Approach 1:
The patent applies segmentation by dividing the pressing mechanism into a modular pressing plate that can be independently adjusted. This segmented design allows for simple position adjustment of the pressing plate along the battery cell without requiring complex automated control systems, maintaining reliable battery performance while minimizing device complexity through a straightforward, manually adjustable mechanism.
Data Source
AI summary
A battery and an electric device are provided. The battery includes a battery module and a pressure applying component. The battery module includes one layer of battery row or a plurality of layers of battery rows laminate in a first direction. The battery row includes one battery cell or a plurality of battery cells arranged in a second direction, and a first surface, perpendicular to the first direction, of a housing of the battery cell is a surface having the largest area. The pressure applying component is provided on at least one side of the battery module in the first direction, the pressure applying component abuts against the first surface, and a position of the pressure applying component in the first direction is adjustable.