Integrated Battery Cell Insulator for Faster Assembly and Swelling Buffering
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Solution Overview
Problem
The assembly operations for buffer and insulation components in battery cells are complex, leading to low assembly efficiency and affecting the production efficiency of batteries.
Innovation Solution
A battery cell design featuring a housing, electrode assembly, and an insulator with a connected buffer and insulating body that form an integral structure, allowing direct assembly and mitigating swelling forces during electrode expansion, thereby reducing wrinkling and lithium precipitation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If buffer and insulation components are assembled separately in battery cells, then the insulation and buffering functions are provided, but the assembly operations become complex and assembly efficiency decreases
Solution Approach 1:
The patent combines the buffer component and insulation component into a single integrated structure. The buffer member is formed as an integral part of the insulation member, eliminating the need for separate assembly operations. This integrated design maintains both insulation and buffering functions while significantly simplifying the assembly process and improving assembly efficiency.
2Adaptability or versatility
If multiple components are assembled separately, then functional requirements are met, but the number of assembly steps increases and production efficiency is affected
Solution Approach 1:
The buffer member and insulation member are merged into a single integrated component structure. The buffer member is formed as an integral part of the insulation member, reducing the number of discrete components and assembly steps while maintaining all necessary functional requirements for insulation and buffering in the battery cell.
3Ease of manufacture
If buffer and insulation components are assembled separately, then the components can be independently designed, but the assembly process becomes time-consuming and production efficiency decreases
Solution Approach 1:
The buffer member and insulation member are combined into a single integrated component that can be manufactured as one piece. This integration eliminates the time required for separate assembly operations while maintaining the functional benefits of both buffer and insulation features in the battery cell structure.
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
This design enhances assembly efficiency, facilitates automated production, and improves the reliability and cycle life of the battery cell by cushioning swelling forces and reducing the risk of short circuits.
Implementation Method 1
the buffer body, located between the electrode assembly and the housing, is elastically deformed by the swelling of the electrode assembly, whereby the elastic deformation of the buffer body can cushion the swelling of the electrode assembly
Data Source
AI summary
A battery cell includes a housing, an electrode assembly, and an insulator. The housing has a mounting cavity; the electrode assembly is disposed in the mounting cavity; the insulator includes a buffer body and an insulating body that are disposed in the mounting cavity, the insulating body enveloping the electrode assembly, and the buffer body being located between the electrode assembly and the housing; and the buffer body and the insulating body are connected to form an integral structure. This integral structure can be directly assembled with the electrode assembly to achieve envelopment of the electrode assembly, which eliminates the step of separately assembling the buffer body, reduces the number of assembly steps and the number of assembled components, and facilitates the improvement of assembly efficiency of the battery cell.