Cylindrical Battery Case Closing With Radial Processing Discs
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Solution Overview
Problem
Current manufacturing processes for cylindrical lithium-ion batteries face challenges in achieving high production speed while maintaining the quality of the final product, particularly in efficiently closing the cylindrical case without damaging the components.
Innovation Solution
A manufacturing machine and method that utilize a processing conveyor and an operating group with radially movable processing discs to deform the cylindrical case's side wall, forming an annular groove and securely closing it with a lid and gasket, ensuring precise and efficient sealing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If conventional manufacturing processes are used to close the cylindrical case, then the production speed is limited, but the quality and component integrity are maintained
Solution Approach 1:
The closing operation is divided into multiple sequential steps performed by different processing discs: forming the annular groove, deforming the upper edge, and securing the lid. This segmentation allows each operation to be optimized independently while maintaining overall quality standards, enabling high-speed production without compromising component integrity.
Solution Approach 2:
The processing discs are designed to be radially movable, allowing them to dynamically adjust their position relative to the cylindrical case. This dynamic capability enables precise control of deformation forces during the closing process, maintaining high production speed while ensuring consistent quality and preventing damage to internal components.
2Productivity
If high production speed is achieved, then productivity increases, but the precision of closure and component integrity may be compromised
Solution Approach 1:
The radially movable processing discs provide dynamic adjustment capability that maintains precise control over the closing operation even at high production speeds. The discs can be positioned exactly where needed and apply controlled forces to ensure precise formation of the annular groove and secure attachment of the lid, regardless of production rate.
Solution Approach 2:
The processing conveyor continuously moves the cylindrical case through the processing path, with multiple processing discs performing operations in sequence without interruption. This continuous action maintains high production speed while each disc ensures precise execution of its specific operation, contributing to overall closure precision.
3Reliability
If the upper edge of the cylindrical case is deformed against the lid to form a sealed closure, then the sealing quality is improved, but the risk of damaging the electrochemical cell increases
Solution Approach 1:
The sealing process is segmented into distinct operations: first forming an annular groove, then deforming the upper edge against the lid. This segmentation allows the deformation force to be applied gradually and controlled, achieving secure sealing while minimizing the risk of transmitting excessive forces that could damage the electrochemical cell inside.
Solution Approach 2:
The processing discs act as intermediaries between the lid and the cylindrical case, providing controlled deformation of the upper edge. This intermediary action ensures that the sealing force is applied uniformly and controlled, achieving reliable sealing while protecting the electrochemical cell from direct exposure to potentially damaging forces.
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 enables high-speed production of cylindrical batteries with enhanced quality by ensuring consistent and precise closure of the cylindrical case, maintaining component integrity and increasing production efficiency.
Implementation Method 1
deform an upper edge of the cylindrical case against the lid
Implementation Method 2
an actuator device that is configured to rotate all the processing discs in a synchronized manner around the corresponding third rotation axes
Implementation Method 3
a processing conveyor configured to move forward along a processing path a seat designed to support the cylindrical case
Data Source
AI summary
A manufacturing machine for manufacturing a cylindrical battery having a cylindrical case which houses an electrochemical cell. They are provided: a processing conveyor configured to move forward along a processing path a seat designed to support the cylindrical case; and an operating group which is arranged along the processing path and is configured to perform a processing on the cylindrical case. The operating group has: a support body axially aligned with the corresponding seat and mounted to rotate around a rotation axis; and a plurality of processing discs, which are configured to perform a machining on the side wall of the cylindrical case, are uniformly mounted on the support body to form a circle at the centre of which the cylindrical case is placed in use, and are radially movable to radially get close to and move away from the cylindrical case which is in use between them.