Pouch Cell Arrester Tab Bending Without Die Tool Changes
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current methods for bending arrester tabs in battery cell manufacturing are inflexible, requiring separate die bending apparatuses for each shape, leading to high costs and increased space requirements due to the need for multiple tools and time-consuming adjustments.
Innovation Solution
A bending apparatus with multiple movable axes enabling linear and rotational movements, allowing for various bending shapes without tool changes, and featuring a computer-controlled relative movement device with closed-loop force monitoring to prevent damage and compensate for elastic material behavior.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If die bending with fixed punches and dies is used, then bending accuracy and speed are improved, but flexibility and adaptability deteriorate due to inability to produce different shapes without tool replacement
Solution Approach 1:
The patent applies dynamics by replacing fixed rigid tooling with a robotic manipulator system that can dynamically adjust its end effector position and orientation. The robotic system with 6 degrees of freedom allows the same apparatus to produce different bending shapes by changing motion parameters rather than physical tools, thus achieving both precision and flexibility.
Solution Approach 2:
The invention changes operational parameters (position, orientation, motion trajectory) of the end effector to produce different bending shapes. By varying these parameters through computer control, the system can adapt to different tab configurations without physical tool changes, resolving the contradiction between precision and adaptability.
2Adaptability or versatility
If multiple die bending apparatuses are used for different shapes, then shape versatility is improved, but device complexity and space requirements worsen
Solution Approach 1:
The patent implements universality by designing a single robotic bending apparatus that can perform multiple bending operations for different tab shapes. The robotic manipulator with programmable end effector serves as a multi-functional device, replacing multiple dedicated die bending apparatuses and reducing overall system complexity and space requirements.
Solution Approach 2:
The invention merges the functions of multiple separate die bending apparatuses into one integrated robotic system. By combining various bending capabilities into a single apparatus with programmable control, the system achieves shape versatility without requiring multiple independent devices.
3Adaptability or versatility
If tool set replacement is performed for different shapes, then shape adaptability is improved, but production time and efficiency worsen due to time-consuming adjustments
Solution Approach 1:
The patent replaces the mechanical tool replacement process with a computer-controlled robotic system. Instead of physically changing punches and dies, the system uses software programming to adjust end effector motion parameters, eliminating the time-consuming mechanical adjustment process and maintaining high production speed while achieving shape adaptability.
Solution Approach 2:
The invention applies preliminary action by pre-programming the robotic system with different bending trajectories and parameters for various tab shapes. This allows instant switching between shapes through parameter recall rather than physical reconfiguration, maintaining production efficiency while enabling shape versatility.
Data Source
AI summary
A bending method for bending the arrester tabs by providing a first battery cell having a first arrester tab and a second battery cell having a second arrester tab, and bending the first arrester tab and the second arrester tab differently. The bending comprises the steps of: providing a first and a second holding device for holding a first and a second end portion respectively of the arrester tab to be bent, the holding devices being relatively movable with a computer-controlled relative moving device; holding the first arrester tab with the holding device and controlling the relative movement device to bend the first arrester tab into a first bent shape; and holding the second arrester tab with the holding device and controlling the relative movement device differently from the previous step to bend the second arrester tab into a second bent shape different from the first bent shape.