Secondary Battery Lead Bending Jig for Pre-Bent Electrode Alignment
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Solution Overview
Problem
The existing methods for manufacturing secondary battery modules face challenges in bending electrode leads without causing damage or welding defects, especially when the electrode leads have already been bent.
Innovation Solution
An apparatus with a bending jig that includes a coupling part and a bending part with inclined surfaces is used to press and mold the electrode lead, allowing for easy bending even if the lead has been previously bent.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If a conventional bending jig is used to bend the electrode lead, then the electrode lead can be bent toward the busbar, but the electrode lead may be damaged or insufficiently bent when it has already been bent during transfer
Solution Approach 1:
The bending jig changes the geometric parameters of its contact surfaces by incorporating inclined surfaces instead of flat surfaces. This parameter change allows the jig to accommodate electrode leads that have been pre-bent during transfer, enabling proper bending toward the busbar without causing damage or insufficient bending.
Solution Approach 2:
The bending jig applies local quality by providing inclined surfaces at specific contact points with the electrode lead. These localized inclined surfaces are designed to interact with the pre-bent portion of the electrode lead, ensuring proper bending geometry at the critical bending region while maintaining overall lead integrity.
2Productivity
If the electrode lead is bent during transfer, then the secondary battery can be moved to the welding position, but the bent electrode lead interferes with the bending jig causing damage or welding defects
Solution Approach 1:
The invention converts the harmful effect of the pre-bent electrode lead into a beneficial condition by designing the bending jig with inclined surfaces that specifically accommodate the bent shape. The pre-bent condition, which originally caused interference and damage, is now utilized to facilitate proper bending toward the busbar, eliminating the harmful interference while maintaining manufacturing efficiency.
3Productivity
If the electrode lead is not properly bent, then the bending process is fast, but welding quality deteriorates
Solution Approach 1:
The bending jig modifies the contact surface parameters by using inclined surfaces instead of flat surfaces. This parameter change ensures that the electrode lead achieves the correct bending geometry required for high-quality welding, while the inclined design maintains a efficient bending process by guiding the lead smoothly into the proper position.
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 apparatus reduces the defect rate of secondary batteries, saves processing costs associated with defects, and improves the yield of secondary batteries by ensuring proper bending and welding of electrode leads.
Implementation Method 1
a bending part provided at one side of the coupling part and having at least one surface provided to be inclined... presses and molds an electrode lead
Data Source
AI summary
Discussed is an apparatus for manufacturing a secondary battery including: a main body; and at least one bending jig that is connected to the main body and presses and molds an electrode lead of the secondary battery, wherein the at least one bending jig includes a coupling part coupled to the main body, and a bending part provided at one side of the coupling part and having at least one surface provided to be inclined.