Secondary Battery Laser Welding Jig for Stable Collector Fixing
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Solution Overview
Problem
Existing laser welding apparatuses for secondary batteries face challenges in providing a stable fixing force for current collectors, leading to potential welding defects due to incomplete attachment and detachment of shielding jigs, which can cause gaps and tilting during the welding process.
Innovation Solution
A laser welding apparatus with a shielding jig that is vertically attachable and detachable, featuring a positioning plate with protruding pocket forming parts and a rotating clamp for improved adhesion, ensuring secure fixation of the current collector through a bolt-nut fastening structure and point contact mechanism.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a conventional shielding jig attachment method is used, then the device complexity is reduced, but the reliability of the welding process deteriorates due to incomplete attachment and potential gaps
Solution Approach 1:
The shielding jig is nested within a receptacle space formed by pocket forming parts on the positioning plate. The outer peripheral surface of the shielding jig fits into the receptacle space with a matching inner peripheral surface, creating a nested structure that ensures complete attachment and eliminates gaps between the shielding jig and positioning plate, thereby improving welding process reliability.
Solution Approach 2:
The attachment mechanism transitions from a conventional surface-level attachment to a three-dimensional nested fit. The pocket forming parts create a receptacle space that receives the shielding jig in a vertical dimension, adding depth to the attachment interface. This dimensional change ensures more complete contact and secure fixation.
2Manufacturing precision
If a secure fixation method is implemented, then the manufacturing precision improves, but the ease of operation deteriorates due to additional attachment steps
Solution Approach 1:
The pocket forming parts are pre-formed on the positioning plate to create a ready-made receptacle space. This preliminary preparation ensures that when the shielding jig is attached, it automatically aligns with the pre-formed receptacle space, eliminating the need for complex alignment procedures during operation while maintaining high positioning accuracy.
3Strength
If a complex fastening mechanism is used, then the strength of attachment improves, but the time required for attachment and detachment increases
Solution Approach 1:
The rotating clamp provides a dynamic attachment mechanism that can be quickly engaged and disengaged. The rotation action allows the clamp to move between a clamping position (providing strong attachment force) and a released position (allowing quick detachment). This dynamic mechanism enables strong attachment without requiring multiple fastening steps, reducing the time for jig changes.
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
Enhances the stability of the welding process by minimizing human errors and reducing the risk of defects, providing a more secure and efficient connection between current collectors and electrode tabs in secondary batteries.
Implementation Method 1
laser welding apparatus for a secondary battery... laser-weld a current collector of a secondary battery to another part of the secondary battery
Implementation Method 2
a rotating clamp... so that the rotating clamp and the shielding jig are connected to each other with a bolt-nut fastening structure
Data Source
AI summary
A laser welding apparatus for a secondary battery is provided, with the laser welding apparatus being configured such that a fixing force for a current collector of a secondary battery is improved. The laser welding apparatus reduces the likelihood of human errors and defects in a process of welding the current collector of the secondary battery.