Laser Welding Head Cooling Structure to Prevent Heat Deformation
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Solution Overview
Problem
The laser welding head in battery production welding devices is prone to high-temperature deformation due to thermal radiation and accumulated heat, leading to reduced welding reliability and increased defects in the weld surface.
Innovation Solution
A welding device with a laser welding head equipped with a cooling mechanism arranged on its side wall, featuring a connecting pipe with an accommodating groove and limiting assemblies to secure the cooling mechanism, and made of thermally conductive materials like copper or aluminum, which enhances heat dissipation and maintains the cooling mechanism's position, thereby reducing the risk of deformation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If the laser welding head is used for welding without cooling mechanism, then the welding process can be performed, but the laser welding head will be heated and deformed due to thermal radiation and accumulated heat
Solution Approach 1:
The laser welding head is divided into functional segments including a cooling channel system integrated within the head structure. The cooling mechanism is separated into independent components (cooling fluid passage, external cooling device) that can be independently controlled and maintained, allowing effective heat removal while preserving welding functionality.
Solution Approach 2:
A cooling fluid (intermediary substance) is introduced as a mediator between the heat source (laser welding head) and the environment. The cooling fluid absorbs heat from the laser welding head through integrated cooling channels and transports it away, preventing direct thermal radiation damage and maintaining welding reliability.
2Temperature
If the cooling mechanism is arranged on the nozzle, then the cooling effect can be achieved, but the relative position between cooling mechanism and laser welding head may separate
Solution Approach 1:
The cooling mechanism is merged with the laser welding head structure through integrated cooling channels formed within the head body. The cooling fluid passages are built into the laser welding head components themselves, ensuring that the cooling mechanism and welding head maintain fixed relative positions while achieving effective cooling of critical areas.
Solution Approach 2:
The cooling channels are nested within the laser welding head structure, with cooling passages embedded in the head body and components. This nested arrangement ensures the cooling mechanism remains integrated with the welding head, preventing separation while allowing the cooling system to be compact and efficient.
3Temperature
If the cooling mechanism size is increased to improve cooling effect, then the cooling performance improves, but the device complexity increases
Solution Approach 1:
The cooling channels are designed in three-dimensional space within the laser welding head structure, utilizing available volume efficiently. The cooling passages are arranged in multiple dimensions (radial, axial, and circumferential directions) to maximize cooling surface area and heat transfer efficiency without increasing the external dimensions or overall complexity of the welding head.
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 cooling mechanism effectively reduces the risk of high-temperature deformation, improves the laser welding effect, and prolongs the service life of the welding device by maintaining a stable temperature and ensuring reliable operation.
Implementation Method 1
the connecting pipe and the nozzle are made of thermally conductive materials... the cooling effect of the cooling mechanism on the connecting pipe can be conducted to the nozzle
Implementation Method 2
the connecting pipe and the nozzle are made of thermally conductive materials like copper or aluminum, which enhances heat dissipation
Data Source
AI summary
A welding device includes a laser welding head and a cooling mechanism. The laser welding head is provided with a channel for laser to pass through, and the cooling device is arranged on a side wall of the laser welding head and configured to cool the laser welding head.