Battery Assembly Laser Attenuation for Lateral Light Leakage
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Solution Overview
Problem
Conventional laser welding machines fail to adequately prevent unintended leakage of laser light when applied in a lateral direction, posing a safety risk.
Innovation Solution
A manufacturing apparatus for battery assemblies incorporating a laser light attenuation mechanism with a main body featuring an uneven structure that diffusely reflects laser light or a coolant flow path to attenuate and block laser light, ensuring secure prevention of unintended leakage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If conventional laser welding machine is used, then laser welding can be performed, but laser light leakage cannot be adequately prevented when applied in lateral direction
Solution Approach 1:
The patent converts the harmful laser light into beneficial cooling energy by directing it through a coolant flow path. The laser light's energy is utilized to cool the battery assembly during welding, transforming a safety hazard into a useful thermal management function.
Solution Approach 2:
The patent introduces a coolant as an intermediary substance between the laser light and the surrounding environment. The coolant absorbs the laser light energy and transports it away, preventing direct laser light leakage while providing cooling to the workpiece.
2Ease of operation
If laser light is applied in lateral direction for welding, then welding accessibility is improved, but laser light leakage risk increases
Solution Approach 1:
The patent merges the laser welding function with the coolant delivery system. The coolant flow path is positioned to simultaneously receive laser light and provide cooling, combining two functions into one integrated system that addresses both welding accessibility and safety.
Solution Approach 2:
The patent addresses lateral laser application by introducing a temporal dimension through continuous coolant flow. The coolant continuously absorbs laser energy over time as it flows through the path, managing the lateral laser light hazard that conventional static shielding cannot handle.
3Device complexity
If simple laser blocking is used, then device complexity is reduced, but laser light attenuation effectiveness is insufficient
Solution Approach 1:
The coolant flow path serves multiple functions simultaneously: it blocks laser light, cools the battery assembly, and prevents laser light leakage. This multi-functional design eliminates the need for separate shielding structures, reducing overall device complexity while improving safety.
Solution Approach 2:
The coolant system serves itself by using the laser light energy directly for cooling purposes. The coolant absorbs the laser energy that would otherwise be harmful and converts it into useful thermal energy for cooling the workpiece, making the system self-sufficient.
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 effectively diffuses and blocks laser light, reducing the risk of unintended leakage and enhancing safety by diffusely reflecting and cooling the laser light to prevent it from escaping the manufacturing environment.
Implementation Method 1
an uneven structure that is provided in a surface of the main body and that diffusely reflects the laser light
Implementation Method 2
a coolant flow path provided inside the main body
Data Source
AI summary
A manufacturing apparatus for a battery assembly having a joining-target portion at which a plurality of members are joined together by laser welding includes: a laser that applies laser light toward the joining-target portion; and a laser light attenuation portion that is provided at least at a position facing the laser and that attenuates the laser light, wherein the laser light attenuation portion includes a main body, and i) an uneven structure that is provided in a surface of the main body and that diffusely reflects the laser light, or ii) a coolant flow path provided inside the main body.