Battery Can Sensor Assembly With Positive-Pressure Dust Protection
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Solution Overview
Problem
Existing apparatuses for manufacturing battery cans often malfunction due to pollutants like lubricant dust, leading to operational stops and reduced productivity.
Innovation Solution
An apparatus with a sensor assembly that includes a sensor, a support, an air nozzle, and an air supplier to generate a positive pressure inside the support, preventing pollutants from contaminating the sensor and ensuring accurate counting of metal bars.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a sensor is used to count metal bars in the manufacturing process, then productivity is improved through automated counting, but the sensor malfunctions due to pollutant contamination
Solution Approach 1:
A support structure is introduced as an intermediary between the sensor and the metal bar processing environment. This support creates a physical barrier that blocks pollutants from reaching the sensor while still allowing the sensor to detect metal bars through designated openings, thus protecting sensor reliability without compromising counting functionality
Solution Approach 2:
An air blowing device is implemented to generate a flow of air that actively repels pollutants away from the sensor. The pneumatic system creates a protective air curtain or positive pressure zone around the sensor, preventing lubricant dust and other contaminants from settling on the sensor surface, thereby maintaining operational reliability
2Measurement precision
If the sensor is exposed to the manufacturing environment for accurate detection, then measurement precision is improved, but the sensor is contaminated by pollutants
Solution Approach 1:
The support structure implements local quality by creating a differentiated environment: the area around the sensor is protected from pollutants through selective positioning and structural design, while the rest of the manufacturing environment remains unchanged. The support has openings positioned to allow detection light or signal passage while blocking contaminant access
Solution Approach 2:
The support acts as a mediating structure that separates the sensor from direct exposure to pollutants. It provides a protected interface zone where the sensor can maintain measurement precision without being directly contaminated by lubricant dust and other harmful factors present in the manufacturing environment
3Reliability
If the sensor assembly is protected from pollutants, then reliability is improved, but device complexity increases due to additional components
Solution Approach 1:
The support structure serves as a simple intermediary element that provides protection without requiring complex mechanisms. It is a straightforward structural component that can be manufactured and assembled easily, adding minimal complexity while effectively blocking pollutant access to the sensor
Solution Approach 2:
The air blowing device, while adding a pneumatic component, uses a relatively simple system consisting of an air source and a blowing mechanism. This approach provides effective pollutant repulsion without requiring complex mechanical structures, maintaining a balance between reliability improvement and device complexity
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 solution effectively prevents sensor malfunctions and errors, ensuring continuous operation of the battery can manufacturing apparatus and improving productivity by maintaining the reliability of the sensor for counting metal bars.
Implementation Method 1
an air nozzle coupled to the support and configured to blow air outside the support into the support such that a positive pressure is generated inside the support
Data Source
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AI summary
The present disclosure relates to an apparatus for manufacturing a battery can, a method of manufacturing a battery can, and a secondary battery including a battery can. The apparatus for manufacturing a battery can includes a press mold configured to press a metal bar made of a metal material and form the metal bar into a battery can, and a sensor assembly configured to count the metal bar. The sensor assembly includes a sensor including a sensing surface to detect the metal bar before the metal bar is placed on the press mold, a support configured to support the sensor without blocking the sensing surface, an air nozzle coupled to the support and configured to blow air outside the support into the support such that a positive pressure is generated inside the support, and an air supplier connected to the air nozzle to blow the air into the support.