Pouch Transfer Airflow Control to Prevent Curling and Sealing Failures
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Solution Overview
Problem
Existing pouch transfer devices suffer from pouch curling and adsorption failures during the transfer process, leading to sealing failures and potential electrolyte leakage in secondary batteries due to gravitational sagging of the pouch edges.
Innovation Solution
A pouch transfer device that generates a lift force on the upper surface of the pouch using air injection, preventing curling and ensuring proper adsorption during transfer by employing nozzles to spray air parallel to the transfer path and a control system to manage the transfer and folding processes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the pouch is transferred using a conventional transport part, then the transfer process is simple, but the pouch edges sag due to gravitational force causing curling and adsorption failure
Solution Approach 1:
The patent applies pneumatic principles by using air nozzles to generate upward airflow that counteracts gravitational sagging of the pouch edges during transfer. The air pressure from the nozzles creates lift force on the pouch upper surface, preventing curling and ensuring reliable adsorption without requiring complex mechanical support structures.
Solution Approach 2:
The patent changes the physical parameter of air pressure to generate lift force. By controlling the air pressure from the nozzles, the system dynamically adjusts the upward force on the pouch to counteract gravity during different phases of transfer, improving reliability without increasing device complexity.
2Reliability
If air is sprayed to generate lift force on the pouch upper surface, then pouch curling is prevented, but energy consumption increases
Solution Approach 1:
The air injection is applied periodically rather than continuously - activated only during the transfer phase when the pouch is vulnerable to sagging, and deactivated when the pouch is stable. This periodic application maintains pouch transfer reliability while significantly reducing overall energy consumption compared to continuous air injection.
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
Prevents pouch curling and adsorption failures, ensuring seamless transfer and sealing, thereby preventing electrolyte leakage and insulation issues in secondary batteries.
Implementation Method 1
a nozzle part disposed on the first path and provided to spray air to an upper portion of an upper surface of the pouch during transfer by the first transport part
Implementation Method 2
generating a lift force on the upper surface of the pouch during transfer
Data Source
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AI summary
A pouch transfer device according to one example of the present invention comprises a first transport part, on which a lower surface of a pouch is seated, provided to transfer the pouch along a first path, a folding part provided to be capable of entering the inside of the first transport part to support the lower surface of the pouch seated on the first transport part, and a nozzle part disposed on the first path and provided to spray air to an upper portion of an upper surface of the pouch during transfer by the first transport part.