Pouch Battery Degassing and Sealing with Vacuum Tube Assembly
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Solution Overview
Problem
Existing secondary battery technologies separately perform degassing and sealing processes, leading to reduced work efficiency.
Innovation Solution
A gas removing device that simultaneously discharges and seals the gas discharge hole using a pair of vacuum tubes, a heating member, a cutting member, and a rotating member to form sealed and unsealed parts on the pouch surface, allowing for efficient gas removal and hole sealing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If degassing and sealing processes are performed in separate devices, then each process can be performed with dedicated equipment, but work efficiency deteriorates due to sequential processing
Solution Approach 1:
The patent combines the degassing process and sealing process into a single integrated device. The vacuum tube assembly performs both functions by creating a vacuum environment for gas removal while simultaneously providing heating elements for sealing the pouch opening, eliminating the need for separate sequential operations and improving work efficiency
2Productivity
If vacuum pressure is applied to the pouch, then gas discharge is facilitated, but the pouch may deform or collapse
Solution Approach 1:
The patent applies vacuum pressure to both the inside and outside surfaces of the pouch simultaneously through the vacuum tube assembly. This balanced approach creates a counteracting force distribution that facilitates gas discharge while preventing unilateral compression that would cause pouch deformation or collapse
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 device improves work efficiency by simultaneously discharging gas and sealing the discharge hole, simplifying the process and enhancing operational efficiency.
Implementation Method 1
a heating member provided on a pressing surface of each of the vacuum tubes, which presses the pouch, is configured to seal only a portion of an edge of the vacuum surface
Implementation Method 2
a pair of vacuum tubes configured to symmetrically press opposing surfaces of a pouch so as to form a vacuum surface
Data Source
AI summary
The present invention provides a gas removing device, which removes a gas generated inside a pouch, in which an electrode assembly is accommodated. The gas removing device includes a pair of vacuum tubes configured to press opposing surfaces of a pouch so as to form a vacuum surface on the pouch; a heating member provided on a pressing surface of each of the vacuum tubes, which presses the pouch, is configured to seal only a portion of an edge of the vacuum surface so as to form a sealed part and an unsealed part; a cutting member configured to cut the vacuum surface of the pouch and form a cutoff hole; and a gas discharging member configured to discharge a gas from inside the pouch to the outside through the unsealed part, the cutoff hole, and the vacuum tubes.