Pouch Battery Sealing with Elastic Pressing for Lead-Pouch Gaps
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Solution Overview
Problem
Pouch-type secondary batteries face challenges in efficiently sealing the electrode lead/pouch section due to differences in thickness, leading to non-sealed regions and potential electrolyte leaks.
Innovation Solution
An apparatus and method involving a transfer part to move the battery, a pressing part with an elastic body to press the sealing portion, and a heating part to heat the sealing portion, ensuring continuous and efficient sealing of the pouch-type secondary battery.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a pre-sealing process is added to seal the electrode lead/pouch section, then sealing coverage is improved, but process complexity increases
Solution Approach 1:
The patent combines the pre-sealing process with the main sealing process into a single integrated sealing operation. The sealing device applies heat and pressure simultaneously to both the electrode lead/pouch section and the pouch/pouch section in one continuous action, eliminating the need for separate pre-sealing and main sealing steps, thus reducing process complexity while maintaining comprehensive sealing coverage.
Solution Approach 2:
The sealing device is designed with multi-functional capability to handle different sealing requirements (electrode lead/pouch section and pouch/pouch section) with a single device. The heating unit and pressing unit can adaptively adjust their parameters to seal sections with different thicknesses and material properties, making the device universal for various sealing tasks without requiring additional specialized equipment.
2Productivity
If continuous sealing is implemented, then productivity is improved, but control precision becomes more difficult
Solution Approach 1:
The patent incorporates a control unit that receives feedback signals from sensors monitoring the sealing process parameters (temperature, pressure, sealing quality). The control unit continuously adjusts the heating and pressing parameters in real-time based on this feedback, ensuring consistent sealing quality throughout continuous operation. This closed-loop control system maintains precision even at high production speeds by dynamically compensating for variations in the sealing process.
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 non-sealed regions, reduces the risk of electrolyte leaks, and enhances process efficiency by continuously sealing the pouch-type secondary battery, thereby improving its performance and reducing production time.
Implementation Method 1
a heating part configured to heat the sealing portion
Implementation Method 2
a pressing part including an elastic body configured to press at least one surface of the sealing portion
Data Source
AI summary
The present invention is to provide an apparatus and method for sealing a pouch-type secondary battery.