Modular Pouch Sealing Structure for Variable Electrode Leads
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Solution Overview
Problem
Existing sealing devices for secondary batteries fail to consistently seal pouches with electrode leads due to variations in lead width, thickness, and position, requiring new devices for each configuration, which increases costs and the risk of mold errors.
Innovation Solution
A sealing device with a block structure comprising a lower and upper sealing tool, featuring detachable blocks and magnets for adjustable coupling, allowing for customizable assembly to match the electrode lead's dimensions and position, ensuring a stable and strong seal.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a fixed sealing device is used, then the device structure is simple, but it cannot adapt to variations in electrode lead width, thickness, and position
Solution Approach 1:
The sealing device is divided into multiple detachable blocks that can be separately assembled and disassembled. Each block corresponds to a specific electrode lead configuration, allowing the device to adapt to different lead widths, thicknesses, and positions without requiring a complete device redesign.
Solution Approach 2:
The modular block structure enables a single sealing device to perform multiple functions by assembling different block combinations. The same base device can accommodate various electrode lead configurations through interchangeable blocks, making it universally applicable across different battery designs.
2Manufacturing precision
If a new sealing device is manufactured for each electrode lead configuration, then sealing precision is improved, but manufacturing costs and device complexity increase
Solution Approach 1:
Instead of manufacturing entirely new devices for each configuration, the sealing device is segmented into reusable base components and interchangeable blocks. This allows precise sealing for different electrode leads while minimizing manufacturing costs through component reuse.
Solution Approach 2:
The detachable blocks can be easily removed and replaced based on electrode lead specifications. Rather than discarding entire devices, only the specific blocks needed for the current configuration are used, while other blocks are recovered and reused for different applications.
3Strength
If the sealing device uses a fixed structure, then device complexity is low, but sealing force is insufficient for pouches with electrode leads
Solution Approach 1:
The segmented block structure allows the sealing force to be concentrated and distributed appropriately across different pouch configurations. The detachable blocks can be positioned to apply optimal sealing pressure on the sealing surface, enhancing sealing force without requiring a completely complex device structure.
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 enables compatible sealing across various electrode lead configurations, enhancing sealing force, reducing costs, and preventing mold errors by allowing the sealing device to be assembled according to the specific dimensions and position of the electrode lead, thus improving the sealing process.
Implementation Method 1
Magnets may be provided on the first lower coupling part and the second lower coupling part so as to be attached to each other, respectively.
Data Source
AI summary
A sealing device for a secondary battery, the sealing device configured to seal a sealing part of a pouch through which an electrode lead extends according to the present invention comprises: a lower sealing tool configured to receive the sealing part of the pouch seated thereon; and an upper sealing tool configured to press and seal the sealing part of the pouch, wherein the lower sealing tool comprises: a lower fixed block configured to receive the sealing part of the pouch seated on a top surface thereof; and one or more lower detachable blocks detachably coupled to the lower fixed block and configured to support a portion of the sealing part through which the electrode lead does not extend.