Multi-Row Pouch Cell Sealing Chamber for Higher Throughput
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Solution Overview
Problem
Existing battery cell pouch sealing devices have insufficient processing capacity and speed due to the limitation of accommodating only two cells per chamber, leading to increased equipment costs and complexity with multiple chambers and vacuum pumps.
Innovation Solution
A battery cell sealing device that allows multiple rows of cells within a single chamber, using a sealing unit with multiple cylinders and thrust conversion mechanisms to press and seal both side surfaces of pouches, enabling simultaneous sealing of multiple cells, such as four cells in a 2×2 array, thereby increasing production capacity and reducing equipment costs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If only two battery cells are accommodated in one chamber, then the sealing structure is simple, but the processing capacity is insufficient
Solution Approach 1:
The sealing unit is segmented into multiple independent sealing bars (first sealing bar, second sealing bar, third sealing bar, fourth sealing bar) that can simultaneously seal multiple battery cells within a single chamber. Each sealing bar is independently controlled by its own cylinder, allowing parallel processing of multiple cells without increasing chamber complexity
Solution Approach 2:
The patent transitions from arranging cells in a single row to arranging them in a two-dimensional grid pattern (two rows with multiple cells per row). This dimensional change allows more cells to be accommodated in one chamber while maintaining a manageable chamber structure and sealing mechanism
2Productivity
If multiple chambers are used to increase processing capacity, then the processing speed increases, but the equipment cost increases
Solution Approach 1:
Multiple sealing functions are merged into a single chamber by incorporating multiple sealing bars and cylinders within one chamber. This allows the chamber to process multiple battery cells simultaneously, eliminating the need for multiple separate chambers and associated vacuum pumps, thereby reducing equipment cost while maintaining high processing capacity
Solution Approach 2:
The single chamber is designed with multi-functionality to accommodate and seal multiple battery cells of different configurations. The sealing unit can adapt to seal various cell arrangements (different numbers of rows and columns) within the same chamber, making the equipment versatile and cost-effective
3Area of stationary object
If battery cells are arranged in multiple rows, then the space utilization increases, but the sealing mechanism complexity increases
Solution Approach 1:
The sealing mechanism is divided into multiple independent sealing bars, each responsible for sealing specific cells in the multi-row arrangement. Each sealing bar is controlled by its own cylinder, allowing independent operation and simplifying the control logic despite the complex multi-row configuration
Solution Approach 2:
Each sealing bar is positioned to contact and seal the pouch at the specific location where the battery cell is placed. The sealing mechanism applies force locally at each sealing position rather than requiring a complex global sealing structure, enabling efficient sealing of multiple rows with a relatively simple mechanism
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
This configuration significantly enhances the processing capacity and speed of battery cell production by accommodating more cells per chamber, reducing the overall equipment cost and optimizing space usage with a more efficient chamber layout.
Implementation Method 1
a vacuum pump unit that operates in a vacuum environment within the chamber
Implementation Method 2
a sealing unit sealing each of the battery cells by pressing both side surfaces of a pouch of each of the battery cells
Data Source
AI summary
The present invention relates to a battery cell sealing device for sealing a pouch of a battery cell, more particularly, to a battery cell sealing device configured to be capable of simultaneously sealing a plurality of battery cells accommodated in one chamber to be able to increase production or processing capacity of the battery cells in one chamber and accordingly, decrease cost of an entire equipment.