Battery Cell Stack Apparatus with Adjustable Stacking Table
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Solution Overview
Problem
In the manufacturing of cell stacks for secondary batteries, the increasing number of stacked electrode plates causes the separator to become non-horizontal, leading to tearing or damage, as it cannot maintain a constant position relative to the stacked plates.
Innovation Solution
An apparatus with a stack table and adjusting mechanisms that maintain a constant position for electrode plate stacking, using a drive system to fold the separator in a zigzag pattern and alternately stack negative and positive electrode plates between folded portions, ensuring the separator remains horizontal and secure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If the number of stacked electrode plates is increased to manufacture medium and large secondary batteries with larger electric capacity, then the electric capacity is improved, but the separator becomes non-horizontal and is torn or damaged
Solution Approach 1:
The patent applies dynamics by making the stack table height adjustable through a lifting mechanism. As electrode plates are sequentially stacked, the stack table automatically lifts to maintain the stacking position at a constant height, preventing the separator from becoming non-horizontal and avoiding tearing or damage while enabling increased electric capacity
Solution Approach 2:
The patent changes the parameter of stack table height dynamically during the stacking process. The lifting mechanism adjusts the height parameter in real-time to compensate for the accumulating thickness of stacked electrode plates, ensuring the separator remains horizontal and preventing damage
2Device complexity
If the stack table position is not adjusted during stacking, then the device complexity is reduced, but the separator cannot maintain constant position and is torn or damaged
Solution Approach 1:
The stack table lifting mechanism operates automatically based on the stacking process itself. Each time electrode plates are stacked, the table self-adjusts its height through the lifting mechanism, eliminating the need for external intervention or complex control systems while maintaining precise separator positioning
Data Source
AI summary
There is provided an apparatus for manufacturing a cell stack for a secondary battery, the apparatus including: a stack table on which a negative electrode plate and a positive electrode plate are sequentially stacked with a separator interposed therebetween; an electrode-plate-stacking-position adjusting means; a clamping means; a drive means configured to reciprocally turn the stack table, the electrode-plate-stacking-position adjusting means, and the clamping means to both sides so that the separator supplied to the stack table is folded in a zigzag shape and the negative electrode plate and the positive electrode plate are alternately stacked between folded portions of the separator; and a support means configured to support the stack table, the electrode-plate-stacking-position adjusting means, the clamping means, and the drive means.