Electrode Notching Device Segmentation for Pressing Rate
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Solution Overview
Problem
Existing notching devices for continuous electrode sheets face inefficiencies due to the press's dual role in both forming notches and transporting the electrode sheet, leading to reduced production rates and increased costs.
Innovation Solution
A notching device configuration where a drawing member transports the electrode sheet, allowing the press to focus solely on forming high-quality notches, with optional dual grippers and a tension system to enhance efficiency and precision.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the press performs both notching and transport functions simultaneously, then the device structure is simplified, but the pressing rate decreases and production efficiency is reduced
Solution Approach 1:
The patent divides the press system into two independent functional modules: a notching press that performs only notching operations, and a separate transport mechanism that handles electrode sheet conveyance. This segmentation allows each module to optimize its performance independently, with the notching press achieving higher pressing rates without being constrained by transport cycle times.
Solution Approach 2:
The transport function is extracted from the press and assigned to a dedicated transport mechanism. This extraction enables the press to focus exclusively on notching operations, eliminating the time loss associated with the press performing both notching and transport in sequence, thereby significantly increasing the pressing rate.
2Ease of operation
If the press moves backwards with the electrode sheet during continuous feeding, then the pressing operation is simplified, but the pressing rate is limited by transport speed
Solution Approach 1:
The system separates the pressing operation from the transport operation, with the notching press remaining stationary while a dedicated transport mechanism handles electrode sheet conveyance. This allows the press to operate at optimal pressing speeds without being constrained by transport cycle times.
Solution Approach 2:
The transport mechanism serves itself by independently handling both the conveyance of the electrode sheet and the positioning for notching operations, freeing the press to focus solely on high-speed notching without needing to coordinate its movement with transport cycles.
3Device complexity
If the press serves as both feeder and presser, then the number of components is reduced, but the production efficiency deteriorates due to inertia of moving mold
Solution Approach 1:
The patent divides the system into a stationary notching press and a separate transport mechanism with movable components. The mold in the notching press remains stationary, eliminating inertia-related speed limitations, while the transport mechanism handles all movement requirements for feeding and positioning electrode sheets.
Solution Approach 2:
The feeding function is extracted from the press and assigned to the transport mechanism. This allows the press to be a simple, stationary notching device that can operate at high speeds without the complexity and inertia constraints of integrated transport mechanisms.
Data Source
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AI summary
Disclosed is a device for notching, at an interval of a unit electrode, a continuous electrode sheet in which an electrode active material is applied to one or both surfaces thereof, to form a plurality of unit electrodes from the electrode sheet, the device including a press to press notches on the top and the bottom of the electrode sheet at a set position, and a drawing member arranged at the rear of the press based on a feed direction of the electrode sheet, the drawing member drawing and transporting the electrode sheet by one pitch, a size corresponding to the unit electrode according to operation of the press, wherein, when one of the grippers draws and transports the electrode sheet, the remaining grippers move to a position for drawing.