Double Stacking Table Layout for Continuous Electrode Stacking

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Solution Overview

Problem

Existing battery production equipment lacks automation, resulting in low efficiency and high labor costs, with idle time during the stacking process due to sequential operation of cutting, clamping, and unwinding mechanisms.

Innovation Solution

An integrated equipment for die-cutting and stacking that includes two electrode die-cutting mechanisms, conveying mechanisms, and a double stacking table mechanism with rotating arms, allowing continuous operation and simultaneous processing of multiple tasks, such as die-cutting, feeding, and stacking.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If a Z-type integrated cell stacking machine is used for stacking electrodes with separators, then the stacking process can be completed, but the stacking table must wait for the unloading mechanism to finish cutting, clamping, and withdrawing the separator before continuing stacking, resulting in idle time and low stacking efficiency

Engineering Contradiction:
Improvestacking efficiencyVSAvoididle time of stacking table
Core Design Contradiction:
ProductivityVSLoss of time

Solution Approach 1:

The patent divides the stacking system into multiple independent stacking tables (first stacking table and second stacking table) that can operate simultaneously. While one stacking table is performing stacking operations, another can be performing unloading operations, thereby eliminating idle time and improving overall productivity.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The patent implements continuous operation by having multiple stacking tables work in parallel. The stacking process continues without interruption as one table completes stacking while another completes unloading, ensuring that the system is always performing useful work rather than waiting for sequential operations to finish.

Inventive Principle:
Principle #20Continuity of useful action

2Ease of manufacture

If existing single-function equipment is used for die-cutting and stacking operations, then each processing function can be performed, but the equipment occupies large space, has high production cost, and requires high labor consumption

Engineering Contradiction:
Improveproduction costVSAvoidequipment integration
Core Design Contradiction:
Ease of manufactureVSDevice complexity

Solution Approach 1:

The patent combines multiple functions (die-cutting, stacking, and unloading) into a single integrated equipment system. By merging these previously separate operations into one unified machine with multiple stacking tables, the patent reduces the number of separate equipment pieces needed, lowers production costs, and decreases space occupation while maintaining all necessary processing capabilities.

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The integrated equipment is designed to perform multiple functions simultaneously - die-cutting electrodes, stacking them with separators, and unloading completed cells. This multi-functional design eliminates the need for separate single-function machines, reducing overall equipment complexity and investment cost while improving manufacturing efficiency.

Inventive Principle:
Principle #6Universality (Multi-functionality)

Data Source

PatentEP4012815B1Integrated apparatus for die cutting and sheet stacking
Publication Date: 2024.09.04 SHENZHEN GREENSUN TECH CO LTD
  • EP4012815B1 patent drawingFigure 1
  • EP4012815B1 patent drawingFigure 2
  • EP4012815B1 patent drawingFigure 3

AI summary

An integrated equipment of die-cutting and stacking, including two electrode die-cutting mechanisms, two electrode conveying mechanisms, a positive electrode feeding mechanism, a negative electrode feeding mechanism, a battery separator unwinding mechanism, and a double stacking table mechanism. The positive electrode feeding mechanism and the negative electrode feeding mechanism are respectively arranged on two sides of the double stacking table mechanism; and one electrode conveying mechanism is arranged between the electrode die-cutting mechanism and the positive electrode feeding mechanism, and another electrode conveying mechanism is arranged between the electrode die-cutting mechanism and the negative electrode feeding mechanism; the battery separator unwinding mechanism is located above the double stacking table mechanism; the double stacking table mechanism includes a rotating shaft, two rotating arms, two central rotating shafts, a first stacking table and a second stacking table.