Fuel Cell Stack Assembly Layout With AGV-Guided Parallel Stacking
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Solution Overview
Problem
The manufacturing of hydrogen fuel cell stacks is labor-intensive and not fully automated, leading to increased cycle time and reduced productivity due to manual stacking of numerous components.
Innovation Solution
A system incorporating automated guided vehicles and transfer robots with loading and stacking units, including vision cameras, vacuum adsorbers, and servo-motors, to streamline the stacking process and minimize labor, optimizing the arrangement of working regions for efficient fuel cell assembly and quality control.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If manual labor or local automation is used for stacking fuel cell components, then the device complexity is reduced, but productivity deteriorates and cycle time increases
Solution Approach 1:
The stacking system is divided into multiple independent stacking units (first stacking unit, second stacking unit, etc.), each capable of handling specific components. This segmentation allows parallel processing of different fuel cell components, significantly improving productivity while keeping each individual unit's complexity manageable
Solution Approach 2:
The stacking units are designed with universal functionality to handle various types of fuel cell components (electrodes, gaskets, gas diffusion layers, membrane electrode assemblies) using the same basic mechanism, reducing overall system complexity while maintaining high productivity
2Quantity of substance
If more than 1000 sheets of components are stacked to form a fuel cell stack, then the quantity of product is increased, but cycle time increases and productivity deteriorates
Solution Approach 1:
The stacking system operates continuously with multiple stacking units working in parallel, eliminating idle time between stacking operations. Components are fed continuously through the system, and the automated transfer mechanisms ensure no interruption in the stacking process, reducing cycle time while handling large quantities
Solution Approach 2:
Components are pre-positioned and prepared before the stacking process begins, with loading portions ready to receive components. This preliminary preparation eliminates setup time during the stacking operation, allowing the system to maintain high speed when handling 1000+ components
3Extent of automation
If automated guided vehicles and transfer robots are used to transport fuel cells, then labor costs are reduced, but device complexity increases
Solution Approach 1:
Automated guided vehicles (AGVs) serve as intermediary transport units between storage regions and stacking units. These standardized intermediary carriers simplify the interface between different system components, making the overall automated system more manageable despite its complexity
Solution Approach 2:
Multiple identical stacking units and transfer robots are deployed throughout the system, each being a copy of the same standardized design. This replication reduces complexity by using proven, standardized components rather than designing unique solutions for each position
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 system reduces labor costs, improves production quality, and minimizes cycle time by automating the fuel cell stacking process, enhancing productivity and enabling real-time stack height control and inventory management.
Implementation Method 1
a vacuum adsorber disposed adjacent to the loading table, and configured to remove a slip sheet of the fuel cell transferred from corresponding loading table, through vacuum adsorption
Implementation Method 2
The adsorber includes an adsorption plate configured to clamp and unclamp the fuel cell through vacuum adsorption and release
Data Source
AI summary
A system for stacking fuel cells for a fuel cell stack includes a component part storage region to store the fuel cells, a finished product storage region to store a completed fuel cell stack transferred by an automated guided vehicle, and a plurality of stacking regions disposed between the component part storage region and the finished product storage region, where one side of each stacking region corresponding to the finished product storage region is formed as an entry and exit for the automated guided vehicle for the fuel cell stack, a stacking unit is disposed at each of remaining sides of the stacking region, and the stacking region is supplied with the fuel cells from the component part storage region by the automated guided vehicle to sequentially stack the fuel cells to manufacture the fuel cell stack.