Parallel Cell Stack Conveyance Beyond Clocked Battery Production
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Solution Overview
Problem
Existing production lines for battery cells face limitations in production capacity and efficiency due to the use of single-sheet stacking methods and clocked movements, which result in slower processing and energy inefficiencies.
Innovation Solution
An apparatus comprising at least two cell stacking devices and a feed device, with a transport system of individually movable transport units, allows for parallelized cell stack formation and decoupling of stack formation from transport timing, enabling more reliable and efficient production.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If single-sheet stacking method with clocked movements is used, then device complexity is reduced, but productivity is limited and energy consumption increases
Solution Approach 1:
The system is divided into multiple independent stacking devices (first stacking device, second stacking device) that operate in parallel on different transport units. Each stacking device independently forms stacks on its assigned transport units, enabling parallelized production without requiring complex coordinated movements of a single system.
Solution Approach 2:
The transport units are individually movable and can be dynamically assigned to different stacking devices based on production needs. The system transitions from static, clocked movements to dynamic, flexible positioning where transport units can be removed from the transport system and assigned to specific stacking devices as required.
2Productivity
If clocked movements are used for transport, then control is simplified, but energy consumption increases and productivity is limited
Solution Approach 1:
Multiple stacking devices operate continuously and independently on their respective transport units, eliminating idle time and waiting periods associated with clocked movements. The parallel architecture ensures that while one stacking device is completing a stack, others are simultaneously working on different units, maintaining continuous productive action throughout the system.
Solution Approach 2:
Transport units are prepared and positioned in advance for specific stacking devices, and stacks are formed on transport units before they are needed at the delivery location. This preliminary formation of stacks on transport units allows for more efficient resource utilization and reduces the need for repeated acceleration and deceleration cycles.
3Reliability
If parallel stacking devices with individual transport units are used, then productivity and reliability are improved, but device complexity increases
Solution Approach 1:
The system segments the stacking function into multiple independent devices, each responsible for forming stacks on specific transport units. This segmentation isolates potential failure points, so that issues in one stacking device do not propagate to others, thereby improving overall system reliability while maintaining manageable complexity through functional separation.
Solution Approach 2:
The system changes the operational parameters by allowing different stacking devices to work on different transport units simultaneously, rather than using a single device with sequential operations. This parameter change from sequential to parallel processing improves reliability through redundancy while the modular architecture keeps complexity manageable.
4Productivity
If transport units are removed from transport system for stack formation, then stack formation can be decoupled from transport timing, but control complexity increases
Solution Approach 1:
The system dynamically manages the removal and reassignment of transport units between the transport system and stacking devices based on real-time production requirements. This dynamic flexibility allows stack formation to be decoupled from transport timing, enabling each stacking device to work at its optimal pace without being constrained by the transport system's clocked movements.
Data Source
AI summary
The invention relates to an apparatus for forming and conveying cell stacks formed by segments for the energy cell producing industry, said apparatus comprising—at least two cell stacking devices which are designed to place the segments on top of each other to produce cell stacks, and—at least one feed device, each of which is designed to feed the segments to the cell stacking devices, wherein—a transport system having a plurality of individually movable transport units is provided, which are designed to convey the cell stacks produced by the cell stacking devices from a pick-up area into a delivery area that is spatially remote from the pick-up area, wherein—each of the cell stacking devices forms a cell stack in or on one of the transport units, and—the transport units in the pick-up area can be removed from the transport system in order to form the cell stack.