Bipolar Plate Electrode Board Alignment for Space-Efficient Stacking
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Solution Overview
Problem
The limited space on the bipolar plates in a fuel cell stack restricts the utilization of electrical active surfaces and operating media ports, hindering the development of high-performance fuel cell stacks.
Innovation Solution
The integration of board alignment devices into the electrode boards of the bipolar plates, which are used to align and position the cathode and anode boards during assembly, forming a bipolar plate positioning device that optimizes the use of available space and facilitates precise stacking.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If separate alignment devices and positioning devices are used for assembling and stacking bipolar plates, then alignment and positioning functions are fulfilled, but device complexity increases and valuable space on the bipolar plate is wasted
Solution Approach 1:
The patent combines the board alignment device and bipolar plate positioning device into a single integrated structure. The board alignment device is formed as an integral part of the bipolar plate, eliminating the need for separate positioning devices. This merging reduces structural complexity while maintaining both alignment and positioning functions through the unified design of the board alignment device that serves dual purposes during assembly and stacking operations.
2Area of stationary object
If board alignment device and positioning device are separate, then each device can be optimized independently, but space utilization on the bipolar plate deteriorates
Solution Approach 1:
The board alignment device is integrated into the bipolar plate structure itself, utilizing the same structural elements for both alignment during assembly and positioning during stacking. This eliminates the need for additional separate positioning components, thereby maximizing space utilization on the bipolar plate while maintaining manufacturing simplicity through a unified design approach.
3Manufacturing precision
If integrated board alignment device is used, then space is optimized and structure is simplified, but manufacturing precision requirements increase
Solution Approach 1:
The integrated board alignment device incorporates alignment features directly into the bipolar plate structure, such as alignment holes and positioning protrusions that serve both assembly and stacking functions. This unified design simplifies the overall structure by eliminating separate positioning devices while maintaining high alignment precision through the carefully designed geometric features of the integrated components.
Data Source
AI summary
The invention relates to an electrode board, i.e. a cathode board or an anode board, for a bipolar plate (100) of a fuel cell stack, in particular for a fuel cell vehicle, said electrode board comprising a board alignment device (110/120) for aligning this electrode board (101/102) with respect to a second electrode board (102/101) corresponding thereto using the board alignment device (120/110) of the second electrode board during an assembly of the two electrode boards (102/101) to form the bipolar plate (100), wherein the board alignment device (110/120) at least partially forms a section (110/120) of a bipolar plate positioning device (105; 110, 120) of the bipolar plate (100) for stacking the bipolar plate (100) to form a fuel cell stack (10).