Fuel Cell Bipolar Plate Contacting with Guided Positioning
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Solution Overview
Problem
Existing methods for electrically contacting bipolar plates in fuel cell assemblies are inefficient, requiring manual corrections and risking errors or damage due to manufacturing tolerances and complex assembly processes.
Innovation Solution
A device comprising connector elements, a housing, and a separate positioning part that allows for rapid, precise, and efficient electrical contact of bipolar plates, with the positioning part guiding the housing to ensure accurate alignment and contact, reducing the risk of errors and allowing for automated assembly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If manual contacting methods are used for bipolar plates, then flexibility in handling manufacturing tolerances is improved, but productivity and precision deteriorate due to time-consuming manual corrections and increased error risk
Solution Approach 1:
The patent introduces a positioning part as an intermediary component between the connector elements and the bipolar plates. This positioning part includes guide portions that mediate the alignment process, enabling automated contacting while compensating for manufacturing tolerances. The guide portions act as a mediator that guides the connector elements to the correct positions on the bipolar plates, eliminating the need for manual correction while maintaining high precision and speed.
2Manufacturing precision
If complex assembly processes are used to ensure precise contact, then manufacturing precision is improved, but device complexity and ease of manufacture worsen
Solution Approach 1:
The positioning part is designed with pre-formed guide portions that perform the alignment function before the actual contacting operation. The guide portions are preliminarily configured to match the positions of the contacting portions on the bipolar plates, so that when the connector elements are inserted, they are automatically guided to the correct positions. This preliminary configuration of the guide portions eliminates the need for complex real-time adjustment mechanisms during assembly.
3Productivity
If traditional contacting devices are used, then simplicity of device structure is maintained, but productivity and precision deteriorate due to inability to perform rapid automated contacting
Solution Approach 1:
The contacting device is segmented into distinct functional components: connector elements for electrical contact, a housing for support and guidance, and a separate positioning part with guide portions. This segmentation allows each component to be optimized for its specific function - the guide portions handle alignment, the connector elements handle electrical contact, and the housing provides structural support. The modular segmented structure enables automated operation while keeping each individual component relatively simple.
Data Source
AI summary
A device is disclosed for electrically contacting a fuel cell assembly having a plurality of bipolar plates. The device has a plurality of connector elements which are each designed to be electrically connected to a contacting portion of one of the bipolar plates, a housing which has a first guide portion and is designed to at least partly receive the connector elements, and a separate positioning part having a holding portion which is designed to hold each of the contacting portions in its own predetermined position relative to the positioning part, and having a second guide portion which is designed to guide the housing towards the holding portion from a first position into a second position by interacting with the first guide portion. The connector elements which are at least partly received in the housing are, in the first position, spaced apart from the contacting portions which are held by the holding portion and, in the second position, contact the contacting portions which are held by the holding portion.