Investigation of deformation mechanics and forming limit of thin-walled metallic bipolar plates

Talebi-Ghadikolaee, Hossein; Barzegari, Mohammad Mahdi; Seddighi, Shahaboddin

doi:10.1016/j.ijhydene.2022.10.270

Cited by 12 publications

(4 citation statements)

References 43 publications

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“…Therefore, the analysis of a single channel is sufficient for the evaluation of the deformation on the straight channel section of the BPP [9]. Furthermore, results from simulations conducted by [10] demonstrate that the same effect can be observed on curved channels, suggesting that single feature simulation might be capable of assessing the forming conditions for other features as well.…”

Section: Feature Based Manufacturingmentioning

confidence: 94%

“…Currently, the names of a cross section typical dimensions vary between publications. By examining the terms used in a literature sample, the following observations have been made: L1 is commonly named rib width [9]; L2 usually appears as channel width [10]; α is often named draft angle [9]; for H, channel height and channel depth are used interchangeably [10]; R1 and R2 as channel radii have no standard naming. Some authors describe them in relation to the tool parts (die radius and punch radius [11], respectively), but they do not form a majority within the analyzed sample.…”

Section: Geometrical Description Of Bipolar Platesmentioning

confidence: 99%

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Feature based bipolar plate forming

Meelkop,

Janssen,

Brecher

2024

IOP Conf. Ser.: Mater. Sci. Eng.

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By the end of the 1990s, the global peak of energy supply from oil and gas deposits had already been reached. Since then, there has been a clear trend towards the development of new, more sustainable ways of supplying energy. To realize this reduction, a holistic and rapid restructuring of the energy supply towards CO2-free and renewable energy production, storage and processing across all areas of life is necessary. The development and implementation of a functioning hydrogen economy can be crucial with respect to the goal of climate neutrality. The scale-up and commercialization of technologies for the cost-effective production and use of hydrogen carry significant importance. Accordingly, innovative production technologies and process chains must be developed to be able to manufacture fuel cells reliably in high volumes and at optimized costs. In this context, BPPs in the PEM-FC are responsible for about 80 % of the total weight, just over 50 % of the system volume, and up to 40 % of the total cost. Current research approaches in the field of BPP forming focus mainly on the optimization of a pre-selected production technology. Thereby, the possibility of combining different forming technologies to represent a holistic process chain is mostly disregarded. This research gap is to be closed by the developments within the scope of this work. The bipolar plate is not to be regarded as a coherent component, but as a composition of different geometric features.

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Section: Feature Based Manufacturingmentioning

confidence: 94%

Section: Geometrical Description Of Bipolar Platesmentioning

confidence: 99%

Feature based bipolar plate forming

Meelkop,

Janssen,

Brecher

2024

IOP Conf. Ser.: Mater. Sci. Eng.

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“…Experimental observations revealed that rupture occurred at a channel depth of 0.610 mm. The critical limits for the equivalent strain and thinning rate were determined to be 0.56 and 33.45%, respectively, which can serve as acceptable ranges for plastic deformation during conventional stamping processes of BPs [ 12 ]. Minh et al explored the two-stage forming process of pre-forming and final forming to enhance the formability of metal BPs.…”

Section: Introductionmentioning

confidence: 99%

Investigation into the Three-Stage Formation of Micro-Channels with Ultra-Thin Titanium Sheets Used for Proton-Exchange Membrane Fuel Cell Bipolar Plates

Xie,

Fang,

Wang

et al. 2024

Materials

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Titanium has a low density and high corrosion resistance. In order to achieve the goal of a lightweight material, and to extend the normal working hour of proton-exchange membrane fuel cells (PEMFCs), ultra-thin titanium plates were chosen to manufacture the key components—bipolar plates (BPs). For the purpose of overcoming the challenges of manufacturing with a large depth to width ratio, a multi-stage formation process was established with characteristics such as high efficiency and a lower price. In this study, the process parameters were examined through an experimental approach. The outcomes show that the channel formed by multistage forming is deeper than that formed by single-stage forming under the same displacement conditions. To achieve greater flow depths, it is recommended to increase the displacements as much as possible during both the first- and second-stage forming processes. The implementation of three-stage forming can effectively reduce the maximum thinning rates within flow channels while improving the overall deformation uniformity. This method deviates from traditional one-stage loading processes by adopting multi-stage loading instead. By employing appropriate mold designs, material deformation and flow can be enhanced throughout gradual loading processes, thereby preventing strain concentration and enhancing the ultimate formation height accuracy within micro-flow channels. Consequently, the proposed three-stage forming process proves highly appropriate for the mass production of BPs utilizing titanium plates.

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“…Over recent years, the proton exchange membrane fuel cell (PEMFC) is considered as an appropriate electrical power source compared with internal combustion engines due to its high efficiency, low working temperature, system durability, and low emission [1]. Figure 1 shows the performance of a PEMFC [2].…”

Section: Introductionmentioning

confidence: 99%

Analysis of Formability in Stamping of Metallic Bipolar Plates with Parallel Flow Field for Proton Exchange Membrane Fuel Cells using Adaptive Neuro-fuzzy Inference System

Modanloo,

Mashayekhi,

Akhoundi

2024

IJEE

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Investigation of deformation mechanics and forming limit of thin-walled metallic bipolar plates

Cited by 12 publications

References 43 publications

Feature based bipolar plate forming

Feature based bipolar plate forming

Investigation into the Three-Stage Formation of Micro-Channels with Ultra-Thin Titanium Sheets Used for Proton-Exchange Membrane Fuel Cell Bipolar Plates

Analysis of Formability in Stamping of Metallic Bipolar Plates with Parallel Flow Field for Proton Exchange Membrane Fuel Cells using Adaptive Neuro-fuzzy Inference System

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