Abstract: A kit for forming a hopper bottom of a particulate material storage container comprises a generally conical lower section having a tapering diameter from a first end to the second end such that the second end is sized diametrically smaller, and a plurality of arcuate cone segments each defining an inclined concavely curved wall following a generally circular curvature, all of which can collectively form a hopper cone. The arcuate cone segments are connected in an annulus in which the walls of the arcuate cone segments collectively form a generally conical second cone section having a tapering diameter from one end to an opposite end which has a diameter substantially equal to that of the second end of the first cone section. Afterwards, the opposite end of the formed second cone section is connected to the first end of the first cone section so as to form the hopper cone.

Abstract: The invention relates to a fuel cell (1), a fuel cell stack (10) having at least two fuel cells (1), a fuel cell device having a fuel cell stack and a motor vehicle having a fuel cell device. In order to prevent a production-related mispositioning of a membrane electrode assembly (13) of the fuel cell (1) from causing obstructions in the operating media flow, it is provided according to the invention that at least one of the bipolar plates (2, 3) projects farther into an operating media line (4) than the other of the bipolar plates (2, 3).

Abstract: The invention relates to a bipolar plate (10) for a fuel cell (100), comprising—an internal coolant flow field (33), which comprises a coolant channel (43), and—a first and a second flat side (11, 12) with a first and second reactant flow field (31, 32) respectively, which has at least one first and second channel structure (41, 42) respectively, wherein—the first and the second channel structure (41, 42) each form a trunk channel (44) and branch channels (46), wherein the branch channels (46) branch off in a branching region (48) from the respective trunk channel (44), and a first intermediate region (51) is formed between the branch channels (46) of the first channel structure (31), and a second intermediate region (52) is formed between the branch channels (46) of the second channel structure (32), wherein normal projections of the first and second intermediate region (51, 52) onto a center plane (56) of the bipolar plate (10), which center plane is arranged between the two flat sides (11, 12) of the bipol

Abstract: The invention relates to a fuel cell (1), a fuel cell stack (10) having at least two fuel cells (1), a fuel cell device having a fuel cell stack and a motor vehicle having a fuel cell device. In order to prevent a production-related mispositioning of a membrane electrode assembly (13) of the fuel cell (1) from causing obstructions in the operating media flow, it is provided according to the invention that at least one of the bipolar plates (2, 3) projects farther into an operating media line (4) than the other of the bipolar plates (2, 3).

Abstract: The invention relates to a bipolar plate (10) for a fuel cell (100), comprising—an internal coolant flow field (33), which comprises a coolant channel (43), and—a first and a second flat side (11, 12) with a first and second reactant flow field (31, 32) respectively, which has at least one first and second channel structure (41, 42) respectively, wherein—the first and the second channel structure (41, 42) each form a trunk channel (44) and branch channels (46), wherein the branch channels (46) branch off in a branching region (48) from the respective trunk channel (44), and a first intermediate region (51) is formed between the branch channels (46) of the first channel structure (31), and a second intermediate region (52) is formed between the branch channels (46) of the second channel structure (32), wherein normal projections of the first and second intermediate region (51, 52) onto a center plane (56) of the bipolar plate (10), which center plane is arranged between the two flat sides (11, 12) of the bipol

Abstract: A bipolar plate for a fuel cell includes an anode side and a cathode side, wherein in a top view onto the anode side or cathode side: operating medium flow fields include an anode gas flow field situated on the anode side, a cathode gas flow field situated on the cathode side, and an internal coolant flow field, a first supply area and a second supply area situated on diametrically opposite sections of the bipolar plate lateral to the operating medium flow fields, supply ports situated in the first and second supply areas as through openings, an anode gas port for supplying or removing the anode gas, a cathode gas port for supplying or removing the cathode gas, and a coolant port for supplying or removing the coolant, the anode gas port being situated within a supply area between the cathode gas port and the coolant port, and the bipolar plate including or being made of a carbon-based electrically conductive material.