Abstract: A bench for mechanical characterisation of a battery cell by applying a compression force includes a frame having a first compression plate, a movable element having a second compression plate opposite the first compression plate, a compression spring for applying a compression force to the cell between the first and second compression plates, a force sensor inserted between the movable element and the spring, and movement sensors measuring the movement between the first and second compression plates. The first compression plate includes a projecting compression zone with an area equal to a portion of interest of the cell and the frame includes a recess surrounding a thicker frame in the frame forming a pedestal supporting the first compression plate.

Abstract: A bench for mechanically characterising a battery cell by applying a compressive force includes a frame carrying a bottom compression assembly and a top compression assembly, means for applying a compressive force to the cell between the compression assemblies, and a force sensor. Each compression assembly includes a compression part and a mounting surrounding the compression part. The compression part and the mounting are at least partly mechanically dissociated. The mounting of the top compression assembly carries movement sensors that measure the movement between the two mountings.

Abstract: A hydrogen storage tank includes a shell of longitudinal axis, a hydrogen supply and collection duct, and a stack of a plurality of divider elements. Each divider element forms a bottom accepting a hydrogen storage material. The largest transverse dimension of the divider elements is less than the largest transverse dimension of the internal volume of the shell, and the tank includes a plurality of seals in the space formed between the divider element and the shell as a result of the difference in largest transverse dimension.

Abstract: A hydrogen storage tank includes a shell of longitudinal axis, a hydrogen supply and collection duct, and a stack of a plurality of divider elements. Each divider element forms a bottom accepting a hydrogen storage material. The largest transverse dimension of the divider elements is less than the largest transverse dimension of the internal volume of the shell, and the tank includes a plurality of seals in the space formed between the divider element and the shell as a result of the difference in largest transverse dimension.

Abstract: A tank configured to reversibly store hydrogen, including: a plurality of cylindrically shaped casings each containing hydrides and each configured to be filled or emptied by the hydrogen being respectively absorbed or desorbed by the hydrides; a solid part made from thermally insulating material and having a low heat capacity being penetrated, within, by a plurality of cylindrically-shaped slots, the diameter of each of which is greater than that of a casing; a tank in which the casing is housed individually in a slot leaving an annular volume free between same such that to be traversed by a heat transfer fluid, following a defined circuit in each annular volume from an inlet common to all the annular volumes to an outlet which is also common.

Abstract: The invention relates to a tank for storing hydrogen by absorption into a hydrogen-storage material. The tank contains a chamber, a hydrogen feed inlet, a hydrogen discharge outlet, and an inner structure for storing the hydrogen-storage material. The inner structure contains a stack along a longitudinal axis of at least two levels for containing the storage material. Each level includes a distributor cup, a receiver cup for the storage material, and a collector cup. The distributor cups, receiver cups and collector cups are stacked one on top of the other and rigidly and sealingly connected to one another. The invention also relates to a distribution pipe distributing in parallel hydrogen in the distributor cups such that, for each level, hydrogen flows from each distributor cup to the collector cup by passing through the storage material.

Abstract: A hydrogen storage material tank including a shell along a longitudinal axis, a hydrogen supply and collection duct along a longitudinal axis, a stack of plural cups around the duct, wherein each cup includes a base perpendicular to the longitudinal axis, a passage allowing installation of the cup around the duct, an outer wall perpendicular to the base, in contact with the shell and an inner wall perpendicular to the base and in contact with the duct, wherein each cup is force-fitted on the duct and each cup includes a mechanism allowing mutual engagement of the cups in one another by mechanical deformation of free ends of the outer walls of the cups.

Abstract: A tank intended for the storage of hydrogen by absorption into material, including a first part and a second part, each of the first and second parts including a barrel, closed at one first longitudinal end by a substantially hemispherical part, the two parts being joined by the second open longitudinal end of the barrel by an assembly plate, the above-mentioned tank including two heat exchangers, each being contained in one of the two parts and intended to be under the same hydrogen pressure, the above mentioned tank also having apparatus of supply and evacuation of heat transfer medium circulating in the above mentioned heat exchangers integrated in the assembly plate, and apparatus of supply and collection of hydrogen.

Abstract: A reversible H2 storage system includes: a hydrogen storage tank including an enclosure containing metal hydrides incorporated into a heat exchanger having two fluid circuits, referred to as the primary exchanger, a hydrogen circulation circuit, referred to as the first circuit, linked to the inside of the enclosure, to supply or recover the H2 respectively to be absorbed or desorbed by the metal hydrides, the part of the first circuit inside the enclosure forming one of the exchanger circuits, a circuit for the circulation of a heat-transfer fluid, referred to as the second circuit, linked to the exchanger, the part of the second circuit in the exchanger forming the other of the circuits of the exchanger, the first and second circuits being sealed relative to each other, a pressurising device for bringing the pressure value in the second circuit to a value close to that in the first circuit.

Abstract: A tank for hydrogen storage by absorption in a hydrogen storage material includes a shell with a longitudinal axis closed off at its two longitudinal ends, a hydrogen supply and outlet for released hydrogen, and at least one heat transfer element installed transversally in the shell and in contact with the inner surface of the shell. The heat transfer element has an outer peripheral edge formed from tabs in elastic contact with the inner surface of the shell such that contact between the heat transfer element and the shell is maintained during temperature variations during the hydrogen charge and discharge phases. The heat transfer element is designed to provide heat transfers from and to the storage material that will be contained in the tank.

Abstract: A tank for storing hydrogen by absorption in a hydrogen storage material, including: a chamber; a hydrogen supplier to supply hydrogen into the chamber and/or collect hydrogen in the chamber; an inner structure for storing hydrogen storage material, the inner structure including at least two cups, each cup including a base, a side wall, and a closing element forming a volume impermeable to the hydrogen storage material, at least part of each cup being permeable to hydrogen, and the inner structure including a passage provided at least between part of an outer face of the side wall of the cup and an inner face of the chamber.

Abstract: A hydrogen storage material tank including a shell along a longitudinal axis, a hydrogen supply and collection duct along a longitudinal axis, a stack of plural cups around the duct, wherein each cup includes a base perpendicular to the longitudinal axis, a passage allowing installation of the cup around the duct, an outer wall perpendicular to the base, in contact with the shell and an inner wall perpendicular to the base and in contact with the duct, wherein each cup is force-fitted on the duct and each cup includes a mechanism allowing mutual engagement of the cups in one another by mechanical deformation of free ends of the outer walls of the cups.

Abstract: A tank for storing hydrogen through absorption into a material, the tank having a longitudinal axis and including an outer enclosure and an inner structure having a longitudinal axis, including a plurality of stages and a heat exchange system within the inner structure, each stage including a lower bottom, an upper bottom, longitudinal partition walls, and transverse partition walls. The partition walls form with the lower and upper bottoms compartments for receiving the hydrogen storage material. The upper bottom and/or the upper bottom and the transverse partition walls or longitudinal partition walls are made as a single piece.

Abstract: Systems and methods for manufacturing a tank for storing hydrogen in metal hydride powder are disclosed. The tank can include a closed enclosure divided into closed cells. Each of the cells can contain metal hydride powder. Each of the cells can also be manufactured successively by assembling the cells in order to form an open cavity or alveolar cell. One or more bulk pieces of a material capable of forming a metal hydride can be placed in the cavity. The cell can be closed with the bulk pieces by closing the cavity. After cells are closed, hydrogen can be introduced into the tank for transforming the bulk pieces into metal hydride powder.

Abstract: A device for depositing a mixture of powders to form an object with composition gradients, including: a plurality of tanks respectively configured to contain different powders; a powder mixer placed under the tanks and including a rotatably mounted mixing member; a plurality of powder dispensing mechanisms respectively cooperating with the tanks, and each configured to regulate mass flow rate of the powder escaping from a respective of the tanks towards the mixer; a powder mixture collector placed under the mixer; and a powder mixture dispenser placed under the collector.

Abstract: A hydrogen storage tank by absorption into a hydrogen storage material, the tank having a longitudinal axis and including an enclosure and an inner structure provided within the enclosure. The inner structure includes a plurality of stages and a heat exchange system within the inner structure, each stage including a plurality of compartments distributed into a plurality of rows directed along the longitudinal direction, each compartment having a semi-cylindrical shape, and each compartment containing a hydrogen storage material, wherein the material has been introduced through the opening.

Abstract: A tank intended for the storage of hydrogen by absorption into material, including a first part (I) and a second part (II), each of the first (I) and second (II) parts including a barrel (4), closed at one first longitudinal end (4.1) by a substantially hemispherical part (6), the two parts (I, II) being joined by the second open longitudinal end (4.2) of the barrel (4) by means of an assembly plate (2), the above-mentioned tank including two heat exchangers (12), each being contained in one of the two parts (I, II) and intended to be under the same hydrogen pressure, the above mentioned tank also having means of supply and evacuation of heat transfer medium circulating in the above mentioned heat exchangers integrated in the assembly plate, and means of supply and collection of hydrogen.

Abstract: A method of assembling together titanium parts and steel parts by diffusion welding, the method interposing two thin layers of niobium or vanadium and copper respectively between a titanium part and a steel part, evacuating the assembly of parts and interposed metal layers, and subjecting the assembly to hot isostatic compression at a temperature lying in a range 900° C. to 950° C. and at a pressure lying in a range 1000 bars to 1500 bars for about two hours. The method can be applied to fabricating turbine shafts for turbomachines.

Abstract: A tank for storing hydrogen through absorption into a material, the tank having a longitudinal axis and including an outer enclosure and an inner structure having a longitudinal axis, including a plurality of stages and a heat exchange system within the inner structure, each stage including a lower bottom, an upper bottom, longitudinal partition walls, and transverse partition walls. The partition walls form with the lower and upper bottoms compartments for receiving the hydrogen storage material. The upper bottom and/or the upper bottom and the transverse partition walls or longitudinal partition walls are made as a single piece.

Abstract: A hydrogen storage tank by absorption into a hydrogen storage material, the tank having a longitudinal axis and including an enclosure and an inner structure provided within the enclosure. The inner structure includes a plurality of stages and a heat exchange system within the inner structure, each stage including a plurality of compartments distributed into a plurality of rows directed along the longitudinal direction, each compartment having a semi-cylindrical shape, and each compartment containing a hydrogen storage material, wherein the material has been introduced through the opening.