Arrangement for a vehicle comprising two tanks and a common valve.

Abstract

Arrangement for a vehicle comprising two tanks and a common valve. The invention relates to an arrangement (2) for a vehicle (1) comprising a first tank (10) for storing an energy fluid and a second tank (20) for storing said energy fluid, a common valve (30) for the energy fluid contained in the first and second tanks, the valve (30) being intended to discharge energy fluid in the event of overpressure in the first and / or in the second tank (10, 20). Figure for abstract: figure 2

Description

Title of the invention: Arrangement for a vehicle comprising two tanks and a common valve. Technical field of the invention

[0001] The invention relates to an arrangement for a vehicle comprising a first tank and a second tank intended to store an energy fluid, in particular hydrogen, and a valve common to both tanks. The invention also relates to a body for a vehicle, in particular for a motor vehicle, comprising such an arrangement. The invention also relates to a vehicle, in particular a motor vehicle, comprising such a body or such an arrangement. State of the prior art

[0002] In order to make the use of vehicles less polluting, vehicles are known that are equipped with a fuel cell powered by hydrogen. These vehicles therefore have a tank in which dihydrogen is stored before being consumed by the fuel cell. The fuel cell provides electrical energy that can be consumed directly by an electric motor to move the vehicle forward, or else be stored in an electrochemical battery on board the vehicle.

[0003] The pressure of the hydrogen in the tank can be very high, for example of the order of 700 bars. The tank must therefore be particularly resistant to the mechanical stresses exerted by pressurized hydrogen. In addition, hydrogen is a highly flammable gas which can cause a fire and / or an explosion in the event of a leak. Hydrogen tanks must therefore also be shock-resistant, so as to guarantee the safety of passengers in the event of a vehicle accident. Tanks known from the state of the art generally take the form of one or more heavy cylinders on board the vehicle. Such cylinders are particularly bulky and complex to integrate within the vehicle.In addition, such a cylinder has at least one filling valve, for example a filling valve also having a discharge function, i.e. capable of evacuating such a fluid in the event of overpressure, and a second valve solely dedicated to discharge for safety reasons. Such valves are found protruding, generally at each end of such cylinders. Such valves are points of weakness in the event of an accident or collision generating deformations of such a vehicle. In addition, pipes, possibly under pressure and containing hydrogen, are connected to such protruding valves.

[0004] Thus, the presence of such cylinders on a damaged vehicle results in risks of ignition and / or explosion which may have consequences for the occupants of such a vehicle and the surrounding environment, in particular people coming to the assistance of the occupants such as emergency services. Such vehicles therefore present risks following accidents or collisions damaging such cylinders, such valves, and / or such pressurized fluid pipes.

[0005] On the other hand, the autonomy of such a vehicle is limited by the quantity of hydrogen that these cylinders are capable of storing. To increase the autonomy of a vehicle, the volume of each cylinder is increased or the number of cylinders on board is increased. Such a solution penalizes the volume available for transporting passengers and / or a load. The vehicles known from the state of the art therefore present a poor compromise between autonomy, space available for passengers and / or for loading objects, and their size. Presentation of the invention

[0006] The object of the invention is to provide an arrangement for a vehicle which overcomes the above drawbacks and improves the high pressure tanks known from the prior art.

[0007] More specifically, an object of the invention is to provide an arrangement for storing an energy fluid which is compact, which allows a large quantity of energy fluid to be stored, which improves safety, particularly during an accident, while being easy to manufacture. Summary of the invention

[0008] To achieve this objective, the invention relates to an arrangement for a vehicle comprising: a first tank intended to store an energy fluid, in particular di-hydrogen, and a second tank intended to store said energy fluid, a common valve for the energy fluid contained in the first and second tanks, the valve being intended to discharge energy fluid in the event of overpressure in the first and / or in the second tank.

[0009] The arrangement may further comprise a fastening element for fastening the valve relative to the first and second reservoirs.

[0010] The fixing element may comprise three branches, in particular having an overall Y shape, two branches each being able to comprise a through hole, the third branch being able to comprise an axial hole, in particular threaded, for fixing the valve, each through hole and the axial hole being able to allow the diffusion of such an energetic fluid towards the valve, the axial hole and the two through holes being able to com- communicate with each other.

[0011] The arrangement may further comprise: - a first temperature sensor which can be fixed, in particular by screwing, in a first wall of the first tank, and - a second temperature sensor which can be fixed, in particular by screwing, in a second wall of the second tank, each through hole being able to be crossed by a fixing screw capable of diffusing such an energetic fluid from an axial end of the screw to a cylindrical surface under the head of the screw, each fixing screw being able to be screwed into each temperature sensor and being able to ensure the fixing of the fixing element relative to the first and second reservoirs.

[0012] The first reservoir and the second reservoir may be positioned and / or shaped relative to each other so as to form a recess within which the valve extends.

[0013] The first and second reservoirs may each have a flat or substantially flat rear face extending in the same plane, in particular vertical and transverse, the first and second walls being able to create the recess between the first and second walls and the plane.

[0014] The first and second reservoirs may be secured to each other.

[0015] The first and second tanks may each comprise a rigid structure intended to form part of a structure of an underbody of such a vehicle.

[0016] The first and second tanks may be arranged side by side on either side of a plane extending vertically and longitudinally or substantially vertically and longitudinally, in particular the median plane of such a vehicle.

[0017] The first and second tanks can be obtained at least partially from composite material, in particular from composite material comprising fiberglass and / or carbon fiber and / or Kevlar fiber (registered trademark).

[0018] The invention also relates to a body for a vehicle, in particular for a motor vehicle, comprising an arrangement as defined above.

[0019] The invention also relates to a vehicle, in particular a motor vehicle, comprising a body as defined previously, or an arrangement as defined previously. Presentation of figures

[0020] These objects, characteristics and advantages of the present invention will be explained in detail in the following description of a particular embodiment made without limitation in relation to the attached figures among which:

[0021] [Fig.l] is a schematic side view of a motor vehicle comprising a arrangement according to one embodiment of the invention.

[0022] [Fig.2] is a perspective view of an arrangement according to one embodiment of the invention.

[0023] [Fig.3] is a rear view of the arrangement according to the embodiment of the invention.

[0024] [Fig.4] is a top view of the arrangement according to the embodiment of the invention.

[0025] [Fig.5] is a partially exploded view of the arrangement according to the embodiment of the invention.

[0026] [Fig.6] is a detailed perspective view of the arrangement according to the embodiment of the invention.

[0027] [Fig.7] is a sectional view along a transverse and longitudinal plane passing through the axes of the first and second temperature sensors of the arrangement according to the embodiment of the invention.

[0028] [Fig.8] is a front view of a fixing element of the arrangement according to the embodiment of the invention.

[0029] [Fig.9] is a sectional view along a vertical and longitudinal plane passing through the axis of a valve of the arrangement according to the embodiment of the invention.

[0030] [Fig. 10] is a sectional view along a vertical plane passing through the axis of the second temperature sensor of the arrangement according to the embodiment of the invention. Detailed description

[0031] [Fig.l] schematically illustrates a vehicle 1, for example a motor vehicle, according to one embodiment of the invention. The vehicle 1 may be, for example, a private vehicle or a utility vehicle. Alternatively, it could be a truck, a bus, a lifting machine, an agricultural machine or even any other type of land vehicle. The invention may also be adapted to an aircraft or a boat.

[0032] In this document, the X axis designates the longitudinal axis of the vehicle 1. When moving forward and in a straight line, the vehicle 1 moves from the rear to the front in a direction parallel to its longitudinal axis. The X axis is oriented from the front to the rear of the vehicle, that is to say in the direction of reverse travel. The Y axis designates the transverse axis of the vehicle. The Y axis is oriented from left to right, left and right being defined according to the point of view of a driver of the vehicle 1. The Z axis designates the axis perpendicular to the X axis and the Y axis. It is considered that the vehicle 1 is resting on horizontal ground. The Z axis is a vertical axis, oriented from bottom to top. The X, Y and Z axes form a direct orthogonal reference frame. This reference frame defined in relation to the vehicle 1 may be used to describe an arrangement 2 of the vehicle 1, even considered outside the vehicle, since arrangement 2 is intended to be integrated into the vehicle in a particular orientation.

[0033] The vehicle 1 comprises the arrangement 2 according to one embodiment of the invention. The vehicle 1 further comprises a body 3, preferably a body 3 comprising a base 8.

[0034] The vehicle 1, or the body 3, or the arrangement 2, comprises a first tank 10 and a second tank 20 separate from the first tank 10. The first tank 10 and the second tank 20 are intended to store the same energy fluid, preferably hydrogen. The vehicle 1 then preferably comprises a fuel cell 5 capable of transforming hydrogen into an electric current, and an electric motor 6 powered by an electric current from the fuel cell 5. The electric motor 6 is arranged to drive at least one drive wheel of the vehicle 1. The vehicle 1 further comprises a chassis supporting, among other things, the arrangement 2, the fuel cell 5 and the electric motor 6. Advantageously, the vehicle 1 further comprises a battery 7.The fuel cell 5 therefore provides electrical energy which can be consumed directly by the electric motor 6 to move the vehicle forward, or stored in the electrochemical battery 7 on board the vehicle.

[0035] According to the illustrated embodiment, the tanks 10, 20 are therefore intended to store hydrogen or more precisely dihydrogen. According to other variants, the tanks could be configured to store other forms of energy gases, for example liquefied petroleum gas or natural gas. The tanks could even be intended to store a liquid fuel such as gasoline, diesel or even ethanol. In such a hypothesis, the vehicle could comprise a combustion engine capable of transforming the energy of the energy fluid into motive force.

[0036] Generally speaking, the tanks 10, 20 are intended to contain an energy fluid, that is to say a fluid forming a reserve of fluid energy, convertible into a force capable of moving the vehicle. Each tank 10, 20 is therefore a component of the vehicle 1 which gives it a certain autonomy. Each tank 10, 20 comprises in particular an inlet opening allowing the tank to be filled with an energy fluid and an outlet opening for delivering and then consuming the energy fluid contained in the tank.

[0037] The tanks 10, 20 are intended to store the energy fluid under pressure, that is to say at a pressure strictly higher than atmospheric pressure. In this case, the tanks are intended to store the energy fluid at a pressure greater than or equal to 700 bars. Alternatively, the tanks could be intended to store the energy fluid at a different pressure, for example a pressure higher than greater than or equal to 300 bars, or 500 bars, or 1000 bars, or any other value. Each tank thus comprises a rigid structure capable of withstanding the forces exerted by the pressurized fluid it contains, that is to say centrifugal forces acting from inside each tank and which tend to cause it to burst.

[0038] In addition, each tank may have a capacity greater than or equal to 20 liters, preferably greater than or equal to 50 liters, or even greater than or equal to 100 liters. A 100-liter tank can store approximately 4 kg of hydrogen at 700 bars, which gives a motor vehicle a range of around 300 km.

[0039] The structure of each tank 10, 20 is also capable of withstanding significant impacts, in particular impacts occurring in the event of an accident of the vehicle 1, without generating any leakage of the energy fluid to the outside at the level of this structure. Accident data and / or simulations and / or crash tests make it possible to size the structure, in particular the required wall thicknesses, so that no leakage of energy fluid occurs, even for the most violent accidents.

[0040] Advantageously, each tank, the high strength of which is necessary to withstand high pressures of the energy fluid it contains, as well as to guarantee the safety of the passengers of the vehicle 1 in the event of an accident, can be used to stiffen the structure of the vehicle. Thus, each tank 10, 20 is capable of supporting the weight exerted by other equipment of the vehicle, and also provides a support for fixing this equipment. In particular, each tank 10, 20 is capable of supporting loads which can reach at least one hundred kilograms, or even several hundred kilograms. These loads can be static loads such as those exerted by the weight of equipment such as vehicle seats and / or the weight of the passengers of the vehicle. These loads can also be dynamic loads such as those which appear in particular situations such as during an impact against the vehicle.These different static or dynamic loads can exert compressive or shear forces on each tank. These forces are therefore oriented in a different direction from the centrifugal forces exerted by the pressurized energy fluid inside each tank. Advantageously, the resistance of each tank necessary to resist the pressure exerted by the energy fluid it contains is therefore also used to support loads which are exerted in different directions. Each tank is typically a polymorphic structural tank made of composite materials using a weaving process similar to that presented in document FR 2 888 915 AL Each tank may comprise internal reinforcement wells which pass through the interior volume of the tank and which connect two by two of the opposite walls of the tank so as to secure them together. This structure, this geometry, . and the materials used ensure mechanical support for each tank suitable for receiving high-pressure gases, in particular for containing hydrogen. Each tank having a rigid structure, it can therefore be used as a structural element of the vehicle, in addition to the conventional structural elements of the vehicle underbody. In other words, the first and second tanks 10, 20 each comprise a rigid structure that can form part of a structure of the underbody 8 of the vehicle 1. Advantageously, the structure of each tank is made of composite material. Such a material is lighter than steel and even than any other metal for equivalent strength. In addition, the methods for manufacturing components made of composite material make it possible to produce structures with a wide variety of geometric shapes.More complex structural shapes than those obtained in metal can thus be considered in order to exploit all available volume of the vehicle and thus increase the capacity of the tank. More complex tank shapes can in particular be recommended when the tanks are intended to store a gas under pressure rather than a liquid because, unlike a liquid, the gas does not present a risk of retention in the tank.

[0041] The composite material may comprise a draped or preformed structure, and / or woven and / or braided materials impregnated with resin. The composite material may be formed from reinforcing elements and a matrix. The reinforcing elements may comprise carbon fibers and / or glass fibers, which are lightweight materials, or Kevlar (registered trademark) which has greater impact resistance. The matrix may be an organic matrix, for example epoxy resin, phenolic resin or a modified polyester. The matrix may also be a metal matrix.

[0042] Preferably, the tanks 10, 20 are arranged in the rear part of the vehicle 1, in particular at the level of a rear part of a base of the vehicle. The tanks 10, 20 extend for example under a row of rear seats of the vehicle and / or under a trunk of the vehicle, or even up to the level of a rear bumper of the vehicle. The tanks 10, 20 can thus be intended to support the load exerted by the rear seats and all of the objects stored in the trunk of the vehicle.

[0043] According to an embodiment illustrated in particular in [Fig. 2], the second tank 20 comprises a shape symmetrical to the shape of the first tank 10. In particular, the second tank 20 comprises a shape obtained by symmetry of the shape of the first tank 10 with respect to a plane extending parallel to the longitudinal axis X and to the vertical axis Z, preferably the median plane M of the vehicle. The median plane M passes through a center of the vehicle along the transverse axis Y. The design and manufacture of the second tank and / or of the interfaces cooperating with the second reservoir is thus facilitated when the first reservoir and / or interfaces cooperating with the first reservoir are already available. According to an alternative embodiment not illustrated, the second reservoir could have a shape identical to the shape of the first reservoir.

[0044] The first tank 10 is positioned on the left side of the vehicle and the second tank 20 is positioned on the right side. In a variant not shown, this configuration could be reversed.

[0045] In this document, the qualifiers “first” and “second” used only serve to distinguish the two reservoirs 10, 20 from one another and do not in themselves confer any particular characteristic to said reservoirs. In the same way, the qualifiers “first” and “second” used only serve to distinguish the two temperature sensors 50, 60 from one another and do not in themselves confer any particular characteristic to said sensors. Similarly, the qualifiers “first” and “second” used only serve to distinguish two walls 11, 21 from one another and do not in themselves confer any particular characteristic to said walls.

[0046] Preferably, as illustrated in Figures 2, 3, 4, 5, 6 and 7, the two reservoirs 10, 20 are positioned next to each other. For example, the two reservoirs are in direct contact with each other.

[0047] For example, the first tank 10 comprises a right lateral face, parallel to the axes X and Z, bearing against a left lateral face, also parallel to the axes X and Z, of the second tank 20. The right lateral face of the first tank 10 and the left lateral face of the second tank 20 are flat or substantially flat faces. The two tanks 10, 20 can then be in surface contact, as opposed to linear or point contact. Preferably, no structural element of the vehicle, in particular no element of the vehicle body, is interposed between the two tanks 10, 20 at these two facing lateral faces.

[0048] According to the illustrated embodiment, the contact surface between the two reservoirs extends parallel to the longitudinal axis X and the vertical axis Z. Alternatively, the contact surface between the two reservoirs could extend parallel to the transverse axis Y and the vertical axis Z, or parallel to the transverse axis Y and the longitudinal axis X. Alternatively again, the contact surface between the two reservoirs could extend parallel to a plane other than the three planes specified previously. Alternatively again, the contact surface between the two reservoirs could be non-planar. The contact surface could for example comprise a stepped shape and / or a curved shape.

[0049] An advantage of providing a contact surface between the first tank and the second tank lies firstly in the fact of not losing any free space between the two tanks. The volume for housing the two tanks is therefore minimized. Optionally, the rigidity of one tank reinforces the rigidity of the other tank to form a more robust assembly. According to one embodiment, the wall(s) of one tank in contact with the other tank could be thinned without penalizing the strength of the association of the two tanks because the thinned wall would be supported by the wall of the other tank, itself potentially also thinned. Indeed, preferably, the two tanks are also fixed to each other. The rigidity of the first tank is thus advantageously used to hold the second tank, and vice versa. The two tanks 10, 20 thus form a single-piece assembly which can be mounted as such in the vehicle 1, in particular at the level of the underbody 8. It is thus possible to simplify the fixing of the two tanks compared to a solution where each tank would be fixed independently of the other to the chassis at the level of the underbody preferably.

[0050] To manufacture a vehicle 1 provided with the arrangement 2, the two tanks can first be fixed to each other, then the resulting assembly can be fixed to the chassis of the vehicle.

[0051] The tanks can be isolated from the passenger compartment by a simple protective element, for example made of plastic, which covers their upper face. It is not necessary to provide a structural element between the tanks and the vehicle seats and / or the trunk floor, above the tank, since the tanks, in particular assembled, fixed, bolted together, have sufficient strength to support the weight of the seats and passengers sitting on these seats and / or the loads which can be stored in the trunk.

[0052] More specifically, as illustrated particularly in Figures 2, 3, 5, 6, 9, and 10, the arrangement 2 further comprises a valve 30, or flap, or relief valve, preferably for discharge or decompression. The valve 30 is common for the energy fluid contained in the first and second reservoirs 10, 20. Thus, the valve 30 is intended to evacuate energy fluid in the event of overpressure in the first reservoir 10 or in the second reservoir 20, or even in both reservoirs simultaneously. Indeed, as will be explained later, the valve 30 communicates with the two reservoirs 10, 20 so that if overpressure appears in one or the other or both reservoirs, the valve 30 is able to lower this overpressure by evacuating a portion of the energy fluid contained in these reservoirs to the outside.

[0053] Advantageously, the arrangement 2 further comprises a fixing element 40, a support, an interface, for fixing the valve 30 relative to the first and second reservoirs 10, 20. In the embodiment illustrated in particular in FIGS. 3, 5, 6, 7, 8 and 9, the fixing element 40 comprises three branches 41, 42, 43. Preferably, the general, overall shape of the fixing element 40 is a Y. As illustrated in [Fig. 6] in particular, the fixing element 40 comprises the upper branch or extension or protrusion or projection 41 on the left, and the upper branch or extension or protrusion or projection 42 on the right. Each branch on upper 41, 42 preferably has a flattened shape so as to cooperate with a screw head 443 as will be seen later. The fixing element 40 comprises the third branch or extension or protuberance or lower projection 43, preferably cylindrical or substantially cylindrical, extending for example in the vertical direction.

[0054] As illustrated in particular in Figures 7 and 8, each branch 41, 42 comprises a through hole 44. Thus, each branch is crossed right through by each through hole 44.

[0055] As illustrated in particular in Figures 8 and 9, the third branch 43 comprises an axial hole 46. The axial hole 46 is preferably at least partially tapped, that is to say comprises a tapping 47. The tapping 47 makes it possible in particular to fix the valve 30. In this case, the valve 30 comprises a thread 37 intended to cooperate with the tapping 47 for fixing the valve 30 on the fixing element 40.

[0056] As illustrated in particular in Figures 8 and 9, the axial hole 46 of the third branch 43 and the two through holes 44 of the branches 41, 42 communicate with each other. For this, an axial conduit or hole or bore 48 is provided as an extension of the axial hole 46 of the third branch 43. In addition, a bore or hole or pipe 45 is provided between the two through holes 44 so as to connect, to make communicate, the two through holes 44 together. The axial conduit 48 and the pipe 45 join, communicate, open into each other. Thus, the axial hole 46 opens into the conduit 48 which itself opens into the bore 45, the bore 45 joining the two through holes 44.

[0057] Thus, in the case of energy fluid reaching the level of the through hole 44 opposite a first wall 11 of the first reservoir 10, the fluid communicates towards the other through hole via the pipe 45 (and consequently within the second reservoir 20) and towards the valve 30 via the axial conduit 48 joining the axial hole 46. Obviously, in the case of energy fluid reaching the level of the through hole 44 opposite a second wall 21 of the second reservoir 20, the fluid communicates towards the other through hole via the pipe 45 (and consequently within the first reservoir 10) and towards the valve 30 via the axial conduit 48 joining the axial hole 46. Indeed, each through hole 44 of each branch 41, 42 and the axial hole 46 cause the valve 30 to capture, undergo, the same pressure as that present simultaneously in the two tanks.

[0058] For example, the pipe 45 and / or the axial conduit 48 have a small diameter, for example between 0.5 mm and 3 mm. Indeed, given the pressure within the reservoirs, a small section is sufficient to allow the propagation of the fluid from a through hole 44 to the hole 46 receiving the valve 30, and if necessary, to allow the evacuation of the fluid by the action of the valve 30 in the event of overpressure. Preferably the sections of the pipe 45 and the axial conduit 48 are circular so as to facilitate their obtaining, in particular by a machining process such as drilling.

[0059] Advantageously, for fixing the fixing element 40 for the valve 30 on the tanks, advantage is taken of the presence of temperature sensors. Thus, the arrangement 2 further comprises a first temperature sensor 50 fixed in the first wall 11 of the first tank 10. The arrangement 2 further comprises a second temperature sensor 60 fixed in the second wall 21 of the second tank 20.

[0060] Preferably, as illustrated in Figures 5 and 7 in particular, each sensor has substantially the shape of a bored screw, drilled axially, and is capable of being screwed in by comprising a thread and an imprint at the level of a head 53, 63, for example a hexagon to facilitate its mounting by screwing. Each sensor 50, 60 further comprises a thread 51, 61 at its head 53, 63. As illustrated in FIGS. 7 and 10, an axial end 52, 62 of each sensor 50, 60 is drilled to communicate with the interior of each respective tank 10, 20. Each sensor 50, 60 further comprises an internal conduit 55, 65, preferably axial and centered on the axis A50, A60 of the corresponding sensor connected to the drilled axial end 52, 62. In addition, the internal conduit 55, 65 communicates, opens at a bore 56, 66 of each sensor in which the thread 51, 61 is provided for screwing the screws 440.

[0061] Advantageously, as illustrated in particular in [Fig.7], the first wall 11 comprises a threaded insert 14 and the second wall 21 comprises a threaded insert 24. For example, each threaded insert 14, 24 is fixed by gluing within each wall 11, 21. Optionally, each threaded insert comprises a thread allowing it to be screwed within each wall. In this case, preferably, the pitch of the thread and the pitch of the tapping are different, in particular to take into account the difference in material between the tank walls (composite materials) and the sensors (preferably steel, for example stainless steel). An application of glue is preferably provided during the assembly of the temperature sensors on the tanks, in particular to ensure perfect sealing.

[0062] Alternatively, each temperature sensor is screwed directly into the wall of the corresponding tank, the wall possibly being tapped beforehand. In this case, preferably, an addition of glue is provided during assembly, in particular to ensure perfect sealing.

[0063] Regarding the fixing of the fixing element 40, as illustrated in particular in Figures 7 and 10, a screw 440 passes through each through hole 44 provided in each branch 41, 42 of the fixing element 40. Each screw 440 is screwed into each thread 51, 61 of the respective temperature sensors. Preferably, the axes A440 of each screw 440 and the axes A50, A60 of each respective sensor and the axes A44 of each respective through hole 44 are merged or substantially merged. Thus, the fixing element 40 is sandwiched between the head 443 of each screw, more precisely under the head 443, and an annular face 54, 64 of each sensor 50, 60 illustrated in particular in [Fig.5]. Thus, a cylindrical part 442 of a screw 440 passes through the through hole 44 formed in the branch 41 and is fixed in the first sensor 50 and a cylindrical part 442 of the other screw 440 passes through the through hole 44 formed in the branch 42 and is fixed in the second sensor 60.

[0064] Note that each fixing screw 440 comprises an internal pipe, a conduit, for example comprising an axial conduit 444 and a radial conduit 445. As illustrated in [Fig. 10], the radial conduit 445 preferably passes right through the cylindrical part 442 at the axis A440 of the screw. The axial conduit 444 opens into the radial conduit 445 and vice versa. For example, the fixing screws 440 are of the same type as those used in a hydraulic braking circuit to fix a pipe end to a master cylinder or to a caliper. Thus, an axial end 441 of the screw 440 communicates up to the cylindrical part or surface 442 under the screw head 443.

[0065] Thus, thanks to this assembly comprising the screws 440, the fixing element 40 and the sensors 50, 60, the energy fluid communicates from the inside of each tank to the valve 30. Indeed, each sensor 50, 60 communicates with the inside of each tank 10, 20 at which it is fixed via their respective internal conduit 55, 65. The energy fluid communicates within the screws 440 via the axial and radial conduits 444, 445 opening, on the tank side, into the internal conduits 55, 65 of the sensors and opening into the holes 44 on the side of the fixing element 40, via the cylindrical surface 442 pierced right through. To allow this passage or transfer from the interior of the screw 440 to the corresponding through hole 44, the diameter of each hole 44 is slightly greater than the diameter of the cylindrical portion or cylindrical surface 442 of the screw 440.Seals, for example O-rings, are judiciously interposed to guarantee sealing at this level. Given the conduit 45 connecting the two through holes 44 and the presence of the axial conduit 48 connected on one side to the conduit 45 and on the other side to the axial bore or hole 46 intended to receive the valve 30, the valve communicates with the interior of each tank so that the energy fluid communicates permanently with the valve.

[0066] Thus, the fixing element 40 makes it possible to fix the valve relative to the two tanks, by means of the sensors screwed into each tank, while allowing communication, diffusion, of the fluid from the interior of the tanks to the valve 30.

[0067] As illustrated in particular in Figures 2, 4, 6 and 7, the first reservoir 10 and the second reservoir 20 are positioned relative to each other so as to form a recess 70. More specifically, the two reservoirs are shaped and positioned to form the recess or cavity or recess 70.

[0068] For example, as illustrated in particular in Figures 2 and 4, the first and second reservoirs 10, 20 each have a generally parallelepiped shape. The first reservoir 10 is arranged on the left. The first reservoir 10 then comprises a vertically extending right rear edge that is beveled. This bevel constitutes the first wall 11. As a reminder, the first wall 11 receives the first sensor 50. The first receiving wall 11 extends vertically. The second reservoir 20 is arranged on the right. The second reservoir 20 then comprises a vertically extending left rear edge that is beveled. This bevel constitutes the second receiving wall 21. As a reminder, the second wall 21 receives the second sensor 60. The second wall 21 extends vertically. In this case, the recess 70 has substantially the shape of a prism extending in the vertical direction and having an isosceles triangle as its base.Such an isosceles triangle has sides of equal length the intersections of the two walls 11, 21 with a plane extending transversely and longitudinally. Indeed, as illustrated in particular in [Fig. 4], the first reservoir 10 has a rear face 15 that is flat or substantially flat extending in a plane P. The second reservoir 20 has a rear face 25 that is flat or substantially flat also extending in the plane P. Preferably, the plane P is parallel to the vertical axis Z and to the transverse axis Y. The first and second walls 11, 21 then create the recess 70 between the first and second walls 11, 21 and the plane P. The recess 70 makes it possible to house the valve 30, and preferably the fixing element 40, the projecting parts of the sensors 50, 60, in particular their heads 53, 63, and finally the screw heads 443.Preferably, there is clearance between all these mounted elements and the plane P so as to maintain additional safety in the event of a rear impact as will be seen later.

[0069] According to the embodiment presented, the arrangement 2 comprises two and only two juxtaposed tanks. According to other variant embodiments of the invention not illustrated, the arrangement could comprise a greater number of juxtaposed tanks and a fixing element of a common valve for all the tanks would be shaped according to their geometric shapes. An advantage of using at least two juxtaposed tanks instead of a single tank of equivalent size to all the juxtaposed tanks is to simplify the manufacture of the tanks. Indeed, a large tank requires very large industrial means to be able to be mass-produced. Its manufacture is therefore particularly complex and expensive.This is particularly true when the tanks are made of composite materials because the manufacture of tanks with such materials requires passing blanks of these tanks through specific manufacturing tunnels. The use of several tanks, each of smaller dimensions, advantageously allows for the reduction of the size of the manufacturing tunnels required to manufacture composite tanks. In addition, dies or molds are sometimes used and it turns out that the smaller such a die is, the less expensive it is, particularly because it requires less material and less machining if necessary.

[0070] [Fig.4] illustrates the tanks 10, 20. The two adjoining tanks extend over a large part of the width of the vehicle 1. Preferably, the first tank 10 is fixed to a left support 4G intended to be fixed on a left side member and the second tank 20 is fixed to a right support 4D intended to be fixed on a right side member. Preferably, it is the tanks which act as reinforcement of the structure on the rear of the vehicle. Note that recesses, or indentations, or gaps, or notches 9G, 9D are provided within the supports 4G, 4D at the front of the tanks so as to protect the refill or filling valves 31, 32, possibly with an overpressure relief function, fitted to each tank. Thus, in the event of a side impact at this level, in particular during a post impact, the valves 31, 32 are protected by the spaces 9G, 9D allowing deformation of the side members and / or supports 4G, 4D without any consequences for the valves.In other words, a safety space is provided within the 4G, 4D side supports.

[0071] Optionally, a shock crossmember is arranged behind the rear faces 15, 25. The rear shock crossmember (not shown) is preferably connected, fixed to the rear faces 15, 25 of the tanks. Thanks to the recesses 70, the valve 30, the sensors 50, 60 as well as their fixing means, namely the screws 440 and the fixing element 40, are protected, in particular by the great robustness of the tanks which prevents any reduction or crushing of the space 70.

[0072] Thanks to the solution, in the event of one of the two tanks failing, only the faulty one is replaced, which is economical compared to replacing a single tank that is very bulky and therefore very expensive to produce. Advantageously, as illustrated in [Fig. 4], a temperature sensor 33 is housed at the refill valve 31 of the tank 10 and a temperature sensor 34 is housed at the refill valve 32 of the tank 20. Thus, an abnormally high temperature is detected on the first tank 10 by the sensor 33 and / or by the first sensor 50, the two sensors 33, 50 being substantially distant from the length of the diagonal D of the tank 10. An abnormally high temperature is detected on the second tank 20 by the sensor 34 and / or by the second sensor 60, the two sensors 34, 60 also being substantially distant from the length of the diagonal of the tank 20.

[0073] Advantageously, a discharge valve 35 capable of letting fluid escape energy fluid from the first reservoir 10 is also housed at the refill valve 31, and respectively, a discharge valve 36 capable of letting energy fluid escape from the second reservoir 20 is also housed at the refill valve 32. Thus, the evacuation of energy fluid in the event of overpressure and / or detection of high temperature can be done either at the refill valve 31 by the valve 35, or at the valve 30 for the first reservoir 10. In the same way, the evacuation of energy fluid in the event of overpressure and / or detection of high temperature can be done either at the refill valve 32 by the valve 36, or at the valve 30 for the second reservoir 20. Preferably, it is the valve closest to the heating zone which is actuated to lower the pressure by discharging energy fluid to the outside.Optionally, a first supply to the fuel cell 5 is provided at the valve 31 and a second supply to the fuel cell 5 is provided at the valve 32. For example, at least one pipe is provided for filling under pressure for each tank and at least one pipe is provided for supplying the cell from each tank. Such pipes may optionally be arranged, at least partially, in front of a front face 73 of the double tank since this front face is not very exposed in the event of an impact or accident suffered by the vehicle.

[0074] Thanks to the solution, regardless of the discharge valve 30, 35, 36 requested to lower the pressure, the pressure is lowered automatically and simultaneously in the two tanks since the fixing element 40 associated with the temperature sensors 50, 60 and the two screws 440 allow the communication of the energy fluid between the two tanks 10, 20. As a reminder, the internal conduits 55, 65 of the sensors 50, 60 communicate with the internal storage space of each tank 10, 20. The conduits 55, 65 also communicate with the axial conduits 444 of the screws 440. The conduits 444 communicate with the radial conduits 445. The conduits 445 open into the cylindrical surfaces 442, these being close to the through holes 44.The through holes 44 communicate with the cylindrical surfaces 442 due to the difference in diameter between the holes 44 and the cylindrical surfaces 442 of the screws 440 and the judicious interposition of seals, for example O-rings preferably arranged in grooves made in the surfaces 442 and / or in the holes 44. Thanks to the conduit 45 between the two holes 44 which communicates with the axial conduit 48 of the fixing element 40, the fluid reaches the bore 46 receiving the discharge valve 30 (see figures 7, 8, 9 and 10 in particular). Thus, whether the valve 30 is closed (normal operation of the storage of the tanks) or the valve is open (malfunction of the overpressure type requiring the evacuation of energy fluid to the outside), the passage 45 of the fixing element 40 makes com- . provide the two tank storage areas.

[0075] Note that the fastening element 40 is for example obtained from stainless steel or from a material having similar properties. Optionally, the screws 440 may have an internal imprint in their head 443 in addition to the external imprint which is for example of the conventional hexagon type. Thus, a higher torque can easily be transmitted during tightening (and loosening) without risking damaging, or damaging, the external imprint. Optionally, this may allow the use of lower-range materials for such screws, i.e. a less expensive material.

[0076] For example, the angle a extending between the two walls 11, 21, as illustrated in [Fig. 4], is between 90 degrees and 150 degrees, preferably 120 degrees or close to 120 degrees. Such an angle allows the insertion and screwing of the temperature sensors 50, 60 and the screws 440 also, in particular at each branch 41, 42 of the Y-shaped fixing element. Indeed, it is necessary to preserve space for the heads 443 and any clamping sleeves encompassing these screw heads. Concerning these screws 440, preferably their head is wide so as to facilitate obtaining a seal between the annular surfaces 54, 64 and the underside of the heads 443 of the screws 440. In any event, preferably, one or more O-rings are provided between the cylindrical surface 442 and the through hole 44 in which the cylindrical surface is housed.

[0077] Optionally, as illustrated in [Fig.7], the arrangement 2 comprises a shim 75 extending in a vertical and longitudinal plane at the level of the contact surface of the two reservoirs 10, 20. The shim 75 is provided to adjust the gap between the two axes A50, A60 of the sensors, and consequently between the axes of the two screws A440, in order to come to agree, adapt, align with the axes A44 of the two through holes 44. In the event of interposition of the shim 75, the shim is made of a non-metallic material so as to avoid wear of the casing of the reservoirs by friction against the shim due to different vibration frequencies for example.

[0078] For example, as illustrated in [Fig.4], a front face 73 of the tank comes close to, or even into contact with, a casing housing the battery 7. The front face 73 extends in a vertical and transverse or substantially vertical and transverse plane. Thus, the casing housing the battery being particularly resistant, it is not necessary to reinforce the front face 73 to protect the valves 31, 35, 32, 36 and sensors 33, 34 arranged at the front against impacts linked to accidents.

[0079] Note that a tank wall has, for example, a thickness of less than 30 mm.

[0080] Optionally, as illustrated in [Fig.6] in particular, the first and second sensors 50, 60 may be equipped with a ring 57, 67 capable of facilitating the orientation of a wire or cable 58, 68 for transmitting information and / or supplying electrical power to the sensors. For example, the ring allows the cable connected to the ring to rotate around of the axis of the screw 440 over a 90 degree stroke, or even over a 180 degree stroke. This is particularly useful for arranging connectors 59, 69 of the cables 58, 68 as desired, for example by orienting them to bring them together. For example, they are oriented to fix them independently or together, in particular via a clip or several clips coming into one or more wells 12 of one of the tanks. Such wells 12 are preferably hollow and contribute to increasing the strength of each tank. In addition, these wells 12 can be used to fix the two tanks together.

[0081] Thanks to the solution, each of the high-pressure tanks comprises a safety valve at each end, i.e. two valves acting in the event of overpressure. Indeed, the first tank 10 has the valve 35 (which preferably also has a filling function, for example via a valve 31) and the valve 30. The second tank 20 also has the valve 30 and the valve 36 (which preferably also has a filling function, for example via a valve 32). As mentioned previously, the valve 30 is therefore common to the two tanks 10, 20 and only serves for safety discharge in the event of overpressure, i.e. to evacuate the energy fluid to lower the pressure within the two tanks simultaneously. Thanks to the solution comprising a fluid connection between the two tanks via the fixing element 40, permanent communication is obtained between the two tanks without external piping.Thus, any risk of such piping connecting the two tanks being torn off during an accident suffered by the vehicle is avoided. Unlike the cylinders or bottles of the state of the art, the tanks communicate with each other, the internal pressure of the energy fluid is therefore identical in the tanks so that if only one of the valves 30, 35, 36 discharges, releases pressure, this has a consequence for the total volume of the energy fluid stored in the tanks. Thanks to the solution, in the event of an accident deforming the chassis, the notches 9G, 9D provided on the supports 4G, 4D connecting the tanks to the side members towards the front of the vehicle preferably, create a space, a safety margin in particular in the event of a side impact. The valves preferably arranged on each side of the front face 73 as illustrated in particular in [Fig.4], are particularly well protected.For example, the valves on either side of the front face 73 are arranged on respective beveled faces 71, 72 of the reservoirs 10, 20. Such faces extend in vertical or substantially vertical planes.

[0082] Concerning the valve 30, arranged at the rear of the tanks, more precisely housed within the recess 70, it is particularly well protected. As a reminder, neither the valve 30, nor the fixing screws 440, nor the sensors 50, 60 protrude from the recess 70, that is to say they do not protrude from the vertical and transverse plane P. In particular, as illustrated in [Fig. 3], none of these elements protrude from a lower face 74 of the association of the two tanks preferably extending in a plane transverse and longitudinal. In particular, as illustrated in [Fig.3], none of these elements protrude from an upper face 76 of the association of the two reservoirs preferably extending in a transverse and longitudinal plane.

[0083] Thus, unlike the cylinders of the state of the art, during a violent accident deforming the chassis of the vehicle, the valve 30 remains untouchable, inaccessible, in its cavity 70. Indeed, given the individual mechanical resistance of each tank and of the assembly comprising the two tanks securely fixed to each other which offers very high robustness, any crushing or deformation tending to reduce the volume of the recess 70 is prevented. This is also true for extremely violent impacts coming from the rear of the vehicle. Thus, whatever the impact suffered by the vehicle, the rear faces 15, 25 remain aligned by extending in the plane P and the angle a between the first wall 11 and the second wall 21 is not modified.

[0084] Thus, no valve can come into contact with the structure of the vehicle during an impact, or even be stressed beyond its resistance. Thanks to the protection offered by arrangement 2, the safety of the vehicle occupants and their environment is preserved. Indeed, as a reminder, in the case of flammable and / or explosive energy fluid, for example dihydrogen, a leak from one of the tanks, for example at the level of a valve, can have dramatic consequences. Thus, thanks to the solution, the integrity of the tanks (very high robustness of each and a fortiori once associated with each other) and the integrity of the valves are preserved by protecting them in specific spaces. Thus, during an impact, neither the valves nor the tanks are damaged to the point of causing a leak of the contained energy fluid.

[0085] However, in the event of a high temperature at the tanks which could cause excess pressure in the fluid contained in the tanks, for example detected by one of the sensors 50, 60, 33, 34, the valve closest to the detection opens to lower the internal pressure of the two tanks by allowing fluid to escape. Thanks to the communication between the two tanks 10, 20, this escape of fluid is pushed back since the substantial volume of the joining of the two tanks makes it possible to attenuate the excess pressure due to a rise in temperature. Indeed, it is preferable to delay such a leak of the energy fluid in order to increase the time available for evacuating the occupants of the vehicle and / or to keep the environment close to the vehicle leak-free, in particular to protect pedestrians and / or nearby buildings.The solution thus makes it possible to maintain optimal safety conditions, in particular to facilitate the work of emergency services, a little longer before the fluid escapes through one of the discharge valves.

[0086] Unlike the cylinders of the state of the art, in the event of overpressure in one of the two tanks 10, 20, their internal pressure is balanced due to their commu communication via the first and second sensors 50, 60, the two screws 440 and the fixing element 40.

[0087] The solution reduces the number of pipes since the valve 30 does not require a pipe or hose due to its integration almost directly on the two tanks. By limiting the number of parts containing energy fluid, the risk of leakage is reduced both during an accident and during filling at a fluid refill station. The number of parts to be mounted being lower, this results in a saving in assembly time, a saving linked to the absence of such hoses or pipes at this level and finally a saving in terms of mass. In addition, the mounting of the valve 30 is simple, by two screws 440 passing through the Y-shaped element and screwing into the sensors 50, 60. Finally, the cost of maintenance is lowered due to the small number of parts to be disassembled, changed and reassembled.

[0088] In summary, the solution proposes two polymorphic tanks made of high-pressure composites assembled back to back by means of threaded elements and centering pieces (not illustrated), for example in the form of a double tulip, by reinforcement wells 12. Preferably, the connection between the two tanks is close to a built-in connection. Each tank 10, 20 respectively comprises a filling valve 31, 32 at a corner, for example at a front face 71, 72, while a single discharge valve 30 is arranged at the diagonally opposite corner of each tank, namely at the first and second walls 11, 21.

[0089] To obtain the arrangement, one can start by assembling and fixing the two tanks 10, 20 together.

[0090] Preferably, the first temperature sensor 50 is first mounted on the first tank 10 at the first wall 11 and the second temperature sensor 60 is mounted on the second tank 20 at the second wall 21. To do this, either threaded inserts are first installed in the first and second tanks so as to create fixing interfaces and then screw the sensors into these inserts, or the sensors are screwed directly into each tank. Advantageously, glue and / or seals are provided to ensure optimal sealing between each sensor and each tank. Once the sensors are fixed, it becomes possible to preposition the fixing element 40 and place the screws 440 in order to check the alignment correspondence between the axes A50, A60 of the sensors blocked in the tanks and the axes A44 of the through holes 44.In the event of misalignment, a shim 75 having the appropriate thickness is placed to resolve the misalignment at the contact surface between the two tanks. Then, the two tanks can be fixed together after interposing the shim 75. For this, two screws 440 are used, each passing through a branch 41, 42 via each bore 44, and the screws are screwed into the threads 51, 61 of each sensor 50, 60. Thus, the specific part in . Y-shape is fixed relative to the tanks by means of the sensors, by interposing seals possibly in grooves provided at the level of the cylindrical surface 442 of each screw 440 so as to maximize the sealing relative to the bores 44 of each branch 41, 42. Then, the discharge valve 30 is mounted, preferably by screwing it into the thread 47 provided in the third branch 43 to obtain the assembled arrangement.

[0091] Note that the fixing of this fixing element connecting the two tanks, even via the two sensors, provides a fixing reinforcement between the tanks. For example, this makes it possible to have a connecting reinforcement, between the two tanks, placed at the rear end of the contact surface between them. More precisely, this reinforcement is arranged beyond this surface in the longitudinal direction since it is located within the recess 70.

[0092] As seen previously, the interiors of the two tanks are connected by the pipe 45 of the Y-shaped element which opens into the through holes 44. As a reminder, as illustrated in Figures 7 and 10 in particular, each through hole 44 communicates with a radial conduit 445 passing right through the cylindrical part or surface 442 of each screw 440. Finally, each radial conduit 445 connects, communicates with an axial conduit 444 of each screw. This axial conduit 444 opens into each internal conduit 55, 65 of the sensors. Thus, the energy fluid present in one tank communicates with that present in the other tank and vice versa. Thus, the pressure is balanced, distributed fairly, stabilizing at the same pressure due to this connection 45 between the two bores 44 and the conduits provided within the screws and the sensors to allow the energy fluid to circulate freely between the two containers.

[0093] Thus, during a fire near one of the two tanks, the pressure increases for one of the tanks. Thanks to the passage or conduit or pipe seen previously, the pressure quickly balances between the two tanks. However, if a maximum pressure threshold is reached, as a safety measure, at least one of the three valves 30, 35, 36 is actuated, opens, in order to lower the pressure, that is to say to stop the overpressure. The fluid is thus evacuated through one of these valves outside the vehicle.

[0094] The arrangement 2 thus makes it possible to postpone the overpressure discharge action until the latest possible time. This is a guarantee of safety for the occupants of the vehicle and / or the people and / or property in the surrounding area. Indeed, postponing the time of evacuation of the energy fluid outside the tanks increases the time available to evacuate the vehicle and / or the surrounding area. As a reminder, preferably the energy fluid is hydrogen which is explosive and flammable.

[0095] Thus, time is saved compared to state-of-the-art cylinders equipped with each of at least two relief valves. In fact, as soon as a cylinder reaches overpressure, it releases the fluid. In an assembly with several cylinder tanks, a valve of the cylinder that is under overpressure releases part of the contents to the outside quickly even though the other, or the other cylinders, are not at their pressure to initiate the pressure reduction.

[0096] The solution can advantageously comprise more reservoirs than the two of the embodiment presented, i.e. beyond two reservoirs. Indeed, the more reservoirs there are, the more possibilities for pressure distribution are obtained and consequently it becomes possible to further delay the evacuation of the fluid by a discharge valve.

[0097] Regarding the maintenance of the tanks, generally only the valves are changed. Thus, in the illustrated case comprising two tanks, only three valves are changed unlike four in the case of an assembly comprising two cylinders.

[0098] Furthermore, the solution makes it possible to dissociate the temperature sensor function from the overpressure relief function since there is both a temperature sensor and a valve. Thus, in the event of a defective temperature sensor, it is sufficient to change only the sensor, which proves to be less expensive than changing a valve equipped with a sensor and comprising the relief function. In this case, preferably, seals, in particular O-rings, arranged between the screws 440 and the bores 44 are also replaced.

[0099] The solution makes it possible to limit the pipes circulating the energy fluid outside the tanks, in particular thanks to the fixing element 40 fixed in the tanks, preferably via the sensors, which avoids a pipe to the discharge valve since the latter is directly fixed to the Y-shaped element 40. Thus, the risks of leaks are reduced and, above all, in the event of an accident, a potential tearing and / or deterioration of the pipe discharging the energy fluid is avoided. As a reminder, preferably the energy fluid is dihydrogen gas.

[0100] As mentioned above, the bevels of the tanks creating approximately a 120 degree angle for mounting the sensors, the Y-piece and the valve 30 provide protection by enclavation. This increases protection during a rear impact, the fragile elements being in front of the walls 15, 25 very strong and able to absorb impacts without deformation.

[0101] As mentioned, the single relief valve 30 for the two adjoining high-pressure tanks simplifies assembly, saves space and weight, lowers manufacturing costs and the overpressure relief function, and generates savings and ease of maintenance. In addition, the Y-shaped element strengthens the connection between the two tanks. As a reminder, the manufacture of the tanks makes it possible to obtain complex shapes, which makes it possible to optimize their integration within the vehicle and to achieve an optimal storage volume / space ratio. Eliminating at least one discharge valve for a set of two tanks limits the piping. This reduces the risk of leakage, particularly during accidents and when filling at a station. As a reminder, the fixing elements and the discharge valve are housed in an enclosure which protects them in the event of a rear impact, unlike bottle tanks.

[0102] Although the solution is particularly suitable for a vehicle, in particular a motor vehicle, for example a private vehicle, it is compatible for a utility type vehicle, or a truck, a bus, a coach, an agricultural vehicle, a lifting device, or even floating boats or aircraft.

[0103] Although this embodiment is not illustrated, the double tank may comprise a recess at the front face 73 similar to the recess 70. Such a front recess then makes it possible to mount a single refill or filling valve at the front common to both tanks, i.e. in the manner of the valve 30, for example with a Y-shaped interface piece. In this case, the Y-shaped interface piece at the front reinforces the connection between the two tanks. This single filling valve preferably has the discharge function in the event of overpressure and communicates with the two tanks. In this case, the polymorphic composite tanks mounted back to back comprise a single simple discharge valve on one side, the valve 30, and a single multifunction valve at the front. Such an assembly makes it possible to simplify the supply piping of the tanks since it is sufficient to supply the single filling valve.This assembly reduces the risk of accidents, particularly when filling up at the station. In addition, assembly is simplified, as fewer valves need to be installed, which reduces assembly and manufacturing costs and represents a weight saving. Finally, after-sales maintenance is easier and less expensive.

Claims

Claims

1. Arrangement (2) for a vehicle (1) comprising: a first tank (10) intended to store an energy fluid, in particular dihydrogen, and a second tank (20) intended to store said energy fluid, a common valve (30) for the energy fluid contained in the first and second tanks (10, 20), the valve (30) being intended to evacuate energy fluid in the event of overpressure in the first and / or in the second tank (10, 20).

2. Arrangement (2) according to the preceding claim, characterized in that the arrangement (2) further comprises a fixing element (40) for fixing the valve (30) relative to the first and second reservoirs (10, 20).

3. Arrangement (2) according to the preceding claim, characterized in that the fixing element (40) comprises three branches (41, 42, 43), in particular having an overall Y shape, two branches (41, 42) each comprising a through hole (44), the third branch comprising an axial hole (46), in particular tapped, for fixing the valve (30), each through hole (44) and the axial hole (46) allowing the diffusion of such an energetic fluid towards the valve (30), the axial hole (46) and the two through holes (44) communicating with each other.

4. Arrangement (2) according to the preceding claim, characterized in that the arrangement (2) further comprises: - a first temperature sensor (50) fixed, in particular by screwing, in a first wall (11) of the first reservoir (10), and - a second temperature sensor (60) fixed, in particular by screwing, in a second wall (21) of the second reservoir (20), each through hole (44) being crossed by a fixing screw (440) capable of diffusing such an energetic fluid from an axial end (441) of the screw (440) to a cylindrical surface (442) under the head (443) of the screw, each fixing screw (440) screwing into each temperature sensor (50; 60) and ensuring the fixing of the fixing element (40) relative to the first and second reservoirs (10, 20).

5. Arrangement (2) according to one of the preceding claims, characterized in that the first reservoir (10) and the second reservoir (20) are positioned and / or are shaped relative to each other so as to forming a recess (70) inside which the valve (30) extends.

6. Arrangement (2) according to claims 4 and 5, characterized in that the first and second reservoirs (10; 20) each have a rear face (15; 25) which is flat or substantially flat extending in the same plane (P), in particular vertical and transverse, the first and second walls (11; 21) creating the recess (70) between the first and second walls (11; 21) and the plane (P).

7. Arrangement (2) according to one of the preceding claims, characterized in that the first and second reservoirs (10, 20) are fixed to each other.

8. Arrangement (2) according to one of the preceding claims, characterized in that the first and second tanks (10, 20) each comprise a rigid structure intended to form part of a structure of a base (8) of such a vehicle (1).

9. Arrangement (2) according to one of the preceding claims, characterized in that the first and second tanks (10, 20) are arranged side by side on either side of a plane extending vertically and longitudinally or substantially vertically and longitudinally, in particular the median plane (M) of such a vehicle (1).

10. Arrangement (2) according to one of the preceding claims, characterized in that the first and second tanks (10, 20) are obtained at least partially from composite material, in particular from composite material comprising glass fiber and / or carbon fiber and / or Kevlar fiber (registered trademark).

11. Body (3) for a vehicle, in particular for a motor vehicle (1), characterized in that the body (3) comprises an arrangement (2) according to one of the preceding claims.

12. Vehicle (1), in particular a motor vehicle, characterized in that it comprises a body (3) according to the preceding claim, or an arrangement (2) according to one of claims 1 to 10.

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