Layout for electric or hybrid motor vehicles

Abstract

Title: Layout for an electric or hybrid motor vehicle Layout (2) for a motor vehicle (1) comprising a gearbox housing (30), an electric motor (4) having a rotor shaft (41) (42) having a bore (45) opening at a first end (41a) of the shaft (41) adapted to allow the circulation of a cooling fluid, the electric motor (4) comprising a sealing device (5) comprising a hollow nozzle (50) disposed on the shaft (41) and a sealing ring (6) disposed on at least one housing (3) so as to surround at least part of the nozzle (50), the sealing device further comprising a plurality of eyelets (7). Abstract Figure: Figure 2

Description

Title of the invention: Layout for an electric or hybrid motor vehicle

[0001] The invention relates to an arrangement for a motor vehicle, particularly for an electric or hybrid vehicle. The invention also relates to an electric or hybrid vehicle equipped with such an arrangement.

[0002] Electric or hybrid vehicles typically include at least one electric traction and / or propulsion motor for moving the vehicle. The electric motor comprises, in a known manner, a rotor mounted on a shaft and rotating near a stator. Since the rotor rotates at a high speed, for example on the order of 16,000 revolutions per minute, the electric motor tends to heat up during operation.

[0003] Similarly, heating can be observed within a vehicle gearbox which allows the rotational speed of a wheel to be regulated relative to the rotational speed of the shaft coming out of the electric motor.

[0004] In order to limit such heating and preserve the integrity and operation of the electric motor and gearbox, it is known to integrate one or more cooling systems into the vehicle. An example of a known architecture, implemented for example when the motor is partially integrated into the vehicle's gearbox, consists of providing a cooling system that cools both the gearbox and the electric motor. The electric motor shaft is then partially hollow to allow fluid connection between a first cooling fluid circuit, in particular oil, present in at least part of the gearbox, and at least a second circuit within the electric motor.To ensure a seal at the interface between the rotor shaft and the gearbox, it is common practice to integrate a sealing device such as a gasket, particularly a high-speed rotary joint. However, such a sealing device has the disadvantages of being bulky, expensive, and complicating the installation of the electric motor, especially within the gearbox.

[0005] The invention falls within this context and aims to provide an alternative to known electric motors, enabling suitable sealing in a less bulky and less expensive manner. An additional objective of the invention is to simplify the mounting of such an electric motor in the vehicle.

[0006] The invention relates to an arrangement for a motor vehicle comprising: - a gearbox casing configured to allow the circulation of a cooling fluid at the level of a first circuit and including an opening, in fluidic connection with said circuit; - an electric motor comprising a rotor shaft extending along a first direction and comprising a bore opening at a first end of the shaft so as to permit a fluidic connection between the first circuit and at least a part of the electric motor; the electric motor comprising a sealing device including a hollow cannula and a hollow sealing ring configured to permit a fluidic connection between the first circuit and the shaft, the cannula being disposed on the first end of the shaft and configured to extend partly into the opening, the sealing ring being disposed on at least one housing so as to surround at least partly the cannula, the sealing device further comprising a plurality of cilia connected to the cannula and extending into contact with the sealing ring and / or a plurality of cilia connected to the sealing ring and extending at least partly into contact with the cannula and / or the shaft.

[0007] The eyelashes can be made of a flexible or elastically deformable material. The eyelashes can be made of a material containing carbon, in particular resistant to temperatures above 150°C.

[0008] All or part of the plurality of eyelashes may extend along a direction parallel, or substantially parallel, to the first direction and may be disposed in contact with the first end of the rotor shaft. All or part of the plurality of eyelashes may extend along a direction transverse, or even orthogonal, to the first direction and is disposed in contact with the cannula.

[0009] All or part of the plurality of eyelashes may have a length greater than or equal to 0.50 mm, or even greater than or equal to 1 mm, or even greater than or equal to 2 mm.

[0010] The sealing device nozzle can be attached and mounted on the shaft. The sealing ring can be attached and mounted on the gearbox housing.

[0011] The cannula of the sealing device can be made of a metallic material.

[0012] A body of the sealing ring, carrying the plurality of eyelets, can be made in a metallic material, and / or can be overmolded onto the plurality of eyelashes.

[0013] The bore of the shaft can be defined by a first dimension along a direction orthogonal to the first direction, the cannula of the sealing device being at least partly inserted in the bore, and / or the hollow cannula of the sealing device being defined by a second dimension, defined at the level of an inner surface of the cannula, opposite to the outer surface, strictly less than the first dimension of the shaft.

[0014] The invention also relates to an electric or hybrid motor vehicle comprising an arrangement as defined above.

[0015] Other details, features and advantages will become clearer upon reading the detailed description given below, by way of example and not limitation, in relation to the various embodiments illustrated in the following figures:

[0016] Fig. 1 is a schematic representation of an embodiment of a vehicle equipped with an arrangement according to the invention, a gearbox and an electric motor.

[0017] Fig. 2 is a schematic representation of the arrangement according to the invention.

[0018] Figure 3 is a schematic representation of an engine sealing device electrical according to a first example of implementation.

[0019] Figure 4 is a schematic representation of the engine sealing device electrical according to a second example of implementation.

[0020] Figure 5 is a schematic representation of the engine sealing device electrical according to a third example of implementation.

[0021] Figure 1 schematically illustrates an example of an embodiment of a motor vehicle 1 according to the invention. Vehicle 1 is a motor vehicle with an electric or hybrid motor. Furthermore, vehicle 1 can be of any type, for example, a passenger car, a commercial vehicle, a truck, or a bus. In particular, the vehicle 1 in question can be a connected and / or autonomous vehicle.

[0022] The motor vehicle 1 is equipped with an arrangement 2 according to the invention. Generally, the arrangement 2 comprises at least one gearbox housing 30 and an electric motor 4, the latter being equipped with a sealing device 5. The vehicle 1 thus comprises a gearbox 30 and the electric motor 4. For example, the electric motor 4 is a traction and / or propulsion electric motor for the vehicle 1. In particular, and advantageously, the electric motor 4 is at least partially arranged within the gearbox 30.

[0023] The gearbox 30 comprises at least one housing 3. A "housing" is understood to mean an enclosure, in particular a metallic one. According to one embodiment, the gearbox 30 may comprise a plurality of assembled housings 3. The at least one housing 3 of the gearbox 30 is advantageously configured to allow the circulation of a cooling fluid FR in at least a portion of a first circuit CL. For example, the cooling fluid FR is an oil, in particular a lubricating and / or cooling oil intended for cooling at least a portion of the gearbox 30. For example, the first circuit CL of cooling fluid FR is intended for cooling at least one gear of the gearbox 30.

[0024] At least one housing 3 includes an opening 31 arranged in fluidic connection with the first circuit Cl. The opening 31 is delimited by one or more edges 32. It allows a fluidic connection to the first circuit Cl. In particular, the opening 31 allows a fluidic connection to be established between the first circuit Cl and a second circuit C2, included in the electric motor 4, so that the same coolant FR supplies both circuits, as further explained below. Optionally, the arrangement 2 and / or the vehicle 1 includes a pump, not shown, suitable for circulating the coolant FR in the first circuit Cl and / or the second circuit C2.

[0025] As illustrated in Figures 2 to 5, the electric motor 4 comprises a shaft 41, a rotor 42 and a stator 43. Optionally, the electric motor 4 comprises a housing 44 delimiting an internal volume 400 in which the rotor 42, the stator 43 and at least a portion of the shaft 41 are arranged. Also, the second circuit C2 is at least partially disposed within the internal volume 400 of the electric motor 4.

[0026] The shaft 41 extends along a first direction 100 and is centered, in particular, on an axis of rotation 450 parallel to, or coinciding with, the first direction 100. The shaft 41 is configured to be moved in rotation about the axis of rotation 450 and is the shaft 41 of the rotor 42. The rotor 42 is thus fixed to the shaft 41 so that the shaft 41 and the rotor 42 are able to rotate simultaneously about the axis of rotation 450, or substantially about the axis of rotation 450. Preferably, the rotor 42 is arranged so as to pivot relative to and opposite the stator 43.

[0027] The shaft 41 includes a bore 45 opening at a first end 41a of the shaft 4L. The term "opening" means that the bore 45 is open to the environment external to the shaft 4L. The first end 41a of the shaft 41 is located near the opening 31 of the housing 3. The shaft 41 is thus able to implement the fluid connection between the first circuit C1 and at least a part of the electric motor 4, in particular the second circuit C2. The bore 45 extends over a portion of the length of the shaft 41, measured along the first direction 100 between the first end 41a and a second end 41b of the shaft 41, opposite the first end 41a and being furthest from the opening 31 of the housing 3.

[0028] Optionally, the shaft 41 includes at least one channel 46 connected to the bore 45 and opening into an outer face 410a of the shaft 41, facing the rotor 42. In other words, at least one channel 46 is provided so as to extend from the bore 45 to the outer face 410a of the shaft 41. For example, at least one channel 46 extends transversely, or even orthogonally, to the axis of rotation 450 and / or to the first direction 100. For example, as illustrated, the shaft 41 includes a plurality of channels 46. The channels 46 are configured to allow fluidic connection between the first volume and the bore 45, and, consequently, between the second circuit C2 and first circuit Cl. An example of the circulation of the cooling fluid FR in the shaft 41 is illustrated by arrows in figures 2 to 5.

[0029] Generally, the sealing device 5 comprises a cannula 50 and a sealing ring 6, configured to allow a fluidic connection between the first circuit Cl and the bore 45 of the shaft 41, as well as a plurality of eyelets 7.

[0030] The cannula 41 is disposed on the shaft 41. The cannula 50 is a hollow part, at least partially cylindrical. It comprises an inner surface 51a, defining a through passage 52 suitable for allowing the circulation of the cooling fluid FR. The term "through passage" means that the passage 52 extends completely through the cannula 50, particularly along the first direction 100. According to a non-limiting embodiment, the cannula 50 comprises at least one cylindrical portion with a circular or substantially circular base.

[0031] The cannula 50 is disposed on the first end 41a of the rotor shaft 41 42 and is configured to extend partly into the opening 31 of the gearbox housing 30, i.e. opposite the edges 32 of the housing 3. Thus, when the arrangement 2 is made up within the vehicle 1, the cannula 50 extends between the shaft 41 and the opening 31 in order to allow the fluidic connection between the first circuit Cl and the bore 45 of the shaft 4L. The cannula 50 thus also allows the fluidic connection between the first circuit Cl and the second circuit C2.

[0032] In particular, the cannula 50 comprises a first extremity portion 53a, corresponding to a portion of the cannula 50 furthest from the shaft 41, and a second extremity portion 53b, opposite the first extremity portion 53a, i.e., proximal relative to the shaft 4L. When the arrangement 2 according to the invention is assembled, the first extremity portion extends at the level of the opening 31 and / or into the opening 31, while the second extremity portion 53b is connected to the first end 41a of the shaft 4L. Also, the first extremity portion 53a is at least partially complementary in shape to the opening 31, while the second extremity portion 53b is at least partially complementary in shape to the shaft 4L. For example, the first extremity portion 53a and / or the second The extreme portion 53b is cylindrical.

[0033] The passage 52 formed by the cannula 50 extends in continuity with the bore 45. According to a particular, optional embodiment, the passage 52 of the cannula 50 and the bore 45 are centered on the axis of rotation 450 and / or the first direction 100.

[0034] Optionally but preferably, the cannula 50 of the sealing device 5 is attached and mounted on the first end 41a of the shaft 4L. For example, the cannula 50 is mounted on the shaft 41 by shrink fitting.

[0035] Optionally but preferably, the cannula 50 of the sealing device 5 is at least partly made of a metallic material, such as steel. In particular, the cannula 50 is made of a material capable of withstanding temperatures of 100°C or higher, or even 110°C or higher.

[0036] Alternatively, the cannula is at least partially made of a plastic material.

[0037] According to a preferred embodiment, the cannula 50 is dimensioned and arranged so as to be at least partially inserted into the bore 45. In other words, an external dimension of the cannula 50, measured along a direction orthogonal to the first direction 100, is less than or equal to a dimension of the bore 45 measured along that same direction. The dimension in question may be a diameter or a diagonal, for example.

[0038] Furthermore, optionally, the passage 52 of the cannula 50 is defined by a second dimension, measured at the inner surface 51a of the cannula 50, which is strictly smaller than the first dimension of the bore 45 of the rotor shaft 41 42. Since part of the cannula 50 extends into the bore 45, the space available for the circulation of the cooling fluid FR through the cannula 50 is thus smaller than the space available in the rest of the shaft 41. This principle advantageously limits the backflow of the cooling fluid FR from the bore 45 of the shaft 41 to the passage 52 of the cannula 50.

[0039] The sealing ring 6 is disposed on the housing 3 of the gearbox 30. The sealing ring 6 is configured and positioned at the opening 31 so as to surround the nozzle 50 located in the opening 31. The sealing ring 6 comprises a body 61 and a through hole 62, i.e., extending completely through the sealing ring 6. The hole 62 is thus positioned opposite the opening 31 and is capable of receiving at least a portion of the nozzle 50. The hole 62 is delimited here by an internal circumference 63 of the sealing ring 6, at least partially facing the nozzle 50. The sealing ring 6 is arranged so as to extend at a non-zero distance from the nozzle 50, such that there is no direct contact between them.For example, at least one dimension of the hole 62 in the sealing ring 6, measured between two opposite points on the inner circumference 63 along a direction orthogonal to the first direction 100, is greater than or equal to a dimension of the opening 31 measured along that same direction. Preferably, the sealing ring 6 extends around one circumference of the opening 31.

[0040] Optionally but preferably, the sealing ring 6 is attached and mounted on the edges 32 of the housing 3. For example, the sealing ring 6 can be screwed or mounted on the housing 3 by shrink fitting.

[0041] Preferably, the body 61 of the sealing ring 6 is at least partly made of a metallic material, such as steel. In particular, the shape of the body 61 advantageously allows the sealing device 5 to be manufactured by overmolding said body 61 onto the plurality of eyelets 7.

[0042] Alternatively or additionally, the body 61 comprises a plastic material.

[0043] The plurality of eyelashes 7 of the sealing device 5 can be carried by the sealing ring 6 and / or by the cannula 50.

[0044] According to a first embodiment, illustrated in [Fig. 3], the plurality of eyelashes 7 can be connected to the sealing ring 6 and extend into the space between the sealing ring 6 and the cannula 50 so as to come into contact with an outer surface 51b of the cannula 50, facing the edges 32 of the opening 31 and opposite the inner surface 51a of the cannula 50. The eyelashes 7 are distributed over at least a part of the inner circumference 63 of the sealing ring 6 surrounding the cannula 50. Preferably, the eyelashes are distributed regularly within the inner circumference 63.

[0045] The sealing ring 6, particularly the body 61 of the sealing ring 6, is, for example, overmolded on all or part of the plurality of eyelets 7.

[0046] Preferably, the cilia 7 are made of a flexible and / or elastically deformable material. In particular, the cilia 7 are made of a material such as carbon or containing carbon. In particular, the radial load of the cilia can be in the range of 7 to 13.

[0047] In particular, the eyelashes 7 are made of a material resistant to temperatures of around 150°C which can be observed at the level of the electric motor 4 due to friction with the cannula 50.

[0048] In the illustrated example, the cilia 7 extend along transverse, or even orthogonal, directions to the first direction 100. In particular, the cilia 7 extend radially, or perpendicularly, relative to the first direction 100 and / or to the axis of rotation 450 and extend in the direction of the cannula 50. In order to limit the crushing of the cilia 7 in contact with the cannula 50, their length is equal to or substantially equal to the distance separating the outer surface 51b of the cannula 50 from the inner circumference 63 of the sealing ring 6, such a distance being measured along a radial axis originating from the axis of rotation 450 and passing through the cilia in question.

[0049] Alternatively or additionally, all or part of the plurality of eyelashes 7 is inclined relative to the first direction 100 in order to minimize contact forces on the cannula 50.

[0050] For example, the length of the eyelashes 7 is greater than or equal to 0.50 mm, or even greater than or equal to 1 mm or greater than or equal to 2 mm. The length of the eyelashes 7 is then evaluated for a portion of the eyelashes 7 not integrated into the mass of the sealing ring 6, that is to say between the inner circumference 63 of the sealing ring and a free end of a given eyelash.

[0051] Optionally, the eyelashes 7 have a thickness between 10 pm and 100 pm inclusive.

[0052] In the case of the embodiment illustrated in [Fig. 3], the plurality of eyelashes 7 can, alternatively, be connected to the cannula 50 and extend into the space between the sealing ring 6 and the cannula 50 so as to come into contact with the inner circumference 63 of the sealing ring 6. The cannula 50 is then preferably made of a plastic material and the eyelashes 7 are distributed over the outer surface 51b of the cannula 50. The various characteristics described above, relating to the material, dimensions or position of the eyelashes 7, apply mutatis mutandis to such an alternative.

[0053] According to a second embodiment, illustrated in [Fig.4], the plurality of eyelets 7 can be connected to the sealing ring 6 and extend into the space between the sealing ring 6 and the shaft 41 so as to come into contact with the first end 41a of the shaft 41 of the rotor 42. The eyelets 7 are distributed over all or part of a first face 64 of the sealing ring 6, facing the electric motor 4, and in particular distant from the housing 3.

[0054] In particular, the second embodiment differs from the first in that all or part of the plurality of eyelashes 7 extends, for example, along a direction parallel, or substantially parallel to the first direction 100. Here, "substantially parallel" means a deviation of the order of ±15° from the direction of extension of the eyelashes 7 relative to the first direction 100 or even a deviation of the order of ±10°.

[0055] Alternatively or additionally, all or part of the plurality of eyelets 7 connected to the sealing ring 6 and extending into the space between the sealing ring 6 and the shaft 41 so as to come into contact with the first end 41a of the shaft 41 of the rotor 42 is inclined relative to the first direction 100 in order to minimize contact forces. In particular, such an inclination has a value strictly less than 50°, or even 45°, relative to the first direction 100, and strictly greater than -50°, or even -45°, relative to that same direction.

[0056] The eyelashes 7 are preferentially distributed on the first face 64 of the sealing ring 6 so as to be arranged at a non-zero distance from the cannula 50. It is understood that the various characteristics set out above, relating to the eyelashes 7, apply mutatis mutandis to the present embodiment.

[0057] According to a third embodiment, illustrated in [Fig. 5], the plurality of eyelashes 7 can be divided into different subsets of eyelashes 7. A first subset 7a of eyelashes 7 can be implemented according to one of the alternatives described above with reference to the first embodiment illustrated in [Fig. 3]. In other words, the first subset 7a of eyelashes 7 is connected to the sealing ring 6 and extends into the space between the sealing ring 6 and the cannula 50 so as to come into contact with the outer surface 51b of the cannula 50, or the first subset 7a of eyelashes 7 is connected to the cannula 50 and extends into the space between the sealing ring 6 and the cannula 50 so as to come into contact with the inner circumference 63 of the sealing ring 6. The eyelets 7 of the first subassembly 7a extend transversely, or even orthogonally, to the first direction 100. A second subassembly 7b of eyelets 7 is connected to the sealing ring 6 and extends into the space between the sealing ring 6 and the shaft 41 so as to come into contact with the first end 41a of the shaft 41 of the rotor 42, as described above with reference to [Fig. 4]. The eyelets 7 of the second subassembly 7b extend parallel to the first direction 100.

[0058] Regardless of the embodiment implemented, the presence of the eyelets 7 generates a pressure drop between the outer surface 51b of the cannula 50 and the inner circumference 63 of the sealing ring 6, and consequently, at least a portion of the edges 32 of the housing 3 defining the opening 31. In particular, the pressure drop generated is greater than the various frictions generated at the opening 31 and the portion of the cannula 50 located within the opening 31, namely, in this case, the first extremity portion 53a. This results in a partial, or even total, seal of the opening 31 sufficient to allow the operation of the electric motor 4 and the appropriate circulation of the cooling fluid FR.Due to the pressure drop observed at the outer surface 51b of the cannula 50, the coolant FR circulating between the first circuit Cl and the second circuit C2, particularly under the effect of the pump, is essentially directed through the passage 52 of the cannula 50 and then into the bore 45 of the shaft 41. Leaks observed in the space between the cannula 50 and the edges 32 of the opening 31 are minimized to an acceptable level, or even eliminated. "Essentially" means that more than 50%, or even 75% or 90%, of the quantity of coolant FR circulating at the opening 31 is directed through the passage 52 of the cannula 50. This principle ensures a more compact and cost-effective sealing of the interface between the rotor shaft 41 and the housing 3.

[0059] Also, the presence of the cilia 7 and their contact with the shaft 41, the cannula 50 and / or the sealing ring 6 advantageously allows the grounding of the electric motor 4 in a compact and inexpensive manner.

[0060] Thus, when the vehicle 1 is in operation, the coolant FR circulates in the first circuit Cl so as to allow the cooling of the gearbox 30. At least a portion of the coolant FR is extracted from the first circuit Cl, for example by means of the pump, and sent through the opening 31. The extracted coolant FR then passes essentially through the passage 52 of the nozzle 50 and is subsequently sent through the bore 45, towards the second circuit C2. Optionally, a minimal portion of the coolant FR passes between the outer surface 51b of the nozzle 50 and the edges 32 of the opening 31 on the one hand or between the outer surface 51b and the inner circumference 63 of the sealing ring 6.

[0061] The invention thus offers an alternative to electric motors, particularly electric motors integrated into a gearbox. The proposed solution is advantageously compact, simple to implement, and inexpensive, as it eliminates the need for conventional seals, especially high-speed rotary seals, and is integrated into the electric motor shaft. The proposed solution also provides grounding for the electric motor, thereby further optimizing the compactness of the assembly. Moreover, the invention can be extended to a wide range of electric motors and simplifies the mounting of the electric motor in the gearbox.

[0062] The present invention cannot, however, be limited to the means and configurations described and illustrated herein and it also extends to any equivalent means or configuration and to any technically operative combination of such means insofar as they ultimately fulfill the functionalities described and illustrated in this document.

Claims

Demands

1. Layout (2) for a motor vehicle (1) comprising: - a gearbox (30) housing configured to allow the circulation of a cooling fluid (FR) at the level of a first circuit (Cl) and comprising an opening (31), in fluidic connection with said circuit; - an electric motor (4) comprising a rotor shaft (41) (42) extending along a first direction (100) and comprising a bore (45) opening at a first end (41a) of the shaft (41) so as to allow a fluidic connection between the first circuit (Cl) and at least a part of the electric motor (4);characterized in that the electric motor (4) comprises a sealing device (5) including a hollow cannula (50) and a hollow sealing ring (6) configured to permit a fluidic connection between the first circuit (Cl) and the shaft (41), the cannula (50) being disposed on the first end (41a) of the shaft (41) and configured to extend partly into the opening (31), the sealing ring (6) being disposed on at least one housing (3) so as to surround at least partly the cannula (50), the sealing device further comprising a plurality of cilia (7) connected to the cannula (50) and extending into contact with the sealing ring (6) and / or a plurality of cilia (7) connected to the sealing ring (6) and extending at least partly into contact with the cannula (50) and / or the shaft (41).

2. Arrangement (2) according to the preceding claim, wherein: - the eyelashes (7) are made of a flexible or elastically deformable material; and / or - the eyelashes (7) are made of a material comprising carbon, in particular resistant to temperatures above 150°C.

3. Arrangement (2) according to any one of the preceding claims, wherein all or part of the plurality of eyelashes (7): - extends along a direction parallel, or substantially parallel to the first direction and is disposed in contact with the first end of the rotor shaft (41) (42); and / or - extends along a direction transverse, or even orthogonal, to the first direction (100) and is disposed in contact with the cannula (50).

4. Arrangement (2) according to any one of the preceding claims, wherein all or part of the plurality of eyelashes (7) has a length greater than or equal to 0.50 mm, or greater than or equal to 1 mm, or greater than or equal to 2 mm.

5. Arrangement (2) according to any one of the preceding claims, wherein: - the cannula (50) of the sealing device (5) is attached and mounted on the shaft (41); and / or - the sealing ring (6) is attached and mounted on the gearbox housing (30).

6. Arrangement (2) according to any one of the preceding claims, wherein the cannula (50) of the sealing device (5) is made of a metallic material.

7. Arrangement (2) according to any one of the preceding claims, wherein a body (61) of the sealing ring (6), carrying the plurality of eyelets (7): - is made of a metallic material; and / or - is overmolded onto the plurality of eyelets (7).

8. Arrangement (2) according to any one of the preceding claims, wherein the bore (45) of the shaft (41) is defined by a first dimension along a direction orthogonal to the first direction (100): - the cannula (50) of the sealing device (5) being at least partly inserted in the bore (45); and / or - the hollow cannula (50) of the sealing device (5) is defined by a second dimension, defined at an inner surface of the cannula (50), opposite to the outer surface, strictly smaller than the first dimension of the shaft (41).

9. Vehicle (1) with electric or hybrid motor comprising an arrangement (2) according to one of the preceding claims.

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