A motor vehicle comprising an electric compressor capable of being attached to an electric powertrain in several orientations.

Abstract

Motor vehicle comprising an electric compressor (1) and an electric powertrain (2), each provided with a covering, arranged in a front engine compartment, the electric compressor (1) being fixed to the covering of the electric powertrain (2) by means of a fixing system comprising two parallel fixing plates (3) each provided with at least one hollow tube designed so as to be able to be reversibly secured to a blind hole provided in the covering of the electric powertrain, the electric compressor (1) being able to be arranged in at least two different positions relative to the electric powertrain (2), each associated with a different securing of the plurality of perforations of the fixing plates (3) with the blind holes of the covering of the electric compressor (1) after a different matching of the plurality of perforations provided with the blind holes.Figure for abstract: Fig 8.

Description

Title of the invention: Motor vehicle comprising an electric compressor which can be attached to an electric powertrain in several orientations. Technical field

[0001] The technical field of the invention is the installation of an electric compressor in an engine compartment of an electric vehicle. Previous techniques

[0002] In an electric vehicle, an electric compressor is used to enable air conditioning of the passenger compartment air.

[0003] In such electric vehicles equipped with an electric powertrain arranged in a front engine compartment, the electric compressor is generally also placed in this compartment. The front engine compartment is equipped with side members stiffening it, in order, in particular, to protect users against the risk of high-voltage shock after a frontal accident.

[0004] Due to the density of components in this compartment and the presence of the side members stiffening the compartment, only one configuration allows the installation of the electric compressor in the front engine compartment for a vehicle chassis.

[0005] Nowadays, in order to reduce the costs of developing motor vehicles, especially electric ones, car manufacturers are pooling platform development across several vehicle models, or even across several manufacturers.

[0006] The same platform, which notably includes the vehicle chassis, is nevertheless adapted to each vehicle using it. This adaptation involves modifying the chassis, and, in certain cases, the front engine compartment.

[0007] The unique configuration allowing the installation of an electric compressor in a vehicle from one platform may differ from the unique configuration allowing the installation of an electric compressor in another vehicle from the same platform, thus thwarting the development of a shared platform.

[0008] There is therefore a need for means of fixing an electric compressor in the front engine compartment of an electric motor vehicle, compatible with at least two installation configurations. Statement of the invention

[0009] The invention relates to a motor vehicle comprising an electric compressor and an electric powertrain, each provided with a covering. electric compressor is fixed to the casing of the electric powertrain by means of a fixing system comprising two parallel fixing plates each provided with at least one hollow tube designed so as to be able to be reversibly secured to a blind hole made in the casing of the electric powertrain, the electric compressor being able to be arranged in at least two different positions relative to the electric powertrain, each associated with a different securing of the plurality of perforations of the fixing plates with the blind holes of the casing of the electric compressor after a different matching of the plurality of perforations and the blind holes.

[0010] The plurality of perforations provided in each fixing plate can form a first pattern, the blind holes provided in the cladding of the electric compressor on each of the two distal faces of the compressor can form a second pattern.

[0011] The first pattern and the second pattern may be identical.

[0012] The pattern can be circular.

[0013] The pattern may form a regular polyhedron, including a pattern in the shape of a triangle, square, pentagon, hexagon, heptagon, or octagon.

[0014] The cladding of the electric compressor may comprise a first lateral face, closed on itself, connected by one end to a first end face and by the other end to one end of a second lateral face, also closed on itself, the other end of the second lateral face being connected to a second end face, the first end face and the second end face forming the distal faces of the cladding with which the fixing plates are respectively secured.

[0015] The invention also relates to a method of manufacturing a motor vehicle as described above, in which:

[0016] a. the space available in the front engine compartment after installation of the electric powertrain for the installation of an electric compressor is determined,

[0017] b. a position to be taken by the electric compressor is determined depending on the space available, then the correspondence between the perforations of the fixing plates and the blind holes provided in the casing of the electric compressor is determined so that the position of the compressor resulting from this matching corresponds to the determined position,

[0018] c. the two fixing plates are arranged so that the perforations of the fixing plates and the blind holes made in the casing of the electric compressor are matched as determined and then the two fixing plates are secured fixing to the electric compressor casing by means of fixing means,

[0019] d. each hollow tube of the fixing plates is secured to a blind hole in the cladding of the electric powertrain by means of the fixing means. Brief description of the drawings

[0020] Other aims, characteristics and advantages of the invention will appear on reading the following description, given solely by way of non-limiting example and made with reference to the appended drawings in which:

[0021] - figures [Fig.la] and [Fig.lb] illustrate a front engine compartment of a electric vehicle, comprising an electric compressor and an electric powertrain, the electric compressor being in two different orientations,

[0022] - Figure [Fig.2] illustrates the main parts of a compressor housing electric,

[0023] - Figure [Fig.3] and Figure [Fig.4] illustrate the principal planes and axes in a electric compressor,

[0024] - figure [Fig.5] illustrates the first fixing plate of the electric compressor to the electric powertrain,

[0025] - figure [Fig.6] illustrates the second fixing plate of the electric compressor to the electric powertrain,

[0026] - figure [Fig.7] illustrates the cladding of the electric powertrain,

[0027] - figures [Fig.8][Fig.9][Fig.10] illustrate different orientations of the compressor electric versus electric powertrain. Detailed description

[0028] Figures [Fig.1a] and [Fig.1b] illustrate a front engine compartment of an electric vehicle, comprising an electric compressor 1 and an electric powertrain 2. The front engine compartment is delimited laterally by two side members connecting a front cross member and a passenger compartment cross member. The front engine compartment is also delimited at the top by an engine compartment cover.

[0029] The electric compressor 1 is fixed to the casing of the electric power unit 2 by means of a fixing system comprising two fixing plates 3, 4 and blind holes made in the casing of the electric power unit 2.

[0030] The electric compressor 1, illustrated by the figure [Fig.2], comprises a casing 1a and a base 1b included in a casing. More precisely, the casing comprises a first end face le, a first side face Id, a second side face le and a second end face If.

[0031] The casing 1a of the electric compressor has as its covering the first lateral face 1d, closed on itself, and connected by one end to the first end face 1c, the other end of the first lateral face being kept open.

[0032] The base of the electric compressor has as its covering the second lateral face 1e, closed on itself, and connected by one end to the second end face 1f, the other end being kept partially open.

[0033] The electric compressor housing cover and the compressor base cover are connected together at their open ends to form the electric compressor cover.

[0034] Still in the figure [Fig.2], it can be seen that the base 1b of the electric compressor has an elongated shape, offset relative to the axis of revolution of the casing 1a of the electric compressor, said base 1b allowing the electrical power supply connectors to be connected, as well as the air inlet and outlet hoses.

[0035] Referring to figure [Fig.3], plane A is defined as the median plane of the base 1b of the electric compressor normal to the axis of revolution R of the casing 1a of the electric compressor.

[0036] We further define plane B as the median plane of the base 1b of the electric compressor comprising the axis of revolution R of the casing 1a of the electric compressor.

[0037] The axis D of the electric compressor is defined as the intersection of plane A and plane B.

[0038] Figure [Fig.4] illustrates these same planes and axes without the electric compressor in order to better account for their spatial and angular relationships.

[0039] A first fixing plate 3 is fixed on the first end face 1c of the casing, at the level of the casing 1a of the electric compressor. Figure [Fig.5] illustrates such a first fixing plate 3.

[0040] A second fixing plate 4 is fixed on the second end face If of the cladding at the base 1b of the electric compressor. The two fixing plates 3, 4 are arranged so as to be in distal positions relative to each other. Figure [Fig.6] illustrates such a second fixing plate 4.

[0041] Referring to the figure [Fig.5], it is understood that the first fixing plate 3 has a first face intended to be in contact with the first end face 1c of the cladding and a second face on which a hollow tube 3a is arranged. The hollow tube 3a is intended to be placed in correspondence with a blind hole provided with a thread, made in the cladding of the electric powertrain 2. The hollow tube 3a and the blind hole being secured by means of fixing means 3b, such as a screw or a threaded rod / nut assembly.

[0042] The first fixing plate 3 is provided with a plurality of holes, in particular at least three holes, in correspondence with a plurality of blind holes provided in the first end face 1c of the cladding. In other words, the placement of the holes on the first fixing plate 3 corresponds to the placement of the blind holes on the first end face 1c of the cladding. The first fixing plate 3 is reversibly secured to the casing 1c of the compressor by means of the fixing means 3c, such as screws or threaded rod / nut assemblies inserted into each hole in the first fixing plate 3 and cooperating with a thread provided in the blind holes provided in the first end face 1c of the cladding.

[0043] Similarly, referring to the figure [Fig.6], it is understood that the second fixing plate 4 is provided with a first face intended to be in contact with the second end face If of the cladding and a second face on which two hollow tubes 4a are arranged. The two hollow tubes 4a are each intended to be placed in correspondence with a blind hole made in the cladding of the electric powertrain 2 and are provided with a thread. Each hollow tube 4a and the corresponding blind hole are reversibly secured by means of fixing means 4b, such as a screw or a threaded rod / nut assembly.

[0044] It will be noted that two hollow tubes 4a have been used in order to provide a clear space in the vicinity of the motor shaft output of the electric powertrain. Said type of motor shaft is not illustrated in the present figures. Nevertheless, a different number of hollow tubes 4a could have been used, only one hollow tube being necessary on each end face of the casing of the electric compressor.

[0045] The second fixing plate 4 is provided with a plurality of holes, in particular at least three holes, in correspondence with a plurality of blind holes provided in the second end face If of the cladding. In other words, the placement of the holes on the second fixing plate 4 corresponds to the placement of the blind holes of the second end face If of the cladding. The second fixing plate 4 is reversibly secured to the base 1b of the compressor by means of fixing means 4c, such as screws or threaded rod / nut assemblies inserted into each hole of the second fixing plate 4 and cooperating with a thread provided in the blind holes provided in the second end face If of the cladding.

[0046] In a preferred embodiment, the plurality of holes in each of the fixing plates 3, 4 and the plurality of blind holes provided in each of the cladding end faces 1c, 1f are arranged in the same circular pattern, in particular so that the holes are distributed regularly over the surface. circular pattern ridge. In other words, the holes are arranged on a circle and the angular distance between two adjacent holes is constant.

[0047] Each matching of the plurality of holes in each of the fixing plates 3, 4 and the plurality of blind holes provided in each of the cladding end faces lc, lf is associated with a different positioning of the electric compressor 1 relative to the cladding of the electric powertrain 2.

[0048] It is then possible to choose one of the different correspondences so that the position of the electric compressor 1 can correspond to the space available in the front engine compartment after installation of the electric powertrain 2.

[0049] It is also possible to move from one position of the electric compressor 1 to another by applying a rotation of a multiple of the angular difference between two adjacent holes to the first end face relative to the first cladding face and to the second end face relative to the second cladding face. Such a rotation has the effect of applying a rotation in the opposite direction to the electric compressor 1 relative to the electric powertrain 2 around the axis of revolution R of the casing 1a. Indeed, the connection between the hollow tube 3a of the first end face 3 and the corresponding blind hole provided in the cladding of the electric powertrain 2 and the connection between the at least one hollow tube 4a of the second end face 4 and the corresponding blind hole provided in the cladding of the electric powertrain form an invariant around which the rotation is carried out.This rotation has the effect of changing the axis D of the base of the electric compressor 1 so that it is arranged in a different volume from the front engine compartment.

[0050] It will be understood that any pattern that can be inscribed in a circle can be used. In particular, all regular polyhedra will be mentioned, such as the square, the pentagon, the hexagon, the heptagon and the octagon, the holes being located at the vertices and / or regularly on the edges of said polyhedra.

[0051] Figure [Fig.7] illustrates the cladding of the electric powertrain 2 as well as the blind holes 5a, 6a, 6b that it comprises.

[0052] A first drilling 5a is designed so as to correspond to the hollow tube 3a of the first fixing plate 3.

[0053] A second hole 6a and a third hole 6b are designed so as to each correspond to one of the hollow tubes 4a, 4b of the second fixing plate 4. The holes in the cladding of the electric powertrain and the hollow tubes of the fixing plates 3, 4 are designed so as to be secured by fixing means provided with a thread capable of engaging with the thread present in each blind hole. The fixing means may be a screw or a threaded rod. equipped with a nut.

[0054] In order to solve the technical problem and accommodate several different configurations of the electric compressor and the powertrain in the front engine compartment, a matching of the plurality of holes in each of the fixing plates 3, 4 with the plurality of blind holes provided in each of the cladding end faces lc, lf is chosen in order to obtain a particular angle between the axis D of the electric compressor and the direction T of the blind holes of the cladding of the electric powertrain. By changing the matching, the arrangement of the electric compressor relative to the electric powertrain is thus modified, and, in turn, the space available in the front engine compartment in order to accommodate the compressor.

[0055] In figure [Fig.8], the angle between the axis D of the electric compressor and the direction T of the blind fixing holes on the casing of the electric power unit is equal to 30°. In figure [Fig.9], the angle is equal to -30°. In figure [Fig. 10], the angle is equal to 90°.

[0056] Several sets of plates 3, 4 could also be provided comprising hollow tubes 3a, 4a and 4b which are different or positioned differently so as to increase the possibilities of mounting configurations of the compressor depending on its environment.

Claims

Claims

1. Motor vehicle comprising an electric compressor (1) and an electric powertrain (2), each provided with a covering, characterized in that the electric compressor (1) is fixed to the covering of the electric powertrain (2) by means of a fixing system comprising two parallel fixing plates (3, 4) each provided with at least one hollow tube (3a, 4a) designed so as to be able to be reversibly secured to a blind hole made in the covering of the electric powertrain, the electric compressor (1) being able to be arranged in at least two different positions relative to the electric powertrain (2), each associated with a different securing of the plurality of perforations of the fixing plates (3, 4) with the blind holes of the covering of the electric compressor (1) after a different matching of the plurality of perforations and the blind holes.

2. Motor vehicle according to claim 1, in which the plurality of perforations provided in each fixing plate (3, 4) form a first pattern, the blind holes provided in the covering of the electric compressor on each of the two distal faces of the compressor form a second pattern.

3. A motor vehicle according to claim 2, wherein the first pattern and the second pattern are identical.

4. A motor vehicle according to claim 2 or 3, wherein the pattern is circular.

5. A motor vehicle according to claim 2 or 3, wherein the pattern forms a regular polyhedron, in particular a pattern in the shape of a triangle, square, pentagon, hexagon, heptagon or octagon.

6. Motor vehicle according to any one of claims 1 to 5, in which the covering of the electric compressor comprises a first lateral face (Id), closed on itself, connected by one end to a first end face (le) and by the other end to one end of a second lateral face (le), also closed on itself, the other end of the second lateral face le being connected to a second end face (If), the first end face (le) and the second end face (If) forming the distal faces of the covering with which the fixing plates (3, 4) are respectively secured.

7. Method of manufacturing a motor vehicle according to any one of claims 1 to 6, in which: a. the space available in the front engine compartment after installation of the electric powertrain (2) is determined for the installation of an electric compressor (1), b. a position to be taken by the electric compressor (1) is determined depending on the space available, then the correspondence between the perforations of the fixing plates (3, 4) and the blind holes made in the casing of the electric compressor (1) is determined so that the position of the compressor resulting from this matching corresponds to the determined position, c. the two fixing plates (3, 4) are arranged so that the perforations of the fixing plates (3, 4) and the blind holes made in the casing of the electric compressor (1) are matched as determined, then the two fixing plates (3, 4) are secured to the casing of the electric compressor (1) by means of the fixing means (3c, 4c), d. each hollow tube of the fixing plates (3, 4) is secured to a blind hole (5a, 6a, 6b) in the cladding of the electric powertrain (2) by means of the fixing means (3b, 4b).

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