Motor vehicle comprising an electric compressor fixed to the casing of an electric powertrain by means of a fixing system allowing several positions

Abstract

Motor vehicle comprising an electric compressor (1) fixed to the casing of an electric powertrain (2) by means of a fixing system, comprising a first part and a second part each formed of at least two hollow tubes (3a, 3b, 4a, 4b, 4c, 4d) integral with the casing of the electric compressor (1), a third part and a fourth part each comprising at least one blind hole (5a, 6a, 6b) integral with the casing of the electric powertrain, within the first part and the second part, two adjacent hollow tubes form a predetermined angle, 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 predetermined angle resulting from a different matching of one of the hollow tubes of the first and second parts with the blind holes of the third and fourth parts.Figure for abstract: Fig 8.

Description

Title of the invention: Motor vehicle comprising an electric compressor fixed to the trim of an electric powertrain by means of a fixing system allowing several positions 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 subject of the invention is a motor vehicle comprising an electric compressor and an electric powertrain.The electric compressor is fixed to the casing of the electric powertrain by means of a fixing system, comprising a first part and a second part each formed of at least two hollow tubes integral with the casing of the electric compressor, a third part and a fourth part each comprising at least one blind hole integral with the casing of the electric powertrain, within the first part and the second part, two adjacent hollow tubes form a predetermined angle, the electric compressor being able to be arranged in at least two different positions relative to the electric powertrain, each associated with a different predetermined angle resulting from a different matching of one of the hollow tubes of the first and second parts with the blind holes of the third and fourth parts.

[0010] The angle between the hollow tubes within the first part or the second part may be equal to 90°.

[0011] The first part and the second part may each comprise at least three hollow tubes.

[0012] The first part and the second part may have the same spatial shift as the third part and the fourth part.

[0013] The invention also relates to a method of manufacturing a motor vehicle as described above, in which:

[0014] a. the space available in the front engine compartment after installation of the electric powertrain for the installation of an electric compressor is determined,

[0015] b. a position to be taken by the electric compressor is determined as a function of the available space, then the correspondence between the hollow tubes of the first and second parts and the blind holes of the third and fourth parts is determined so that the position of the compressor resulting from this correspondence corresponds to the determined position,

[0016] c. the electric compressor is placed in the predetermined position so that at least one hollow tube of the first and second parts is placed in correspondence with at least one blind hole of the third and fourth parts, then the hollow tubes and the corresponding blind holes are secured by means of fixing means. Brief description of the drawings

[0017] 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 in reference to the attached drawings in which:

[0018] - figures [Fig.la] and [Fig.lb] illustrate a front engine compartment of a electric vehicle, comprising an electric compressor and an electric powertrain in two different positions,

[0019] - Figure [Fig.2] illustrates the main parts of a compressor housing electric,

[0020] - figures [Fig.3] and [Fig.4] illustrate the main planes and axes in a com electric presser,

[0021] - figure [Fig.5] illustrates the parts of the fixing system integral with the compressor electric,

[0022] - figure [Fig.6] illustrates the parts of the fixing system integral with the mo- group electric propulsion,

[0023] - figures [Fig.7] and [Fig.8] illustrate a first particular embodiment of the fixing system according to the invention, and

[0024] - figures [Fig.9], [Fig. 10] and [Fig. 11] illustrate a first embodiment by particular of the fixing system according to the invention. Detailed description

[0025] 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.

[0026] The electric compressor 1 is fixed to the casing of the electric powertrain 2 by means of a fixing system comprising several parts distributed over the casing of the electric powertrain and over the casing of the electric compressor. Each part of the fixing system secured to the casing of the electric compressor comprises at least two hollow tubes arranged in intersecting directions. Each part of the fixing system secured to the casing of the electric powertrain comprises at least one blind hole. The direction of at least one blind hole of a part secured to the casing of the electric powertrain corresponds to the direction of at least one hollow tube of a part secured to the casing of the electric compressor. A blind hole and a corresponding hollow tube are secured by means of fixing means, cooperating with an internal thread of the blind hole.The means of fixing include a screw or a threaded rod / nut assembly.

[0027] Figures [Fig.la] and [Fig.lb] illustrate different arrangements of the compressor electric 1 in relation to electric powertrain 2 and in relation to the front engine compartment.

[0028] 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 1c, a first side face 1d, a second side face 1c and a second end face 1f.

[0029] 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.

[0030] 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.

[0031] The electric compressor housing cover and the compressor base cover are connected together at their open ends to form the electric compressor cover.

[0032] Still in the figure [Fig.2], it can be seen that the base 1b of the electric compressor has an elongated shape, forming a protrusion on one side of the casing 1a of the electric compressor, said protrusion making it possible to connect the electrical power supply connectors, as well as the air inlet and outlet hoses.

[0033] 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.

[0034] We further define the plane B as a median plane of the base 1b of the electric compressor comprising the axis of revolution R of the casing 1a of the electric compressor.

[0035] The axis D of the electric compressor is defined as the intersection of plane A and plane B.

[0036] Figure [Fig.4] illustrates these same planes and axes without the electric compressor in order to better account for their spatial and angular relationships.

[0037] A first part of the fixing system is fixed to the casing of the electric compressor on the first end face of the casing, and comprises two tubes 3a, 3b arranged at 90° to each other. Figure [Fig.5] illustrates a particular embodiment in which the two hollow tubes 3a, 3b of the first part of the fixing system are intersecting.

[0038] A second part of the fixing system is fixed to the casing of the electric compressor on the first lateral face Id, and comprises four hollow tubes 4a, 4b, 4c, 4d arranged so as to be parallel and diametrically opposed relative to the axis of revolution of the casing two by two, a first group of hollow tubes being arranged in a first direction, a second group of hollow tubes being arranged in a second direction forming an angle of 90° with the first direction.

[0039] In one embodiment, the hollow tubes 3a, 3b of the first part of the fixing system are arranged in a first plane parallel to a second plane in which the hollow tubes 4a, 4b, 4c, 4d of the second part of the fixing system are arranged.

[0040] Figure [Fig.6] illustrates the cladding of the electric powertrain 2, which is provided with a third part and a fourth part of the fixing system.

[0041] The third part of the fixing system comprises at least one blind hole 5a arranged normally relative to the surface of the cladding.

[0042] The fourth part of the fixing system comprises at least two blind holes 6a, 6b arranged normally relative to the surface of the cladding.

[0043] It will be understood that the first and second parts of the fixing system arranged on the surface of the electric compressor 1 are designed so as to cooperate with the third and fourth parts of the fixing system arranged on the surface of the electric powertrain 2.

[0044] Figures [Fig.7] to [Fig. 11] illustrate different arrangements of the electric compressor 1 relative to the electric powertrain 2.

[0045] In a particular embodiment, illustrated by figures [Fig.7] and [Fig.8], the hollow tubes 3a,3b of the first part and the hollow tubes 4a,4b,4c,4d of the second part are arranged so that their directions form an angle of 90°. In addition, the hollow tubes 3a,3b of the first part are included in a plane parallel to the plane comprising the hollow tubes 4a,4b,4c,4d of the second part.

[0046] In both figures, one of the hollow tubes 3a, 3b of the first part is connected to the blind hole 5a of the third part by fixing means capable of engaging in the thread of the blind hole. Similarly, two of the hollow tubes 4a, 4b, 4c, 4d of the second part are each connected to one of the blind holes 6a, 6b of the fourth part by fixing means capable of engaging in the thread of the blind holes.

[0047] The fixing means are in particular a screw or a threaded rod / nut assembly.

[0048] Figure [Fig.7] illustrates the electric compressor 1 in a first position relative to the electric powertrain 2.

[0049] Figure [Fig.8] illustrates the electric compressor 1 in a second position relative to the electric powertrain 2, the second position being essentially at an angle of 90° relative to the first position.

[0050] In another embodiment, illustrated by figures [Fig.9] to [Fig.1 1], the hollow tubes of the first part and the second part are arranged so that their directions form an angle of less than 90°, in particular 15°. When the angle is less at 90°, a greater number of tubes can be installed in each fixing system. At least three tubes can then be arranged in each part of the fixing system linked to the electric compressor 1. As in the previous embodiments, all the tubes of the same part of the fixing system are arranged in the same plane. More precisely, the fixing system comprises a first part comprising three tubes 7a, 7b, 7c arranged in a first plane and spaced two by two by a predefined angle. The fixing system comprises a second part provided with six hollow tubes 8a, 8b, 8c, 8d, 8e, 8f arranged in a second plane. The six hollow tubes 8a, 8b, 8c, 8d, 8e, 8f are arranged so as to be parallel two by two and diametrically opposed in pairs, the pairs of hollow tubes being spaced two by two by the same predefined angle.

[0051] In the three figures, one of the hollow tubes 7a, 7b, 7c of the first part is connected to the blind hole 5a of the third part by fixing means capable of engaging in the thread of the blind hole. Similarly, two of the hollow tubes 8a, 8b, 8c, 8d, 8e, 8f of the second part are each connected to one of the blind holes 6a, 6b of the fourth part by fixing means capable of engaging in the thread of the blind holes. The fixing means are in particular a screw or a threaded rod / nut assembly.

[0052] Figure [Fig.9] illustrates the electric compressor 1 forming an angle of 15° relative to the normal of the surface of the electric powertrain 2.

[0053] Figure [Fig. 10] illustrates the electric compressor 1 in a position substantially similar to the position illustrated by [Fig.5].

[0054] Figure [Fig.l 1] illustrates the electric compressor 1 forming an angle of 15° relative to the normal of the surface of the electric powertrain 2, symmetrical to the position of figure [Fig.6] relative to a plane normal to the surface of the powertrain.

[0055] In order to solve the technical problem and to accommodate several different configurations of the electric compressor and the powertrain in the front engine compartment, a matching of the hollow tubes integral with the electric compressor 1 with the blind holes made in the casing of the electric powertrain 2 is chosen in order to obtain a particular angle between the axis D of the electric compressor and the direction of the blind holes for fixing on the casing 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 house the compressor.

Claims

Claims

1. Motor vehicle comprising an electric compressor (1) and an electric powertrain (2), characterized in that the electric compressor (1) is fixed to the casing of the electric powertrain (2) by means of a fixing system, comprising a first part and a second part each formed of at least two hollow tubes (3a, 3b, 4a, 4b, 4c, 4d) integral with the casing of the electric compressor (1), a third part and a fourth part each comprising at least one blind hole (5a, 6a, 6b) integral with the casing of the electric powertrain, within the first part and the second part, two adjacent hollow tubes form a predetermined angle,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 predetermined angle resulting from a different matching of one of the hollow tubes of the first and second parts with the blind holes of the third and fourth parts.,

2. A motor vehicle according to claim 1, wherein the angle between the hollow tubes within the first part or the second part is 90°.

3. A motor vehicle according to claim 1 or 2, wherein the first part and the second part each comprise at least three hollow tubes.

4. A motor vehicle according to any one of claims 1 to 3, wherein the first part and the second part have the same spatial offset as the third part and the fourth part.

5. A method of manufacturing a motor vehicle according to any one of claims 1 to 4, wherein: a. the space available in the front engine compartment after installation of the electric powertrain (2) for the installation of an electric compressor (1) is determined, b. a position to be taken by the electric compressor (1) is determined as a function of the space available, then the correspondence between the hollow tubes (3a, 3b, 4a, 4b, 4c, 4d) of the first and second parts and the blind holes (5a, 6a, 6b) of the third and fourth parts is determined so that the position of the compressor resulting from this matching corresponds to the determined position, c. the electric compressor (1) is arranged in the predetermined position so that at least one hollow tube (3a,3b,4a,4b,4c,4d) of the first and second parts is matched with at least one blind hole (5a, 6a, 6b) of the third and fourth parts, then the hollow tubes and the corresponding blind holes are secured by means of fixing means.

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