Arrangement for a motor vehicle

Abstract

Motor vehicle arrangement comprising • - an attachment part (1), • - at least one first item of equipment from a cooler (2) or an expansion valve (3) of a thermal management circuit of a passenger compartment of the motor vehicle, • - a cradle (4) of the motor vehicle, characterized in that the attachment part (1) is attached to the cradle (4) and comprises a first attachment area for the first item of equipment.

Description

[0001] TITLE: Arrangement for motor vehicle.

[0002] The invention relates to an arrangement comprising a fastening part for components of a motor vehicle. The invention also relates to a motor vehicle comprising such an arrangement.

[0003] To reduce development costs, thermal vehicle platforms are reused to produce electric or hybrid vehicles.

[0004] However, the installation of new components (including, for example, a high-voltage battery and a high-voltage battery cooling circuit) in a pre-existing vehicle structure presents constraints on the spatial arrangement of these new components. The constraints concern not only the space available to accommodate the new components, but also the routes of the new pipes and cables required for these components.

[0005] The aim of the invention is to provide a solution for installing new components in a pre-existing vehicle structure while taking into account the various constraints previously identified. In particular, the invention makes it possible to produce a device that is simple and reliable, which allows components, pipes and cables to be fixed in a given area of ​​the motor vehicle without modifying the pre-existing vehicle structure.

[0006] To this end, the invention relates to an arrangement for a motor vehicle comprising

[0007] - a fixing part,

[0008] - at least one first piece of equipment taken from a cooler or an expansion valve of a thermal management circuit of a passenger compartment of the motor vehicle,

[0009] - a cradle of the motor vehicle, the fixing part being fixed to the cradle and comprising a first fixing zone for the first equipment.

[0010] In one embodiment, the arrangement further comprises a second piece of equipment, in particular taken from a cooler or an expander of a cooling circuit of the motor vehicle, and the fixing part comprises a second fixing zone for the second piece of equipment.

[0011] In one embodiment, the arrangement further comprises an anti-roll bar disposed between the cradle and the attachment piece, a geometry of the attachment piece being defined so as to create a passage for the anti-roll bar between the cradle and the attachment piece.

[0012] In one embodiment, the fixing part of the arrangement comprises a first face, a lower surface of the first face being placed opposite an upper surface of the cradle, an upper surface of the first face providing a support for placing the first equipment so as to allow its fixing to the first fixing zone, and the upper surface of the first face providing a support for placing the second equipment so as to allow its fixing to the second fixing zone.

[0013] In one embodiment, the attachment part of the arrangement further comprises

[0014] - a second face arranged perpendicular to the first face of the fixing part, the second face comprising the first fixing zone intended to fix the first equipment, and / or - a third face arranged perpendicular to the first face of the fixing part, the third face comprising the second fixing zone intended to fix the second equipment.

[0015] In one embodiment, the arrangement further comprises a steering rack attached to the cradle, and the attachment piece is attached to the steering rack.

[0016] In one embodiment, the fixing part of the arrangement is made by folding at least one steel plate, in particular the fixing part comprises at least two steel plates folded and assembled together by welding.

[0017] In one embodiment, the arrangement comprises

[0018] - a set of pipes of a thermal circuit of a traction battery of the motor vehicle, and

[0019] - a set of wiring connecting an electric traction motor of the motor vehicle to the traction battery of the motor vehicle.

[0020] In addition, the fixing part comprises at least one fixing area for at least one pipe of the pipe assembly and / or at least one fixing area for at least one wiring of the wiring assembly.

[0021] The invention further relates to a motor vehicle comprising an arrangement according to the invention.

[0022] 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:

[0023] Figure 1 schematically represents a motor vehicle equipped with an arrangement according to an embodiment of the invention. Figure 2 defines a direct orthonormal reference frame of a motor vehicle equipped with an arrangement according to an embodiment of the invention.

[0024] Figure 3 is a first sectional view of an arrangement according to one embodiment of the invention.

[0025] Figure 4 is a second sectional view of an arrangement according to one embodiment of the invention.

[0026] Figure 5 is a perspective view of an arrangement according to one embodiment of the invention.

[0027] Figure 6 is a first perspective view of a fixing part according to one embodiment of the invention.

[0028] Figure 7 is a second perspective view of a fastener according to one embodiment of the invention.

[0029] Figure 8 is a schematic top view of an arrangement according to one embodiment of the invention.

[0030] Figure 9 is a top view of an arrangement according to one embodiment of the invention.

[0031] An embodiment of a motor vehicle 100 according to the invention is described below with reference to FIG. 1. The motor vehicle 100 is a motor vehicle of any type, in particular a passenger vehicle or a utility vehicle.

[0032] The motor vehicle 100 comprises an electric powertrain. In one embodiment, the motor vehicle 100 is an all-electric vehicle.

[0033] For the purposes of the description, and with reference to Figure 2, we use a direct orthonormal reference frame R0, with axes X, Y, Z, classically used in automobile design, in which

[0034] - the X axis designates the front-rear longitudinal direction of the vehicle, facing backwards,

[0035] - the Y axis designates the transverse direction and is oriented towards the right of the vehicle, and

[0036] - the Z axis designates the vertical direction, and is oriented upwards.

[0037] In the remainder of the document, the terms “lower face”, “lower surface”, “upper face”, “upper surface” are defined with reference to the direction of the vertical axis Z of the RO reference frame.

[0038] Similarly, the terms "front" and "rear" are defined with reference to the direction of the longitudinal axis X of the RO reference frame.

[0039] In one embodiment, the structure of the platform used to construct the motor vehicle 100 is taken mainly, or even entirely, from a thermal vehicle structure.

[0040] In the embodiment presented in the remainder of the document, the structure of the motor vehicle 100 does not undergo any modification. In other words, the structure of the motor vehicle is not modified by the addition of new components, nor by the installation of new pipes or wiring, nor by the fixing of new elements in connection with the installation of an electric powertrain.

[0041] In order to meet this constraint, certain components of the motor vehicle 100 must be located in an area located outside the engine compartment of the motor vehicle. In addition, pipes or cables connecting these components to other components located in the engine compartment must be adapted, in particular lengthened, and fixed.

[0042] The structure of the motor vehicle 100 comprises a zone called a “tunnel zone” usually present and used on thermal vehicles for the installation of the exhaust and pollution control components (which are not fitted to all-electric vehicles). In an all-electric vehicle, the tunnel zone 90 can be used for the installation of components outside the engine compartment, and for the passage of wiring or pipes, as is the case in the motor vehicle 100. The motor vehicle 100 further comprises a traction battery 70, also called a high-voltage battery 70.

[0043] The motor vehicle 100 is equipped with a motor vehicle arrangement 10 comprising

[0044] - a fixing part 1,

[0045] - at least one first piece of equipment, taken from a cooler 2 or an expansion valve 3 of a thermal management circuit 20 of a passenger compartment of the motor vehicle,

[0046] - a cradle 4 of the motor vehicle, the fixing part 1 being fixed to the cradle 4 and comprising a first fixing zone for the first equipment.

[0047] In the embodiment described, the arrangement 10 further comprises a second piece of equipment, in particular taken from a cooler 2 or an expansion valve 3 of a thermal management circuit 20 of a passenger compartment of the motor vehicle, and the fixing part 1 comprises a second fixing zone for the second piece of equipment.

[0048] Thus, the arrangement 10 according to the invention makes it possible to fix the first and second equipment by means of a single fixing part 1 which is fixed to the cradle 4. In the embodiment described, the arrangement 10 comprises a cooler 2 and an expansion valve 3 of a thermal management circuit 20 of a passenger compartment of the motor vehicle 100. The cooler 2 and the expansion valve 3 are arranged in series on a loop of a thermal management circuit 20 of a passenger compartment of the motor vehicle 100. A heat transfer fluid circulating in the first loop is used for heating the passenger compartment. The function of the expansion valve 3 is to prevent excess pressure in the conduits of the thermal management circuit 20. The term "fixing zone" is used to designate a surface portion of the fixing part 1 which comprises an arrangement contributing to fixing a pipe or wiring.The arrangement may simply be a surface portion serving as a support, and / or at least one hole made in the surface portion, and / or a threaded shaft and / or a centering pin fixed to the surface portion, and / or a strapping arranged on the surface portion and intended to hold a pipe or wiring in a given position. Other embodiments of the fixing part 1, in particular of the arrangement, are also possible.

[0049] Advantageously, the arrangement 10 further comprises a second piece of equipment, taken from a cooler 2 or an expansion valve 3 of a thermal management circuit 20 of a passenger compartment of the motor vehicle, and the fixing part 1 comprises a second fixing zone for the second piece of equipment.

[0050] An embodiment of an arrangement 10 according to the invention is more specifically described by Figures 3 to 5.

[0051] Figures 3 and 4 represent a longitudinal section of an arrangement 10 according to the invention, that is to say a section along a plane (X, Z),

[0052] - figure 3 showing the position of an electric traction motor 40 equipping the motor vehicle 100 and

[0053] - figure 4 showing wiring and pipes which are hidden by the motor 40 in figure 3.

[0054] Figures 3 and 4 illustrate the position of the fixing part 1 relative to the tunnel zone 90. The fixing part 1 is partially located in the tunnel zone 90, a rear end 19 of the fixing part 1 being arranged in a front end 91 of the tunnel zone 90. Figures 3 to 7 further illustrate the geometry of a first face 11 of the fixing part 1.

[0055] The first face 11 of the fixing part 1 is defined so that, when the fixing part 1 is fixed to the cradle 4,

[0056] - a lower surface 111 of the first face 11 is opposite an upper surface 41 of the cradle 4,

[0057] - an upper surface 112 of the first face 11 provides support for placing the first equipment so as to allow its attachment to the first attachment zone, and

[0058] - the upper surface 112 of the first face 11 providing support for placing the second equipment so as to allow its attachment to the second attachment zone.

[0059] A rear end of the first face 11 is extended by a first tab 113 allowing the fixing part 1 to be fixed to the cradle 4, as is more specifically visible in FIG. 5. In addition, a front end 18 of the fixing part 1 comprises two fixing zones 181, 182 intended to collaborate with two existing holes in a rack 5 equipping the motor vehicle 100. In other words, the fixing part 1 is fixed both to the cradle 4 and to the rack 5. As a remark, the fixing points arranged on the rack 5 of an arrangement 10 are advantageously fixing points initially present on thermal vehicles for fixing heat shields.

[0060] In the embodiment described, the arrangement 10 further comprises an anti-roll bar 6 arranged between the cradle 4 and the fixing part 1 and the geometry of the fixing part 1 is defined so as to create a passage for the anti-roll bar 6 between the cradle 4 and the fixing part 1. In particular, a section along a plane (X, Z) of the first face 11 has a curvature for the passage of the anti-roll bar 6. The fixing part 1 further comprises

[0061] - a second face 12 arranged perpendicular to the first face 11 of the fixing part 1, the second face 12 comprising the first fixing zone intended to fix the first equipment, and / or

[0062] - a third face arranged perpendicular to the first face 11 of the fixing part 1, the third face comprising the second fixing zone intended to fix the second equipment.

[0063] The fixing part 1 is advantageously produced by folding at least one steel plate, in particular the fixing part 1 comprises at least two steel plates folded and assembled together by welding.

[0064] Thus, the first tab 113 extending the first face 11 for its attachment to the cradle 4 is produced by folding. In addition, the curvature of the first face 11 is also produced by folding. Similarly, the first face 11 is extended at its front end 18 by a second and a third tab 114, 115 which are folded so as to extend mainly perpendicular to the first face 11.

[0065] In addition, the second and third faces are welded to the first face 11, so as to extend substantially perpendicular to the first face 11.

[0066] The upper end 121 of the second face 12 is also extended by four separate tabs 122, 123, 124, 125, notably produced by folding.

[0067] Arrangement 10 may further comprise

[0068] - a set of pipes 60 of a thermal management circuit of the traction battery 70, and

[0069] - a set of wiring 50 connecting the electric traction motor 40 to the traction battery 70.

[0070] In addition, the fixing part 1 advantageously comprises fixing zones for at least one pipe 61, 62, 63, 64, 65, 66 of the set of pipes 60 and for at least one wiring 501, 502 of the set of wiring.

[0071] The different fixing zones arranged on the faces and tabs of the fixing part 1, for fixing equipment, cables and pipes, are described below with reference to figures 4 and 5.

[0072] The second face 12 comprises in particular a notch 126 and a hole 127 intended for fixing the cooler 2 and the third face 13 comprises two notches 131, 132 intended for fixing the regulator 3.

[0073] The fixing part 1 is equipped with five straps 141, 142, 143, 144, 145 for fixing pipes 61, 62, 63, 64, 65, 66 of the pipe assembly 60, the straps being arranged as follows:

[0074] - two rings 141, 142 are arranged on the second face 12,

[0075] - two straps 143, 144 are arranged on the second tab 114,

[0076] - a strapping 145 is arranged on the third tab 115.

[0077] The fixing part 1 is further equipped with numerous holes, including a first hole 151 arranged on the third tab 115 extending the second face 12, the first hole 151 being intended to collaborate with a fixing means arranged on a first high-voltage wiring 51 of the wiring assembly 50. In addition, a second hole 152 arranged on the second tab 114, the second hole 152 being intended to collaborate with a fixing means arranged on a second high-voltage wiring 52 of the wiring assembly 50. In one embodiment, the fixing means arranged on the wiring may be a threaded shaft and / or a centering pin arranged on each wiring. Finally, the arrangement 10 according to the invention, and in particular the fixing part 1, contribute to reducing the production cost of an all-electric vehicle from a structure of a thermal vehicle.

[0078] Indeed, the arrangement according to the invention makes it possible to install components in an existing vehicle structure. In particular, the arrangement according to the invention makes it possible to develop an electric vehicle on the basis of an existing thermal vehicle structure, without modifying the existing structure.

[0079] The arrangement according to the invention also makes it possible to reuse existing parts as they are, such as the regulator 3. In addition, certain pre-existing fixing interfaces, such as holes made on a rack initially designed for a thermal vehicle, could be reused to fix the fixing part according to the invention.

[0080] The arrangement according to the invention further ensures the positioning and holding of pipes or wiring that must pass through the tunnel area 90. A single part is used to fix both two high-voltage wirings and a plurality of water pipes. The arrangement according to the invention thus makes it possible to group components, wirings and pipes in the same relatively small area, which can facilitate the maintenance of the motor vehicle.

[0081] Furthermore, the fixing part according to the invention is not fixed to the body but to two elements which are themselves fixed to the body of the vehicle. The body thus does not require the addition of new fixing interfaces, since the fixing part is screwed onto elements fixed to the body. The absence of new fixing interfaces is advantageous since no specific tools are required and / or no specific operation is to be carried out on the body of the vehicle. Thus the invention advantageously makes it possible to add an additional function to the body without requiring modification of the existing body.

Claims

CLAIMS 1. Arrangement for motor vehicle comprising - a fixing part (1), - at least one first piece of equipment taken from a cooler (2) or an expansion valve (3) of a thermal management circuit of a passenger compartment of the motor vehicle, - a cradle (4) of the motor vehicle, characterized in that the fixing part (1) is fixed to the cradle (4) and comprises a first fixing zone for the first equipment.

2. Arrangement (10) according to the preceding claim, characterized in that it further comprises a second piece of equipment, in particular taken from a cooler (2) or an expander (3) of a cooling circuit of the motor vehicle, and in that the fixing part (1) comprises a second fixing zone for the second piece of equipment.

3. Arrangement (10) according to one of the preceding claims, characterized in that it further comprises an anti-roll bar (6) arranged between the cradle (4) and the fixing part (1), a geometry of the fixing part (1) being defined so as to create a passage for the anti-roll bar (6) between the cradle (4) and the fixing part (1).

4. Arrangement (10) according to one of claims 2 or 3, characterized in that the fixing part (1) comprises a first face (11), a lower surface (111) of the first face (11) being placed opposite an upper surface (41) of the cradle (4), an upper surface (112) of the first face (11) providing support for placing the first equipment so as to allow its fixing to the first fixing area, and the upper surface (112) of the first face (11) providing support for placing the second equipment so as to allow its fixing to the second fixing area.

5. Arrangement (10) according to the preceding claim, characterized in that the fixing part (1) further comprises - a second face (12) arranged perpendicular to the first face (11) of the fixing part (1), the second face (12) comprising the first fixing zone intended to fix the first equipment, and / or - a third face arranged perpendicular to the first face (11) of the fixing part (1), the third face comprising the second fixing zone intended to fix the second equipment.

6. Arrangement (10) according to one of the preceding claims, characterized in that it further comprises a steering rack (5) fixed to the cradle (4), and in that the fixing part (1) is fixed to the steering rack (5).

7. Arrangement (10) according to one of the preceding claims, characterized in that the fixing part (1) is produced by folding at least one steel plate, in particular the fixing part (1) comprises at least two steel plates folded and assembled together by welding.

8. Arrangement (10) according to one of the preceding claims, characterized in that it comprises: - a set of pipes (60) of a thermal circuit of a traction battery (70) of the motor vehicle, and - a set of wiring (50) connecting an electric traction motor (40) of the motor vehicle to the traction battery (70) of the motor vehicle, and in that the fixing part (1) comprises at least one fixing zone for at least one pipe of the pipe assembly (60) and / or at least one fixing zone for at least one wiring (50) of the wiring assembly.

9. Motor vehicle comprising an arrangement (10) according to one of the preceding claims.

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