Structure of an electric motor vehicle

Abstract

The invention relates to a structure (1) of a motor vehicle with an electric drive, comprising at least two side rails (3) at least partially delimiting a recess (4) designed to receive a drive battery (2) of the vehicle, each side rail (3) comprising a plurality of separate attachment areas (8) which are distributed over at least a portion of the periphery (9) of the recess (4) and designed to allow the battery (2) to be attached to the side rail (3), at least one of the attachment areas (8), on each side rail (3), constituting a reinforced attachment area (10) comprising at least one lifting reinforcement (11) designed to form a point for lifting the vehicle using lifting means.

Description

Description Title of the invention: Structure of an electric motor vehicle.

[0001] The present invention claims priority from French application 2301877 filed on March 1, 2023, the content of which (text, drawings and claims) is here 5 incorporated by reference. The technical field relates to motor vehicle structures for attaching a powertrain battery, reinforcement devices for obtaining such a structure and vehicles having such a structure.

[0002] Electric motor vehicles are experiencing growing interest from 10 share of customers, while their autonomy is constantly improved by car manufacturers. To achieve this, the industrial players involved have invested heavily in the development of new technologies to offer ever more efficient batteries, that is to say batteries offering increased charging speeds, constantly increasing capacities 15 increase and high energy densities.

[0003] Along with improving technology, car manufacturers are also focusing on manufacturing costs in order to offer their customers vehicles at affordable prices.

[0004] In this context, the traction battery of certain motor vehicles is 20 fixed under the side members of the vehicle, by screwing the edges of the battery casing to the side member using screws which screw into nuts welded onto plates, themselves welded onto the side member. Attaching the battery obviously requires numerous fixing screws.

[0005] Furthermore, car manufacturers must be careful about the 25 side member of the vehicle, for lifting purposes, at least one support point for a lifting jack. The support point must therefore reinforce the side member to prevent it from deforming during a lifting operation.

[0006] In a quest to reduce manufacturing costs, it is necessary to find a solution to simplify vehicles and the attachment of batteries. 30 traction.

[0007] In this technical context, an aim of the present invention is to provide a solution making it possible to reduce the constituent elements of the structure while allowing the battery to be fixed and the spar to be reinforced for lifting operations.

[0008] To this end, the present invention relates to a structure of an electrically powered motor vehicle comprising at least two side members at least partially delimiting a housing designed to accommodate a battery for driving the vehicle, each side member comprising a plurality of zones 5 fixing zones, distinct, distributed over at least part of the perimeter of the housing and designed to allow the battery to be fixed to the side member, at least one of the fixing zones, on each side member, constituting a reinforced fixing zone comprising at least one lifting reinforcement designed to form a lifting point of the vehicle by a lifting means. [OOffiP] The invention also relates to a reinforcing device designed to be mounted on a side member to form a reinforced fixing zone of a structure according to the invention, each device comprising a reinforcing plate designed to rest on a side member and comprising a screw hole provided in the reinforcing plate to allow the battery to be fixed, the reinforcing plate 15 further comprising a reinforcing rib sized to reinforce the reinforced attachment area, when the device is attached to the side member, and to form a lifting point.

[0010] The invention finally relates to a motor vehicle having a structure according to the invention. [0ŒD1] Thus, the structure according to the invention makes it possible to ensure the fixing of the motorization battery and to save at least two fixing plates usually required, since they are each replaced by a reinforced fixing zone. The device according to the invention makes it possible to produce a reinforced fixing zone in a simple manner. The structure and the device according to the invention make it possible to reduce the manufacturing costs of a vehicle according to the invention.

[0012] According to one embodiment of the invention, each fixing zone comprises a reinforcement plate designed to allow the side member to be screwed between the battery and the reinforcement plate.

[0013] Advantageously, each reinforced fixing zone comprises a reinforcement device forming the reinforcement plate and the lifting reinforcement.

[0014] Advantageously, each reinforcement device is formed from a stamped sheet metal.

[0015] According to one possibility, each reinforcing device comprises a reinforcing rib.

[0016] According to one embodiment of the structure, the reinforcement device is welded to a spar of the structure.

[0017] The invention will be better understood upon reading the detailed description which follows, given solely as a non-limiting example and made with reference to 5 to the attached drawings in which:

[0018] [Fig. 1] Figure 1 represents a perspective view of a vehicle structure according to the invention implementing at least two reinforcement devices of Figure 2;

[0019] [Fig. 2] Figure 2, represents a perspective view of a device of 10 reinforcement according to the invention making it possible to obtain the vehicle structure of figure 1;

[0020] In these figures, the same references are used to designate the same elements.

[0021] A structure 1 of an electrically powered motor vehicle according to the invention, illustrated in FIG. 1, allows the attachment of a motor battery 2, also illustrated in FIG. 1, to the structure 1 in an optimized manner.

[0022] The structure 1 according to the invention comprises at least two side members 3 at least partially delimiting a housing 4 designed to accommodate the battery 2. Each side member 3 is formed from a sheet 5 having a U-shaped profile 6 provided with two 20 edges 7.

[0023] Each side member 3 comprises a plurality of separate fixing zones 8 distributed over at least part of the perimeter 9 of the housing 4. Each fixing zone 8 is designed to allow the battery 2 to be fixed to the side member 3. The battery 2 is fixed, for example, by screwing the battery 2 at the level of each fixing zone 8.

[0024] On each side member 3, at least one of the attachment zones 8 constitutes a reinforced attachment zone 10 comprising at least one lifting reinforcement 11 designed to form a lifting point of the vehicle. Thus, the vehicle structure 1 according to the invention comprises attachment zones 8, at least two of which 30 form a reinforced attachment zone 10.

[0025] As illustrated in Figure 1, each fixing zone 8 comprises a reinforcing plate 12 designed to allow the screwing of the side member 3 between the battery 2 and the reinforcing plate 12. The reinforcing plate 12 is, for example, welded onto the side member 3. Each reinforcing plate 12 is provided with a screwing hole 13. The screw hole 13 is obviously arranged opposite a hole made in the side member 3 to allow the passage of a fixing screw 14.

[0026] In the example illustrated in Figure 1, each reinforced fixing zone 10 comprises a reinforcing device 15, illustrated in Figure 2, forming the 5 reinforcing plate 12 as well as the lifting reinforcement 11. Advantageously, each device 15 is formed from a stamped sheet 16. As illustrated in FIG. 2, the stamped sheet 16 of the device 15 is folded into three parts 17, 18, 19 each designed to come into contact with the profile 6. One 18 of the parts 17, 18, 19 forms the plate 12 and another 19 comes into contact with a rim 7 of the spar 3, when the 10 device 15 is positioned on the side member 3. As illustrated in Figure 2, each reinforcing device 15 comprises a reinforcing rib 20 sized to reinforce the reinforced fixing zone 10, by reinforcing the profile 6 to form the lifting reinforcement 11. The rib 20 is designed to reinforce the fold between two parts 17, 18 of the stamped sheet 16. The device 15 15 obviously includes a screwing hole 13 provided in the part 18 which forms the plate 12.

[0027] According to one possibility, the device 15 is welded to the spar 3.

[0028] Thus, the structure 1 according to the invention, thanks to the reinforced fixing zone 10, makes it possible to do without at least two fixing zones 8 and lifting points. 20 distinct. The structure 1 and the device 15 according to the invention therefore have reduced manufacturing costs.

[0029] The invention is not limited to the embodiment of the vehicle structure and / or the reinforcement device described above, only by way of example, but other embodiments can be designed by those skilled in the art without departing from the scope and scope of the present invention.

Claims

DEMANDS 1. Structure (1) of an electric motor vehicle comprising at least two longitudinal members (3) at least partially defining a housing (4) designed to accommodate a vehicle motor battery (2), each longitudinal member (3) comprising a plurality of distinct attachment zones (8) distributed over at least a portion of the periphery (9) of the housing (4) and designed to allow the battery (2) to be attached to the longitudinal member (3), at least one of the attachment zones (8) on each longitudinal member (3) constituting a reinforced attachment zone (10) comprising at least one lifting reinforcement (11) designed to form a lifting point of the vehicle by a lifting means.

2. Vehicle structure (1) according to claim 1, characterized in that each attachment area (8) comprises a reinforcement plate (12) designed to allow the screwing of the longitudinal member (3) between the battery (2) and the reinforcement plate (12).

3. Vehicle structure (1) according to claim 2, characterized in that each reinforced fixing zone (10) comprises a reinforcement device (15) forming the reinforcement plate (12) and the lifting reinforcement (11).

4. Vehicle structure (1) according to claim 3, characterized in that each reinforcement device (15) is formed of a stamped sheet (16).

5. Vehicle structure (1) according to claim 3 or 4, characterized in that each reinforcement device (15) comprises a reinforcement rib (20).

6. Vehicle structure (1) according to any one of claims 3 to 5, characterized in that the reinforcement device (15) is welded to a longitudinal member (3) of the structure (1).

7. Reinforcement device (15) designed to be mounted on a stringer (3) to form a reinforced attachment zone (10) of a structure (1) according to any one of claims 3 to 6, each device (15) comprising a reinforcing plate (12) designed to rest on a longitudinal member (3) and comprising a screw hole (13) provided in the reinforcement plate (12) to allow the attachment of the battery (2), the reinforcement plate (12) further comprising a reinforcing rib (20) dimensioned to reinforce the reinforced attachment area (10), when the device (15) is attached to the longitudinal member (3), and to form a lifting point.

8. Motor vehicle having a structure (1) according to any one of claims 1 to 6.

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