DEVICE FOR HOLDING AT LEAST ONE CABLE TRAY NEAR A BATTERY COMPARTMENT

Description

[0001] The present invention relates to a device for holding at least one electrical bundle in the vicinity of a battery tray.

[0002] The invention finds a particularly advantageous, but not exclusive, application with hybrid type motor vehicles using a thermal energy source and an electrical energy source to provide traction.

[0003] US 2015 / 105209 discloses an assembly for a motor vehicle comprising a battery tray, a control unit bracket, and a wiring harness. This assembly includes a guide tunnel within which the wiring harness is located, the guide tunnel being delimited on one side by a portion of the control unit bracket and on the other side by a portion of the battery tray.

[0004] There figure 1 The figure shows a battery tray 10, specifically a tray for a lead-acid battery typically having an operating voltage of 12 volts. This battery tray 10 is intended to be mounted on a (not visible) internal combustion engine bracket positioned on a longitudinal frame 11 of the vehicle. This battery tray 10 has a base and side walls defining a space within which is arranged at least one power element capable of generating current by chemical reaction.

[0005] A control unit bracket 12, specifically an engine control unit bracket, is mounted on the battery tray 10. For this purpose, the bracket 12 is secured to the battery tray 10 using fasteners such as screws or rivets. The bracket 12 is a generally rectangular plate. The bracket 12 has mounting interfaces 13, for example, consisting of holes into which fasteners, such as screws, are inserted to engage with a control unit housing (not shown).

[0006] A DC / DC converter 15 is mounted on the battery tray 10. The DC / DC converter 15 can be attached to a side panel of the battery tray 10 using a snap-fit ​​device and / or fasteners such as screws or rivets. The DC / DC converter 15 allows the interconnection of a high-voltage electrical network, typically operating at 48 volts, with a low-voltage electrical network, typically operating at 12 volts.

[0007] The high-voltage electrical network includes a power battery, for example of the lithium-ion (or Li-lon), nickel-metal hydride (or Ni-Mh), or nickel-cadmium (Ni-Cd) type, electrically connected to one or more electric traction motors.

[0008] The low voltage electrical network includes the battery associated with the 10-cell battery as well as electrical consumers of the motor vehicle, such as a lighting system, window or seat actuators, the engine control unit, or even a starter in the case of a hybrid vehicle with a combustion engine.

[0009] An electrical harness 16.1 comprises a first end electrically connected to a terminal of the DC / DC converter 15 and a second end electrically connected to the high-voltage electrical network. The high-voltage electrical network may, for example, be located at the rear of the vehicle if the electric motor(s) are coupled to the rear axle.

[0010] An electrical harness 16.2 has a first end electrically connected to a negative terminal of the DC / DC converter 15 and a second end electrically connected to a connection terminal 17 arranged on the stretcher 11 to form the mass of the motor vehicle.

[0011] To ensure its cooling, the DC / DC converter 15 may include an inlet 18 and an outlet 19 of an internal cooling circuit, in particular a water-based cooling circuit.

[0012] In this case, the two electrical harnesses 16.1, 16.2 are held and guided by channels 20 arranged under the DC / DC converter 15. Depending on certain motor vehicle configurations, however, there is not enough space for the passage of harnesses 16.1, 16.2 and channels 20 due to the proximity of these elements to the travel area of ​​the gearbox referenced 21.

[0013] The invention aims to effectively remedy this drawback by proposing an assembly for a motor vehicle comprising: a battery tray, a computer support, in particular an engine computer support, mounted on the battery tray, and at least one wiring harness, said assembly comprising a guide tunnel within which the wiring harness is disposed, said guide tunnel being delimited on one side by a portion of the computer support and on the other side by a portion of the battery tray, a snap-fit ​​device being located in an extension of the portion of the computer support and the portion of the battery tray delimiting the guide tunnel.

[0014] The invention, thanks to the presence of the guide tunnel, allows the electrical harness to be relocated to an area where the gearbox is unlikely to interfere with it during its movements. Furthermore, the invention eliminates the need for a harness guide channel, thus reducing the overall cost. The invention also reduces the number of assembly operations required.

[0015] According to one embodiment of the invention, said assembly further comprises a DC / DC converter mounted on the battery tray.

[0016] According to one embodiment of the invention, the electrical harness comprises a first end electrically connected to the DC / DC converter and a second end connected to a connection terminal arranged on a stretcher of the motor vehicle.

[0017] According to one embodiment of the invention, the connection terminal is positioned on the side of a wall of the battery tray carrying the computer support.

[0018] According to the invention, the snap-on device includes a stud from one of the elements among the computer support and the battery tray intended to cooperate with a housing provided in the other of the elements among the computer support and the battery tray.

[0019] According to one embodiment of the invention, said assembly further comprises a guide channel inside which a second electrical bundle is inserted.

[0020] According to one embodiment of the invention, the guide chute is arranged under the DC / DC converter.

[0021] The invention also relates to a motor vehicle comprising an assembly as previously defined.

[0022] The invention will be better understood upon reading the following description and examining the accompanying figures. These figures are given only to illustrate, but in no way limit, the invention. [ Fig. 1 ] There figure 1 , already described, is a perspective view illustrating the guidance of electrical beams by means of guide channels arranged under a DC / DC converter; Fig. 2 ] There figure 2 shows a DC / DC converter comprising an electrical harness arranged inside a guide tunnel according to the invention, delimited by a portion of a computer support and a portion of a battery tray; [ Fig. 3 ] There figure 3 is a detailed perspective view of the electrical beam guidance tunnel of the figure 2 ; Fig. 4 ] There figure 4 is a rear view of the computer support including a portion at one end delimiting the electrical harness guide tunnel.

[0023] Identical, similar, or analogous elements retain the same references from one figure to another.

[0024] THE figures 2 , 3, et 4 They show a battery tray 10, specifically a lead-acid battery tray typically having an operating voltage of 12 volts. This battery tray 10 is intended to be mounted on a (not visible) internal combustion engine bracket positioned on a longitudinal frame 11 of the vehicle. This battery tray 10 has a base and side walls defining a space within which is arranged at least one power element capable of generating current by chemical reaction.

[0025] A control unit bracket 12, specifically an engine control unit bracket 12, is mounted on the battery tray 10. For this purpose, the bracket 12 is fixed to a side wall of the battery tray 10 using fasteners such as screws or rivets. The bracket 12 is in the form of a generally rectangular plate, as shown in the diagrams. figures 2 And 4 The support 12 is provided with fixing interfaces 13 consisting for example of holes into which fixing elements, such as screws, are inserted, intended to cooperate with a computer housing (not shown).

[0026] A DC / DC converter 15 is mounted on the battery tray 10. The DC / DC converter 15 can be attached to a side panel of the battery tray 10 using a snap-fit ​​device and / or fasteners such as screws or rivets. The DC / DC converter 15 allows the interconnection of a high-voltage electrical network, typically operating at 48 volts, with a low-voltage electrical network, typically operating at 12 volts.

[0027] The high-voltage electrical network includes a power battery, for example of the lithium-ion (or Li-lon), nickel-metal hydride (or Ni-Mh), or nickel-cadmium (Ni-Cd) type, electrically connected to one or more electric traction motors.

[0028] The low voltage electrical network includes the battery associated with the 10-cell battery as well as electrical consumers of the motor vehicle, such as a lighting system, window or seat actuators, the engine control unit, or even a starter in the case of a vehicle with an internal combustion engine.

[0029] An electrical harness 16.1 has a first end electrically connected to a terminal of the DC / DC converter 15 and a second end electrically connected to the high-voltage electrical network. The high-voltage electrical network may, for example, be located at the rear of the vehicle if the electric motor(s) are coupled to the rear axle.

[0030] An electrical harness 16.2 has a first end electrically connected to a negative terminal of the DC / DC converter 15 and a second end electrically connected to a connection terminal 17 located on the frame 11 to form the vehicle's ground. Advantageously, the connection terminal 17 is positioned on the side of a wall of the battery tray 10 carrying the computer bracket 12, as can be clearly seen in the figures 2 And 3 .

[0031] To ensure its cooling, the DC / DC converter 15 may include an inlet 18 and an outlet 19 of an internal cooling circuit, in particular a water-based cooling circuit.

[0032] The electrical harness 16.2 is arranged inside a guide tunnel 22. The guide tunnel 22 is delimited on one side by a portion 23 of the computer support 12 and on the other side by a portion 24 of the battery tray 10.

[0033] Portion 23 of support 12 is located at one end of the support, in this case the lower end. Portion 23 of support 12 may include a wall having a curved shape, in particular an arc shape or an L-shape, especially with a rounded corner.

[0034] Portion 24 of the battery tray 10 may include a wall with a curved shape, in particular an arc shape or an L-shape with rounded corners. Portions 23 and 24 of the computer support 12 and the battery tray 10 have complementary shapes so as to define the internal faces of the guide tunnel 22.

[0035] The guide tunnel 22 may have a cross-section having a rectangular shape, a square shape, possibly with rounded corners, a round shape, an oval shape, or any other shape suitable for the application.

[0036] As can be seen on the figure 3 , in order to ensure the mechanical stability of the guide tunnel 22, a ratcheting device 26 is located in an extension of the portion 23 of the computer support 12 and the portion 24 of the battery tray 10 delimiting the guide tunnel 22.

[0037] The snap-on device 26 includes a pin 27 from the battery tray 10 intended to cooperate with a housing 28 provided in the support 12. Of course, the structure can be reversed, i.e. the pin 27 can come from the support 12 while the housing 28 can be provided in the battery tray 10.

[0038] As can be seen on the figure 2 A guide channel 20 may also be provided, inside which the electrical harness 16.1 is inserted. The elongated guide channel 20 may have a U-shaped cross-section. The guide channel 20 is located under the DC / DC converter 15.

[0039] During assembly, the battery tray 10 is first mounted on the engine mount. The DC / DC converter 15 is then snapped onto a side wall of the battery tray 10. Next, the engine control unit bracket 12 is attached to a side wall of the battery tray 10 adjacent to the one on which the converter 15 is mounted. When the bracket 21 is installed, the wiring harness 16.2 is routed inside the guide tunnel 22 formed by sections 23 and 24. The guide tunnel 22 is held in place by snapping the bracket 12 to the battery tray 10 via the snap-fit ​​device 26.

[0040] The invention also relates to a motor vehicle comprising an assembly as previously described.

[0041] Alternatively, support 12 can support a vehicle computer other than the engine computer.

[0042] Alternatively, battery tray 10 can contain lithium-ion (or Li-lon), nickel-metal hydride (or Ni-Mh), nickel-cadmium (Ni-Cd), or lead-acid power cells.

Claims

1. Assembly for a motor vehicle comprising: - a battery tray (10), - a computer support (12), in particular an engine computer support, mounted on the battery tray (10), and - at least one electrical harness (16.1, 16.2), characterized in that said assembly comprises a guide tunnel (22) inside which the electrical harness (16.2) is arranged, said guide tunnel (22) being delimited on the one hand by a portion (23) of the computer support (12) and on the other hand by a portion (24) of the battery tray (10), a snap-in device (26) being located in an extension of the portion (23) of the computer support (12) and of the portion (24) of the battery tray (10) delimiting the guide tunnel (22).

2. Assembly according to claim 1, characterized in that it further comprises a DC / DC converter (15) mounted on the battery tray (10).

3. Assembly according to claim 2, characterized in that the electrical harness (16.2) comprises a first end electrically connected to the DC / DC converter (15) and a second end connected to a connection terminal (17) arranged on a stretcher (11) of the motor vehicle.

4. Assembly according to claim 3, characterized in that the terminal of connection (17) is positioned on the side of a wall of the battery tray (10) carrying the computer support (12).

5. Assembly according to one of claims 1 to 4, characterized in that the snap-fastening device (26) comprises a stud (27) originating from one of the elements among the computer support (12) and the battery tray (10) intended to cooperate with a housing (28) provided in the other of the elements among the computer support (12) and the battery tray (10).

6. Assembly according to any one of claims 1 to 5, characterized in that it further comprises a guide chute (20) inside which a second electrical harness (16.1) is inserted.

7. Assembly according to claims 2 and 6, characterized in that the chute guide (20) is arranged under the DC / DC converter (15).

8. Motor vehicle comprising an assembly as defined according to any one of the preceding claims.