METHOD FOR INSTALLING A BATTERY FOR AN ELECTRIC OR HYBRID MOTOR VEHICLE

Abstract

The invention relates to a method for installing a battery (2) of a motor vehicle (100) comprising a body (1), a battery (2) comprising a support (3), a clamp (4) and at least one pipe (5), said clamp (4) comprising a bore (6), said body comprising a wedge (7), said wedge (7) comprising a pin (8) inserted into said bore (6), characterized in that said vehicle (100) comprises a chamber (9), said pin (8) having a longitudinal axis (A), said method comprises a step of placing said chamber (9) between said clamp (4) and said support (3), said chamber (9) comprising a first volume of gas; a step of raising said battery (2); a step of inserting said pin into the bore (6); a step of perforating said chamber (9), said chamber (9) having a second volume of gas less than the first volume of gas. Figure 2

Description

Title of the invention: METHOD FOR INSTALLING A BATTERY FOR AN ELECTRIC OR HYBRID MOTOR VEHICLE

[0001] The invention relates to the assembly of an electric or hybrid motor vehicle, and in particular to the acoustic insulation between the elements constituting said vehicle, and more particularly between a clamp and a battery support.

[0002] Known from the prior art is a patent application EP1888375 which describes a retaining device for conduits transporting a fluid for a motor vehicle, otherwise known as a clamp, comprising a retaining body intended to dampen the vibrations of the conduits when said motor vehicle is in operating condition. The retaining body, entirely molded from plastic material, comprises two fixing points allowing its assembly on a body part of said motor vehicle. In addition, said retaining body comprises a plurality of elastic arms through which said conduits are inserted. Thus, when vibrations occur, the elastic arms are able to yield easily and elastically in all directions so that the forces induced by the vibrations are decoupled. The conduits are therefore acoustically insulated. However, a disadvantage remains.In fact, the ducts are protected from the vibrations caused by the vehicle, but this is not the case for the clamp. The vibrations of the clamp therefore cause an acoustic defect which could damage the clamp. In addition, this causes an unpleasant noise for the occupants of the said vehicle.

[0003] The objective of the present invention is to remedy these drawbacks by proposing a method implementing a chamber allowing acoustic insulation of said clamp.

[0004] To achieve this objective, the invention proposes a method for installing a battery of an electric or hybrid motor vehicle comprising a running gear whose points of contact with the ground define a base plane defined by a first longitudinal direction corresponding to straight-line driving, and by a second transverse direction orthogonal to the first longitudinal direction and a third vertical direction orthogonal to the first longitudinal direction and to the second transverse direction and is oriented away from the ground, said vehicle comprising a body, a battery comprising a support, a clamp and at least one pipe, said pipe being held by said clamp, said clamp comprising a bore, said body comprising a wedge, said wedge comprising a pin inserted into said bore, and said vehicle comprising a chamber, said pin having a longitudinal axis, characterized in that said method comprises the following steps: - a step of placing said chamber between said clamp and said support in the third direction, said chamber being arranged in the continuity of the axis, said chamber comprising a first volume of gas; - a step of raising said battery towards said box in the third direction; - a step of inserting said pin into the bore of said clamp; - a step of perforating said chamber by said pin causing an escape of gas from said chamber, said chamber having a second volume of gas, said second volume of gas being less than the first volume of gas.

[0005] Thanks to the invention, the vibrations between the battery holder and the clamp are reduced. Thus, the vibrations do not cause a noise disturbing the occupants of the vehicle.

[0006] Advantageously, said chamber has a spherical or ellipsoid shape, and during said perforation step, said pin perforates said chamber in its center.

[0007] Advantageously, said chamber has a substantially ellipsoid shape having two spherical parts connected by a neck, each spherical part having a first diameter and said neck having a second diameter, the second diameter being less than the first diameter, and during said perforation step, said pin perforating said neck.

[0008] Advantageously, the shim comprises a material having a first rigidity value, the body comprises a material having a second rigidity value, the first rigidity value being less than the second rigidity value.

[0009] In this way, the shim provides initial insulation between the vehicle body and the clamp when the battery is mounted.

[0010] Advantageously, said pin has a pointed end.

[0011] This shape promotes the perforation of said chamber by said pin.

[0012] Advantageously, said clamp has a parallelepiped shape.

[0013] Thus, the arrangement of said clamp is facilitated.

[0014] Preferably, said clamp has a length of between 3 cm and 7 cm and a width of between 2 cm and 5 cm.

[0015] Furthermore, the invention relates to an electric or hybrid motor vehicle, said vehicle comprising a battery, and said battery is installed by implementing the method described above.

[0016] The invention will be further detailed by the description of non-limiting embodiments, and on the basis of the appended figures illustrating variants of the invention, in which: - [Fig.l] schematically illustrates, in the form of a flowchart, a process for installing a battery in an electric or hybrid motor vehicle according to one embodiment of the invention. - [Fig.2] schematically illustrates the electric or hybrid motor vehicle during the placement stage; - [Fig.3] schematically illustrates the electric or hybrid motor vehicle during the insertion stage; - [Fig.4] schematically illustrates the electric or hybrid motor vehicle following the implementation of said method of installing a battery.

[0017] [Fig.l] schematically illustrates, in the form of a flowchart, a method for installing a battery 2 in an electric or hybrid motor vehicle 100 comprising a running gear whose points of contact with the ground define a base plane XY defined by a first longitudinal direction X corresponding to straight-line driving, and by a second transverse direction Y orthogonal to the first longitudinal direction X and a third vertical direction Z orthogonal to the first longitudinal direction X and to the second transverse direction Y and is oriented away from the ground. The vehicle 100 is schematically illustrated in Figures 2, 3 and 4 according to the progress of said method. The vehicle 100 comprises a body 1. The body 1 is a structure ensuring the rigidity of said vehicle 100 while protecting all of the elements making up said vehicle 100. A battery 2 is shown.The battery 2 is a set of electrical accumulators connected together. Each accumulator comprises electrolytes capable of transporting an electrical charge by a movement of ions between the anode and the cathode. In this way, the battery 2 stores the electrical energy in the form of chemical energy. When the electric or hybrid motor vehicle 100 is in working order, the electrical energy is restored in the form of direct current. The battery 2 comprises a support 3, allowing its assembly in the vehicle 100. A chamber 9 is positioned on said support 3 in the third direction Z. Above said chamber 9 is placed a clamp 4. Advantageously, said clamp 4 has a parallelepiped shape. Preferably, said clamp 4 has a length of between 3 cm and 7 cm and a width of between 2 cm and 5 cm. The clamp 4 is configured to hold at least one pipe 5.Preferably, the at least one pipe 5 allows the circulation of a fluid necessary for the operation of said vehicle. For example, the pipe 5 may contain coolant. The clamp 4 comprises a bore 6. The body 1 comprises a shim 7. Preferably, the shim 7 comprises a material having a first stiffness value, the body 1 comprises a material having a second stiffness value, the first stiffness value being less than the second stiffness value. The shim 7 comprises a pin 8. The pin 8 has a longitudinal structure having an axis A Ion- . gitudinal, parallel to the third vertical direction Z. Preferably, at its end, said pin 8 has a point allowing the perforation of the chamber 9, said chamber 9 being positioned in the continuity of the axis A. During a placement step E1, said chamber 9 is positioned between the clamp 4 and the support 3. The chamber 9 comprises a first volume of gas. The chamber 9 is located in the continuity of the axis A. [Fig. 2] schematically illustrates said vehicle 100 during the placement step E1. Preferably, said chamber 9 has a spherical or ellipsoidal shape. In an alternative embodiment, said chamber 9 has a substantially ellipsoidal shape having two spherical parts connected by a neck, each spherical part having a first diameter and said neck having a second diameter, the second diameter being less than the first diameter. In [Fig.2], the chamber 9 has an ellipsoid shape and the center of the chamber 9 is located in the continuity of the axis A. During a raising step E2, the battery 2 is raised so as to proceed with its assembly. Consequently, the support 3, integral with said battery 2, is raised. This causes the compression of said chamber 9 between said support 3 and said clamp 4. During an insertion step E3, the pin 8, under the effect of the raising of said battery 2 during the raising step E2, gradually penetrates into the bore 6 of said clamp 4 until said pin 8 is completely inserted into said bore 6. In [Fig. 3], the vehicle 100 is illustrated during the insertion step E3. During a perforation step E4, said pin 8 perforates the chamber 9. The perforation is facilitated when said pin 8 has a pointed end. The gas present inside said chamber 9 escapes.Consequently, during the perforation step E4, said chamber 9 comprises a second volume of gas. The second volume of gas is less than the first volume of gas. Preferably, the gas in question is air. The final configuration, after the perforation step E4, is illustrated schematically in [Fig. 4]. The chamber 9 covers the junction between said support 3 and said clamp 4. The chamber 9 then prevents the transmission of vibrations. Consequently, acoustic defects are reduced, or even eliminated. The occupants of the vehicle 100 are therefore no longer disturbed by the noise caused by the vibrations of said support 3 against said clamp 4. Furthermore, this reduces the chances of damage to said clamp 4 due to the vibrations experienced. The invention also relates to an electric or hybrid motor vehicle comprising a battery whose installation is enabled by the implementation of said method previously described.

Claims

Claims

1. Method for installing a battery (2) of an electric or hybrid motor vehicle (100) comprising a running gear whose points of contact with the ground define a base plane (XY) defined by a first longitudinal direction (X) corresponding to straight-line driving, and by a second transverse direction (Y) orthogonal to the first longitudinal direction (X) and a third vertical direction (Z) orthogonal to the first longitudinal direction (X) and to the second transverse direction (Y) and is oriented away from the ground, said vehicle (100) comprising a body (1), a battery (2) comprising a support (3), a clamp (4) and at least one pipe (5), said pipe (5) being held by said clamp (4), said clamp (4) comprising a bore (6), said body comprising a wedge (7), said wedge (7) comprising a pin (8) inserted into said bore (6),characterized in that said vehicle (100) comprises a chamber (9), said pin (8) having a longitudinal axis (A), characterized in that said method comprises the following steps: - a step (El) of placing said chamber (9) between said clamp (4) and said support (3) in the third direction (Z), said chamber (9) being arranged in the continuity of the axis (A), said chamber (9) comprising a first volume of gas; - a step (E2) of raising said battery (2) towards said body (1) in the third direction (Z); - a step (E3) of inserting said pin into the bore (6) of said clamp (4); - a step (E4) of perforating said chamber (9) by said pin (8) causing an escape of gas from said chamber (9), said chamber (9) having a second volume of gas, said second volume of gas being less than the first volume of gas.,

2. Method according to claim 1 characterized in that said chamber (9) has a spherical or ellipsoid shape, and during said perforation step (E4), said pin (8) perforates said chamber (9) in its center.

3. Method according to claim 1 characterized in that said chamber (9) has a substantially ellipsoid shape having two spherical parts connected by a neck, each spherical part having a first diameter and said neck having a second diameter, the second diameter being less than the first diameter, and during said perforation step (E4), said pin (8) perforating said neck.

4. Method according to any one of claims 1 to 3 characterized in that the shim (7) comprises a material having a first rigidity value, the body (1) comprises a material having a second rigidity value, the first rigidity value being lower than the second rigidity value.

5. Method according to any one of claims 1 to 4 characterized in that said pin (8) has a pointed end.

6. Method according to any one of claims 1 to 5 characterized in that said clamp (4) has a parallelepiped shape.

7. Method according to any one of claims 1 to 6, characterized in that said clamp (4) has a length of between 3 cm and 7 cm and a width of between 2 cm and 5 cm.

8. Electric or hybrid motor vehicle (100), said vehicle (100) comprising a battery (2), characterized in that said battery (2) is put in place by implementing the method according to any one of claims 1 to 7.

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