ELECTRIC OR HYBRID MOTOR VEHICLE COMPRISING A HIGH-VOLTAGE BATTERY COMPRISING A DISCONNECT DEVICE COMPRISING AT LEAST ONE FERROMAGNETIC ELEMENT

Abstract

The invention relates to an electric or hybrid motor vehicle comprising a battery comprising a disconnection device (100), said disconnection device (100) comprising a shaft (1), a movable part (2), a first static part (3a) and a second static part (3b), said movable part (2) comprising a first contact piece (4a) and a second contact piece (4b), said first contact piece (4a) and said second contact piece (4b) having a convex shape, said disconnection device (100) comprising a first magnet and a second magnet, said movable part (2) comprising at least one corner, characterized in that said movable part (2) comprises at least one first ferromagnetic element (7a), said first ferromagnetic element (7a) being positioned at said at least one corner. Figure 1

Description

Title of the invention: ELECTRIC OR HYBRID MOTOR VEHICLE COMPRISING A HIGH-VOLTAGE BATTERY VOLTAGE COMPRISING A DISCONNECT DEVICE COMPRISING AT LEAST ONE FERROMAGNETIC ELEMENT

[0001] The invention relates to the field of high voltage batteries for electric or hybrid motor vehicles, and more particularly to the devices for disconnecting these batteries.

[0002] Known from the prior art is a patent application JP5320226 which describes a contact device comprising a pair of fixed terminals and a movable contactor. The contact device comprises a movable shaft comprising a portion for inserting the movable contactor. Furthermore, the contact device comprises a stopper for regulating the movement of the movable contactor and a contact pressure spring urging the movable contactor towards the fixed terminals. Finally, said contact device comprises a driving means for actuating the movable contactor and movable contact pieces to contact the fixed terminals, with bent portions moving into and out of contact with the fixed terminals. Not all the bent portions are aligned on a single straight line, which allows stable contact with the fixed terminals while reducing vibration and extraneous noise. However, disadvantages remain.Indeed, the invention involves a more complex design resulting in an increase in cost and manufacturing time.

[0003] The objective of the present invention is to overcome these drawbacks and to reduce, or even eliminate, the vibrations and the noise caused by these vibrations without extending the manufacturing time of the device and without this generating excessive additional cost.

[0004] To achieve this objective, the invention proposes an electric or hybrid motor vehicle comprising a high-voltage battery and electrical components, said battery making it possible to supply said electrical components with electrical energy, said battery comprising a disconnection device capable of activating or deactivating the transmission of electrical energy between said battery and said electrical components, said disconnection device comprising a shaft, a movable part, a first static part and a second static part, said shaft being inserted perpendicularly into said movable part, said movable part comprising a first contact piece and a second contact piece, said first contact piece being po located on said first static part, said second contact piece being positioned on said second static part, said first contact piece and said second contact piece each having a convex shape, said disconnection device comprising a first magnet and a second magnet, the first magnet and the second magnet being positioned on either side of said movable part, the first magnet being separated from said movable part by a first clearance, the second magnet being separated from said movable part by a second clearance, said movable part having a substantially rectangular shape comprising at least one angle, remarkable in that said movable part comprises at least a first ferromagnetic element, said first ferromagnetic element being positioned at said at least one angle.

[0005] Thanks to the invention, the vibrations and noises caused by these vibrations are reduced, or even eliminated.

[0006] Advantageously, said movable part comprises a flat surface and a lateral edge perpendicular to said flat surface, said at least one first ferromagnetic element being positioned on said flat surface or on said lateral edge.

[0007] Advantageously, said mobile part comprises at least one separation piece to avoid contact between said at least one first ferromagnetic element and said first magnet or said second magnet.

[0008] This configuration avoids contact between said moving part and one of the magnets, thus limiting the risks of wear caused by friction.

[0009] Preferably, said at least one first ferromagnetic element is a magnet.

[0010] Advantageously, said angle has a vertex, said at least one first ferromagnetic element being positioned at the apex of said at least one angle such that said at least one first ferromagnetic element is in contact with said first magnet or said second magnet.

[0011] Advantageously, said angle has a vertex, said at least one first ferromagnetic element being positioned at a predetermined distance from said vertex so that said vertex is in contact with said first magnet or said second magnet.

[0012] Preferably, said predetermined distance is less than 2 cm.

[0013] Advantageously, said movable part comprises a second ferromagnetic element, said movable part comprising a first angle, a second angle, a third angle and a fourth angle, said first angle and said second angle being positioned opposite the first magnet, said third angle and said fourth angle being positioned opposite the second magnet, the first angle being positioned opposite the third angle, the second angle being positioned opposite the fourth angle, said first ferromagnetic element and said second ferromagnetic element being positioned respectively at the first angle and the fourth angle or respectively at the level of the second angle and the third angle.

[0014] The addition of a second ferromagnetic element makes it possible to respect the symmetry of the forces, which facilitates the actions of activation and deactivation of the transmission of electrical energy of said disconnection device.

[0015] 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 a radial section of a device for disconnecting a high-voltage battery of an electric or hybrid motor vehicle according to an embodiment of the present invention; - [Fig.2] schematically illustrates a top view of the device of connection illustrated in [Fig.l].

[0016] [Fig.l] schematically illustrates a disconnection device 100 for a high-voltage battery of an electric or hybrid motor vehicle. Furthermore, the vehicle comprises electrical components. The electrical components are elements of said vehicle whose operation requires an electrical energy supply. The electrical components are, for example, the electric motor or the passenger compartment heating system. The battery stores the electrical energy before said electrical energy is distributed to the electrical components. The disconnection device 100 is a safety device for activating or deactivating the transmission of electrical energy between said battery and the electrical components. The disconnection device 100 comprises a shaft 1 and a movable part 2. The shaft 1 is inserted perpendicularly into said movable part 2.The disconnection device 100 comprises a first static part 3a and a second static part 3b. The movable part 2 comprises a first contact piece 4a and a second contact piece 4b. The first contact piece 4a and the second contact piece 4b have a convex shape. The first contact piece 4a is in contact with said first static part 3a. The second contact piece 4b is in contact with said second static part 3b. The battery delivers a high voltage current which causes vibrations of the first contact piece 4a and the second contact piece 4b on, respectively, said first static part 3a and the second static part 3b. The vibrations have a frequency which varies between 500 Hz and 900 Hz. Such vibrations cause a noise likely to disturb the occupants of said vehicle, at the passenger compartment. In addition, said disconnection device 100 comprises a first magnet and a second magnet.For the sake of clarity, said first magnet and said second magnet are not shown in [Fig.l]. The movable part comprises at least one first ferromagnetic element 7a. Preferably, said at least one first ferromagnetic element is a magnet. The movable part 2 has a shape. substantially rectangular comprising at least one angle. The at least one first ferromagnetic element 7a is positioned at said at least one angle. Advantageously, said movable part 2 comprises a flat surface and a lateral edge which extends perpendicular to said flat surface. In this case, said at least one first ferromagnetic element 7a is positioned on said flat surface or on said lateral edge of said movable part 2.

[0017] In [Fig. 2], said disconnecting device 100 is illustrated in top view. The first magnet 5a and the second magnet 5b are shown. A first clearance remains between said first magnet 5a and said movable part 2. A second clearance remains between the second magnet 5b and said movable part 2. The first clearance and the second clearance allow the rotation of said movable part around said shaft 1 when said at least one first ferromagnetic element 7a is attracted by said first magnet 5a or said second magnet 5b. The first magnet 5a and the second magnet 5b are positioned on either side of said movable part 2. The first contact point 4a and the second contact point 4b are located behind said movable part 2. The movable part 2 has a first angle 6a, a second angle 6b, a third angle 6c and a fourth angle 6d. The moving part 2 comprises a first ferromagnetic element 7a and a second ferromagnetic element 7b.The first ferromagnetic element 7a is positioned at said first angle 6a and the second ferromagnetic element 7b is positioned at said fourth angle 6d. In an alternative embodiment, the first ferromagnetic element 7a is positioned at said second angle 6b and the second ferromagnetic element 7b is positioned at said third angle 6c. Thus, the first ferromagnetic element 7a is attracted by the first magnet 5a and the second ferromagnetic element 7b is attracted by the second magnet 5b. Preferably, said at least one angle has an apex and said at least one first ferromagnetic element 7a is located at said apex. In [Fig.2], said first ferromagnetic element 7a and said second ferromagnetic element 7b are respectively located at the apex of the first angle 6a and at the apex of the fourth angle 6d.Thus, the first ferromagnetic element 7a is in contact with said first magnet 5a and the second ferromagnetic element 7b is in contact with said second magnet 5b. As a result, the moving part 2 does not undergo premature wear due to the friction generated on said first magnet 5a and said second magnet 5b. In addition, in the event of wear, it is easier to replace said first ferromagnetic element 7a and said second ferromagnetic element 7b rather than replacing said moving part 2. In a second embodiment, not illustrated in [Fig.2], said at least one first ferromagnetic element 7a is positioned at a predetermined distance from said vertex. Thus, the electromagnetic interaction between said at least one first ferromagnetic element 7a and said first magnet 5a or said second magnet 7b allows contact. with the vertex of each angle without said at least one first ferromagnetic element being in contact with said first magnet 5a or said second magnet 5b. Preferably, said predetermined distance is less than 2 cm. The second embodiment is advantageous when said at least one first ferromagnetic element 7a is a magnet because magnets are particularly expensive and the friction of the latter with said first magnet 5a or said second magnet 5b risks damaging them by wear. Advantageously, said disconnection device 100 comprises at least one separating piece making it possible to avoid contact between said at least one first ferromagnetic element 7a and said first magnet 5a or said second magnet 5b.Indeed, said at least one separating part stabilizes the position of said moving part 2 so that the attraction between the first ferromagnetic element 7a and the first magnet 5a and the attraction between the second ferromagnetic element 7b and the second magnet 5b is balanced. Thus, the moving part 2, the first ferromagnetic element 7a and the second ferromagnetic element 7b are not in direct contact with said first magnet 5a or said second magnet 5b so as to avoid friction, and consequently wear.

Claims

Claims

1. An electric or hybrid motor vehicle comprising a high-voltage battery and electrical components, said battery enabling said electrical components to be supplied with electrical energy, said battery comprising a disconnection device (100) capable of activating or deactivating the transmission of electrical energy between said battery and said electrical components, said disconnection device (100) comprising a shaft (1), a movable part (2), a first static part (3a) and a second static part (3b), said shaft (1) being inserted perpendicularly into said movable part (2), said movable part (2) comprising a first contact piece (4a) and a second contact piece (4b), said first contact piece (4a) being positioned on said first static part (3a), said second contact piece (4b) being positioned on said second static part (3b),said first contact piece (4a) and said second contact piece (4b) each having a convex shape, said disconnecting device (100) comprising a first magnet (5a) and a second magnet (5b), the first magnet (5a) and the second magnet (5b) being positioned on either side of said movable part (2), the first magnet (5a) being separated from said movable part (2) by a first clearance, the second magnet (5b) being separated from said movable part (2) by a second clearance, said movable part (2) having a substantially rectangular shape comprising at least one angle (6a, 6b, 6c, 6d), characterized in that said movable part (2) comprises at least one first ferromagnetic element (7a), said first ferromagnetic element (7a) being positioned at said at least one angle (6a, 6b, 6c, 6d).,

2. Vehicle according to claim 1 characterized in that said movable part (2) comprises a flat surface and a lateral edge perpendicular to said flat surface, said at least one first ferromagnetic element (7a) being positioned on said flat surface or on said lateral edge.

3. Vehicle according to claim 1 or 2 characterized in that said movable part (2) comprises at least one separating piece to avoid contact between said at least one first ferromagnetic element (7a) and said first magnet (5a) or said second magnet (5b).

4. Vehicle according to any one of claims 1 to 3 characterized in that said at least one first ferromagnetic element (7a) is a magnet.

5. Vehicle according to any one of claims 1 to 4 characterized in that said angle (6a, 6b, 6c, 6d) has an apex, said at least one first ferromagnetic element (7a) being positioned at the apex of said at least one angle (6a, 6b, 6c, 6d) so that said at least one first ferromagnetic element (7a) is in contact with said first magnet (5a) or said second magnet (5b).

6. Vehicle according to any one of claims 1 to 4 characterized in that said angle (6a, 6b, 6c, 6d) has a vertex, said at least one first ferromagnetic element (7a) being positioned at a predetermined distance from said vertex so that said vertex is in contact with said first magnet (5a) or said second magnet (5b).

7. Vehicle according to claim 6 characterized in that said predetermined distance is less than 2 cm.

8. Vehicle according to any one of claims 1 to 7 characterized in that said movable part (2) comprises a second ferromagnetic element (7b), said movable part (2) comprising a first angle (6a), a second angle (6b), a third angle (6c) and a fourth angle (6d), said first angle (6a) and said second angle (6b) being positioned opposite the first magnet (5a), said third angle (6c) and said fourth angle (6d) being positioned opposite the second magnet (5b), the first angle (6a) being positioned opposite the third angle (6c), the second angle (6b) being positioned opposite the fourth angle (6d), said first ferromagnetic element (7a) and said second ferromagnetic element (7b) being positioned respectively at the first angle (6a) and the fourth angle (6d) or respectively at the second angle (6b) and the third angle (6c).

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