ELECTRIC OR HYBRID MOTOR VEHICLE WITH A HIGH-VOLTAGE BATTERY HAVING A DISCONNECTIVITY DEVICE WITH AT LEAST ONE FERROMAGNETIC ELEMENT

Abstract

The invention relates to an electric or hybrid motor vehicle comprising a battery with a disconnect device (100), said disconnect device (100) comprising a shaft (1), a moving part (2), a first static part (3a) and a second static part (3b), said moving 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 disconnect device (100) comprising a first magnet and a second magnet, said moving part (2) comprising at least one angle, characterized in that said moving part (2) comprises at least one first ferromagnetic element (7a), said first ferromagnetic element (7a) being positioned at said at least one angle. Figure 1

Description

Title of the invention: ELECTRIC OR HYBRID MOTOR VEHICLE WITH A HIGH-VOLTAGE BATTERY VOLTAGE COMPRISING A DISCONNECTING 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 devices for disconnecting these batteries.

[0002] Prior art patent application JP5320226 is known, describing a contact device comprising a pair of fixed terminals and a movable contactor. The contact device includes a movable shaft comprising a portion for inserting the movable contactor. Furthermore, the contact device includes a stop for regulating the movement of the movable contactor and a contact pressure spring pushing the movable contactor towards the fixed terminals. Finally, the contact device includes a drive means for actuating the movable contactor and movable contact parts for making contact with the fixed terminals, with bent portions moving into and out of contact with the fixed terminals. Not all the bent portions are aligned on the same straight line, which allows stable contact with the fixed terminals while reducing vibration and extraneous noise. However, some disadvantages remain.Indeed, the invention involves a more complex design, resulting in increased manufacturing cost and time.

[0003] The objective of the present invention is to remedy these drawbacks and to reduce, or even eliminate, the vibrations and noise caused by these vibrations without increasing the manufacturing time of the device and without incurring excessive additional costs.

[0004] To achieve this objective, the invention proposes an electric or hybrid motor vehicle comprising a high-voltage battery and electrical components, said battery supplying electrical energy to said electrical components, said battery comprising a disconnect device capable of activating or deactivating the transmission of electrical energy between said battery and said electrical components, said disconnect device comprising a shaft, a moving part, a first static part and a second static part, said shaft being inserted perpendicularly into said moving part, said moving part comprising a first contact piece and a second contact piece, said first contact piece being po positioned 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 moving part, the first magnet being separated from said moving part by a first set, the second magnet being separated from said moving part by a second set, said moving part having a substantially rectangular shape comprising at least one angle, remarkable in that said moving part comprises at least one first ferromagnetic element, said first ferromagnetic element being positioned at said at least one angle.

[0005] Thanks to the invention, the vibrations and the noise 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 a first ferromagnetic element being positioned on said flat surface or on said lateral edge.

[0007] Advantageously, said moving part comprising at least one separating 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 so 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 moving part comprises a second ferromagnetic element, said moving 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 in electrical energy of said disconnection device.

[0015] The invention will be further detailed by describing non-limiting embodiments, and based on the accompanying figures illustrating variants of the invention, in which: - [Fig.l] schematically illustrates a radial section of a high-voltage battery disconnection device 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 connection illustrated in [Fig.l].

[0016] Figure 1 schematically illustrates a disconnect device 100 for a high-voltage battery of an electric or hybrid motor vehicle. The vehicle also includes electrical components. These electrical components are elements of the vehicle whose operation requires a supply of electrical energy. Examples of electrical components include the electric motor or the passenger compartment heating system. The battery stores electrical energy before it is distributed to the electrical components. The disconnect device 100 is a safety device for enabling or disabling the transmission of electrical energy between the battery and the electrical components. The disconnect device 100 comprises a shaft 1 and a movable part 2. The shaft 1 is inserted perpendicularly into the movable part 2.The disconnect device 100 comprises a first static part 3a and a second static part 3b. The moving 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 the first static part 3a. The second contact piece 4b is in contact with the second static part 3b. The battery delivers a high-voltage current that causes vibrations of the first contact piece 4a and the second contact piece 4b on, respectively, the first static part 3a and the second static part 3b. The vibrations have a frequency that varies between 500 Hz and 900 Hz. Such vibrations cause noise that could disturb the occupants of the vehicle inside the passenger compartment. In addition, the disconnect device 100 comprises a first magnet and a second magnet.For clarity, the first and second magnets are not shown in [Fig. 1]. The moving part comprises at least one first ferromagnetic element 7a. Preferably, this at least first ferromagnetic element is a magnet. The moving part 2 has a shape. substantially rectangular having at least one corner. The at least first ferromagnetic element 7a is positioned at said at least one corner. Advantageously, said movable part 2 has a flat surface and a lateral edge extending perpendicularly to said flat surface. In this case, said at least first ferromagnetic element 7a is positioned on said flat surface or on said lateral edge of said movable part 2.

[0017] In [Fig. 2], the disconnecting device 100 is shown in a top view. The first magnet 5a and the second magnet 5b are shown. A first clearance exists between the first magnet 5a and the moving part 2. A second clearance exists between the second magnet 5b and the moving part 2. The first and second clearances allow the moving part to rotate around the shaft 1 when at least one ferromagnetic element 7a is attracted by the first magnet 5a or the second magnet 5b. The first magnet 5a and the second magnet 5b are positioned on either side of the moving part 2. The first contact point 4a and the second contact point 4b are located behind the moving part 2. The moving 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 the first angle 6a, and the second ferromagnetic element 7b is positioned at the fourth angle 6d. In an alternative embodiment, the first ferromagnetic element 7a is positioned at the second angle 6b, and the second ferromagnetic element 7b is positioned at the third angle 6c. Thus, the first ferromagnetic element 7a is attracted to the first magnet 5a, and the second ferromagnetic element 7b is attracted to the second magnet 5b. Preferably, at least one angle has a vertex, and at least one first ferromagnetic element 7a is located at that vertex. In [Fig. 2], the first ferromagnetic element 7a and the second ferromagnetic element 7b are located at the vertex of the first angle 6a and the vertex of the fourth angle 6d, respectively.Thus, the first ferromagnetic element 7a is in contact with the first magnet 5a, and the second ferromagnetic element 7b is in contact with the second magnet 5b. Consequently, the moving part 2 does not suffer premature wear due to friction generated on the first magnet 5a and the second magnet 5b. Furthermore, in the event of wear, it is easier to replace the first ferromagnetic element 7a and the second ferromagnetic element 7b than to replace the moving part 2. In a second embodiment, not illustrated in [Fig. 2], the at least one first ferromagnetic element 7a is positioned at a predetermined distance from the vertex. Thus, the electromagnetic interaction between the at least one first ferromagnetic element 7a and the first magnet 5a or the second magnet 7b enables contact. with the vertex of each angle without the at least first ferromagnetic element being in contact with the first magnet 5a or the second magnet 5b. Preferably, the predetermined distance is less than 2 cm. The second embodiment is advantageous when the at least first ferromagnetic element 7a is a magnet, since magnets are particularly expensive and friction between them and the first magnet 5a or the second magnet 5b risks damaging them through wear. Advantageously, the disconnecting device 100 includes at least one separating piece to prevent contact between the at least first ferromagnetic element 7a and the first magnet 5a or the second magnet 5b.Indeed, at least one separating piece stabilizes the position of the moving part 2 so that the attraction between the first ferromagnetic element 7a and the first magnet 5a is balanced, as is the attraction between the second ferromagnetic element 7b and the second magnet 5b. Thus, the moving part 2, the first ferromagnetic element 7a, and the second ferromagnetic element 7b are not in direct contact with the first magnet 5a or the second magnet 5b, thereby preventing friction and, consequently, wear.

Claims

Demands

1. Electric or hybrid motor vehicle comprising a high-voltage battery and electrical components, said battery supplying electrical energy to said electrical components, said battery comprising a disconnect device (100) capable of activating or deactivating the transmission of electrical energy between said battery and said electrical components, said disconnect device (100) comprising a shaft (1), a moving part (2), a first static part (3a) and a second static part (3b), said shaft (1) being inserted perpendicularly into said moving part (2), said moving 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 moving part (2), the first magnet (5a) being separated from said moving part (2) by a first gap, the second magnet (5b) being separated from said moving part (2) by a second gap, said moving part (2) having a substantially rectangular shape comprising at least one angle (6a, 6b, 6c, 6d), characterized in that said moving 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 a 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 moving part (2) comprising 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. A vehicle according to any one of claims 1 to 3 characterized in that said at least a 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 a vertex, said at least one first ferromagnetic element (7a) being positioned at the vertex 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 moving part (2) comprises a second ferromagnetic element (7b), said moving 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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