Electromagnetic compatibility filter, electrical converter, vehicle and manufacturing method

Abstract

A filter includes: a first conductor, a second conductor, and a third conductor (LD-, LD +, LD0); a first capacitor (C1) connected between the first conductor (LD-) and the third conductor (LD0); a second capacitor (C2) connected between the second conductor (LD+) and the third conductor (LD0); and a third capacitor (C3) connected between the first conductor (LD +) and the second conductor (LD-). The pin (C1B) of the first capacitor (C1) is disposed higher than the pin (C2B) of the second capacitor (C2) with respect to the clamping portion (P3A) of the second conductor (LD-) along a vertical axis (Y) thereof protruding upward, such that the first clamping portion (P1B) and the second clamping portion (P2B) of the third conductor (LD0) are in opposite directions (A1, A2). A2) and the vertical axis (Y) form an angle between them of less than 80 DEG, preferably less than 70 DEG, for example 65 DEG.

Description

Technical Field

[0001] The invention relates to an electromagnetic compatibility filter, a DC-DC electrical converter comprising such a filter, a motor vehicle comprising such a converter or such a filter, and a method for producing such a filter.

[0002] The motor vehicle is, for example, a motor-driven land vehicle, a train, an aircraft, or an unmanned aircraft. The motor-driven land vehicle is, for example, a motor vehicle, a motorcycle, a motorized bicycle, or a motorized wheelchair. Background Art

[0003] The prior art discloses an electromagnetic compatibility filter, which comprises:

[0004] a first conductor;

[0005] a second conductor including a clamping portion that projects in a direction referred to as an upward direction along an axis referred to as the vertical axis;

[0006] A third conductor, the third conductor comprising:

[0007] a first clamping portion and a second clamping portion, the first clamping portion and the second clamping portion projecting along a same axis, referred to as the tilting axis, but in opposite directions, the first clamping portion and the second clamping portion being arranged higher than the clamping portion of the first conductor,

[0008] a connecting terminal disposed lower than the first clamping portion and the second clamping portion, and

[0009] an elongated body connecting the connecting terminal to the first clamping portion and the second clamping portion;

[0010] a first capacitor connected between the first conductor and the third conductor, the first capacitor comprising a pin protruding along a first axis substantially perpendicular to the vertical axis and perpendicular to the tilt axis, the pin of the first capacitor being held by a first clamping portion of the third conductor;

[0011] a second capacitor connected between the second conductor and the third conductor, the second capacitor comprising a pin protruding along a second axis substantially parallel to the first axis, the pin of the second capacitor being held by a second clamping portion of the third conductor; and

[0012] A third capacitor is connected between the first conductor and the second conductor, the third capacitor includes a pin protruding along a third axis substantially parallel to the first axis and the second axis, the pin of the third capacitor is held by the clamping portion of the first conductor, and the connection terminal of the third conductor is arranged to be lower than the pin of the third capacitor relative to the vertical axis.

[0013] During the manufacture of the filter, the clamp of the first conductor is closed onto its associated pin by means of a tool, in particular a fixing clamp having two elements designed to be positioned respectively on either side of this clamp. The clamp may be a gripping clamp, in which case the elements are designed to move towards each other so as to mechanically push the two branches of the clamp respectively so that they grip the associated pin. Alternatively or indeed additionally, the clamp may be a welding clamp, in which case the elements form electrodes for passing an electric current through the clamp to be closed and the associated pin in order to weld them together.

[0014] Therefore, in order to leave enough space for these elements, the elongated body of the third conductor must pass at a certain distance from the clamping portion, thereby increasing the overall space requirement of the filter.

[0015] Therefore, it may be desirable to provide an EMC filter that can be produced using conventional tools and has a small space requirement. Summary of the invention

[0016] Therefore, an electromagnetic compatibility filter is proposed, which includes:

[0017] a first conductor;

[0018] a second conductor including a clamping portion that projects in a direction referred to as an upward direction along an axis referred to as the vertical axis;

[0019] A third conductor, the third conductor comprising:

[0020] a first clamping portion and a second clamping portion, the first clamping portion and the second clamping portion projecting along a same axis, referred to as the tilting axis, but in opposite directions, the first clamping portion and the second clamping portion being arranged higher than the clamping portion of the first conductor,

[0021] a connecting terminal disposed lower than the first clamping portion and the second clamping portion, and

[0022] an elongated body connecting the connecting terminal to the first clamping portion and the second clamping portion;

[0023] a first capacitor connected between the first conductor and the third conductor, the first capacitor comprising a pin protruding along a first axis substantially perpendicular to the vertical axis and perpendicular to the tilt axis, the pin of the first capacitor being held by a first clamping portion of the third conductor;

[0024] a second capacitor connected between the second conductor and the third conductor, the second capacitor comprising a pin protruding along a second axis substantially parallel to the first axis, the pin of the second capacitor being held by a second clamping portion of the third conductor; and

[0025] a third capacitor connected between the first conductor and the second conductor, the third capacitor comprising a pin protruding along a third axis substantially parallel to the first axis and the second axis, the pin of the third capacitor being held by the clamping portion of the first conductor, and a connection terminal of the third conductor being disposed lower than the pin of the third capacitor relative to the vertical axis;

[0026] Characterized in that the pins of the first capacitor are arranged higher than the pins of the second capacitor relative to the vertical axis so that the tilting axis and the vertical axis form an angle between them of less than 80°, preferably less than 70°, for example 65°.

[0027] Thus, as a result of the invention, the elongated body may start at an angle at the first and second clamping portions and thus move away from the clamping portion of the third conductor in order to pass at a sufficient distance from the clamping portion of the third conductor while keeping the second capacitor close to the third capacitor.

[0028] The present invention may further include one or more of the following optional features in any technically feasible combination.

[0029] Optionally, the first clamping portion of the third conductor is higher than the second clamping portion of the third conductor.

[0030] Also optionally, the capacitors have respective housings of generally parallelepiped shape with top surfaces perpendicular to the vertical axis, the top surface of the first capacitor extending above the top surface of the second capacitor, and the top surface of the third capacitor extending below the top surface of the second capacitor.

[0031] Also optionally, the first capacitor has another pin parallel to the first pin, the second capacitor has another pin parallel to the first pin, a first plane defined by the two pins of the first capacitor and a second plane defined by the two pins of the second capacitor are substantially parallel, and the first plane extends above the second plane.

[0032] Also optionally, the elongated body has a straight end portion, the clamping portion of the third conductor protrudes substantially vertically from the straight end portion, the straight end portion extending horizontally away from the clamping portion of the first conductor and extending from the clamping portion of the third conductor along the straight end portion.

[0033] A method for manufacturing an electromagnetic compatibility filter according to the present invention is also proposed, the method comprising:

[0034] An electromagnetic compatibility filter is obtained, the electromagnetic compatibility filter comprising:

[0035] The first conductor,

[0036] a second conductor comprising a clamping portion protruding in a direction referred to as an upward direction along an axis referred to as the vertical axis,

[0037] a third conductor, the third conductor comprising: a first clamping portion and a second clamping portion, the first clamping portion and the second clamping portion protruding along the same axis referred to as the tilting axis but in opposite directions, the first clamping portion and the second clamping portion being arranged higher than the clamping portion of the first conductor; a connecting terminal, the connecting terminal being arranged lower than the first clamping portion and the second clamping portion; and an elongated body connecting the connecting terminal to the first clamping portion and the second clamping portion,

[0038] a first capacitor connected between the first conductor and the third conductor, the first capacitor comprising a pin protruding along a first axis substantially perpendicular to the vertical axis and perpendicular to the tilt axis;

[0039] a second capacitor connected between the second conductor and the third conductor, the second capacitor comprising a pin projecting along a second axis substantially parallel to the first axis;

[0040] a third capacitor connected between the first conductor and the second conductor, the third capacitor comprising a pin protruding along a third axis parallel to the first axis and the second axis, a connection terminal of the third conductor being disposed lower than the pin of the third capacitor relative to the vertical axis;

[0041] The pins of the first capacitor are arranged higher than the pins of the second capacitor relative to the vertical axis, so that the tilt axis and the vertical axis form an angle therebetween of less than 80°, preferably less than 70°, for example 65°; and

[0042] For the clamping portion of the second conductor, two elements are positioned respectively to either side of the clamping portion, one of the elements extending between the clamping portion and the elongated body of the third conductor, and the elements are used so that the clamping portion grips the pins of the third capacitor; and

[0043] For each of the first clamping portion and the second clamping portion of the third conductor, two components are positioned to either side of the clamping portion and the components are used so that the clamping portion holds the pins of the first capacitor and the pins of the second capacitor, respectively.

[0044] Optionally, using the elements includes bringing the elements closer to each other.

[0045] Also optionally, using the element includes using the element as electrodes for passing an electric current through the clamp and associated pins in order to weld them together.

[0046] A DC-DC electrical converter is also proposed, the DC-DC electrical converter comprising:

[0047] an electrical conversion circuit designed to convert a DC input voltage into a DC output voltage;

[0048] an input or output connector comprising two flat pins, one being a positive pin and the other being a negative pin, designed to receive an input voltage or supply an output voltage; and

[0049] According to the electromagnetic compatibility filter of the present invention, the first conductor and the second conductor are connected to the two pins respectively, and the third connector is connected to the electrical ground.

[0050] A motor vehicle is also proposed, which comprises an electromagnetic compatibility filter according to the invention or a DC-DC electrical converter according to the invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0051] The invention will be better understood from the following description, given by way of example only, and made with reference to the accompanying drawings, in which:

[0052] Figure 1 is a simplified illustration of a motor vehicle in which the present invention may be implemented,

[0053] Figure 2 yes Figure 1 Simplified 3D view of a DC-DC electrical converter for a motor vehicle.

[0054] Figure 3 yes Figure 2 3D view of the converter connector,

[0055] Figure 4 yes Figure 3 3D view of the connector from different perspectives and without the magnetic ring.

[0056] Figure 5 is with Figure 3 and Figure 43D view of the EMC filter associated with the connector,

[0057] Figure 6 is a 3D view of the EMC filter isolated from the connector.

[0058] Figure 7 is a view of an electromagnetic compatibility filter showing the position of the elements of the tool for fixing the clamping portion,

[0059] Figure 8 is with Figure 7 A similar view of the diagram without the vertical offset of the two capacitors,

[0060] Fig. 9 yes Figure 3 and Figure 4 A 3D view of a connector and another connector of a DC-DC electrical converter,

[0061] Fig.10 is a 3D view of another connector and associated EMC filter.

[0062] Fig.11 is demonstrated for manufacturing Fig. 9 and Fig.10 A series of three-dimensional views of successive steps of another connector method are shown. DETAILED DESCRIPTION

[0063] Now refer to Figure 1 A motor vehicle 100 is described in which the present invention may be used.

[0064] The motor vehicle 100 comprises a propulsion system 102, such as drive wheels 104 and an electric motor 106 designed to drive the drive wheels 104. The motor vehicle 100 further comprises a battery 108 designed to supply the electric motor 106 with power.

[0065] In order to charge the battery 108 at a charging station 110 connected to a power distribution network (not shown), the motor vehicle 100 further includes an electrical socket 112 designed to be connected to the charging station 110, and a DC-DC electrical converter 114 connected between the electrical socket 112 and the battery 108 so as to convert an input voltage VIN received from the charging station 110 through the electrical socket 112 into an output voltage VOUT supplied to the battery 108.

[0066] Hereinafter in the specification, the arrangement of the various elements of the converter 114 will refer to an arbitrary reference system including a left-right X-axis, an up-down Y-axis, and a front-back Z-axis.

[0067] Now refer to Figure 2Converter 114 is described in more detail.

[0068] The converter 114 first includes a housing 202, which includes a side wall 204 and a bottom 206, which together define an interior space 208 inside the housing 202 and an exterior space 210 outside the housing 202. The side wall 204 may also define a top opening 212 opposite to the bottom 206. In this case, the housing 202 may further include a cover 214 designed to close the top opening 212.

[0069] The converter 114 further includes an electrical conversion circuit 218 extending inside the interior space 208 of the housing 202. The electrical conversion circuit 218 is designed to convert the input voltage VIN into an output voltage VOUT. For example, the converter 114 can be a boost converter (boost converter or step-up converter), in which case the conversion circuit 218 includes, for example, a positive branch 220 and a negative branch 222 having an input side and an output side. The conversion circuit 218 includes an inductor L on the positive branch, and a switch Q1 and a capacitor C on the output side relative to the inductor L connected in parallel to each other between the positive branch 220 and the negative branch 222, and another switch Q2 on the positive branch between the switch Q1 and the capacitor C (for example, a diode passing toward the capacitor C (where its cathode is on one side of the capacitor C)). The converter 114 then further includes a control circuit 220, which is designed to control the switch Q to implement the conversion.

[0070] In order to receive the input voltage VIN, the converter 114 further comprises an input connector 224, which is accessible from the external space 210 so as to be connected to the external socket 112 through an electrical connection (not shown) having a connector at one of its ends that matches the input connector 224. Therefore, the input connector 224 comprises two input pins B'+, B'-: the first pin B'+ is called the positive pin, for receiving the positive potential of the input voltage VIN, and the second pin B'- is called the negative pin, for receiving the negative potential of the input voltage VIN.

[0071] In order to supply the output voltage VOUT, the converter 114 further comprises an output connector 226, which is accessible from the external space 210 so as to be connected to the battery 108 through an electrical connection (not shown) having a connector at one of its ends that matches the output connector 226. Therefore, the output connector 226 comprises two output pins B+, B-: the first pin B+ is called the positive pin, for supplying the positive potential of the output voltage VOUT, and the second pin B- is called the negative pin, for supplying the negative potential of the output voltage VOUT.

[0072] To connect the negative potentials together, the converter 114 includes a second main bus BP- (referred to as the negative main bus) connecting the negative input pin B′- and the negative output pin B- together and to the negative line 222 of the conversion circuit 218 .

[0073] Converter 114 further includes a positive input main bus BP'+ connecting the positive input pin B'+ to the input side of the positive branch 220 of the conversion circuit 218, and a first main bus BP+ called the positive output main bus connecting the positive output pin B+ to the output side of the positive branch 220 of the conversion circuit 218.

[0074] The converter 114 may further include a switch 228 for selectively connecting and disconnecting the positive main bus BP+, BP'+. This allows the conversion circuit 218 to be short-circuited so that the output voltage VOUT is equal to the input voltage VIN. This function is useful, for example, when the charging station 110 supplies an input voltage VIN that is already at a voltage required to charge the battery 108.

[0075] Now refer to Figure 3 and Figure 4 Output connector 226 is described in more detail.

[0076] refer to Figure 3 , the output pins B+, B- respectively include, for example, two flat busbars with a thickness between 1 mm and 5 mm, for example, 4 mm, each of which has a flat fixing portion B1+, B1- and a flat end portion B2+, B2-. The end portions B2+, B2- protrude toward the external space 210, for example, along the axis D (in the forward direction in the example shown), and are designed to be connected to a connector that matches the output connector 226 along this axis D. In other embodiments, the geometry of the end portions B2+, B2- can be a non-flat geometry, for example, the geometry of a rod with a circular cross-section protruding along the axis D.

[0077] The flat fixing portions B1+, B1- extend substantially parallel (e.g., within 1°) relative to each other (e.g., less than 10 mm apart, e.g., 4 mm apart). Similarly, the flat end portions B2+, B2- extend substantially parallel (e.g., within 1°) relative to each other but further apart (e.g., at least twice as far apart, e.g., between 20 mm and 30 mm apart, e.g., 25.7 mm apart) than the flat fixing portions B1+, B1-. For example, one of the output pins B+, B- (e.g., the positive output pin B+, as in the example shown) is flat, while the other of the output pins B+, B- (e.g., the negative connection pin B-, as in the example shown) has a joint 302 between the end portion B2- and the fixing portion B1-, and this joint 302 has two bends formed, for example, by bending the connection pin B- over the width of the connection pin.

[0078] The output connector 226 further includes a first electromagnetic compatibility filter. This first filter, for example, first includes a magnetic annulus 304 surrounding the output pins B+, B- and more specifically surrounding these fixed parts due to the limited space between the fixed parts B1+, B1-. The first filter further includes, for example, two capacitors C+, C-, which are respectively connected between a busbar 306 connected to an electrical ground (e.g., housing 202) and the positive output pin B+ and the negative output pin B-. For example, the positive output pin B+ includes a tab 308+ extending from the flat busbar to the capacitor C+. Similarly, the negative output pin B- may include a tab 308- extending from the flat busbar to the capacitor C-. These tabs 308+, 308- are placed between the magnetic annulus 304 and the end portions B2+, B2- of the output pins B+, B-.

[0079] refer to Figure 4 The output connector 226 further includes two auxiliary busbars BA+ and BA-. The first BA+ is called the positive auxiliary busbar and is inserted between the positive pin B+ and the positive main busbar BP+. The second BA- is called the negative auxiliary busbar and is inserted between the negative pin B- and the negative busbar BP-.

[0080] Thus, each auxiliary busbar BA+, BA- comprises a first flat portion BA1+, BA1-, respectively fixed to the positive pin B+ and the negative pin B- and more specifically to their respective fixing portions B1+, B1-. The flat portions BA1+, BA1- of the auxiliary busbars BA+, BA- are, for example, pressed against and fixed to the faces of the fixing portions B1+, B1-. For example, the fixing portions B1+, B1- have opposing faces (facing each other) and external faces on the other side of the opposing faces. Thus, the flat portions BA1+, BA1- of the auxiliary busbars BA+, BA- are, for example, pressed against and fixed to these external faces (as in the example shown).

[0081] Each auxiliary busbar BA+, BA- further comprises a second flat portion BA2+, BA2-. These second flat portions BA2+, BA2- are substantially parallel to each other (e.g. within 1°), e.g. coplanar. Depending on the orientation of the output pins B+, B- around their axis D, each portion BA2+, BA2- may extend in the continuation of the first flat portion BA1+, BA1- (in this case, the auxiliary busbars BA+, BA- are flat) or extend at a non-flat angle (as in the example shown). In the latter case, each auxiliary busbar BA+, BA- has, for example, a bend P+, P- substantially parallel to (e.g. within 1°) the axis D between the portions BA1+, BA2+ and BA1-, BA2-.

[0082] The flat parts BP2+, BP2- of the corresponding main busbars BP+, BP- are pressed against and fixed on the second parts BA2+, BA2- of the auxiliary busbars BA+, BA-, respectively. Since the second parts BA2+, BA2- extend in parallel, they can be fixed in a similar manner, in particular along the same fixing axis, regardless of the orientation of the output pins B+, B- around the axis D. In particular, when this fixing operation is performed by threaded connection (as in the example shown), the threaded connection operation can be performed along an axis perpendicular to the second parts BA2+, BA2- (vertically in the example shown). This threaded connection axis can also be used for other screws of the converter 114. Therefore, all of these threaded connection operations can be performed using the same tool, regardless of the orientation of the pins B+, B- around their axis D.

[0083] refer to Figure 5 , the converter 114 further includes a second electromagnetic compatibility filter 600 for the output connector 226 .

[0084] This electromagnetic compatibility filter 600 first includes a negative busbar LD- connected to the negative main busbar BP-. To this end, the negative busbar LD- includes, for example, a fixed terminal 602, which is fixed to the negative main busbar BP-, for example, by the same screws as the negative auxiliary busbar BA-. The electromagnetic compatibility filter 600 further includes a positive busbar LD+ connected to the positive main output busbar BP+. To this end, the busbar LD+ includes, for example, a fixed terminal 604, which is fixed to the positive main output busbar BP+, for example, by the same screws as the positive auxiliary busbar BA+. The electromagnetic compatibility filter 600 further includes a grounding busbar LD0, which is connected to an electrical ground, for example, to the housing 202. To this end, the grounding busbar LD0 includes a fixed terminal 606 fixed to the electrical ground.

[0085] The electromagnetic compatibility filter 600 further includes a capacitor C1 connected between the negative bus LD- and the ground bus LD0, a capacitor C2 connected between the positive bus LD+ and the ground bus LD0, and a capacitor C3 connected between the positive bus LD+ and the negative bus LD-. All capacitors C1, C2, C3 have respective housings of generally parallelepiped shape, for example, with horizontal top faces parallel to each other and perpendicular to the Y-axis.

[0086] refer to Figure 6 , for connection, the capacitor C1 comprises two pins C1A, C1B protruding along an axis D1A, D1B parallel to the Z axis in the example shown. Thus, the negative busbar LD- comprises a clamping portion P1A holding the pin C1A, and the ground busbar LD0 has a clamping portion P1B holding the pin C1B. The clamping portion P1B protrudes (i.e. is open) along an axis called the tilting axis and in a direction A1 along this axis.

[0087] Similarly, for connection, capacitor C2 includes two pins C2A, C2B protruding along axes D2A, D2B. Thus, positive busbar LD+ includes a clamping portion P2A holding pin C2A, and ground busbar LD0 has a clamping portion P2B holding pin C2B. Clamping portion P2B protrudes (i.e., is open) along the same axis as the axis of clamping portion P1B (e.g., within 1°) and in direction A2. Clamping portions P1B and P2B are positioned head to tail, i.e., directions A1, A2 are opposite directions.

[0088] Similarly, for connection, capacitor C3 includes two pins C3A, C3B protruding in the forward direction D3A, D3B (as in the example shown, each of the two pins can be duplicated). Therefore, the positive busbar LD+ has a clamping portion P3A holding the pin C3A. This clamping portion P3A protrudes (i.e., is open) in the upward direction A3 along the vertical Y axis. The negative busbar LD- also has a clamping portion P3B, which protrudes (i.e., is open) in the upward direction A3 along the vertical Y axis and holds the pin C3B.

[0089] The ground conductor LD0 includes an elongated body 702 extending downward from the clamping portions P1B, P2B at least as far as the pin C3A. For example, the terminal 606 of the ground conductor LD0 is arranged below this pin C3A so that the elongated body 702 passes through the side of the pin C3A and between the pins C3A and C3B.

[0090] However, reference Figure 7When manufacturing the electromagnetic compatibility filter 600, each clamping portion P1A, P1B, P2A, P2B, P3A, P3B is closed onto its associated pin C1A, C1B, C2A, C2B, C3A, C3B by a tool (in particular a fixed clamping portion having two elements 802, 804 designed to be positioned on either side of the clamping portion P1A, P1B, P2A, P2B, P3A, P3B, respectively). The fixed clamping portion may be a holding clamping portion, in which case the elements are designed to move toward each other so as to mechanically push the two branches of the clamping portion P1A, P1B, P2A, P2B, P3A, P3B so that they hold the associated pin C1A, C1B, C2A, C2B, C3A, C3B. The fixed clamp may also be an electric welding clamp, in which case elements 802, 804 additionally or alternatively form electrodes for passing current through the clamps P1A, P1B, P2A, P2B, P3A, P3B and associated pins C1A, C1B, C2A, C2B, C3A, C3B to weld them together.

[0091] Therefore, in order to leave enough space for these elements 802, 804, the elongated body of the ground strap LD0 needs to pass at a certain distance from the clamping portion P3A.

[0092] In addition, in order to make the electromagnetic compatibility filter 600 as compact as possible, it is desirable that the capacitors C1 and C2 extending above the capacitor C3 are as close as possible thereto.

[0093] In order to meet these two constraints, the capacitor C1 is positioned in such a way that its pin C1B is placed higher than the pin C2B of the second capacitor C2. Therefore, the opposite directions A1, A2 and the direction A3 together form an angle of less than 80°, preferably less than 70°, for example 65°, which allows the elongated body 702 to have a straight end portion 801 from which the clamping portions P1B, P2B protrude substantially vertically (for example within 1°) and which is vertically angled away from the clamping portion P3A. Therefore, a distance between the clamping portion P3A and the elongated body 702 sufficient for the elements 802, 804 of the tool (particularly the element 804) to pass while keeping the capacitor C2 low and close to the capacitor C3 can be maintained.

[0094] For example, capacitor C1 is positioned in such a way that its top face extends higher, ie at a greater height, than the top face of capacitor C2. For example, the height of the top face of capacitor C1 is at least 5 mm, preferably at least 10 mm higher than the height of the top face of capacitor C2.

[0095] Also by way of example, the legs of each capacitor C1, C2 define straight lines D1, D2. The two straight lines D1, D2 are substantially parallel (e.g. within 1°), with line D1 being above line D2, e.g. at least 5 mm above it, e.g. between 5 mm and 10 mm above it.

[0096] refer to Figure 8 If capacitor C1 were positioned at the same level as capacitor C2, elongated body 702 would extend too close to clamp P1B and / or clamp P3A to allow tool elements 802, 804 to pass (see area inside dashed lines).

[0097] refer to Fig. 9 and Fig.10 , the input connector 224 has elements similar to those of the output connector 226, for which the reference numerals of the previous figures are used, while adding a prime (') to distinguish them. The input pins B'+, B'- are identical to the output pins B+, B- and in particular have the same shape. The input pins B'+, B'- extend horizontally, i.e. perpendicular to the fixing (e.g. threaded connection) direction. Therefore, no compensation angle is required and the auxiliary busbars BA'+, BA'- are flat.

[0098] Additionally, the electromagnetic compatibility filter 600' is also disposed behind the input connector 224 and has similar elements to those of the electromagnetic compatibility filter 600, for which the reference numerals of the previous figures have been used, with a prime (') added to distinguish them. In particular, as before, the capacitors C1', C2' are vertically offset so that the busbar LD0' passes at a distance from the clamping portion.

[0099] Now refer to Fig.11 An example of a method for manufacturing the input connector 224 is described.

[0100] The output connector 226 is obtained in the same way.

[0101] During step E1, the negative pin B'- and, for example, the busbar 306' are obtained. These two are obtained, for example, using an overmolding 502' (for example overmolded), so that the parts B1'-, B2'- of the negative pin B'- are exposed. The overmolding 502' also has a through opening 504' in a part of the overmolding 502' overmolding the part B1'- of the negative pin B'-. In other embodiments, the overmolding 502' may be without a through opening 504'.

[0102] The magnetic annulus 304 ′ is obtained during step E2 .

[0103] During step E3 , the negative pin B′—through its fixing portion B1 ′—is inserted into the magnetic annulus 304 ′, for example until the annulus 304 ′ extends around the overmoulding 502 ′, for example around the portion of the overmoulding 302 ′ having the through opening 504 ′.

[0104] The negative auxiliary busbar BA′- is obtained during a step E4 .

[0105] During step E5, the portion BA1'- of the negative auxiliary busbar BA'- is pressed against and fixed to the fixing portion B1'- of the negative pin B'-. The fixing operation is carried out, for example, by welding, for example by electro-soldering and / or by depositing a silver link between the two portions BA1'-, B1'- to be fixed.

[0106] During step E6 , a positive branch B′+ is obtained comprising the portions B1 ′+, B2 ′+.

[0107] During step E7, the positive pin B'+ is inserted into the annulus 304' by its fixing portion B1'+, offsetting its fixing portion B1'+ from the fixing portion B1'- of the negative pin B'- (for example, offset upwards as in the example shown). In particular, as in the example shown, the positive pin B'+ is inserted into the through opening 504' of the overmolding 502' so that the annulus 304' surrounds the fixing portion B1'+ of the positive pin B'+.

[0108] The positive auxiliary busbar BA′+ is obtained during a step E8 .

[0109] During step E9, the portion BA1'+ of the positive auxiliary busbar BA'+ is pressed against and fixed to the fixing portion B1'+ of the positive pin B'+. This fixing operation is facilitated by the offset between the fixing portions B1'+, B1'- of the pins B'-, B'+, which allows access from both sides. The fixing is achieved, for example, by welding.

[0110] During step E10 , the positive pin B′+ slides down into the annular surface 304 ′ so as to position the fixing portions B1 ′+, B1 ′− opposite each other. For example, as in the example shown, the positive pin B′+ slides down into the through opening 504 ′ of the overmolding 502 ′.

[0111] Once the connector 226 is obtained by the above-mentioned method for manufacturing the connector, this connector is assembled to the two positive main bus BP+ and the negative main bus BP- of the DC-DC voltage converter 114 according to an assembly method, which includes: step F1 of obtaining the connector 226 according to the above-mentioned method for manufacturing the connector, and the step of pressing and fixing the flat part BP2+ of the positive main bus BP+ and the flat part BP2- of the negative main bus BP- against the corresponding second flat parts BA2+, BA2- of the auxiliary bus BA+, BA-.

[0112] In particular, the step of pressing and fixing the flat part BP2+ of the positive main busbar BP+ and the flat part BP2- of the negative main busbar BP- against the corresponding second parts BA2+, BA2- of the auxiliary busbars BA+, BA- includes: fixing the second parts BA2+, BA2- of the auxiliary busbars BA+, BA- to the flat parts BP2+, BP2- of the main busbars BP+, BP- by threaded connection in a threaded connection direction basically perpendicular to the second parts BA2+, BA2- of the auxiliary busbars BA+, BA-.

[0113] It should also be noted that the present invention is not limited to the embodiments described above. In fact, it will be apparent to those skilled in the art that various modifications may be made to the embodiments described above based on the teachings just disclosed to them.

[0114] In the detailed presentation of the invention given above, the terms used should not be interpreted as limiting the invention to the embodiments disclosed in this specification, but should be interpreted as including all equivalent schemes that a person skilled in the art can foresee by applying their general knowledge to implement the teachings just disclosed.

Claims

1. An electromagnetic compatibility filter (600), comprising: First conductor (LD-); a second conductor (LD+) comprising a clamping portion (P3A) protruding in a direction called upward direction (A3) along an axis called vertical axis (Y); A third conductor (LD0), the third conductor comprising: a first clamping portion (P1B) and a second clamping portion (P2B), said first clamping portion and said second clamping portion protruding along a same axis called the tilting axis but in opposite directions (A1, A2), said first clamping portion and said second clamping portion (P1B, P2B) being arranged higher than a clamping portion (P3A) of said first conductor (LD+), a connecting terminal (606) disposed lower than the first clamping portion and the second clamping portion (P1B, P2B); and an elongated body (702) connecting the connecting terminal (606) to the first clamping portion and the second clamping portion (P1B, P2B); a first capacitor (C1), the first capacitor being connected between the first conductor (LD-) and the third conductor (LD0), the first capacitor (C1) comprising a pin (C1B) protruding along a first axis (D1B) substantially perpendicular to the vertical axis (Y) and perpendicular to the tilt axis, the pin (C1B) of the first capacitor (C1) being held by a first clamping portion (P1B) of the third conductor (LD0); a second capacitor (C2), the second capacitor being connected between the second conductor (LD+) and the third conductor (LD0), the second capacitor (C2) comprising a pin (C2B) protruding along a second axis (D2B) substantially parallel to the first axis (D1B), the pin (C2B) of the second capacitor (C2) being held by a second clamping portion (P2B) of the third conductor (LD0); and a third capacitor (C3), the third capacitor being connected between the first conductor (LD+) and the second conductor (LD-), the third capacitor (C3) comprising a pin (C3A) protruding along a third axis (D3A) substantially parallel to the first axis and the second axis (D1B, D2B), the pin (C3A) of the third capacitor (C3) being held by the clamping portion (P3A) of the first conductor (LD+), and the connection terminal (606) of the third conductor (LD0) being arranged to be lower than the pin (C3A) of the third capacitor (C3) relative to the vertical axis (Y); Characterized in that the pin (C1B) of the first capacitor (C1) is arranged to be higher than the pin (C2B) of the second capacitor (C2) relative to the vertical axis (Y), so that the inclined axis and the vertical axis (Y) form an angle between them that is less than 80°, preferably less than 70°, for example 65°.

2. The electromagnetic compatibility filter (600) according to claim 1, wherein: The capacitors (C1, C2, C3) have respective housings of generally parallelepiped shape with top surfaces perpendicular to the vertical axis (Y), the top surface of the first capacitor (C1) extending above the top surface of the second capacitor (C2), and the top surface of the third capacitor (C3) extending below the top surface of the second capacitor (C2).

3. The electromagnetic compatibility filter (600) according to claim 1 or 2, wherein: The first capacitor (C1) has another pin (C1A) parallel to the first pin (C1B), wherein the second capacitor (C2) has another pin (C2A) parallel to the first pin (C2B), a first plane defined by the two pins (C1A, C1B) of the first capacitor (C1) and a second plane defined by the two pins (C2A, C2B) of the second capacitor (C2) are substantially parallel, and the first plane extends above the second plane.

4. The electromagnetic compatibility filter (600) according to any one of claims 1 to 3, wherein: The elongated body (702) has a straight end portion (801), the clamping portion (P1B, P2B) of the third conductor (LD0) protrudes substantially vertically from the straight end portion, and the straight end portion (801) extends horizontally away from the clamping portion (P3A) of the first conductor (LD+) and extends from the clamping portion (P1B, P2B) of the third conductor (LD0) along the straight end portion (801).

5. A method for manufacturing an electromagnetic compatibility filter (600) according to any one of claims 1 to 4, comprising: An electromagnetic compatibility filter (600) is obtained, the electromagnetic compatibility filter comprising: First conductor (LD-), a second conductor (LD+) comprising a clamping portion (P3A) protruding in a direction called upward direction (A3) along an axis called vertical axis (Y), a third conductor (LD0), the third conductor comprising: a first clamping portion (P1B) and a second clamping portion (P2B), the first clamping portion and the second clamping portion protruding along the same axis referred to as the tilting axis but in opposite directions (A1, A2), the first clamping portion and the second clamping portion (P1B, P2B) being arranged higher than the clamping portion (P3A) of the first conductor (LD+); a connecting terminal (606), the connecting terminal being arranged lower than the first clamping portion and the second clamping portion (P1B, P2B); and an elongated body (702), the elongated body connecting the connecting terminal (606) to the first clamping portion and the second clamping portion (P1B, P2B); a first capacitor (C1) connected between the first conductor (LD-) and the third conductor (LD0), the first capacitor (C1) comprising a pin (C1B) protruding along a first axis (D1B) substantially perpendicular to the vertical axis (Y) and perpendicular to the tilt axis; a second capacitor (C2) connected between the second conductor (LD+) and the third conductor (LD0), the second capacitor (C2) comprising a pin (C2B) protruding along a second axis (D2B) substantially parallel to the first axis (D1B); a third capacitor (C3), the third capacitor being connected between the first conductor (LD+) and the second conductor (LD-), the third capacitor (C3) comprising a pin (C3A) protruding along a third axis (D3A) parallel to the first axis and the second axis (D1B, D2B), the connection terminal (606) of the third conductor (LD0) being arranged lower than the pin (C3A) of the third capacitor (C3) relative to the vertical axis (Y); The pin (C1B) of the first capacitor (C1) is arranged higher than the pin (C2B) of the second capacitor (C2) relative to the vertical axis (Y), so that the tilting axis and the vertical axis (Y) form an angle between them of less than 80°, preferably less than 70°, for example 65°; and For the clamping portion (P3A) of the second conductor (LD+), two elements (802, 804) are positioned on either side of the clamping portion (P3A), one of the elements extending between the clamping portion (P3A) and the elongated body (702) of the third conductor (LD0), and the elements (802, 804) are used to make the clamping portion (P3A) hold the pin (C3A) of the third capacitor; and For each of the first clamping portion and the second clamping portion (P1B, P2B) of the third conductor (LD0), two elements (802, 804) are positioned to either side of the clamping portion (P1B, P2B) respectively and the elements (802, 804) are used so that the clamping portions (P1B, P2B) respectively hold the pin (C1B) of the first capacitor (C1) and the pin (C2B) of the second capacitor (C2).

6. The method according to claim 5, wherein: Using the elements (802, 804) includes moving the elements (802, 804) closer to each other.

7. The method according to claim 5 or 6, wherein: Using the components (802, 804) includes using the components (802, 804) as electrodes for passing current through the clamps (P3A, P1B, P2B) and associated pins (C3A, C1B, C2B) to weld them together.

8. A DC-DC electrical converter (114), comprising: an electrical conversion circuit (218) designed to convert a DC input voltage (VIN) into a DC output voltage (VOUT); an input or output connector (226) comprising two flat pins (B+, B-) designed to receive the input voltage (VIN) or to supply the output voltage (VOUT), one (B+) being a positive pin and the other (B-) being a negative pin; and The electromagnetic compatibility filter according to any one of claims 1 to 5, wherein the first conductor and the second conductor (LD+, LD-) are connected to the two pins (B+, B-), respectively, and wherein the third connector (LD0) is connected to electrical ground.

9. A motor vehicle comprising: An electromagnetic compatibility filter according to any one of claims 1 to 5 or a DC-DC electrical converter (114) according to claim 8.

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