FR3044841A1 - ELECTRICAL CONNECTOR FOR CONNECTING ELECTRICALLY TO AT LEAST ONE ELECTRONIC UNIT AND TO AN ELECTRIC POWER SOURCE - Google Patents

Abstract

The subject of the invention is an electrical connector (10) intended to be electrically connected to at least one electronic unit and to a source of electrical energy, the electrical connector comprising: at least one first power trace (12a) for be electrically connected to a pole of positive polarity (B +) of the source of electrical energy, and - at least a second trace of power (12b) to be electrically connected to a pole of negative polarity (B-) of the source of electrical energy, wherein the at least first and second power traces (12a, 12b) are overmolded at least in part electrically insulating material, and wherein the at least first and second power traces (12a, 12b) ) are at least partially superposed and separated by an insulating material (16).

Description

The invention relates to an electrical connector intended to be electrically connected to at least one electronic unit and to a source of electrical energy. The invention also relates to an assembly comprising a capacitance block connector and an electrical connector according to the invention, as well as an electronic architecture comprising said assembly. In addition, the invention also relates to an electrical machine comprising such an electronic architecture.

Usually, an electronic architecture for powering an electrical machine comprises electronic units, such as electronic power modules, coupled with capacitance blocks. The electronic units are, in general, placed at a distance from the capacitance blocks so as to allow efficient heat dissipation of the heat generated by the electronic modules and the capacitance blocks. However, the coupling of the electronic units and the capacitance blocks induces a parasitic inductance which can disturb the operation of the electronic architecture.

The present invention aims to overcome this disadvantage by proposing an electrical connector to reduce the parasitic inductance generated within the electronic architecture. For this purpose, the subject of the invention is an electrical connector intended to be electrically connected to at least one electronic unit and to a source of electrical energy, the electrical connector comprising: at least one first trace of power intended to be connected electrically to a pole of positive polarity of the source of electrical energy, and - at least a second trace of power to be electrically connected to a pole of negative polarity of the source of electrical energy, wherein the at least a first and second power traces are overmolded at least in part electrically insulating material, and wherein the at least first and second power traces are at least partially superimposed and separated by an insulating material.

Advantageously, the superposition of power traces separated by an insulating material makes it possible to create a capacitance and to generate a mutual inductance, which makes it possible to reduce the parasitic inductance generated within the electronic architecture that comprises said electrical connector.

In addition, the capacity resulting from the superposition of the power traces separated by an insulating material makes it possible to absorb the overvoltages and under-voltages of the electronic architecture, and thus to protect the electronic units intended to be connected to the electrical connector.

The electrical connector according to the invention may also comprise one or more of the following characteristics, considered individually or according to all the possible combinations: the thickness of the insulating material is less than or equal to 2 mm, in particular equal to 1 mm; and / or - the at least first and second power traces each comprise at least one terminal, in particular an outgrowth outside the superposition of said power traces, intended to be electrically connected to the at least one electronic unit. The invention also relates to an assembly for supplying an electrical machine, comprising: - an electrical connector according to the invention, and - a capacity block connector comprising: • at least a third power trace intended to be electrically connected to a pole of positive polarity of the source of electrical energy, and • at least a fourth trace of power to be electrically connected to a pole of negative polarity of the source of electrical energy, and wherein the at least one third and fourth power traces are overmolded at least in part electrically insulating material, and wherein the electrical connector and the capacitance connector are intended to be electrically connected to provide power to the at least one electronic unit.

Advantageously, such a set makes it possible to optimize the operation of the electronic architecture to which it is integrated.

In addition, the coupling of the electrical connector and the capacitance block connector makes it possible to reduce the electromagnetic disturbances and thus to improve the electromagnetic compatibility of the assembly according to the invention.

According to one embodiment of the invention, the capacity block connector may comprise at least one link capacity.

In addition, the capacity block connector may comprise a magnetic core, in particular for measuring a current flowing in the capacitance block connector.

Another object of the invention relates to an electronic architecture for powering an electrical machine, comprising: at least one electronic unit, and an assembly of a capacity block connector and an electrical connector according to the invention, in which the assembly is intended to provide power to the at least one electronic unit, in particular to power the electric machine.

Advantageously, such an electronic architecture has lower production costs compared to the prior art, in particular by reducing the production costs of the electronic units. Indeed, the absorption of the overvoltages and undervoltage of the electrical machine by the electrical connector allows the production of electronic power units less sensitive to voltage changes, and thus to reduce the manufacturing cost of these electronic units.

According to one embodiment of the invention, the at least one electronic unit may comprise at least one electronic power module. The invention also relates to an electric machine for a motor vehicle, comprising an electronic architecture according to the invention. For example, the electric machine is a starter, an alternator-starter or another machine embedded in the vehicle. Other features and advantages of the present invention will appear on reading the following description and figures: FIG. 1a is a general view of an electrical connector according to one embodiment of the invention, FIG. of power without overmoulding of the electrical connector of FIG. 1a, FIGS. 2a and 2b show sectional views of the electrical connector of FIG. 1a according to one embodiment of the invention, FIG. 3 is a view according to an embodiment of a set of an electrical connector and a capacity block connector according to the invention, FIG. 4 shows the power traces without overmoulding of the capacitor block connector of FIG. 3, FIG. 5 is an exploded view. according to one embodiment of an electronic architecture according to the invention, FIG. 6 is a sectional view according to an embodiment of an electronic architecture assembly of Figure 5 according to the invention, and Figure 7 is an exploded view of an electric machine according to one embodiment of the invention.

It should be noted that these drawings have no other purpose than to illustrate the text of the description and do not constitute in any way a limitation of the scope of the invention.

In the various figures, the analogous elements are designated by identical references. The subject of the invention is an electrical connector intended to be electrically connected to at least one electronic unit and to a source of electrical energy.

In the following description, the electronic unit will be illustrated by an electronic power unit, for example an electronic power unit comprising a plurality of electronic power modules, here three in number.

The electrical connector is preferably intended to be integrated in an electronic architecture for powering an electric machine, particularly an electric machine for a motor vehicle, such as a rotating electrical machine. An electronic power module is in particular intended to supply power to the electric machine from a source of electrical energy.

In particular, FIG. 1a shows an electrical connector 10 according to the invention.

As illustrated in FIG. 1a, the electrical connector 10 has the general shape of a horseshoe making it possible to house a brush holder of the electric machine in the hollow of the electrical connector 10. The brush holder comprises at least two brushes made of material electrically conductive and is intended to allow the power supply of a rotor of the electric machine.

In particular, the electrical connector 10 preferably has a substantially flat shape comprising an upper face 20 and a lower face 22.

In addition, the electrical connector 10 comprises at least a first power trace 12a and at least a second power trace 12b, particularly visible in Figure 1b. Preferably, said power traces 12a, 12b are included in the plane of the electrical connector 10. The first power trace 12a is in particular intended to be electrically connected to a pole of positive polarity B + of the electric power source, and the second power trace is in particular intended to be electrically connected to a pole of negative polarity B 'or to the ground of the source of electrical energy. In addition, the source of electrical energy may be a source of continuous electrical energy, the term continues here meaning that the electrical energy is constant over time.

The first and second power tracks 12a, 12b are distinct from each other and overmolded at least in part electrically insulating material. For example, a portion of the overmolding 14 of the power traces is visible in Figure 1a, and the power traces 12a, 12b shown without overmolding are visible in Figure 1b.

As shown in FIG. 2a, the first and second power traces 12a, 12b are at least partially superimposed. The traces of power 12a, 12b are thus superimposed in a direction substantially perpendicular to the plane of the electrical connector 10. In other words, the power traces 12a, 12b are at least partly arranged one above the other in the substantially flat shape of the electrical connector.

The first and second power traces 12a, 12b are separated by an insulating material 16, generally an electrically insulating material such as for example a plastic material, in particular visible in FIG. 2a. Preferably, the thickness of the insulating material 16 separating the superposition of two portions of traces of power is greater than or equal to 50 microns and less than or equal to 2 mm, in particular equal to 1 mm. The first and second power traces 12a, 12b are advantageously superimposed as close as possible to one another, so as to reduce the parasitic inductance.

Advantageously, the first and second power traces 12a, 12b each comprise at least one terminal intended to be electrically connected to an electronic unit, for example to an electronic power module and / or to a capacitance block connector, such as detailed thereafter. In particular, each terminal is intended to supply energy to an electronic unit from the source of electrical energy.

Each terminal is preferably located in the plane of the electrical connector, and is made accessible through a window in the electrically insulating material. In other words, a terminal is at least partially free of overmolding 14 so that an electrical contact can be made between said terminal and an electronic unit.

In particular, each terminal forms an outgrowth 18a, 18b, in particular visible in FIG. 1b, external to the superposition of said power traces 12a, 12b. For example, in FIG. 1b, the power trace 12a comprises five protuberances 18a and the power trace 12b comprises eight protuberances 18b. In particular, three protuberances 18a are intended to be electrically connected to an electronic unit and two protuberances 18a are intended to be electrically connected to a capacitance block connector. Likewise, six protuberances 18b are intended to be electrically connected to an electronic unit and two protuberances 18b are intended to be electrically connected to the capacitance block connector. In addition, two protuberances 18b of the power trace 12b are visible in FIGS. 2a and 2b, the protuberances 18b being devoid of overmoulding at the upper face 20 and the lower face 22 of the electrical connector 10.

Advantageously, the first and second power tracks 12a, 12b are totally superimposed except at the level of the excrescences of each power trace 12a, 12b so as to allow an electrical connection between the electrical connector and an electronic unit, while maximizing the superimposed surface of power traces.

In addition, the electrical connector also comprises at least one trace of power 12c, in particular visible in FIG. 2, intended to be electrically connected to at least one of the electrical elements, for example a phase, of the electrical machine and to an electronic unit. . For example, the electrical connector 10 of Figure 1a is intended to be connected to three electronic power modules, and comprises three pairs of power traces 12c, in particular visible in Figure 1b. Each pair of power traces 12c allows an electrical connection between an electronic unit and a phase of the electric machine.

Advantageously, each power trace 12c comprises at least one terminal, as described above, intended to be electrically connected to an electronic unit. For example, as illustrated in FIG. 1b, the electrical connector 10 comprises six power traces 12c, each power trace 12c comprising a terminal 18c.

In addition, the electrical connector 10 advantageously comprises at least one wall 32 extending from the substantially flat shape of the electrical connector 10 in a direction substantially perpendicular to the plane of the electrical connector 10. More specifically, a wall 32 as shown in FIG. 1a, is formed by at least a portion of a power trace 12c overmolded at least in part electrically insulating material. In other words, as visible in FIG. 1b, each power trace 12c forms a bend between the plane of the electrical connector and a plane substantially perpendicular to said plane of the electrical connector.

In particular, the power traces 12c, in particular the portions of the power traces 12c forming the walls 32, are intended to be screwed to the electrical machine powered by the electronic architecture in which the connector is intended to be integrated.

Each trace of power 12c comprises an excrescence 34 devoid of overmolding 14, in particular in a direction substantially perpendicular to the plane of the electrical connector. These protuberances 34 allow in particular an electrical contact with each trace of power 12c in a direction substantially perpendicular to the plane of the electrical connector.

Preferably, as shown in Figure 1b, each protrusion 34 is located at one end of a power trace 12c.

Advantageously, the walls 32 are located on the periphery of the substantially flat shape of the electrical connector, and the walls 32 extend from the upper face 20 of the electrical connector, as shown in Figure 1a.

According to one embodiment of the invention compatible with the embodiment previously described, the electrical connector 10 may also be intended to be electrically connected to at least one other electronic unit, subsequently illustrated by an electronic control unit, by example an electronic control card.

Advantageously, the electrical connector 10 is arranged between the two electronic units, here an electronic control board and electronic power modules, so that the electrical connector and said electronic units are superimposed along an axis substantially perpendicular to the plane of the electrical connector. In particular, the electronic units may be substantially flat in shape and extend substantially in planes parallel to the plane of the electrical connector. For example, the upper face of the electrical connector may be arranged vis-à-vis the electronic control board, and the underside of the electrical connector may be arranged vis-à-vis the electronic power modules.

The first and second power traces 12a, 12b may also be intended to be electrically connected to the electronic control board, so as to supply electrical energy to said electronic control board.

More specifically, as shown in FIG. 1b, the first and second power traces 12a, 12b as described above may each comprise at least one pin 24a, 24b, also called a pin, intended to be electrically connected to an electronic unit, in particular to the electronic control card. The lugs 24a, 24b preferably extend from the plane of the electrical connector 10 in the direction of the electronic unit. For example, in Figure 1a, the lugs 24a, 24b extend perpendicularly from the upper face 20 of the electrical connector 10. In particular, the lug 24a, 24b is metal.

Advantageously, the lug 24a, 24b of each of the first and second power tracks 12a, 12b is respectively located at an edge of said at least a first and second power traces 12a, 12b, as shown in Figure 1b.

In addition, the lug 24a of the first power trace 12a may be adjacent to the lug 24b of the second power trace 12b, to facilitate connection with the electronic unit. For example, in FIG. 1a, the substantially flat shape of the electrical connector is substantially symmetrical about a plane perpendicular to the plane of the electrical connector, and the lugs 24a, 24b are adjacent and situated on or on either side of the plane. of symmetry of the electrical connector 10. Preferably, as represented in FIG. 2b, the overmoulding 14 of the first and second power traces 12a, 12b mechanically connects the lug 24a of the first power trace 12a and the lug 24b of the second 12b power trace.

The electrical connector 10 may also comprise a seal 26, in particular visible in FIGS. 1a and 2b, extending between the electronic unit and the electrical connector 10 and around each lug 24a, 24b, making it possible to guarantee the seal between the electrical connector 10 and the electronic unit at the lugs. In particular, the electronic unit being intended to be insulated with an insulating material, this seal 26 also makes it possible to prevent the insulating material from flowing around the lugs 24a, 24b.

In addition, the electronic units are intended to be electrically connected via at least one electrical connection element. In particular, the substantially flat shape of the electrical connector 10 comprises at least one through orifice 28 intended to receive the at least one electrical connection element.

Preferably, the through orifice 28 comprises at least one side wall 30 extending from the substantially flat portion of the electrical connector 10.

According to one embodiment of the invention, the through orifice 28 has a general cylinder shape, the side wall 30 extending in a direction substantially perpendicular to the plane of the electrical connector 10, in particular in the direction of an electronic card. For example, in Figure 1a, the side wall 30 extends perpendicularly from the upper face 22 of the electrical connector 10 towards the electronic control board.

Alternatively, the through hole may have a general cone shape, the side wall extending in a direction inclined relative to the plane of the electrical connector.

Advantageously, the side wall 30 makes it possible to mechanically protect the electrical connection elements.

Advantageously, the side wall 30 comprises at least a portion of the periphery of the through-orifice 28, as illustrated in FIG. 1a. The side wall preferably has a height greater than or equal to 1 mm and less than or equal to 10 mm, in particular equal to 6 mm and a thickness less than or equal to 3 mm and greater than or equal to 0.5 mm.

The electrical connector 10 may comprise a plurality of through-holes 28, three in number in FIG. 1a, each through-orifice 28 being intended to receive at least one electrical connection element. The invention also relates to an assembly comprising an electrical connector 10 as described above and a capacity block connector 100. The assembly according to the invention, illustrated in FIG. 3, is intended to power an electric machine.

The electrical connector 10 and the capacitance block connector 100 are preferably arranged between the electronic units, so that the assembly and said electronic units are superimposed.

The electrical connector 10 and the capacitance block connector 100 are intended to be electrically connected to provide power to at least one electronic unit.

The capacity block connector 100 may have a general horseshoe shape. In particular, as illustrated in Figure 3, the assembly of the capacity block connector 100 and the electrical connector 10 forms the periphery of an orifice for receiving the brush holder of the electric machine.

The capacitance block connector 100 comprises at least a third power trace 102a and at least a fourth power trace 102b, particularly visible in FIG. 4. The third power trace 102a is in particular intended to be electrically connected to a pole of positive polarity B + of the source of electrical energy, and the fourth power trace 102b is intended in particular to be electrically connected to a pole of negative polarity B 'or to the mass of the source of electrical energy, the source of energy electric being a source of continuous electrical energy. The third and fourth power traces 102a, 102b are distinct from each other and overmolded at least in part electrically insulating material, for example plastic material. For example, the power tracks 102a, 102b shown without overmoulding are visible in FIG. 4, and a part of the overmoulding 104 of the power traces 102a, 102b is visible in FIG.

In a similar manner to the first and second power traces 12a, 12b, the third and fourth power traces 102a, 102b are preferably at least partially superimposed and separated by an insulating material 106, in particular visible in FIG. precisely, the power traces 102a, 120b are at least partially arranged one above the other within the capacitance block connector 100. For example, as shown in FIG. 4, at least a portion of the third and fourth power traces 102a, 102b are superimposed in a direction substantially perpendicular to the plane of the electrical connector 10. In particular, a portion of the third power trace 102a is intended to be vis-à-vis the fourth trace of power 102b and electronic unit board, and a portion of the fourth power trace 102b is intended to be vis-à-vis the third trace of power and a m electronic power module. The third and fourth power traces 102a, 102b are advantageously superimposed as close as possible to one another, so as to reduce the parasitic inductance generated by the superposition of the third and fourth power traces 102a, 102b.

Preferably, the third and fourth power traces 102a, 102b may each comprise at least one terminal intended to be electrically connected to the electronic unit and to the electrical connector 10 so as to supply power to said electronic unit. A terminal is preferably free of over-molding 104 so that electrical contact can be made between said terminal and the electronic unit. In particular, a terminal forms a protrusion external to the superposition of said power traces 102a, 102b. As illustrated in FIG. 4, the power trace 102b comprises four terminals 108b and the power trace 102a comprises two terminals 108a.

Advantageously, as shown in FIG. 3, a terminal 108a of the third power trace of the capacitance block connector 100 and a terminal of the first power trace of the electrical connector 10 are electrically connected, and a terminal 108b of the fourth trace the power of the capacity block connector 100 and a terminal of the second power trace of the electrical connector 10 are electrically connected.

In addition, the capacity block connector 100 may comprise at least one link capacity 110. For example, as illustrated in FIG. 3, the capacity block connector 100 comprises two capacity blocks 114, each capacity block 114 comprising three link capacities 110.

Additionally, the capacity block connector 100 may comprise a magnetic core 112, visible in FIGS. 3 and 4, for measuring an electric current. The invention also relates to an electronic architecture for powering an electric machine.

In particular, FIGS. 5 and 6 respectively represent an exploded view and a sectional view of an embodiment of such an electronic architecture 200. The electronic architecture 200 comprises at least one electronic unit, in this example three electronic modules. 202, and a set of an electrical connector 10 and a capacitance block connector 100 as previously described. The assembly is intended in particular to provide power to the electronic unit.

Advantageously, the architecture also comprises a support 204 of the electronic modules, an electronic control card 206, and a support 208 of the electronic card. The electrical connector 10 and the capacitance block connector are preferably arranged between the electronic power modules 202 and the support 208 of the electronic card.

The control electronic card 206 is notably configured to control the components of the power electronic modules 202. In particular, the electronic card 206 is intended to be electrically connected to each power electronic module 202 via at least one electrical connection element 210.

An electronic power module 202 preferably comprises a planar substrate comprising three power traces overmolded at least in part electrically insulating material, preferably plastic material. Each power trace of the electronic module 202 comprises at least one portion devoid of overmolding, in particular intended to be electrically connected to the electrical connector 10. More specifically, the electrical connection of the power electronic module 202 with the electrical connector 10 is effected via an element. external connection. The outer connection element may comprise a tongue of folded conductive material, in particular in the form of a "Z", so as to comprise at least one lower plane face in contact with a part of the power trace of the electronic module 202 which is and an upper planar face in contact with a terminal of a power trace of the electrical connector 10.

The support 204 of the power electronic modules is advantageously a housing comprising at least one open cavity 212 having a bottom on which the power electronic modules 202 are mounted. In particular, as illustrated in FIG. 5, the open cavity 212 can receive three electronic power modules 202.

In addition, the open cavity 212 is intended to be filled with an insulating material A, in particular visible in FIG. 6, so that the power electronic modules 202 are embedded in the insulating material A. In particular, this configuration makes it possible to For example, the insulating material A may be a resin, such as an epoxy resin, or an insulating gel, such as a silicone gel. Advantageously, the power module support 204 is a heat sink, also called heat sink.

The support 208 of the electronic control board is arranged between the power electronic modules 202 and the electronic control board 206. The support 208 of the electronic control board is preferably made of insulating material, for example molded plastic. The support 208 comprises an open cavity 214 having a bottom on which the electronic card 206 is intended to be received.

The support 208 also comprises at least one hollow column 216, in particular visible in FIG. 6, in which the electrical connection elements 210 of the electronic card 206 with the electronic modules 202 are inserted. In particular, the hollow column 216 is inserted into the through hole 28 of the electrical connector 10 so that the electrical connection elements 210 electrically connect the electronic card 206 and the electronic modules 202.

The hollow column 216 extends from the open cavity 214 and is configured to communicate with the open cavity 214 at a first end 218 of the hollow column 216. In particular, in FIG. 5, the support 208 of the electronic card 206 comprises three hollow columns, each hollow column being intended to receive the electrical connection elements 210 of each electronic module 202 with the electronic control board 206. The open cavity 214 is intended to be filled with an insulating material B so that the card The control electronics 206 is embedded in the insulating material B. The electronic control board 206 is thus effectively isolated.

In particular, the electronic control board 206 and the power electronic modules 202 may be insulated with identical or different insulating materials A, B, preferably an identical insulating material, in particular an insulating gel.

Preferably, as illustrated in FIG. 6, a second end 222 of the hollow column 216 is in contact with the insulating material A in which the electronic module 202 is embedded. This configuration makes it possible to guarantee the filling of the hollow column 216 of insulating material, and thus to ensure effective isolation of the electrical connection elements 210. The interface between the insulating material A of the power electronic module 202 and the insulating material B of the electronic control card 206 is in particular located inside the hollow column 216, near the second end 222 of the hollow column 216.

In addition, the space between the electronic card 206 and the power module 202 and surrounding the hollow column 216 is devoid of material, in particular of insulating material. In particular, the electrical connector 10 is arranged in this free space of material, as shown in FIG. 6. The free space of material has, among other things, the effect of leaving a free space for air circulation, thus allowing convection cooling. In addition, this configuration makes it possible to reduce the production costs of the electronic architecture 200, thanks in particular to a gain in insulating material.

In addition, the bottom of the open cavity 214 advantageously comprises guide elements 228 of the at least one electrical connection element 210, particularly visible in FIG. 6, arranged at the first end 218 of the hollow column 216 and intended to guide the at least one electrical connection element 210 to the electronic card 206.

In addition, the invention also relates to an electric machine for a motor vehicle comprising an electronic architecture 200 according to the invention. In particular, such an electric machine is shown in FIG.

The electric machine 300 comprises a housing 302 and a shaft 304 of the machine rotor. The shaft 304 of the rotor of the electrical machine 300 is intended to be electrically connected to the brushes of the brush holder of the electric machine housed in the hollow of the horseshoe shape of the electrical connector 10. The electronic architecture 200 is particularly intended to be mounted on the housing 302 of the electrical machine 300. In particular, the electronic architecture 200 is intended to be screwed to the housing 302 of the electrical machine 300. The electronic architecture for powering an electric machine has been described in FIG. the frame of a plurality of electronic power modules and an electronic board for controlling said electronic power modules. Of course, the invention is not limited to the embodiment described and illustrated, which has been given by way of example. On the contrary, other applications of the electrical connector according to the invention are also possible without departing from the scope of the invention.

Claims (9)

An electrical connector (10) for electrically connecting to at least one electronic unit and a source of electrical power, the electrical connector comprising: - at least a first power trace (12a) for electrically connecting to a positive polarity pole (B +) of the electric power source, and - at least one second power trace (12b) intended to be electrically connected to a pole of negative polarity (B ') of the electric power source, wherein the at least first and second power traces (12a, 12b) are overmolded at least in part electrically insulating material, and wherein the at least first and second power traces (12a, 12b) are at least partially part superimposed and separated by an insulating material (16). 2. Electrical connector according to claim 1, wherein the thickness of the insulating material (16) is less than or equal to 2 mm, in particular equal to 1 mm. 3. Electrical connector according to claim 1 or 2, wherein the at least a first and second power traces (12a, 12b) each comprise at least one terminal (18a, 18b), in particular a protrusion outside the superposition of said traces of power, intended to be electrically connected to the at least one electronic unit. An assembly for powering an electrical machine, comprising: - an electrical connector (10) according to any of claims 1 to 3, and - a capacitance block connector (100) comprising: • at least a third trace of power (102a) to be electrically connected to a pole of positive polarity (B +) of the electric power source, and • at least a fourth power trace (102b) to be electrically connected to a pole of negative polarity ( B ') of the electric power source, and wherein the at least third and fourth power traces (102a, 102b) are overmolded at least in part electrically insulating material, and wherein the electrical connector (10) and the capacitance block connector (100) is intended to be electrically connected to provide power to the at least one electronic unit. An assembly according to claim 4, wherein the capacitance block connector (100) comprises at least one link capacitor (110). The assembly of claim 4 or 5, wherein the capacitance block connector (100) comprises a magnetic core (112). An electronic architecture (200) for powering an electrical machine, comprising: at least one electronic unit (202), and an assembly according to any of claims 4 to 6, wherein the assembly is for providing the power to the at least one electronic unit (202, 206). 8. The electronic architecture of claim 7, wherein the at least one electronic unit comprises at least one electronic power module (202). Electric machine for a motor vehicle, comprising an electronic architecture (200) according to claim 7 or 8.