Electrical connector

Abstract

The invention relates to an electrical connector (903, 905) for establishing an electrical connection with a complementary electrical connector (903, 905). The electrical connector (903, 905) comprises a hollow cylindrical body (907) extending around an axis of revolution (X), an electrical contact (909) and an annular insulator (911). The annular insulator (911) and the electrical contact (909) have complementary shapes and comprise shoulders (915, 917, 919) configured to co-operate together so as to block the translation of the electrical contact (909) along the axis of revolution (X). Moreover, over the entire longitudinal extent thereof, the annular insulator (911) is in contact with a surface of the electrical contact (909) except for a portion (908) of the surface of the electrical contact (909) that is intended to be brought into contact with an electrical contact (909) complementary to the complementary electrical connector (903, 905).

Description

[0001] Description

[0002] TITLE: ELECTRICAL CONNECTOR

[0003] TECHNICAL FIELD

[0004] The invention relates to the field of electrical connection devices for transporting high electrical power in an aircraft. It relates in particular to an electrical connector intended to establish an electrical connection with a complementary electrical connector as well as an assembly comprising two complementary electrical connectors.

[0005] PRIOR ART

[0006] The state of the art includes in particular documents EP-A1-0206722, US-A- 2824290, CN-B-111133633 and FR-A1-3110781.

[0007] Current efforts to decarbonize aircraft are leading to the integration of more and more electrical systems within them. The hybridization or electrification of aircraft is part of this trend and is creating a new need for so-called high-power electrical connectors, i.e., connectors capable of withstanding high voltages and currents.

[0008] The preferred approach to achieving high power consists mainly of increasing the voltage levels within the aircraft's on-board networks, since an increase in current levels implies an increase in the cross-section of the conductors, and therefore their mass, which goes against the objectives sought for use in an aircraft.

[0009] Thus, the voltages currently envisaged for on-board aircraft networks are in the order of 800 to 1000 Volts (in direct voltage) but could eventually tend towards 3000 Volts for currents of the order of 500 Amps.

[0010] Such voltage and current values, combined with use at high altitude (e.g. 55,000 feet) and large variations in temperature (e.g. from -55°C to +250°C), pressure and humidity, lead to the occurrence of previously rare or non-existent physical phenomena. A known phenomenon associated with such operating conditions is partial discharge. This is a localized discharge, which results from temporary ionization of a gas in an electrical insulation system, and which occurs when the electrical stress (electric fields) exceeds a critical value.

[0011] This phenomenon is critical as it can lead to decreased performance and deterioration of an electrical system in which it occurs.

[0012] In the case of electrical connectors, the occurrence of partial discharges within them can damage the insulation contained in the connectors (i.e. accelerate their aging) or even, in the long term, generate the presence of a short circuit rendering the connector inoperative.

[0013] In particular, in the context of use in an aircraft, where an electrical connector undergoes significant variations in temperature and pressure (due to altitude), partial discharges can cause an insulation fault in the connector resulting in the activation of protection devices and the cutting off of the power supply to the loads of the aircraft's electrical system (motors, actuators, etc.). In the current state of the art, electrical connectors intended for aeronautical use are replaced by terminal blocks when they must be used for high powers.

[0014] In addition, existing electrical connectors are limited to operating voltages between 28 volts DC, 115 volts AC, + / - 270 volts DC and 230 volts AC. These operating voltage values ​​do not cause partial discharges at altitude.

[0015] Figure 1 shows an assembly 101 which comprises complementary electrical connectors 103 and 105 according to the state of the art. The electrical connector 103 is a base while the electrical connector 105 is a plug. In the electrical connector assemblies of the state of the art, the plug and the base can for example be held together by means of dedicated clamping means. In the state of the art, for this type of electrical connector, the element used to position and immobilize the electrical contacts is an element called a “clip cage”. Figure 2 shows, in its left part, a clip 201 which comprises three retention lips 203 used to block an electrical contact (not shown). The right part of Figure 2 shows a cage 205 of the “clip cage” type, in which 7 clips are positioned in which 7 electrical contacts of a so-called multi-way electrical connector (i.e.which has several electrical contacts). This type of electrical contact immobilization element is also used for so-called single-channel electrical connectors (i.e. which have a single electrical contact). The clip cages have a purely mechanical function of immobilizing the electrical contacts in retention chimneys (i.e. the holes in the cage in which the cages are positioned).

[0016] Insulators (such as epoxy or polyetheretherketone, also known as PEEK) can be positioned around the electrical contacts of connectors. Flexible insulators (called "grommets") can be incorporated to ensure compression and sealing of the elements of each connector. However, vacuum zones may exist within electrical connectors. These vacuum zones generate an increased risk of partial electrical discharges.

[0017] Partial discharges are particularly likely to occur in so-called "triple point" areas, where three different materials (e.g. insulation, conductor and air) meet. These areas present a significant risk of partial discharges occurring, particularly when the electrical connector in which the clip cage is mounted is used for high voltages (i.e. 1000 V).

[0018] Figure 3 shows the elements that make up a multi-way electrical connector (in this case a plug) of the male type according to an example of the state of the art. In particular, an insulating block 301 is integrated into a metal housing 303 (for example by being glued to it) and electrical contacts 305 are positioned and held in a clip cage 307 which is integrated into the insulating block 301.

[0019] As mentioned above, the use of clip cages for immobilizing electrical contacts in an electrical connector met all the requirements for use in an aircraft even at high altitude. However, when using electrical connectors at high power, high voltage, high temperature and at altitude, the risk of partial discharges occurring increases considerably.

[0020] However, even if the occurrence of partial discharges within an electrical network does not necessarily lead to an instantaneous loss of functionality of said electrical network, it does however lead to an increase in the risk of degradation of insulating materials (potentially to the point of rupture), in particular via the presence of electric arcs. Given the voltage and current levels applied in electrical connectors (for high-power use), the risk of short circuit, or even fire, is then significant.

[0021] Therefore, in a high power context, the use of clip cages has many disadvantages such as the existence of triple point zones at the level of the clip cages, the presence of vacuum zones near the electrical contacts and also the presence of bubbles, vacuoles, impurities or homogeneity defects in the parts.

[0022] For example, the presence of a cavity larger than 17 micrometers near an electrical connector is sufficient (in such a high-power context) to risk causing premature aging of the insulation.

[0023] SUMMARY OF THE INVENTION

[0024] The present invention provides a solution to these drawbacks.

[0025] Thus, one objective of the invention is to enable immobilization of the electrical contact(s) of an electrical connector, when said electrical connector is assembled, without resorting to the use of clip cages and by reducing the presence of vacuum at the interfaces between the different elements of the assembled electrical connector.

[0026] To this end, the invention according to a first aspect relates to an electrical connector intended to establish an electrical connection with a complementary electrical connector, said electrical connector comprising:

[0027] - a hollow cylindrical body extending around an axis of revolution; - at least one electrical contact positioned inside the hollow cylindrical body and extending parallel to the axis of revolution;

[0028] - at least one annular insulator, extending parallel to the axis of revolution and being positioned radially between the at least one electrical contact and the hollow cylindrical body, said electrical connector being characterized in that the at least one annular insulator and the at least one electrical contact each have at least one shoulder, said shoulders being configured to cooperate, when said electrical connector is assembled, so as to block the translation along the axis of revolution of said at least one electrical contact, and in that, over its entire longitudinal extent, the at least one annular insulator is in contact with a surface of the at least one electrical contact, with the exception of a portion of said surface of said at least one electrical contact intended to be brought into contact with a complementary electrical contact of the complementary electrical connector.

[0029] The electrical connector according to the invention may comprise one or more of the following features, taken in isolation from one another or in combination with one another:

[0030] - the electrical connector is of the socket type and the at least one electrical contact is electrically connected to a bus bar or an electrical cable, or the electrical connector is of the plug type and the at least one electrical contact is electrically connected to an electrical cable or a bus bar.

[0031] - the at least one electrical contact is of the male type and comprises a portion having a circular section with a sub-portion having a diameter greater than the rest of the portion so as to form a first shoulder.

[0032] - the at least one electrical contact is of the female type and comprises a portion having a circular section with two sub-portions of different diameters so that the junction between said two sub-portions forms a second shoulder.

[0033] - the at least one annular insulator comprises a third shoulder, at the end of said annular insulator intended to be brought into contact with the complementary electrical connector, forming a right angle, and covering the end of the at least one electrical contact.

[0034] - the hollow cylindrical body comprises clamping means configured to exert a compressive force on the at least one annular insulator and hold together said hollow cylindrical body, the at least one annular insulator and the at least one electrical contact.

[0035] - the electrical connector is a so-called high-power electrical connector configured to support a direct voltage greater than or equal to 800 Volts and a current greater than or equal to 500 Amps.

[0036] The invention according to a second aspect also relates to an assembly comprising two complementary electrical connectors according to the first aspect.

[0037] The assembly according to the invention may comprise one or more of the following characteristics, taken in isolation from one another or in combination with one another:

[0038] - the hollow cylindrical bodies of the complementary electrical connectors comprise means for clamping said complementary electrical connectors together, preferably a thread on an electrical connector and a threaded nut cooperating on the complementary electrical connector.

[0039] The invention according to a third aspect finally relates to an aircraft comprising an assembly according to the second aspect.

[0040] BRIEF DESCRIPTION OF THE DRAWINGS

[0041] The invention will be better understood with the aid of the following description, given solely by way of example and with reference to the appended drawings in which: Figure 1 is an illustration of an embodiment of an assembly comprising two electrical connectors according to the prior art; Figure 2 is a perspective view of an embodiment of clip cages used in electrical connectors according to the prior art; Figure 3 is an exploded view of an embodiment of an electrical connector according to the prior art; Figure 4 is a sectional view of an embodiment of an assembly comprising two electrical connectors, according to an example of the invention; Figure 5 is a perspective view of cylindrical hollow bodies and annular insulators of electrical connectors according to an embodiment of the invention;Figure 6 is an illustration of electrical contacts of an assembly comprising two electrical connectors according to one embodiment of the invention; Figure 7 is an illustration of electrical contacts covered with annular insulators according to one embodiment of the invention; and, Figure 8 is a side sectional view of an assembly comprising two electrical connectors assembled according to one embodiment of the invention.;

[0042] DESCRIPTION OF EMBODIMENTS

[0043] With reference to Figures 4 to 8, we will now describe an embodiment of electrical connectors according to the invention.

[0044] The example shown in these figures relates more particularly to an assembly 901 comprising two complementary electrical connectors 903 and 905 which are respectively a base, which comprises an electrical contact 909 of the female type, and a plug, which comprises an electrical contact 909 of the male type.

[0045] The term "complementary" herein means that each electrical connector is complementary to the other in the sense that it is configured to fit within the other so as to be held together (e.g., via clamping means) and establish an electrical connection.

[0046] In addition to the non-limiting example shown in these figures, in general, the invention described below applies equally well to a socket-type electrical connector as to a plug-type electrical connector, in which the electrical contact is electrically connected to a bus bar (for example by forming a single part with this bus bar; from the English "bus bar") or to an electrical cable (for example by crimping the electrical cable in the electrical contact). Similarly, the invention applies to an electrical connector, in which the electrical contact can be of the male type or the female type. For example, a male electrical contact can have a general stud shape while a female electrical contact can have a general hole shape, complementary to the shape of the stud, to allow these conductive elements to fit into each other.The electrical connectors described in the following may be, for example, so-called high-power electrical connectors (also called power connectors), that is, electrical connectors configured to withstand a direct voltage greater than or equal to 800 Volts and a current greater than or equal to 500 Amps. These may, for example, be electrical connectors used for the transport of high power in an aircraft.

[0047] The assembly 901 shown in Figure 4 comprises two connectors 903 and 905. Each electrical connector 903 or 905 is intended to establish an electrical connection with the other electrical connector 905 or 903 which is said to be complementary.

[0048] Figure 8 shows the same assembly 901 but whereas in Figure 4 the connectors 903 and 905 are separate, in Figure 8 the connectors 903 and 905 are assembled and an electrical connection is thus established.

[0049] Each 903 and 905 connector includes:

[0050] - a hollow cylindrical body 907 which extends around an axis of revolution X;

[0051] - an electrical contact 909 which is positioned inside the hollow cylindrical body 907 and which extends parallel to the axis of revolution X; and,

[0052] - an annular insulator 911, which extends parallel to the axis of revolution X and which is positioned radially between the electrical contact 909 and the hollow cylindrical body 907.

[0053] In the non-limiting example shown, each electrical connector 903 and 905 comprises a single electrical contact 909, however the invention also applies to an electrical connector which comprises a number of electrical contacts greater than or equal to 1 and one or more annular insulators surrounding these electrical contacts.

[0054] Furthermore, in the non-limiting example also shown, the hollow cylindrical body 907 of the electrical connector 903 comprises three parts 907a, 907b and 907c while the hollow cylindrical body 907 of the electrical connector 905 comprises four parts 907d, 907e, 907f and 907g.

[0055] The production of the hollow cylindrical bodies 907 in several parts (for example metal parts) facilitates their manufacture and assembly and in particular makes it possible to integrate into the hollow cylindrical body of each electrical connector clamping means configured to hold together all the parts included in the electrical connectors but also means for clamping the electrical connectors together.

[0056] Indeed, firstly, in the case of the electrical connector 903, the parts 907a, 907b and 907c constitute clamping means which are configured to exert a compressive force on the annular insulator 911 (described in more detail later) and hold together the hollow cylindrical body 907, the annular insulator 911 and the electrical contact 909.

[0057] More specifically, complementary threads present on these parts allow, during the assembly of the electrical connector 903, the screwing of the part 907b onto the part 907c and the screwing of the part 907a onto the part 907b so as to keep all the elements of the electrical connector 903 tight together while exerting pressure on the annular insulator 911.

[0058] Second, in the case of the electrical connector 905, the parts 907d, 907e, 907f and 907g also constitute clamping means which are configured to exert a compressive force on the annular insulator 911 and hold together the hollow cylindrical body 907, the annular insulator 911 and the electrical contact 909.

[0059] Here again, complementary threads present on these parts allow, during the assembly of the electrical connector, the screwing of the part 907f onto the part 907g and the screwing of the part 907e onto the part 907f so as to keep all the elements of the electrical connector 905 tight together while exerting pressure on the annular insulator 911.

[0060] Furthermore, with regard to the assembly of the two electrical connectors, as illustrated more particularly in FIG. 8, the part 907g of the hollow cylindrical body 907 of the electrical connector 905 comprises a nut whose radially internal thread cooperates with a radially external thread of the part 907c of the hollow cylindrical body 907 of the electrical connector 903 so as to hold the electrical connectors 903 and 905 together when they are assembled.

[0061] As seen in Figure 4 and Figure 8, for both electrical connectors 903 and 905, annular insulator 911 and electrical contact 909 have complementary shapes and include shoulders 915, 917 and 919.

[0062] The term "shoulder" here refers to a modification of the section of the part concerned (electrical contact or annular insulator) which implies the existence of one or more faces, which extend radially, and which serve as a support for a complementary face of the complementary part (annular insulator or electrical contact). In other words, a shoulder thus corresponds to a variation in radial section, forming a stop blocking the translational movement of a facing part.

[0063] The term "section" means the shape of the part in question cut along a plane transverse to the axis of revolution X (i.e. a cross section).

[0064] Thus, these shoulders 915, 917 and 919 are configured to cooperate, when the electrical connectors 903 or 905 are assembled (i.e. when the different parts included in a connector are assembled to form said connector), so as to block the translation along the axis of revolution X of the electrical contact 909. In the non-limiting example shown, the electrical contact 909 of the electrical connector 905 is a male type electrical contact. This is electrically connected to an electrical cable 921 (in this case by crimping the electrical cable 921 in the electrical contact 909).

[0065] Furthermore, as can be seen in more detail in the left part of Figure 6, the electrical contact 909 of the electrical connector 905 comprises a portion with a circular section which has a sub-portion with a diameter greater than the rest of the portion and which thus forms the shoulder 919.

[0066] This shoulder 919 has two faces which extend radially on which complementary faces of the annular insulator 911 bear. Consequently, once the electrical connector 905 is assembled, the translation of the electrical contact 909 of the electrical connector 905 along the axis of revolution X is prevented, in both directions.

[0067] In the non-limiting example shown, the electrical contact 909 of the electrical connector 903 is a female-type electrical contact which is electrically connected to a bus bar 923 (in this case by forming only one piece therewith).

[0068] Furthermore, as can be seen in more detail in Figure 6, the electrical contact 909 of the electrical connector 903 comprises a portion with a circular section which has two sub-portions of different diameters so that the junction between the two sub-portions forms a shoulder 915 which blocks the translation along the axis of revolution X, in one direction, of the electrical contact 909.

[0069] In addition, the annular insulator 911 of the electrical connector 903 comprises a second shoulder 917, at its end intended to be placed in contact with the other electrical connector (i.e. the electrical connector 905), which is a right angle, and which covers the end of the electrical contact 909. Consequently, this second shoulder 917 blocks the translation along the axis of revolution X, in the other direction, of the electrical contact 909.

[0070] Thus, the existence of the shoulders 915 and 917 results in the blocking of the translation of the electrical contact 909 of the electrical connector 903 along the axis of revolution X, and this, in both directions.

[0071] Furthermore, as mentioned above, the invention also applies to multi-way electrical connectors, i.e. comprising a plurality of electrical contacts. In this case, the different electrical contacts are parallel to each other and to the axis of revolution X. Consequently, the translation along the axis of revolution X here designates a translation along the direction of this axis, i.e. parallel to it without the element concerned (i.e. the electrical contact) necessarily being positioned on the axis itself.

[0072] Furthermore, in the non-limiting example shown, the electrical contacts 909 comprise elements for electrical protection of an operator (for example conforming to the IP2X index), such as the pad 925 positioned in the center of the female electrical contact 909 of the electrical connector 903 and the ring 917, the shape of which is complementary to that of the pad 915, positioned at the end of the male electrical contact 909 of the electrical connector 905.

[0073] Finally, in the non-limiting example shown, the female electrical contact 909 of the electrical connector 903 comprises a continuity ring 929 designed to have high conductivity and high temperature resistance. This may be, for example, a strip made of beryllium copper with a layer of nickel and gold.

[0074] In addition to the characteristics of the annular insulators 911 and the electrical contacts 909 described above, as can be seen in FIGS. 4 and 8, for each electrical connector 903 or 905, the annular insulator 911 is in contact, over its entire longitudinal extent, with the surface of the electrical contact 909, with the exception of the portion 908 of the surface of the electrical contact 909 which is intended to be placed in contact with the electrical contact 909 of the other electrical connector 905 or 903.

[0075] In other words, over its entire longitudinal extent, the annular insulator 911 covers the electrical contact 909 without leaving a gap between the two elements except for the area of ​​the electrical contact 909 which is in contact with the other electrical contact 909 when the electrical connectors 903 and 905 are assembled. Thus, for each electrical connector, to the extent that the annular insulator 911 is in contact on its radially inner surface with the electrical contact 909 and on its radially outer surface with the hollow cylindrical body 907, the electrical contact 909 is also radially immobilized when the electrical connector is assembled.

[0076] Furthermore, as illustrated in particular in FIG. 5 and FIG. 7, in the non-limiting example shown, each electrical connector 903 and 905 comprises a first annular insulator 911a made of a first material and a second annular insulator 911b made of a second material. The first and second annular insulators 911a and 911b are positioned one behind the other along the axis of revolution X, and fitted into one another, around the electrical contact 909. By way of example, the first material may be a material having greater elasticity than the second material which is rigid.Thus, the rigidity of the second material allows good maintenance of the electrical contact 909 while the elasticity of the first material allows compression of said first material when the electrical connector is assembled, in particular under the effect of the clamping means of the hollow cylindrical body 907, so that the elements of the electrical connectors 903 and 905 are well maintained under pressure on each other.

[0077] Advantageously, the risk of the presence of a void at the junction between the elements of the electrical connector can thus be reduced. Furthermore, thanks to the elasticity of the second material, the vibrations to which the electrical connector may be subjected (for example in the case of use in an aircraft) can be absorbed.

[0078] Furthermore, in the non-limiting example shown, as can be seen in FIG. 4, the second material is also used in the production of a seal 931 positioned at the interface between the annular insulator 911 and the hollow cylindrical body 907, in the electrical connector 903. This seal thus also has the function of preventing the presence of a vacuum within the electrical connector.

[0079] In the non-limiting example still shown, the second annular insulator 911b itself comprises two separate parts 911ba and 911bb which are configured to fit into one another and cover the at least one electrical contact 909.

[0080] Dividing the annular insulators into several pieces facilitates their manufacture and positioning during the assembly of the electrical connector, in particular by allowing pieces of the annular insulator to be positioned on either side of a shoulder before tightening the assembly.

[0081] Furthermore, for each annular insulator, the person skilled in the art will be able to adapt the shape and number of these parts to facilitate the manufacture and assembly of an electrical connector, in particular depending on the desired shape for the electrical contact and the hollow cylindrical body. Finally, as illustrated more particularly in Figure 8, with regard to the assembly 901, once the two electrical connectors 903 and 905 are assembled, the empty spaces are limited between the elements of the assembly.

[0082] In particular, for each electrical connector, the at least one electrical contact and the at least one annular insulator may be configured so that, when the two complementary electrical connectors are assembled, over the entire longitudinal extent of the electrical contacts, said assembly substantially presents, radially, a continuum of material from the electrical contact to the hollow cylindrical body. In other words, perpendicular to the axis of the longitudinal extent of the assembled connectors, from the electrical contacts to the hollow cylindrical bodies, the presence of voids is minimized.

[0083] In conclusion, the invention described has numerous advantages, including the absence of the need to use clip cages for immobilizing electrical contacts and consequently the elimination of empty areas associated with said clip cages.

[0084] The use of complementary shapes for the different elements, the manufacture and assembly of which are simple and the compression of which in the assembled electrical connector further reduces the possible presence of voids.

[0085] The absence of the use of glue in the proposed electrical contact immobilization device.

[0086] Consequently, the potential occurrence of partial discharge linked in particular to the presence of vacuum and / or the existence of triple point is considerably reduced thanks to the invention.

[0087] In addition, the reduction of vacuum zones improves the heat dissipation of the assembly and the absence of glue allows the assembly to withstand high temperatures (for example around 260°C) without suffering deterioration.

[0088] Finally, the invention makes it possible to improve the sealing and compactness of an electrical connection device.

[0089] Finally, thanks to these advantages, the entire invention can be used in an extreme environment (high temperatures, high altitudes up to 55,000 feet, high or low pressure, etc.), such as that to which an aircraft is exposed, without risking deterioration or reductions in performance.

Claims

CLAIMS [1] Electrical connector (903, 905) for establishing an electrical connection with a complementary electrical connector (903, 905), said electrical connector (903, 905) comprising: - a hollow cylindrical body (907) extending around an axis of revolution (X); - at least one electrical contact (909) positioned inside the hollow cylindrical body (907) and extending parallel to the axis of revolution (X); - at least one annular insulator (911), extending parallel to the axis of revolution (X) and being positioned radially between the at least one electrical contact (909) and the hollow cylindrical body (907), said electrical connector (903, 905) being characterized in that the at least one annular insulator (911) and the at least one electrical contact (909) each have at least one shoulder (915, 917, 919), said shoulders being configured to cooperate, when said electrical connector (903, 905) is assembled, so as to block the translation along the axis of revolution (X) of said at least one electrical contact (909), in that the at least one annular insulator (911) is in contact, over its entire longitudinal extent, with a surface of the at least one electrical contact (909), with the exception of a portion (908) of said surface of said at least one electrical contact (909) intended to be brought into contact with an electrical contact (909) complementary to the electrical connector (903,905) complementary, and in that the hollow cylindrical body (907) comprises clamping means configured to exert a compressive force on the at least one annular insulator (911) and hold together said hollow cylindrical body (907), the at least one annular insulator (911) and the at least one electrical contact (909)., [2] An electrical connector (903, 905) according to claim 1, said electrical connector (903, 905) being of the socket type and the at least one electrical contact (909) being electrically connected to a bus bar (923) or to an electrical cable (921), or said electrical connector (903, 905) being of the plug type and the at least one electrical contact (909) being electrically connected to the electrical cable (921) or to the bus bar (923). bus (923). [3] Electrical connector (903, 905) according to any one of claims 1 or 2, wherein the at least one electrical contact (909) is of the male type and comprises a portion having a circular section with a sub-portion having a diameter greater than the rest of the portion so as to form a first shoulder (919). [4] Electrical connector (903, 905) according to any one of claims 1 or 2, wherein the at least one electrical contact (909) is of the female type and comprises a portion having a circular section with two sub-portions of different diameters so that a junction between said two sub-portions forms a second shoulder (915). [5] Electrical connector (903, 905) according to claim 4, wherein the at least one annular insulator (911) comprises a third shoulder (917), at the end of said annular insulator (911) intended to be brought into contact with the complementary electrical connector (903, 905), said third shoulder (917) forming a right angle covering the end of the at least one electrical contact (909). [6] Electrical connector (903, 905) according to any one of claims 1 to 5, said electrical connector (903, 905) being a so-called high power electrical connector (903, 905) configured to support a direct voltage greater than or equal to 800 Volts and a current greater than or equal to 500 Amps. [7] Assembly (901) comprising two complementary electrical connectors (903, 905) according to any one of claims 1 to 6. [8] An assembly (901) according to claim 7, wherein the hollow cylindrical bodies (907) of the complementary electrical connectors (903, 905) comprise means for clamping said complementary electrical connectors (903, 905) together, preferably a thread on an electrical connector (903) and a threaded nut cooperating on the complementary electrical connector (905). [9] An aircraft comprising at least one set of electrical connectors according to any one of claims 7 or 8.

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