Electronic cut-off protection equipment with heat sink

Abstract

Electronic cut-off protection device with heat sink. The invention relates to an electronic cut-off protection device comprising: a housing (1), a phase current line (P) between a first phase connection terminal (2) and a second phase connection terminal (3), the first / second phase connection terminal (2, 3) comprising a conductive part (4) including a contact portion (5), an electronic cut-off unit (6) including at least one electronic power cut-off component (7), a heat sink (8), characterized in that: - the conductive part (4) of the first phase connection terminal (2) is extended by a phase conductive portion (9) forming on the one hand a first part of the phase current line (P) and on the other hand a heat sink (8), the conductive part (4) and the phase conductive portion (9) forming a single-piece conductive part (10),- the phase-conducting portion (9) being electrically and thermally connected to said electronic switching unit (6) so as to dissipate the heat from said at least one electronic power switching component (7) by thermal conduction and to conduct the current from said electronic switching unit (6) and / or to said electronic switching unit (6). Figure to be published with the abbreviation: Fig. 3,

Description

Title of the invention: Electronic cut-off protection device with heat sink

[0001] The invention relates to the field of electronically cut-off protection devices with a heat sink.

[0002] Electronic switching protection devices with a heat sink are known, for example, from publication WO2022106527A1 or publication WO22243456A1. In these documents, in particular, there is talk of finding a solution for efficiently dissipating the heat released by the electronic power switching components, of the power transistor type.

[0003] More specifically, in document WO2022106527A1, it is proposed to position the electronic switching unit in the housing opposite the rear side panel, which is made of metallic material and preferably includes a heat sink, for example, with a plurality of fins. This configuration optimizes the dissipation of Joule losses, optimizes thermal conduction between the electronic power switching components and a DIN rail, and optimizes thermal convection with the ambient air. However, this solution requires modifying the material of the rear side panel of the housing, which is usually plastic, and therefore affects the material of the housing.

[0004] More specifically, in document WO22243456A1, it is proposed to house the switching block containing the power switches of a phase line between several conductive plates and the walls of the device housing. This has the advantage of allowing the dissipation of thermal energy and thus reducing the number of semiconductor switching components. This document further discloses that the thermal energy released by the switches is dissipated outwards from the device by conduction along the phase conductors. For example, the thermal energy is mainly dissipated by conduction and radiation from the conductive parts outwards from the device.For the dissipation of thermal energy by conduction, the entire phase current path within the circuit breaker is involved; that is, all electrical conductors, power cables, and electrical conduction lines that allow the phase current to flow from upstream to downstream of the device. However, in this solution, the power cables or electrical braids used on the phase electrical conduction lines do not have optimal thermal conduction properties and, moreover, involve tedious and meticulous assembly operations, particularly with the conductive plates. This... The document does not indicate how the interface between the connection terminals and the conductive plates is achieved and appears to require tedious assembly operations which degrade the performance in thermal extraction by conduction.

[0005] The present invention aims to overcome at least one of these drawbacks and seeks to offer an alternative solution to the prior art known having a limited impact on the material of the housing and making it easier to assemble the electronically cut-off protective equipment and thus to optimize the overall impedance of the protective equipment.

[0006] To this end, the invention relates to an electronically controlled protective device comprising at least:

[0007] - a casing,

[0008] - a phase current line between a first phase connection terminal and a second phase connection terminal, the first / second phase connection terminal comprising a conductive part including at least one contact portion configured to come into contact with a power supply conductor of the network or a load,

[0009] - an electronic switching unit comprising at least one electronic component power cutoff device located on said phase current line

[0010] - an electronic protective trigger comprising at least one unit of control coupled to said electronic cut-off unit configured to control the opening of said at least one electronic power cut-off component in the event of a fault,

[0011] - at least one heat sink made of conductive material,

[0012] The electronically controlled protective device is characterized in that:

[0013] - the conductive part of the first phase connection terminal is extended by a phase-conducting portion forming on the one hand a first part of the phase current line and on the other hand a heat sink, the conductive part and the phase-conducting portion forming a single-piece conductive part,

[0014] - the phase-conducting portion being electrically and thermally connected to said electronic switching unit so as to dissipate the heat from said at least one electronic power switching component at least by thermal conduction and to conduct the current from said electronic switching unit and / or to said electronic switching unit.

[0015] The invention will be better understood from the following description, which relates to several preferred embodiments, given by way of non-limiting examples, and explained with reference to the accompanying schematic drawings, in which:

[0016] [Fig-1] [Fig.1] represents a partial perspective view of an apparatus of electronic cut-off protection according to the invention in a first mode of re- lisation,

[0017] [Fig.2] [Fig.2] represents a partial front view of the electronic cut-off protection device according to the invention in the first embodiment illustrated in [Fig.1],

[0018] [Fig.3] [Fig.3] represents a perspective, exploded and partial view of the electronic cut-off protection device according to the invention in the first embodiment,

[0019] [Fig.4] [Fig.4] represents a perspective and exploded view of the one-piece conductive part and the electronic switching unit of the electronically switching protective equipment according to the invention in the first embodiment,

[0020] [Fig. 5] [Fig. 5] represents a partial perspective view of an electronically controlled protective device according to the invention in a second embodiment

[0021] [Fig.6] [Fig.6] shows a partial, exploded perspective view of the electronically controlled cut-off protective device according to the invention in the second embodiment illustrated in [Fig.5], and

[0022] [Fig.7] [Fig.7] represents a perspective and exploded view of the one-piece conductive part and the electronic switching unit of the electronic switching protection equipment according to the invention in the second embodiment.

[0023] An electronically controlled protective device comprises at least:

[0024] - a housing 1,

[0025] - a phase P current line between a first phase connection terminal 2 and a second phase connection terminal 3, the first / second phase connection terminal 2, 3 comprising a conductive part 4 comprising at least a contact portion 5 configured to come into contact with a power supply conductor of the network or of a load,

[0026] - an electronic switching unit 6 comprising at least one electronic component power cut-off electronics 7 disposed on said phase P power line,

[0027] - an electronic protection trip unit comprising at least one unit of control coupled to said electronic cut-off unit 6 configured to control the opening of said at least one electronic power cut-off component 7 in the event of a fault occurring,

[0028] - at least one heat sink 8 made of conductive material.

[0029] In accordance with the invention, the electronically controlled protection device is characterized in that:

[0030] - the conductive part 4 of the first phase 2 connection terminal is extended by a phase conductive portion 9 forming on the one hand a first part of the phase P current line and on the other hand a heat sink 8, the conductive part 4 and the phase conductive portion 9 forming a single-piece conductive part 10,

[0031] - the phase 9 conductive portion being electrically and thermally connected to said electronic switching unit 6 so as to dissipate the heat from said at least one electronic power switching component 7 by thermal conduction and to conduct the current from said electronic switching unit 6 and / or to said electronic switching unit 6.

[0032] Advantageously, the conductive part 4 of the first phase 2 connection terminal incorporates a phase conductive portion 9 which is electrically and thermally interfaced with the electronic switching unit 6 comprising said at least one electronic power switching component 7 of the phase P current line. No connection by means of electrical cable or electrical braid is used to connect the first phase 2 connection terminal to the heat sink 8 formed by the phase conductive portion 9. The conductive part 4 and the phase conductive portion 9 are in fact in the form of a single-piece conductive part 10.This results in a reduction in the number of parts and therefore a simplification of the assembly operations of the electronically disconnected protective equipment, as well as an improvement in thermal conduction along the phase P current line and a limitation of the number of electrical junctions between the constituent parts of the phase P current line and consequently an optimization of the overall impedance of the protective equipment.

[0033] It should be noted that the conductive portion of phase 9 can allow the flow of electric current in the direction from the second phase 3 connection terminal to the first phase 2 connection terminal or in the direction from the first phase 2 connection terminal to the second phase 3 connection terminal.

[0034] It should also be noted that the phase conductive portion 9 allows the heat from said at least one electronic power cutoff component 7 to be dissipated to the first phase connection terminal 2 by thermal conduction. In summary, in this configuration according to the invention, heat dissipation is achieved at least by thermal conduction in the one-piece conductive part 10 to the first phase connection terminal 2.

[0035] Preferably, the phase conductive portion 9 is electrically and thermally connected to said electronic switching unit 6 without conductive braid or conductive cable.

[0036] Advantageously, the thermal conduction of heat from said unit of The electronic disconnection 6 to the phase conductive portion 9 is achieved without an intermediary and is therefore improved. The assembly operations of the electronically disconnected protective equipment are also simplified, and the overall impedance of the protective equipment is further improved.

[0037] Preferably, according to a possibility not illustrated, the phase conductive portion 9 is electrically and thermally connected to said electronic switching unit 6 by forming at least one direct electrical and thermal contact with said at least one electronic power switching component 7.

[0038] This configuration makes it possible to minimize the thermal resistance between the electronic power cut-off component 7 and the phase conductive portion 9.

[0039] For example in this case, if the electronic power cut-off component 7 includes a heat sink element then the latter will be in direct contact with the phase conductive portion 9 to thus form a direct electrical and thermal contact.

[0040] Preferably and as illustrated in particular by figures 3, 4, 6 and 7, the phase conductive portion 9 is electrically and thermally connected to said electronic switching unit 6 without direct electrical and thermal contact with said at least one electronic power switching component 7.

[0041] Advantageously, this preferred configuration has the advantage of not requiring direct contact between the phase conductive portion 9 and said at least one electronic power cut-off component 7, resulting in greater design freedom for the electronic cut-off unit 6, since the phase conductive portion 9 does not necessarily have to be in the immediate vicinity of the electronic power cut-off component 7. In addition, this configuration allows the use of electronic power cut-off components 7 which include a heat sink element configured to be towards the second face 14 of the electronic board 12 for electrical connection thereto.

[0042] For example, in this case, if the electronic power cut-off component 7 includes a heat sink element, then the latter will not be in direct contact with the phase conductive portion 9, thus forming an indirect electrical and thermal contact; on the contrary, the phase conductive portion 9 will be electrically and thermally connected to the electronic power cut-off component 7 via an intercalated element preferably forming part of said electronic cut-off unit 6, connected on one side to the phase conductive portion 9 and on the other side to the electronic power cut-off component 7.

[0043] Preferably, and as illustrated in the figures, said electronic switching unit 6 comprises at least one electronic board 12 comprising a first face 13 and a second face 14 opposite the first face 13, and said electronic switching unit 6 comprises a first set 1E1 of at least one electronic component of power cut-off 7 on said phase P current line mounted on the first face 13 or the second face 14 and a second assembly E2 of at least one electronic power cut-off component 7 on said phase P current line mounted on the first face 13 or the second face 14 and electrically connected in head-to-tail with said at least one electronic power cut-off component 7 of the first assembly El.

[0044] Advantageously, thanks to this arrangement of the present invention it is possible to place said at least one electronic power cut-off component 7 of the first set E1 and said at least one electronic power cut-off component 7 of the second set E2 either on the same face 13, 14 of the electronic board 12 (figures 1 to 4), or on the opposite faces 13, 14 of the electronic board 12 (figures 5 to 7).

[0045] Preferably and as shown in particular in Figures 3, 4, 6 and 7, said at least one electronic power cut-off component 7 of the first assembly El is mounted on the second face 14 and includes a dissipative element oriented against the second face 14, the phase conductive portion 9 has a contact interface 15 which is disposed opposite the first face 13, against it and aligned with said at least one electronic power cut-off component 7 of the first assembly El and is electrically and thermally connected to the electronic board 12 without direct electrical and thermal contact with said at least one electronic power cut-off component 7 of the first assembly El.

[0046] Advantageously, in this configuration it is not necessary for the phase conductive portion 9 to be mounted on the same side of the electronic board 12 as said at least one electronic power cut-off component 7 of the first set El to establish the electrical and thermal connection between the phase conductive portion 9 and said at least one electronic power cut-off component 7 of the first set El.

[0047] Preferably and as shown in particular in figures 1 to 4, said at least one electronic power cut-off component 7 of the second assembly E2 is mounted on the second face 14 adjacent to said at least one electronic power cut-off component 7 of the first assembly El and includes a heat sinking element oriented against the second face 14.

[0048] Advantageously, in this case said at least one electronic power cut-off component 7 of the first set E1 and said at least one electronic power cut-off component 7 of the second set E2 are mounted on the same face, namely the second face 14.

[0049] Preferably, and as shown in particular in Figures 5 to 7, the electronically disconnected protective device comprises an additional phase-conducting plate mentary 11 forming on the one hand a second part of the phase P current line and on the other hand a heat sink 8, the additional phase conductive plate 11 being electrically and thermally connected to said electronic switching unit 6 so as to dissipate the heat from said at least one electronic power switching component 7 of the second assembly E2 at least by thermal conduction and to conduct the current to said electronic switching unit 6 from the second phase connection terminal 3, if the phase conductive portion 9 is electrically connected to said electronic switching unit 6 so as to conduct the current from said electronic switching unit 6.

[0050] In this configuration, the electronically disconnecting protective equipment is configured to allow the flow of electric current in the direction from the second phase 3 connection terminal to the first phase 2 connection terminal via the additional phase conductive plate 11 which is configured to conduct the electric current from the second phase 3 connection terminal to the electronic disconnect unit 6 and via the phase conductive portion 9 which is configured to conduct the electric current from the electronic disconnect unit 6 to the conductive part 4 of the first phase 2 connection terminal.Furthermore, the phase conductive portion 9 allows heat from at least one electronic power cut-off component 7 of the first assembly E1 to be dissipated by thermal conduction to the first phase 2 connection terminal, and the additional phase conductive plate 11 allows heat from at least one electronic power cut-off component 7 of the second assembly E2 to be dissipated by thermal conduction to the second phase 3 connection terminal. In summary, in this configuration, heat is dissipated by thermal conduction in the single-piece conductive portion 10 to the first phase 2 connection terminal and in the additional phase conductive plate 11 to the second phase 3 connection terminal.Furthermore, it is not necessary for the additional phase conductive plate 11 to be mounted on the same side of the electronic board 12 as said at least one electronic power cut-off component 7 of the second assembly E2 in order to establish the electrical and thermal connection between the additional phase conductive plate 11 and said at least one electronic power cut-off component 7 of the second assembly E2.

[0051] Alternatively, the electronically disconnected protection device comprises an additional phase conductive plate 11 forming on the one hand a second part of the phase current line P and on the other hand a heat sink 8, the additional phase conductive plate 11 being electrically and thermally connected in particular to said electronic switching unit 6 so as to dissipate the heat from said at least one electronic power switching component 7 of the second assembly E2 at least by thermal conduction and to conduct the current from said electronic switching unit 6, if the phase conductive portion 9 is electrically connected to said electronic switching unit 6 so as to conduct the current from the first phase connection terminal 2.

[0052] In this alternative and unrepresented configuration, the electronically interrupting protection equipment is configured to allow the flow of electric current in the direction from the first phase 2 connection terminal to the second phase 3 connection terminal via the phase conductive portion 9 which is configured to conduct the electric current from the conductive part 4 of the first phase 2 connection terminal to the electronic interrupting unit 6 and via the additional phase conductive plate 11 which is configured to conduct the electric current from the electronic interrupting unit 6 to the second phase 3 connection terminal.Furthermore, as in the previously described variant, the phase conductive portion 9 allows heat from said at least one electronic power cut-off component 7 of the first assembly E1 to be dissipated by thermal conduction to the first phase connection terminal 2, and the additional phase conductive plate 11 allows heat from said at least one electronic power cut-off component 7 of the second assembly E2 to be dissipated by thermal conduction to the second phase connection terminal 3. Moreover, it is not necessary for the additional phase conductive plate 11 to be mounted on the same side of the electronic board 12 as said at least one electronic power cut-off component 7 of the second assembly E2 to establish the electrical and thermal connection between the additional phase conductive plate 11 and said at least one electronic power cut-off component 7 of the second assembly E2.

[0053] Preferably and as shown in particular in Figures 5 to 7, said at least one electronic power cut-off component 7 of the second assembly E2 is mounted on the first face 13 and includes a heat sinking element oriented against the first face 13, the additional phase conductive plate 11 has an additional contact interface 16 which is arranged opposite the second face 14, against it and aligned with said at least one electronic power cut-off component 7 of the second assembly E2 and is electrically connected to the electronic board 12 without direct electrical and thermal contact with said at least one electronic power cut-off component 7 of the second assembly E2.

[0054] Advantageously, in this case said at least one electronic power cut-off component 7 of the first assembly El and said at least one electronic component of power cut 7 of the second E2 assembly are mounted in opposition, respectively on the second face 14 and on the first face 13.

[0055] Preferably and as shown in particular in figures 3, 4, 6 and 7, the first face 13 is conductive and is electrically and thermally connected to the second conductive face 14, the first conductive face 13 being in direct electrical and thermal contact with the contact interface 15 of the phase conductive portion 9 so as to connect it indirectly electrically and thermally to said at least one electronic power cut-off component 7 of the first assembly El mounted on the second face 14.

[0056] Advantageously, this method avoids the need for a connection by means of an electrical cable or electrical braid to establish the electrical and thermal connection between the phase conductive portion 9 and said at least one electronic power cut-off component 7 of the first set El.

[0057] Preferably and as shown in particular in figures 6 and 7, the second face 14 is conductive and is electrically and thermally connected to the first conductive face 13, the second conductive face 14 being in direct electrical and thermal contact with the additional contact interface 16 of the additional phase conductive plate 11 so as to connect it indirectly electrically and thermally to said at least one electronic power cut-off component 7 of the second assembly E2 mounted on the first face 13.

[0058] Advantageously, this method avoids the need for a connection by means of an electrical cable or electrical braid to establish the electrical and thermal connection between the additional phase conductive plate 11 and said at least one electronic power cut-off component 7 of the second assembly E2.

[0059] Preferably and as shown in particular in figures 1 to 3 and 5 and 6, the electronically cut-off protection equipment further comprises a galvanic isolation mechanism comprising a first set of contacts with a first fixed contact 17 and a first movable contact 18 arranged on the phase current line in series with said at least one electronic power cut-off component 7 upstream or downstream of the phase conductive portion 9.

[0060] The galvanic isolation mechanism makes it possible to isolate the electronically cut-off protection equipment in particular after the opening of said at least one electronic power cut-off component 7 following the occurrence of a fault, by interrupting the flow of current on the phase current line P.

[0061] Preferably, the one-piece conductive part 10 is made of metal and preferably of copper or aluminum.

[0062] Preferably, said at least one electronic power cutoff component 7 comprises at least one power transistor and preferably at least one MOSFET and / or a JFET and / or an IGBT.

[0063] The housing 1 preferably has an overall parallelepiped shape with a first main face 19 and a second main face (not visible), and lateral faces, respectively rear 20, upper 21, lower 22, front 23 extending from one to the other of the first and second main faces 19 and with a width, that is to say the gap between the first and second main faces, equal to an integer number of times a predetermined distance, called module, generally about 18 millimeters.

[0064] Thanks to this advantageous arrangement, the format of the housing 1 is modular and results in a modular electronic cut-off protection device.

[0065] The electronically controlled protective device shown in Figures 1 to 3 has a width of one module, while that shown in Figures 5 and 6 has a width of two modules. These examples are not limiting.

[0066] The electronically interrupting protection device may include a single-phase P current line, in which case it is said to be unipolar, or several single-phase P current lines, in which case it is said to be multipolar.

[0067] Figures 1 to 3 illustrate a single-pole electronic cut-off protection device.

[0068] The electronically disconnected protective device may further include a neutral current line. Figures 5 and 6 illustrate an electronically disconnected protective device with a phase current line P and a neutral current line.

[0069] The electronically switching protection equipment can be a circuit breaker or perform a differential circuit breaker protection function, but also other functionalities for example current and voltage measurement, protection against electrical arc faults in the installation.

[0070] When the electronically disconnected protective device performs a residual current circuit breaker protection function, it preferably includes a residual current sensor for detecting residual current faults and which is connected to the control unit. The residual current sensor is capable of, and intended at least to, measure the residual current flowing between at least one phase current line P and the neutral current line and to output a signal representing the differential current between the phase current line P and the neutral current line. The residual current sensor enables the detection of residual current faults.

[0071] The first phase 2 connection terminal can be a screw cage terminal or a self-locking cage terminal or similar. In the examples illustrated in the figures, the first phase 2 connection terminal is a self-locking cage terminal. automatic spring type and is located inside the housing 1 near the upper lateral face 21.

[0072] The second phase 3 connection terminal can be a screw cage terminal or a self-locking terminal or similar. In the examples illustrated in the figures, the second phase 3 connection terminal is a mixed self-locking and screw cage type terminal and is located inside the housing 1 near the lower side face 22.

[0073] In the case of a first self-tightening connection terminal 2 illustrated in the figures, the conductive part 4 comprises an elastically deformable metal piece that allows at least one power supply conductor from the network or a load to be clamped at the contact portion 5. In the examples illustrated in the figures, this elastically deformable metal piece comprises two elastic arms joining together. The conductive part 4 is located inside the housing 1 near the upper lateral face 21.

[0074] The control unit (not shown) of the electronic protection release is electrically connected to the electronic cut-off unit 6. The control unit and the electronic cut-off unit 6 are arranged inside the housing 1. For example, the control unit may include at least one microcontroller and at least one power driver.

[0075] The control unit and the electronic switching unit 6 may respectively comprise one or more electronic boards. Alternatively, the control unit and the electronic switching unit 6 could comprise a single electronic board including said microcontroller and said power driver and said at least one electronic power switching component 7. In the examples illustrated in the figures, the electronic switching unit 6 and the control unit are not grouped on the same electronic board, but on two separate electronic boards connected electrically and mechanically to each other; only the electronic board 12 is shown.

[0076] In this case, the electronic switching unit 6 comprises the electronic board 12 on which is mounted and preferably integrated said at least one electronic power switching component 7. The electronic board 12 is preferably parallel to the first and second main faces 19 of the housing 1 and extends lengthwise between the first and second connection terminals 2, 3 and widthwise between the rear side face 20 and the front side face 23. In the examples illustrated in the figures, the electronic board 12 is preferably arranged at least partially opposite the second main face.

[0077] The first set E1 of power cut-off electronic component 7 and the second set E2 of power cut-off electronic component 7 are of preferably mounted in series, for example in a head-to-tail fashion, on the current line of phase P.

[0078] In the illustrated examples, the first assembly E1 and the second assembly E2 each comprise two electronic power-switching components 7. These examples are not limiting. The first assembly E1 comprises at least two electronic power-switching components 7 in the same direction and connected in parallel. The second assembly E2 comprises at least two electronic power-switching components 7 in the same direction and connected in parallel.

[0079] The heat sink element of the electronic power cut-off component 7 is generally made of metal and is connected to an electrode of the electronic power cut-off component 7 and is fixed to a ceramic or preferably molded plastic body of the electronic power cut-off component 7.

[0080] The heat sink element (not shown) of the electronic power cut-off component 7 is generally made of metal, for example anodized aluminum.

[0081] It can be fixed to a ceramic or preferably molded plastic body of the electronic power cut-off component 7.

[0082] In this case, the heat sink can be in the form of a metal plate, corresponding to the drain of the power cutoff electronic component 7, which is positioned opposite an insulated face. Depending on the type of power cutoff electronic component 7, the drain can also provide an electrical connection with an added heat sink as described below. This can be the case, for example, when the drain is located on the face of the power cutoff electronic component 7, which may be the upper face, not resting against one of the faces 13, 14 of the electronic board 12. However, when the drain is located on the face of the power cutoff electronic component 7, which may be the lower face, resting on one of the faces 13, 14 of the electronic board 12, the drain does not provide an electrical connection with an added heat sink.

[0083] Alternatively, the heat sink element may be a separate part attached to the electronic power cutoff component 7 and, in particular, not corresponding to the drain. In this case, the heat sink element may be in the form of a part with a plurality of fins. Either this heat sink element is not in electrical contact with the drain of the electronic power cutoff component 7 and is mounted on the insulated face, or this heat sink element may be in electrical contact with the drain of the electronic power cutoff component 7. It follows that, in this embodiment, the drain must be located on the face of the electronic power cutoff component 7 that does not rest against one of the faces 13, 14 of the electronic board 12.

[0084] The phase-conducting portion 9 forming a heat sink 8 can be preferably presented in the form of a flat piece or flat plate. Preferably, the flat piece or flat plate is arranged in the housing 1 parallel to the first and second main faces 19 and to the electronic board 12. In addition, the flat piece or flat plate is arranged opposite one of the first and second faces 13, 14 of the electronic board 12 and opposite one of the first and second main faces 19 of the housing 1. In the illustrated examples, the flat plate is arranged in the housing 1 opposite the first face 13 of the electronic board 12 and opposite the first main face 19 of the housing 1.

[0085] The phase conductive portion 9 is located in the extension of the contact portion 5 of the first connection terminal 2.

[0086] A monobloc conductive part 10 is understood to be a part formed in one piece, for example by bending or stamping, of a conductive part, preferably metallic. In other words, the contact portion 5, preferably conductive, and the phase conductive portion 9 are not two distinct and separate parts; there is no mechanical connection between two distinct parts formed between the contact portion 5 and the phase conductive portion 9.

[0087] The additional phase conductive plate 11 forming a heat sink 8 may preferably be in the form of an additional flat piece or flat plate. Preferably, the additional flat piece or flat plate is arranged in the housing 1 parallel to the first and second main faces 19 and to the electronic board 12. Furthermore, the additional flat piece or flat plate is arranged opposite one of the first and second faces 13, 14 of the electronic board 12 and opposite one of the first and second main faces 19 of the housing 1. In the illustrated examples, the additional flat plate is arranged in the housing 1 opposite the second face 14 of the electronic board 12 and opposite the first main face 19 of the housing 1.

[0088] The first face 13 of the electronic card 12 may include a conductive layer (not shown) which is in direct contact on one side with the contact interface 15 and on the other side with said at least one electronic power cut-off component 7 of the first assembly EL. This conductive layer may consist of a solder material.

[0089] The second face 14 of the electronic board 12 may include an additional conductive layer (not shown) which is in direct contact on one side with the additional contact interface 16 and on the other side with said at least one electronic power cut-off component 7 of the second assembly E2. This conductive layer may consist of a solder material.

[0090] The first fixed contact 17 is preferably mounted on the electronic board 12. As illustrated in Figures 1 to 4, the first fixed contact 17 is mounted protrudingly on the second face 14. The first fixed contact 17 may consist of a metal plate bent at 90 degrees having a general L shape, the longer portion of which is mounted on the second face 14 and the shorter portion is orthogonal to the second face 14.

[0091] Alternatively, the first fixed contact 17 is preferably part of the additional phase conductive plate 11, as illustrated in Figures 5 to 7.

[0092] The first movable contact 18 can be actuated by a control member of the type a lever 24. This lever 24 is preferably projecting from the front side face 23.

[0093] Figures 1 to 7 illustrate two examples in which the phase conductive portion 9 is electrically and thermally connected to said electronic switching unit 6 without direct electrical and thermal contact with said at least one electronic power switching component 7.

[0094] Figures 1 to 4 illustrate a first embodiment of the invention in which the modular electronically disconnecting protective device has a width of one module and is single-pole. The electric current flows from the second phase connection terminal 3 to the first phase connection terminal 2, and the modular electronically disconnecting protective device includes a galvanic isolation mechanism comprising the first set of contacts with the first fixed contact 17 and the first moving contact 18 arranged on the phase current line in series with the electronic power disconnecting components 7 upstream of the phase conductive portion 9.

[0095] Figures 1 to 4 show that the electronic switching unit 6 comprises a single electronic board 12 with the first assembly E1 comprising two electronic power switching components 7 on said phase current line P mounted on the second face 14 and the second assembly E2 comprising two electronic power switching components 7 on said phase current line P mounted on the second face 14. The two electronic power switching components 7 of the second assembly E2 are electrically connected in series in a back-to-back configuration with the two electronic power switching components 7 of the first assembly E1 and are adjacent to them. The two electronic power switching components 7 of the first assembly E1 and of the second assembly E2 each comprise a heat sinking element (not visible) oriented against the second face 14.The first fixed contact 17 is mounted on the electronic board 12, protruding from the second face 14.

[0096] Figures 3 and 4 show that the contact interface 15 of the phase-conducting portion 9 is arranged opposite the first face 13, against it, and aligned with the two electronic power-cutting components 7 of the first assembly El and is electrically and thermally connected to the electronic board 12 without direct electrical and thermal contact with the two power cut-off electronic components 7 of the first assembly El.

[0097] Figures 5 to 7 illustrate a second embodiment of the invention in which the modular electronically disconnected protective device has a width of two modules and comprises a phase current line and a neutral current line. The electric current flows from the second phase connection terminal 3 to the first phase connection terminal 2, and the modular electronically disconnected protective device includes a galvanic isolation mechanism comprising the first set of contacts with the first fixed contact 17 and the first moving contact 18 arranged on the phase current line in series with the electronic power disconnecting components 7 upstream of the phase conductive portion 9.

[0098] Figures 5 to 7 show that the electronic switching unit 6 comprises a single electronic board 12 with the first set El comprising two electronic power switching components 7 on said phase current line P mounted on the second face 14 and the second set E2 comprising two electronic power switching components 7 on said phase current line P mounted on the first face 13. The two electronic power switching components 7 of the second set E2 are electrically connected in series in a back-to-back fashion with the two electronic power switching components 7 of the first set EL. The two electronic power switching components 7 of the first set El and of the second set E2 each comprise a heat sinking element (not visible) oriented respectively against the second face 14 and the first face 13.The modular electronic switching protection equipment includes the additional phase conductive plate 11 forming on the one hand the second part of the phase current line P and on the other hand another heat sink 8. The additional phase conductive plate 11 is on the one hand downstream of the first set of contacts of the galvanic isolation mechanism and on the other hand upstream of the electronic switching unit 6. The first fixed contact 17 is part of the additional phase conductive plate 11.

[0099] Figures 6 and 7 show that the contact interface 15 of the phase-conducting portion 9 is arranged opposite the first face 13, against it, and aligned with the two electronic power-cutting components 7 of the first assembly 11, and is electrically and thermally connected to the electronic board 12 without direct electrical and thermal contact with the two electronic power-cutting components 7 of the first assembly 11. The additional contact interface 16 of the additional phase-conducting plate 11 is arranged in view of the second face 14, against it and being aligned with the two electronic power cut-off components 7 of the second set E2 and is electrically connected to the electronic board 12 without direct electrical and thermal contact with the two electronic power cut-off components 7 of the second set E2.

[0100] Of course, the invention is not limited to the embodiments described and shown in the accompanying drawings. Modifications remain possible, particularly with regard to the composition of the various elements or by substitution of technical equivalents, without departing from the scope of protection of the invention.

Claims

Demands

1. Electronically disconnected protective equipment comprising at least: - a housing (1), - a phase current line (P) between a first phase connection terminal (2) and a second phase connection terminal (3), the first / second phase connection terminal (2, 3) comprising a conductive part (4) comprising at least one contact portion (5) configured to make contact with a power supply conductor of the network or a load, - an electronic disconnect unit (6) comprising at least one electronic power disconnect component (7) disposed on said phase current line (P), - an electronic protective release comprising at least one control unit coupled to said electronic disconnect unit (6) configured to control the opening of said at least one electronic power disconnect component (7) in the event of a fault, - at least one heat sink (8) made of conductive material,The electronically controlled protection device is characterized in that: - the conductive part (4) of the first phase connection terminal (2) is extended by a phase conductive portion (9) forming on the one hand a first part of the phase current line (P) and on the other hand a heat sink (8), the conductive part (4) and the phase conductive portion (9) forming a single conductive part (10), - the phase conductive portion (9) being electrically and thermally connected to said electronic switching unit (6) so as to dissipate the heat from said at least one electronic power switching component (7) by thermal conduction and to conduct the current from said electronic switching unit (6) and / or to said electronic switching unit (6).

2. Electronically switching protective device according to claim 1, characterized in that the phase conductive portion (9) is electrically and thermally connected to said electronic switching unit (6) without conductive braid or conductive cable.

3. Electronically cut-off protective device according to claim 1 or claim 2, characterized in that the phase conductive portion (9) is electrically and thermally connected to said electronic switching unit (6) by forming at least one direct electrical and thermal contact with said at least one electronic power switching component (7).

4. Electronically cut-off protective apparatus according to claim 1 or claim 2, characterized in that the phase conductive portion (9) is electrically and thermally connected to said electronic cut-off unit (6) without direct electrical and thermal contact with said at least one electronic power cut-off component (7).

5. Electronically interrupting protective apparatus according to any one of claims 1 to 4, characterized in that said electronic interrupting unit (6) comprises at least one electronic card (12) comprising a first face (13) and a second face (14) opposite the first face (13) and in that said electronic interrupting unit (6) comprises a first set (El) of at least one electronic power interrupting component (7) on said phase current line (P) mounted on the first face (13) or the second face (14) and a second set (E2) of at least one electronic power interrupting component (7) on said phase current line (P) mounted on the first face (13) or the second face (14) and electrically connected in a back-to-back fashion to said at least one electronic power interrupting component (7) of the first set (El).

6. Electronic cut-off protection device according to claims 4 and 5, characterized in that said at least one electronic power cut-off component (7) of the first assembly (El) is mounted on the second face (14) and comprises a dissipative element oriented against the second face (14), the phase-conducting portion (9) has a contact interface (15) which is disposed opposite the first face (13), against it and aligned with said at least one electronic power cut-off component (7) of the first assembly (El) and is electrically and thermally connected to the electronic board (12) without direct electrical and thermal contact with said at least one electronic power cut-off component (7) of the first assembly (El).

7. Electronically cut-off protective device according to claim 6, characterized in that said at least one electronic component of power cut-off (7) of the second assembly (E2) is mounted on the second face (14) being adjacent to said at least one electronic power cut-off component (7) of the first assembly (E1) and includes a heat sinking element oriented against the second face (14).

8. Electronically switching protection device according to claim 6, characterized in that it comprises an additional phase conductive plate (11) forming on the one hand a second part of the phase current line (P) and on the other hand a heat sink (8), the additional phase conductive plate (11) being electrically and thermally connected to said electronic switching unit (6) so as to dissipate the heat from said at least one electronic power switching component (7) of the second assembly (E2) at least by thermal conduction and to conduct the current to said electronic switching unit (6) from the second phase connection terminal (3), if the phase conductive portion (9) is electrically connected to said electronic switching unit (6) so as to conduct the current from said electronic switching unit (6).

9. Electronically switching protection device according to claim 6, characterized in that it comprises an additional phase conductive plate (11) forming on the one hand a second part of the phase current line (P) and on the other hand a heat sink (8), the additional phase conductive plate (11) being electrically and thermally connected to said electronic switching unit (6) so as to dissipate the heat from said at least one electronic power switching component (7) of the second assembly (E2) at least by thermal conduction and to conduct the current from said electronic switching unit (6), if the phase conductive portion (9) is electrically connected to said electronic switching unit (6) so as to conduct the current from the first phase connection terminal (2).

10. Electronically interrupting protective apparatus according to claim 8 or claim 9, characterized in that said at least one electronic power interruption component (7) of the second assembly (E2) is mounted on the first face (13) and comprises a heat sink oriented against the first face (13), the additional phase conductive plate (11) has an additional contact interface (16) which is disposed opposite the second face (14), against it and being aligned with said at least one electronic power cut-off component (7) of the second set (E2) and is electrically connected to the electronic board (12) without direct electrical and thermal contact with said at least one electronic power cut-off component (7) of the second set (E2).

11. Electronic cut-off protection apparatus according to any one of claims 6 to 10, characterized in that the first face (13) is conductive and is electrically and thermally connected to the second conductive face (14), the first conductive face (13) being in direct electrical and thermal contact with the contact interface (15) of the phase conductive portion (9) so as to indirectly connect it electrically and thermally to said at least one electronic power cut-off component (7) of the first assembly (El) mounted on the second face (14).

12. Electronic cut-off protection apparatus according to any one of claims 10 to 11, characterized in that the second face (14) is conductive and is electrically and thermally connected to the first conductive face (13), the second conductive face (14) being in direct electrical and thermal contact with the additional contact interface (16) of the additional phase conductive plate (11) so as to indirectly connect it electrically and thermally to said at least one electronic power cut-off component (7) of the second assembly (E2) mounted on the first face (13).

13. Electronically cut-off protective apparatus according to any one of claims 1 to 12 characterized in that it further comprises a galvanic isolation mechanism comprising a first set of contacts with a first fixed contact (17) and a first movable contact (18) arranged on the phase current line in series with said at least one electronic power cut-off component (7) upstream or downstream of the phase conductive portion (9).

14. Electronically cut-off protective device according to any one of claims 1 to 13, characterized in that the one-piece conductive part (10) is made of metal and preferably of copper or aluminum.

15. Electronically cut-off protective device according to any one of claims 1 to 14, characterized in that said at least one electronic power cut-off component (7) includes at least one power transistor and preferably at least one MOSFET and / or one JFET and / or one IGBT.