DE102020132116A1 - Electrical assembly with a temperature sensor assembly - Google Patents

Abstract

An electrical assembly (44) comprises a carrier element (46), an electrical contact element (42) to be arranged on the carrier element (46) and having a shaft section (425) extending along a longitudinal axis (L), a temperature sensor assembly (45) for monitoring a temperature at the electrical contact element (42) and a heat conducting element (47) for transferring heat from the electrical contact element (42) to the temperature sensor assembly (45). It is provided that the heat-conducting element (47) has a gripping section (478) which is elastically deformable radially to the longitudinal axis (L) and is designed to accommodate the electrical contact element (42) on the shaft section (425) over a circumferential angle (α). of heat at the shank portion (425).

Description

The invention relates to an electrical assembly according to the preamble of claim 1 and a connector part for plugging connection to a mating connector part.

Such an assembly comprises a carrier element, an electrical contact element to be arranged on the carrier element, which has a shaft section extending along a longitudinal axis, a temperature sensor assembly for monitoring a temperature at the electrical contact element, and a heat-conducting element for transferring heat from the electrical contact element to the temperature sensor assembly.

Such an electrical assembly can be part of a connector part, for example, which can be a plug or a socket, for example. Such a connector part can be used in particular on a charging device for transmitting a charging current. The connector part can be designed in particular as a charging plug or charging socket for charging a motor vehicle driven by an electric motor (also referred to as an electric vehicle) and can be used on the part of a charging station, e.g. as a charging plug on a charging cable, or also on the part of a vehicle as what is known as an inlet.

Charging plugs or charging sockets for charging electric vehicles must be designed in such a way that large charging currents can be transmitted. Because the thermal power loss increases quadratically with the charging current and it is also stipulated that a temperature increase at a connector part must not exceed 50 K, it is necessary to provide temperature monitoring for such charging plugs or charging sockets in order to prevent overheating of components of the charging plug or charging socket at an early stage recognize and possibly cause a modification of the charging current or even a shutdown of the charging device.

At one from the EP 2 605 339 A1 known charging plug is a temperature sensor on an insulator arranged approximately in the middle between contact elements of the contact plug. The temperature sensor can be used to detect whether excessive heating is occurring anywhere on the contact elements, in order to switch off the charging process if necessary.

At one from the GB 2 489 988 A known charging plugs, several temperature sensors are provided, which transmit temperature data via a line. Depending on the temperature range in which the temperatures recorded at the temperature sensors are located, a charging process is regulated.

From the US 6,210,036 B1 a plug connector is known in which several temperature sensors are linked in series via a single-wire line. The temperature sensors are arranged on an insulating body and, at a predetermined temperature, exhibit a significant change in resistance that is so large that a control circuit connected to the line can detect the change and adjust the current flow through the charging plug, possibly switching it off.

In charging plugs known from the prior art, temperature sensors are embedded in an insulating body, for example. This is necessary in order to electrically isolate the temperature sensors from the contact elements, which can heat up. At the same time, however, this has the disadvantage that a temperature change at one of the contact elements is transmitted with a time delay via the insulating body and is therefore perceived at the temperature sensors with a time delay. Such arrangements of temperature sensors are therefore unsuitable under certain circumstances, particularly in the case of concepts that are intended to enable rapid shutdown of a load circuit in the event of a fault.

There is a need for a temperature sensor assembly that can be constructed simply and cost-effectively and that allows temperature monitoring at the contact elements with a rapid response behavior for rapid initiation of countermeasures, for example rapid disconnection of a charging current.

A heat-conducting element can be used for this purpose, which transfers heat in a targeted manner from an associated contact element to the temperature sensor assembly. However, a fundamental difficulty here is that such a heat-conducting element for absorbing heat on an electrical contact element should be arranged in a spatially close relationship to the contact element in order to efficiently absorb heat on the contact element. However, such a close positional relationship can possibly impede assembly, because a radially protruding seal can be attached to the contact element, for example, which can possibly have to be moved past the heat-conducting element.

At one from the DE 10 2015 106 251 A1 known connector part are arranged contact elements in openings of a printed circuit board. One or more sensor devices are provided on the printed circuit board, which serve to detect heating to detect at one or more contact elements.

the DE 10 2017 108 526 A1 describes a charging connector for a motor vehicle with a connection module and a load contact module. The connection module can be connected to supply lines for the power supply. The load contact module has a load contact for transmitting a charging power. The load contact module is attached to the connection module in a detachable and replaceable manner and has a temperature sensor.

The object of the present invention is to provide a connector part that enables temperature monitoring on an electrical contact element with quick response behavior and simple assembly in a simple and cost-effective manner.

This object is solved by an object with the features of claim 1.

Accordingly, the heat-conducting element has a gripping section which is elastically deformable radially to the longitudinal axis and is designed to grip the electrical contact element on the shank section over a circumferential angle for absorbing heat on the shank section.

To assemble the electrical assembly, the contact element is assembled on the carrier element and brought into engagement with the heat-conducting element, so that a heat-conducting connection is established between the contact element and the temperature sensor assembly via the heat-conducting element. The heat-conducting element is connected to the contact element via the gripping section, which encompasses the shank section of the contact element at least over a circumferential section and thus comes into contact with the shank section.

Due to the fact that the gripping section is elastically deformable, the contact with the shank section can be made automatically and can also take place under elastic tension, which makes it possible to produce a gap-free connection between the heat-conducting element and the contact element. With the assembly assembled, heat can thus be efficiently absorbed at the contact element via the heat-conducting element and conducted to the temperature sensor assembly, so that the temperature at the contact element can be monitored reliably, precisely and with less time delay via the temperature sensor assembly.

A gap-free contact between the heat-conducting element and the contact element can be ensured here, even with tolerances existing on contact elements or on other components, in that a contact of the heat-conducting element on the shaft section of the contact element under (caused by the inherent elasticity of the heat-conducting element or applied by an external force) elastic tension can take place.

The elastic deformability of the heat-conducting element enables simple assembly in that the heat-conducting element can, for example, be radially widened for assembly, so that the contact element can be engaged and brought into contact with the gripping section, possibly also with a radially protruding sealing element arranged on the contact element, for example in the form of an O-ring.

The heat-conducting element can be designed, for example, by an elastically deformable spring element. For example, the heat-conducting element can be formed as a stamped and bent part, for example from a metal material with good thermal conductivity, for example spring steel.

In one embodiment, the circumferential angle at which the gripping section grips the shank section in the assembled position is greater than 180°. The gripping section thus extends over an angle greater than 180° around the shank section and accommodates the shank section in its interior, with elastic contact with the shank section and thus producing efficient heat transfer from the contact element to the heat-conducting element.

In one embodiment, the gripping section has two legs for resting on opposite sides of the shank section. The two legs can be elastic in themselves and can also be adjusted elastically relative to one another, so that the radial width of the wrap-around section can be changed. In particular, to mount the contact element on the heat-conducting element, a radial distance between the legs can be increased, so that the contact element can be inserted between the legs in order to then bring the legs into contact with the shaft section and thus produce a heat transfer between the contact element and the heat-conducting element .

The gripping section can be shaped, for example, in the shape of a circular ring, but is circumferentially open in a peripheral section, so that the gripping section can be deformed radially and the contact element can be mounted on the heat-conducting element. The shaft section of the contact element can, for example, be circular-cylindrical (with one of the Longitudinal axis corresponding to the cylinder axis) be formed so that the encompassing portion can be brought into abutment with the shank portion.

In one variant, the contact element is separate from the heat-conducting element in a pre-assembly position and can be attached to the heat-conducting element for assembly along an assembly direction directed transversely to the longitudinal axis. In this case, the contact element can be inserted with its shank section in the mounting direction, for example between the legs of the wraparound section, with radial expansion of the wraparound section. If the shank section has been inserted into the enclosing section, the legs of the enclosing section come into contact with the shank section, wherein the abutment can take place under elastic pretension due to the intrinsic elasticity of the enclosing section.

In this configuration, the heat-conducting element can be pre-assembled on the carrier element in the pre-assembly position. The contact element is thus attached to the heat-conducting element already arranged on the carrier element in order to assemble the assembly. When it is attached, the shank section engages with the gripping section and thus comes into contact with the heat-conducting element.

In this configuration, the combination of the heat-conducting element and the contact element arranged on the carrier element can be attached to the temperature sensor assembly after the contact element has been mounted on the heat-conducting element in order to connect the heat-conducting element to the temperature sensor assembly.

In another variant, the contact element can be present separately from the heat-conducting element in a pre-assembly position and can be attached to the heat-conducting element for assembly along the longitudinal axis. In this configuration, the contact element is mounted on the heat-conducting element along the longitudinal axis along which the shaft section of the contact element extends and which corresponds, for example, to the cylinder axis of the circular-cylindrical shaft section, for example.

In this configuration, the gripping section of the heat-conducting element assumes a first position with a first radial width in the pre-assembly position and is deformed radially during assembly by interacting with the contact element and the carrier element to rest on the shaft section. As a result of the deformation, the gripping section is narrowed radially, so that the gripping section has a second radial width that is reduced compared to the first radial width when the contact element is in the installed position.

During assembly of the contact element along an assembly direction directed along the longitudinal axis, the heat-conducting element is preferably radially widened in the pre-assembled position. An (at least largely) relaxed position of the heat-conducting element corresponds to the radially widened position, so that the heat-conducting element assumes the radially widened position at its gripping section when the contact element is not mounted on the heat-conducting element. When the contact element is mounted on the heat-conducting element, the heat-conducting element is narrowed radially, so that the heat-conducting element is brought into contact with the shank section of the contact element.

During assembly, the contact element can already be pre-assembled on the carrier element, so that the contact element is attached to the heat-conducting element together with the carrier element. In this case, an active section is formed on the contact element or the carrier element, which acts on the encompassing section, with the result that the encompassing section is radially deformed and thus brought into contact with the contact element.

In this case, the abutment on the contact element by the heat-conducting element takes place against the internal stress of the gripping section with the application of force to the gripping section when the contact element is mounted on the heat-conducting element.

In this configuration, the heat-conducting element can be pre-assembled on the temperature sensor assembly, for example in the pre-assembly position. The assembly of the contact element on the heat-conducting element thus takes place with the heat-conducting element already arranged on the temperature sensor assembly.

To interact with the contact element or the carrier element, ends can be formed on legs of the gripping section, for example, which point radially outwards and are designed to interact with the contact element or the carrier element during assembly to deform the gripping section. For example, an active section formed on the contact element or the carrier element can act on the ends of the legs in order to thereby load the gripping section radially inwards and thus bring it into contact with the shank section of the contact element. When the contact element has reached its intended position in relation to the heat-conducting element, the gripping section of the heat-conducting element is in this way due to the interaction with the contact element or loaded on the support member so that the wraparound portion is held in abutment with the shank portion.

In one configuration, the carrier element has a receiving groove, which extends along a circumferential direction about the longitudinal axis, for receiving the wraparound section. The receiving groove can be delimited on an axially first side by a first engagement section and on an axially second side by a second engagement section, which project radially inwards relative to the receiving groove. The carrier element can be brought into engagement with associated engagement grooves on the shank section of the contact element via the engagement sections, in order in this way to mount and fix the contact element on the carrier element.

In one embodiment, the shank section has a collar section, which is located, for example, between the engagement grooves and projects radially outwards. If the contact element is mounted on the heat-conducting element, the gripping section can, for example, encompass the collar section and be in contact with the collar section.

In one configuration, the temperature sensor assembly has a temperature sensor and a printed circuit board. The temperature sensor is arranged on the printed circuit board, with the printed circuit board extending, for example, perpendicular to the longitudinal axis. The heat-conducting element has a connecting section which establishes a connection between the wraparound section and the printed circuit board and is to be thermally connected to the printed circuit board.

For example, a contacting element can be formed on the connecting section, which is designed to engage in an opening in the printed circuit board in order in this way to establish a thermal connection to the printed circuit board of the temperature sensor assembly. The connection section can extend, for example, perpendicularly along the longitudinal axis from the wraparound section. The contacting element can be formed, for example, by a bent end of the connecting section.

In another configuration, the connecting section can be connected to the printed circuit board, for example, over a large area, for example by means of a flat contact or also via a soldered connection.

For heat transfer from the heat conducting element to the temperature sensor, the printed circuit board has, for example, a heat transfer element, for example in the form of a metallized surface which is formed on a top, bottom or side surface of the printed circuit board or embedded in the printed circuit board. Heat is transferred from the heat-conducting element to the temperature sensor via the heat transfer element. The heat transfer element is preferably electrically isolated from the temperature sensor by not electrically connecting the heat transfer element to the temperature sensor. In this case, however, the temperature sensor is arranged in such a positional relationship to the heat transfer element that the temperature sensor can absorb and detect heat on the heat transfer element.

The electrical assembly can be part of a connector part, for example, which can be plugged into an associated mating connector part. The electrical contact element can be implemented in particular by a load contact of the connector part, via which electrical contact is established when the connector part is plugged into the mating connector part and via which load currents are conducted.

A plurality of temperature sensor assemblies can also be provided on such a connector part, with a separate temperature sensor assembly being able to be provided on each contact element that is used to transmit load currents, for example. The temperature sensor assemblies can have a common printed circuit board, for example, with each contact element being assigned a separate temperature sensor.

The connector part can be used, for example, as a charging plug or as a charging socket of a charging system for charging an electric vehicle. For this purpose, the connector part has contact elements which serve as load contacts for transmitting a charging current, for example in the form of a direct current or in the form of an alternating current. A temperature sensor assembly is preferably arranged on such load contacts, with each contact element being assigned its own temperature sensor assembly in an advantageous embodiment. The temperature sensor assembly is connected to a control device, for example, so that signals recorded via the temperature sensor assembly can be evaluated and used to control a charging current transmitted via the load contacts.

A temperature sensor of the type described here can, for example, be formed by a temperature-dependent resistor, for example a resistor with a positive temperature coefficient (so-called PTC resistors), whose resistance value increases with increasing temperature (also referred to as a PTC thermistor, which at low temperature has good electrical conductivity and at higher temperatures reduced electrical conductivity). Such temperature sensors can, for example, also have a non-linear temperature characteristic and can be made of a ceramic material, for example (so-called ceramic PTC thermistors).

However, it is also possible, for example, to use an electrical resistor with a negative temperature coefficient (so-called NTC resistors) as the temperature sensor, the resistance value of which falls as the temperature rises.

Alternatively or additionally, temperature sensors formed by semiconductor components can also be used.

• 1 eine schematische Darstellung eines Elektrofahrzeugs mit einem Ladekabel und einer Ladestation zum Aufladen;
• 2 eine Ansicht eines Steckverbinderteils in Form eines Inlets auf Seiten eines Fahrzeugs;
• 3 eine Ansicht eines Ausführungsbeispiels einer elektrischen Baugruppe mit zwei elektrischen Kontaktelementen, einem Trägerelement zum Tragen der Kontaktelemente und Temperatursensorbaugruppen zur Überwachung der Temperatur an den Kontaktelementen;
• 4 eine vergrößerte Ansicht der Anordnung gemäß 3, bei Montage der Baugruppe an einem Gehäuse eines zugeordneten Steckverbinderteils;
• 5 eine Ansicht der Kontaktelemente zusammen mit dem Trägerelement;
• 6 eine gesonderte Ansicht eines Wärmeleitelements;
• 7 eine Ansicht des Trägerelements mit daran angeordneten Wärmeleitelementen;
• 8 eine Ansicht eines Wärmeleitelements nach einem anderen Ausführungsbeispiel;
• 9 eine Ansicht des Wärmeleitelements an einer Leiterplatte einer Temperatursensorbaugruppe;
• 10 eine Ansicht des Wärmeleitelements nach der Montage eines zugeordneten Kontaktelements an dem Wärmeleitelement;
• 11 eine Ansicht des Kontaktelements mit montiertem Wärmeleitelement; und
• 12 eine schematische Ansicht eines Ausführungsbeispiels eines Wärmeleitelements in thermischer Verbindung mit einer Leiterplatte einer Temperatursensorbaugruppe.

The idea on which the invention is based is to be explained in more detail below with reference to the exemplary embodiments illustrated in the figures. Show it:

• 1 a schematic representation of an electric vehicle with a charging cable and a charging station for charging;
• 2 a view of a connector part in the form of an inlet on the side of a vehicle;
• 3 a view of an embodiment of an electrical assembly with two electrical contact elements, a support element for supporting the contact elements and temperature sensor assemblies for monitoring the temperature at the contact elements;
• 4 an enlarged view of the arrangement according to FIG 3 , upon assembly of the assembly to a housing of an associated connector part;
• 5 a view of the contact elements together with the carrier element;
• 6 a separate view of a heat conducting element;
• 7 a view of the carrier element with heat-conducting elements arranged thereon;
• 8th a view of a heat-conducting element according to another embodiment;
• 9 a view of the heat conducting element on a printed circuit board of a temperature sensor assembly;
• 10 a view of the heat-conducting element after the assembly of an associated contact element on the heat-conducting element;
• 11 a view of the contact element with mounted heat-conducting element; and
• 12 a schematic view of an embodiment of a heat conducting element in thermal communication with a printed circuit board of a temperature sensor assembly.

1 shows a vehicle 1 in the form of a vehicle driven by an electric motor (also referred to as an electric vehicle) in a schematic view. The electric vehicle 1 has electrically chargeable batteries, via which an electric motor for moving the vehicle 1 can be supplied with electricity.

In order to charge the batteries of the vehicle 1 , the vehicle 1 can be connected to a charging station 2 via a charging cable 3 . For this purpose, the charging cable 3 can be plugged with a charging plug 30 at one end into an associated mating connector part 4 in the form of a charging socket of the vehicle 1 and is connected to the charging station at its other end, for example via another charging plug 31 with a connector part 4 in the form of a charging socket 2 in electrical connection. Charging currents with a comparatively high current intensity are transmitted to the vehicle 1 via the charging cable 3 .

The connector part 4 on the vehicle 1 side and the connector part 4 on the charging station 2 side can differ. It is also possible to arrange the charging cable 3 firmly on the charging station 2 (without connector part 4).

2 shows an exemplary embodiment of a connector part 4 in the form of a charging socket, for example on the side of a vehicle (also referred to as a vehicle inlet), which can be plugged into an associated mating connector part 30 in the form of a charging plug on a charging cable 3, in order to connect the electric vehicle 1 to the charging station 2 to connect to the charging system. The connector part 4 has a housing part 40 on which plug-in sections 400, 401 are formed, with which the connector part 30 can be plugged along a plug-in direction E. Plug-in openings are formed on the plug-in sections 400, 401, in which contact elements 41, 42 are arranged, via which an electrical connection to the associated mating connector part 30 can be established in the event of a plug-in connection.

In the exemplary embodiment shown, contact elements 41 are arranged on a first, upper plug-in section 400, via which, for example, a charging current in the form of an alternating current can be transmitted. In addition, contact elements can be present via which control signals can be transmitted.

In contrast, two contact elements 42 are arranged on a second, lower plug-in section 401, via which a charging current can be transmitted in the form of a direct current. The contact elements 42 are connected to load lines 43 via which the charging current is conducted.

During operation, when a charging current is transmitted, heating occurs at the contact elements 41, 42, with high currents being able to flow in particular via the contact elements 42 for transmitting a charging current in the form of a direct current, for example up to 500 A. In order to prevent excessive heating exclude the connector part 4 and, if necessary, initiate measures to counteract excessive heating, a temperature rise at the contact elements 42 is to be monitored.

In order to monitor a temperature rise at the contact elements 42 serving as load contacts of such a connector part 4, the connector part 4 has an electrical assembly 44 which, in one exemplary embodiment, is shown in 3 until 7 is shown.

At the in 3 until 7 The electrical assembly 44 shown has two electrical contact elements 42 on a carrier element 46, which serve as load contacts for transmitting a charging current in the form of a direct current and, as shown in FIG 2 apparent on which in 2 Plug-in section 401 shown below are arranged for connection to associated mating contact elements of the mating connector part. The contact elements 42 are electrically connected at ends 420 to load lines 43 and are fed with a charging current via them.

In the exemplary embodiment shown, the contact elements 42 each extend longitudinally along a longitudinal axis L and have contact sections 424 in the form of contact sockets for the plugged connection with associated mating contact elements in the form of contact pins.

The contact elements 42 are attached to the housing 40 of the connector part 4 via the carrier element 46 (see 2 ) mounted and thus fixed to the housing 40. The carrier element 46 here forms two U-shaped receptacles, in each of which one of the contact elements 42 can be inserted. Each receptacle is formed by engagement sections 460, 462, which form a reception groove 461 axially between them and are designed to engage in engagement grooves 422, 423 on a cylindrical shank section 425 of the contact element 42, in order in this way to attach the respectively associated contact element 42 to the carrier element 46, as can be seen in particular from the enlarged view according to FIG 4 and according to the separate view of the carrier element 46 with the mounted contact elements 42 5 is evident.

In the embodiment according to 3 until 7 a heat conducting element 47 is accommodated in the receiving groove 461 of each receptacle of the carrier element 46, which serves to come into contact with a collar section 421 between the engagement grooves 422, 423 of the shank section 425 when the respectively associated contact element is mounted on the carrier element 46. The purpose of the heat-conducting element 47 is to enter into a thermal connection with the contact element 42 by resting on the shaft section 425, thus absorbing heat at the contact element 42 during operation and conducting it to a temperature sensor assembly 45 for temperature monitoring.

As can be seen from the separate view of the heat conducting element 47 according to FIG 6 As can be seen, the heat-conducting element 47 has a wraparound section 478, which extends over an angle α that is greater than 180°, for example between 180° and 270°, about the longitudinal axis L and, when the contact element 42 is mounted, serves to hold the collar section 421 of the To encompass the circumference of the shaft section 425 and receive it in its interior.

The gripping section 478 is formed by legs 472, 473, which come to rest on opposite sides of the shaft section 425 when the heat-conducting element 47 is connected to the contact element 42. A fastening section 474 is formed between the legs 472, 473, via which the heat-conducting element 47 is connected to the carrier element 46 in a form-fitting manner.

The heat-conducting element 47 is formed, for example, as a stamped and bent part from a material with good thermal conductivity, in particular a metal material, for example spring steel.

The heat conducting element 47 is elastically deformable in order to connect the contact element 42 to the heat conducting element 47 . Thus, before the respective contact element 42 is arranged on the carrier element 46, the heat-conducting element 47 is already preassembled on the carrier element 46. To mount the contact element 42 on the carrier element 46, the contact element 42 is inserted in a mounting direction M directed transversely to the longitudinal axis L into the respectively assigned receptacle of the carrier element 46. When contact element 42 is applied, shaft section 425 comes into contact with ends 475, 479 of legs 472, 473 at its collar section 421 and widens legs 472, 473 radially, so that contact element 42 can slide into wraparound section 478. The wraparound Section 478 is radially widened and, after insertion of the shank section 425, comes into circumferential contact with the collar section 421, this contact taking place under elastic pretension and thus a gap-free transition between the contact element 42 and the heat-conducting element 47 is produced.

The end 479 of the leg 472 of the gripping section 478 is followed by a connecting section 471 which is used to establish a connection between the heat-conducting element 47 and the temperature sensor assembly 45 .

The temperature sensor assembly 45 is assembled after the contact elements 42 have been assembled on the carrier element 46 and the heat-conducting elements 47 arranged thereon, in that the combination of carrier element 46, contact elements 42 and heat-conducting elements 47 is attached to the temperature sensor assembly 45 and the heat-conducting elements 47 are attached via the connecting sections 471 be connected to the temperature sensor assembly 45.

The temperature sensor assembly 45 has a printed circuit board 455 which forms an opening 450 for each contact element 42 through which the respective contact element 42 can be passed without the contact element 42 coming into contact with the printed circuit board 455 in the process. Radially offset from the respective opening 450, the printed circuit board 455 has an opening 451 for each heat-conducting element 47, with which the connecting section 471 can be brought into engagement with a contacting element 470 formed thereon in the form of a bent end, in order to thermally connect each heat-conducting element 47 to the To connect temperature sensor assembly 45.

Like this particular out 5 and 7 As can be seen, each contact element 42 is assigned a heat-conducting element 47 which can be brought into engagement with a contacting element 470 with a respectively assigned opening 451 in the printed circuit board 455 .

As this schematic in 12 is shown, a (separate) temperature sensor 454 is assigned to each heat-conducting element 47, which is attached to the printed circuit board 455 and formed, for example, by an SMD component. The heat conducting element 47 comes into engagement with the associated opening 451 of the printed circuit board 455 via the contacting element 470 and makes thermal (and electrical) contact, for example, with a connection section 452 in the form of a via in the opening 451 .

A heat transfer element 453 in the form of a metalized surface extends over a surface area from the connection section 452 to the region of the temperature sensor 454, so that heat is transferred to the temperature sensor 454. In this case, the heat transfer element 453 is formed, for example, on a flat outer side of the circuit board 455 or is embedded in the material of the circuit board 455 (as is shown schematically in 12 is shown). The temperature sensor 454 is in such a spatial relationship to the heat transfer element 453 that the temperature sensor 454 can efficiently detect heat, but the temperature sensor 454 is electrically insulated from the heat transfer element 453 and thus from the heat conducting element 47.

In the embodiment according to 3 until 7 the heat conducting element 47 expands radially when the contact element 42 is applied, so that when the contact element 42 is mounted, the heat conducting element 47 rests with the gripping section 478 under elastic tension on the shaft section 425 due to its inherent elasticity.

at a in 8th until 11 In the exemplary embodiment illustrated, a heat-conducting element 47 has, in contrast, a radial width in a relaxed starting position, which enables the contact element 42 to be attached in an assembly direction M directed along the longitudinal axis L, in particular by moving a sealing element 426 in the form of an O-ring through the heat-conducting element 47 the assembly.

Analogous to the above for the embodiment according to 3 until 7 has been described, the heat-conducting element 47 has legs 472, 473 which lie opposite one another and describe an angle α greater than 180° (approximately 360° in the exemplary embodiment). A connection to an associated temperature sensor assembly 45 is established via a connecting element 471 with a contacting element 470 formed thereon, as shown in FIG 9 and 10 is evident.

As per the view 9 As can be seen, the heat conducting element 47 in the exemplary embodiment shown is already arranged on the temperature sensor assembly 45 in a pre-assembly position and is widened on the legs 472, 473 in such a way that the contact element 42 moves in the mounting direction M into the heat conducting element 47 and above it into a housing dome 42 of the associated Connector part 4 can be used.

The assembly of the contact elements 42 on the assigned heat-conducting elements 47 takes place with contact elements 42 arranged on the carrier element 46. During assembly, the contact element 42 assigned to a heat-conducting element 47 is inserted into the heat-conducting element 47 by the contact element 42 being inserted via its contact section 424 in the form of a socket contact into the Heat conducting element 47 and is used in the associated housing dome 42, as in the transition from 9 towards 10 is evident.

Active sections 463 are formed on support element 46 in the form of ramp elements that protrude axially along assembly direction M Ends 476, 477 are loaded in the circumferential direction towards one another and thus pressed towards one another, with a radial narrowing of the clear width of the gripping section 478 gap-free contact between the contact element 42 and the heat-conducting element 47 is produced.

Both in the embodiment according to 3 until 7 as well as in the embodiment according to 8th until 11 the connection between the contact element 42 and the respectively assigned heat-conducting element 47 can be released by reversing the assembly process described above and thus bringing the heat-conducting element 47 out of contact with the contact element 42 .

The idea on which the invention is based is not limited to the exemplary embodiments described above, but can in principle also be implemented in a completely different manner.

A connector part of the type described here can advantageously be used in a charging system for charging an electric vehicle. The connector part can be a charging socket (as in the illustrated embodiment) or a charging plug.

However, another use is also conceivable. In principle, a connector part of the type described can be used wherever temperature monitoring, for example on contact elements, is desirable.

Reference List

1

vehicle

2

charging station

3

charging cable

30, 31

charging plug

4

connector part

40

housing part

400, 401

mating section

402

housing dome

41, 42

contact element

420

End

421

waistband section

422, 423

engagement groove

424

contact section (socket contact)

425

shank section

426

sealing element

43

load lines

44

electrical assembly

45

Temperature Sensor Assembly (PCB)

450

opening

451

opening

452

connection section

453

heat transfer element

454

temperature sensor

455

circuit board

46

carrier element

460

engagement section

461

receiving groove

462

engagement section

463

effective sections

47

heat conducting element

470

transmission section

471

connection section

472,473

leg

474

attachment section

475

End

476,477

End

478

wraparound section

479

End

a

angle

E

mating direction

L

longitudinal axis

M

mounting direction

QUOTES INCLUDED IN DESCRIPTION

This list of documents cited by the applicant was generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Patent Literature Cited

• EP 2605339 A1 [0005]
• GB 2489988A [0006]
• US 6210036 B1 [0007]
• DE 102015106251 A1 [0011]
• DE 102017108526 A1 [0012]

Claims (17)

Electrical assembly (44), with a carrier element (46), an electrical contact element (42) to be arranged on the carrier element (46) and having a shaft section (425) extending along a longitudinal axis (L), a temperature sensor assembly (45) for monitoring a temperature at the electrical contact element (42) and a heat conducting element (47) for transferring heat from the electrical contact element (42) to the temperature sensor assembly (45), characterized in that the heat conducting element (47) has a gripping section (478) which is elastically deformable radially to the longitudinal axis (L) and designed to encompass the electrical contact element (42) on the shank section (425) over a circumferential angle (α) for absorbing heat on the shank section (425). Electrical assembly (44) according to claim 1 , characterized in that the circumferential angle (α) is greater than 180°. Electrical assembly (44) according to claim 1 or 2 , characterized in that the gripping section (478) has two legs (472, 473) for abutting on opposite sides of the shaft section (425). Electrical assembly (44) according to one of Claims 1 until 3 , characterized in that the contact element (42) is separate from the heat conducting element (47) in a pre-assembly position and can be attached to the heat conducting element (47) for assembly along an assembly direction (M) directed transversely to the longitudinal axis (L). Electrical assembly (44) according to claim 4 , characterized in that the heat-conducting element (47) is pre-assembled in the pre-assembly position on the carrier element (46). Electrical assembly (44) according to claim 4 or 5 , characterized in that the contact element (42) is designed to radially widen the gripping section (478) to rest on the shaft section (425) when it is attached. Electrical assembly (44) according to one of Claims 1 until 3 , characterized in that the contact element (42) is present separately from the heat-conducting element (47) in a pre-assembly position and can be attached to the heat-conducting element (47) for assembly along the longitudinal axis (L). Electrical assembly (44) according to claim 7 , characterized in that the gripping section (478) of the heat-conducting element (47) assumes a first position with a first radial width in the pre-assembly position and, during assembly, by interacting with the contact element (42) or the carrier element (46) radially to bear against the Shaft portion (425) is deformed, so that the gripping portion (478) in the assembled position of the contact element (42) has a reduced, second radial width compared to the first radial width. Electrical assembly (44) according to claim 7 or 8th , characterized in that the heat conducting element (47) is pre-assembled in the pre-assembled position on the temperature sensor assembly (45). Electrical assembly (44) according to one of Claims 7 until 9 , characterized in that ends (476, 477) are formed on legs (472, 473) of the gripping section, which are designed to interact during assembly with the contact element (42) or the carrier element (46) to deform the gripping section (478). . Electrical subassembly (44) according to one of the preceding claims, characterized in that the carrier element (46) has a receiving groove (461) extending along a circumferential direction about the longitudinal axis (L) for receiving the wraparound section (478). Electrical assembly (44) according to claim 11 , characterized in that the carrier element (46) on an axially first side of the receiving groove (461) has a first engagement section (460) for engaging in a first engagement groove (422) of the shaft section (425) and on an axially second side of the receiving groove (461 ) has a second engagement portion (462) for engaging in a second engagement groove (423) of the shank portion (425). Electrical assembly (44) according to claim 12 , characterized in that the shaft portion (425) between the first engagement groove (422) and the second engagement groove (423) forms a collar portion (421) with which the gripping portion (478) can be brought into contact. Electrical assembly (44) according to one of the preceding claims, characterized in that the temperature sensor assembly (45) has a temperature sensor (454) and a printed circuit board (455) on which the temperature sensor (454) is arranged, the heat-conducting element (47) a connection portion (471) to be thermally connected to the circuit board (455). Electrical assembly (44) according to Claim 14 , characterized in that the circuit board (455) has an opening (451) into which the conn Extension section (451) can be inserted with a contacting element (470) formed on the connecting section (451). Electrical assembly (44) according to Claim 14 or 15 , characterized in that the circuit board (455) has a heat transfer element (453) for heat transfer from the opening (451) towards the temperature sensor (454). Connector part (4) for plugging connection to an associated mating connector part (30), characterized by an electrical assembly (44) according to one of the preceding claims.

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