阅读说明：本技术 插拔连接器 (Plug-in connector ) 是由 B.韦格拉茨 D.施韦尔努斯 于 2019-07-12 设计创作，主要内容包括：本发明涉及一种插拔连接器(1)用于连接和分离电导线,其带有至少一个电气的接触元件(3),其中,该至少一个接触元件(3)关联有最少一个温度-传感器装置(4)。有利地设置成,温度-传感器装置(4)具有带有至少一个温度传感器(6)的传感器支架(5),其中,传感器支架(5)构造环形或管形地围绕接触元件(3)的且直接接触的接触区段(5a)以及布置在其处的、容纳该至少一个温度传感器(6)的保持区段(5b),且其中,不仅接触区段(5a)、而且保持区段(5b)由电绝缘的、然而能导热的塑料构成。(The invention relates to a plug connector (1) for connecting and disconnecting electrical lines, comprising at least one electrical contact element (3), wherein at least one temperature sensor device (4) is associated with the at least one contact element (3). It is advantageously provided that the temperature sensor device (4) has a sensor carrier (5) with at least one temperature sensor (6), wherein the sensor carrier (5) is designed as a contact section (5a) which surrounds the contact element (3) in an annular or tubular manner and is in direct contact with it, and a holding section (5b) which is arranged there and which accommodates the at least one temperature sensor (6), and wherein both the contact section (5a) and the holding section (5b) are made of an electrically insulating, yet thermally conductive plastic.)

1. Plug connector (1) for connecting and disconnecting electrical lines, having at least one electrical contact element (3), wherein at least one temperature sensor device (4) is associated with at least one of the contact elements (3), characterized in that the temperature sensor device (4) has a sensor carrier (5) having at least one temperature sensor (6), wherein the sensor carrier (5) is designed as a directly contacting contact section (5a) which surrounds the contact element (3) in an annular or tubular manner, and a holding section (5b) which is arranged there and which accommodates at least one of the temperature sensors, and wherein both the contact section (5a) and the holding section (5b) are made of an electrically insulating, yet thermally conductive plastic.

2. The plug connector (1) according to claim 1, characterized in that the contact section (5a) is formed in one piece with the retaining section (5 b).

3. The plug connector (1) according to claim 1 or 2, characterised in that the retaining section (5a) is arranged at an outer surface (8) of the contact section (5b) which is of annular or tubular design.

4. The plug connector (1) according to one of claims 1 to 3, characterized in that the sensor carrier (1) is designed integrally with the contact element (3).

5. Plug connector (1) according to claim 4, characterised in that the sensor carrier (1) is injection-moulded onto the contact element (3) according to a plastic injection-moulding method.

6. The plug connector (1) according to one of claims 1 to 3, characterised in that the contact section (5a) is constructed from a flexible hose which can be mounted on the relevant contact element (3), the retaining section (5b) being arranged on the hose.

7. Plug connector (1) according to claim 6, characterised in that the flexible hose is constructed in the type of a shrink hose which, due to thermal effects, abuts against the contact element (3).

8. The plug connector (1) according to one of the preceding claims, characterized in that at least one temperature sensor (6) is configured integrally with the holding section (5b) of the sensor carrier (5) or is releasably held there.

9. The plug connector (1) according to one of the preceding claims, characterized in that the electrically insulating, however thermally conductive plastic has a thermally conductive additive.

10. The plug connector (1) according to claim 9, characterized in that the thermally conductive additive is an electrically non-conductive additive.

Technical Field

The invention relates to a plug connector (Steckverbinder) according to the preamble of claim 1.

Background

DE 102013016550 a1 discloses an electrical connection unit for an electrical plug connection, in particular a charging plug for an electric vehicle, comprising a plug connector with at least two pin-shaped contact elements and a sensor module for temperature monitoring. The sensor module has a carrier plate and at least one sensor mounted thereon for monitoring an electrical plug connection. The carrier plate is arranged orthogonally to the longitudinal extension of the contact elements and has two openings through which pin-shaped contact elements are guided. The carrier plate is in direct, heat-conducting contact with the contact element. In order to improve the heat transfer to the sensor module, a thermal bridge (waermebluecke) is provided, which is realized, for example, by springs or by a thermally conductive paste. Alternatively, thermally conductive, electrically insulating plastics or ceramics are to be arranged. This solution is considered to be suboptimal with regard to accurate temperature determination, since here a relatively small heat transfer-or contact surface between the carrier plate and the contact element is combined with a large heat-loss surface of the carrier plate.

DE 102014102991B 3 discloses a plug connector with a sensor arrangement, in which at least two sensors are provided, which are arranged in the plug connector and are in direct contact with the electrical connection contacts (surrounding the electrical connection contacts by the sensors in a form-fitting manner). A sensor receptacle (Aufnahme) is provided in the housing of the plug connector, which likewise is designed as a housing and only accommodates or surrounds the sensor and the electrical connection contacts. The housing of the sensor receptacle can be embodied in one piece as an injection-molded part or in two parts as a half-shell.

DE 102015004313 a1 discloses a plug for a vehicle charging cable, in particular of an electric or hybrid vehicle, which has temperature monitoring by means of sensors for charging regulation and charging monitoring. The sensor is arranged at a distance from the current contact with voltage and is located in a housing element which is filled with a thermally conductive and voltage-insulating material, for example a thermally conductive paste.

Disclosure of Invention

The object of the present invention is to provide a plug connector of the type which is alternative in view of the prior art and has at least one temperature sensor device, which allows an optimum, precise and reliable temperature monitoring or temperature measurement at the electrical contact elements of the plug connector using simple and cost-effective means.

Starting from a plug connector for connecting and disconnecting electrical lines, which has at least one electrical contact element, wherein the at least one contact element has associated therewith at least one temperature sensor device, the proposed object is achieved in that the temperature sensor device has a sensor carrier (Sensorhalter) with at least one temperature sensor, wherein the sensor carrier is designed as a ring or tube surrounding the directly contacting contact sections of the contact elements and holding sections arranged there, which accommodate the at least one temperature sensor, and wherein both the contact sections and the holding sections are made of an electrically insulating, yet thermally conductive plastic.

A plug connector is provided which allows an optimum, precise and reliable temperature monitoring or temperature measurement at the electrical contact elements of the plug connector with simple and cost-effective means. A prerequisite for the described precise and reliable temperature monitoring or measurement and thus for an optimal measurement result is a sufficient contact surface for the heat transfer between the relevant contact element and the contact section, which can currently advantageously be embodied by the choice of the axial length of the annular or tubular contact section.

The dependent claims specify preferred developments or designs of the invention.

In order to reduce the number of components and thus the assembly effort, the contact section is preferably formed integrally with the retaining section. Furthermore, the heat transfer from the contact section to the holding section and further to the temperature sensor is optimized by this measure. Thermal paste or the like as preferred in the prior art is thus not necessary.

It is also preferably provided that the holding section is arranged on the outer surface (aussenmantelflache) of the annularly or tubular contact section. This has the advantage that the holding section is expediently equipped with the at least one temperature sensor and/or the connecting line contacting the temperature sensor.

According to a particularly advantageous embodiment of the invention, the sensor carrier is formed integrally with the associated contact element. This also further reduces the number of components and therefore the assembly costs.

In a further development of this particularly advantageous embodiment of the invention, the sensor carrier is preferably injected onto the contact element according to a plastic injection method known per se and proven suitable.

According to a further advantageous embodiment of the invention, the contact section is constructed, in contrast, from a flexible hose which can be mounted at the relevant contact section, the retaining section being arranged at the hose. This makes it possible, for example, to retrofit plug connectors with temperature sensor devices or to replace them more easily and cost-effectively. Furthermore, when the hose-shaped contact section is assembled, it can be adapted solely by being tailored to the available installation space and/or in view of an optimal heat transfer (Beschnitt).

It is also preferred that the flexible tube is designed in the form of a shrink tube which, due to thermal effects, bears against the contact element, whereby the heat transfer from the contact element to the sensor carrier and further to the temperature sensor is also optimized here.

In order to reduce the assembly effort, the at least one temperature sensor can be integrated with the holding section of the sensor holder, i.e., can be molded into the holding section or the sensor holder during the production thereof, for example, according to a plastic injection molding method. Alternatively, it can also be releasably held at the holding section, so that it can be easily replaced, for example in the event of a failure thereof.

In order to provide the electrically insulating plastic of the sensor carrier with the necessary thermal conductivity, the plastic matrix thereof preferably has thermally conductive additives, which are preferably electrically non-conductive additives and are formed, for example, from or have ceramic powder.

Drawings

The invention will be explained in detail below on the basis of embodiments which are schematically shown in the drawing. It is not limited thereto but encompasses all designs defined by the claims. Wherein:

fig. 1 very schematically shows a part section of a plug connector constructed according to the invention, an

Fig. 2 shows view "a" according to fig. 1.

List of reference numerals

1 plug connector

2 casing

3 contact element

4 temperature sensor device

5 sensor support

5a contact section

5b holding section

6 temperature sensor

7 connecting wire

8 outer surface.

Detailed Description

Fig. 1 shows a very schematic illustration of a plug connector 1 for connecting and disconnecting electrical lines, not shown in the drawings. The electrical line is formed, for example, by a charging cable for transmitting a high current for charging a so-called high-voltage battery (HV-batterie) functioning as a traction battery of an electric, hybrid, or plug-in hybrid vehicle. The plug connector 1 can be designed, for example, as a plug or a socket.

According to fig. 1 and 2, the plug connector 1 has two pin-shaped contact elements 3 in its housing 2. A temperature sensor device 4 is associated with each contact element 3 in order to enable charge regulation and charge monitoring of the high-voltage battery of an electric, hybrid or plug-in hybrid vehicle in view of, for example, the charging cable.

Each temperature sensor device 4 has a sensor carrier 5 with a temperature sensor 6. The temperature sensor 6 has a connecting line 7 for transmitting a measurement signal, for example, to a control and regulation unit, not shown in the drawing, for controlling the charging of the high-voltage battery. The sensor carrier 5 itself is designed in the form of a ring or tube around the directly contacting contact section 5a of the associated pin-shaped contact element 3 and the holding section 5b arranged there, which accommodates the at least one temperature sensor 6. Both the contact section 5a and the holding section 5b are made of an electrically insulating, yet thermally conductive plastic.

According to this exemplary embodiment, the retaining section 5b is arranged on the outer surface 8 of the annularly or tube-shaped contact section 5a and is formed integrally with it, i.e. in one piece. Such a sensor carrier 5 is injected onto the contact element 3 according to a first preferred embodiment of the invention according to a plastic injection method known per se and proven to be suitable. This makes it possible to provide the contact element 3 with the contact section 5a in advance, so that it is configured so to speak integrally with the contact element 3 and is intended to be fitted in the housing 2 of the plug connector 1.

In the context of the plastic injection molding method, the temperature sensor 6 is preferably also cast into the holding section 5b, so that it is formed integrally with the sensor carrier 5 and, if necessary, also integrally with the contact element 3. Alternatively, however, it is also possible and accordingly encompassed by the invention for the temperature sensor 6 to be arranged releasably as a fitting on the retaining section 5b of the sensor holder 5 and to be correspondingly exchangeable.

The electrically insulating and thermally conductive plastic used for forming the sensor carrier 5 is preferably a thermoplastic that can be processed according to the plastic injection molding method, and an electrically non-conductive, however thermally conductive additive, such as a ceramic powder, is preferably additionally embedded in the plastic matrix thereof.

According to a second embodiment variant of the invention, the contact section 5a of the sensor carrier 5 is likewise preferably formed integrally with its holding section 5b, but in contrast to the first embodiment variant the contact section 5a is formed by a flexible tube which can be mounted on the relevant contact element 3. According to this embodiment variant of the invention, the sensor carrier 5 is designed as a fitting and is pushed with its holding section 5a axially onto the pin-like contact element 3 during fitting. As already mentioned above, this allows, for example, the plug connector 1 to be retrofitted with the temperature sensor device 3 or replaced more easily and more cost-effectively. Furthermore, when the hose-shaped contact section 5a is assembled, it can be adapted solely by being tailored to the actually available installation space and/or in view of an optimum heat transfer (Beschnitt).

Advantageously, the contact section 5a, which is configured as a flexible hose, can be configured in the type of a shrink hose which, due to thermal effects, is pressed against the associated pin-like contact element 3. The heat transfer from the contact element 3 to the sensor carrier 5 and further to the temperature sensor 6 is thereby advantageously optimized.

In order to reduce the assembly effort, the at least one temperature sensor 6 can be integrated with the holding section 5b of the sensor holder 5, i.e. can be cast therein according to the plastic injection molding method during the production of the holding section 5b or the sensor holder 5. Alternatively, it can also be held releasably at the holding section 5b, so that it can be easily replaced, for example in the event of a failure thereof.