阅读说明：本技术 接触装置和电动机 (Contact device and motor ) 是由 O.兰格 M.普里斯 A.勒奇 E.绍霍夫 于 2021-05-13 设计创作，主要内容包括：本发明涉及一种用于使尤其是被调温介质包围的第一构件(1)和第二构件(2)电接触的接触装置(10),所述接触装置具有：用于在所述第一构件(1)和第二构件(2)之间进行热传递的导热的接触元件(a)、用于在第一构件(1)和第二构件(2)之间、尤其是在第一构件(1)和向第二构件(2)导引的至少一条(指的是电的)线路(L1、L2)之间至少部分地容纳接触元件(a)的壳体(e),和具有固定元件(c)的连接元件(b),所述固定元件用于将向第二构件(2)导引的至少一条线路(L1、L2)固定在壳体(e)上并且用于使所述至少一条线路(L1、L2)与导热的接触元件(a)电接触,壳体(e)这样设计,使得通过所述壳体(e)在第一构件(1)上的支撑,在所述壳体(e)和所述第一构件(1)之间为接触元件(a)形成介质密封地封闭的容纳空间(j)。(The invention relates to a contact device (10) for electrically contacting a first component (1) and a second component (2), in particular surrounded by a temperature control medium, comprising: a thermally conductive contact element (a) for heat transfer between the first component (1) and the second component (2), a housing (e) for accommodating the contact element (a) at least in sections between the first component (1) and the second component (2), in particular between the first component (1) and at least one (electrical) line (L1, L2) leading to the second component (2), and a connecting element (b) having a fastening element (c) for fastening at least one line (L1, L2) leading to the second component (2) to the housing (e) and for electrically contacting the at least one line (L1, L2) with the thermally conductive contact element (a), the housing (e) being designed such that a media-tight accommodation of the contact element (a) is formed between the housing (e) and the first component (1) by the support of the housing (e) on the first component (1), the housing (e) forming a media-tight accommodation between the housing (e) and the first component (1) A nanocpace (j).)

1. A contact arrangement (10) for electrically contacting a first component (1) and a second component (2), the contact arrangement having:

a thermally conductive contact element (a) for heat transfer between the first component (1) and the second component (2),

a housing (e) for at least partially accommodating the contact element (a) between the first component (1) and the second component (2),

and a connecting element (b) having a fastening element (c) for fastening the at least one line (L1, L2) which is guided to the second component (2) to the housing (e) and for electrically contacting the at least one line (L1, L2) to the thermally conductive contact element (a),

the housing (e) is designed such that a medium-tightly closed receiving space (j) is formed between the housing (e) and the first component (1) for the contact element (a) by the support of the housing (e) on the first component (1).

2. Contact device (10) according to claim 1,

it is characterized in that the preparation method is characterized in that,

the housing (e) can be supported and fixed in a medium-tight manner on the first component (1),

and/or the housing (e) has at least one form-and/or friction-fit element (f1) and/or at least one sealing element (f) for supporting the housing (e) on the first component (1) in order to seal the receiving space (j) for the contact element (a) in a fluid-tight manner relative to the surroundings (h) of the first component (1).

3. Contact device (10) according to claim 1 or 2,

it is characterized in that the preparation method is characterized in that,

the housing (e) has a sleeve-shaped and/or cup-shaped base body which surrounds the contact element (a) at least partially on the circumferential side,

and/or the receiving space (j) has a free space and/or an air cushion surrounding the contact element (a), said free space and/or air cushion at least partially surrounding the contact element (a) on the circumferential side.

4. Contact device (10) according to one of the preceding claims,

it is characterized in that the preparation method is characterized in that,

the housing (e) has a rigid wall (e1) for surrounding the contact element (a) on the circumferential side,

or the housing (e) has a flexible, elastic, bendable and/or foldable wall (e1) for surrounding the contact element (a) on the circumferential side.

5. Contact device (10) according to one of the preceding claims,

it is characterized in that the preparation method is characterized in that,

the housing (e) has a cover (e2) for covering the contact element (a),

wherein the connecting element (b) for the fastening element (c) is formed, fastened and/or integrated on the cover (e2),

and/or wherein the at least one line (L1, L2) leading to the second component (2) is clamped between the cover (e2) and the head region (c2) of the fastening element (c).

6. Contact device (10) according to one of the preceding claims,

it is characterized in that the preparation method is characterized in that,

the fastening element (c) has a fastening screw, a bayonet locking projection and/or a latching and/or clamping element,

and/or the connecting element (b) has a threaded sleeve, a bayonet lock guide and/or a snap-and/or clip element corresponding to the fastening element (c) in order to positively and/or frictionally fasten the fastening element (c) to the connecting element (b),

and/or sealing means are provided between the connecting element (b) and the fixing element (c),

in order to seal a receiving space (j) for a contact element (a) in a fluid-tight manner with respect to the surroundings (h) of the first component (1).

7. Contact device (10) according to one of the preceding claims,

it is characterized in that the preparation method is characterized in that,

the housing (e) has a corrosion-resistant and/or medium-tight material, such as plastic, and/or a corrosion-resistant coating,

and/or the connecting element (b) and/or the fastening element (c) comprise a thermally conductive material, for example a metal.

8. Contact device (10) according to one of the preceding claims,

it is characterized in that the preparation method is characterized in that,

the contact elements (a) have a thermally conductive material, for example a liquid thermally conductive material, for example a thermally conductive glue, or a solid thermally conductive material, for example a thermally conductive pad,

and/or the contact element (a) can be fixed to the first component in a supporting and/or material-bonding manner,

or the contact element (a) is fixed in the housing (e) on the underside (e3) in an inner bearing and/or bonded manner.

9. An electric motor (100) having a contact arrangement (10) according to one of the preceding claims for electrically contacting a first component (1) in the form of a stator and a second component (2) in the form of a pulse-width inverter.

10. The electric motor (100) of claim 9,

it is characterized in that the preparation method is characterized in that,

a stator housing (11) is provided for accommodating the first component (1), wherein a temperature control medium, for example in liquid and/or gaseous form, is accommodated in the stator housing (11) in order to regulate the temperature of the first component (1) and/or of the contact device (10).

Technical Field

The invention relates to a contact device for electrically contacting a first component, in particular a temperature control medium-enclosed component, with a thermally conductive contact element for heat transfer between the first and second components, a housing for at least partially accommodating the contact element between the first and second components, and a connecting element with a fastening element for fastening at least one line, which is guided to the second component, to the housing and for electrically contacting the at least one line with the thermally conductive contact element, wherein the housing is designed such that a medium-tightly closed accommodating space is formed for the contact element between the housing and the first component by the support of the housing on the first component. The invention also relates to an electric motor having a corresponding contact device for electrically contacting a first component in the form of a stator and a second component in the form of a pulse-controlled inverter.

Background

Contact arrangements for electrical contact members are known in principle. Busbars are often used to make electrical contact of components with other components arranged at a spaced distance. Some contact arrangements use thermally conductive materials (Thermal Interface materials, or TIM for short) in order to improve the volume resistance between the busbar and the component to be connected. The heat-conducting material also produces a heat-absorbing structure between the hot busbar and the cooler component to which the busbar is connected. The contact means are usually in contact with a cooling medium, such as oil, which, however, may have a negative effect on the heat-conducting material. The cooling medium may attack the thermally conductive material, thereby possibly decomposing the material. The decomposed heat-conducting material can then lead to indirect losses at the components to be connected.

Disclosure of Invention

The object of the present invention is therefore to provide an improved contact arrangement for electrically contacting a first component and a second component, in particular surrounded by a temperature control medium, which contact arrangement can be reliably temperature-controlled, is reliable in operation and has a longer service life. The object of the present invention is to provide an improved contact device for electrically contacting a first component, in particular a first component surrounded by a temperature control medium, with a second component, which contact device is simple and inexpensive to construct and can be easily mounted on the first component. The object of the invention is to provide an improved electric motor having a corresponding contact device for electrically contacting a first component in the form of a stator and a second component in the form of a pulse-controlled inverter.

The object of the invention is achieved according to a first aspect of the invention by a contact device for electrically contacting a first component, in particular a first component surrounded by a temperature control medium, with a second component. The object of the invention is also achieved according to a second aspect of the invention by an electric motor having a corresponding contact device for electrically contacting a first component in the form of a stator and a second component in the form of a pulse-controlled inverter. The technical features disclosed for the individual inventive aspects can be combined with one another in such a way that the disclosure relating to the inventive aspects of the invention can always be cited with one another.

According to a first aspect, the invention provides a contact device for electrically contacting a first component (for example in the form of a stator of an electric motor) and a second component (for example in the form of a pulse inverter), in particular surrounded by a temperature control medium (oil and/or liquid and/or gas), having: a thermally conductive contact element for heat transfer between a first component and a second component (for example from a spatial and functional point of view), a housing for accommodating the contact element at least partially between the first component and the second component (for example from a spatial point of view), in particular (for example, in particular, next to or in close proximity to the component), between the first component and at least one line leading to the second component, and a connecting element (which may be formed, fixed and/or integrated on the housing), which has a fixing element for fixing at least one (electrical) line leading to the second component (for example, a line in the form of a busbar and/or a contact bridge) on the housing and for bringing the at least one line into electrical contact with the thermally conductive contact element, the housing is designed such that a receiving space for the media-tight closure (cover) of the contact element is formed between the housing and the first component by the support of the housing on the first component.

The contact arrangement according to the invention can be used advantageously in any position in which a high-voltage electrical contact (and thus a thermal contact) occurs between two or more components, in particular under the influence of a temperature control medium, in particular in an electric motor for electrically connecting a pulse-controlled inverter to a stator.

The electric motor according to the invention can preferably be used in vehicles, preferably electric vehicles, which travel highly automatically or fully automatically or autonomously.

The contact element according to the invention can be, for example, a solid (for example in the form of a mat) or liquid (for example in the form of an adhesive) thermally conductive material, a so-called thermal interface material. The contact element can be attached to the first component, for example, in a bonded manner, or can be attached in the housing, for example, in a bonded manner, and/or can be preassembled by means of other fastening means, for example, in the form of clips, undercuts and/or latching elements, on the housing base.

The housing according to the invention can have a base body which can be adjusted automatically and/or manually in terms of tolerance technology to the required distance from the first component (or to the required distance relative to the first component). Furthermore, the base body can be designed structurally (for example by means of bellows and/or a flexible wall) in such a way that it can be adjusted flexibly, elastically, flexibly and/or foldingly to the necessary distance for the contact element to be cooled.

The contact arrangement according to the invention can also be designed without the first component and/or the second component or at least one line leading to the second component. The contact arrangement, however, has all the essential elements that ensure electrical contact (and thus thermal contact) with the first component and/or the second component or at least one line leading to the second component when cooperating therewith. Only the functionally effective connection between the component according to the invention (comprising the contact element, the housing, the connecting element and the fastening element) and the first component and/or the second component or at least one line leading to the second component is therefore defined.

The invention is based on the idea of sealing the heat-absorbing structure (i.e., the contact element) between the first component and/or the second component or at least one line leading to the second component from all possible corrosive and/or aggressive temperature control media in the environment of the components by means of a sealing device. For this purpose, the housing is designed according to the invention in such a way that a media-tightly closed receiving space is formed for the contact element between the housing and the first component by the support of the housing on the first component.

The invention thus advantageously provides an improved contact arrangement for electrically contacting a first component and a second component, in particular surrounded by a temperature control medium (Temperierungsmedium). The contact arrangement according to the invention allows a reliable temperature control, since the connecting element and the fastening element serve to electrically contact the at least one line with the thermally conductive contact element. The contact arrangement according to the invention is reliable in operation, since a media-tightly closed receiving space for the contact element is formed between the housing and the first component. Due to the reliable temperature control of the contact element, the contact arrangement according to the invention has an extended service life without the risk of the contact element being attacked by the temperature control medium. Furthermore, the contact arrangement according to the invention is simple and inexpensive to construct. Furthermore, the contact arrangement according to the invention can be easily mounted on the first component. The invention also relates to an improved electric motor having a corresponding contact device for electrically contacting a first component in the form of a stator and a second component in the form of a pulse-controlled inverter.

In addition, the invention can provide, in terms of the contact arrangement, that the housing can be supported (or supported) in a medium-tight manner and fixed on the first component. A closed receiving space can thus be formed by the support of the housing on the first component and the fastening between the housing and the first component.

Furthermore, the invention can provide, in terms of the contact device, that the housing has at least one form-and/or friction-fit element, for example in the form of a labyrinth seal, and/or at least one sealing element, in particular a form-sealing element (formdichleme), for example a solid sealing element, an O-ring and/or a liquid sealing device, in order to seal the receiving space for the contact element in a fluid-tight manner (i.e. in a sealing manner with respect to a solid, liquid and gaseous medium) with respect to the surroundings of the first component, in particular with respect to the temperature control medium, in order to support the housing on the first component. The at least one form-and/or friction-fit element can be used to fix the housing on the first component. The housing can be fixed to the first component, for example, by simply inserting the housing on a correspondingly shaped and/or friction-fit element on the first component. The sealing element can establish an automatic sealing of the receiving space for the contact element by fixing the housing on the first component. This simplifies the mounting of the contact arrangement on the first component.

In addition, the invention can provide, in terms of the contact arrangement, that the housing has a sleeve-like and/or cup-like base body which at least partially surrounds the contact element on the circumferential side. The contact element can be accommodated in the housing in a protective manner in this way.

Furthermore, the invention can provide, in terms of the contact arrangement, that the receiving space has a free space and/or an air cushion surrounding the contact element, which at least partially surrounds the contact element on the circumferential side, and/or a dedicated medium (for example a pasty and/or gel-like, in particular inert material, for example a material compatible with TIM materials). The free space and/or the air cushion are advantageously free of a temperature control medium. The free space and/or the air cushion are advantageously used to compensate possible volume fluctuations of the contact element. The dedicated medium may preferably be thermally conductive.

In addition, the invention can provide, in terms of the contact arrangement, that the housing has a rigid, in particular cylindrical, shell shapeFor surrounding the contact element on the circumferential side. The contact element can thus be accommodated in the housing in a protected manner, also protected against mechanical influences.

The invention can advantageously provide, in terms of the contact arrangement, that the housing has a flexible, elastic, bendable and/or foldable, in particular cylindrical and/or bellows-like wall for surrounding the contact element on the circumferential side. In this way, possible manufacturing tolerances in the component according to the invention can be reliably compensated.

Furthermore, the invention can provide, in the case of the contact arrangement, that the housing has a cover for covering the contact elements, wherein the connecting elements for the fastening elements are formed, for example molded, fastened and/or integrated on the cover, for example by being at least partially injection-molded in the material of the housing, and/or wherein the at least one line leading to the second component is clamped between the cover (optionally with a washer and/or locking ring on the cover) and the head region of the fastening element. In this way, a simple design of the housing can be achieved.

In addition, the invention can provide, in terms of the contact device, that the fastening element has a fastening screw, a bayonet lock projection and/or a latch and/or a clip element, and/or that the connecting element has a threaded sleeve, a bayonet lock guide and/or a latch and/or a clip element corresponding to the fastening element, in order to positively and/or frictionally secure the fastening element to the connecting element. In this way, the at least one line leading to the second component can be clamped between the cover (optionally with a washer and/or locking ring on the cover) and the head region of the fastening element.

In addition, the invention can provide, in terms of the contact device, that a sealing device is provided between the connecting element and the fastening element in order to seal the receiving space for the contact element in a fluid-tight manner with respect to the surroundings of the first component, in particular with respect to the temperature control medium. This allows a media exchange between the receiving space and the surroundings of the first component, in particular the temperature control medium, to be reliably prevented by the connecting element.

The housing can advantageously have a corrosion-resistant and/or media-tight material, for example a plastic, and/or a corrosion-resistant coating. In this way, the sealing against the temperature control medium can be improved.

According to a further advantage of the invention, the connecting element and/or the fastening element can have a thermally conductive material, for example a metal. In this way, an electrical contact and thus a thermal contact between the contact element and the at least one line leading to the second component can be achieved. Since the contact element is placed on the first component, an electrical and thus thermal contact with the at least one line and thus with the second component can be achieved by means of the contact element, the random connection element and the random fixing element.

Within the scope of the invention, the contact element can have a thermally conductive material, for example a liquid thermally conductive material, for example a thermally conductive glue, or a solid thermally conductive material, for example a thermally conductive pad. This reduces the electrical resistance between the first component and the at least one line and thus the second component.

The contact element can be supported and/or materially fixed on the first component, for example. In this way, a simple mounting of the contact arrangement can be achieved.

At the same time, it is conceivable within the scope of the invention for the contact element to be fastened in the housing on the inside against the bottom side and/or in a bonded manner. This makes it possible to mount the contact arrangement particularly easily and conveniently, wherein the fitter can hold and fix the contact arrangement with all the components on the first component with only one hand.

According to a second aspect of the invention, an electric motor is provided, which has a contact device for electrically contacting a first component in the form of a stator and a second component in the form of a pulse-controlled inverter, which contact device can be designed as described above. The same advantages as described above in connection with the contact arrangement according to the invention are achieved with the motor according to the invention. Reference is made entirely herein to these advantages.

In the context of the electric motor according to the invention, a stator housing for accommodating the first component can also be provided, wherein a temperature control medium, for example in liquid and/or gaseous form, is accommodated in the stator housing in order to regulate the temperature of the first component and/or the contact device, and wherein in particular at least one line is guided from the contact device in the stator housing of the first component to a second component outside the stator housing.

Drawings

The following detailed description of preferred embodiments of the invention shows further measures which improve the invention, by means of the description of the preferred embodiments according to the drawings. The features mentioned in the description may be of importance for the invention here individually or in any combination. It is to be noted herein that the drawings are solely for the purpose of illustration and are not to be construed as limiting the invention in any manner. In the drawings:

fig. 1 shows a schematic view of a contact arrangement according to the invention.

Detailed Description

The figure shows a contact arrangement 10 according to the invention for electrically contacting a first component 1 (for example in the form of a stator d of an electric motor 100) and a second component 2 (for example in the form of a pulse inverter), which are in particular surrounded by a temperature control medium h (for example an oil/air mixture). The contact device 10 has a thermally conductive contact element a for heat transfer between the first component 1 and the second component 2 (for example from a spatial and functional point of view). Furthermore, the contact arrangement 10 has a housing e for at least partially accommodating the contact element a between the first component 1 (e.g., as viewed spatially) and the second component 2, in particular between the first component 1 and at least one line L1, L2 leading to the second component 2 (e.g., as viewed spatially, in particular, next to or in close proximity to the components). Furthermore, the contact device 10 has a connecting element b (which can be formed, fixed and/or integrated on the housing e) which has a fixing element c for fixing at least one (electrical) line L1, L2, which is guided to the second component 2, to the housing e and for electrically contacting the at least one line L1, L2 with the thermally conductive contact element a, wherein the housing e is designed such that a receiving space j for the media-tight closure of the contact element q is formed between the housing e and the first component 1 by the support of the housing e on the first component 1.

The contact arrangement 10 can be used advantageously in any position in which a high-voltage electrical contact (and thus a thermal contact) occurs between two or more components 1, 2, in particular under the influence of a temperature control medium. The contact arrangement 10 can be used particularly preferably for electrically connecting a pulse-controlled inverter to the stator d in the electric motor 100.

An electric motor 100, which is not shown in detail in fig. 1, likewise represents an aspect of the invention and can preferably be used for vehicles, preferably electric vehicles, which are driven with high automation or fully automatically or autonomously. The electric motor 100 can have a stator housing 11 as shown in fig. 1 for accommodating the first component 1, wherein a temperature control medium h, for example, in a liquid and/or gaseous state, can be accommodated in the stator housing 11 in order to control the temperature of the first component 1 and/or of the contact device 10. It is conceivable here that at least one line L1, L2 can be guided from the contact device 10 in the stator housing 11 of the first component 1 to the second component 2 outside the stator housing 11. The stator g or the stator carrier shown in fig. 1 can also have a temperature control medium g for the internal components of the stator g in the stator carrier. The temperature control medium g can have a similar temperature level to the temperature control medium h. However, the temperature of the temperature media g, h may also be different.

The contact elements a can be provided, for example, by a solid (for example in the form of a mat) or liquid (for example in the form of an adhesive) thermally conductive material, a so-called thermal interface material. The contact element a can be attached to the first component 1, for example, in a bonded manner, or can be preassembled in the housing e, for example, in a bonded manner and/or by means of other fastening means, for example in the form of clips, undercuts and/or latching elements, on the bottom side e3 of the housing e.

The housing e can have, for example, a sleeve-like and/or cup-like base body which can be adjusted automatically and/or manually in terms of tolerance technology to the necessary distance from the first component 1. Furthermore, the base body can be designed structurally (for example by means of a bellows and/or a flexible wall e1) in such a way that it can be flexibly, elastically, flexibly and/or foldably adjusted to the necessary distance for the contact element a to be cooled.

The invention provides a heat-absorbing structure between the first component 1 and/or at least one line L1, L2 (which is heated to a greater extent due to the current) leading to the second component 2 via the contact element a, which is closed by a sealing device against all possible corrosive and/or aggressive temperature control media in the surroundings of the components 1, 2.

As shown in fig. 1, the housing e can be supported and fastened in a medium-tight manner on the first component 1. The housing e can have at least one illustrated form-and/or friction-fit element f1, for example in the form of a labyrinth seal, and/or at least one sealing element f, for example a form-sealing element, for example a solid sealing element, an O-ring and/or a liquid sealing device, in order to seal the receiving space j for the contact element a in a fluid-tight manner with respect to the surroundings h of the first component 1, in particular with respect to the temperature control medium.

It is also shown that a free space and/or an air cushion and/or a special medium (for example a pasty and/or gel-like, in particular inert material, for example a material compatible with TIM materials) can be provided in the receiving space j, surrounding the contact element a at least partially on the circumferential side.

The housing e may also have a rigid, in particular cylindrical shell-like wall e1 for surrounding the contact element a on the circumferential side. As already mentioned above, the housing e can have a flexible, elastic, bendable and/or foldable, in particular cylindrical and/or bellows-like wall e1 for surrounding the contact element a on the circumferential side.

Furthermore, the housing e can have a cover e2 for covering the contact element a, wherein the connecting element b for the fastening element c can be formed, fastened and/or integrated (for example injection-molded) on the cover e 2. As shown in fig. 1, at least one line L1, L2 leading to the second component 2 can be clamped between the cover e2 (possibly with a washer b2 and/or a locking ring on the cover e2) and the head region c2 of the fastening element c.

Fig. 1 also shows that the fastening element c can have a fastening screw, a bayonet lock projection and/or a latch and/or clip element, wherein the connecting element b can have a threaded sleeve, a bayonet lock guide and/or a latch and/or clip element corresponding to the fastening element c, in order to positively and/or frictionally secure the fastening element c on the connecting element b. By fastening the fastening element c to the connecting element b, the at least one line L1, L2 leading to the second component 2 can be clamped between the cover e2 (optionally with a washer b2 and/or a locking ring on the cover e2) and the head region c2 of the fastening element c.

A sealing device, which is not shown in fig. 1 for reasons of simplicity, may advantageously be provided between the connecting element b and the fastening element c in order to seal the receiving space j for the contact element a in a fluid-tight manner with respect to the surroundings h of the first component 1, in particular with respect to the temperature control medium h.

The housing e can preferably have a corrosion-resistant and/or medium-tight material, for example a plastic, and/or a corrosion-resistant coating. The material of the housing does not have to be thermally conductive.

The connecting element b and the fastening element c can still comprise a thermally conductive material, for example a metal. It is also conceivable that the connecting element b can be threaded on both sides. The connecting element b can be screwed onto the lid e2 by means of an external thread. The fastening element c, for example in the form of a screw, can be screwed into the connecting element b by means of an internal thread.

The foregoing description of the drawings describes the invention by way of example only. Of course, individual features of the embodiments can be freely combined with one another as long as they are technically reasonable, without leaving the scope of the invention.

List of reference numerals

100 motor

10 contact device

11 stator housing

1 first structural member

2 second structural member

L1 line

L2 line

a contact element

b connecting element

b2 gasket

c fixing element

c2 head area

d stator

e casing

e1 wall

e2 cover

e3 bottom side

f sealing element

f1 shape and/or friction fit element

j accommodating space

g temperature control Medium

h temperature regulating medium