EP3281498A1

EP3281498A1 - Assembly

Info

Publication number: EP3281498A1
Application number: EP16715288.3A
Authority: EP
Inventors: Christian Thum; Adnreas HAMMA; Günter EBNER
Original assignee: Marquardt GmbH
Current assignee: Marquardt GmbH
Priority date: 2015-04-10
Filing date: 2016-04-07
Publication date: 2018-02-14
Also published as: DE102016003866A1; CN107592988A; KR20170136602A; JP6739445B2; JP2018512741A; CN107592988B; WO2016162396A1; US20180092202A1; US10342117B2

Abstract

The invention relates to an electrical assembly (1) having a printed circuit board (2) and having a component (3). The component (3) can in particular be an electromechanical component, such as an electrical switching contact, an electrical switch, a relay or the like. The component (3) is connected to the circuit board (2) electrically and/or mechanically. A forked element (4) is arranged between the component (3) and the circuit board (2) to electrically and/or mechanically connect the component (3) to the circuit board (2).

Description

module

The invention relates to an assembly according to the preamble of patent claim 1.

Such an assembly can be used in a battery or an accumulator, in particular in such a battery in which large currents are to be switched. For example, in the assembly advantageously a circuit board can be contacted to the poles of the battery, wherein the circuit board serves as a carrier for a switching element. The assembly is particularly suitable for use in a motor vehicle.

Such an assembly comprises a first subassembly and a second subassembly, wherein the first subassembly is in electrical and / or mechanical connection with the second subassembly. At the electrical and / or mechanical connections mechanical stresses can occur, which in turn can lead to impairment of the assembly.

The invention is based on the object, the electrical and / or mechanical

To design a connection such that the mechanical stresses are reduced at the connection.

This object is achieved in a generic assembly by the characterizing features of claim 1.

In the inventive assembly is an adapter part for electrical and / or mechanical connection of the first subassembly with the second subassembly disposed between the first subassembly and the second subassembly. In particular, it is possible for forces acting between the two subassemblies to be absorbed by the adapter part. Such forces may arise due to tolerances and / or tolerance levels of the two sub-assemblies, due to stresses due to heating in at least one of the two sub-assemblies o. Because these forces in

Adapter part are added, the otherwise existing risk of

Impairment of the electrical and / or mechanical connection between the two subassemblies is at least reduced. Further embodiments of the invention are

Subject of the dependent claims.

In a further embodiment, the first subassembly may be a printed circuit board. The second sub-assembly may be a component.

In particular, the component may be an electromechanical component such as an electrical switch contact, an electrical switch, a relay or the like. Thus, it may be in the assembly to an electrical assembly, wherein the device is in electrical and / or mechanical connection with the circuit board. Such an electrical assembly is advantageously suitable for use in a motor vehicle battery.

In a particularly functionally reliable configuration, the adapter part may be a fork-shaped element. In particular, thus, the fork-shaped element for electrical and / or mechanical connection of the component to the printed circuit board between the component and the circuit board may be arranged.

In a further embodiment, the adapter part with the second subassembly, in particular thus the fork-shaped element with the component, can be screwed, riveted,

be welded, soldered o. The like. Be formed. As a result, a production-technically simple connection is created. The adapter part can be soldered in turn in a simple manner with the first partial bauble, in particular so the fork-shaped element with the circuit board. In a likewise simple way, electrical

Contact points on the circuit board for the soldering to be provided with the fork-shaped element. The printed circuit board may be a high current printed circuit board. For example, such a high-current circuit board may be provided with solid copper elements embedded in the circuit board for conducting a high current. Just the otherwise occurring in such high current circuit boards due to the high currents large

Thermal stresses are considerably reduced in the assembly according to the invention, so that destruction of the assembly is effectively prevented. The reliability of such, comprising a high-current circuit board assembly is considerably improved by means of the invention.

In an expedient embodiment, the fork-shaped element may have a base surface as well as fork tines departing from the base surface. The forks can protrude approximately perpendicularly from the base. The base can be configured approximately rectangular, wherein the forks can be arranged on the sides of the rectangular base in a simple manner. The forks can be easily attached to the electrical contact points.

In a compact way, the base of the fork-shaped element on the second

Subassembly, in particular so be attached to the device. If it appears expedient for the installation space available for the assembly, a connecting part can protrude from the base surface in a further embodiment. Namely, the connecting part, in particular the forks in relation to the base

stand opposite from the base. Then, the connecting part on the second subassembly, in particular so be attached to the device.

In a cost effective and simple way, it can be offered that the fork-shaped element is made of sheet metal as a stamped and bent part.

For a particularly preferred embodiment of the inventive electric

Assembly is to be determined below. In electromechanical control devices, the situation often arises that electromechanical switching elements are to be electrically connected to a central combination board. These connections cause mechanical forces in the X, Y and / or Z directions, which in turn cause mechanical stresses that are directed differently for each manufactured part. These mechanical stresses in turn cause these forces to act statically on all the components involved. This permanent stress can then lead to the destruction of the entire assembly.

The idea of the invention is to relax the tolerance layers by up to 100%, so that at most a small residual force acts on the components involved. With this solution, one can ensure that all occurring forces are substantially balanced.

Electromechanical assemblies comprising, for example, a relay and a printed circuit board are to be connected together. Due to the manufacturing parameters, each assembly has tolerances that are always present. So that when mounting the circuit board with the relay no mechanical stresses, there is the idea in providing an adapter part. The adapter part is for example a stamped and bent part, which connects the PCB contacts with the individual mechanical contact parts. The individual assemblies consisting of printed circuit board, adapter part and electromechanical assemblies are assembled. The adapter part is non-positively connected, for example by means of a screw, a weld and / or a riveted joint with the electromechanical contact. Furthermore, the adapter part is connected to the circuit board by a fixed connection, for example by means of a soldering. The

Of course, the order of the connection techniques can be different.

The mechanical connection between the electromechanical assembly and the adapter part is based on the present tolerance layers of the electromechanical component. This tolerance is kept both in the adapter part and in the circuit board. By the firm connection, for example by means of a soldering process or welding process, the existing tolerances are finally compensated. The The result obtained is that no mechanical stresses act on the assemblies.

Advantageously, therefore, for example, a circuit board, in particular a

High-current circuit board, created in which the connection to other modules is mechanically decoupled. Consequently, no or at most low mechanical stresses act on the individual assemblies, for example on the

Printed circuit board, a relay and / or other electrical or electronic components on the circuit board, a.

The advantages achieved by the invention are in particular in the following:

- No expensive printed circuit boards with special contact shapes are needed.

- All contact points to electromechanical assemblies can be connected to the same concept.

- It has created a good electrical connection.

- It is created a good thermal connection.

- It is created a secure connection technology.

- It is created a durable connection technology.

- It is a mechanically tension-free connection technology.

- There are good monitoring options in the production of the module.

Especially at high currents, the use of high-current printed circuit boards in an assembly according to the invention instead of the previous provision of a wiring harness is not so prone to interference as before. Likewise, such an arrangement designed according to the invention is also less expensive than previous cable harnesses, if all production-related parameters are taken into account. Furthermore, such, inventively designed arrangement is also reliable in operation.

Embodiments of the invention with various developments and

Embodiments are illustrated in the drawings and will be described in more detail below. Show it 1 is a schematic view of an electrical assembly in side view,

2 is a plan view of the assembly in the direction II of FIG. 1,

Fig. 3 shows an electrical assembly according to another embodiment in

Side view as well as top view and

4 shows a section through the assembly of Fig. 3rd

FIG. 1 shows an assembly 1 comprising a first subassembly 2 and a second subassembly 3. In the present case, the first subassembly 2 is a printed circuit board and the second subassembly 3 is a component. The component 3 is again an electromechanical component, specifically an electrical switching contact. The electrical switching contact 3, for example, part of an electrical switch, a relay o. The like. Be. The module 1 is thus an electrical module.

The two sub-assemblies 2, 3 of the assembly 1 are connected to each other in electrical and / or mechanical connection by the device 3 is in electrical and / or mechanical connection with the circuit board 2. For electrical and / or mechanical

Connection of the component 3 with the printed circuit board 2, an adapter part 4 between the component 3 and the circuit board 2 is arranged. And that is for every electrical

Connection of the component 3 an adapter part 4 is provided. With the help of the adapter part 4 acting between the two sub-assemblies 2, 3 forces are absorbed.

The adapter part 4 is designed here as a fork-shaped element. The

fork-shaped element 4 is screwed to the device 3, and that is a screw 5 for screwing the fork-shaped element 4 with the electric

Connection of the switch contact '3. Instead of a screw connection, the fork-shaped element 4 can also be riveted to the component 3, welded, soldered or the like.

be designed. The fork-shaped element 4 in turn can be soldered to the circuit board 2 by means of electrical contact points 6 on the circuit board 2. The fork-shaped element 4 has a base 7, which is configured approximately rectangular. The component 3 is fastened by means of the screw 5 to the base 7, in particular by the base 7 at the electrical connection of the

Switching contact 3 is fixed by means of the screw 5. Next, the fork-shaped element 4 from the base 7 outgoing, approximately vertically projecting forks 8. As can be seen with reference to FIG. 2, four fork-shaped prongs 8 are arranged approximately rectangularly on the sides of the base surface 7. The base 7 remote from the tip of the fork tine 8 is fixed by means of soldering to the electrical contact point 6 of the circuit board 2. The fork-shaped element 4 thus establishes the electrical and / or mechanical connection of the component 3 to the printed circuit board 2 via the base surface 7 and the fork tines 8. The fork-shaped element 4 is made of sheet metal as a punch-bend part.

While according to Fig. 1 and Fig. 2, the device 3 is substantially parallel to

In another embodiment, which is shown in Fig. 3 and Fig. 4, the component 3 is arranged substantially perpendicular to the printed circuit board 2, that is, mounted "horizontally." For example, this may be due to the electrical assembly 1 The adapter part, which in turn is designed as a fork-shaped element 4, has a base area 7 from which four fork tines 8 protrude from the base area 7. The connecting part 10 is in relation to the base area 7 The connecting fork 10 is opposite to the fork tines 8 from the base 7. The connecting part 10 is fastened to the component 3 by means of a screw 5.

The printed circuit board 2 may be a high-current printed circuit board. For this purpose, solid copper elements can be embedded in the printed circuit board 2 for conducting a high current. Due to the high flowing current, a certain amount of heat is generated in the switching contact 3. The heat flow 9 can be diverted at least in part via the fork-shaped element 4 onto the printed circuit board 2 and from there, for example via heat sinks not further shown. The fork-shaped element 4 can be used as an adapter part in an assembly 1 for the

Battery system of a motor vehicle can be used. However, the invention is not limited to the described and illustrated embodiment. Rather, it also encompasses all expert developments within the scope of the invention defined by the claims. Thus, the fork-shaped element 4 according to the invention can also be used in household appliances, audio devices, video devices, telecommunication devices or the like, in order to electrically and / or mechanically connect two subassemblies in an assembly.

Reference Number List:: (electrical) assembly

: first subassembly / circuit board

: second subassembly / component / switching contact: adapter part / forked element

: Screw

: Contact point

: Floor space

: Forks

: Heat flow

0: connection part

Claims

Patent claims

1. assembly comprising a first subassembly (2) and a second subassembly

(3), wherein the first subassembly (2) with the second subassembly (3) in electrical and / or mechanical connection, characterized in that an adapter part (4) for electrical and / or mechanical connection of the first subassembly (2) the second subassembly (3) between the first subassembly (2) and the second

Subassembly (3) is arranged, in particular such that between the two

Sub-assemblies (2, 3) acting forces are absorbed by the adapter part (4).

2. An assembly according to claim 1, characterized in that it is in the first subassembly (2) is a circuit board, that it is preferably in the second subassembly (3) is a component, in particular an electromechanical

Component, such as an electrical switching contact, an electrical switch, a relay o. The like., Acts, and that it is further preferably in the assembly (1) is an electrical assembly, wherein the component (3) with the circuit board (2) is in electrical and / or mechanical connection.

3. Assembly according to claim 1 or 2, characterized in that it is the adapter part (4) is a fork-shaped element.

4. Assembly according to claim 1, 2 or 3, characterized in that the adapter part

(4) with the second subassembly (3), in particular the fork-shaped element (4) with the component (3), screwed, vernietbar, weldable, soldered o. The like. Is.

5. Assembly according to one of claims 1 to 4, characterized in that the adapter part (4) with the first subassembly (2), in particular the fork-shaped element (4) to the circuit board (2), can be soldered, and that preferably electrical contact points (6) are provided on the circuit board (2) for the soldering.

6. Assembly according to one of claims 1 to 5, characterized in that it is in the circuit board (2) to a high-current circuit board, in particular with in the circuit board

(2) embedded solid copper elements for conducting a high current.

7. An assembly according to any one of claims 1 to 6, characterized in that the fork-shaped element (4) has a base (7) and from the base (7) outgoing fork tines (8) that preferably the forks (8) in approximately perpendicular protrude from the base (7) that further preferably the base (7) in about

is configured rectangular, wherein the forks (8) on the sides of

Rectangular base (7) are arranged, and that more preferably the forks (8) are attached to the electrical contact points (6).

8. Assembly according to one of claims 1 to 7, characterized in that the base surface (7) of the fork-shaped element (4) on the second subassembly (3), in particular on the component (3), is attached.

9. Assembly according to one of claims 1 to 8, characterized in that from the base surface (7) a connecting part (10) protrudes, in particular the forks (8) with respect to the base (7) opposite, and that preferably

Connecting part (10) on the second sub-assembly (3), in particular on the component

(3), is attached.

10. Assembly according to one of claims 1 to 9, characterized in that the fork-shaped element (4) made of sheet metal is produced as a stamped and bent part.