DE102018104115A1 - Housing for a component of an electric drive - Google Patents

Abstract

Housing for a component of an electric drive, wherein the housing has a housing side with an annular recess and further recesses extending from the annular recess.

Description

The invention relates to a housing for a component of an electric drive.

State of the art

Electric drives are well known and are increasingly being used for propulsion of vehicles.

The electric drives require additional electronic components that ensure the control or power supply of the electric drive.

In order to improve the EMC properties of the electronic component, these are housed in metal housings. However, the metal housings tend to absorb vibrations from, for example, the electric motor or the drive train. Combined with the cabinet's natural frequency, this produces loud resonance sounds that negatively impact the vehicle's Noise Vibration Harshness (NVH).

Task and solution

The object of the present invention is to improve a housing for a component of an electric drive in such a way that possible operating noises are reduced.

The problem is solved by a housing according to the independent claim. Further advantageous embodiments of the invention are the subject of the dependent claims.

The housing according to the invention for a component of an electric drive comprises a housing side with an annular recess, wherein at least one further recess extends from the annular recess.

Advantageously, the annular recess with the outgoing therefrom further depression can change the resonant frequency of the housing side and thereby suppress vibrations that would otherwise have tried disturbing noises.

Preferably, the housing side may have at least three corners and the recesses extending from the annular recess extend in the direction of the corners.

Advantageously, the depressions can increase the rigidity of the housing side up to the corners and suppress further interference noises.

In a preferred embodiment of the invention, the housing side may have at least one further recess which begins at the annular recess and lies between at least two recesses in the direction of the corners.

Advantageously, the further recesses allow a division of the housing side in equal sections, which thus have advantageous natural frequencies and further reduce the disturbing noise.

More preferably, at least six, in particular eight, depressions can depart from the annular recess.

In an advantageous manner, a uniform distribution of the sections over the surface of the housing side can be achieved thereby.

In a further embodiment of the invention, the housing side may be formed as a housing cover.

Advantageously, such a maintenance of the components in the housing can be done easily.

Preferably, the housing side may have an edge with a seal. Advantageously, so that the housing can be sealed waterproof.

More preferably, the housing side may have a fold. Advantageously, so that the housing can be easily closed.

Preferably, the fold may have a plurality of holes. Advantageously, so that the housing can be securely closed, for example with screws.

In a further embodiment of the invention, an inverter can be arranged in the housing. Advantageously, the housing prevents noise during operation of the inverter.

According to the invention, a vehicle has a housing according to a preferred embodiment.

list of figures

• 1 shows a side of a housing.
• 2 shows the dimensions of a housing cover.
• 3 shows a cross section through the housing cover the 2 ,
• 4 shows a further cross section through the housing cover the 2 ,

In the 1 shown sidewall 3 of the housing 1 is as a housing cover 3 educated. In approximately the middle of the housing cover is an annular recess 5 starting from, similar to rays of a sun, depressions 7 in the direction of the corners 9 of the housing cover. Through the depressions 7 The surface of the housing cover is divided into several sections of approximately equal size 11 divided. At the edges of the housing cover is a fold 13 with a lot of holes 15 , Through these holes, the housing cover can be fastened to a housing, for example by means of screw connection.

In 2 is an embodiment of the housing cover 3 shown with dimensions. The lid 3 has an annular recess 5 and four wells 7 in the direction of the corners 9 on. In addition, there are two more wells on the lid, a division of the lid surface in approximately equal sections 11 to ensure. Furthermore, in 2 two cutting planes AA and BB drawn in the 3 and 4 are shown.

The cutting plane AA in 3 illustrates the depth of the depression 7 and also the ring 5 in relation to the fold 13 , The recess is therefore approximately as deep as the material is thick. Furthermore, the fold is greater than the depression. This ensures that the recess does not come into contact with electronic components in the housing.

In the 4 shown further sectional plane BB shows the fold 13 with the holes 15 , which allow a screw connection with the housing. Furthermore, the fold has an edge 17 on, putting a rubber seal between the lids 3 and the housing allows. In combination with the screw through the holes 15 is thus a watertight closure of the housing possible.

Claims (10)

Housing (1) for a component of an electric drive, wherein the housing (1) has a housing side (3) with an annular recess (5) and from the annular recess (5) outgoing further recesses (7). Housing (1) for a component of an electric drive according to Claim 1 in that the housing side (3) has at least three corners (9) and the recesses (7) which leave the annular recess (5) extend in the direction of the corners (9). Housing (1) for a component of an electric drive according to Claim 2 in that the housing side (3) has at least one further recess (10) which starts at the annular recess (5) and lies between at least two recesses (7, 8) in the direction of the corners (9). Housing (1) for a component of an electric drive according to one of the preceding claims, wherein depart from the annular recess (5) at least six, in particular eight, recesses. Housing (1) for a component of an electric drive according to one of the preceding claims, wherein the housing side (3) is designed as a housing cover. Housing (1) for a component of an electric drive according to one of the preceding claims, wherein the housing side (3) has an edge (17) with a seal. Housing (1) for a component of an electric drive according to one of the preceding claims, wherein the housing side (3) has a fold (13). Housing (1) for a component of an electric drive according to Claim 7 wherein the fold (13) has a plurality of holes (15). Housing (1) for a component of an electric drive according to one of the preceding claims, wherein an inverter is arranged in the housing (1). Vehicle with a housing (1) according to one of the preceding claims.

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