CN215980717U - Automobile, electric drive assembly and shell component with vibration suppression structure - Google Patents

Abstract

The embodiment of the application discloses car, electric drive assembly and have casing component of restraining vibration structure. The embodiment of the application can be applied to shell components needing vibration reduction and noise reduction in different application scenes, and particularly, the surface of the shell body is provided with the concave part, the additional plate is overlapped on the outer side of the concave part, and the additional plate is fixedly connected with the shell body to form the air gap layer. When the shell component is excited to vibrate, the additional plate also vibrates, air in the air gap layer between the shell component and the additional plate is extruded and flows back and forth at high speed, and gas molecules in the air generate friction, so that vibration energy can be effectively lost, and vibration and sound radiation of the shell component are reduced. In practical application, based on damping generated by vibration coupling of the additional plate, the shell body and air, shell vibration energy can be effectively dissipated, and vibration and sound radiation of shell components can be effectively reduced. And has the characteristic of low cost.

Description

Automobile, electric drive assembly and shell component with vibration suppression structure

Technical Field

The embodiment of the application relates to the technical field of automobile vibration reduction, in particular to an automobile, an electric drive assembly and a shell component with a vibration suppression structure.

Background

NVH (Noise, Vibration, Harshness, Noise, Vibration and Harshness) is a key technical index of the new energy automobile, and an electric drive assembly of the NVH is a main source of NVH problems of the new energy automobile. Different from the traditional fuel engine assembly, although the noise value (dB) is reduced when the electric drive assembly operates, the middle-high frequency noise generated by the electric drive assembly is uncomfortable to the subjective feeling of people. When the user is in the noise environment for a long time, the user can have physiological reactions such as distraction, dysphoria and discomfort.

The main excitation source of the NVH of the electric drive assembly comes from the motor and the speed reducer, and dynamic excitation force generated when the motor and the speed reducer operate is transmitted to the surface shell from the interior of the assembly through the structure, so that the shell generates forced vibration to radiate noise outwards.

According to the existing typical vibration reduction and noise reduction processing scheme, a boss and a reinforcing rib are arranged on a shell of an electric drive controller, and the inherent frequency of the shell is improved by enhancing the strength and rigidity of the shell so as to reduce vibration and reduce noise. Because the exciting force that the power assembly received is the broadband, although the natural frequency of casing can be promoted to the casing strengthening rib, the noise peak still exists, also the frequency of noise peak has taken place the skew, can't thoroughly eliminate the casing resonance, consequently can not effectively avoid the influence that the noise produced. In addition, the bosses and the reinforcing ribs are arranged on the shell, so that the weight of the shell is increased, and the cost is also improved.

SUMMERY OF THE UTILITY MODEL

The embodiment of the application provides a car, electric drive assembly and have shell component who suppresses the vibration structure, but through structural optimization consumptive vibration energy, effectively reduce shell component's vibration and acoustic radiation.

The first aspect of the embodiment of the application provides a shell component with a vibration suppression structure, which comprises a shell body and an additional plate, wherein the surface of the shell body is provided with an inner concave part, and the additional plate is overlapped on the outer side of the inner concave part and is fixedly connected with the shell body to form an air gap layer. When the shell component is excited to vibrate, the additional plate also vibrates, air in the air gap layer between the shell component and the additional plate is extruded and flows back and forth at high speed, and gas molecules in the air generate friction, so that vibration energy can be effectively lost, and vibration and sound radiation of the shell component are reduced. So set up, but this embodiment has formed the suppression vibration structure on the casing component, through the damping that additional plate, casing body and air vibration coupling produced, effectively dissipated casing vibration energy, provide good technical guarantee for reducing casing vibration and noise radiation thereof. Meanwhile, compared with the traditional structure that the boss and the reinforcing ribs are arranged on the shell, the shell has the advantages that the cost of raw materials is low, the weight and the occupied space are reduced, and the shell has excellent reliability and strong durability; the process is easy to realize, and the manufacturing cost can be further controlled.

Illustratively, the plate edge of the additional plate and the shell body are fixed continuously or discontinuously on the whole circumference.

In specific application, the two can be fixed by means of adhesion, welding, riveting or screw connection.

Based on the first aspect, an embodiment of the present application further provides a first implementation manner of the first aspect: the periphery of the concave part is provided with a positioning step matched with the additional plate, namely a positioning structure of the additional plate is provided, and the plate edge of the additional plate can be abutted and fixed on the positioning step. During assembly, the positioning step forms the prepositioning of the additional plate, so that the reliable fixation of the additional plate can be ensured, the assembly can be completed quickly, and the assembly manufacturability is better.

Based on the first aspect or the first implementation manner of the first aspect, embodiments of the present application further provide a second implementation manner of the first aspect: the additional plate is aligned with the surface of the shell body, that is, the surface of the additional plate can be flush with the surface of the shell body or smoothly transited after the vibration suppressing structure is added based on the basic structure of the shell member. With this arrangement, the arrangement of the vibration suppressing structure does not change the outer contour of the housing member while obtaining a good vibration damping performance, and the original assembly relationship of the housing member is not affected.

In a specific application, the thickness of the shell body can be 2 mm-5 mm, the thickness of the additional plate can be 0.2 mm-1.5 mm, and the thickness of the air gap layer can be 0.1 mm-1 mm.

Based on the first aspect, or the first implementation manner of the first aspect, or the second implementation manner of the first aspect, the present application provides an example of a third implementation manner of the first aspect: the ratio of the thicknesses of the additional plate and the shell body opposite to each other in the thickness direction is as follows: 1/10-1/2. Thus, the additional plate which synchronously vibrates with the shell body can extrude air in the air gap layer to form damping with obvious damping effect.

Based on the first aspect, or the first implementation manner of the first aspect, or the second implementation manner of the first aspect, or the third implementation manner of the first aspect, the examples of the present application further provide a fourth implementation manner of the first aspect: the additional plate is provided with a micro-channel which runs through the plate body. So set up, when the air forms reciprocal high-speed flow trend in the air gap layer, the microchannel on the additional plate body can be passed in and out to the air, and the gas molecule is at this in-process friction consumption energy, can further improve damping effect.

Illustratively, the flow area of the microchannels is 0.5% to 5% of the surface area of the additional plate, in other words, the open area of the microchannels in the additional plate is 0.5% to 5%.

In some embodiments, the microchannel may be a plurality of elongated slots spaced apart from each other, and the slot width of the elongated slots is no greater than 1 mm.

In other embodiments, the microchannel may be a plurality of holes spaced apart and having a diameter of no greater than 1 mm.

Based on the first aspect, or the first implementation manner of the first aspect, or the second implementation manner of the first aspect, or the third implementation manner of the first aspect, or the fourth implementation manner of the first aspect, the examples of the present application further provide a fifth implementation manner of the first aspect: the additional plate is made of the same material as the shell body, and the natural frequency of the additional plate is consistent with that of the shell body. Therefore, the vibration coupling effect between the additional plate and the shell body is enhanced, and the vibration energy of the shell can be transmitted to the additional plate to the maximum extent, so that the damping effect can be further improved.

For example, the shell body and the additional plate can be both made of aluminum materials or other metal materials;

in a specific application, the materials of the housing body and the additional plate may not be completely identical, and preferably, the specific materials are selected such that the natural frequency deviation of the additional plate from the housing body does not exceed 10%, and a relatively good damping effect can be obtained as well.

Based on the first aspect, or the first implementation manner of the first aspect, or the second implementation manner of the first aspect, or the third implementation manner of the first aspect, or the fourth implementation manner of the first aspect, or the fifth implementation manner of the first aspect, the examples of the present application further provide a sixth implementation manner of the first aspect: the surface of the additional plate is covered with a damping layer, a sound absorption layer and/or a sound insulation layer. The damping layer can absorb vibration energy of the additional plate, on the basis of reducing vibration of the shell, the vibration amplitude of the additional plate can be prevented from being too large, collision between the additional plate and the shell body can be avoided, and secondary noise is avoided.

Illustratively, the damping layer covers the plate surface of the additional plate wholly or partially.

In specific application, the damping layer can be made of a material with a damping coefficient of 0.1 or more, specifically melamine, a high molecular polymer or a high molecular resin, and the like, for example, but not limited to, rubber or asphalt is used. The sound absorbing layer may be selected from materials having a sound absorption coefficient greater than 0.2, such as, but not limited to, mineral wool, felt, fiberboard or porous gypsum board. The sound insulation layer can be made of a material with a transmission coefficient of 0.01-0.2.

Based on the first aspect, or the first implementation manner of the first aspect, or the second implementation manner of the first aspect, or the third implementation manner of the first aspect, or the fourth implementation manner of the first aspect, or the fifth implementation manner of the first aspect, or the sixth implementation manner of the first aspect, the examples of the present application further provide a seventh implementation manner of the first aspect: the plate surface of the additional plate is covered with a reinforcing layer, and the material rigidity of the reinforcing layer is higher than that of the additional plate. Based on the arrangement of the reinforcing layer, the integral rigidity of the additional plate is enhanced, so that when the vibration energy generated on the additional plate is larger, the phenomenon that the plate body collides with the shell due to overlarge amplitude can be avoided.

For example, the elastic modulus of the material of the reinforcing layer may be two times or more than that of the material of the shell body with the same thickness. In particular applications, a reinforced film may be used.

Based on the first aspect, or the first implementation manner of the first aspect, or the second implementation manner of the first aspect, or the third implementation manner of the first aspect, or the fourth implementation manner of the first aspect, or the fifth implementation manner of the first aspect, or the sixth implementation manner of the first aspect, or the seventh implementation manner of the first aspect, the present application also provides an eighth implementation manner of the first aspect: for the case that the vibration of a plurality of positions of the shell component is larger through testing/simulation, the matched additional plates and the inner concave parts can be arranged into a plurality of groups and are respectively arranged at a plurality of vibration region positions on the shell component, namely, at the position of the vibration region of the shell component. Compared with a mode that a group of additional plates and an inner concave part cover a plurality of large vibration area positions, the mode that the additional plates and the inner concave part are respectively and independently configured can avoid the collision of the overlarge amplitude of the plate body and the shell on the basis of achieving the purposes of vibration reduction and noise reduction.

Based on a second aspect, embodiments of the present application provide an electric drive assembly, a housing of which employs a housing member having a vibration suppressing structure as described above.

For example, the present invention may be applied to a motor controller housing, a motor housing, a reducer housing, an OBC (on-board charger) housing, a PDU (power distribution unit) housing, etc. of an electric drive assembly.

Based on the third aspect, the embodiment of the application provides an automobile, which comprises a part with a shell, and the shell of the part adopts the shell component with the vibration inhibiting structure.

In a specific application, the vibration suppression structure can also be applied to other vibration noise parts of the automobile, such as but not limited to a compressor and a bracket thereof.

Drawings

FIG. 1 is a schematic view of an embodiment of a housing member with vibration suppressing structure according to an embodiment of the present application;

FIG. 2 is a view taken along line A of FIG. 1;

FIG. 3 is a partial sectional view B-B of FIG. 2;

FIG. 4 is a schematic structural view of a case according to a comparative example;

FIG. 5 is a graph comparing the noise test results of the embodiment shown in FIG. 1 and the comparative example at different rotation speeds;

FIG. 6 is a schematic view of another embodiment of a housing member with vibration suppressing structure according to an embodiment of the present application;

FIG. 7 is a schematic view of another embodiment of a housing member with vibration suppressing structure according to the embodiment of the present application;

FIG. 8 is a schematic view of a housing member with vibration suppressing structure according to an embodiment of the present application;

FIG. 9 is a partial cross-sectional view of another embodiment of a housing member having vibration-damping structure according to an embodiment of the present application;

FIG. 10 is a schematic view of a housing member with vibration suppressing structure according to an embodiment of the present application;

FIG. 11 is a schematic view of an embodiment of an electric drive assembly according to an embodiment of the present application.

Detailed Description

The embodiment of the application provides a shell component, utilizes the suppression vibration structure that configuration optimization formed, can dissipate the vibration energy, reduces shell component's vibration and acoustic radiation to effectively promote user experience.

Without loss of generality, the embodiment takes the motor controller housing 10 of the electric drive assembly shown in the drawing as a description main body, and details of a housing component scheme with a vibration suppression structure in the embodiment of the application are described. It should be understood that the functional structure of the motor controller housing and the connection manner of the motor controller housing and the related components are not the core invention point of the present application, and do not substantially limit the implementation of the vibration suppressing structure claimed in the present application.

Example one

As shown in fig. 1, the figure is a schematic view of a housing member with a vibration suppressing structure according to the present embodiment.

The case member 10 has an inner recess 11 formed in the case body 1, and the inner recess 11 is recessed from the surface of the case body 1 toward a solid portion thereof. Accordingly, the outer side of the concave portion 11 is overlapped with the additional plate 2 and is fixedly connected with the housing body 1 to form an air gap layer a. Referring to fig. 2 and 3 together, fig. 2 is a view taken along direction a of fig. 1, and fig. 3 is a cross-sectional view taken along line B-B of fig. 2.

When the shell component 1 is excited to vibrate, the additional plate 2 vibrates along with the shell component, air in the air gap layer a between the additional plate and the shell component is extruded and flows back and forth at a high speed, gas molecules in the air generate friction to effectively lose vibration energy, namely a structure capable of inhibiting vibration is formed on the shell component 10, the shell vibration energy is effectively dissipated through damping generated by vibration coupling of the additional plate 2, the shell body 1 and the air, and vibration and sound radiation of the shell component 10 are reduced.

In this embodiment, the additional plate 2 may be fixedly connected to the housing body 1 by a welding process, and as shown in fig. 2, a circumferential weld 3 is formed along the plate edge of the additional plate 2 after welding.

In other specific implementations, the additional plate 2 may be fixed to the housing body 1 by an adhesive process, riveting or screwing, and in actual selection, the material characteristics and the thickness of the additional plate need to be selected according to the factors. It should be understood that it is within the scope of the claimed application as long as a reliable air gap layer can be formed.

It should be noted that the shape of the additional plate 2 can be selected according to the actual vibration region of the housing member 1, such as but not limited to the square additional plate 2 shown in the figure. In practice, it may also be a circular additional plate or other irregular and irregular additional plate (not shown in the figure).

In order to improve the assembly manufacturability of the present embodiment, a positioning step 12 may be disposed on the outer periphery of the inner concave portion 11, the positioning step 12 is adapted to the additional plate 2, and as shown in fig. 3, the plate edge of the additional plate 2 is abutted against and fixed to the positioning step 12. During assembly, the positioning step 12 provides the function of pre-positioning the additional plate 2, in other words, the additional plate 2 is firstly placed on the positioning step 12 and then is welded and fixed, and the assembly can be quickly completed without a positioning auxiliary tool. The positioning step 12 also ensures a reliable fixing of the additional plate 2.

Further, in order to maintain the original outer contour of the housing 10 provided with the vibration suppressing structure, the original assembly relationship of the housing members is not affected. As shown in fig. 3, the additional plate 2 is preferably aligned with the surface of the case body 1, that is, the surface of the additional plate 2 can be flush with the surface of the case body 1 without changing the external profile of the case member after the vibration suppressing structure is added based on the basic structure of the case member 1.

Of course, for a non-flat housing surface, the surface of the additional plate 2 and the surface of the housing body 1 may remain aligned as well, with a smooth transition at the location of the connection.

In a specific application, the thickness of the shell body 1 can be 2 mm-5 mm, the thickness of the additional plate 2 can be 0.2 mm-1.5 mm, and the thickness of the air gap layer a can be 0.1 mm-1 mm. It will be understood that for the shell member, the main structure is mostly thin-walled, and "thickness" herein refers to the structural dimension in the same direction as the thickness of the thin wall.

The ratio of the thicknesses of the additional plate 2 and the case body 1 facing each other in the thickness direction is: 1/10-1/2. In other words, the additional plate 2 and the housing body 1 facing each other in the thickness direction refer to the relative positions of the additional plate 2 and the housing body 1 on both sides of the air gap layer where the air flows back and forth at a high speed, and the corresponding positions may be corresponding position points or corresponding position areas. With the arrangement, the additional plate 2 which synchronously vibrates with the shell body 1 can extrude air in the air gap layer a to form damping with obvious damping effect.

In addition, in order to form a strong vibration coupling effect between the additional plate 2 and the housing body 1, in the present embodiment, the additional plate 2 is made of the same material as the housing body 1. In this way, the natural frequency of the additional plate 2 is kept consistent with the natural frequency of the case body 1, and the vibration energy of the case body 1 can be transmitted to the additional plate 2 to the maximum, thereby further improving the damping effect.

In a specific implementation, the housing body 1 and the additional plate 1 can be made of aluminum materials. Or other metal materials. It can be understood that the shell body and the additional plate can be made of different materials to meet the design function requirement of the product, preferably, the actual natural frequency deviation of the additional plate 2 and the shell body 1 is not more than 10%, and relatively good damping effect can be obtained.

The present invention will be specifically described below by way of example examples and comparative examples on the basis of comparison with a motor controller of the same configuration-related structure.

(1) Parameters of the embodiments shown in fig. 1, 2 and 3: the thickness of the shell body 1 is 3 mm; the thickness of the additional plate 2 is 0.6mm, and the length multiplied by the width of the additional plate 2 is 14mm multiplied by 14 mm; the thickness of the air gap layer a is 0.3 mm; the shell body 1 and the additional plate 2 are made of aluminum; the total weight was 800 grams.

(2) Parameters of the comparative example as shown in fig. 4: the thickness of the shell 10 'is 3mm, the material is aluminum, and a reinforcing rib 101' is arranged; the total weight was 1090 grams.

Referring to fig. 5, a comparison graph of noise test effects of the two schemes at different rotation speeds is shown, wherein a dotted line represents the noise test effect of the embodiment, and a solid line represents the noise test effect of the comparative example. Through test comparison, the embodiment of the application has obvious noise reduction effect in a full-speed section (500rpm-12000rpm), and the maximum value of the noise peak at a position 1m above the shell is reduced by 3.8dB (A). Meanwhile, on the basis that the thicknesses of the two shell bodies are the same, the weight of the embodiment of the application is reduced by 290 g compared with that of the comparative example, and the material cost can be reduced by 26.6%.

In the case member with the vibration suppressing structure described in the first embodiment of the present application, the outer periphery of the additional plate 2 and the case body 1 are welded together to form a closed air gap layer. It should be noted that, on the premise of ensuring the connection strength between the two and not introducing secondary collision noise, an air channel may also be formed between the plate edge of the additional plate 2 and the housing body 1, which is described below in connection with two embodiments respectively for example.

Example two

Referring to fig. 6, a schematic diagram of a housing member with a vibration suppressing structure according to the present embodiment is shown.

The difference from the first embodiment is that in the present embodiment, two welding seams 3' are formed by welding the opposite side plate edges of the additional plate 2 with the shell body 1, and the other two side plate edges are not welded to form a non-completely closed air gap layer.

When the air in the air gap layer forms a reciprocating high-speed flow trend, the air can pass in and out through the two unwelded side plate edges of the additional plate 2, and the gas molecules rub in the process to consume energy, so that the damping effect can be improved.

Other components and connection relationships are the same as those in the first embodiment, and thus are not described again.

EXAMPLE III

Referring to fig. 7, a schematic diagram of a housing member with a vibration suppressing structure according to the present embodiment is shown.

The difference from the previous embodiment is that the outer peripheral plate edge of the additional plate 2 is intermittently welded with the housing body 1 in the present embodiment to form an intermittent weld 3 ″ to form a non-completely closed air gap layer. Also, air can pass in and out through the additional plate 2 at the non-welded positions along the plate edges, in which process the gas molecules are rubbed to consume energy.

Other configurations and connection relationships may be the same as those in the first and second embodiments, and thus are not described again.

In addition, based on the design mechanism of air friction energy consumption, the air channel can also be formed on the plate body of the additional plate 2, and specifically, the additional plate 1 can be provided with a micro channel penetrating through the plate body. The micro-channel is an air channel which can meet the function of extruding air in the air gap layer a and enabling the air to flow back and forth at high speed, and can further form friction energy consumption due to relatively small through-flow section. Such as but not limited to the specific implementations described in the following examples.

Example four

Referring to fig. 8, a schematic diagram of a housing member with a vibration suppressing structure according to the present embodiment is shown.

In this embodiment, the additional plate 2 is provided with a long groove 21 and a hole 22 penetrating through the plate body. That is, in the present embodiment, the microchannel may include a plurality of long grooves 21 arranged at intervals and a plurality of holes 22 arranged at intervals, and the width of the long groove 21 is not greater than 1mm, and preferably may be 0.1mm to 1 mm. The diameter of the holes 22 is not more than 1mm, and preferably may be 0.1mm to 1 mm.

It is understood that the number of the long slots 21 and the holes 22 is not limited to the number shown in the figures, and the actual number and size of the long slots 21 and the holes 22 can be selected according to different shell members to be subjected to vibration damping treatment. In addition, the elongated slot 21 or the hole 22 can be selected as the micro-channel only, so that the damping effect is further improved.

Preferably, the flow area of the microchannels is 0.5% to 5% of the surface area of the additional plate 2, i.e. the open area of the microchannels in the additional plate 2 is 0.5% to 5%.

Other configurations and connections can be the same as those of the previous embodiments, and are not described again.

EXAMPLE five

Referring to fig. 9, a partial cross-sectional view of the housing member with vibration suppressing structure of the present embodiment is shown.

In this embodiment, the plate surface of the additional plate 2 is covered with the damping layer 4. This damping layer 4 set up the vibration energy that can absorb additional board 2, on the basis that reduces the casing vibration, can prevent that the vibration range of additional board 2 is too big, can avoid producing the collision between additional board 2 and casing body 1, avoids secondary noise.

Of course, the damping layer 4 may cover the plate surface of the additional plate 2 entirely or partially. In specific applications, the damping layer 4 may be made of a material having a damping coefficient greater than or equal to 0.1, specifically melamine, a high molecular polymer, or a high molecular resin, for example, but not limited to, rubber or asphalt.

As shown in fig. 9, the damping layer 4 is located on the outer plate surface of the additional plate 2 with respect to the air gap layer a. In fact, the damping layer may also be located on the inner surface of the additional plate 2, and may also effectively absorb the vibration energy of the additional plate 2.

Other configurations and connections can be the same as those of the previous embodiments, and are not described again.

EXAMPLE six

In this embodiment, the surface of the additional plate 2 may be covered with a sound absorbing layer and/or a sound insulating layer (not shown). Wherein the sound absorption layer can be selected from materials with sound absorption coefficient greater than 0.2, such as, but not limited to, mineral wool, felt, fiber board, or porous gypsum board. The sound insulation layer can be made of a material with a transmission coefficient of 0.01-0.2.

Other configurations and connections can be the same as those of the previous embodiments, and are not described again.

EXAMPLE seven

In this embodiment, the plate surface of the additional plate 2 is covered with a reinforcing layer (not shown in the figure), and the material rigidity of the reinforcing layer is higher than that of the additional plate. Based on the setting of strengthening layer for the global rigidity of additional plate 2 can strengthen, like this, when the vibration energy that produces on additional plate 2 is great, can avoid its plate body amplitude too big and casing body 1 collision.

Preferably, the elastic modulus of the material of the reinforcing layer may be two times or more of that of the material of the case body 1 having the same thickness. In particular applications, a reinforced film may be used. Specifically, the reinforcing film is formed by compounding a backing (such as fiber reinforced cloth or aluminum foil) and a sheet-like adhesive (which is a main material), is formed according to the set shape and size requirements, and can be stably adhered to the surface of the additional plate 2 after being heated and cured, so that the reinforcing film plays a role in reinforcing the plate.

Other configurations and connections can be the same as those of the previous embodiments, and are not described again.

Example eight

Referring to fig. 10, a schematic diagram of a housing member with a vibration suppressing structure according to the present embodiment is shown.

For a specific product shell, when the vibration of a plurality of positions of the shell component is larger through testing/simulation, an inner concave part can be arranged on the shell body at each position with larger vibration, and the additional plates 2 are respectively configured. In other words, in the case of a plurality of positions where the vibration is large, the additional plate 2 and the concave portion 11 may be provided in a plurality of sets, respectively disposed at the corresponding large vibration region positions on the case member 1. As shown in fig. 10, the vibration suppressing structure provided at two positions where the vibration is excessively large is preferably illustrated.

It should be noted that, the determination of the vibration magnitude is related to the amplitude, frequency, phase and energy of the characteristic vibration, and in the present embodiment, the large vibration position of the vibration suppressing structure is determined based on the overall design requirement of vibration damping and noise reduction. Here, "large vibration" and "large vibration" refer to a position region in which the vibration value represented by the above-described vibration elements in combination is relatively large and vibration needs to be suppressed. Specifically, for the housing member without a product, a position where the vibration is large can be determined through testing/simulation and used as a selection basis.

For two or more regions with larger vibrations, it is theoretically possible to use an additional plate and an inner recess to cover the positions of the large vibration regions (not shown). Compared with the mode of adopting one additional plate, the mode of independent configuration respectively of the embodiment can avoid the collision of the excessive amplitude of the plate body of the additional plate with the shell body on the basis of achieving the purposes of vibration reduction and noise reduction.

Other configurations and connections can be the same as those of the previous embodiments, and are not described again.

Example nine

Referring to fig. 11, a schematic diagram of the electric drive assembly of the present embodiment is shown.

The motor controller housing 10 of the electric drive assembly employs a housing member having a vibration-suppressing structure as described in the foregoing fig. 1 to 3, and fig. 6 to 10. As shown in the drawings, the electric drive assembly may be a motor housing, a speed reducer housing, an OBC (on-board charger) housing, a PDU (power distribution unit) housing, or the like, or may be a vibration suppressing structure using the aforementioned housing members.

It is to be understood that other functions of the electric drive assembly constitute non-central inventive points of the present application and are not described in detail herein.

Based on the housing member with the vibration suppressing structure described in the foregoing embodiments, embodiments of the present application also provide an automobile including a component having a housing that employs the housing member with the vibration suppressing structure as described above. The automobile can be a new energy automobile which is provided with driving force by an electric driving assembly, and can also be a fuel automobile which is provided with driving force by an engine.

Similarly, other functions of the vehicle constitute non-core points of the invention, and thus are not described herein.

It is understood that, for a new energy automobile, besides the electric drive assembly specifically described in the ninth embodiment, the vibration suppressing structure may also be applied to other vibration noise-intensive parts of an electric automobile, such as, but not limited to, a compressor and a bracket thereof.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that it is obvious to those skilled in the art that various modifications and improvements can be made without departing from the principle of the present invention, and these modifications and improvements should also be considered as the protection scope of the present invention.

Claims (16)

1. The shell component with the vibration inhibiting structure is characterized by comprising a shell body and an additional plate, wherein the surface of the shell body is provided with an inner concave part, and the additional plate is overlapped on the outer side of the inner concave part and is fixedly connected with the shell body to form an air gap layer.

2. The case member with a vibration suppressing structure as recited in claim 1, wherein an outer periphery of said concave portion has a positioning step fitted with said additional plate, and a plate edge of said additional plate is fixed to said positioning step in an abutting manner.

3. The case member with a vibration suppressing structure as claimed in claim 2, wherein the plate edge of said additional plate is fixed to said case body continuously or intermittently over the entire circumference.

4. A housing member having a vibration suppressing structure according to claim 2 or 3, wherein said additional plate is aligned with a surface of said housing body.

5. The case member having a vibration suppressing structure according to any one of claims 1 to 4, wherein the thickness of the case body is 2mm to 5mm, the thickness of the additional plate is 0.2mm to 1.5mm, and the thickness of the air gap layer is 0.1mm to 1 mm.

6. The case member with a vibration suppressing structure as recited in claim 5, wherein a ratio of a thickness of said additional plate opposed in a thickness direction to said case body is: 1/10-1/2.

7. The case member with a vibration suppressing structure as recited in any one of claims 1 to 3, wherein said additional plate is provided with micro-channels penetrating the plate body.

8. The housing member with a vibration suppressing structure as recited in claim 7, wherein said microchannel is a plurality of elongated slots arranged at intervals, and a slot width of said elongated slots is not more than 1 mm.

9. The housing member with a vibration suppressing structure as recited in claim 7, wherein said micro channel is a plurality of holes arranged at intervals, and a diameter of said holes is not more than 1 mm.

10. The housing member with a vibration suppressing structure as recited in any one of claims 7 to 9, wherein a flow area of said micro channel occupies 0.5% to 5% of a surface area of said additional plate.

11. The case member with a vibration suppressing structure as recited in any one of claims 1 to 3, wherein said additional plate is made of the same material as said case body.

12. A shell member having a vibration suppressing structure according to any one of claims 1 to 3, wherein a plate face of said additional plate is covered with a damping layer, a sound absorbing layer and/or a sound insulating layer.

13. A housing member having a vibration suppressing structure according to any one of claims 1 to 3, wherein a plate face of the additional plate is covered with a reinforcing layer having a material rigidity higher than that of the additional plate.

14. The case member with a vibration suppressing structure as recited in any one of claims 1 to 3, wherein the additional plates and the concave portions fitted are provided in plural sets and arranged at plural vibration region positions on the case member, respectively.

15. An electric drive assembly, wherein a housing of the electric drive assembly employs the housing member with a vibration suppressing structure of any one of claims 1 to 14.

16. An automobile characterized by comprising a component having a housing employing the housing member having a vibration suppressing structure according to any one of claims 1 to 14.

Images