CN220629193U

CN220629193U - Inverter with a power supply

Info

Publication number: CN220629193U
Application number: CN202321656394.7U
Authority: CN
Inventors: 赵浦涵
Original assignee: FAW Group Corp
Current assignee: FAW Group Corp
Priority date: 2023-06-27
Filing date: 2023-06-27
Publication date: 2024-03-19
Anticipated expiration: 2033-06-27

Abstract

The utility model discloses an inverter, and belongs to the field of inverters. Wherein, this dc-to-ac converter includes: a main case; and the inverter cover plate is connected with the main box body through bolts, and is made by punching a shock-absorbing and noise-reducing composite layer. The utility model solves the technical problem of larger noise of the inverter in the related technology.

Description

Inverter with a power supply

Technical Field

The utility model relates to the field of inverters, in particular to an inverter.

Background

The noise and vibration characteristics of the electric automobile are one of important factors of automobile competitiveness, and as the sources of noise and vibration of the whole automobile, the vibration of the all-in-one electric drive assembly can be structurally decomposed into motor noise and inverter noise. From the current bench test, the electric drive noise existing at a low rotating speed of a certain motor is mainly inverter noise, and the vibration noise test shows that the maximum noise measuring point at the rotating speed is at the position of the top cover of the inverter. Through analysis, the corresponding low-frequency noise peak has the characteristics of high sound intensity, low frequency and serious howling, greatly influences user experience, and needs to be restrained.

In view of the above problems, no effective solution has been proposed at present.

Disclosure of Invention

The embodiment of the utility model provides an inverter, which at least solves the technical problem of larger noise of the inverter in the related art.

According to an aspect of an embodiment of the present utility model, there is provided a main casing; the inverter cover plate 10 is connected with the main box body through bolts 101, wherein the inverter cover plate is made by punching a shock-absorbing and noise-reducing composite layer.

Optionally, the middle part of the inverter cover plate 10 is an arch structure, and the area located in the arch structure is stamped to form the groove structure 103.

Optionally, a mounting table 104 is provided at the edge of the inverter cover plate 10, and at least one of a bolt mounting point and a positioning point is provided on the mounting table 104.

Optionally, the groove structure 103 is elliptical.

Optionally, at least one rib structure 102 is provided on the inverter cover 10, the rib structure 102 being located between the mounting mesa 104 and the groove structure 103.

Alternatively, the fin structure 102 includes two ends of different sizes.

Optionally, the ratio of the major axis to the minor axis of the groove structure 103 is 2:1.

Optionally, at least one of the plurality of fin structures 102 is disposed at a corner of the inverter cover 10 in the plurality of fin structures 102.

Optionally, a first end of the rib structure 102 is disposed towards the bolt mounting point, and a second end of the rib structure 102 is disposed extending towards the focal side of the groove structure 103, the surface area of the first end being larger than the surface area of the second end.

Optionally, the vibration/noise reduction composite layer includes: the steel sheet layer, the steel sheet layer is two, and two steel sheet layers set up relatively, and are provided with the polymer damping material layer between two steel sheet layers.

In an embodiment of the present utility model, an inverter includes: a main case; the inverter cover plate 10 is connected with the main box body through bolts 101, wherein the inverter cover plate is made of a shock-absorbing and noise-reducing composite layer by punching, and the inverter cover plate can be made of a shock-absorbing and noise-reducing composite material so as to reduce the vibration noise of the inverter, and further solve the technical problem of larger noise of the inverter in the related art.

Drawings

The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this application, illustrate embodiments of the utility model and together with the description serve to explain the utility model and do not constitute a limitation on the utility model. In the drawings:

fig. 1 is a schematic diagram of an inverter according to an embodiment of the utility model;

fig. 2 is a side view of an inverter cover plate according to an embodiment of the application.

Detailed Description

In order that those skilled in the art will better understand the present utility model, a technical solution in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in which it is apparent that the described embodiments are only some embodiments of the present utility model, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present utility model without making any inventive effort, shall fall within the scope of the present utility model.

When the following description refers to the accompanying drawings, the same numbers in different drawings refer to the same or similar elements, unless otherwise indicated. The implementations described in the following exemplary examples are not representative of all implementations consistent with the present application. Rather, they are merely examples of apparatus and methods consistent with some aspects of the present application as detailed in the accompanying claims.

It should be noted that the terms "first," "second," and the like in the description and claims of the present application and the above figures are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate such that embodiments of the present application described herein may be implemented in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus. Furthermore, in the description of the present application, unless otherwise indicated, "a plurality" means two or more. "and/or", describes an association relationship of an association object, and indicates that there may be three relationships, for example, a and/or B, and may indicate: a exists alone, A and B exist together, and B exists alone. The character "/" generally indicates that the context-dependent object is an "or" relationship.

According to an embodiment of the present utility model, there is provided an inverter.

Fig. 1 is a schematic view of an inverter cover plate according to an embodiment of the present utility model, and as shown in fig. 1, the inverter includes: a main case; the inverter cover plate 10 is connected with the main box body through bolts 101, wherein the inverter cover plate is made by punching a shock-absorbing and noise-reducing composite layer.

The inverter cover plate is an important part in the inverter structure and plays roles of sealing, protecting, interlocking, limiting, shielding, supporting, cooling, insulating and the like. The structure of the inverter cover plate not only affects the mechanical strength and the appearance modeling of the motor, but also affects the integral processing and assembly process of the inverter. The structure of the inverter not only affects the mechanical strength and the appearance modeling of the inverter, but also affects the processing and the whole assembly process of the inverter. The structure and assembly of the cover plate affect the modal characteristics of the inverter and are an important index for affecting the vibration noise of the inverter.

The existing inverter cover plate on the market mainly adopts a high-pressure casting aluminum alloy material process, is complex in structure, high in manufacturing difficulty, high in rejection rate and processing difficulty, needs a large number of reinforcing ribs to be arranged in design, is difficult in electric gap design, relatively low in balance, limited by materials and casting processes in first-order modes, and is lower in upper limit of modes in the same design space. Meanwhile, the high-pressure casting aluminum alloy process requires more matched environmental protection measures, the corresponding productivity is limited, the upper limit of the material yield is lower, and therefore other processes are required to be explored to replace the material of the inverter cover plate.

The number of the bolt mounting points may be 5n+1.

The first preset position may be an edge position of the inverter cover plate. The second preset position may be a focal position of the inverter cover plate.

The rib structure described above may also be referred to as a rib reinforcing structure.

The number of the convex rib structures can be n, the head of the reinforcing structure with the sequence number of a points to the 5a+1th bolt mounting point, the tail points to the center of the rectangular cover plate, and round corners are formed on the whole to enable the reinforcing structure to be smooth. If the long side of the large rectangle is 7b, the short axis direction of the stamping elliptical groove structure is consistent with the long side of the large rectangle, the length is b, the long axis direction of the stamping elliptical groove structure is consistent with the short side direction of the large rectangle, and the length is 2b. The camber of the cover plate is larger than 20 degrees.

Under the condition that the bolt mounting points are locked in the low-frequency vibration process, when the camber of the cover plate is greater than 20 degrees, a good vibration reduction effect can be formed. The stamping rib structure can prevent stable propagation of vibration waves, and the oval groove structure in the middle of the rectangular cover plate can play a role in absorbing vibration. Meanwhile, the novel vibration-damping and noise-reducing composite material is formed by a thin layer of high polymer material contained in a double-layer thin steel plate, and a high polymer damping material core layer can generate stretching deformation and compression deformation when the sandwich plate receives end cover vibration caused by unbalanced mechanical force, and part of mechanical energy in the vibration is converted into heat energy to be consumed, so that the purposes of vibration damping and noise reduction are achieved.

Optionally, the groove structure 103 is elliptical.

The groove structure described above may also be referred to as a stamped elliptical groove structure.

Alternatively, the fin structure 102 includes two ends of different sizes.

The rib structure may be in the form of a water drop.

The rib structure may be a water drop type, and the area of the first end of the water drop type may be larger than the area of the second end.

The utility model can take the damping and noise reducing composite material as a base material to carry out stamping processing and small amount of trimming processing, and the convex rib reinforcing structure is aligned with the corresponding bolt mounting point at the edge position of the cover plate; oval recess additional strengthening is on rectangular cover plate center, major axis: the short axis length ratio is 2:1.

the utility model relates to an inverter cover plate, which is an assembly part comprising a main box body, a driving plate, a control plate, a direct current/alternating current busbar, a cooling water pipe and the like. The top cover body of the inverter is in an arch rectangle, 21 bolt mounting points are arranged, and two locating pin mounting points are not included. The top cover body of the inverter is provided with 4 water drop-shaped convex rib reinforcing structures and 1 groove reinforcing structure, the number of bolt mounting points at the top cover body can be adjusted according to actual conditions, the number of the convex rib reinforcing structures can be adjusted according to actual conditions, and the number of the groove reinforcing structures can be adjusted according to actual conditions.

The rib reinforcing structures are distributed in a non-diagonal symmetrical mode. Different rib reinforcing structures are aligned with corresponding bolt mounting points at the edge positions of the cover plate; oval recess additional strengthening is in rectangular cover plate focus, major axis: the short axis length ratio is 2:1, the ratio here can be adjusted according to the actual situation.

The inverter disclosed by the utility model has the advantages of simple structure, simple structure of the inverter cover plate and easiness in stamping processing. The utility model adopts the concept of asymmetric structural design, adopts new materials and new technology to design the arrangement of the cover plate stamping groove structure and the stamping rib reinforcing structure, and has better effect on modifying or inhibiting the noise problem caused by the cover plate formants of the electric drive inverter under low frequency.

It should also be noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a article or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such article or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a commodity or device comprising such elements.

The foregoing is merely exemplary of the present application and is not intended to limit the present application. Various modifications and changes may be made to the present application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc. which are within the spirit and principles of the present application are intended to be included within the scope of the claims of the present application.

Claims

1. An inverter, comprising:

a main case;

and the inverter cover plate (10) is connected with the main box body through bolts (101), wherein the inverter cover plate is manufactured by punching a shock-absorbing and noise-reducing composite layer.

2. Inverter according to claim 1, characterized in that the middle part of the inverter cover plate (10) is of an arch structure, and that the area of the arch structure is stamped with a groove structure (103).

3. The inverter according to claim 2, characterized in that a mounting table (104) is provided at the edge of the inverter cover plate (10), and that at least one of a bolt mounting point and a positioning tip mounting point is provided on the mounting table (104).

4. An inverter according to claim 2, characterized in that the groove structure (103) is oval.

5. An inverter according to claim 3, characterized in that the inverter cover (10) is provided with at least one ridge structure (102), the ridge structure (102) being located between the mounting mesa (104) and the groove structure (103).

6. The inverter of claim 5, wherein the fin structure (102) comprises two ends of different sizes.

7. The inverter according to claim 4, characterized in that the ratio of the major axis and the minor axis of the groove structure (103) is 2:1.

8. The inverter according to claim 5, wherein the plurality of fin structures (102) is provided, and at least one of the plurality of fin structures (102) is provided at a corner of the inverter cover (10).

9. The inverter according to claim 5, wherein a first end of the bead structure (102) is arranged towards the bolt mounting point, a second end of the bead structure (102) is arranged extending towards a focal side of the groove structure (103), and a surface area of the first end is larger than a surface area of the second end.

10. The inverter of claim 1, wherein the vibration/noise reduction composite layer comprises:

the steel plate layer, the steel plate layer is two, two the steel plate layer sets up relatively, and two be provided with the polymer damping material layer between the steel plate layer.