CN112564431A - Noise optimization method for driving motor system for new energy automobile - Google Patents
Noise optimization method for driving motor system for new energy automobile Download PDFInfo
- Publication number
- CN112564431A CN112564431A CN202011471357.XA CN202011471357A CN112564431A CN 112564431 A CN112564431 A CN 112564431A CN 202011471357 A CN202011471357 A CN 202011471357A CN 112564431 A CN112564431 A CN 112564431A
- Authority
- CN
- China
- Prior art keywords
- end cover
- motor controller
- driving motor
- noise
- motor system
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K15/00—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines
- H02K15/0006—Disassembling, repairing or modifying dynamo-electric machines
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F30/00—Computer-aided design [CAD]
- G06F30/10—Geometric CAD
- G06F30/15—Vehicle, aircraft or watercraft design
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F30/00—Computer-aided design [CAD]
- G06F30/20—Design optimisation, verification or simulation
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K11/00—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection
- H02K11/30—Structural association with control circuits or drive circuits
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K15/00—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines
- H02K15/14—Casings; Enclosures; Supports
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/24—Casings; Enclosures; Supports specially adapted for suppression or reduction of noise or vibrations
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F2119/00—Details relating to the type or aim of the analysis or the optimisation
- G06F2119/10—Noise analysis or noise optimisation
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Power Engineering (AREA)
- Theoretical Computer Science (AREA)
- Geometry (AREA)
- General Physics & Mathematics (AREA)
- Evolutionary Computation (AREA)
- General Engineering & Computer Science (AREA)
- Computer Hardware Design (AREA)
- Manufacturing & Machinery (AREA)
- Automation & Control Theory (AREA)
- Aviation & Aerospace Engineering (AREA)
- Computational Mathematics (AREA)
- Mathematical Analysis (AREA)
- Mathematical Optimization (AREA)
- Pure & Applied Mathematics (AREA)
- Motor Or Generator Frames (AREA)
Abstract
The invention belongs to the technical field of noise optimization of new energy automobiles, and particularly relates to a noise optimization method of a driving motor system for a new energy automobile; acquiring a resonance area on an end cover of a motor controller; designing damping shock-absorbing gaskets according to a resonance area on an end cover of the motor controller, wherein the number and the shape of the damping shock-absorbing gaskets are designed according to the distribution condition of the resonance area, so that the damping shock-absorbing gaskets can completely cover the resonance area; sticking the designed damping cushion pad to the end cover of the motor controller according to the corresponding position; the resonance generated when the electromagnetic noise of the driving motor is transmitted to the end cover of the motor controller can be inhibited, and the noise of a driving motor system is effectively reduced.
Description
Technical Field
The invention belongs to the technical field of noise optimization of new energy automobiles, and particularly relates to a noise optimization method of a driving motor system for a new energy automobile.
Background
In a new energy automobile, a driving motor replaces an internal combustion engine to eliminate the 'masking effect' in a traditional fuel oil automobile, noise of an electric driving system becomes a main noise source, the noise problem is more prominent in some aspects compared with that of the traditional internal combustion engine automobile, and particularly, high-frequency order noise of the motor is more unacceptable when the motor rotates at high frequency. The existing optimization method mainly focuses on optimization of the motor electromagnetic scheme, but the optimization cannot completely eliminate noise, and the optimization and modification of the motor electromagnetic scheme is long in cycle and high in cost and has certain limitations.
Disclosure of Invention
In order to overcome the problems, the invention provides a method for optimizing the noise of a driving motor system for a new energy automobile, which adopts a scheme that a damping shock pad is pasted on a driving motor controller end cover, so that the resonance generated when the electromagnetic noise of a driving motor is transmitted to the motor controller end cover can be inhibited, and the noise of the driving motor system is effectively reduced.
A noise optimization method for a driving motor system for a new energy automobile comprises the following steps:
acquiring a resonance area on an end cover of a motor controller;
designing damping shock-absorbing gaskets according to a resonance area on an end cover of the motor controller, wherein the number and the shape of the damping shock-absorbing gaskets are designed according to the distribution condition of the resonance area, so that the damping shock-absorbing gaskets can completely cover the resonance area;
and step three, sticking the designed damping cushion pad to the end cover of the motor controller according to the corresponding position.
The method for acquiring the resonance area on the end cover of the motor controller is realized by the following steps:
carrying out a whole vehicle NVH test on a driving motor system to obtain a near field noise colormap of a first motor system; performing modal analysis on the motor controller end cover to obtain a vibration mode of the motor controller end cover; the resonance area of the end cover of the motor controller is identified by comparing the near-field noise colormap of the motor system with the vibration mode of the end cover of the motor controller.
The damping shock absorption gasket can be attached to the end cover of the motor controller, namely the shape of the damping shock absorption gasket is arranged along with the shape of the surface of the end cover of the automobile driving motor controller.
The damping and shock absorbing gasket is divided into two layers, the bottom layer is made of butyl rubber, the top layer is made of aluminum foil, the aluminum foil is pasted to one side of the butyl rubber, and the other side of the butyl rubber is pasted to the end cover of the motor controller.
In the second step, the modal analysis of the end cover of the motor controller is carried out by using special software for modal analysis, namely an Artemis Model, and according to the modal analysis requirement, the numerical Model, the density, the poisson ratio and the elastic modulus value of the end cover of the motor controller are input, so that the vibration pattern diagram of the end cover of the motor controller is simulated.
The invention has the beneficial effects that:
1. the invention can effectively improve the noise of the driving motor system;
2. the invention can avoid adjusting the design scheme of the end cover of the motor controller and reduce the manufacturing cost of the motor controller;
3. the damping shock absorption gasket can adopt schemes of different shapes and different quantities, and does not shield labels such as nameplates, two-dimensional codes and the like on the end cover of the motor controller.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments of the present invention will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the contents of the embodiments of the present invention and the drawings without creative efforts.
FIG. 1 is a schematic view of the position of a damping shim on a drive motor system;
FIG. 2 is a schematic view of a damping shim in a motor controller end cap bonding position;
FIG. 3 is a near-field noise colormap of a first motor system with damping shock-absorbing gaskets not adhered to end covers of a motor controller of a certain pure electric vehicle in the embodiment;
FIG. 4 is a near-field noise colormap of a second motor system with damping shock-absorbing gaskets adhered to end covers of a motor controller of a certain pure electric vehicle in the embodiment;
FIG. 5 is a diagram of the vibration mode of the end cover of the motor controller in the embodiment;
wherein: 1. the damping device comprises a driving motor, 2, a motor controller, 3, a first damping shock absorption gasket, 4, a second damping shock absorption gasket, 5, a third damping shock absorption gasket, 21 and a motor controller end cover.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.
In the description of the present invention, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, removably connected, or integral to one another; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.
In the description of the present embodiment, the terms "upper", "lower", "left", "right", and the like are used based on the orientations and positional relationships shown in the drawings only for convenience of description and simplification of operation, and do not indicate or imply that the referred device or element must have a specific orientation, be configured and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used only for descriptive purposes and are not intended to have a special meaning.
A noise optimization method for a driving motor system for a new energy automobile comprises the following steps:
acquiring a resonance area on an end cover of a motor controller;
designing damping shock-absorbing gaskets according to a resonance area on an end cover of the motor controller, wherein the number and the shape of the damping shock-absorbing gaskets are designed according to the distribution condition of the resonance area, so that the damping shock-absorbing gaskets can completely cover the resonance area;
and step three, sticking the designed damping cushion pad to the end cover of the motor controller according to the corresponding position.
The method for acquiring the resonance area on the end cover of the motor controller is realized by the following steps:
carrying out a whole vehicle NVH test on a driving motor system to obtain a near field noise colormap of a first motor system; performing modal analysis on the motor controller end cover to obtain a vibration mode of the motor controller end cover; the resonance area of the end cover of the motor controller is identified by comparing the near-field noise colormap of the motor system with the vibration mode of the end cover of the motor controller.
The damping shock absorption gasket can be attached to the end cover of the motor controller, namely the shape of the damping shock absorption gasket is arranged along with the shape of the surface of the end cover of the automobile driving motor controller.
The damping shock absorption gasket is divided into two layers, the bottom layer is made of high-molecular damping material butyl rubber for passenger vehicles, the top layer is made of aluminum foil, the aluminum foil is pasted to one side of the butyl rubber, and the other side of the butyl rubber is pasted to the end cover of the motor controller.
In the second step, the modal analysis of the end cover of the motor controller is carried out by using special software for modal analysis, namely an Artemis Model, and according to the modal analysis requirement, the numerical Model, the density, the poisson ratio and the elastic modulus value of the end cover of the motor controller are input, so that the vibration pattern diagram of the end cover of the motor controller is simulated. A resonance region on a motor controller end cap is acquired.
The method comprises the steps of carrying out whole vehicle NVH test on a vehicle adhered with damping shock-absorbing gaskets, obtaining a near-field noise colormap of a motor system, comparing the colormap with the near-field noise colormap of the motor system obtained by the whole vehicle NVH test carried out on the vehicle before the damping shock-absorbing gaskets are adhered, and obviously reducing noise.
Example 1
The invention discloses a noise optimization method for a driving motor system for a new energy automobile, which is described in detail by combining the accompanying drawings and specific embodiments, and specifically comprises the following steps: (1) carrying out a whole vehicle NVH test on a certain electric vehicle driving motor system to obtain a near field noise colormap of a first motor system, as shown in FIG. 3; (2) performing modal analysis on the motor controller end cover to obtain a vibration mode of the motor controller end cover, as shown in fig. 5; (3) comparing the near-field noise colormap of the first motor system with the vibration mode of the end cover of the motor controller, and identifying a resonance area of the end cover of the motor controller; (4) designing the number and the shape of damping shock absorption gaskets according to the resonance area of an end cover of a motor controller, and designing three damping shock absorption gaskets by taking a certain driving motor system as an example, namely a first damping shock absorption gasket 3, a second damping shock absorption gasket 4 and a third damping shock absorption gasket 5; (5) the first damping vibration-absorbing pad 3, the second damping vibration-absorbing pad 4 and the third damping vibration-absorbing pad 5 are respectively pasted on the end cover 21 of the drive motor controller from left to right, and are shown in fig. 1 and 2. And carrying out NVH test of the whole vehicle, and acquiring a near-field noise colormap of the second motor system, as shown in fig. 4. From a comparison of fig. 3 and fig. 4, it can be concluded that: the noise of the whole vehicle driving motor system is obviously optimized after the damping shock-absorbing gasket is adhered to the end cover 21 of the motor controller.
The shape, the thickness and the quantity of the damping shock absorption gaskets are arranged along with the shape of the end cover of the driving motor controller of the new energy automobile. The resonance points of the motor controller end covers with different structures are different, and the shape, the thickness and the number of the damping shock-absorbing gaskets can be designed according to the modal analysis result of the motor controller end covers, so that when the damping shock-absorbing gaskets are pasted on the motor controller end covers, the amplification effect of conducting electromagnetic noise of a motor to the motor controller end covers is weakened to the maximum degree, and the noise performance of an electric drive system is optimized to the maximum degree.
The damping shock-absorbing gasket comprises high-molecular damping materials of butyl rubber and aluminum foil for passenger cars.
When in use, the damping vibration-absorbing gasket I3, the damping vibration-absorbing gasket II 4 and the damping vibration-absorbing gasket III 5 are respectively pasted on the outer sides of the end covers 21 of the machine controller. Note that: when the damping shock absorption gasket is pasted, the damping shock absorption gasket is placed on a clean platform before being pasted, the outer side of the end cover of the motor controller is kept clean (no water, no dust and no oil), stripping paper of the damping shock absorption gasket is uncovered before being pasted, and no air bubbles or wrinkles exist after being pasted.
Although the preferred embodiments of the present invention have been described in detail with reference to the accompanying drawings, the scope of the present invention is not limited to the specific details of the above embodiments, and any person skilled in the art can substitute or change the technical solution of the present invention and its inventive concept within the technical scope of the present invention, and these simple modifications belong to the scope of the present invention.
It should be noted that the various technical features described in the above embodiments can be combined in any suitable manner without contradiction, and the invention is not described in any way for the possible combinations in order to avoid unnecessary repetition.
In addition, any combination of the various embodiments of the present invention is also possible, and the same should be considered as the disclosure of the present invention as long as it does not depart from the spirit of the present invention.
Claims (5)
1. A noise optimization method for a driving motor system for a new energy automobile is characterized by comprising the following steps:
acquiring a resonance area on an end cover of a motor controller;
designing damping shock-absorbing gaskets according to a resonance area on an end cover of the motor controller, wherein the number and the shape of the damping shock-absorbing gaskets are designed according to the distribution condition of the resonance area, so that the damping shock-absorbing gaskets can completely cover the resonance area;
and step three, sticking the designed damping cushion pad to the end cover of the motor controller according to the corresponding position.
2. The noise optimization method for the driving motor system for the new energy automobile according to claim 1, wherein the obtaining of the resonance area on the end cover of the motor controller is achieved by:
carrying out a whole vehicle NVH test on a driving motor system to obtain a near field noise colormap of a first motor system; performing modal analysis on the motor controller end cover to obtain a vibration mode of the motor controller end cover; the resonance area of the end cover of the motor controller is identified by comparing the near-field noise colormap of the motor system with the vibration mode of the end cover of the motor controller.
3. The noise optimization method for the driving motor system for the new energy automobile is characterized in that the damping shock absorption gasket can be attached to the end cover of the motor controller at the same time, namely the shape of the damping shock absorption gasket is arranged along with the shape of the surface of the end cover of the driving motor controller of the automobile.
4. The noise optimization method for the driving motor system for the new energy automobile as claimed in claim 3, wherein the damping and shock absorbing pad is divided into two layers, the bottom layer is butyl rubber, the top layer is an aluminum foil, the aluminum foil is adhered to one side of the butyl rubber, and the other side of the butyl rubber is adhered to the end cover of the motor controller.
5. The noise optimization method of the driving motor system for the new energy automobile according to claim 4, wherein in the second step, the modal analysis of the end cover of the motor controller is performed by using special software for modal analysis, namely an Artemis Model, and according to the modal analysis requirement, the digital-analog, density, Poisson ratio and elastic modulus value of the end cover of the motor controller are input, and the vibration pattern diagram of the end cover of the motor controller is simulated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011471357.XA CN112564431A (en) | 2020-12-14 | 2020-12-14 | Noise optimization method for driving motor system for new energy automobile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011471357.XA CN112564431A (en) | 2020-12-14 | 2020-12-14 | Noise optimization method for driving motor system for new energy automobile |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112564431A true CN112564431A (en) | 2021-03-26 |
Family
ID=75063220
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011471357.XA Pending CN112564431A (en) | 2020-12-14 | 2020-12-14 | Noise optimization method for driving motor system for new energy automobile |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112564431A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115163804A (en) * | 2022-07-04 | 2022-10-11 | 一汽奔腾轿车有限公司 | New energy automobile speed reducer gear lubricating method |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203608006U (en) * | 2013-11-27 | 2014-05-21 | 株洲时代新材料科技股份有限公司 | Motor noise control device |
| CN204354955U (en) * | 2014-10-23 | 2015-05-27 | 比亚迪股份有限公司 | Motor sound insulation shield and there is its electric machine assembly |
| CN208299656U (en) * | 2018-04-27 | 2018-12-28 | 福安市格林机电有限公司 | A kind of threephase asynchronous with sound insulation function |
| CN209250398U (en) * | 2018-12-26 | 2019-08-13 | 博格华纳汽车零部件（武汉）有限公司 | The starter brush holder assembly of medium-high frequency starting last or end syllable can be reduced |
| CN111506982A (en) * | 2020-03-18 | 2020-08-07 | 江铃汽车股份有限公司 | Motor noise optimization method |
-
2020
- 2020-12-14 CN CN202011471357.XA patent/CN112564431A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203608006U (en) * | 2013-11-27 | 2014-05-21 | 株洲时代新材料科技股份有限公司 | Motor noise control device |
| CN204354955U (en) * | 2014-10-23 | 2015-05-27 | 比亚迪股份有限公司 | Motor sound insulation shield and there is its electric machine assembly |
| CN208299656U (en) * | 2018-04-27 | 2018-12-28 | 福安市格林机电有限公司 | A kind of threephase asynchronous with sound insulation function |
| CN209250398U (en) * | 2018-12-26 | 2019-08-13 | 博格华纳汽车零部件（武汉）有限公司 | The starter brush holder assembly of medium-high frequency starting last or end syllable can be reduced |
| CN111506982A (en) * | 2020-03-18 | 2020-08-07 | 江铃汽车股份有限公司 | Motor noise optimization method |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115163804A (en) * | 2022-07-04 | 2022-10-11 | 一汽奔腾轿车有限公司 | New energy automobile speed reducer gear lubricating method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102454746B (en) | The vibration damper of vehicle and the method for reducing vibration | |
| CN112564431A (en) | Noise optimization method for driving motor system for new energy automobile | |
| CN110400558A (en) | A kind of detection of vehicle fuel battery engine system noise and noise-reduction method | |
| CN113048188A (en) | A automobile-used acoustics superstructure for low frequency broadband damping | |
| CN201665192U (en) | Noise-reducing device for whole truck | |
| CN213056674U (en) | Vehicle body assembly for improving noise of whole vehicle and vehicle | |
| CN209795147U (en) | Electric automobile second grade vibration isolation power assembly suspension system | |
| CN213744695U (en) | Vibration absorber and vehicle | |
| CN210526286U (en) | Full-limiting power assembly suspension with adjustable rigidity | |
| CN210489235U (en) | Noise detection and noise reduction system for vehicle fuel cell engine system | |
| CN103578460A (en) | Vehicle damping noise reduction method | |
| CN205951786U (en) | Vehicle footrest | |
| CN218367768U (en) | Vibration reduction structure with integrated bushing and rubber pad | |
| CN113386545B (en) | Vibration and noise reduction device of battery pack cover plate of pure electric structure automobile | |
| CN110154935A (en) | Body front wall sound insulating pad and electric car with it | |
| CN207177992U (en) | A kind of denoising structure of engine sump tank | |
| CN211892820U (en) | Suspension support and car | |
| CN116992563A (en) | Low-noise design and evaluation method for electric drive system based on acoustic super-structure material | |
| CN216714637U (en) | New energy automobile electron vacuum pump with shock-absorbing structure | |
| CN211288014U (en) | A novel shock pad for new forms of energy vacuum pump | |
| CN215321992U (en) | Plastic fuel tank bottom reinforcing structure | |
| CN210457338U (en) | Lifting device for detecting automobile parts | |
| CN203431083U (en) | Damper used for transmission shaft of automobile chassis | |
| CN209870124U (en) | Increase intelligent module for journey electric motor car | |
| CN209191630U (en) | A kind of structure and automobile reducing electric vehicle road rumble |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20210326 |