CN111352000A - Transmission system for electromagnetic compatibility test of electric drive system of new energy automobile - Google Patents
Transmission system for electromagnetic compatibility test of electric drive system of new energy automobile Download PDFInfo
- Publication number
- CN111352000A CN111352000A CN202010237583.5A CN202010237583A CN111352000A CN 111352000 A CN111352000 A CN 111352000A CN 202010237583 A CN202010237583 A CN 202010237583A CN 111352000 A CN111352000 A CN 111352000A
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- shaft
- wall
- electric drive
- shielding cover
- flange
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/001—Measuring interference from external sources to, or emission from, the device under test, e.g. EMC, EMI, EMP or ESD testing
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R1/00—Details of instruments or arrangements of the types included in groups G01R5/00 - G01R13/00 and G01R31/00
- G01R1/02—General constructional details
- G01R1/18—Screening arrangements against electric or magnetic fields, e.g. against earth's field
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/005—Testing of electric installations on transport means
- G01R31/006—Testing of electric installations on transport means on road vehicles, e.g. automobiles or trucks
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- General Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Electromagnetism (AREA)
- Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
Abstract
The invention relates to a transmission system for an electromagnetic compatibility test of an electric drive system of a new energy automobile, which comprises a dynamometer, a high-speed coupler, a torque sensor, a torque flange, a wall penetrating shaft, a screen cover, a shaft sleeve, a base shaft, a carbon brush, an electric drive system, a support, a half shaft flange, an insulating elastic coupler, a first mounting base and a second mounting base. A shielding cover is arranged outside the wall penetrating shaft; two ends of the shielding cover are respectively connected with a shaft sleeve through hinges; a carbon brush is arranged in the shielding cover and is contacted with the wall penetrating shaft; according to the transmission system for the electromagnetic compatibility test of the electric drive system of the new energy automobile, the shielding cover is arranged on the wall penetrating shaft and is in contact with the wall penetrating shaft through the carbon brush, so that the safe high-rotating-speed high-torque test working condition can be ensured, the static charge cannot be accumulated when the drive shaft rotates, the antenna effect of the drive shaft is avoided, and the like.
Description
Technical Field
The invention belongs to the technical field of electromagnetic compatibility tests of new energy vehicles, and particularly relates to a transmission system for an electromagnetic compatibility test of an electric drive system of a new energy vehicle.
Background
Along with the continuous development of new energy automobile electrification, the integrated design trend of parts is also continuously promoted, the current electric drive system is changed into the integrated design integration of a controller, a speed reducer and a motor, the thought of independently designing and reassembling the motor, the speed reducer and the controller in the early stage is broken away, and the structure has the advantages of high torque capacity and capability of carrying a motor with a higher rotating speed.
The previous test experience shows that the electromagnetic compatibility problem of the whole new energy automobile is mostly caused by high voltage and large current of an electric drive system, the difference of electromagnetic compatibility performance is large during no-load and loading, the electromagnetic compatibility performance of the drive system cannot be truly reflected under the no-load working condition, relevant standards of the electromagnetic compatibility of the new energy automobile are also introduced, the on-load test of key parts (drive motors) is added, and the loading mode suggested in the standards is a dynamometer using a through-wall shaft. At the moment, the design of a transmission system of the dynamometer is a big difficulty and challenge, and the driving shaft penetrating through the wall is ensured to meet the distance requirement of standard test configuration, and the darkroom is ensured to have good shielding performance and safe high-rotating-speed and high-torque test working conditions are also ensured.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide a transmission system for the electromagnetic compatibility on-load test of an electric drive system of a new energy automobile, which can ensure the safe high-rotating-speed high-torque test working condition, can ensure that static charges cannot be accumulated when the drive shaft rotates, and can avoid the antenna effect of the drive shaft.
In order to solve the technical problem, the invention aims to realize that:
the invention relates to a transmission system for an electromagnetic compatibility test of an electric drive system of a new energy automobile, which is characterized by comprising the following components:
the output end of the dynamometer is connected with the torque sensor through a high-speed coupler; the torque sensor is connected with the torque flange;
one end of the wall penetrating shaft penetrates through the wall of the darkroom, is connected with the torque flange, and the other end of the wall penetrating shaft is connected with the base shaft; a shielding cover is arranged outside the wall penetrating shaft; the shielding cover is connected with the wall of the darkroom through a shielding flange; two ends of the shielding cover are respectively connected with a shaft sleeve through hinges; a carbon brush is arranged in the shielding cover and is contacted with the wall penetrating shaft;
the electric driving system is positioned in the darkroom and fixed on the bracket, and one end of the electric driving system is connected with a half shaft; one end of the half shaft is connected with a half shaft flange; an insulating elastic coupling is arranged between the base shaft and the half shaft flange;
the dynamometer is fixed on the first mounting base, and the bracket is fixed on the second mounting base; the base shaft is connected with a bearing mounting seat, and the bearing mounting seat is fixed on the second mounting base.
As a further explanation of the above scheme, the first mounting base and the second mounting base are both of a double-layer structure, and an insulating shock-absorbing isolation pad is arranged between the upper layer and the lower layer.
As a further explanation of the above scheme, the shielding cover is provided with a carbon brush which is in contact with the wall penetrating shaft.
As a further explanation of the above-described configuration, the shield case is provided with a flange extending in the direction of the wall penetrating axis inside.
As a further explanation of the above solution, the second mounting base is connected to a shielding steel plate provided inside the wall of the darkroom.
The invention has the beneficial effects that: the invention relates to a transmission system for electromagnetic compatibility test of an electric drive system of a new energy automobile, wherein a shielding cover is arranged on a wall penetrating shaft and is contacted with the wall penetrating shaft through a carbon brush, so that the transmission system can ensure safe high-rotating-speed and high-torque test working conditions, can ensure that static charges are not accumulated when a drive shaft rotates, avoids antenna effect of the drive shaft and the like,
drawings
FIG. 1 is a schematic representation of a transmission system according to the present invention;
fig. 2 is a schematic structural view of the through-wall shaft and the shield case.
The designations in the figures illustrate the following: 1-a dynamometer; 2-high speed coupling; 3-a torque sensor; 4-torque flange; 5-a wall penetrating shaft; 6-darkroom wall; 7-a shielding case; 8-a shielding flange; 9-shaft sleeve; a 10-base shaft; 11-a carbon brush; 12-an electric drive system; 13-a scaffold; 14-half shaft; 15-half shaft flange; 16-an insulating elastic coupling; 17-a first mounting base; 18-a second mounting base; 19-insulating shock-absorbing spacer; 20-bearing mounting seat.
Detailed Description
The invention is further described with reference to the following figures and specific examples.
The present invention will be described in detail with reference to fig. 1 and 2. The invention relates to a transmission system for an electromagnetic compatibility test of an electric drive system of a new energy automobile, which comprises: the device comprises a dynamometer 1, a high-speed coupling 2, a torque sensor 3, a torque flange 4, a wall penetrating shaft 5, a screen cover 7, a shaft sleeve 9, a base shaft 10, a carbon brush 11, an electric drive system 12, a support 13, a half shaft 14, a half shaft flange 15, an insulating elastic coupling 16, a first mounting base 17 and a second mounting base 18.
The output end of the dynamometer 1 is connected with the torque sensor 3 through the high-speed coupler 2. The torque sensor 3 is connected with a torque flange 4. And when calibrating and calibrating the torque sensor 3, the torque flange 4 can be detached, so that the torque sensor 2 can be conveniently calibrated. And is connected to the bearing housing 20 at the location of the torque sensor 2.
The wall penetrating shaft 5 penetrates through a darkroom wall 6, one end of the wall penetrating shaft is connected with the torque flange 4, and the other end of the wall penetrating shaft is connected with the base shaft 10. The wall penetrating shaft 5 is of a shaft sleeve structure processed with high precision. And a shielding cover 7 is arranged outside the wall penetrating shaft 5, and the shielding cover 7 is fixedly connected with the darkroom wall 6 through a shielding flange 8. The two ends of the shielding cover 7 are respectively connected with the shaft sleeves 9 through hinges, so that the shielding cover is convenient to open. The carbon brush 11 is arranged in the shaft sleeve 9 and is in contact with the through-wall shaft 5, because the through-wall shaft 5 can generate static electricity in the high-speed rotating process, and the carbon brush 11 can release the generated static electricity in real time.
The electric driving system 12 is located in the darkroom and fixed on the support 13, one end of the electric driving system 13 is connected with the half shaft 14, one end of the half shaft 14 is connected with the half shaft flange 15, and the insulating elastic coupling 16 is arranged between the base shaft 10 and the half shaft flange 15, so that the influence of external charge coupling to the electric driving system 12 on a test result can be avoided.
The dynamometer 1 is fixed on a first mounting base 17, and the bracket 13 is fixed on a second mounting base 18. The base shaft 10 is connected to a bearing mount 20, and the bearing mount 20 is fixed to the second mount base 18. And the bottom of the shaft sleeve 9 is provided with a positioning groove which is connected with the first mounting base 17 and the second mounting base 18 through a precise positioning key, so that the shafting is convenient to align.
Furthermore, in the invention, the first mounting base 17 and the second mounting base 18 are both of a double-layer structure, and an insulating shock-absorbing isolation pad 19 is arranged between the upper layer and the lower layer, so that the insulating shock-absorbing function can be achieved.
Further, in the present invention, the construction of the through-wall shaft 5 is stepped with both ends being thin and the middle being thick. One end of the shaft sleeve arranged at the two ends of the wall penetrating shaft 5 extends to the thicker part of the wall penetrating shaft 5. The shield case 7 is provided in a portion of the through-wall shaft 5 having a large diameter. And a carbon brush 11 is arranged on the shielding cover 7 and is contacted with the wall penetrating shaft 6.
Further, a flange 71 extending in the direction of the through-wall shaft 6 is provided inside the shield case 7. The degree of buckling of wall axle can effectual shielding, guarantees that inside wall axle 5 is in the on-state with axle sleeve 9 all the time.
Further, the lower layer of the second mounting base 18 is connected to a shielding steel plate provided inside the darkroom wall 6.
According to the invention, the shielding principle of the through-wall shaft 5 is to shield electromagnetic waves outside a dark room by using a waveguide electromagnetic wave signal shielding principle, two ends of the through-wall shaft 5 are isolated and connected, a conductive carbon brush 11 is arranged between the shielding cover 7 and the shaft sleeve 9 and the through-wall shaft, the conductive carbon brush is in contact with the surface of the through-wall shaft for real-time electrostatic discharge, the strength of the used carbon brush 11 is the most separated grade, high-speed rotation is ensured, and meanwhile, the durability of the carbon brush 11 is ensured. And the shaft sleeve 9 outside the shielding cover adopts a hinge design so as to be opened for replacing the carbon brush 11, and the carbon brush 11 needs to be replaced once a year.
The foregoing detailed description of the preferred embodiments of the invention has been presented. It should be understood that numerous modifications and variations could be devised by those skilled in the art in light of the present teachings without departing from the inventive concepts. Therefore, the technical solutions available to those skilled in the art through logic analysis, reasoning and limited experiments based on the prior art according to the concept of the present invention should be within the scope of protection defined by the claims.
Claims (5)
1. The utility model provides a transmission system of new energy automobile electric drive system electromagnetic compatibility test, characterized by includes:
the output end of the dynamometer (1) is connected with the torque sensor (3) through the high-speed coupler (2); the torque sensor (3) is connected with the torque flange (4);
one end of the wall penetrating shaft (5) penetrates through a wall (6) of the darkroom, is connected with the torque flange (4), and the other end of the wall penetrating shaft is connected with the base shaft (10); a shielding cover (7) is arranged outside the wall penetrating shaft (5); the shielding cover (7) is connected with the darkroom wall (6) through a shielding flange (8); two ends of the shielding cover (7) are respectively connected with a shaft sleeve (9) through hinges; a carbon brush (11) is arranged in the shielding cover (9) and is contacted with the wall penetrating shaft (5);
the electric driving system (12) is positioned in the darkroom and fixed on the bracket (13), and one end of the electric driving system (12) is connected with a half shaft (14); one end of the half shaft (14) is connected with a half shaft flange (15); an insulating elastic coupling (16) is arranged between the base shaft (10) and the half shaft flange (15);
the dynamometer (1) is fixed on a first mounting base (17), and the support (13) is fixed on a second mounting base (18); the base shaft (10) is connected with a bearing mounting seat (20), and the bearing mounting seat (20) is fixed on the second mounting base (18).
2. The transmission system for the electromagnetic compatibility test of the electric drive system of the new energy automobile as claimed in claim 1, wherein the first mounting base (17) and the second mounting base (18) are both of a double-layer structure, and an insulating shock-absorbing isolation pad (19) is arranged between the upper layer and the lower layer.
3. The transmission system for the electromagnetic compatibility test of the electric drive system of the new energy automobile as claimed in claim 1, characterized in that a carbon brush (11) is arranged on the shielding cover (7) and is in contact with the through-wall shaft (6).
4. The transmission system for the electromagnetic compatibility test of the electric drive system of the new energy automobile as claimed in claim 1 or 3, characterized in that a flange (71) extending towards the direction of the through-wall shaft (6) is arranged inside the shielding cover (7).
5. The transmission system for the electromagnetic compatibility test of the electric drive system of the new energy automobile as claimed in claim 1, wherein the second mounting base (18) is connected with a shielding steel plate arranged on the inner side of the darkroom wall (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010237583.5A CN111352000A (en) | 2020-03-30 | 2020-03-30 | Transmission system for electromagnetic compatibility test of electric drive system of new energy automobile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010237583.5A CN111352000A (en) | 2020-03-30 | 2020-03-30 | Transmission system for electromagnetic compatibility test of electric drive system of new energy automobile |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111352000A true CN111352000A (en) | 2020-06-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010237583.5A Pending CN111352000A (en) | 2020-03-30 | 2020-03-30 | Transmission system for electromagnetic compatibility test of electric drive system of new energy automobile |
Country Status (1)
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| CN (1) | CN111352000A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111856194A (en) * | 2020-08-24 | 2020-10-30 | 安徽精科检测技术有限公司 | Spliced electric assembly electromagnetic compatibility loading test system in darkroom |
| CN114609467A (en) * | 2022-05-11 | 2022-06-10 | 南京容测检测技术有限公司 | Loading device for electromagnetic compatibility test of new energy automobile electric drive assembly system |
| CN114705932A (en) * | 2022-03-24 | 2022-07-05 | 苏州信科检测技术有限公司 | EMC on-load testing device |
| CN116893315A (en) * | 2023-09-07 | 2023-10-17 | 苏州英特模科技股份有限公司 | Wall penetrating system of load dynamometer of semi-anechoic chamber and mounting method of wall penetrating system |
-
2020
- 2020-03-30 CN CN202010237583.5A patent/CN111352000A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111856194A (en) * | 2020-08-24 | 2020-10-30 | 安徽精科检测技术有限公司 | Spliced electric assembly electromagnetic compatibility loading test system in darkroom |
| CN111856194B (en) * | 2020-08-24 | 2024-06-04 | 安徽精科检测技术有限公司 | Electric assembly electromagnetic compatibility loading test system spliced in darkroom |
| CN114705932A (en) * | 2022-03-24 | 2022-07-05 | 苏州信科检测技术有限公司 | EMC on-load testing device |
| CN114609467A (en) * | 2022-05-11 | 2022-06-10 | 南京容测检测技术有限公司 | Loading device for electromagnetic compatibility test of new energy automobile electric drive assembly system |
| CN114609467B (en) * | 2022-05-11 | 2022-08-02 | 南京容测检测技术有限公司 | Loading device for electromagnetic compatibility test of new energy automobile electric drive assembly system |
| CN116893315A (en) * | 2023-09-07 | 2023-10-17 | 苏州英特模科技股份有限公司 | Wall penetrating system of load dynamometer of semi-anechoic chamber and mounting method of wall penetrating system |
| CN116893315B (en) * | 2023-09-07 | 2023-12-12 | 苏州英特模科技股份有限公司 | Wall penetrating system of load dynamometer of semi-anechoic chamber and mounting method of wall penetrating system |
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