CN111487496A - Power assembly system level electromagnetic compatibility test platform - Google Patents
Power assembly system level electromagnetic compatibility test platform Download PDFInfo
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- CN111487496A CN111487496A CN202010377155.2A CN202010377155A CN111487496A CN 111487496 A CN111487496 A CN 111487496A CN 202010377155 A CN202010377155 A CN 202010377155A CN 111487496 A CN111487496 A CN 111487496A
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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
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M17/00—Testing of vehicles
- G01M17/007—Wheeled or endless-tracked vehicles
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- General Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Testing Electric Properties And Detecting Electric Faults (AREA)
Abstract
The invention provides a power assembly system-level electromagnetic compatibility test platform which comprises an anechoic chamber, an anechoic chamber external dynamometer system, a wall penetrating shaft, a transmission shaft, a coupler, a power assembly system, a power battery system, a test antenna and a test receiver system, wherein the anechoic chamber is provided with a plurality of through holes; the anechoic chamber is fixedly connected with the wall penetrating shafts on the left side and the right side; the darkroom external dynamometer is respectively arranged at the left side and the right side outside the darkroom, the two dynamometer shafts are coaxial, and the wall penetrating shaft is coaxially connected with the darkroom external dynamometer; the transmission shafts are respectively arranged inside and outside the anechoic chamber and distributed on the left side and the right side; the coupler is connected with a transmission shaft of the dynamometer in the darkroom and output shafts on the left side and the right side of the sample power assembly system, the coupler is supported by the supporting unit, and the supporting unit can axially move; the power battery is connected with the power assembly system through the direct current bus to provide energy for the power assembly system. The invention can effectively establish the relevance of the electromagnetic compatibility technology of the parts, the system and the whole vehicle, and improve the quality of the electromagnetic compatibility development of the whole vehicle.
Description
Technical Field
The invention belongs to the technical field of new energy automobiles, and particularly relates to a power assembly system-level electromagnetic compatibility test platform.
Background
The electric automobile power assembly is a key subsystem of a new energy automobile and mainly comprises an inverter, a driving motor and a speed reducer, wherein the inverter is a high-voltage switching power supply which has obvious electromagnetic disturbance characteristics and often causes the electromagnetic disturbance of the whole automobile to exceed the limit value requirement specified by the national standard. At present, most host plants require the suppliers of electric drive systems to carry out part-level electromagnetic compatibility tests, but the single control of part-level electromagnetic disturbance cannot ensure the electromagnetic compatibility of the whole vehicle, and the introduction of the system-level electromagnetic compatibility test can effectively establish the relevance of the electromagnetic compatibility technologies of parts, systems and the whole vehicle, and improve the quality of the electromagnetic compatibility development of the whole vehicle.
The electromagnetic compatibility tests of the existing electric drive system are all single component level (an inverter and a motor, wherein the motor is used as a load of the inverter and a laboratory bench dynamometer to realize butt joint), the disturbance characteristic can only reflect the characteristics of the components and cannot reflect the electromagnetic compatibility characteristic of a vehicle system, the vehicle is a large system formed by a plurality of components, the electromagnetic compatibility among the components cannot be ignored, the inverter loading electromagnetic compatibility tests are carried out in the development stage of a certain vehicle type, the disturbance characteristic meets the requirement of national standard limit, the test result of the vehicle carrying the inverter in the whole vehicle electromagnetic compatibility tests cannot meet the requirement of the national standard limit, and the inverter is a key component which is used for positioning and analyzing the vehicle type and influences the electromagnetic compatibility of the vehicle. A power assembly system-level electromagnetic compatibility test platform is used for testing the electromagnetic compatibility of an electric drive assembly system-level, the test is different from a component-level electromagnetic compatibility test from the actual electromagnetic compatibility test of a whole vehicle, the test has a promoting effect on establishing the electromagnetic compatibility relevance of components, systems and vehicles, and the test is an indispensable part for establishing the electromagnetic compatibility development process of the whole vehicle.
Disclosure of Invention
In view of this, the invention aims to provide a power assembly system-level electromagnetic compatibility test platform to solve the problems that the existing vehicle electromagnetic compatibility test is not complete and the electromagnetic compatibility between systems cannot be evaluated in a standard manner.
In order to achieve the purpose, the technical scheme of the invention is realized as follows:
a power assembly system-level electromagnetic compatibility testing platform comprises an anechoic chamber, anechoic chamber external dynamometer systems (left and right sides), wall penetrating shafts (left and right sides), transmission shafts (inner and outer sides and left and right sides of an anechoic chamber), couplers (left and right sides), a power assembly system (an inverter, a motor, a reducer and an original vehicle axle (left and right sides)), a testing antenna and a testing receiver system.
The anechoic chamber is an electromagnetic compatible semi-anechoic chamber for vehicles, is fixedly connected with the wall penetrating shafts on the left side and the right side, and meets the shielding efficiency requirement of the anechoic chamber for the vehicles;
the darkroom external dynamometer is respectively arranged at the left side and the right side outside the darkroom, the two dynamometer shafts are coaxial, and the wall penetrating shaft is coaxially connected with the darkroom external dynamometer;
the transmission shafts are power transmission devices of the dynamometer and are respectively arranged inside and outside the darkroom and distributed on the left side and the right side;
the coupler is connected with a transmission shaft of the dynamometer in the darkroom and output shafts on the left side and the right side of the sample power assembly system, the coupler is supported by the supporting unit, and the supporting unit can move axially;
the power assembly system mainly comprises a control unit (an inverter and other control units), a motor, a speed reducer, a transmission shaft of an original vehicle and a low-voltage control wire harness;
the direct current bus is connected with the power battery and the power assembly system and provides energy for the power assembly system;
the simulation car shell surrounds the power assembly system, the power battery system and the direct current bus, the simulation actual car shell has a certain shielding effect on the system, and the car shell meets the shielding effect of the actual car shell;
the upper computer control unit is connected with the power assembly system and the power battery system through optical fibers, and realizes system control on the power assembly outside the darkroom;
the test antenna can adjust a test angle and a test direction by taking the power assembly system as a center;
the test receiver is used for recording and reading signals of the test antenna;
furthermore, the direct current bus, the power battery system and the power assembly system are all parts in a state consistent with that of an actual vehicle, and an upper computer outside the darkroom can control the direct current bus, the power battery system and the power assembly system through optical fiber signal transmission;
furthermore, the power assembly system adopts a transmission shaft of the original vehicle to better simulate the running state of the actual vehicle;
furthermore, the coupler adopts insulation connection to simulate the insulation connection state between the tire of the actual wheel and the ground;
furthermore, the car shell, the power battery and the power assembly system adopt a connection mode consistent with that of an actual vehicle, the connection modes mainly comprise mutual electrical connection, bonding connection and the like, and the relative positions of the car shell, the power battery and the power assembly system are kept consistent with the layout of vehicle components in a test.
Compared with the prior art, the power assembly system-level electromagnetic compatibility test platform has the following advantages:
(1) the system is based on the actual vehicle layout power assembly test system, can reflect the system-level electromagnetic compatibility characteristic, is closer to the electromagnetic compatibility of the actual vehicle, and has great promotion effect on the vehicle electromagnetic compatibility development process;
(2) the invention can effectively establish the relevance of the electromagnetic compatibility technology of the parts, the system and the whole vehicle, and improve the quality of the electromagnetic compatibility development of the whole vehicle.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate an embodiment of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:
FIG. 1 is a front view of a powertrain system level electromagnetic compatibility testing platform according to an embodiment of the present invention;
fig. 2 is a cross-sectional view of a power assembly system-level electromagnetic compatibility test platform according to an embodiment of the present invention.
Description of reference numerals:
1-a left external dynamometer system; 2-left external shaft; 3-a left side shaft-through wall connector; 4-left side hidden built-in shaft; 5-left inner coupling; 6-a powertrain system; 7-right inner coupling; 8-a right side hidden built-in shaft; 9-right side shaft through wall connector; 10-right external shaft; 11-external dynamometer system on right side; 12-simulating a shell frame system; 13-a power battery system; 14-a test antenna; 15-testing the receiver system; 16-a direct current bus; 17-anechoic chamber; 18-left side support unit; 19-right side support unit; and 20-an upper computer control system.
Detailed Description
It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.
The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.
As shown in fig. 1, which is a front view of the present invention, and fig. 2 is a cross-sectional view of the present invention, the present invention provides a power assembly system-level electromagnetic compatibility testing platform, which includes an anechoic chamber 17, left and right dynamometer, left and right transmission shafts, left and right wall penetrating shafts, left and right supports and couplings, a power assembly system 6, a power battery system 13, and a simulated vehicle shell frame system 12, specifically:
the power assembly system 6 is a key part of a tested system level, and the power assembly system 6 comprises control units such as an inverter, a motor, a speed reducer, a primary axle and a low-voltage control wire harness;
the power battery system 13 provides energy for the power assembly system;
the direct current bus 16 is connected with the power assembly system 6 and the power battery system 13 in a manner of two high-voltage shielding quick-plug connections;
the upper computer control system 20 is connected with the power assembly system 6 through a photoelectric converter and an optical fiber and controls the power assembly system 6;
the simulated shell frame system 12 is a tool manufactured according to different vehicle types, covers the power assembly system 6, the power battery system 13 and the direct current bus 16, and is arranged in a bonding and grounding mode by being close to the actual arrangement of the vehicle;
the left inner coupling 5 and the right inner coupling 7 are respectively connected with a left output shaft and a right output shaft of the power assembly system 6 through insulation, the connection strength can meet the requirements of testing rotating speed and torque, and the axial runout is within an allowable error range;
the left supporting unit 18 supports the left inner coupler 5, the right supporting unit 19 supports the right inner coupler 7, and the two supporting units can be adjusted horizontally in the axial direction;
the left hidden built-in shaft 4 is axially connected with the left shaft through-wall connector 3 and the left inner coupler 5;
the right hidden built-in shaft 8 is axially connected with the right shaft through wall connector 9 and the right inner coupler 7;
the left external shaft 2 is connected with the left external dynamometer system 1 and the left shaft wall-penetrating connector 3;
the right external shaft 10 is connected with the right external dynamometer system 11 and the right shaft through-wall connector 9;
the anechoic chamber 17 provides an environment for system level testing, the left side shaft-through wall connector 3 and the right side shaft-through wall connector 9 respectively penetrate through the wall of the anechoic chamber 17 from the left end and the right end, and the wall of the anechoic chamber 17 has a certain supporting effect on the left side shaft-through wall connector 3 and the right side shaft-through wall connector 9;
the test antenna 14 is connected with the test receiver 15 through a high-quality radio frequency cable to form an electromagnetic disturbance test system;
and after the building is finished, the electromagnetic disturbance of the whole system can be measured through the peripheral receiver outside the test chamber. The specific work flow is as follows: the left external dynamometer system 1 and the right external dynamometer system 11 provide rotation speed control and are connected with the left external dynamometer system through a left shaft through-wall connector 3, a right shaft through-wall connector 9, a left internal coupling 5, a right internal coupling 7, a left external shaft 2,
The left-side hidden internal shaft 4, the right-side hidden internal shaft 8 and the right-side external shaft bring power into the power assembly system 6, at the moment, the rotating speed of the power assembly system 6 is controlled by the left-side external dynamometer system 1 and the right-side external dynamometer system 11 (a uniform speed mode in the actual vehicle forming process is simulated), the power battery system 13 provides energy for the power assembly system 6 through the direct-current bus 16, and under the control of the upper computer control system 20 through optical fibers, the power assembly system 6 performs torque mode control and outputs torque (the actual vehicle working is simulated, and the power assembly mainly provides torque). At the moment, the power system achieves constant rotating speed, constant torque and keeps constant power for output.
In the anechoic chamber, a test antenna 14 is arranged to receive electromagnetic disturbance generated by a power assembly system working at a constant rotating speed and a constant torque, a disturbance signal is transmitted to a test receiver system 15 through a coaxial cable, and the test receiver system 15 reads the signal to complete the system-level electromagnetic compatibility test of the power assembly.
It should be noted that all the components used in the present invention are conventional products, and the shapes and structures of the components belong to the prior art.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (10)
1. The utility model provides a power assembly system level electromagnetic compatibility test platform which characterized in that: the system comprises an anechoic chamber, an anechoic chamber external dynamometer system, a wall penetrating shaft, a transmission shaft, a coupling, a power assembly system, a power battery system, a test antenna and a test receiver system;
the anechoic chamber is fixedly connected with the wall penetrating shafts on the left side and the right side;
the darkroom external dynamometer is respectively arranged at the left side and the right side outside the darkroom, the two dynamometer shafts are coaxial, and the wall penetrating shaft is coaxially connected with the darkroom external dynamometer;
the transmission shafts are power transmission devices of the dynamometer, are respectively arranged inside and outside the anechoic chamber and are distributed on the left side and the right side;
the coupler is connected with a transmission shaft of the dynamometer in the darkroom and output shafts on the left side and the right side of the sample power assembly system, the coupler is supported by the supporting unit, and the supporting unit can move axially;
the power battery is connected with the power assembly system through a direct current bus to provide energy for the power assembly system;
the test antenna is used for adjusting a test angle and a test direction by taking the power assembly system as a center;
the test receiver system is used for recording and reading signals of the test antenna.
2. The powertrain system level electromagnetic compatibility testing platform of claim 1, wherein: the power assembly system, the power battery system and the direct current bus are surrounded by the simulation car shell, and shielding is achieved.
3. The powertrain system level electromagnetic compatibility testing platform of claim 1, wherein: the power assembly system comprises a control unit, a motor, a speed reducer, an original vehicle transmission shaft and a low-voltage control wire harness.
4. The powertrain system level electromagnetic compatibility testing platform of claim 1, wherein: the system control device further comprises an upper computer control unit, wherein the upper computer control unit is connected with the power assembly system and the battery system through optical fibers, and the system control of the power assembly is realized outside the darkroom.
5. The powertrain system level electromagnetic compatibility testing platform of claim 1, wherein: the direct current bus, the power battery system and the power assembly system are all parts in the same state with the real vehicle, and an upper computer outside the darkroom can control the direct current bus, the power battery system and the power assembly system through optical fiber signal transmission.
6. The powertrain system level electromagnetic compatibility testing platform of claim 3, wherein: the power assembly system adopts a transmission shaft of an original vehicle so as to better simulate the running state of an actual vehicle.
7. The powertrain system level electromagnetic compatibility testing platform of claim 1, wherein: the coupler adopts insulation connection to simulate the insulation connection state of the tire of an actual wheel and the ground.
8. The powertrain system level electromagnetic compatibility testing platform of claim 1, wherein: and the direct-current bus is connected with the power assembly system and the power battery system in a manner of fast plug connection of two high-voltage shields.
9. The powertrain system level electromagnetic compatibility testing platform of claim 1, wherein: the test antenna is connected with the test receiver through a high-quality radio frequency cable, and an electromagnetic disturbance test system is formed.
10. The powertrain system level electromagnetic compatibility test platform of any of claims 1-9, wherein: the anechoic chamber is an electromagnetic-compatible semi-anechoic chamber for a vehicle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010377155.2A CN111487496A (en) | 2020-05-07 | 2020-05-07 | Power assembly system level electromagnetic compatibility test platform |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010377155.2A CN111487496A (en) | 2020-05-07 | 2020-05-07 | Power assembly system level electromagnetic compatibility test platform |
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| CN111487496A true CN111487496A (en) | 2020-08-04 |
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| CN202010377155.2A Pending CN111487496A (en) | 2020-05-07 | 2020-05-07 | Power assembly system level electromagnetic compatibility test platform |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111897315A (en) * | 2020-08-31 | 2020-11-06 | 南方电网科学研究院有限责任公司 | Electromagnetic disturbance testing device for controlling protection equipment |
| CN112557711A (en) * | 2020-12-29 | 2021-03-26 | 中国汽车技术研究中心有限公司 | Electromagnetic compatibility test bench and test method for high-voltage system assembly of electric passenger vehicle |
| CN113447738A (en) * | 2021-06-15 | 2021-09-28 | 安徽精科检测技术有限公司 | Movable rotary hub system for automobile electromagnetic compatibility test |
| CN114264959A (en) * | 2021-12-08 | 2022-04-01 | 中国汽车工程研究院股份有限公司 | EMC performance test system under fuel cell system loading condition |
| 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 |
-
2020
- 2020-05-07 CN CN202010377155.2A patent/CN111487496A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111897315A (en) * | 2020-08-31 | 2020-11-06 | 南方电网科学研究院有限责任公司 | Electromagnetic disturbance testing device for controlling protection equipment |
| CN112557711A (en) * | 2020-12-29 | 2021-03-26 | 中国汽车技术研究中心有限公司 | Electromagnetic compatibility test bench and test method for high-voltage system assembly of electric passenger vehicle |
| CN113447738A (en) * | 2021-06-15 | 2021-09-28 | 安徽精科检测技术有限公司 | Movable rotary hub system for automobile electromagnetic compatibility test |
| CN114264959A (en) * | 2021-12-08 | 2022-04-01 | 中国汽车工程研究院股份有限公司 | EMC performance test system under fuel cell system loading condition |
| CN114264959B (en) * | 2021-12-08 | 2023-09-26 | 中国汽车工程研究院股份有限公司 | EMC performance test system under loading working condition of fuel cell system |
| 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 |
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