CN114942384A - Motor test method for electric vehicle - Google Patents
Motor test method for electric vehicle Download PDFInfo
- Publication number
- CN114942384A CN114942384A CN202210591136.9A CN202210591136A CN114942384A CN 114942384 A CN114942384 A CN 114942384A CN 202210591136 A CN202210591136 A CN 202210591136A CN 114942384 A CN114942384 A CN 114942384A
- Authority
- CN
- China
- Prior art keywords
- motor
- electric vehicle
- dynamometer
- power
- rotating speed
- 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
-
- 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
- G01R31/34—Testing dynamo-electric machines
-
- 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
-
- 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
- G01R1/04—Housings; Supporting members; Arrangements of terminals
- G01R1/0408—Test fixtures or contact fields; Connectors or connecting adaptors; Test clips; Test sockets
-
- 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
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/64—Electric machine technologies in electromobility
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
Abstract
The invention discloses a motor test method of an electric vehicle, which comprises the following steps: firstly, connecting an electric vehicle motor and a dynamometer: secondly, obtaining a MAP graph of a motor test of the electric vehicle; step three, testing the mechanical loss torque and the mechanical loss power of the electric vehicle motor; and fourthly, the motor efficiency test of the motor of the electric vehicle considering the mechanical loss of the measurement system. The invention has reasonable design, so that the dynamometer and the motor of the electric vehicle form a rotating body, the test operation is convenient, the motor efficiency MAP, the mechanical loss torque and the mechanical loss power of the motor can be conveniently obtained, the motor efficiency after the mechanical loss of a measuring system is considered, and the subsequent scientific evaluation of the motor of the electric vehicle is convenient.
Description
Technical Field
The invention belongs to the technical field of electric vehicle motor tests, and particularly relates to an electric vehicle motor test method.
Background
The electric vehicle motor is a core part on the electric vehicle, the performance of the electric vehicle motor is scientifically and accurately tested, the technical level of the electric vehicle motor can be effectively evaluated, and a basis is provided for motor design. However, in the current electric vehicle motor test, a motor efficiency MAP, the mechanical loss torque and the mechanical loss power of the motor are not convenient to obtain, the motor efficiency after the mechanical loss of the measurement system is considered, and the subsequent scientific evaluation of the electric vehicle motor is also not convenient.
Therefore, at present, an electric vehicle motor test method is lacked, so that the dynamometer and the electric vehicle motor form a rotating body, the test operation is convenient, the motor efficiency MAP, the mechanical loss torque and the mechanical loss power of the motor can be conveniently obtained, the motor efficiency after the mechanical loss of a measurement system is considered, and the subsequent scientific evaluation of the electric vehicle motor is convenient.
Disclosure of Invention
The technical problem to be solved by the invention is to provide a motor test method for an electric vehicle, which is reasonable in design, so that a dynamometer and an electric vehicle motor form a rotating body, the test operation is convenient, a motor efficiency MAP (MAP) diagram, mechanical loss torque and mechanical loss power of the motor can be conveniently obtained, the motor efficiency after the mechanical loss of a measurement system is considered, and the subsequent scientific evaluation of the electric vehicle motor can be conveniently carried out.
In order to solve the technical problems, the technical scheme adopted by the invention is as follows: a motor test method of an electric vehicle comprises the steps that the device adopted by the method comprises a base 16, an electric vehicle motor 10 and a dynamometer 5 which are arranged on the base 16, a connecting transmission mechanism connected between the electric vehicle motor 10 and the dynamometer 5, and an adjusting mechanism driving the electric vehicle motor 10 to lift and move;
the connecting transmission mechanism comprises a dynamometer coupling 6, a motor side coupling 7 and a transmission assembly 8 which are connected in sequence, the dynamometer coupling 6 is installed on an output shaft of the dynamometer 5, and the transmission assembly 8 is in transmission connection with an electric vehicle motor 10;
the adjusting mechanism comprises a horizontal adjusting component 13 arranged on a base 16, a lifting component 14 arranged on the horizontal adjusting component 13 and a motor mounting bracket 9 which is arranged on the lifting component 14 and is used for mounting a motor 10 of the electric vehicle; the dynamometer 5 is controlled by a dynamometer controller 4, the electric vehicle motor 10 is connected with an electric vehicle motor controller 3, the electric vehicle motor controller 3 is connected with a power analyzer 12, and the power analyzer 12 and the dynamometer controller 4 are both connected with the computer 1 through a network switch 2; the method is characterized by comprising the following steps:
step one, connecting a motor of an electric vehicle with a dynamometer;
step two, obtaining a MAP graph of an electric vehicle motor test;
step three, testing the mechanical loss torque and the mechanical loss power of the electric vehicle motor:
step 301, disconnecting the dynamometer 5 from the electric vehicle motor 10, and measuring the loss torque and loss power of the dynamometer at each rotating speed, wherein the specific process is as follows:
3011, disconnecting the dynamometer 5 from the electric vehicle motor 10, and setting the dynamometer 5 in a rotation speed control mode;
step 3012, adjust the rotation speed of dynamometer 5 from (0r/min, N) max ) Increased and the rotating speed of the dynamometer 5 is from (0r/min, N) max ) In the increasing process, when the set rotating speed step length is increased once, the loss torque and the loss power under different rotating speeds are obtained by using the dynamometer controller 4 and are sent to the computer 1 through the network switch 2; wherein N is max Represents the maximum allowable rotation speed of the electric vehicle motor 10;
step 302, the dynamometer 5 is in transmission connection with the electric vehicle motor 10, and the torque and the power of the dynamometer at each rotating speed are measured, wherein the specific process is as follows:
step 3021, connecting the dynamometer 5 with the electric vehicle motor 10, and setting the dynamometer 5 in a rotating speed control mode;
step 3022, obtaining torques at different rotation speeds according to the method in step 3012, calculating power, and sending the power to the computer 1 through the network switch 2;
in step 303, the computer records the loss torque obtained in step 3012 at the jth rotational speed as
The power loss is recorded as
The torque obtained at the jth speed in step 3022 is recorded as
Power is recorded as
And according to the formula
Obtaining the mechanical loss torque Me of the motor at the jth rotating speed j (ii) a Wherein the jth rotating speed is between 0r/min and N max J is a positive integer;
according to the formula
Obtaining the mechanical loss power Pe of the motor at the jth rotating speed j ；
Step 304, obtaining a relation curve of the mechanical loss torque and the rotating speed of the motor by using a computer according to the mechanical loss torque and the rotating speeds of the motor at the rotating speeds in the step 303;
obtaining a relation curve of the mechanical loss power and the rotating speed of the motor by adopting a computer according to the mechanical loss power and the rotating speeds of the motor at the rotating speeds in the step 303;
step four, the motor efficiency test of the electric vehicle motor considering the mechanical loss of the measurement system:
step 401, connecting the dynamometer 5 with the motor 10 of the electric vehicle in a transmission manner, and setting the dynamometer 5 in a torque control mode;
step 402, controlling the electric vehicle motor 10 to run at the highest no-load rotation speed through the electric vehicle motor controller 3;
step 403, adding a load to the electric vehicle motor 10 through the dynamometer until the working condition of the electric vehicle motor 10 reaches a motor test design working condition;
step 404, under the motor test design working condition of step 403, measuring by using a dynamometer 5 to obtain the motor rotating speed and recording as n' e The output torque of the motor is measured by the dynamometer 5 to calculate the output power P of the motor out Measuring the input power P of the motor of the electric vehicle by using a power analyzer in ；
Step 405, disconnecting the dynamometer 5 from the electric vehicle motor 10, and setting the dynamometer 5 in a rotating speed control mode;
step 406, adjusting the rotation speed of the dynamometer 5 to the motor rotation speed n 'in the step 404' e Measuring the motor speed n' e Lower power and is denoted as P loss ；
Step 407, according to the formula
The motor efficiency eta' after considering the mechanical loss of the measuring system is obtained.
The electric vehicle motor test method is characterized in that: the motor side coupling 7 comprises a motor side connecting disc 7-1 and a hole retainer ring 7-2 arranged in the motor side connecting disc 7-1, a positioning mounting hole 7-1-2 is arranged on the side surface of the motor side connecting disc 7-1 close to the dynamometer coupling 6, a plurality of fastening holes 7-1-3 are arranged on the circumference of the motor side connecting disc 7-1, a central mounting hole is arranged at the central axis position of the motor side connecting disc 7-1, the inner side wall of the central mounting hole is provided with a left retainer groove 7-1-1 and a left inner spline section 7-1-4, the left retainer ring groove 7-1-1 is positioned at the end part of the left internal spline section 7-1-4 close to the positioning and mounting hole 7-1-2, and the hole is mounted in the left retainer ring groove 7-1-1 through the retainer ring 7-2.
The electric vehicle motor test method is characterized in that: the transmission assembly 8 comprises a transmission shaft 8-1 and a shaft retainer ring 8-2 sleeved on the transmission shaft 8-1, a first retainer ring groove 8-1-1 and a second retainer ring groove are formed in the transmission shaft 8-1, the transmission shaft 8-1 is a spline shaft, one end of the transmission shaft 8-1 extends into a left inner spline section 7-1-4 of the central mounting hole, the other end of the transmission shaft 8-1 extends into a spline hole of an output shaft of an electric vehicle motor 10, and the shaft retainer ring 8-2 is installed in the second retainer ring groove.
The electric vehicle motor test method is characterized in that: the motor mounting bracket 9 comprises a fixed horizontal plate 9-1 and a motor mounting plate 9-2 which is arranged on the fixed horizontal plate 9-1 and is vertically distributed, a positioning mounting hole 9-4 for mounting an output shaft of a motor vehicle motor 10 is formed in the motor mounting plate 9-2, a fastening bolt hole 9-3 connected with the motor vehicle motor 10 is formed in the motor mounting plate 9-2, the number of the fastening bolt holes 9-3 is multiple, the fastening bolt holes 9-3 are circumferentially distributed along the positioning mounting hole 9-4, and the fixed horizontal plate 9-1 is connected with a lifting component 14.
The electric vehicle motor test method is characterized in that: the connection of the motor of the electric vehicle and the dynamometer in the first step comprises the following specific processes:
step 101, installing a retainer ring 7-2 for a hole in a left retainer ring groove 7-1-1 of a motor side connecting disc 7-1;
102, mounting the dynamometer coupling 6 in a positioning mounting hole 7-1-2, and penetrating bolts in a plurality of fastening holes 7-1-3 of a motor side connecting disc 7-1 and threaded holes of the dynamometer coupling 6;
103, mounting the electric vehicle motor 10 in a positioning mounting hole 9-4 of the motor mounting bracket 9, and penetrating a bolt in a fastening bolt hole 9-3 and a threaded hole corresponding to the electric vehicle motor 10 so as to mount the electric vehicle motor 10 on the motor mounting plate 9-2; the motor 10 of the electric vehicle is positioned on one side surface of the motor mounting plate 9-2, which is far away from the dynamometer 5;
104, coaxially arranging an output shaft of the dynamometer 5 and an output shaft of the electric vehicle motor 10 through the lifting component 14;
105, mounting a shaft retainer ring 8-2 in a second retainer ring groove of the transmission shaft 8-1, and inserting the other end of the transmission shaft 8-1, which is provided with the shaft retainer ring 8-2, into a spline hole of an output shaft of a motor 10 of the electric vehicle;
106, driving an electric vehicle motor 10 on a motor mounting bracket 9 to move close to a dynamometer 5 through a horizontal adjusting part 13 until one end of a transmission shaft 8-1 is mounted in a left inner spline section 7-1-4 of a motor side coupler 7 and one end face of the transmission shaft 8-1 is attached to a hole retainer ring 7-2 of the motor side coupler 7;
and 107, driving the electric vehicle motor 10 on the motor mounting bracket 9 to move away from the dynamometer 5 through the horizontal adjusting part 13 until the distance between one end face of the transmission shaft 8-1 and the hole retainer ring 7-2 is 1 mm-3 mm.
The electric vehicle motor test method is characterized in that: and step two, obtaining a MAP (MAP) of the motor test of the electric vehicle, wherein the specific process is as follows:
step 201, setting the dynamometer 5 to a rotating speed control mode;
step 202, when the input current of the electric vehicle motor controller 3 is 0A, the dynamometer 5 drives the electric vehicle motor 10 to set the rotating speed n for the first time through the dynamometer coupler 6, the motor side coupler 7 and the transmission assembly 8 1 Running;
step 203, adjusting the input current of the motor controller 3 of the electric vehicle from (0A, I) max ) Increased and current is input from (0A, I) to the motor controller 3 of the electric vehicle max ) In the increasing process, when the set current step length is increased once, the power analyzer 12 is utilized to obtain the input power of the electric vehicle motor controller and the output power of the electric vehicle motor controller, and the input power and the output power are sent to the computer 1 through the network switch 2; the output power of the electric vehicle motor controller is the same as the input power of the electric vehicle motor;
the dynamometer 5 is used for obtaining the rotating speed and the effective torque of the motor and sending the rotating speed and the effective torque to the computer 1 through the dynamometer controller 4 and the network switch 2, and then the computer 1 calculates the effective power and the efficiency of the motor;
step 204, the dynamometer 5 drives the electric vehicle motor 10 to set the rotation speed n at the ith time through the dynamometer coupling 6, the motor side coupling 7 and the transmission assembly 8 i Running; obtaining the effective power and the efficiency of the motor under different input currents according to the method in the step 203; wherein n is i ＝n 1 +(i-1) Alpha; alpha represents the step length of the change of the rotating speed of the motor of the electric vehicle, the range of the alpha is 50 r/min-1000 r/min, and i is a positive integer greater than or equal to 2;
step 205, repeating step 204 for multiple times until the maximum allowable rotating speed of the motor 10 of the electric vehicle is reached, and obtaining the effective power and the efficiency of the motor under different input currents according to the method in step 203;
and step 206, the computer 1 takes the rotating speed of the motor as an X coordinate, takes the input current, the effective power of the motor or the effective torque of the motor as a Y coordinate, takes the efficiency of the motor as a Z coordinate, and inputs the test data from the step 203 to the step 205 to obtain a motor efficiency MAP.
The electric vehicle motor test method is characterized in that: the value range of the current step length set once in step 203 is 1% I max ～10％I max (ii) a The value range of the once set rotating speed step length in the step 3012 is 50r/min to 1000 r/min.
The electric vehicle motor test method is characterized in that: the horizontal adjusting part 13 comprises two slide rails 13-1 arranged on the base 16, two slide blocks 13-2 respectively arranged on each slide rail 13-1, and a slide rail locker 13-3 arranged on each slide rail 13-1 and positioned between the two slide blocks 13-2;
the lifting component 14 comprises a carrier plate 14-4, a telescopic rod 14-1 arranged on the carrier plate 14-4 and a vertical rod 14-2 arranged on the carrier plate 14-4 and penetrating through the fixed horizontal plate 9-1, the bottom of the carrier plate 14-4 is connected with a sliding block 13-2 and a sliding rail locker 13-3, and the telescopic end of the telescopic rod 14-1 is connected with the bottom of the fixed horizontal plate 9-1.
The electric vehicle motor test system is characterized in that: the dynamometer 5 is installed on the base 14 through a dynamometer installation base 15, and an output shaft of the dynamometer 5 and an output shaft of the electric vehicle motor 10 are coaxially arranged.
Compared with the prior art, the invention has the following advantages:
1. the height of the motor mounting bracket is adjusted through the lifting component, so that the height of the electric vehicle motor mounted on the motor mounting bracket is adjusted, the output shaft of the dynamometer and the output shaft of the electric vehicle motor are coaxially arranged, the transmission accuracy of the dynamometer and the electric vehicle motor is improved, and the accuracy of an electric vehicle motor test is improved.
2. The invention drives the electric vehicle motor to move close to the electric vehicle motor through the horizontal adjusting component, thereby facilitating the installation and the disassembly of the dynamometer coupling, the motor side coupling and the transmission assembly and being capable of quickly and conveniently carrying out motor test.
3. The connecting transmission mechanism comprises a dynamometer coupling, a motor side coupling and a transmission assembly which are sequentially connected, so that power transmission from the dynamometer to the motor of the electric vehicle is realized, and the dynamometer drives the motor of the electric vehicle to rotate, so that the motor of the electric vehicle rotates according to the rotating speed required by the test.
4. The electric vehicle motor test method has the advantages of simple steps, convenience in implementation and simplicity and convenience in operation.
5. The electric vehicle motor test method is simple and convenient to operate, firstly the electric vehicle motor is connected with the dynamometer, secondly, a MAP (MAP) chart of the electric vehicle motor test, a mechanical loss torque and mechanical loss power test of the electric vehicle motor and a motor efficiency test of the electric vehicle motor considering the mechanical loss of a measurement system are obtained, and the electric vehicle motor can be conveniently and scientifically evaluated in the follow-up process.
6. The method is simple and convenient to operate for obtaining the motor efficiency MAP, and can carry out scientific evaluation on the performance of the motor; the invention can scientifically evaluate the motor efficiency by considering the motor efficiency after measuring the mechanical loss of the system.
In conclusion, the invention has reasonable design, so that the dynamometer and the motor of the electric vehicle form a rotating body, the test operation is convenient, the motor efficiency MAP, the mechanical loss torque and the mechanical loss power of the motor can be conveniently obtained, the motor efficiency after the mechanical loss of a measuring system is considered, and the subsequent scientific evaluation of the motor of the electric vehicle is convenient.
The technical solution of the present invention is further described in detail by the accompanying drawings and embodiments.
Drawings
FIG. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a schematic structural view of the motor-side coupling of the present invention.
Fig. 3 is a schematic structural view of a hole-removing retainer ring of the motor-side coupling of the present invention.
Fig. 4 is a schematic structural diagram of the transmission assembly of the present invention.
FIG. 5 is a block diagram of a method flow of the present invention.
Description of reference numerals:
1-a computer; 2-a network switch; 3-electric vehicle motor controller;
4-dynamometer machine controller; 5, a dynamometer; 6-dynamometer coupling;
7-motor side coupling; 7-1-motor side connection disc; 7-1-left retainer groove;
7-1-2-positioning mounting holes; 7-1-3-fastening holes; 7-1-4-left internal spline section;
7-2-retainer ring for hole; 8, a transmission assembly; 8-1-a drive shaft;
8-1-a first retainer groove; 8-2-a retainer ring for a shaft; 9, mounting a bracket for a motor;
9-1-fixing the horizontal plate; 9-2-motor mounting plate; 9-3-bolt hole fastening;
9-4, positioning a mounting hole; 10-electric vehicle motor; 11-level bubble;
12-power analyzer; 13-a level adjustment member; 13-1-a slide rail;
13-2 — a slider; 13-3-slide rail locking device; 14-a lifting member;
14-1-a telescoping rod; 14-2-vertical pole; 14-3-nut;
14-4-a carrier plate; 15-a dynamometer mounting base; 16-base.
Detailed Description
As shown in fig. 1 to 5, the device used in the method for testing the motor of the electric vehicle comprises a base 16, an electric vehicle motor 10 and a dynamometer 5 which are arranged on the base 16, a connecting transmission mechanism connected between the electric vehicle motor 10 and the dynamometer 5, and an adjusting mechanism for driving the electric vehicle motor 10 to lift and move;
the connecting transmission mechanism comprises a dynamometer coupling 6, a motor side coupling 7 and a transmission assembly 8 which are connected in sequence, the dynamometer coupling 6 is installed on an output shaft of the dynamometer 5, and the transmission assembly 8 is in transmission connection with an electric vehicle motor 10;
the adjusting mechanism comprises a horizontal adjusting component 13 arranged on a base 16, a lifting component 14 arranged on the horizontal adjusting component 13 and a motor mounting bracket 9 which is arranged on the lifting component 14 and is used for mounting a motor 10 of the electric vehicle; the dynamometer 5 is controlled by a dynamometer controller 4, the electric vehicle motor 10 is connected with an electric vehicle motor controller 3, the electric vehicle motor controller 3 is connected with a power analyzer 12, and the power analyzer 12 and the dynamometer controller 4 are both connected with the computer 1 through a network switch 2; the method comprises the following steps:
step one, connecting a motor of the electric vehicle with a dynamometer;
step two, obtaining a MAP graph of an electric vehicle motor test;
step three, testing the mechanical loss torque and the mechanical loss power of the electric vehicle motor:
step 301, disconnecting the dynamometer 5 from the electric vehicle motor 10, and measuring the loss torque and loss power of the dynamometer at each rotating speed, wherein the specific process is as follows:
step 3011, disconnecting the dynamometer 5 from the electric vehicle motor 10, and setting the dynamometer 5 in a rotation speed control mode;
step 3012, adjust the rotation speed of dynamometer 5 from (0r/min, N) max ) Increased and the rotating speed of the dynamometer 5 is from (0r/min, N) max ) In the increasing process, when the set rotating speed step length is increased once, the loss torque and the loss power under different rotating speeds are obtained by using the dynamometer controller 4 and are sent to the computer 1 through the network switch 2; wherein, N max Indicating the maximum allowable rotation of the electric vehicle motor 10Speed;
step 302, the dynamometer 5 is in transmission connection with the electric vehicle motor 10, and the torque and the power of the dynamometer at each rotating speed are measured, wherein the specific process is as follows:
step 3021, connecting the dynamometer 5 with the electric vehicle motor 10, and setting the dynamometer 5 in a rotating speed control mode;
step 3022, obtaining torques at different rotation speeds according to the method in step 3012, calculating power, and sending the power to the computer 1 through the network switch 2;
in step 303, the computer records the loss torque obtained in step 3012 at the jth rotational speed as
The power loss is recorded as
The torque obtained at the jth speed in step 3022 is recorded as
Power is recorded as
And according to the formula
Obtaining the mechanical loss torque Me of the motor at the jth rotating speed j (ii) a Wherein the jth rotating speed is between 0r/min and N max J is a positive integer;
according to the formula
Obtaining the mechanical loss power Pe of the motor at the jth rotating speed j ；
Step 304, obtaining a relation curve of the mechanical loss torque and the rotating speed of the motor by using a computer according to the mechanical loss torque and the rotating speeds of the motor at the rotating speeds in the step 303;
obtaining a relation curve of the mechanical loss power and the rotating speed of the motor by using a computer according to the mechanical loss power and the rotating speeds of the motor at the rotating speeds in the step 303;
step four, the motor efficiency test of the electric vehicle motor considering the mechanical loss of the measurement system:
step 401, connecting the dynamometer 5 with the motor 10 of the electric vehicle in a transmission manner, and setting the dynamometer 5 in a torque control mode;
step 402, controlling the electric vehicle motor 10 to operate at the highest no-load rotation speed through the electric vehicle motor controller 3;
step 403, increasing load to the electric vehicle motor 10 through the dynamometer until the working condition of the electric vehicle motor 10 reaches the motor test design working condition;
step 404, under the motor test design working condition of step 403, measuring by using a dynamometer 5 to obtain the motor rotating speed and recording the motor rotating speed as n' e The output torque of the motor is measured by the dynamometer 5 to calculate the output power P of the motor out Measuring the input power P of the motor of the electric vehicle by using a power analyzer in ；
Step 405, disconnecting the dynamometer 5 from the electric vehicle motor 10, and setting the dynamometer 5 to be in a rotating speed control mode;
step 406, adjusting the rotation speed of the dynamometer 5 to the motor rotation speed n 'in the step 404' e Measuring the motor speed n' e Lower power and is denoted as P loss ；
Step 407, according to the formula
The motor efficiency eta' after considering the mechanical loss of the measuring system is obtained.
In the embodiment, the motor side coupling 7 comprises a motor side connecting disc 7-1 and a hole retainer ring 7-2 arranged in the motor side connecting disc 7-1, the side surface of the motor side connecting disc 7-1 close to the dynamometer coupling 6 is provided with a positioning mounting hole 7-1-2, the circumference of the motor side connecting disc 7-1 is provided with a plurality of fastening holes 7-1-3, the central axis position of the motor side connecting disc 7-1 is provided with a central mounting hole, the inner side wall of the central mounting hole is provided with a left retainer ring groove 7-1-1 and a left inner spline section 7-1-4, the left retainer ring groove 7-1-1 is positioned at the end part of the left inner spline section 7-1-4 close to the positioning mounting hole 7-1-2, the retainer ring for hole 7-2 is installed in the left retainer ring groove 7-1-1.
In this embodiment, the transmission assembly 8 includes a transmission shaft 8-1 and a shaft retainer ring 8-2 sleeved on the transmission shaft 8-1, the transmission shaft 8-1 is provided with a first retainer ring groove 8-1-1 and a second retainer ring groove, the transmission shaft 8-1 is a spline shaft, one end of the transmission shaft 8-1 extends into the left internally splined section 7-1-4 of the central mounting hole, the other end of the transmission shaft 8-1 extends into a splined hole of an output shaft of an electric vehicle motor 10, and the shaft retainer ring 8-2 is mounted in the second retainer ring groove.
In this embodiment, the motor mounting bracket 9 includes a fixed horizontal plate 9-1 and a motor mounting plate 9-2 vertically disposed on the fixed horizontal plate 9-1, a positioning mounting hole 9-4 for mounting an output shaft of a motor vehicle motor 10 is disposed on the motor mounting plate 9-2, a fastening bolt hole 9-3 connected to the motor vehicle motor 10 is disposed on the motor mounting plate 9-2, the number of the fastening bolt holes 9-3 is plural, the plural fastening bolt holes 9-3 are circumferentially disposed along the positioning mounting hole 9-4, and the fixed horizontal plate 9-1 is connected to the lifting member 14.
In this embodiment, in the step one, the connection between the electric vehicle motor and the dynamometer includes the following specific processes:
step 101, installing a retainer ring 7-2 for a hole in a left retainer ring groove 7-1-1 of a motor side connecting disc 7-1;
102, mounting the dynamometer coupling 6 in a positioning mounting hole 7-1-2, and penetrating bolts in a plurality of fastening holes 7-1-3 of a motor side connecting disc 7-1 and threaded holes of the dynamometer coupling 6;
103, mounting the electric vehicle motor 10 in a positioning mounting hole 9-4 of the motor mounting bracket 9, and penetrating a bolt in a fastening bolt hole 9-3 and a threaded hole corresponding to the electric vehicle motor 10 so as to mount the electric vehicle motor 10 on the motor mounting plate 9-2; wherein, the electric vehicle motor 10 is positioned on one side surface of the motor mounting plate 9-2 far away from the dynamometer 5;
104, coaxially arranging an output shaft of the dynamometer 5 and an output shaft of the electric vehicle motor 10 through the lifting component 14;
105, mounting a shaft retainer ring 8-2 in a second retainer ring groove of the transmission shaft 8-1, and inserting the other end of the transmission shaft 8-1, which is provided with the shaft retainer ring 8-2, into a spline hole of an output shaft of the electric vehicle motor 10;
106, driving an electric vehicle motor 10 on a motor mounting bracket 9 to move close to a dynamometer 5 through a horizontal adjusting part 13 until one end of a transmission shaft 8-1 is mounted in a left inner spline section 7-1-4 of a motor side coupler 7 and one end face of the transmission shaft 8-1 is attached to a hole retainer ring 7-2 of the motor side coupler 7;
and 107, driving the electric vehicle motor 10 on the motor mounting bracket 9 to move away from the dynamometer 5 through the horizontal adjusting part 13 until the distance between one end face of the transmission shaft 8-1 and the hole retainer 7-2 is 1 mm-3 mm.
In this embodiment, the MAP of the electric vehicle motor test is obtained in the second step, and the specific process is as follows:
step 201, setting the dynamometer 5 in a rotating speed control mode;
step 202, when the input current of the electric vehicle motor controller 3 is 0A, the dynamometer 5 drives the electric vehicle motor 10 to set the rotating speed n for the first time through the dynamometer coupler 6, the motor side coupler 7 and the transmission assembly 8 1 Running;
step 203, adjusting the input current of the motor controller 3 of the electric vehicle from (0A, I) max ) Increased and current is input from (0A, I) to the motor controller 3 of the electric vehicle max ) In the increasing process, when the set current step length is increased once, the power analyzer 12 is utilized to obtain the input power of the electric vehicle motor controller and the output power of the electric vehicle motor controller, and the input power and the output power are sent to the computer 1 through the network switch 2; the output power of the electric vehicle motor controller is the same as the input power of the electric vehicle motor;
the dynamometer 5 is used for obtaining the rotating speed and the effective torque of the motor and sending the rotating speed and the effective torque to the computer 1 through the dynamometer controller 4 and the network switch 2, and then the computer 1 calculates the effective power and the efficiency of the motor;
step 204, the dynamometer 5 is laterally connected with the motor through a dynamometer coupling 6The shaft device 7 and the transmission assembly 8 drive the electric vehicle motor 10 to set the rotation speed n at the ith time i Running; obtaining the effective power and the efficiency of the motor under different input currents according to the method in the step 203; wherein n is i ＝n 1 + (i-1) α; alpha represents the step length of the change of the rotating speed of the motor of the electric vehicle, the range of the alpha is 50 r/min-1000 r/min, and i is a positive integer which is more than or equal to 2;
step 205, repeating step 204 for multiple times until the maximum allowable rotating speed of the electric vehicle motor 10 is reached, and obtaining the effective power and the efficiency of the motor under different input currents according to the method in step 203;
and step 206, the computer 1 takes the motor rotating speed as an X coordinate, takes the input current, the motor effective power or the motor effective torque as a Y coordinate, takes the motor efficiency as a Z coordinate, and inputs the test data from the step 203 to the step 205 to obtain a motor efficiency MAP.
In this embodiment, the value range of the current step length once set in step 203 is 1% I max ～10％I max (ii) a The value range of the once set rotating speed step length in the step 3012 is 50r/min to 1000 r/min.
In this embodiment, the horizontal adjustment component 13 includes two sliding rails 13-1 disposed on the base 16, two sliding blocks 13-2 disposed on each sliding rail 13-1, and a sliding rail locker 13-3 disposed on the sliding rail 13-1 and located between the two sliding blocks 13-2;
the lifting component 14 comprises a carrier plate 14-4, a telescopic rod 14-1 arranged on the carrier plate 14-4 and a vertical rod 14-2 arranged on the carrier plate 14-4 and penetrating through the fixed horizontal plate 9-1, the bottom of the carrier plate 14-4 is connected with a sliding block 13-2 and a sliding rail locker 13-3, and the telescopic end of the telescopic rod 14-1 is connected with the bottom of the fixed horizontal plate 9-1.
In this embodiment, the dynamometer 5 is mounted on the base 14 through a dynamometer mounting base 15, and an output shaft of the dynamometer 5 and an output shaft of the electric vehicle motor 10 are coaxially arranged.
In this embodiment, during actual use, the leveling bubble 11 is disposed on the fixed horizontal plate 9-1 to ensure that the fixed horizontal plate 9-1 is horizontally arranged.
In this embodiment, the lifting component 14 is arranged to adjust the height of the motor mounting bracket 9, and further adjust the height of the electric vehicle motor 10 mounted on the motor mounting bracket 9, so as to ensure that the output shaft of the dynamometer 5 and the output shaft of the electric vehicle motor 10 are coaxially arranged, thereby improving the transmission accuracy of the dynamometer 5 and the electric vehicle motor 10, and further improving the accuracy of the electric vehicle motor test.
In this embodiment, set up horizontal adjustment part 13, it is for horizontal adjustment part 13 to drive electric motor car motor 10 through lifting unit 14 and motor installing support 9 and is close to electric motor car motor 10 and remove, makes things convenient for dynamometer machine shaft coupling 6, motor side shaft coupling 7 and transmission assembly 8's installation to dismantle, can carry out the motor test fast conveniently.
In this embodiment, the setting and connecting transmission mechanism comprises a dynamometer coupler 6, a motor side coupler 7 and a transmission assembly 8 which are connected in sequence, so that power transmission from the dynamometer 5 to the electric vehicle motor 10 is realized, and the dynamometer 5 drives the electric vehicle motor 10 to rotate, so that the electric vehicle motor 10 rotates according to the test requirement.
In the embodiment, in actual use, the first retainer groove 8-1-1 on the transmission shaft 8-1 can be provided with the retainer ring for the shaft, and in this case, the retainer ring 7-2 for the hole can not be installed.
In the embodiment, in practical use, the motor 10 of the electric vehicle and the dynamometer coupling 6 are combined and connected through the motor side coupling 7 and the transmission assembly 8, and in the connection structure, the transmission shaft 8-1 has the characteristics of small rotational inertia and high rotation speed allowance, is convenient to install and use, and can be used for quickly and conveniently performing a motor performance test.
In the embodiment, the sliding rail locker 13-3 is arranged, so that when the electric vehicle motor 10 on the motor mounting bracket 9 moves to the right position along the sliding rail 13-1 through the sliding block 13-2, the sliding rail locker 13-3 is operated to relatively lock the sliding rail locker 13-3 and the sliding rail 13-1, thereby ensuring that the electric vehicle motor 10 on the motor mounting bracket 9 is not moved; when the adjustment is needed, the slide rail locker 13-3 is operated to unlock the slide rail locker 13-3 and the slide rail 13-1.
In the embodiment, during actual use, the nut 14-3 is sleeved at the end part of the vertical rod 14-2 extending out of the fixed horizontal plate 9-1.
In the embodiment, the nut 14-3 is unscrewed until the vertical rod 14-2 extends out of the end part of the fixed horizontal plate 9-1, and then the telescopic rod 14-1 is operated to extend or contract until the output shaft of the dynamometer 5 and the output shaft of the electric vehicle motor 10 are coaxially arranged; then screwing the nut 14-3 until the nut 14-3 is attached to the top of the fixed horizontal plate 9-1; the vertical rod 14-2 is arranged to support the motor mounting bracket 9 and the electric vehicle motor 10, so that the overall stability is improved.
In the embodiment, the positioning mounting holes 7-1-2 are formed, so that the motor side coupler 7 and the dynamometer coupler 6 can be conveniently and accurately connected.
In this embodiment, the telescopic rod 14-1 may be a jack or a hydraulic rod.
In this embodiment, the power analyzer 12 may refer to a PW3390 power analyzer installed on this day, and the power analyzer 12 is connected to the input power supply and the output power supply of the electric vehicle motor controller 3 through the current clamp and the voltage measurement line, respectively.
In this embodiment, the effective power of the motor is calculated as follows:
In this embodiment, the motor efficiency is calculated as follows:
in this embodiment, in practical use, the computer 1 may further obtain the efficiency of the motor controller of the electric vehicle, and the computer 1 uses the rotation speed of the motor as an X coordinate, uses the input current, the effective power of the motor, or the effective torque of the motor as a Y coordinate, uses the efficiency of the motor controller of the electric vehicle as a Z coordinate, and inputs the test data from step 203 to step 205 to obtain the MAP of the efficiency of the motor controller of the electric vehicle.
In this embodiment, the efficiency of the motor controller of the electric vehicle is calculated as follows:
In this embodiment, it should be noted that, in step 3011, the dynamometer 5 is disengaged from the electric vehicle motor 10, and then the electric vehicle motor 10 is removed.
In the present embodiment, the dynamometer 5 includes a rotation speed control mode and a torque control mode
In this embodiment, it should be noted that, when the dynamometer 5 is in the rotation speed control mode, the dynamometer 5 drives the electric vehicle motor 10 to operate at the set rotation speed, and as the input current of the electric vehicle motor controller 3 increases, the torque and power output by the electric vehicle motor 10 increases.
In this embodiment, it should be noted that the input current of the electric vehicle motor controller 3 is zero when the electric vehicle motor 10 is not energized.
In this example, I max Represents the maximum value of the input current of the electric vehicle motor controller 3.
In conclusion, the invention has reasonable design, so that the dynamometer and the motor of the electric vehicle form a rotating body, the test operation is convenient, the motor efficiency MAP, the mechanical loss torque and the mechanical loss power of the motor can be conveniently obtained, the motor efficiency after the mechanical loss of a measuring system is considered, and the subsequent scientific evaluation of the motor of the electric vehicle is convenient.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and all simple modifications, changes and equivalent structural changes made to the above embodiment according to the technical spirit of the present invention still fall within the protection scope of the technical solution of the present invention.
Claims (9)
1. The electric vehicle motor test method is characterized in that the device adopted by the method comprises a base (16), an electric vehicle motor (10) and a dynamometer (5) which are arranged on the base (16), a connecting transmission mechanism connected between the electric vehicle motor (10) and the dynamometer (5), and an adjusting mechanism for driving the electric vehicle motor (10) to lift and move;
the connecting transmission mechanism comprises a dynamometer coupling (6), a motor side coupling (7) and a transmission assembly (8) which are sequentially connected, the dynamometer coupling (6) is installed on an output shaft of the dynamometer (5), and the transmission assembly (8) is in transmission connection with a motor (10) of the electric vehicle;
the adjusting mechanism comprises a horizontal adjusting component (13) arranged on a base (16), a lifting component (14) arranged on the horizontal adjusting component (13) and a motor mounting bracket (9) which is arranged on the lifting component (14) and is used for mounting a motor (10) of the electric vehicle; the dynamometer (5) is controlled by a dynamometer controller (4), the electric vehicle motor (10) is connected with the electric vehicle motor controller (3), the electric vehicle motor controller (3) is connected with a power analyzer (12), and the power analyzer (12) and the dynamometer controller (4) are both connected with the computer (1) through a network switch (2); the method comprises the following steps:
step one, connecting a motor of the electric vehicle with a dynamometer;
step two, obtaining a MAP graph of an electric vehicle motor test;
step three, testing the mechanical loss torque and the mechanical loss power of the electric vehicle motor:
step 301, disconnecting the dynamometer (5) from the electric vehicle motor (10), and measuring loss torque and loss power of the dynamometer at each rotating speed, wherein the specific process is as follows:
3011, disconnecting the dynamometer (5) from the electric vehicle motor (10), and setting the dynamometer (5) in a rotation speed control mode;
step 3012, adjust the rotation speed of dynamometer (5) from (0r/min, N max ) Increased and the rotating speed of the dynamometer (5) is from (0r/min, N max ) In the increasing process, when the set rotating speed step length is increased once, the loss torque and the loss power under different rotating speeds are obtained and are sent to the computer (1) through the network switch (2); wherein N is max Represents the maximum allowable rotation speed of the motor (10) of the electric vehicle;
step 302, the dynamometer (5) is in transmission connection with the electric vehicle motor (10), and the torque and the power of the dynamometer at each rotating speed are measured, wherein the specific process is as follows:
step 3021, connecting the dynamometer (5) with an electric vehicle motor (10), setting the dynamometer (5) in a rotating speed control mode, and not electrifying the electric vehicle motor (10);
step 3022, obtaining torques at different rotation speeds according to the method of the step 3012, further calculating power, and sending the power to the computer (1) through the network switch (2);
in step 303, the computer records the loss torque obtained in step 3012 at the jth rotational speed as
The power loss is recorded as
The torque obtained at the jth speed in step 3022 is recorded as
Power is recorded as
And according to the formula
Obtaining the mechanical loss torque Me of the motor at the jth rotating speed j (ii) a Wherein the jth rotating speed is between 0r/min and N max J is a positive integer;
according to the formula
Obtaining the mechanical loss power Pe of the motor at the jth rotating speed j ；
Step 304, obtaining a relation curve of the mechanical loss torque and the rotating speed of the motor by using a computer according to the mechanical loss torque and the rotating speeds of the motor at the rotating speeds in the step 303;
obtaining a relation curve of the mechanical loss power and the rotating speed of the motor by using a computer according to the mechanical loss power and the rotating speeds of the motor at the rotating speeds in the step 303;
step four, the motor efficiency test of the motor of the electric vehicle considering the mechanical loss of the measurement system is carried out:
step 401, connecting the dynamometer (5) with a motor (10) of the electric vehicle in a transmission manner, and setting the dynamometer (5) in a torque control mode;
step 402, controlling an electric vehicle motor (10) to operate at the highest no-load rotating speed through an electric vehicle motor controller (3);
step 403, adding load to the electric vehicle motor (10) through the dynamometer until the working condition of the electric vehicle motor (10) reaches a motor test design working condition;
step 404, under the motor test design working condition of step 403, measuring by using a dynamometer (5) to obtain the motor rotating speed and recording the motor rotating speed as n' e The output torque of the motor is measured by the dynamometer (5) to calculate the output power P of the motor out Measuring the input power P of the motor of the electric vehicle by using a power analyzer in ；
Step 405, disconnecting the dynamometer (5) from the electric vehicle motor (10), and setting the dynamometer (5) to be in a rotating speed control mode;
step 406, adjusting the rotating speed of the dynamometer (5) to the motor rotating speed n 'in the step 404' e Measuring the motor speed n' e Lower power and is denoted as P loss ；
Step 407, according to the formula
The motor efficiency eta' after considering the mechanical loss of the measuring system is obtained.
2. The method for testing the motor of the electric vehicle according to claim 1, wherein: the motor side coupling (7) comprises a motor side connecting disc (7-1) and a hole retainer ring (7-2) arranged in the motor side connecting disc (7-1), a positioning mounting hole (7-1-2) is formed in the side face, close to the dynamometer coupling (6), of the motor side connecting disc (7-1), a plurality of fastening holes (7-1-3) are arranged on the circumference of the motor side connecting disc (7-1), a central mounting hole is formed in the central axis position of the motor side connecting disc (7-1), a left retainer ring groove (7-1-1) and a left inner spline section (7-1-4) are formed in the inner side wall of the central mounting hole, the left retainer ring groove (7-1-1) is located at the end portion, close to the positioning mounting hole (7-1-2), of the left inner spline section (7-1-4), the retainer ring (7-2) for the hole is arranged in the left retainer ring groove (7-1-1).
3. The method for testing the motor of the electric vehicle as claimed in claim 2, wherein: the transmission assembly (8) comprises a transmission shaft (8-1) and a shaft retainer ring (8-2) sleeved on the transmission shaft (8-1), a first retainer ring groove (8-1-1) and a second retainer ring groove are formed in the transmission shaft (8-1), the transmission shaft (8-1) is a spline shaft, one end of the transmission shaft (8-1) extends into a left inner spline section (7-1-4) of the central mounting hole, the other end of the transmission shaft (8-1) extends into a spline hole of an output shaft of a motor (10) of the electric vehicle, and the shaft retainer ring (8-2) is installed in the second retainer ring groove.
4. The method for testing the motor of the electric vehicle as claimed in claim 3, wherein: the motor mounting support (9) comprises a fixed horizontal plate (9-1) and a motor mounting plate (9-2) which is arranged on the fixed horizontal plate (9-1) and is vertically distributed, a positioning mounting hole (9-4) for mounting an output shaft of a motor vehicle motor (10) is formed in the motor mounting plate (9-2), a plurality of fastening bolt holes (9-3) connected with the motor vehicle motor (10) are formed in the motor mounting plate (9-2), the number of the fastening bolt holes (9-3) is multiple, the fastening bolt holes (9-3) are circumferentially arranged along the positioning mounting hole (9-4), and the fixed horizontal plate (9-1) is connected with the lifting component (14).
5. The method for testing the motor of the electric vehicle as claimed in claim 4, wherein: the connection of the motor of the electric vehicle and the dynamometer in the first step comprises the following specific processes:
step 101, installing a retainer ring (7-2) for a hole in a left retainer ring groove (7-1-1) of a motor side connecting disc (7-1);
102, installing a dynamometer coupling (6) in a positioning installation hole (7-1-2), and penetrating bolts in a plurality of fastening holes (7-1-3) of a motor side connecting disc (7-1) and threaded holes of the dynamometer coupling (6);
103, installing the electric vehicle motor (10) in a positioning installation hole (9-4) of the motor installation support (9), and penetrating a bolt in a fastening bolt hole (9-3) and a threaded hole corresponding to the electric vehicle motor (10) so as to enable the electric vehicle motor (10) to be installed on the motor installation plate (9-2); the electric vehicle motor (10) is positioned on one side surface of the motor mounting plate (9-2) far away from the dynamometer (5);
104, coaxially arranging an output shaft of the dynamometer (5) and an output shaft of a motor (10) of the electric vehicle through the lifting component (14);
105, mounting a shaft retainer ring (8-2) in a second retainer ring groove of the transmission shaft (8-1), and inserting the other end of the transmission shaft (8-1) provided with the shaft retainer ring (8-2) into a spline hole of an output shaft of a motor (10) of the electric vehicle;
106, driving an electric vehicle motor (10) on a motor mounting bracket (9) to move close to a dynamometer (5) through a horizontal adjusting part (13) until one end of a transmission shaft (8-1) is mounted in a left internal spline section (7-1-4) of a motor side shaft coupling (7), and enabling one end face of the transmission shaft (8-1) to be attached to a retainer ring (7-2) for a hole of the motor side shaft coupling (7);
and 107, driving the electric vehicle motor (10) on the motor mounting bracket (9) to move away from the dynamometer (5) through the horizontal adjusting part (13) until the distance between one end face of the transmission shaft (8-1) and the hole retainer ring (7-2) is 1-3 mm.
6. The method for testing the motor of the electric vehicle according to claim 1, wherein: and step two, obtaining a MAP (MAP) of the motor test of the electric vehicle, wherein the specific process is as follows:
step 201, setting a dynamometer (5) to be in a rotating speed control mode;
step 202, when the input current of the motor controller (3) of the electric vehicle is 0A, the dynamometer (5) measures the input current through measurementThe power machine coupling (6), the motor side coupling (7) and the transmission assembly (8) drive the electric vehicle motor (10) to set the rotating speed n for the first time 1 Operating;
step 203, adjusting the input current of the electric vehicle motor controller (3) from (0A, I) max ) Increasing and inputting current from (0A, I) to motor controller (3) of electric vehicle max ) In the increasing process, when the set current step length is increased once, the input power of the motor controller of the electric vehicle and the output power of the motor controller of the electric vehicle are obtained by using a power analyzer (12) and are sent to a computer (1) through a network switch (2); the output power of the electric vehicle motor controller is the same as the input power of the electric vehicle motor;
the dynamometer (5) is used for obtaining the rotating speed and the effective torque of the motor and sending the rotating speed and the effective torque to the computer (1) through the dynamometer controller (4) and the network switch (2), and then the computer (1) calculates the effective power and the efficiency of the motor;
step 204, the dynamometer (5) drives the electric vehicle motor (10) to set the rotation speed n at the ith time through the dynamometer coupling (6), the motor side coupling (7) and the transmission assembly (8) i Operating; obtaining the effective power and the efficiency of the motor under different input currents according to the method in the step 203; wherein n is i ＝n 1 + (i-1) α; alpha represents the step length of the change of the rotating speed of the motor of the electric vehicle, the range of the alpha is 50 r/min-1000 r/min, and i is a positive integer which is more than or equal to 2;
step 205, repeating step 204 for multiple times until the maximum allowable rotating speed of the motor (10) of the electric vehicle is reached, and obtaining the effective power and the efficiency of the motor under different input currents according to the method in step 203;
and step 206, the computer (1) takes the motor rotating speed as an X coordinate, takes the input current, the motor effective power or the motor effective torque as a Y coordinate, takes the motor efficiency as a Z coordinate, and inputs the test data from the step 203 to the step 205 to obtain a motor efficiency MAP.
7. The method for testing the motor of the electric vehicle as claimed in claim 6, wherein: the value range of the current step length set once in step 203 is 1% I max ～10％I max (ii) a The value range of the once set rotating speed step length in the step 3012 is 50r/min to 1000 r/min.
8. A method for testing an electric vehicle motor according to claim 1, wherein: the horizontal adjusting part (13) comprises two sliding rails (13-1) arranged on the base (16), two sliding blocks (13-2) respectively arranged on each sliding rail (13-1), and a sliding rail locker (13-3) arranged on each sliding rail (13-1) and positioned between the two sliding blocks (13-2);
the lifting component (14) comprises a carrier plate (14-4), a telescopic rod (14-1) arranged on the carrier plate (14-4) and a vertical rod (14-2) arranged on the carrier plate (14-4) and penetrating through the fixed horizontal plate (9-1), the bottom of the carrier plate (14-4) is connected with a sliding block (13-2) and a sliding rail locker (13-3), and the telescopic end of the telescopic rod (14-1) is connected with the bottom of the fixed horizontal plate (9-1).
9. An electric vehicle motor test system as defined in claim 1, wherein: the dynamometer (5) is installed on the base (14) through a dynamometer installation base (15), and an output shaft of the dynamometer (5) and an output shaft of the electric vehicle motor (10) are coaxially arranged.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210591136.9A CN114942384A (en) | 2022-05-27 | 2022-05-27 | Motor test method for electric vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210591136.9A CN114942384A (en) | 2022-05-27 | 2022-05-27 | Motor test method for electric vehicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114942384A true CN114942384A (en) | 2022-08-26 |
Family
ID=82909199
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210591136.9A Pending CN114942384A (en) | 2022-05-27 | 2022-05-27 | Motor test method for electric vehicle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114942384A (en) |
-
2022
- 2022-05-27 CN CN202210591136.9A patent/CN114942384A/en active Pending
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108362502B (en) | Multifunctional test stand for testing driving/braking performance of hub motor and energy recovery and method thereof | |
| CN110108437B (en) | Automobile body aerodynamic performance test generation system and test method | |
| CN103018039B (en) | Testing table for testing of forklift transmission part | |
| CN103235261A (en) | System and method thereof for testing endurance of symmetrical motor | |
| CN112816869A (en) | Permanent magnet synchronous motor test bench and test system thereof | |
| CN108692961B (en) | Chassis dynamometer test bed driven by permanent magnet synchronous motor | |
| CN104113257B (en) | The system and method deviated for determining the rotor-position of motor | |
| CN217587530U (en) | Motor test device for electric vehicle | |
| CN114942384A (en) | Motor test method for electric vehicle | |
| CN109277776B (en) | Thermal sleeve equipment of structural driving axle housing and application method of thermal sleeve equipment | |
| CN214225360U (en) | Motor test bench and test system thereof | |
| CN108844734A (en) | Shaft coupling type chassis transmission performance testing device | |
| CN210465632U (en) | Multi-working-condition simulation test device based on multi-shaft input type double-rotor motor | |
| CN203616127U (en) | Non-contact type automotive speed changer performance test rack | |
| CN115946872A (en) | Near-water surface effect test device for rotor type aircraft | |
| CN110864915A (en) | Electric automobile power assembly test system | |
| CN204595615U (en) | A kind of circumferential locate mode motor experiment stand multiple degrees of freedom quick centering device | |
| CN101858804A (en) | Road test brake dragging moment measuring equipment | |
| CN112983757B (en) | Device and method for aerodynamic efficiency of wind turbine array for wind tunnel experiment | |
| CN113145413B (en) | Product fixing tool for flexible gluing system | |
| CN112594143B (en) | Universal test platform for vertical shaft multi-fan | |
| CN113735001A (en) | Gas turbine installation aid, gas turbine installation method and mobile generator set | |
| CN113064070B (en) | Angle and torque measuring device for high-voltage large-current brake equipment | |
| CN220289674U (en) | Traction motor test device | |
| CN112207734A (en) | Four-degree-of-freedom positioning and centering device |
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 |