CN-122016125-A - Intelligent torque testing method and device for high-speed motor of new energy automobile

CN122016125ACN 122016125 ACN122016125 ACN 122016125ACN-122016125-A

Abstract

The invention relates to the technical field of motor testing, in particular to a torque intelligent testing method and device for a high-speed motor of a new energy automobile, comprising a testing rack, a motor positioning component, a detecting component and an intelligent testing analysis system; the test rack is of a T-shaped structure, a servo linear sliding table is arranged in the middle of the test rack, a test conveying frame is arranged at the top of the servo linear sliding table in a sliding mode, a normal discharging frame and an abnormal discharging frame are respectively arranged on two sides of the inside of the test rack, and the upper end faces of the normal discharging frame and the abnormal discharging frame are flush with the upper end face of the test conveying frame. According to the invention, the plurality of mounting grooves of the rotating frame in the detection assembly can accommodate torque sensors and couplings of different specifications, the matching of the rotating control mechanism can rapidly switch the adaptive parts, the testing efficiency of motors of different specifications is improved, the annular magnetorheological damper is connected in series, the shafting vibration is effectively attenuated, the torque measuring precision is improved, the whole device realizes the automatic, high-precision and multi-specification compatible test, and the testing requirement of the high-speed motor of the new energy automobile is met.

Inventors

LU GUOWEI
WANG JIANGFENG
LANG XIANGRONG
ZHU QING
DAI QIPENG
Me Chuanqi
ZHANG XUEXIAN
LU JIANJIAN
YAN KE

Assignees

杭州威衡科技有限公司

Dates

Publication Date: 20260512
Application Date: 20260305

Claims (10)

1. The torque intelligent testing device of the high-speed motor of the new energy automobile comprises a testing rack (1), a motor positioning assembly, a detecting assembly and an intelligent testing analysis system, and is characterized in that a servo linear sliding table (4) is arranged in the middle of the inside of the testing rack (1), a testing conveying frame (6) is arranged at the top of the servo linear sliding table (4) in a sliding mode, a normal discharging frame (2) and an abnormal discharging frame (3) are respectively arranged on two sides of the inside of the testing rack (1), guiding sliding rails (5) are respectively arranged on the front side and the rear side of the inside of the testing rack (1), the bottom of the testing conveying frame (6) is in sliding connection with the guiding sliding rails (5), the motor positioning assembly is arranged on the testing conveying frame (6) and used for fixing a testing motor (7), the detecting assembly is arranged on the right side of the testing rack (1) and used for conducting torque testing on the testing motor (7), and the intelligent testing analysis system is used for collecting and analyzing testing parameters and evaluating states of the testing motor (7).
2. The intelligent torque testing device for the high-speed motor of the new energy automobile is characterized in that the motor positioning assembly comprises a vertical adjusting sliding table (8), a horizontal adjusting sliding table (9) and a positioning servo electric cylinder (10), wherein the vertical adjusting sliding table (8) is symmetrically arranged above the inside of the testing conveying frame (6), the horizontal adjusting sliding table (9) is slidably arranged at the front and rear of the top of the vertical adjusting sliding table (8), the positioning servo electric cylinder (10) is slidably arranged at the top of the horizontal adjusting sliding table (9), positioning blocks are arranged at the top ends of driving shafts of the positioning servo electric cylinders (10), and positioning holes matched with the positioning blocks are formed in the periphery of the bottom of the testing motor (7).
3. The intelligent torque testing device for the high-speed motor of the new energy automobile is characterized in that a discharging control sliding table (11) is arranged on the right side of the inner wall of the testing rack (1), two magnetic attraction sliding blocks (12) are arranged on the left side of the discharging control sliding table (11), the magnetic attraction sliding blocks (12) can be electrified to adsorb the right side of the bottom of the testing motor (7), and the testing motor (7) after the testing is transferred to a normal discharging rack (2) or an abnormal discharging rack (3).
4. The intelligent torque testing device for the high-speed motor of the new energy automobile is characterized in that the detecting assembly comprises a fixing frame (13), a rotating frame (14), a supporting frame (19), a hysteresis dynamometer (21) and an adjusting electric cylinder (22), wherein the fixing frame (13) is fixed on the right side of the testing frame (1), the rotating frame (14) is rotatably arranged in the fixing frame, the supporting frame (19) is fixed on the right side of the fixing frame (13), a rotation control motor (20) is arranged on the right side of the supporting frame, an output shaft of the rotation control motor (20) is connected with the right end of the rotating frame (14) through a coupler, a plurality of mounting grooves (15) are formed in the rotating frame (14), a torque sensor (17) and a coupler (16) are arranged in the mounting grooves (15), and the coupler (16) is connected with the detecting end of the torque sensor (17).
5. The intelligent torque testing device for the high-speed motor of the new energy automobile is characterized in that an annular magnetorheological damper is connected in series between a coupler (16) and a torque sensor (17), an inner ring of the magnetorheological damper is fixed on a transition shaft through key connection, an outer ring of the magnetorheological damper is fixed inside a mounting groove (15) through an elastic support, a limiting ring (18) is connected to the right side inside the mounting groove (15) through threads, and the left side of the limiting ring (18) is in movable contact with the right side of the torque sensor (17).
6. The intelligent torque testing device for the high-speed motor of the new energy automobile, which is disclosed in claim 4, is characterized in that a plurality of torque sensors (17) are different in specification and are used for adapting to test motors (7) with different specifications, the hysteresis dynamometer (21) is fixed at the top of the supporting frame (19), an output shaft of the hysteresis dynamometer is provided with an adjusting cylinder (22), the driving end of the adjusting cylinder (22) is provided with a mounting frame (23), one side, close to the rotating frame (14), of the mounting frame (23) is provided with a pneumatic clamping jaw (24), the right side of the torque sensors (17) is provided with a positioning groove (25), and the pneumatic clamping jaw (24) is adapted to the positioning groove (25).
7. The intelligent torque testing device for the high-speed motor of the new energy automobile is characterized in that the intelligent testing and analyzing system comprises a testing parameter acquisition module, a shafting dynamic response analysis module and an energy loss analysis module, wherein the testing parameter acquisition module is used for acquiring shafting dynamic response parameters, signal quality parameters and energy loss parameters, and the shafting dynamic response analysis module is used for analyzing shafting stability.
8. The intelligent torque testing device for the high-speed motor of the new energy automobile, according to claim 7, is characterized in that the dynamic response parameters of the shafting comprise a torque fluctuation coefficient, a natural frequency of the shafting, an excitation frequency and a maximum deflection of the shafting, the energy loss parameters comprise mechanical loss and system efficiency, and the mechanical loss comprises bearing friction loss and air resistance loss.
9. The intelligent torque testing device for the high-speed motor of the new energy automobile according to claim 1, wherein the intelligent test analysis system can generate fault codes according to test results, and when the system efficiency deviates And motor bearing temperature And automatically triggering fault early warning.
10. The intelligent torque testing method for the high-speed motor of the new energy automobile is applied to the intelligent torque testing device for the high-speed motor of the new energy automobile, which is characterized by comprising the following steps of: Step one, loading and positioning of a motor, namely placing a test motor (7) to be tested on the top of a test conveying frame (6), starting a motor positioning assembly, namely adjusting the position of a positioning servo electric cylinder (10) through a vertical adjusting sliding table (8) and a horizontal adjusting sliding table (9) to enable a positioning block to be aligned with a positioning hole at the bottom of the test motor (7), wherein the positioning servo electric cylinder (10) drives the positioning block to be inserted into the positioning hole upwards, and telescopic clamping blocks at two sides of the positioning block automatically spring into positioning clamping grooves at the inner wall of the positioning hole to realize rigid fixation of the test motor (7); Step two, conveying the test station, namely starting a servo linear sliding table (4), driving a test conveying frame (6) to slide along a guide sliding rail (5), conveying a test motor (7) to a detection area on the right side inside the test rack (1), and approaching to a fixed frame (13) and a rotating frame (14), wherein the right side of the bottom of the test motor (7) is contacted with a magnetic attraction sliding block (12) on a discharge control sliding table (11); The intelligent test analysis system automatically matches the corresponding coupler (16) and the torque sensor (17) according to the specification of the test motor (7), the rotary control motor (20) drives the rotary frame (14) to rotate, the matched coupler (16) and the torque sensor (17) are transferred from the mounting groove (15) to a test position aligned with the test motor (7), and the limiting ring (18) ensures that the torque sensor (17) is fixed in the mounting groove (15); step four, the detection assembly is connected, namely an adjusting electric cylinder (22) of the hysteresis dynamometer (21) is started to push a mounting frame (23) to move towards a rotating frame (14), a pneumatic clamping jaw (24) on the mounting frame (23) is clamped into a positioning groove (25) on the right side of a torque sensor (17), the rigid connection of the hysteresis dynamometer (21) and the torque sensor (17) is completed, an output shaft of a test motor (7) is inserted into a left side interface of a coupling (16), the right side of the coupling (16) is connected with a detection end of the torque sensor (17), and a serial annular magneto-rheological damper enters a working state to attenuate shafting vibration; Step 5, torque test and parameter collection, namely starting a hysteresis dynamometer (21), simulating the actual running condition of the test motor (7) by adjusting the load, and collecting the instantaneous torque value of the test motor (7) by a torque sensor (17) in real time Synchronous acquisition of rotation speed and motor bearing temperature The test parameter acquisition module of the intelligent test analysis system receives data, and the shafting dynamic response analysis module calculates a torque fluctuation coefficient Deviation of resonance frequency The energy loss analysis module calculates mechanical loss Efficiency of the system ; Step six, data analysis and state evaluation, wherein the comprehensive state evaluation module integrates analysis results such as shafting dynamic response, energy loss and the like, and quantitatively evaluates the performance of the test motor (7), if 、 And is also provided with Judging as a normal one if Automatically generating a fault code, and judging the fault code as an abnormal piece; Step seven, automatic classification and discharging are carried out, namely, a normal piece is powered on by a discharging control sliding table (11) to drive a magnetic attraction sliding block (12), the right side of the bottom of a testing motor (7) is attracted, a positioning servo electric cylinder (10) is driven by a positioning block to move downwards and separate from a positioning hole, the magnetic attraction sliding block (12) drives the testing motor (7) to be transferred to a normal discharging frame (2), then the magnetic attraction sliding block (12) is powered off to complete discharging of the normal piece, the abnormal piece is similarly treated, the magnetic attraction sliding block (12) transfers the testing motor (7) to an abnormal discharging frame (3) to complete discharging of the abnormal piece, and a testing conveying frame (6) is reset to an initial position to prepare for the next testing.

Description

Intelligent torque testing method and device for high-speed motor of new energy automobile Technical Field The invention relates to the technical field of motor testing, in particular to an intelligent torque testing method and device for a high-speed motor of a new energy automobile. Background The high-speed motor of the new energy automobile is used as a core component of a driving system, and the torque output characteristic of the high-speed motor directly influences the power performance, the energy consumption efficiency and the operation safety of the automobile, so that the accurate test of the torque parameters of the high-speed motor is a key link in the motor production and research and development processes. Along with the rapid development of the new energy automobile industry, the high-speed motor develops towards the directions of high rotating speed, wide torque range and multiple normalization, and higher requirements are provided for the suitability, the testing precision and the automation degree of the torque testing device. The existing torque testing device has the defects that the suitability is insufficient, the mechanical structure is manually adjusted when a test object is replaced for a single-specification motor design, the operation is tedious and time-consuming, the batch testing requirement of the motors with multiple specifications is difficult to meet, the testing stability is poor, the torque measurement error is easily increased due to factors such as shaft system vibration and signal interference during high-speed operation, the reliability of test data is affected, the automation degree is low, the motor positioning and the sorting discharging after the testing are dependent on manual operation, the efficiency is low, and the testing result is possibly further affected due to the manual operation error. Therefore, we propose a torque intelligent test method and device for a high-speed motor of a new energy automobile. Disclosure of Invention Aiming at the defects of the prior art, the invention provides an intelligent torque testing method and device for a high-speed motor of a new energy automobile, which are used for solving the technical defects. The intelligent torque testing device for the high-speed motor of the new energy automobile comprises a testing machine frame, a motor positioning assembly, a detecting assembly and an intelligent testing analysis system, wherein the testing machine frame is of a T-shaped structure, a servo linear sliding table is arranged in the middle of the inside of the testing machine frame, a testing conveying frame is arranged at the top of the servo linear sliding table in a sliding mode, a normal discharging frame and an abnormal discharging frame are respectively arranged on two sides of the inside of the testing machine frame, the upper end faces of the normal discharging frame and the abnormal discharging frame are flush with the upper end face of the testing conveying frame, guiding sliding rails are respectively arranged on the front side and the rear side of the inside of the testing machine frame, the bottom of the testing conveying frame is in sliding connection with the guiding sliding rails, the motor positioning assembly is arranged on the testing conveying frame and used for fixing the testing motor, the detecting assembly is arranged on the right side of the testing machine frame and used for testing torque of the testing motor, and the intelligent testing analysis system is used for collecting and analyzing testing parameters and evaluating states of the testing motor. The motor positioning assembly comprises a vertical adjusting sliding table, a horizontal adjusting sliding table and a positioning servo electric cylinder, wherein the vertical adjusting sliding table is symmetrically arranged above the inside of the test conveying frame, the horizontal adjusting sliding table is arranged at the front and rear of the top of the vertical adjusting sliding table in a sliding mode, the positioning servo electric cylinder is arranged at the top of the horizontal adjusting sliding table in a sliding mode, a positioning block is arranged at the top end of a driving shaft of the positioning servo electric cylinder, and positioning holes matched with the positioning block are formed in the periphery of the bottom of the test motor. Preferably, a discharging control sliding table is arranged on the right side of the inner wall of the test rack, two magnetic attraction sliding blocks are arranged on the left side of the discharging control sliding table in a sliding mode, and the magnetic attraction sliding blocks can be electrified to adsorb the right side of the bottom of the test motor and are used for transferring the tested test motor to a normal discharging frame or an abnormal discharging frame. The detection assembly comprises a fixing frame, a rotating frame, a supporting frame, a hysteresis dynamometer and an adjusting