Online comprehensive test equipment for high-speed driving motor of new energy automobile

Abstract

The invention relates to the technical field of automobile motor testing, and discloses new energy automobile high-speed driving motor online comprehensive testing equipment which comprises a workbench, a testing motor is arranged at the position, close to the left side, of the top of the workbench, a resistance box is fixed to the right side of the top of the workbench in a penetrating mode, and the output end of the testing motor is detachably connected with a rotating rod. One end of the rotating rod penetrates through the resistance box and is fixedly provided with evenly-distributed blades, and the blades are located in the resistance box. By changing the air pressure in the resistance box, the load conditions under different working conditions can be simulated, so that the performance of the motor under various load conditions can be evaluated and tested, the output capacity and efficiency of the motor and the stability during load bearing can be known, and by simulating the load conditions in actual use, the performance of the motor can be evaluated and tested. Whether the design of the test motor meets the requirements can be verified, and the reliability and durability of the motor under different working conditions can be tested by applying different loads.

Description

Technical Field

[0001] The present invention relates to the technical field of automobile motor testing, and in particular to online comprehensive testing equipment for high-speed drive motors of new energy vehicles. Background Art

[0002] The high-speed drive motor of new energy vehicles is one of the most important safety parts in the car. When the car is driving at high speed, its power system is not allowed to have stalling, idling and other phenomena that affect driving safety. Therefore, before the high-speed drive motor is shipped out of the factory, each high-speed motor must undergo performance testing and can only be delivered for use if it passes the test.

[0003] However, modern motor testing equipment is often very complex and expensive, especially when it comes to high-precision measurement and simulation of various working environments, resistance, vibration, and wading, which increases the cost of purchasing and maintaining the equipment; and some test equipment may not be able to fully simulate all the working conditions of new energy vehicle motors in the actual operating environment, such as transient load changes and high-frequency vibrations, which may lead to deviations between the test results and actual usage. Summary of the invention

[0004] In view of the deficiencies in the prior art, the present invention provides an online comprehensive testing device for high-speed drive motors of new energy vehicles, which solves the problem that some testing equipment may not be able to fully simulate all operating conditions of new energy vehicle motors in actual operating environments, such as transient load changes and high-frequency vibrations, thereby causing deviations between test results and actual usage conditions.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solutions: an online comprehensive test device for high-speed drive motors of new energy vehicles, comprising a workbench, a test motor is arranged on the left side of the top of the workbench, a resistance box is penetrated and fixed on the right side of the top of the workbench, the output end of the test motor is detachably connected with a rotating rod, one end of the rotating rod penetrates the resistance box and is fixed with evenly distributed blades, and the blades are located inside the resistance box, a U-shaped platform is arranged at the bottom of the workbench, a supporting platform is arranged at the bottom of the U-shaped platform, an air storage tank is installed on the top of the supporting platform, a vortex compression pump is installed on the right side of the top of the supporting platform, the air inlet end of the vortex compression pump is connected to the air storage tank through an air inlet pipe, and the air outlet end of the vortex compression pump is connected to the resistance box through an air outlet hose; a fastening mechanism and a vibration mechanism arranged below the workbench are arranged below the test motor, and the vibration mechanism is used to simulate vibration conditions.

[0006] Preferably, support legs are fixed at the four corners of the bottom of the U-shaped platform, and the four corners of the supporting platform are fixed to the support legs.

[0007] Preferably, a pressure regulating valve is passed through and fixed on the top of the resistance box, and an air supply valve pipe is passed through and fixed on the front end top of the air storage tank.

[0008] Preferably, the fastening mechanism includes a connecting iron sheet arranged at the bottom of the test motor, and the connecting iron sheet is connected to the workbench through a plurality of sets of mounting bolts.

[0009] Preferably, the bottom of the test motor is detachably connected to an electromagnetic block, and the bottom of the electromagnetic block is detachably connected to the connecting iron sheet.

[0010] Preferably, a guide shell is provided on the left side of the test motor, and the bottom of the guide shell is fixed to the workbench, a screw rod rotates inside the guide shell, the outer diameter of the screw rod is threadedly connected to a moving block, and the moving block is located inside the guide shell and slidably connected thereto.

[0011] Preferably, a rubber pressing block is fixed on the right side of the moving block, and the rubber pressing block is located above the test motor, a driving motor is fixed on the top of the guide shell, and the output end of the driving motor passes through the guide shell and is fixedly connected to the screw rod.

[0012] Preferably, the vibration mechanism includes sliding rods that pass through and slide at the four corners of the top of the workbench, and the bottom ends of the sliding rods are fixed to the U-shaped table, the top ends of the four sliding rods are fixed with limiting plates, and the limiting plates are located on the top of the workbench, and the outer diameters of the four sliding rods are provided with springs, and the springs are located between the workbench and the U-shaped table.

[0013] Preferably, extension plates are fixed on both sides of the workbench, servo motors are fixed on both sides of the U-shaped table, output ends of the servo motors pass through the U-shaped table and are fixed with cams, and the cams are located on the top of the extension plates.

[0014] Preferably, a fixing plate is fixed to the left side of the rear end of the workbench, a stainless steel pipe is fixed to the top of the fixing plate, an atomizing nozzle is fixed to one end of the stainless steel pipe, and the nozzle of the atomizing nozzle faces the test motor, and a water injection pipe is fixed to the bottom of the fixing plate, and the top end of the water injection pipe passes through the fixing plate and is connected to the stainless steel pipe.

[0015] Working principle: First, place the test motor to be tested (i.e., the high-speed drive motor of new energy vehicles) on the connecting iron sheet above the workbench. Then, energize it through the magnetic attraction of the electromagnetic block in the fastening mechanism, so that the internal magnetic field changes, and it is magnetically adsorbed to the connecting iron sheet for preliminary fixation. Then, the output end of the test motor is installed and fixed to the rotating rod. At the same time, the lead screw is driven by the driving motor to rotate. Because the moving block and the lead screw are driven by the action of the thread and the guide shell, the moving block is driven to move. Therefore, the rubber pressing block connected to it moves at the same time, so that it applies pressure to the test motor below, and finally tightens and fixes it to ensure that the test motor is fixed firmly and does not move during the test. At the same time, the test motor drives the blades to rotate through the rotating rod. While the blades rotate, the air in the air storage tank is supplied to the resistance box through the vortex compression pump. The air pressure inside the resistance box is controlled by adjusting the pressure regulating valve, which can change the resistance of the blades when they rotate, thereby simulating the load under different conditions. Since the blades are subject to air resistance when rotating in the resistance box, the test can be simulated. The resistance load encountered by the motor in actual use, therefore, by controlling the air pressure inside the resistance box, the rotation resistance of the test motor can be continuously increased to complete the test under different resistances. When the test motor is undergoing resistance testing, the cam is driven to rotate by the servo motor. Since the cam is located at the top of the extension plate, as the cam rotates, its irregular surface will periodically lift and release the extension plate, causing the workbench to vibrate up and down. Therefore, when the cam's protrusion causes the extension plate to drive the workbench down, the spring will be compressed to achieve a certain degree of downward movement. At the same time, due to the irregular period of the cam, when the cam's protrusion rotates and disengages, the spring will quickly release the pressure to push the workbench back to its original position because it is not under force. In this way, the workbench repeatedly drives the test motor above to vibrate up and down, simulating the vibration condition of the test motor in the actual operating environment. When the test motor is being tested, water is injected into the stainless steel pipe through the water injection pipe, and finally atomized through the atomizing nozzle, atomized into water mist and discharged to the test motor. Therefore, the wading condition of the test motor in the actual operating environment can be simulated.

[0016] The present invention provides an online comprehensive testing device for high-speed drive motors of new energy vehicles. It has the following beneficial effects:

[0017] 1. The present invention can simulate the load conditions under different working conditions by changing the air pressure inside the resistance box, so as to evaluate the performance of the test motor under various load conditions, which is helpful to understand the output capacity, efficiency and stability of the motor under load. By simulating the load conditions in actual use, it can be verified whether the design of the test motor meets the requirements, for example, whether the motor can provide sufficient torque and power under conditions such as high-speed driving or climbing. By applying different loads, the reliability and durability of the motor under different working conditions can be tested, which is helpful to discover potential problems and faults, and make improvements and optimizations.

[0018] 2. The present invention can quickly achieve the initial fixation of the test motor and the connecting iron sheet through the magnetic attraction of the electromagnetic block. This method is simple to operate, does not require the use of additional tools, reduces the time and complexity of the fixing process, and then drives the screw to rotate through the driving motor, drives the moving block and the rubber pressing block connected to it to apply pressure to the test motor, and achieves the final compression and tightening of the test motor. This mechanical fixing method ensures that the motor will not be displaced during the test process, improves the stability and reliability of the fixation, and the position and applied pressure of the moving block can be accurately adjusted due to the use of the screw and threaded structure, which allows the fastening mechanism to adapt to motors of different sizes and shapes, and has high adaptability and flexibility. The dual fixing method of the electromagnetic block and mechanical compression can effectively prevent the motor from loosening or falling off during the test process, ensuring the safety of the test. In addition, the rubber pressing block can evenly distribute the pressure to avoid damage to the motor surface.

[0019] 3. The present invention can comprehensively evaluate the performance of the test motor, including vibration amplitude, frequency, and stability index, by simulating real vibration conditions. This helps to understand the problems that may occur in the test motor in actual work and make corresponding optimizations and improvements. The test motor may be affected by various vibrations during actual use, including mechanical shock and vibration. By simulating these vibration conditions, the reliability and durability of the test motor can be verified to ensure its stability and long-term reliability in the actual working environment. Simulating the vibration condition of the test motor can help detect potential faults or problems, such as looseness, wear, and imbalance. These problems can be discovered and diagnosed in time through vibration, so that corresponding repair and maintenance measures can be taken to improve the availability and reliability of the test motor. By observing and analyzing the vibration characteristics of the workbench and the test motor, a reference can be provided for the design and optimization of the test motor.

[0020] 4. The present invention can simulate the humid or water-related environment that the motor may encounter in reality by atomizing water and discharging it toward the test motor. This helps to test the performance and stability of the motor under different humidity and water contact conditions, and can detect and evaluate the waterproof performance of the test motor, including sealing and waterproof level. Through this simulation test, it can be confirmed whether the motor meets the design requirements and ensure that it can work normally in a humid or watery environment. Long-term exposure to a water mist environment can simulate the corrosion of the motor in a high humidity or water vapor environment, which is very important for evaluating the corrosion resistance of motor materials and coatings, and helps to extend the service life of the motor. By testing the performance of the motor in a water-related environment, potential fault points can be discovered in advance, such as sealing failure and electrical short circuit problems, so that preventive measures can be taken to avoid motor failures in actual use. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0022] Figure 2 It is a rear-view stereoscopic structural schematic diagram of the present invention;

[0023] Figure 3 It is a front view structural schematic diagram of the present invention;

[0024] Figure 4 It is a structural schematic diagram of the workbench and the test motor in the present invention;

[0025] Figure 5 It is a cross-sectional structural schematic diagram of the resistance box in the present invention;

[0026] Figure 6 It is a structural schematic diagram of the workbench and the U-shaped table in the present invention.

[0027] Among them, 1. workbench; 2. test motor; 3. rotating rod; 4. resistance box; 5. pressure regulating valve; 6. blades; 7. U-shaped table; 8. supporting legs; 9. supporting platform; 10. air storage tank; 11. vortex compression pump; 12. air inlet pipe; 13. air outlet hose; 14. air supply valve pipe; 15. connecting iron sheet; 151. mounting bolt; 152. electromagnetic block; 153. guide shell; 154. screw rod; 155. moving block; 156. driving motor; 157. rubber pressing block; 16. sliding rod; 161. limit plate; 162. spring; 163. extension plate; 164. servo motor; 165. cam; 17. fixing plate; 18. stainless steel pipe; 19. atomizing nozzle; 20. water injection pipe. DETAILED DESCRIPTION

[0028] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0029] Please see attached Figure 1 -Attached Figure 6 The embodiment of the present invention provides an online comprehensive test device for high-speed drive motors of new energy vehicles, including a workbench 1, a test motor 2 is arranged on the left side of the top of the workbench 1, a resistance box 4 is penetrated and fixed on the right side of the top of the workbench 1, and the output end of the test motor 2 is detachably connected with a rotating rod 3, one end of the rotating rod 3 penetrates the resistance box 4 and is fixed with evenly distributed blades 6, and the blades 6 are located inside the resistance box 4, a U-shaped platform 7 is arranged at the bottom of the workbench 1, a supporting platform 9 is arranged at the bottom of the U-shaped platform 7, an air storage tank 10 is installed on the top of the supporting platform 9, and a vortex compression pump 11 is installed on the right side of the top of the supporting platform 9, and the vortex compression pump The air inlet end of 11 is connected to the air storage tank 10 through the air inlet pipe 12, and the air outlet end of the vortex compression pump 11 is connected to the resistance box 4 through the air outlet hose 13; a fastening mechanism and a vibration mechanism arranged under the workbench 1 are arranged below the test motor 2, and the vibration mechanism is used to simulate the vibration condition; support legs 8 are fixed at the four corners of the bottom of the U-shaped table 7, and the four corners of the supporting platform 9 are fixed to the support legs 8. The top of the resistance box 4 is penetrated and fixed with a pressure regulating valve 5, and multiple groups of sensors are arranged inside the resistance box 4, which can be a speed sensor and a pressure sensor, etc., and a gas replenishment valve pipe 14 is penetrated and fixed at the top of the front end of the air storage tank 10;

[0030] The test motor 2 drives the blade 6 to rotate through the rotating rod 3. While the blade 6 rotates, the air in the air storage tank 10 is supplied to the resistance box 4 through the vortex compression pump 11. At the same time, the pressure inside the resistance box 4 is detected by the internal pressure sensor, and then the air pressure inside the resistance box 4 is controlled by adjusting the pressure regulating valve 5. The resistance of the blade 6 during rotation can be changed, thereby simulating the load under different conditions. Since the blade 6 will be subject to air resistance when rotating in the resistance box 4, the resistance load encountered by the test motor 2 during actual use can be simulated. When the blade 6 is rotating under resistance, its rotation speed is detected by the rotation speed sensor for later data reference. Therefore, by controlling the air pressure inside the resistance box 4, the rotation resistance of the test motor 2 can be continuously increased, so that it can complete the test under different resistances.

[0031] The fastening mechanism includes a connecting iron sheet 15 arranged at the bottom of the test motor 2, the connecting iron sheet 15 is connected to the workbench 1 by multiple groups of mounting bolts 151, the bottom of the test motor 2 is detachably connected to an electromagnetic block 152, and the bottom of the electromagnetic block 152 is detachably connected to the connecting iron sheet 15, a guide shell 153 is arranged on the left side of the test motor 2, and the bottom of the guide shell 153 is fixed to the workbench 1, a screw rod 154 is rotated inside the guide shell 153, the outer diameter of the screw rod 154 is threadedly connected to a moving block 155, and the moving block 155 is located inside the guide shell 153 and is slidably connected thereto, a rubber pressing block 157 is fixed on the right side of the moving block 155, and the rubber pressing block 157 is located above the test motor 2, a driving motor 156 is fixed to the top of the guide shell 153, and the output end of the driving motor 156 passes through the guide shell 153 and is fixedly connected to the screw rod 154;

[0032] The electromagnetic block 152 in the fastening mechanism is energized by magnetic attraction, so that the internal magnetic field changes, and the electromagnetic block 152 is magnetically attracted to the connecting iron sheet 15 for preliminary fixation, and then the output end of the test motor 2 is installed and fixed to the rotating rod 3. At the same time, the lead screw 154 is driven to rotate by the driving motor 156. Because the moving block 155 and the lead screw 154 are driven to move under the action of the thread and the guide shell 153, the rubber pressing block 157 connected to it moves together, so that it applies pressure to the test motor 2 below, and finally presses and fixes it, ensuring that the test motor 2 is firmly fixed and does not move during the test process;

[0033] The vibration mechanism includes a slide bar 16 that passes through and slides at the four corners of the top of the workbench 1, and the bottom ends of the slide bars 16 are fixed to the U-shaped platform 7, the top ends of the four slide bars 16 are fixed with limit plates 161, and the limit plates 161 are located at the top of the workbench 1, the outer diameters of the four slide bars 16 are provided with springs 162, and the springs 162 are located between the workbench 1 and the U-shaped platform 7, the left and right sides of the workbench 1 are fixed with extension plates 163, the left and right sides of the U-shaped platform 7 are fixed with servo motors 164, the output ends of the servo motors 164 pass through the U-shaped platform 7 and are fixed with cams 165, and the cams 165 are located at the top of the extension plates 163;

[0034] The cam 165 is driven to rotate by the servo motor 164. Since the cam 165 is located at the top of the extension plate 163, as the cam 165 rotates, its irregular surface will periodically lift and release the extension plate 163, causing the workbench 1 to vibrate up and down. Therefore, when the protrusion of the cam 165 causes the extension plate 163 to drive the workbench 1 to press down, the spring 162 will be compressed to achieve a certain degree of downward movement. At the same time, due to the irregular period of the cam 165, when the protrusion of the cam 165 rotates and disengages, the spring 162 will quickly release the pressure to push the workbench 1 to recover because it is in a state without force, so that the workbench 1 repeatedly drives the upper test motor 2 to vibrate up and down, simulating the vibration condition of the test motor 2 in the actual operating environment;

[0035] A fixing plate 17 is fixed to the left side of the rear end of the workbench 1, a stainless steel pipe 18 is fixed to the top of the fixing plate 17, an atomizing nozzle 19 is fixed to one end of the stainless steel pipe 18, and the nozzle of the atomizing nozzle 19 faces the test motor 2, a water injection pipe 20 is fixed to the bottom of the fixing plate 17, and the top end of the water injection pipe 20 passes through the fixing plate 17 and is connected to the stainless steel pipe 18;

[0036] Water is injected into the stainless steel pipe 18 through the water injection pipe 20, and finally atomized through the atomizing nozzle 19, and the atomized water is discharged to the test motor 2, thereby simulating the wading condition of the test motor 2 in the actual operating environment.

[0037] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An online comprehensive testing device for high-speed drive motors of new energy vehicles, comprising a workbench (1), characterized in that: A test motor (2) is arranged on the left side of the top of the workbench (1); a resistance box (4) is penetrated and fixed on the right side of the top of the workbench (1); the output end of the test motor (2) is detachably connected to a rotating rod (3); one end of the rotating rod (3) penetrates the resistance box (4) and is fixed with evenly distributed blades (6), and the blades (6) are located inside the resistance box (4); a U-shaped platform (7) is arranged at the bottom of the workbench (1); a supporting platform (9) is arranged at the bottom of the U-shaped platform (7); An air storage tank (10) is installed on the top of the supporting platform (9), and a vortex compression pump (11) is installed on the right side of the top of the supporting platform (9); the air inlet end of the vortex compression pump (11) is connected to the air storage tank (10) through an air inlet pipe (12), and the air outlet end of the vortex compression pump (11) is connected to the resistance box (4) through an air outlet hose (13); a fastening mechanism is arranged below the test motor (2) and a vibration mechanism is arranged below the workbench (1), and the vibration mechanism is used to simulate a vibration condition.

2. The online comprehensive testing equipment for high-speed drive motors of new energy vehicles according to claim 1 is characterized in that: Support legs (8) are fixed at the four corners of the bottom of the U-shaped platform (7), and the four corners of the supporting platform (9) are fixed to the support legs (8).

3. The online comprehensive testing equipment for high-speed drive motors of new energy vehicles according to claim 1 is characterized in that: A pressure regulating valve (5) is passed through and fixed on the top of the resistance box (4), and an air supply valve pipe (14) is passed through and fixed on the top of the front end of the air storage tank (10).

4. The online comprehensive testing equipment for high-speed drive motors of new energy vehicles according to claim 1 is characterized in that: The fastening mechanism comprises a connecting iron sheet (15) arranged at the bottom of the test motor (2); the connecting iron sheet (15) is connected to the workbench (1) via a plurality of sets of mounting bolts (151).

5. The online comprehensive testing equipment for high-speed driving motor of new energy vehicle according to claim 4 is characterized in that: The bottom of the test motor (2) is detachably connected to an electromagnetic block (152), and the bottom of the electromagnetic block (152) is detachably connected to the connecting iron sheet (15).

6. The online comprehensive testing equipment for high-speed driving motor of new energy vehicle according to claim 4 is characterized in that: A guide shell (153) is arranged on the left side of the test motor (2), and the bottom of the guide shell (153) is fixed to the workbench (1), a screw rod (154) is rotatable inside the guide shell (153), the outer diameter of the screw rod (154) is connected to a moving block (155) by a thread, and the moving block (155) is located inside the guide shell (153) and is slidably connected thereto.

7. The online comprehensive testing equipment for high-speed driving motor of new energy vehicle according to claim 6 is characterized in that: A rubber pressing block (157) is fixed on the right side of the moving block (155), and the rubber pressing block (157) is located above the test motor (2). A driving motor (156) is fixed on the top of the guide shell (153), and the output end of the driving motor (156) passes through the guide shell (153) and is fixedly connected to the screw rod (154).

8. The online comprehensive testing equipment for high-speed driving motor of new energy vehicle according to claim 1 is characterized in that: The vibration mechanism comprises a slide bar (16) penetrating and sliding at the four corners of the top of the workbench (1), and the bottom ends of the slide bars (16) are fixed to the U-shaped platform (7), the top ends of the four slide bars (16) are fixed with limit plates (161), and the limit plates (161) are located on the top of the workbench (1), and the outer diameters of the four slide bars (16) are provided with springs (162), and the springs (162) are located between the workbench (1) and the U-shaped platform (7).

9. The online comprehensive testing equipment for high-speed driving motor of new energy vehicle according to claim 8 is characterized in that: Extension plates (163) are fixed on both left and right sides of the workbench (1), servo motors (164) are fixed on both left and right sides of the U-shaped platform (7), output ends of the servo motors (164) pass through the U-shaped platform (7) and are fixed with cams (165), and the cams (165) are located on the top of the extension plates (163).

10. The online comprehensive testing equipment for high-speed driving motor of new energy vehicle according to claim 1 is characterized in that: A fixing plate (17) is fixed to the left side of the rear end of the workbench (1), a stainless steel pipe (18) is fixed to the top of the fixing plate (17), an atomizing nozzle (19) is fixed to one end of the stainless steel pipe (18), and the nozzle of the atomizing nozzle (19) faces the test motor (2), and a water injection pipe (20) is fixed to the bottom of the fixing plate (17), and the top end of the water injection pipe (20) passes through the fixing plate (17) and is connected to the stainless steel pipe (18).

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