CN-122016079-A - Magnetic suspension bearing temperature testing device for vehicle-mounted flywheel battery

CN122016079ACN 122016079 ACN122016079 ACN 122016079ACN-122016079-A

Abstract

The invention relates to the technical field of magnetic suspension bearing testing, and discloses a magnetic suspension bearing temperature testing device for a vehicle-mounted flywheel battery, which comprises a basic platform; the device comprises a high-speed driving assembly, a vacuum environment simulation assembly, a magnetic suspension bearing fixing assembly, a protection device assembly, a rotating shaft connecting assembly and a rotating shaft connecting assembly, wherein the high-speed driving assembly is detachably connected with a base platform, the vacuum environment simulation assembly is detachably connected with the base platform, an isolation sleeve is arranged on the side of the vacuum environment simulation assembly, the high-speed driving assembly and the isolation sleeve are correspondingly arranged, the magnetic suspension bearing fixing assembly is positioned in the vacuum environment simulation assembly, the protection device assembly is positioned on two sides of a bearing to be detected, and the rotating shaft connecting assembly is positioned between the protection device assembly and the isolation sleeve. The invention realizes the steady-state and transient temperature characteristic test of the magnetic suspension bearing under the real operation working condition, and provides a reliable experimental foundation for the thermal characteristic analysis, the structural optimization design, the thermal management strategy formulation and the magneto-thermal coupling model establishment of the magnetic suspension bearing.

Inventors

WANG DONGXIONG
YANG WENBIN
CHEN XIAOBING
LI LIAOYUAN
ZHANG MING
HAN BINGYUAN
WANG BAOHUA

Assignees

湖北汽车工业学院

Dates

Publication Date: 20260512
Application Date: 20260324

Claims (8)

1. A magnetic suspension bearing temperature testing device for a vehicle-mounted flywheel battery is characterized by comprising The base platform is of a cuboid structure, and a plurality of parallel strip-shaped grooves are formed in the top surface of the base platform; the high-speed driving assembly (1) is detachably connected with the base platform through a strip-shaped groove; The vacuum environment simulation assembly (2) is detachably connected with the basic platform through a strip-shaped groove, the vacuum environment simulation assembly (2) is positioned at the side of the high-speed driving assembly (1), an isolation sleeve (209) is arranged at the side of the vacuum environment simulation assembly (2), and the high-speed driving assembly (1) is positioned at the outer side of the vacuum environment simulation assembly (2) and corresponds to the isolation sleeve (209); The magnetic suspension bearing fixing assembly (4), the magnetic suspension bearing fixing assembly (4) is positioned in the vacuum environment simulation assembly (2), a bearing (404) to be detected is arranged in the magnetic suspension bearing fixing assembly (4), and a temperature sensor is arranged in the bearing (404) to be detected; the protection device assembly (3) is positioned in the vacuum environment simulation assembly (2) and positioned at two sides of the bearing (404) to be tested; The rotating shaft connecting assembly (5), the rotating shaft connecting assembly (5) is located between the protecting device assembly (3) and the isolating sleeve (209), and one end of the rotating shaft connecting assembly (5) is fixedly connected with a rotor of the bearing (404) to be detected.
2. The magnetic suspension bearing temperature testing device for the vehicle-mounted flywheel battery, as set forth in claim 1, is characterized in that the high-speed driving assembly (1) comprises a motor base (101) located on the basic platform, the motor base (101) is detachably connected with the basic platform through a strip-shaped groove, the motor base (101) is fixedly connected with a high-speed motor (102) through a bolt, an inner magnetic rotor main body (105) is coaxially arranged at the end part of an output shaft of the high-speed motor (102), the inner magnetic rotor main body (105) is connected with the output shaft of the high-speed motor (102) through a flat key, a plurality of first mounting grooves are formed in the periphery of the inner magnetic rotor main body (105), an inner magnetic rotor permanent magnet (104) is fixedly installed in the first mounting grooves, and the inner magnetic rotor main body (105) and the inner magnetic rotor permanent magnet (104) are located in the isolation sleeve (209).
3. The magnetic suspension bearing temperature testing device for the vehicle-mounted flywheel battery, which is characterized in that the vacuum environment simulation assembly (2) comprises a vacuum cover base (205) detachably connected with the top surface of the basic platform, an auxiliary thermal control module (208) is fixedly connected to the vacuum cover base (205), a vacuum cover upper cover (201) is arranged on the top surface of the vacuum cover base (205), the vacuum cover upper cover (201) and the vacuum cover base (205) are matched to form a sealing cavity, a plurality of connecting fixing structures (206) are arranged between the vacuum cover upper cover (201) and the vacuum cover base (205), the vacuum cover upper cover (201) is made of transparent materials, an infrared transmission window is correspondingly arranged between the vacuum cover upper cover (201) and a temperature measuring position, a vacuum pump joint (202), a vacuum gauge (203) and a thermometer (204) are arranged on the top of the vacuum cover upper cover (201), an electric signal integrated interface (207) is arranged on the side wall of the vacuum cover upper cover (201), one end of an isolation sleeve (209) penetrates through the vacuum cover upper cover (201) and is communicated with the outer side wall (201) in a parallel mode.
4. The device for testing the temperature of the magnetic suspension bearing for the vehicle-mounted flywheel battery according to claim 3, wherein the magnetic suspension bearing fixing assembly (4) comprises a fixing base (401) fixedly connected with the vacuum cover base (205), a plurality of pressing rods (402) are fixedly connected to the top surface of the fixing base (401), an upper pressing block (405) and a lower supporting block (403) which are arranged in parallel are arranged above the fixing base (401), the upper pressing block (405) and the lower supporting block (403) move up and down along the pressing rods (402), the pressing rods (402) penetrate through the upper pressing block (405) and the lower supporting block (403) to be arranged, V-shaped grooves are respectively formed in the bottom surface of the upper pressing block (405) and the top surface of the lower supporting block (403), the bearing (404) to be tested is located in the V-shaped grooves, and rotating nuts are respectively correspondingly arranged on the pressing rods (402) and the top surface of the upper pressing block (405) and the bottom surface of the lower supporting block (403).
5. The magnetic suspension bearing temperature testing device for the vehicle-mounted flywheel battery according to claim 3, wherein the protection device assembly (3) comprises two bearing supporting seats (301) fixedly connected with the vacuum cover base (205), a protection bearing (303) is installed in each bearing supporting seat (301), a bearing end cover (304) is fixedly connected to each bearing supporting seat (301), the bearing end cover (304) is located on one side of each protection bearing (303), a photoelectric reflection type rotating speed sensor (302) is installed on each bearing supporting seat (301) close to the isolation sleeve (209), the photoelectric reflection type rotating speed sensor (302) is arranged corresponding to the rotating shaft connecting assembly (5), and an optical fiber rotating joint support (305) is fixedly connected to one side of the other bearing supporting seat (301).
6. The device for testing the temperature of the magnetic suspension bearing for the vehicle-mounted flywheel battery according to claim 5, wherein the rotating shaft connecting assembly (5) comprises an inner rotating shaft (504) and an outer rotating shaft (505) which are coaxially arranged, inner threads are respectively formed on inner end faces of the inner rotating shaft (504) and the outer rotating shaft (505), the inner rotating shaft (504) and the outer rotating shaft (505) are respectively connected with rotor threads of a bearing (404) to be tested through the inner threads, an outer magnetic rotor main body (502) is arranged at one end, far away from the bearing (404) to be tested, of the inner rotating shaft (504), the outer magnetic rotor main body (502) is connected with the inner rotating shaft (504) through a flat key, a plurality of second mounting grooves are formed on the inner side of the outer magnetic rotor main body (502), outer magnetic rotor permanent magnets (501) are fixedly connected in the second mounting grooves, the outer magnetic rotor permanent magnets (501) are located on the periphery of the isolating sleeve (209), an optical fiber rotary connector (506) is arranged on the side of the outer rotating shaft (505), a rotor part of the optical fiber rotary connector (506) is connected with the outer rotating shaft (305) through a bolt, and the optical fiber rotary connector (305) is fixedly connected with the outer rotary connector.
7. The device for testing the temperature of the magnetic suspension bearing for the vehicle-mounted flywheel battery as claimed in claim 6, wherein the inner rotating shaft (504) and the outer rotating shaft (505) are hollow shaft structures, and radial through holes for leading out the optical fiber wire bundles are formed in the step positions of the rotating shafts of the inner rotating shaft (504) and the outer rotating shaft (505).
8. The device for testing the temperature of the magnetic suspension bearing for the vehicle-mounted flywheel battery as claimed in claim 6, wherein the inner magnetic rotor body (105) and the outer magnetic rotor body (502) are respectively provided with bolt holes, inner hexagonal bolts are connected in the bolt holes in a threaded manner, the inner hexagonal bolts positioned on the inner magnetic rotor body (105) are abutted with the output shaft of the high-speed motor (102), and the inner hexagonal bolts positioned on the outer magnetic rotor body (502) are abutted with the inner rotary shaft (504).

Description

Magnetic suspension bearing temperature testing device for vehicle-mounted flywheel battery Technical Field The invention relates to the technical field of magnetic suspension bearing testing, in particular to a magnetic suspension bearing temperature testing device for a vehicle-mounted flywheel battery. Background The hybrid magnetic suspension bearing has become a core supporting component of a vehicle-mounted flywheel battery system with high energy storage density by virtue of the remarkable advantages of no contact, no friction, no lubrication, low power consumption and high rotating speed. However, the vehicle-mounted working condition puts a severe requirement on the magnetic suspension bearing, namely, the flywheel rotor needs to maintain ultra-high-speed rotation in the vacuum closed cavity to reduce wind loss, and meanwhile, complex road surface excitation in the running process of the vehicle can form multi-dimensional and multi-frequency basic excitation on the bearing-rotor system. Under the working conditions, the ultrahigh-speed rotation can lead to the rapid increase of hysteresis and eddy current loss of the bearing iron core, and the vacuum environment enables heat to be dissipated only through a limited solid conduction path, so that the heat dissipation condition is extremely severe, and the remarkable temperature rise of the bearing stator and the windings, particularly the permanent magnet parts, is extremely easy to cause. The magnetic performance of the permanent magnet is attenuated along with the temperature rise, even irreversible demagnetization occurs, the air gap magnetic field distribution is directly changed, the bearing rigidity and the running stability of the bearing are affected, and a complex magnetic-thermal bidirectional coupling effect is formed. Therefore, the internal three-dimensional transient temperature field distribution of the magnetic suspension bearing under vacuum and high-speed real working conditions is accurately mastered, and is a core premise for evaluating and improving the service performance and the operation reliability of the magnetic suspension bearing. The prior art has obvious defects in the aspect of acquiring related temperature data, namely, the prior art lacks a special in-situ temperature measurement scheme suitable for a vacuum closed environment, the conventional contact thermocouple has the problems of lead and arrangement under vacuum sealing, the non-contact infrared temperature measurement is limited by the difficulty in calibrating the emissivity due to the obstruction of a metal cavity, the multipoint, in-situ and real-time high-precision temperature measurement of key parts in a bearing cannot be realized, the prior magnetic suspension bearing testing device adopts multi-focus static bearing characteristic measurement, the bearing is generally regarded as a cold isothermal model, the temperature rise effect caused by operation loss is completely ignored, the testing parameters cannot reflect material property degradation and magnetic field distortion caused by temperature rise, and thirdly, the temperature actual measurement data is lack, so that the research of a magnetic-thermal coupling mechanism and the multi-physical field coupling analysis only depend on theoretical simulation, and the basis of key experiment verification is lacking, and the forward design and control optimization of a vehicle-mounted magnetic suspension bearing system are severely restricted. Therefore, a magnetic suspension bearing temperature testing device for a vehicle-mounted flywheel battery is provided. Disclosure of Invention The invention aims to provide a magnetic suspension bearing temperature testing device for a vehicle-mounted flywheel battery, which aims to solve or improve at least one of the technical problems. The invention provides a magnetic suspension bearing temperature testing device for a vehicle-mounted flywheel battery, which comprises The base platform is of a cuboid structure, and a plurality of parallel strip-shaped grooves are formed in the top surface of the base platform; The high-speed driving assembly is detachably connected with the basic platform through a strip-shaped groove; The vacuum environment simulation assembly is detachably connected with the basic platform through a strip-shaped groove and is positioned at the side of the high-speed driving assembly, an isolation sleeve is arranged at the side of the vacuum environment simulation assembly, and the high-speed driving assembly is positioned at the outer side of the vacuum environment simulation assembly and is correspondingly arranged with the isolation sleeve; The magnetic suspension bearing fixing assembly is positioned in the vacuum environment simulation assembly, a bearing to be detected is arranged in the magnetic suspension bearing fixing assembly, and a temperature sensor is arranged in the bearing to be detected; The protection device assembly is positio