New energy drive motor bearing temperature rise test structure

Abstract

The utility model discloses a new energy drive motor bearing temperature rise test structure which comprises a rotating shaft, a front end cover, a rotor, a stator, a casing and a rear end cover. A stator is arranged on the inner wall of the machine shell, and the rotor is arranged on a rotating shaft installed in the machine shell. The front end cover and the rear end cover are arranged at the two ends of the machine shell respectively, a driving end bearing is arranged on the front end cover at the position where the rotating shaft penetrates through the machine shell, and a floating end bearing is arranged on the rear end cover. An oil seal is arranged on the outer side of the driving end bearing in the front end cover; the end part of the rotating shaft is connected with a thermodetector through a flange plate; and the thermodetector can collect the temperature of the driving end bearing and the floating end bearing. According to the utility model, the temperature rise of the bearing can be accurately tested, and powerful support is provided for timely finding and solving potential risks caused by overhigh temperature of the bearing, so that motor faults caused by bearing failure are effectively avoided, and safe and reliable operation of a new energy automobile is guaranteed.

Description

TECHNICAL FIELD

[0001] The utility model belongs to drive motor technical field especially, it is a kind of new energy drive motor bearing temperature rise test structure. BACKGROUND

[0002] At present, with the maturation of new energy drive motor product, its safety performance is increasingly widely concerned. With the integration and high speed of drive motor platform continue to climb, product and its parts face severe challenges in temperature resistance grade, insulation grade, long life and reliability.

[0003] In the field of new energy vehicles, the working environment of drive motor is complex and changeable, especially under low speed and high torque conditions, a large amount of heat will be generated inside the motor. When the temperature of motor rotor is too high, a series of problems are easily caused, such as shortening the service life of bearing, even causing bearing ablation, sticking and other failure conditions, which further causes the loss of motor rotation function, seriously affecting the safety performance and service life of motor.

[0004] Therefore, it has become a key problem for those skilled in the art to develop a safe and reliable motor structure to ensure that the motor and even the whole vehicle can run safely, stably and reliably. SUMMARY

[0005] The utility model provides a kind of new energy drive motor bearing temperature rise test structure, to solve the test problem of bearing temperature rise in the field of new energy automobile drive motor. Avoid the problem that bearing failure is easily caused due to bearing temperature being too high when new energy automobile drive motor operates, which further causes motor failure, seriously threatens the safety and reliability of vehicle.

[0006] The utility model employs technical scheme as follows: a kind of new energy drive motor bearing temperature rise test structure, including shaft, front end cover, rotor, stator, shell and rear end cover;Stator is equipped on the inner wall of shell, the rotor is arranged on the shaft installed in the inside of shell;The front end cover and the rear end cover are respectively arranged at the both ends of shell, the front end cover where the shaft passes through shell is equipped with driving end bearing, the rear end cover is equipped with floating end bearing;Driving end bearing outside in the front end cover is equipped with oil seal;The end of shaft is connected with temperature measuring instrument by flange plate, the temperature measuring instrument can collect the temperature of driving end bearing and floating end bearing.

[0007] Further, the inside of the shaft is equipped with the central passage of the central shaft passing through the shaft and the first passage, the second passage, the third passage and the fourth passage connected with the central passage;Wherein, the first passage and the second passage lead to the inner and outer rings of driving end bearing, the third passage and the fourth passage lead to the inner and outer rings of floating end bearing.

[0008] Furthermore, a temperature sensor is installed inside the channel hole, with one end of the temperature sensor connected to the inner and outer rings of the drive end bearing and the floating end bearing; the other end of the temperature sensor is connected to a thermometer.

[0009] The beneficial effects of this utility model are as follows: This utility model enables the drive motor of new energy vehicles to test and display the temperature of the inner and outer rings of the two bearings inside the motor under any operating conditions. When the bearing temperature is too high, an early warning can be given and effective measures can be formulated to avoid the bearing being damaged or its lifespan reduced due to excessive temperature. This can ensure the high reliability of the motor, extend its service life and reduce the motor failure rate. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of the structure of this utility model;

[0011] Figure 2 This is a cross-sectional schematic diagram of the rotating shaft in this utility model;

[0012] Figure 3 This is a schematic diagram of the thermometer in this utility model;

[0013] In the diagram: 1-shaft; 2-oil seal; 3-drive end bearing; 4-front end cover; 5-rotor; 6-stator; 7-housing; 8-rear end cover; 9-floating end bearing; 10-fourth channel; 11-flange; 12-thermometer; 13-temperature sensor; 14-third channel; 15-center channel; 16-first channel; 17-second channel. Detailed Implementation

[0014] The present invention will be further described below with reference to the accompanying drawings.

[0015] like Figure 1 As shown, a temperature rise test structure for a new energy drive motor bearing includes a shaft 1, a front cover 4, a rotor 5, a stator 6, a housing 7, and a rear cover 8. The stator 6 is mounted on the inner wall of the housing 7, and the rotor 5 is mounted on the shaft 1 inside the housing 7. The front cover 4 and the rear cover 8 are respectively located at both ends of the housing 7. A drive-end bearing 3 is mounted on the front cover 4 where the shaft 1 passes through the housing 7, and a floating-end bearing 9 is mounted on the rear cover. An oil seal 2 is provided on the outer side of the drive-end bearing 3 inside the front cover 4. The end of the shaft 1 is connected to a thermometer 12 via a flange 11. The shaft 1 has a central channel 15 inside, which passes through the central shaft of the shaft 1 and leads to the outer and inner rings of the drive-end bearing 3 via a first channel 16 and a second channel 17, and to the outer and inner rings of the floating-end bearing 9 via a third channel 14 and a fourth channel 10.

[0016] like Figure 2As shown, one end of the temperature sensor 13 is connected to the inner and outer rings of the drive-end bearing 3 and the floating-end bearing 9 through the first to fourth channels to collect the temperature of the drive-end bearing 3 and the floating-end bearing 9. The other end is connected to the thermometer 12 through the central channel 15. The channels on the rotating shaft 1 can be increased or decreased as needed. The size of the channel holes can also be increased or decreased as needed to adapt to various situations and forms.

[0017] like Figure 3 As shown, the thermometer 12 has multiple channel interfaces for connecting to the temperature sensor 13. The temperature sensor 13 uses thermocouples such as PT100, PT1000, or NTC. The thermometer 12 is provided with bolt mounting holes for connecting and mounting the flange 11.

[0018] This invention can accurately test the temperature rise of bearings, providing strong support for timely detection and resolution of potential risks caused by excessive bearing temperature, thereby effectively avoiding motor failures due to bearing failure and ensuring the safe and reliable operation of new energy vehicles.

Claims

1. A temperature rise test structure for a bearing of a new energy drive motor, comprising a shaft (1), a front end cover (4), a rotor (5), a stator (6), a housing (7), and a rear end cover (8); the stator (6) is provided on the inner wall of the housing (7), and the rotor (5) is mounted on the shaft (1) inside the housing (7); the front end cover (4) and the rear end cover (8) are respectively provided at both ends of the housing (7), and a drive end bearing (3) is provided on the front end cover (4) where the shaft (1) passes through the housing (7), and a floating end bearing (9) is provided on the rear end cover (8); an oil seal (2) is provided on the outer side of the drive end bearing (3) inside the front end cover (4); characterized in that: The end of the rotating shaft (1) is connected to the thermometer (12) via a flange (11). The thermometer (12) can collect the temperature of the drive end bearing (3) and the floating end bearing (9).

2. The temperature rise test structure for a new energy drive motor bearing according to claim 1, characterized in that: The interior of the rotating shaft (1) is provided with a central channel (15) passing through the central shaft of the rotating shaft (1) and a first channel (16), a second channel (17), a third channel (14) and a fourth channel (10) connecting the central channel (15); wherein, the first channel (16) and the second channel (17) lead to the inner and outer rings of the drive end bearing (3), and the third channel (14) and the fourth channel (10) lead to the inner and outer rings of the floating end bearing (9).

3. The temperature rise test structure for a new energy drive motor bearing according to claim 2, characterized in that: Temperature sensors (13) are installed inside the first channel (16), the second channel (17), the third channel (14) and the fourth channel (10). One end of the temperature sensor (13) is connected to the inner and outer rings of the drive end bearing (3) and the floating end bearing (9); the other end of the temperature sensor (13) is connected to the thermometer (12).

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