CN106840679A - System for testing motor stalling performance experiment - Google Patents

Abstract

The invention provides a system for testing locked rotor performance of a motor, which comprises a locked rotor clamp assembly, a driving device and a torque flange, wherein the locked rotor clamp assembly is connected with the driving device; the locked rotor clamp assembly comprises a locked rotor base, a brake disc and a torque flange mounting disc, wherein the brake disc is fixedly connected with the torque flange mounting disc, and a plurality of concentrically arranged arc-shaped through grooves are formed in the brake disc; the brake disc is fixed on the locked rotor base through a plurality of bolts and the arc-shaped through grooves; the driving device drives the brake disc to rotate; the torque flange mounting disc is fixedly connected with the torque flange. The system for testing the locked rotor performance of the motor overcomes the defect that the dynamometer needs to perform locked rotor testing, can efficiently test the locked rotor torque characteristic of any point through the locked rotor testing clamp, and avoids the complexity of assembling and disassembling the experimental motor through matching the stepping motor with the locked rotor testing clamp; the motor stalling test device has the advantages of being convenient to disassemble and assemble, high in automation degree, capable of efficiently meeting requirements of a laboratory on motor stalling test experiments and the like.

Description

A system for testing motor stall performance experiment

technical field

The invention belongs to the technical field of motor detection, and in particular relates to a system for testing motor stall performance experiments.

Background technique

The drive motor system is the core component of the power output of electric vehicles, and it is a mandatory inspection item for new vehicle product announcements. It is carried out according to GB/T18488-2006 "Electric Vehicle Motors and Their Controllers", "Stall Torque and Stall Current" It is one of the test contents, which is used to investigate the ability of electric vehicles to start on flat ground or slopes and the system protection function. In addition, the locked-rotor test can also be used to test the "static torque ripple" of the motor system. By adjusting the angle of the output shaft, the range of torque fluctuations at different output angles of the motor at rest can be tested, and the motor can be judged by the size of the torque ripple. and controller pros and cons. The "locked rotor torque and locked rotor current" and "static torque ripple" tests lock the output shaft of the motor at a fixed angle position through an external device, then power on normally, and apply torque to the motor through the controller to the target value, Test torque/voltage,/current/duration. Then change the angle to test the value of the next position point. The "stall torque and stall current" test requires 5 points to be tested evenly on the circumference, and the "static torque ripple" requires more test points, usually more than 20 points.

In the prior art, when performing a locked-rotor test, the output shaft of the motor and the output shaft of the dynamometer are connected through a coupling, and the fixed pin is used to lock the output shaft of the dynamometer. In order to avoid damage to the output shaft of the dynamometer, usually only Two corresponding fixed notches can be set. The disadvantage of this solution is that it is impossible to test the parameters of 5 points without disassembly, and the torque sensor often needs to be recalibrated after the test, and if there is a problem in the test, the dynamometer may be damaged. machine.

Contents of the invention

In view of this, the present invention aims to propose a system for testing motor stall performance experiments to solve the problems that existing stall test devices are easy to cause damage to the dynamometer, inconvenient disassembly and assembly of the motor to be tested, and low detection efficiency. .

In order to achieve the above object, technical solution of the present invention is achieved in that way:

A system for testing motor stall performance experiments, including a stall fixture assembly, a driving device, and a torque flange 8;

The locked-rotor fixture assembly includes a locked-rotor base 6, a brake disc 7 and a torque flange mounting disc 10, the brake disc 7 is fixedly connected to the torque flange mounting disc 10, and the brake disc 7 is opened There are a plurality of concentrically arranged arc-shaped slots; the brake disc 7 is fixed to the locked-rotor base 6 through a plurality of bolts and arc-shaped slots;

The driving device drives the brake disc 7 to rotate;

The torque flange mounting plate 10 is fixedly connected to the torque flange 8 .

Further, the arc-shaped through grooves are evenly distributed on the brake disc 7 .

Preferably, the arc-shaped through groove has two layers, inner and outer.

Further, a friction block 2 is installed between the brake disc 7 and the locked-rotor base 6 .

Further, the drive device includes a stepper motor 1, a worm gear 3 and a torque flange rotating disc 4;

The stepping motor is connected with the torque flange rotating disc 4 through a worm gear 3;

The torque flange rotating disc 4 is fixedly connected to the torque flange mounting disc 10 .

Preferably, the torque flange rotating disc 4 is connected with the torque flange mounting disc 10 through positioning pins.

Further, the stepping motor 1 is controlled by a controller.

Further, the driving device further includes a Hall sensor 5 for detecting the rotation angle of the torque flange rotating disk 4, and the Hall sensor 5 is connected with the controller.

Further, the drive device also includes a mounting bracket, and the Hall sensor 5 is fixed on the mounting bracket.

Preferably, the torque flange rotating disc 4, the torque flange mounting disc 10 and the torque flange 8 are coaxially arranged.

Compared with the prior art, the system for testing the motor stall performance experiment of the present invention has the following advantages:

The system for testing motor stall performance experiments described in the present invention solves the shortcoming of requiring a dynamometer for stall testing. The stall torque characteristics at any point can be efficiently tested through the stall test fixture, and the stepper motor is used to cooperate with the stall test. The rotating test fixture avoids the complexity of the disassembly and assembly of the experimental motor; it can avoid damage to the dynamometer, and has the advantages of convenient disassembly and assembly, high degree of automation, and the ability to efficiently complete the laboratory's requirements for the motor stall test experiment.

Description of drawings

The drawings constituting a part of the present invention are used to provide a further understanding of the present invention, and the schematic embodiments and descriptions of the present invention are used to explain the present invention, and do not constitute an improper limitation of the present invention. In the attached picture:

Fig. 1 is the exploded schematic diagram of the system of testing motor stall performance experiment described in the embodiment of the present invention;

Fig. 2 is the front structure schematic diagram of the system of testing motor stall performance experiment described in the embodiment of the present invention;

Fig. 3 is a schematic diagram of the back structure of the system for testing the motor stall performance experiment described in the embodiment of the present invention.

Explanation of reference signs:

1-stepping motor; 2-friction block; 3-worm gear; 4-torque flange rotating disc; 5-Hall sensor; 6-stall base; 7-brake disc; 8-torque flange; 9 - motor under test; 10-torque flange mounting plate.

detailed description

It should be noted that, in the case of no conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.

In describing the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", " The orientations or positional relationships indicated by "vertical", "horizontal", "top", "bottom", "inner" and "outer" are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and Simplified descriptions, rather than indicating or implying that the device or element referred to must have a particular orientation, be constructed and operate in a particular orientation, and thus should not be construed as limiting the invention. In addition, the terms "first", "second", etc. are used for descriptive purposes only, and should not be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, a feature defined as "first", "second", etc. may expressly or implicitly include one or more of that feature. In the description of the present invention, unless otherwise specified, "plurality" means two or more.

In the description of the present invention, it should be noted that unless otherwise specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection. Connected, or integrally connected; it can be mechanically connected or electrically connected; it can be directly connected or indirectly connected through an intermediary, and it can be the internal communication of two components. Those of ordinary skill in the art can understand the specific meanings of the above terms in the present invention based on specific situations.

The present invention will be described in detail below with reference to the accompanying drawings and examples.

A system for testing motor stall performance experiments, as shown in Figure 1-3, including a stall fixture assembly, a driving device, and a torque flange 8; the stall fixture assembly includes a stall base 6, and a brake disc 7 And the torque flange mounting disc 10, the brake disc 7 is fixedly connected with the torque flange mounting disc 10, the brake disc 7 is provided with a plurality of concentrically arranged arc-shaped through grooves; the brake disc 7 is connected by a plurality of bolts and arc The through slot is fixed on the locked-rotor base 6; the driving device drives the brake disc 7 to rotate; the torque flange mounting disc 10 is fixedly connected to the torque flange 8. In this example, the output shaft of the motor 9 to be tested is fixedly connected to the torque flange mounting plate 10 and the brake disc 7 in sequence through the torque flange 8 . The torque flange 8 is arranged to measure torque.

The arc-shaped through grooves are evenly distributed on the brake disc 7 .

The arc-shaped through groove has two layers inside and outside. In this example, five arc-shaped through grooves are provided on the inner and outer layers, which can improve the firmness of fixing the brake disc 7 and the locked-rotor base 6 . However, the system for testing the motor stall performance experiment provided by the present invention is not limited to the 5-point stall performance test of the motor, but can adjust the length of the arc slot to adjust the number of test points according to the needs of the experiment.

A friction block 2 is installed between the brake disc 7 and the locked-rotor base 6 . The arrangement of the friction block 2 in this example can further improve the firmness of fixing the brake disc 7 and the locked-rotor base 6 .

The driving device includes a stepping motor 1, a worm gear 3 and a torque flange rotating disc 4;

The stepper motor is connected with the torque flange rotating disc 4 through the worm gear 3;

The torque flange rotating disc 4 is fixedly connected with the torque flange mounting disc 10 .

The torque flange rotating disk 4 is connected with the torque flange mounting disk 10 through positioning pins.

The stepper motor 1 is controlled by a controller.

The driving device also includes a Hall sensor 5 for detecting the rotation angle of the torque flange rotating disc 4, and the Hall sensor 5 is connected with the controller.

The driving device also includes a mounting bracket on which the Hall sensor 5 is fixed.

The torque flange rotating disc 4, the torque flange mounting disc 10 and the torque flange 8 are coaxially arranged.

The working process of this example: when performing the locked-rotor test, firstly, the output shaft of the motor 9 to be tested is fixedly connected to the torque flange mounting plate 10 and the brake disc 7 through the torque flange 8, and then the bolts are passed through the brake disc 7, the arc-shaped slot and the friction block 2 are fixed on the locked-rotor base 6, and then the torque flange rotating disc 4 is installed on the rear side of the locked-rotor base 6, and connected with the torque flange mounting plate 10 ,finish installation. Then test and record the data of the first point. After the data of the first point is recorded, loosen the bolts that fix the brake disc 7, and drive the brake disc to rotate through the stepper motor 1 through the preset angle of the stepper motor 1. After a certain angle, tighten the bolts to test the second point. After the completion, loosen the bolts again. After the brake disc is rotated by the same angle through the stepping motor, test the third point, and so on. Quickly perform multi-point stall performance test on the motor in the case of multiple disassembly and assembly of equipment.

The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included in the scope of the present invention. within the scope of protection.

Claims (10)

1. a kind of system of testing of electric motors stall performance test, it is characterised in that：Including stall fixture assembly, drive device and torsion Moments method orchid (8)；

The stall fixture assembly includes stall pedestal (6), brake disc (7) and moment of torsion flange mounting disc (10), the brake disc (7) it is fixedly connected with moment of torsion flange mounting disc (10), multiple arc-shaped slots being arranged concentrically is provided with the brake disc (7)；Institute State brake disc (7) and stall pedestal (6) is fixed on by multiple bolts and arc-shaped slot；

The drive device drives the brake disc (7) to rotate；

Moment of torsion flange mounting disc (10) is affixed with the moment of torsion flange (8).

2. the system of testing of electric motors stall performance test according to claim 1, it is characterised in that：The arc-shaped slot is equal Cloth is arranged in the brake disc (7).

3. the system of testing of electric motors stall performance test according to claim 2, it is characterised in that：The arc-shaped slot is Inside and outside two-layer.

4. the system of the testing of electric motors stall performance test according to claim any one of 1-3, it is characterised in that：The system Brake pad (2) is installed between Moving plate (7) and stall pedestal (6).

5. the system of testing of electric motors stall performance test according to claim 4, it is characterised in that：The drive device bag Include stepper motor (1), worm and wormwheel (3) and moment of torsion flange rotating disk (4)；

The stepper motor is connected by worm and wormwheel (3) with the moment of torsion flange rotating disk (4)；

The moment of torsion flange rotating disk (4) is affixed with moment of torsion flange mounting disc (10) with described.

6. the system of testing of electric motors stall performance test according to claim 5, it is characterised in that：The moment of torsion flange rotation Rotating disk (4) is with moment of torsion flange mounting disc (10) by positioning pin connection.

7. the system of the testing of electric motors stall performance test according to claim 5 or 6, it is characterised in that：The stepping electricity Machine (1) is by controller control.

8. the system of testing of electric motors stall performance test according to claim 7, it is characterised in that：The drive device is also Hall sensor (5) including detecting moment of torsion flange rotating disk (4) rotational angle, the Hall sensor (5) with it is described Controller is connected.

9. the system of testing of electric motors stall performance test according to claim 8, it is characterised in that：The drive device is also Including mounting bracket, the Hall sensor (5) is installed in the mounting bracket.

10. the system of testing of electric motors stall performance test according to claim 9, it is characterised in that：The moment of torsion flange Rotating disk (4), moment of torsion flange mounting disc (10) and moment of torsion flange (8) concentric setting.