A dual-motor performance synchronization test device

Abstract

The present invention discloses a dual-motor performance synchronous test device, comprising: a power supply, a power coupling device, a generator, an energy storage device, and a controller; the power output end of the power supply is used to connect to the power input end of the first test motor, the first power input end of the power coupling device is used to connect to the power output end of the first test motor, the second power input end of the power coupling device is used to connect to the power output end of the second test motor, the power output end of the power coupling device is connected to the power input end of the generator, the power input end of the energy storage device is connected to the power output end of the generator, the power output end of the energy storage device is used to connect to the power output end of the second test motor, and the signal end of the controller is used to connect to the signal ends of the first test motor and the second test motor respectively. The present invention can effectively reduce the number of loaders, realize the performance test of two motors simultaneously, improve the test efficiency, and reduce the test energy consumption.

Description

Technical Field

[0001] The invention relates to the field of motor performance testing, and in particular to a dual-motor performance synchronous testing device. Background Art

[0002] Motors are widely used in walking mechanisms and industrial equipment. To ensure that the motor's working performance meets the design specifications, it is usually necessary to conduct tests on the motor's working performance during the product development stage.

[0003] Patent 201811365667.6 discloses an electric vehicle motor performance test bench, in which upper and lower components are respectively arranged at corresponding workstations corresponding to the upper and lower fixtures, and the upper and lower components are connected by a transmission mechanism and operate simultaneously, and different sensors are respectively arranged in the upper and lower components, so that the electric vehicle motor performance test bench of the present invention can be used to measure the performance indicators of different types of motors, so as to achieve multiple uses of one machine, save the user's experimental equipment cost and space cost, and facilitate testing.

[0004] Patent 202010927840.8 discloses a drive motor performance test environment chamber, which can improve the stability of the test drive motor, improve the safety of the test drive motor and improve the test efficiency.

[0005] From the existing patents related to motor performance test devices, it can be seen that the existing performance test devices are designed for single motor performance testing and cannot perform performance tests on two motors at the same time. Moreover, when testing multiple motors, it is necessary to provide a separate power supply for each motor, which consumes a lot of electricity.

[0006] Therefore, how to achieve synchronous performance testing of multiple motors and reduce the energy consumption of multiple motor tests has become a technical problem that needs to be urgently solved by technical personnel in this field. Summary of the invention

[0007] The present invention provides a dual-motor performance synchronous test device, which is used to solve the technical problems that the prior art cannot carry out performance tests on multiple motors at the same time and the energy consumption of multiple motor tests is serious.

[0008] In order to solve the above technical problems, the technical solution proposed by the present invention is:

[0009] A dual-motor performance synchronous test device, comprising: a power supply, a power coupling device, a generator, an energy storage device and a controller;

[0010] The power output terminal of the power supply is used to connect to the power input terminal of the first test motor to provide electrical energy for the first test motor to conduct tests; the first power input terminal of the power coupling device is used to connect to the power output terminal of the first test motor, the second power input terminal of the power coupling device is used to connect to the power output terminal of the second test motor, and the power output terminal of the power coupling device is connected to the power input terminal of the generator. After coupling the powers of the first test motor and the second test motor, the power is transmitted to the generator to drive the generator to generate electricity;

[0011] The power input terminal of the energy storage device is connected to the power output terminal of the generator, and the power output terminal of the energy storage device is used to connect to the power input terminal of the second test motor to store the electrical energy generated by the generator and provide electrical energy for the tests of the second test motor;

[0012] The signal terminal of the controller is used to connect to the signal terminals of the first test motor and the second test motor respectively, and is used to send test instructions to control the first test motor and the second test motor to conduct synchronous tests.

[0013] Preferably, a clutch is further included. The power output terminal of the power coupling device is connected to the power input terminal of the generator through the clutch, and the signal terminal of the clutch is connected to the signal terminal of the controller; the controller is used for: controlling the clutch to conduct the power transmission line between the power coupling device and the generator when conducting the synchronous test of the motor performance; when not conducting the synchronous performance test of the motor, controlling the clutch to disconnect the power transmission line between the power coupling device and the generator.

[0014] Preferably, a first voltage measuring device and a second voltage measuring device are further included; the signal terminals of the first voltage measuring device and the second voltage measuring device are both connected to the signal terminal of the controller; the first voltage measuring device is used to be installed at the power input terminal of the first test motor to measure the first working voltage of the first test motor and send the measured first working voltage to the controller; the second voltage measuring device is used to be installed at the power input terminal of the second test motor to measure the second working voltage of the second test motor and send the measured second working voltage to the controller.

[0015] Preferably, it further includes a first current measuring device and a second current measuring device; the signal terminals of the first current measuring device and the second current measuring device are both connected to the signal terminal of the controller; the first current measuring device is used to be installed at the power output end of the first test motor to measure the first working current of the first test motor and send the measured first working current to the controller; the second current measuring device is used to be installed at the power output end of the second test motor to measure the second working current of the second test motor and send the measured second working current to the controller.

[0016] Preferably, it further includes a first temperature sensor and a second temperature sensor, the control terminals of the first temperature sensor and the second temperature sensor are both connected to the control terminal of the controller; the first temperature sensor is used to be installed on the first test motor to measure the first working temperature of the first test motor and send the measured first working temperature to the controller; the second temperature sensor is used to be installed on the second test motor to measure the second working temperature of the second test motor and send the measured second working temperature to the controller.

[0017] Preferably, it further includes a first speed measuring device and a second speed measuring device, the signal terminals of the first speed measuring device and the second speed measuring device are both connected to the signal terminal of the controller; the first speed measuring device is used to be installed on the rotor of the first test motor to measure the first speed of the first test motor and send the first speed of the first test motor to the controller; the second speed measuring device is used to be installed on the rotor of the second test motor to measure the second speed of the second test motor and send the second speed of the second test motor to the controller.

[0018] Preferably, the controller includes a control module, a calculation module and an evaluation module;

[0019] The control module is used to send the same speed control instruction to the first test motor and the second test motor to control the first test motor and the second test motor to perform a performance synchronization test;

[0020] The calculation module is used to: calculate the first input power of the first test motor according to the first working current and the first working voltage received in the performance synchronization test, and calculate the first input power of the second test motor according to the second working current and the second working voltage received in the performance synchronization test; the evaluation module is used to compare the first working temperature and the second working temperature received in the performance synchronization test, and judge whether the temperature difference between the first working temperature and the second working temperature is within a preset temperature difference range; compare the first rotational speed and the second rotational speed received in the performance synchronization test, and judge whether the rotational speed difference between the first rotational speed and the second rotational speed is within a preset rotational speed difference range; compare the first input power and the second input power received in the performance synchronization test, and judge whether the power difference between the first input power and the second input power is within a preset power difference range. When the temperature difference is within the preset temperature difference range, the rotational speed difference is within the preset rotational speed difference range, and the power difference is within the preset power difference range, it is determined that the synchronization performance of the first test motor and the second test motor is qualified.

[0021] Preferably, it further includes a torque and rotational speed measuring device. The signal end of the torque and rotational speed measuring device is connected to the controller. The torque and rotational speed measuring device is installed at the power input end of the generator and is used to measure the input torque and rotational speed of the generator, and send the input torque and rotational speed of the generator to the controller. The controller calculates the input power of the generator according to the input torque and rotational speed.

[0022] Preferably, when the performance tests of the first test motor and the second test motor are carried out simultaneously, power loading is realized through the generator.

[0023] Preferably, the rated power P1r of the first test motor and the rated power P2r of the second test motor are both less than the rated power Per of the generator, and (P1r + P2r) < Per.

[0024] The present invention has the following beneficial effects:

[0025] 1. In the dual-motor performance synchronization test device of the present invention, a set of loading devices is shared by two test motors through a power coupling device, effectively reducing the number of loaders, and the performance tests of the two motors can be carried out simultaneously, improving the test efficiency. In addition, the test motors are loaded through the generator, and the generated electric energy is stored in the energy storage device and used to provide energy for the second test motor, realizing the recycling of energy and reducing the test energy consumption.

[0026] 2. In a preferred embodiment, the present invention realizes the connection and disconnection during the test process by setting a clutch, enabling the controller to start the first test motor alone, or start the second test motor alone, or start the first test motor and the second test motor simultaneously according to the test requirements, thereby improving the application range of the test device.

[0027] In addition to the objectives, features, and advantages described above, the present invention has other objectives, features, and advantages. The following will refer to the accompanying drawings to further elaborate on the present invention in detail. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] The drawings forming a part of this application are used to provide a further understanding of the present invention. The schematic embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation to the present invention. In the drawings:

[0029] Figure 1 is a schematic structural diagram of a dual-motor performance synchronization test device provided by an embodiment of the present invention;

[0030] Labels in the figure:

[0031] 1. Power supply; 2. First voltage measuring device; 3. First test motor; 4. First current measuring device; 5. Power coupling device; 6. Clutch; 7. Torque and speed measuring device; 8. Generator; 9. Energy storage device; 10. Second current measuring device; 11. Second test motor; 12. Second voltage measuring device; 13. Controller. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0032] The following will elaborate on the embodiments of the present invention in detail with reference to the accompanying drawings. However, the present invention can be implemented in many different ways defined and covered by the claims.

[0033] Embodiment 1:

[0034] This embodiment discloses a dual-motor performance synchronization test device, including: a power supply 1, a power coupling device 5, a generator 8, an energy storage device 9, and a controller 13;

[0035] The power output end of the power supply 1 is used to connect to the power input end of the first test motor 3 to provide electrical energy for the first test motor 3 to conduct tests; the first power input end of the power coupling device 5 is used to connect to the power output end of the first test motor 3, the second power input end of the power coupling device 5 is used to connect to the power output end of the second test motor 11, and the power output end of the power coupling device 5 is connected to the power input end of the generator 8 to couple the power of the first test motor 3 and the second test motor 11 and then transmit it to the generator 8 to drive the generator 8 to generate electricity;

[0036] The power input terminal of the energy storage device 9 is connected to the power output terminal of the generator 8, and the power output terminal of the energy storage device 9 is used to be connected to the power input terminal of the second test motor 11 to store the electric energy generated by the generator 8 and provide electric energy for the test of the second test motor 11;

[0037] The signal terminal of the controller 13 is used to be respectively connected to the signal terminals of the first test motor 3 and the second test motor 11, and is used to send test instructions to control the first test motor 3 and the second test motor 11 to perform synchronous tests.

[0038] In the dual-motor performance synchronous test device of the present invention, a set of loading devices is shared by two test motors through the power coupling device 5, effectively reducing the number of loaders, and the performance tests of the two motors can be carried out simultaneously, improving the test efficiency. In addition, the test motors are loaded through the generator 8, and the generated electric energy is stored in the energy storage device 9 at the same time, and energy is provided for the second test motor 11, realizing the recycling of energy and reducing the test energy consumption.

[0039] Embodiment 2:

[0040] Embodiment 2 is a preferred embodiment of Embodiment 1. The difference between it and Embodiment 1 is that the specific structure of the dual-motor performance synchronous test device is expanded:

[0041] As Figure 1As shown in the figure, a dual-motor performance synchronization test device is disclosed in this embodiment, including: a power supply 1, a power coupling device 5, a clutch 6, a generator 8, an energy storage device 9, a controller 13, a first voltage measurement device 2, a second voltage measurement device 12, a first current measurement device 4, a second current measurement device 10, and a torque and speed measurement device 7; the power output terminal of the power supply 1 is used to connect to the power input terminal of the first test motor 3, the first power input terminal of the power coupling device 5 is used to connect to the power output terminal of the first test motor 3, the second power input terminal of the power coupling device 5 is used to connect to the power output terminal of the second test motor 11, and the power output terminal of the power coupling device 5 is connected to the power input terminal of the generator 8 through the clutch 6; the power input terminal of the energy storage device 9 is connected to the power output terminal of the generator 8, and the power output terminal of the energy storage device 9 is used to connect to the power input terminal of the second test motor 11. The first voltage measurement device 2 is used to be installed at the power input terminal of the first test motor 3, the second voltage measurement device 12 is used to be installed at the power input terminal of the second test motor 11, the first current measurement device 4 is used to be installed at the power output terminal of the first test motor 3, the second current measurement device 10 is used to be installed at the power output terminal of the second test motor 11, the torque and speed measurement device 7 is installed at the power input terminal of the generator 8, and the signal terminals of the first voltage measurement device 2, the second voltage measurement device 12, the first current measurement device 4, the second current measurement device 10, and the torque and speed measurement device 7 are all connected to the signal terminal of the controller 13 (not marked in the figure), the signal terminal of the controller 13 is also connected to the signal terminal of the clutch 6, and the signal terminal of the controller 13 is also used to connect to the signal terminals of the first test motor 3 and the second test motor 11.

[0042] The working process and working principle of the dual-motor performance synchronization test device are as follows:

[0043] Before the test, the clutch 6 is in the off state under the control of the controller 13;

[0044] According to the test requirements, the controller 13 can start the first test motor 3 alone, or start the second test motor 11 alone, or start the first test motor 3 and the second test motor 11 simultaneously;

[0045] During the start-up process, the first test motor 3 is powered by the power supply 1, and the second test motor 11 is powered by the energy storage device 9; during the test process, the clutch 6 is in the on state under the control of the controller 13, and the output powers of the first test motor 3 and the second test motor 11 are jointly used as the input power of the generator 8 after passing through the power coupling device 5, and the electric energy output by the generator 8 is stored in the energy storage device 9;

[0046] The first voltage measuring device 2 is used to measure the first operating voltage U1 of the first test motor 3 and send the first operating voltage U1 to the controller 13; the second voltage measuring device 12 is used to measure the second operating voltage U2 of the second test motor 11 and send the second operating voltage U2 to the controller 13;

[0047] The first current measuring device 4 is used to measure the first operating current I1 of the first test motor 3 and send the first operating current I1 to the controller 13; the second current measuring device 10 is used to measure the second operating current I2 of the second test motor 11 and send the second operating current I2 to the controller 13;

[0048] The torque and speed measuring device 7 is used to measure the input torque and speed of the generator 8 and send the input torque and speed of the generator 8 to the controller 13;

[0049] The calculation module of the controller 13 is used to: calculate the first input power P1 of the first test motor 3 = U1 × I1; calculate the second input power P2 of the second test motor 11 = U2 × I2, and calculate the input power P of the generator 8 e = T × n;

[0050] To ensure that the first test motor 3 and the second test motor 11 simultaneously achieve full-power tests, the rated power P of the first test motor 3 1r and the rated power P of the second test motor 11 2r are both less than the rated power P of the generator 8 er , and (P 1r + P 2r ) < P er .

[0051] In a preferred embodiment, the present invention further includes a first temperature sensor, a second temperature sensor, a first speed measuring device, and a second speed measuring device. The control ends of the first temperature sensor, the second temperature sensor, the first speed measuring device, and the second speed measuring device are all connected to the control end of the controller 13; the first temperature sensor is used to be installed on the first test motor 3 to measure the first operating temperature of the first test motor 3 and send the measured first operating temperature to the controller 13; the second temperature sensor is used to be installed on the second test motor 11 to measure the second operating temperature of the second test motor 11 and send the measured second operating temperature to the controller 13;

[0052] The first rotational speed measuring device is used to be installed on the rotor of the first test motor 3 to measure the first rotational speed of the first test motor 3 and send the first rotational speed of the first test motor 3 to the controller 13; the second rotational speed measuring device is used to be installed on the rotor of the second test motor 11 to measure the second rotational speed of the second test motor 11 and send the second rotational speed of the second test motor 11 to the controller 13.

[0053] The controller 13 further includes an evaluation module. The evaluation module is used to compare the first operating temperature and the second operating temperature received in the performance synchronization test, and determine whether the temperature difference between the first operating temperature and the second operating temperature is within a preset temperature difference range; compare the first rotational speed and the second rotational speed received in the performance synchronization test, and determine whether the rotational speed difference between the first rotational speed and the second rotational speed is within a preset rotational speed difference range; compare the first input power and the second input power received in the performance synchronization test, and determine whether the power difference between the first input power and the second input power is within a preset power difference range. When the temperature difference is within the preset temperature difference range, the rotational speed difference is within the preset rotational speed difference range, and the power difference is within the preset power difference range, it is determined that the synchronization performance of the first test motor 3 and the second test motor 11 is qualified.

[0054] In summary, the present invention provides a test device with a simple structure that can conduct performance tests on two motors simultaneously. The device cleverly uses a power coupling device 5 to share a set of loading devices for two test motors, effectively reducing the number of loaders, and can conduct performance tests on two motors simultaneously, improving the test efficiency; the device cleverly realizes the connection and disconnection of the test process by setting a clutch 6; the device cleverly uses a generator 8 to load the test motor, stores the generated electric energy in an energy storage device 9 at the same time, and provides energy for the second test motor 11, realizing the recycling of energy and reducing the test energy consumption.

[0055] The above are only the preferred embodiments of the present invention and are not used to limit the present invention. For those skilled in the art, the present invention can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A dual-motor performance synchronization test device, characterized in that, Comprising: a power supply, a power coupling device, a generator, an energy storage device, and a controller; The electrical energy output terminal of the power supply is used to connect to the electrical energy input terminal of the first test motor to provide electrical energy for the first test motor to conduct tests; the first power input terminal of the power coupling device is used to connect to the power output terminal of the first test motor, the second power input terminal of the power coupling device is used to connect to the power output terminal of the second test motor, and the power output terminal of the power coupling device is connected to the power input terminal of the generator to couple the power of the first test motor and the second test motor and then transmit it to the generator to drive the generator to generate electricity; The electrical energy input terminal of the energy storage device is connected to the electrical energy output terminal of the generator, and the electrical energy output terminal of the energy storage device is used to connect to the electrical energy input terminal of the second test motor to store the electrical energy generated by the generator and provide electrical energy for the test of the second test motor; The signal terminal of the controller is used to connect to the signal terminals of the first test motor and the second test motor respectively, and is used to send test instructions to control the first test motor and the second test motor to conduct synchronous tests.

2. The dual-motor performance synchronization test device according to claim 1, characterized in that, It further includes a clutch. The power output terminal of the power coupling device is connected to the power input terminal of the generator through the clutch, and the signal terminal of the clutch is connected to the signal terminal of the controller; the controller is used to: control the clutch to conduct the power transmission line between the power coupling device and the generator when conducting the synchronous test of the motor performance; When not conducting the synchronous performance test of the motor, control the clutch to disconnect the power transmission line between the power coupling device and the generator.

3. The dual-motor performance synchronization test device according to claim 1, characterized in that, It further includes a first voltage measuring device and a second voltage measuring device; the signal terminals of the first voltage measuring device and the second voltage measuring device are both connected to the signal terminal of the controller; the first voltage measuring device is used to be installed at the electrical energy input terminal of the first test motor to measure the first working voltage of the first test motor and send the measured first working voltage to the controller; 4. The dual-motor performance synchronization test device according to claim 3, characterized in that, It further includes a first current measuring device and a second current measuring device; the signal terminals of the first current measuring device and the second current measuring device are both connected to the signal terminal of the controller; the first current measuring device is used to be installed at the electrical energy output terminal of the first test motor to measure the first working current of the first test motor and send the measured first working current to the controller; The second current measuring device is used to be installed at the electrical energy output terminal of the second test motor to measure the second working current of the second test motor and send the measured second working current to the controller.

5. The dual-motor performance synchronization test device according to claim 4, characterized in that, It further includes a first temperature sensor and a second temperature sensor. The control terminals of the first temperature sensor and the second temperature sensor are both connected to the control terminal of the controller. The first temperature sensor is used to be installed on the first test motor to measure the first operating temperature of the first test motor and send the measured first operating temperature to the controller. The second temperature sensor is used to be installed on the second test motor to measure the second operating temperature of the second test motor and send the measured second operating temperature to the controller.

6. The dual-motor performance synchronization test device according to claim 5, characterized in that, It further includes a first rotational speed measuring device and a second rotational speed measuring device. The signal terminals of the first rotational speed measuring device and the second rotational speed measuring device are both connected to the signal terminal of the controller. The first rotational speed measuring device is used to be installed on the rotor of the first test motor to measure the first rotational speed of the first test motor and send the first rotational speed of the first test motor to the controller. The second rotational speed measuring device is used to be installed on the rotor of the second test motor to measure the second rotational speed of the second test motor and send the second rotational speed of the second test motor to the controller.

7. The dual-motor performance synchronization test device according to claim 6, characterized in that, The controller includes a control module, a calculation module and an evaluation module. The control module is used to send the same rotational speed control instruction to the first test motor and the second test motor to control the first test motor and the second test motor to perform a performance synchronization test. The calculation module is used to: calculate the first input power of the first test motor according to the first operating current and the first operating voltage received during the performance synchronization test, and calculate the second input power of the second test motor according to the second operating current and the second operating voltage received during the performance synchronization test. The evaluation module is used to compare the first operating temperature and the second operating temperature received during the performance synchronization test, and judge whether the temperature difference between the first operating temperature and the second operating temperature is within a preset temperature difference range. Compare the first rotational speed and the second rotational speed received during the performance synchronization test, and judge whether the rotational speed difference between the first rotational speed and the second rotational speed is within a preset rotational speed difference range. Compare the first input power and the second input power received during the performance synchronization test, and judge whether the power difference between the first input power and the second input power is within a preset power difference range. When the temperature difference is within the preset temperature difference range, and the rotational speed difference is within the preset rotational speed difference range, and the power difference is within the preset power difference range, it is determined that the synchronization performance of the first test motor and the second test motor is qualified.

8. The dual-motor performance synchronization test device according to claim 1, characterized in that, It further includes a torque rotational speed measuring device. The signal terminal of the torque rotational speed measuring device is connected to the controller. The torque rotational speed measuring device is installed at the power input end of the generator and is used to measure the input torque and rotational speed of the generator and send the input torque and rotational speed of the generator to the controller. The controller calculates the input power of the generator according to the input torque and rotational speed.

9. The dual-motor performance synchronization test device according to claim 1, characterized in that, When the first test motor and the second test motor conduct performance tests simultaneously, power loading is achieved through the generator.

10. The dual-motor performance synchronization test device according to claim 1, characterized in that, The rated power P1r of the first test motor and the rated power P2r of the second test motor are both less than the rated power Per of the generator, and (P1r + P2r) < Per.

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