New energy motor test bench system and test method

Abstract

The invention belongs to the technical field of motor testing, and discloses a new energy motor test bench system which comprises an upper computer, a PLC cabinet, a variable frequency driving cabinet, a first loading motor and a second loading motor, the upper computer is electrically connected with the PLC cabinet, the PLC cabinet is electrically connected with the variable frequency driving cabinet, the first loading motor is electrically connected with the variable frequency driving cabinet, and the second loading motor is electrically connected with the variable frequency driving cabinet. The variable frequency driving cabinet is electrically connected with the first loading motor and the second loading motor, and the upper computer is also electrically connected with the tested motor; the upper computer sends an operation instruction to the PLC cabinet, the PLC cabinet sends a clamping signal to the variable-frequency driving cabinet, the variable-frequency driving cabinet controls the first loading motor and the second loading motor to clamp the tested motor, meanwhile, the variable-frequency driving cabinet controls the first loading motor and the second loading motor to operate and test the working condition of the tested motor, and meanwhile, the variable-frequency driving cabinet controls the first loading motor and the second loading motor to operate and test the working condition of the tested motor. The upper computer collects working condition data of the tested motor. The rotating speed can be tested in a motor load state, and the types of tested motors are diversified.

Description

Technical Field

[0001] The present invention belongs to the technical field of motor testing, and particularly relates to a new energy motor test bench system and a test method. Background Art

[0002] The motor test bench is an important device for testing and verifying the performance of automotive parts and the whole vehicle. With the continuous development of automotive electronic technology, as the core part of new energy equipment, the performance of the new energy motor has an extremely important impact on the entire equipment. Therefore, a suitable new energy motor test system is particularly important. Summary of the Invention

[0003] Aiming at the deficiencies of the prior art, the purpose of the present invention is to provide a new energy motor test bench system and a test method, which solve the problems in the background art.

[0004] The purpose of the present invention can be achieved by the following technical solutions:

[0005] A new energy motor test bench system, characterized in that the system includes a host computer, a PLC cabinet, a frequency conversion drive cabinet, a first loading motor, and a second loading motor. The host computer is electrically connected to the PLC cabinet, the PLC cabinet is electrically connected to the frequency conversion drive cabinet, the frequency conversion drive cabinet is electrically connected to the first loading motor and the second loading motor, and the host computer is also electrically connected to the motor under test;

[0006] The host computer sends an operation instruction to the PLC cabinet, the PLC cabinet sends a clamping signal to the frequency conversion drive cabinet, the frequency conversion drive cabinet controls the first loading motor and the second loading motor to clamp the motor under test. At the same time, the frequency conversion drive cabinet controls the first loading motor and the second loading motor to run to test the working conditions of the motor under test. At the same time, the host computer collects the working condition data of the motor under test.

[0007] In a preferred example of the present invention, it can be further configured that: the motor under test includes a test motor and a motor controller installed on the test motor and electrically connected to the test motor.

[0008] In a preferred example of the present invention, it can be further configured that: the motor under test further includes an RFID module, and the RFID module is fixedly installed on the test motor.

[0009] In a preferred example of the present invention, it can be further configured that: it further includes an NVH test computer, and the NVH test computer is electrically connected to the host computer and a sound sensor.

[0010] In a preferred embodiment, the present invention can be further configured to further include a monitoring module, which is electrically connected to the host computer.

[0011] In a preferred embodiment, the present invention can be further configured to further include a high-voltage power supply, which is electrically connected to the motor controller of the motor under test and the host computer.

[0012] In a preferred embodiment, the present invention can be further configured to further include a low-voltage power supply, which is electrically connected to the motor controller of the motor under test and the host computer.

[0013] In a preferred embodiment, the present invention can be further configured to further include a chiller, which is electrically connected to the host computer, and the cooling pipeline of the chiller is communicated with the cooling pipeline of the motor controller.

[0014] The explanations of the nouns, conjunctions or adjectives involved in the above technical solutions are as follows:

[0015] Fixed connection means that after the parts or components are fixed, there is no relative movement. It is divided into two types: detachable connection and non-detachable connection.

[0016] (1) Detachable connection uses screws, splines, wedge pins, etc. to fix the parts together. This connection method can be disassembled during maintenance and will not damage the parts. However, the specifications of the connecting parts used must be correct (such as the length of bolts, keys, wedge pins), and they must be tightened properly.

[0017] (2) Non-detachable connection mainly refers to welding, riveting and mortise fitting, etc. Since it needs to be forged, sawed or oxy-cut to be disassembled during maintenance or replacement, the spare parts generally cannot be used twice. At the same time, during connection, attention should be paid to process quality, technical inspection and remedial measures (such as correction, polishing, etc.).

[0018] Threaded connection means a detachable connection that connects the connected parts together with threaded parts (or the threaded parts of the connected parts).

[0019] Sliding connection means that two objects are in contact but not fixed, and they can slide relative to each other.

[0020] Rotational connection means that the connection between parts allows the parts to rotate relative to each other.

[0021] The beneficial effects of the present invention:

[0022] 1. It can test the rotational speed under the condition of motor load, and the tested motor models are diverse.

[0023] 2. The motor under test is placed on the test system and executed automatically without manual operation, reducing costs; effectively reducing rework and redundant work caused by barcode problems; detailed test process data, automatic judgment of test results, and simple and convenient operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, for those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0025] Figure 1 is the frame diagram of the motor bench test system according to the embodiment of the present invention;

[0026] Figure 2 is the flow chart of the motor bench test according to the embodiment of the present invention;

[0027] Figure 3 is the flow chart of barcode feedback according to the embodiment of the present invention.

[0028] Reference numerals: 1, host computer; 2, PLC cabinet; 3, variable frequency drive cabinet; 4, first loading motor; 5, second loading motor; 6, motor under test; 61, test motor; 62, motor controller; 63, RFID module; 7, NVH test computer; 8, monitoring module; 9, high-voltage power supply; 10, low-voltage power supply; 11, chiller. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0029] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts belong to the scope of protection of the present invention.

[0030] In the description of the present invention, it should be understood that the terms "opening", "upper", "lower", "thickness", "top", "middle", "length", "inner", "periphery", etc. indicating the orientation or positional relationship are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the components or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation of the present invention.

[0031] As Figures 1 to 3As shown in the figure, a new energy motor test bench system includes a host computer 1, a PLC cabinet 2, a frequency conversion drive cabinet 3, a first loading motor 4, and a second loading motor 5. The host computer 1 is electrically connected to the PLC cabinet 2, the PLC cabinet 2 is electrically connected to the frequency conversion drive cabinet 3, the frequency conversion drive cabinet 3 is electrically connected to the first loading motor 4 and the second loading motor 5, and the host computer 1 is also electrically connected to the motor under test 6;

[0032] The host computer 1 sends operation instructions to the PLC cabinet 2, the PLC cabinet 2 sends clamping signals to the frequency conversion drive cabinet 3, the frequency conversion drive cabinet 3 controls the first loading motor 4 and the second loading motor 5 to clamp the motor under test 6. At the same time, the frequency conversion drive cabinet 3 controls the first loading motor 4 and the second loading motor 5 to run to test the working conditions of the motor under test 6. At the same time, the host computer 1 collects the working condition data of the motor under test 6.

[0033] In an embodiment of the present invention, the motor under test 6 includes a test motor 61 and a motor controller 62 installed on the test motor 61 and electrically connected to the test motor 61. The motor controller 62 is used to control the operation of the test motor 61.

[0034] In an embodiment of the present invention, the motor under test 6 further includes an RFID module 63, and the RFID module 63 is fixedly installed on the test motor 61. The RFID module 63 contains information of the motor under test 6 and is used to be recognized by the reader on the PLC cabinet 2. When in use, the PLC cabinet 2 obtains the barcode information of the motor under test 6 through the RFID module 63 and sends the barcode to the host computer 1. The host computer 1 compares the received barcode information with the previous one and checks whether it belongs to the barcode in the test library at the same time. If not, it reminds through sound and light alarm. If satisfied, it sends the barcode to the PLC cabinet 2. The PLC cabinet 2 compares the barcode sent by the host computer 1 with the barcode sent to the host computer 1. If they are inconsistent, it reminds through sound and light alarm. If they are consistent, it sends a preparation completion command to the host computer 1, indicating that the barcode is correct and the next working condition test can be carried out. By means of barcode feedback, it avoids the problem of disorder in the execution of working conditions caused by barcode problems, and at the same time can effectively save detailed test data and upload test results to the MES system.

[0035] Radio Frequency Identification (RFID) is the abbreviation of Radio Frequency Identification. Its principle is to carry out non-contact data communication between the reader and the tag to achieve the purpose of identification. Wireless radio frequency identification, that is, radio frequency identification technology, is a kind of automatic identification technology. It conducts non-contact two-way data communication through wireless radio frequency, and reads and writes the recording medium (electronic tag or radio frequency card) by wireless radio frequency, so as to achieve the purpose of identification and data exchange.

[0036] In an embodiment of the present invention, it further includes an NVH test computer 7, and the NVH test computer 7 is electrically connected to the host computer 1 and the sound sensor. The sound sensor is used to receive the noise generated by the test motor 61 in real time and transmit the signal to the NVH test computer 7. The NVH test computer 7 is used to collect, record and analyze the changes in vibration and noise during the loading dynamic process, evaluate the quality of the motor assembly, and feedback the signal to the host computer 1 in real time. Among them, NVH is the English abbreviation of Noise, Vibration, and Harshness

[0037] In an embodiment of the present invention, it further includes a monitoring module 8, and the monitoring module 8 is electrically connected to the host computer 1. The monitoring module 8 is set to monitor the motor clamping state in real time. At the same time, the monitoring module 8 records the product operation process for playback and problem reproduction

[0038] In an embodiment of the present invention, it further includes a high-voltage power supply 9, and the high-voltage power supply 9 is electrically connected to the motor controller 62 of the motor under test 6 and the host computer 1. The host computer 1 sends an instruction to the high-voltage power supply 9 to provide a high-voltage current for the motor controller 62, facilitating the motor controller 62 to control the operation of the test motor 61

[0039] In an embodiment of the present invention, it further includes a low-voltage power supply 10, and the low-voltage power supply 10 is electrically connected to the motor controller 62 of the motor under test 6 and the host computer 1. The host computer 1 sends an instruction to the low-voltage power supply 10 to provide a low-voltage current for the motor controller 62, supply power to the MCU low-voltage connector, and facilitate the motor controller 62 to transmit a signal to the host computer 1

[0040] In an embodiment of the present invention, it further includes a chiller 11, and the chiller 11 is electrically connected to the host computer 1. The cooling pipeline of the chiller 11 is communicated with the cooling pipeline of the motor controller 62. The host computer 1 sends an instruction to the chiller 11 to supply cooling water to cool down the motor controller 62

[0041] Test method: After the device is powered on and started, the motor under test 6 is in the test position. The variable frequency drive cabinet 3 controls the first loading motor 4 and the second loading motor 5 to clamp the motor under test 6. After the high-voltage power supply 9, low-voltage power supply 10, and chiller 11 are turned on and ready, the PLC cabinet 2 automatically sends a clamping signal and performs a barcode feedback function according to the motor model of the product. The host computer 1 starts the corresponding test conditions according to the motor model. The NVH test computer 7 monitors the noise change of the motor during operation and feeds back each step and the final result to the host computer 1. After the test is completed, the host computer 1 automatically generates the test process data in the format of a TDMS file, generates a test report in the format of a PDF file, uploads the test results to the MES system, and saves the test results in the format of a CSV file locally. Finally, a test completion instruction is sent, and the first loading motor 4 and the second loading motor 5 unclamp, and the high-voltage power supply 9, low-voltage power supply 10, and chiller 11 are turned off. During this process, the monitoring module 8 records the product operation process for playback and problem reproduction.

[0042] In the description of this specification, the descriptions referring to terms such as "one embodiment", "example", "specific example", etc. mean that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0043] The above shows and describes the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. The above embodiments and the descriptions in the specification only illustrate the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements fall within the scope of the present invention claimed.

Claims

1. A new energy motor test bench system, characterized in that: The system comprises a host computer (1), a PLC cabinet (2), a variable frequency drive cabinet (3), a first loading motor (4), and a second loading motor (5); the host computer (1) is electrically connected to the PLC cabinet (2), the PLC cabinet (2) is electrically connected to the variable frequency drive cabinet (3), the variable frequency drive cabinet (3) is electrically connected to the first loading motor (4) and the second loading motor (5), and the host computer (1) is also electrically connected to a motor to be tested (6); The host computer (1) sends an operation instruction to the PLC cabinet (2), the PLC cabinet (2) sends a clamping signal to the variable frequency drive cabinet (3), the variable frequency drive cabinet (3) controls the first loading motor (4) and the second loading motor (5) to clamp the motor under test (6), and at the same time, the variable frequency drive cabinet (3) controls the first loading motor (4) and the second loading motor (5) to run, and performs a test on the working condition of the motor under test (6). At the same time, the host computer (1) collects working condition data of the motor under test (6).

2. A new energy motor test bench system according to claim 1, characterized in that: The motor under test (6) comprises a test motor (61) and a motor controller (62) mounted on the test motor (61) and electrically connected to the test motor (61).

3. A new energy motor test bench system according to claim 2, characterized in that: The motor under test (6) further comprises an RFID module (63), wherein the RFID module (63) is fixedly mounted on the test motor (61).

4. A new energy motor test bench system according to claim 1, characterized in that: It also includes an NVH test computer (7), and the NVH test computer (7) is electrically connected to the host computer (1) and the sound sensor.

5. A new energy motor test bench system according to claim 1, characterized in that: It also includes a monitoring module (8), and the monitoring module (8) is electrically connected to the host computer (1).

6. A new energy motor test bench system according to claim 2, characterized in that: It also includes a high-voltage power supply (9), which is electrically connected to the motor controller (62) of the motor under test (6) and the host computer (1).

7. A new energy motor test bench system according to claim 2, characterized in that: It also includes a low-voltage power supply (10), and the low-voltage power supply (10) is electrically connected to the motor controller (62) of the motor under test (6) and the host computer (1).

8. A new energy motor test bench system according to claim 2, characterized in that: It also includes a water chiller (11), the water chiller (11) is electrically connected to the host computer (1), and the cooling pipeline of the water chiller (11) is connected to the cooling pipeline of the motor controller (62).

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