A motor controller test circuit

Abstract

The application relates to the technical field of motor controller testing, and particularly discloses a motor controller testing circuit, which comprises a brushless motor controller testing circuit module, a brushed motor controller testing circuit module and an aviation socket module; the brushless motor controller testing circuit module and the brushed motor controller testing circuit module are electrically connected with the aviation socket module; when the motor controller is tested, the tester can flexibly and conveniently insert the brushed motor controller testing circuit module or the brushless motor controller testing circuit module into the shared aviation socket module according to the type of the tested motor controller, so that the tested motor controller can be tested, the test is convenient and fast, the detection efficiency is high, and the generality is good.

Description

Technical Field

[0001] This application relates to the field of motor controller testing technology, specifically to a motor controller testing circuit. Background Technology

[0002] Currently, tools made of brushless or brushed motors are widely used in various aspects of life. Among them, the motor controller is a key component used to control the motor. Functional testing of the motor controller is a crucial production step during its manufacturing process.

[0003] In the relevant existing technologies, there are some detection circuits for testing motor controllers. For example, the patent with authorization announcement number CN218601371U discloses a technical solution that connects a three-phase rectifier between a brushless motor and an electronic load, so that the brushless motor can be tested using an electronic load. However, in the process of testing the motor controller, it is necessary to take into account the testing of motor controllers corresponding to both brushless motors and brushed motors. The testing process requires the use of their respective corresponding testing devices for separate testing, which makes the testing time of the motor controller long, the testing efficiency low and the versatility poor. Utility Model Content

[0004] The purpose of at least one specific embodiment of this utility model is to overcome the defects of the existing technology and provide a motor controller test circuit.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0006] A motor controller test circuit includes a brushless motor controller test circuit module, a brushed motor controller test circuit module, and an aviation connector module. The brushless motor controller test circuit module and the brushed motor controller test circuit module can be electrically connected to the aviation connector module, respectively.

[0007] Furthermore, the aviation connector module includes a battery temperature NTC connector, a power negative connector, a power positive connector, a signal switch connector, an encoder connector, an electronic load connector, and a motor wiring connector.

[0008] Furthermore, the aviation connector module also includes a short-circuit connector, into which a wire is connected to the motor wiring connector to achieve a short-circuit connection with the motor controller under test.

[0009] Furthermore, the brushless motor controller test circuit module includes a simulated battery pack module, a brushless motor controller, a brushless motor, and a rectifier circuit. The simulated battery pack module is connected to the battery temperature NTC socket, communicates with the brushless motor controller, and is connected to the negative power supply socket. The brushless motor controller is electrically connected to one end of the rectifier circuit, and the other end of the rectifier circuit is connected to the electronic load socket and the motor wiring socket, respectively. The brushless motor controller is connected to the brushless motor and the positive power supply socket, and is connected to the signal switch socket through a set signal switch.

[0010] Furthermore, the brushed motor controller test circuit module includes a simulated battery pack module, a brushed motor controller, and a brushed motor. The simulated battery pack module is connected to the battery temperature NTC socket, communicates with the brushed motor controller, and is connected to the negative power supply socket. The brushed motor controller is connected to the brushed motor and the positive power supply socket. The brushed motor controller is connected to the signal switch socket via a pre-configured signal switch.

[0011] Furthermore, the brushless motor is connected to the encoder socket.

[0012] Furthermore, the brushless motor controller is connected to the motor wiring port and short-circuit port via a set relay.

[0013] Furthermore, the brushed motor is connected to the encoder socket.

[0014] Furthermore, the brushed motor controller is connected to the motor wiring port and short-circuit port via a set relay.

[0015] Furthermore, an inductor coil is connected in parallel across the two ends of the electronic load via a three-phase rectifier.

[0016] The advantages of the motor controller testing fixture provided in this application compared to the prior art are as follows: By adopting the above-mentioned motor controller testing circuit, when testing the motor controller, the tester can flexibly and conveniently insert the brushed motor controller testing circuit module or the brushless motor controller testing circuit module into the common aviation connector module according to the type of motor controller being tested, thereby realizing the testing of the motor controller being tested. The testing is convenient and fast, the testing efficiency is high, and the versatility is good. Attached Figure Description

[0017] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the circuit structure of the brushless motor controller test circuit module and the aviation connector module in a certain embodiment of the present application.

[0019] Figure 2 This is a schematic diagram of the circuit structure of the brushed motor controller test circuit module and the aviation connector module in a certain embodiment of the present application. Detailed Implementation

[0020] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0021] Reference Figure 1 and Figure 2 A motor controller test circuit includes a brushless motor controller test circuit module, a brushed motor controller test circuit module, and an aviation connector module. The brushless motor controller test circuit module and the brushed motor controller test circuit module can be communicated and connected to the aviation connector module respectively. That is, the brushless motor controller test circuit module and the brushed motor controller test circuit module share the aviation connector module, and the aviation connector module is connected to an industrial control computer.

[0022] During testing, depending on the model of the motor controller under test (brushed or brushless), either the brushed motor controller test circuit module or the brushless motor controller test circuit module is inserted into the aviation connector module. The industrial control computer, based on pre-stored test commands, controls the brushed or brushless motor controller test circuit modules via the aviation connector module to perform the corresponding tests. It is understood that the brushed and brushless motor controller test circuit modules are integrated on separate circuit boards, each with corresponding connectors for the aviation connector modules. It should be noted that the integration of the test circuit modules onto the circuit board and the placement of the connectors on the circuit board can be achieved using existing circuit board manufacturing techniques.

[0023] By using the above-mentioned motor controller test circuit, when testing the motor controller, the tester can flexibly and conveniently insert the brushed motor controller test circuit module or the brushless motor controller test circuit module into the common aviation interface module according to the type of motor controller being tested. This allows for the testing of the motor controller, which is convenient, fast, efficient, and versatile.

[0024] See attached document Figure 1 and Figure 2 Specifically, the aviation connector module includes a battery temperature NTC connector 8, a power negative connector 9, a power positive connector 10, a signal switch connector 11, an encoder connector 12, an electronic load connector 13, a motor wiring connector 14, and a short-circuit connector.

[0025] Reference Figure 1 The brushless motor controller test circuit module includes a simulated battery pack module 1, a brushless motor controller 2, a brushless motor 3, and a rectifier circuit 5. The simulated battery pack module 1 is connected to the battery temperature NTC connector 8, communicates with the brushless motor controller 2, and is connected to the negative power connector 9. The brushless motor controller 2 is electrically connected to one end of the rectifier circuit 5, and the other end of the rectifier circuit 5 is connected to the electronic load connector 13 and the motor wiring connector 14. The brushless motor controller 2 is connected to the brushless motor 3 and to the positive power connector 10. The brushless motor controller 2 is connected to the signal switch connector 11 via a signal switch 7. In this embodiment, the simulated battery pack module 1 is equipped with an NTC detection module to simulate the temperature changes of the battery pack and perform high and low temperature protection tests on the controller under test. Additionally, the simulated battery pack module 1 mainly serves a communication function and does not supply power to the controller under test. The brushless motor 3 is connected to the encoder connector 12 to provide information acquired by the encoder, including the motor's speed and direction.

[0026] The brushless motor controller 2 is connected to the motor wiring port 14 and the short-circuit port via a relay 6.

[0027] In this embodiment, the brushless motor controller test circuit module is equipped with a three-phase rectifier, which is connected to the brushless motor 3 to rectify the three-phase lines of the brushless motor 3 into two-phase lines (converting the AC power output by the three-phase brushless motor into DC power). The rectified phase lines (DC+ / - terminals) are connected to the electronic load to achieve accurate loading of the electronic load.

[0028] An inductor is connected in parallel across the electronic load via a three-phase rectifier. A resistor R and an inductor L are connected in parallel, with a total impedance Z = (R + jωL) / (R·jωL). Overall, the load exhibits inductive behavior. The original motor coil is used as the inductor.

[0029] When the brushless motor 3 is tested under no-load conditions, the three-phase rectifier and the controller under test are disconnected through the relay 6; under load conditions, the three-phase rectifier and the controller under test are connected to simulate the state under load.

[0030] Reference Figure 2 The brushed motor controller test circuit module includes a simulated battery pack module 1, a brushed motor controller 15, and a brushed motor 16. The simulated battery pack module 1 is connected to the battery temperature NTC connector 8, communicates with the brushed motor controller 15, and is connected to the negative power connector 9. The brushed motor controller 15 is connected to the brushed motor 16 and the positive power connector 10. The brushed motor controller 15 is connected to the signal switch connector 11 via a signal switch 7. Similarly, the brushed motor 16 is connected to the encoder connector 12 to provide information from the encoder 4, including the motor's speed and direction. The brushed motor controller 15 is connected to the motor wiring connector 14 and the short-circuit connector via a relay 6.

[0031] The brushed motor controller 15 is connected to the motor wiring port 14 and the short-circuit port via a relay 6.

[0032] When the brushed motor 16 is subjected to no-load functional testing, the industrial control computer directly shuts down the electronic load, disconnecting the electronic load from the controller under test. This avoids the electronic load affecting the no-load functional test and thus the accuracy of the no-load functional test results.

[0033] When under load, the electronic load is connected to the controller under test, and the controller under test is disconnected from the motor using relay 6. At this time, the electronic load can be used to directly simulate the state of the motor under load.

[0034] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A test circuit for a motor controller, characterized in that, It includes a brushless motor controller test circuit module, a brushed motor controller test circuit module, and an aviation connector module. The brushless motor controller test circuit module and the brushed motor controller test circuit module can be electrically connected to the aviation connector module, respectively.

2. The motor controller test circuit according to claim 1, characterized in that, The aviation connector module includes a battery temperature NTC connector, a power negative connector, a power positive connector, a signal switch connector, an encoder connector, an electronic load connector, and a motor wiring connector.

3. The motor controller test circuit according to claim 2, characterized in that, The aviation connector module also includes a short-circuit connector, which is connected to the motor wiring connector to establish a short-circuit connection with the motor controller under test.

4. The motor controller test circuit according to claim 2, characterized in that, The brushless motor controller test circuit module includes a simulated battery pack module, a brushless motor controller, a brushless motor, and a rectifier circuit. The simulated battery pack module is connected to the battery temperature NTC socket, and is communicatively connected to the brushless motor controller. The simulated battery pack module is also connected to the negative power supply socket. The brushless motor controller is electrically connected to one end of the rectifier circuit, and the other end of the rectifier circuit is connected to both the electronic load socket and the motor wiring socket. The brushless motor controller is connected to the brushless motor and the positive power supply socket, and is connected to the signal switch socket via a provided signal switch.

5. A motor controller test circuit according to claim 2, characterized in that, The brushed motor controller test circuit module includes a simulated battery pack module, a brushed motor controller, and a brushed motor. The simulated battery pack module is connected to the battery temperature NTC socket, the simulated battery pack module is communicatively connected to the brushed motor controller, the simulated battery pack module is connected to the negative power supply socket, the brushed motor controller is connected to the brushed motor, the brushed motor controller is connected to the positive power supply socket, and the brushed motor controller is connected to the signal switch socket via a provided signal switch.

6. A motor controller test circuit according to claim 4, characterized in that, The brushless motor is connected to the encoder socket.

7. A motor controller test circuit according to claim 4, characterized in that, The brushless motor controller is connected to the motor wiring port and short-circuit port via a relay.

8. A motor controller test circuit according to claim 5, characterized in that, The brushed motor is connected to the encoder socket.

9. A motor controller test circuit according to claim 5, characterized in that, The brushed motor controller is connected to the motor wiring port and short-circuit port via a set relay.

10. A motor controller test circuit according to claim 4, characterized in that, An inductor coil is connected in parallel across the electronic load via a three-phase rectifier.

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