Motor controller reliability testing device and system

Abstract

The embodiment of the invention provides a motor controller reliability test device and system. The device comprises a motor controller; the motor controller is arranged in the environment bin; and the environment control module is used for controlling the test environment in the environment bin. In the embodiment of the invention, the test environment of the motor controller is maintained through the environment bin, and the test environment in the environment bin is controlled through the environment control module, so that the test environment of the motor controller is controllable to meet different test environment requirements.

Description

Technical Field

[0001] The present application relates to the field of electronic technology, and in particular to a motor controller reliability testing device and system. Background Art

[0002] The motor controller is an integrated circuit that actively controls the motor to work in a set direction, speed, angle, and response time. In new energy vehicles, the motor controller can convert the electric energy stored in the power battery into the electric energy required to drive the motor according to the gear position, throttle, brake and other instructions, and then control the new energy vehicle's starting operation, forward and backward speed, climbing strength and other driving conditions.

[0003] In order to improve the reliability of the motor controller, it is usually necessary to perform a reliability test on the motor controller. In the prior art, the motor controller is usually tested in a stable test environment (eg, room temperature).

[0004] However, in actual applications, due to the different application scenarios of new energy vehicles, the working environment of the motor controller is diverse (the working environment of new energy vehicles may be affected by many factors, such as different regions of use or seasonal changes, etc.), which leads to the existing testing methods being unable to meet the needs of the diverse working environment of the motor controller.

[0005] It should be pointed out that the information disclosed in the background technology section of this application is only intended to deepen the understanding of the general background technology of this application, and should not be regarded as an admission or suggestion in any form that the information constitutes prior art already known to those skilled in the art. Summary of the invention

[0006] In view of this, the present application provides a motor controller reliability testing device and system to help solve the problem in the prior art that reliability testing of the motor controller in a stable testing environment cannot meet the requirements of the diverse working environment of the motor controller.

[0007] In a first aspect, an embodiment of the present application provides a motor controller reliability testing device, comprising: a motor controller; an environmental chamber, wherein the motor controller is arranged in the environmental chamber; and an environmental control module for controlling a test environment in the environmental chamber.

[0008] In a possible implementation, a temperature sensor and / or a humidity sensor is provided in the environmental chamber, and the temperature sensor and / or the humidity sensor are used to collect temperature information and / or humidity information and send the temperature information and / or the humidity information to a host computer.

[0009] In a possible implementation, the environment control module is a water cooler, and the water cooler is used to control the temperature and / or humidity in the environment chamber.

[0010] In a possible implementation, the water chiller is used to receive a test environment control instruction sent by a host computer, and control the test environment in the environmental chamber according to the test environment control instruction.

[0011] In a possible implementation, it also includes a first power supply and a second power supply, the first power supply is electrically connected to the motor controller, and the first power supply is used to provide a first voltage to the motor controller; the second power supply is electrically connected to the motor controller, and the second power supply is used to provide a second voltage to the motor controller; wherein the second voltage is greater than the first voltage.

[0012] In a possible implementation, the second power supply is used to receive a voltage adjustment instruction sent by a host computer, and adjust the second voltage to a high voltage state or a low voltage state according to the voltage adjustment instruction.

[0013] In a possible implementation, it also includes: a contactor and a relay, the first power supply is electrically connected to the motor controller through the contactor, and the contactor is used to control the on-off between the first power supply and the motor controller; the second power supply is electrically connected to the motor controller through the relay, and the relay is used to control the on-off between the second power supply and the motor controller.

[0014] In a possible implementation, it also includes a PLC, which is electrically connected to the contactor and the relay respectively; the PLC is used to send a contactor control instruction to the contactor, and the contactor is used to control the on-off between the first power supply and the motor controller according to the contactor control instruction; the PLC is used to send a relay control instruction to the relay, and the relay is used to control the on-off between the second power supply and the motor controller according to the relay control instruction.

[0015] In a possible implementation, the motor controller includes a switching power device, and the motor controller is used to receive a switching power device control instruction sent by a host computer, and perform a switching operation according to the switching power device control instruction.

[0016] In a second aspect, an embodiment of the present application provides a motor controller reliability testing system, comprising a host computer and the motor controller reliability testing device, wherein the host computer is communicatively connected with the motor controller reliability testing device.

[0017] In a possible implementation, when the motor controller reliability testing device includes a PLC and a second power supply, the host computer communicates with the motor controller, the environmental chamber, the environmental control module, the PLC and the second power supply using at least two different communication protocols.

[0018] In an embodiment of the present application, the test environment of the motor controller is maintained by an environmental chamber, and the test environment in the environmental chamber is controlled by an environmental control module, so that the test environment of the motor controller is controllable to adapt to different test environment requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0020] Figure 1 A schematic diagram of the structure of a motor controller reliability testing device provided in an embodiment of the present application.

[0021] Figure 2 A schematic structural diagram of another motor controller reliability testing device provided in an embodiment of the present application.

[0022] Figure 3 A schematic structural diagram of another motor controller reliability testing device provided in an embodiment of the present application.

[0023] Figure 4 A schematic structural diagram of another motor controller reliability testing device provided in an embodiment of the present application.

[0024] Figure 5 A schematic diagram of the structure of a motor controller reliability testing system provided in an embodiment of the present application. DETAILED DESCRIPTION

[0025] In order to better understand the technical solution of the present application, the embodiments of the present application are described in detail below with reference to the accompanying drawings.

[0026] It should be clear that the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present application.

[0027] The terms used in the embodiments of the present application are only for the purpose of describing specific embodiments, and are not intended to limit the present application. The singular forms "a", "said" and "the" used in the embodiments of the present application and the appended claims are also intended to include plural forms, unless the context clearly indicates other meanings.

[0028] It should be understood that the term "and / or" used in this article is only a description of the association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0029] See also Figure 1 , is a schematic diagram of the structure of a motor controller reliability test device provided in an embodiment of the present application. Figure 1 As shown, the motor controller reliability test device includes a motor controller, an environmental chamber and an environmental control module. A closed space is provided in the environmental chamber, and the motor controller and the environmental control module are arranged in the closed space of the environmental chamber, and the test environment of the motor controller is maintained by the environmental chamber. The environmental control module is used to control the test environment in the environmental chamber, for example, to adaptively adjust the test environment in the environmental chamber according to the test requirements.

[0030] In an embodiment of the present application, the test environment of the motor controller is maintained by an environmental chamber, and the test environment in the environmental chamber is controlled by an environmental control module, so that the test environment of the motor controller is controllable to adapt to different test environment requirements.

[0031] See also Figure 2 , is a schematic diagram of the structure of another motor controller reliability testing device provided in an embodiment of the present application. Figure 2 As shown in the figure, the motor controller reliability test device is Figure 1 The motor controller reliability test device shown in the figure further includes a temperature sensor and / or a humidity sensor, wherein the temperature sensor and / or the humidity sensor are arranged in the environmental chamber to collect temperature information and / or humidity information in the environmental chamber.

[0032] In addition, in practical applications, the motor controller reliability test device is usually connected to the host computer for communication, receiving control instructions sent by the host computer and sending relevant information to the host computer. Specifically, after the temperature sensor and / or humidity sensor collects the temperature information and / or humidity information in the environmental chamber, the temperature information and / or humidity information is sent to the host computer, so that the host computer controls the environmental control module to perform corresponding operations according to the temperature information and / or humidity information, thereby controlling the test environment in the environmental chamber.

[0033] In a possible implementation, the environmental control module is a water cooler, and the temperature and / or humidity in the environmental chamber are controlled by the water cooler. Specifically, the water cooler can receive the test environment control instruction sent by the host computer, and control the test environment in the environmental chamber according to the test environment control instruction. It can be understood that when the environmental control module is a water cooler, the temperature and / or humidity in the environmental chamber are mainly controlled. Of course, those skilled in the art can set the environmental control module to other functional units according to actual needs, so as to control other types of environmental conditions in the environmental chamber, and the embodiments of the present application do not specifically limit this.

[0034] See also Figure 3 , is a schematic diagram of the structure of another motor controller reliability testing device provided in an embodiment of the present application. Figure 3 As shown in the figure, the motor controller reliability test device is Figure 2 The motor controller reliability test device shown in the figure also includes a first power supply, a second power supply, a contactor and a relay. The first power supply is electrically connected to the motor controller through the contactor, the first power supply is used to provide a first voltage to the motor controller, and the contactor is used to control the on-off between the first power supply and the motor controller; the second power supply is electrically connected to the motor controller through the relay, the second power supply is used to provide a second voltage to the motor controller, and the relay is used to control the on-off between the second power supply and the motor controller.

[0035] Specifically, the first power supply is used to power the control circuit of the motor controller, wherein the control circuit includes but is not limited to the embedded control system circuit on the motor controller for information exchange with the host computer, etc.; the second power supply is used to power the drive circuit of the motor controller, mainly used to drive the motor controller to start the motor. It is understandable that, usually, the second voltage provided by the second power supply is higher than the first voltage provided by the first power supply.

[0036] In a possible implementation, the host computer is in communication connection with the second power supply for information exchange. Specifically, the host computer can send a voltage adjustment instruction to the second power supply, and the second power supply adjusts the second voltage sent to the motor controller to a high voltage state or a low voltage state according to the received voltage adjustment instruction, so as to perform low voltage test and high voltage test on the motor controller respectively.

[0037] See also Figure 4 , is a schematic diagram of the structure of another motor controller reliability testing device provided in an embodiment of the present application. Figure 4 As shown in the figure, the motor controller reliability test device is Figure 3 The motor controller reliability test device shown in the figure also includes a PLC. Figure 4It can be seen that the PLC is electrically connected to the contactor and relay mentioned above respectively. The PLC is used to send a contactor control instruction to the contactor, and the contactor controls whether the first power supply and the motor controller are disconnected or connected according to the received contactor control instruction; the PLC is also used to send a relay control instruction to the relay, and the relay controls the connection and disconnection between the second power supply and the motor controller according to the received relay control instruction.

[0038] In a possible implementation, the motor controller also includes a switching power device. The host computer can send a switching power device control instruction to the switching power device, and the switching power device performs a switching operation according to the received switching power device control instruction, so as to test the switching power device.

[0039] In a possible implementation, the PLC has a wireless communication module, and the host computer is connected to the PLC by wireless communication.

[0040] See also Figure 5 , is a schematic diagram of the structure of a motor controller reliability test system provided in an embodiment of the present application. Figure 5 As shown, the motor controller reliability test system includes a host computer and a motor controller reliability test device, wherein the host computer is in communication connection with the motor controller reliability test device.

[0041] In a possible implementation, the host computer is connected to the motor controller, the environmental chamber, the environmental control module, the PLC, and the second power supply using at least two different communication protocols. Specifically, two communication protocols can be used, such as the MODBUS communication protocol and the CAN communication protocol. Three communication protocols can also be used, such as the MODBUS communication protocol, the CAN communication protocol, and the Ether-CAT communication protocol. Of course, those skilled in the art can replace or add or delete the communication protocol between the host computer and the motor controller, the environmental chamber, the environmental control module, the PLC, and the second power supply according to actual needs, and the embodiments of the present application do not specifically limit this.

[0042] The host computer communicates with the motor controller, environmental chamber, environmental control module, PLC and the second power supply using at least two different communication protocols, which facilitates direct communication connection between existing technical products and facilitates construction by technical support personnel.

[0043] In a possible implementation, the host computer and the environmental chamber are connected via a serial port, and the host computer and the environmental chamber use the MODBUS communication protocol. The host computer and the water chiller are connected via a serial port, and the host computer and the water chiller use the MODBUS communication protocol. The host computer and the PLC communicate via Ethernet, and the host computer and the PLC use the Ether-CAT communication protocol. The host computer and the motor controller communicate via the CAN communication protocol.

[0044] In order to facilitate the understanding of the embodiments of the present application, the working process thereof will be generally introduced below.

[0045] The temperature and / or humidity information collected by the temperature sensor and / or humidity sensor in the environmental chamber is transmitted to the host computer through serial communication. The host computer sends a test environment control instruction to the water chiller through serial communication. The water chiller controls the test environment in the environmental chamber according to the test environment control instruction.

[0046] Specifically, the host computer processes the temperature and / or humidity information obtained from the environmental chamber. If the processed result is consistent with the detection environment conditions set by the host computer, the host computer sends an environmental control stop command to the water cooler. If the processed result is inconsistent with the detection environment conditions set by the host computer, the host computer sends an environmental control start command to the water cooler, and the water cooler cools and / or humidifies the temperature and / or humidity in the environmental chamber. After that, the environmental chamber transmits the temperature and / or humidity information collected by the temperature sensor and / or humidity sensor to the host computer through serial communication. The host computer continues to compare the processed information with the detection environment set by the host computer, and then the steps are repeated as above. Finally, the specific function of this module is that after the host computer sets the environmental conditions for the motor controller detection, the system can maintain the motor controller test environment set by the host computer to avoid the influence of other factors on the motor controller test environment. Among them, the factors that affect the motor controller test environment can be: the external natural environment, the heat dissipation of various instruments in the environmental chamber, the insulation effect of the environmental chamber, etc.

[0047] The host computer sends PLC control instructions to the PLC via Ethernet. The PLC will control the relay and / or contactor according to the PLC control instructions sent by the host computer, with the purpose of indirectly controlling the on and off of the first power supply and the motor controller and / or the on and off of the second power supply and the motor controller. The host computer will send a voltage adjustment instruction to the second power supply, and the second power supply will adjust the output voltage to a high voltage state or a low voltage state according to the voltage adjustment instruction. Combining the power switch control module controlled by the PLC and the simulated environment control module, the continuous power on and off durability test of the motor controller under different simulated environmental conditions is realized.

[0048] The host computer transmits the test results of the motor controller under different simulated environmental conditions to the human-computer interaction interface of the host computer through communication with the motor controller, so that the detection personnel can make statistical observations on the test results under different environmental conditions. It should be pointed out that the host computer involved in the embodiment of the present application can be a tablet computer, a personal computer (PC), a personal digital assistant (PDA), a smart watch, a netbook, a wearable electronic device, an augmented reality (AR) device, a virtual reality (VR) device, etc., and the embodiment of the present application does not make specific restrictions on this.

[0049] Corresponding to the above-mentioned embodiment, the embodiment of the present application further provides a computer program product, which includes executable instructions. When the executable instructions are executed on a computer, the computer executes some or all of the steps in the above-mentioned method embodiment.

[0050] In the embodiments of the present application, "at least one" refers to one or more, and "plurality" refers to two or more. "And / or" describes the association relationship of associated objects, indicating that three relationships may exist. For example, A and / or B can represent the existence of A alone, the existence of A and B at the same time, and the existence of B alone. Among them, A and B can be singular or plural. The character " / " generally indicates that the previous and subsequent associated objects are in an "or" relationship. "At least one of the following" and similar expressions refer to any combination of these items, including any combination of single or plural items. For example, at least one of a, b and c can be represented by: a, b, c, ab, ac, bc, or abc, where a, b, c can be single or multiple.

[0051] Those of ordinary skill in the art will appreciate that the various units and algorithm steps described in the embodiments disclosed herein can be implemented in a combination of electronic hardware, computer software, and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered to be beyond the scope of this application.

[0052] Those skilled in the art can clearly understand that, for the convenience and brevity of description, the specific working processes of the systems, devices and units described above can refer to the corresponding processes in the aforementioned method embodiments and will not be repeated here.

[0053] In several embodiments provided in the present application, if any function is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application can be essentially or partly embodied in the form of a software product that contributes to the prior art, and the computer software product is stored in a storage medium, including several instructions for a computer device (which can be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the methods of each embodiment of the present application. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (ROM), random access memory (RAM), disk or optical disk, etc., and other media that can store program codes.

[0054] The above are only specific implementations of the present application. Any person skilled in the art can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. The protection scope of the present application should be based on the protection scope of the claims.

Claims

1. A motor controller reliability test device, characterized in that: include: Motor controller; An environmental chamber, wherein the motor controller is arranged in the environmental chamber; The environment control module is used to control the test environment in the environment chamber.

2. The motor controller reliability testing device according to claim 1, characterized in that: A temperature sensor and / or a humidity sensor is provided in the environmental chamber, and the temperature sensor and / or the humidity sensor are used to collect temperature information and / or humidity information, and send the temperature information and / or the humidity information to a host computer.

3. The motor controller reliability testing device according to claim 1, characterized in that: The environmental control module is a water cooler, and the water cooler is used to control the temperature and / or humidity in the environmental chamber.

4. The motor controller reliability testing device according to claim 1, characterized in that: The water chiller is used to receive the test environment control instruction sent by the host computer, and control the test environment in the environmental chamber according to the test environment control instruction.

5. The motor controller reliability testing device according to claim 1, characterized in that: Also includes: A first power supply, the first power supply is electrically connected to the motor controller, and the first power supply is used to provide a first voltage for the motor controller; A second power supply, the second power supply is electrically connected to the motor controller, and the second power supply is used to provide a second voltage for the motor controller; Wherein, the second voltage is greater than the first voltage.

6. The motor controller reliability testing device according to claim 5, characterized in that: The second power supply is used to receive a voltage adjustment instruction sent by a host computer, and adjust the second voltage to a high voltage state or a low voltage state according to the voltage adjustment instruction.

7. The motor controller reliability testing device according to claim 5 or 6, characterized in that: Also includes: A contactor, through which the first power supply is electrically connected to the motor controller, and the contactor is used to control the on-off between the first power supply and the motor controller; Relay, the second power supply is electrically connected to the motor controller through the relay, and the relay is used to control the on and off between the second power supply and the motor controller.

8. The motor controller reliability testing device according to claim 7, characterized in that: Also includes: A PLC, the PLC is electrically connected to the contactor and the relay respectively; The PLC is used to send a contactor control instruction to the contactor, and the contactor is used to control the on-off between the first power supply and the motor controller according to the contactor control instruction; The PLC is used to send a relay control instruction to the relay, and the relay is used to control the on-off between the second power supply and the motor controller according to the relay control instruction.

9. The motor controller reliability testing device according to claim 8, characterized in that: The PLC is used to receive a PLC control instruction sent by a host computer, and send a contactor control instruction to the contactor and / or send a relay control instruction to the relay according to the PLC control instruction.

10. The motor controller reliability testing device according to claim 1, characterized in that: The motor controller includes a switching power device, and is used to receive a switching power device control instruction sent by a host computer, and perform a switching operation according to the switching power device control instruction.

11. A motor controller reliability testing system, characterized in that: include: Host computer; The motor controller reliability testing device according to any one of claims 1 to 10; Wherein, the host computer is communicatively connected with the motor controller reliability testing device.

12. The motor controller reliability testing system according to claim 11, characterized in that: When the motor controller reliability testing device includes a PLC and a second power supply, the host computer is communicatively connected with the motor controller, the environmental chamber, the environmental control module, the PLC and the second power supply using at least two different communication protocols.

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