Method for verifying the endurance of an electric machine and related apparatus

Abstract

The application discloses a kind of verification motor endurance test method and related equipment, it is related to vehicle motor test field, mainly to solve the lack of a more simple and real verification motor endurance method problem.The method comprises: based on the kind of target electric drive determines the high-low temperature drive endurance test parameter of target electric drive;Based on the high-low temperature drive endurance test parameter of the target electric drive determines the self-heating endurance test parameter in the self-heating process of target motor, wherein the self-heating process is the process that target motor is battery self-heating;In the process of carrying out high-low temperature drive endurance test to the target electric drive by the high-low temperature drive endurance test parameter, based on the self-heating endurance test parameter simultaneously carries out self-heating endurance test to the target motor.The application is used for verifying the test process of motor endurance.

Description

Technical Field

[0001] This invention relates to the field of vehicle motor testing, and more particularly to a testing method and related equipment for verifying motor durability. Background Technology

[0002] Low temperatures can affect the performance of battery packs in new energy vehicles. Currently, most battery self-heating technologies used in the industry employ pulsed current heating. This involves applying an alternating voltage Ud at a specific frequency to the motor controller, controlling the switching on and off of the IGBTs to generate an alternating pulsed current on the bus. This pulsed current acts on the internal resistance of the battery cells, generating heat and thus achieving self-heating. The desired heating effect is achieved by controlling the amplitude and frequency of the phase voltage Ud output by the motor driver. During pulsed battery self-heating, the high temperature generated by the pulsed current acting on the motor coils (the motor is in a stall-like condition) and vibration place additional loads on the motor and controller. The main impact of self-heating on the electric drive system is the potential for rotor demagnetization due to alternating high and low temperatures.

[0003] However, current high and low temperature durability tests for electric drive systems only verify the life cycle of electric drive systems under normal load driving conditions. They do not take into account the additional load brought by pulse battery self-heating to the electric drive system. There is currently no standard durability verification scheme in the industry. There is no effective verification for electric drive systems equipped with pulse battery self-heating, and the potential risks brought by pulse self-heating cannot be effectively identified and avoided in advance. Summary of the Invention

[0004] In view of the above problems, the present invention provides a test method and related equipment for verifying the durability of an electric motor, the main purpose of which is to solve the problem of lacking a simpler and more realistic method for verifying the durability of an electric motor.

[0005] To address at least one of the aforementioned technical problems, in a first aspect, the present invention provides a test method for verifying the durability of an electric motor, the method comprising:

[0006] Determine the high and low temperature drive durability test parameters of the target electric drive based on the type of target electric drive;

[0007] The self-heating durability test parameters of the target motor during the self-heating process are determined based on the high and low temperature drive durability test parameters of the target electric drive, wherein the self-heating process is the process by which the target motor self-heats the battery.

[0008] During the high and low temperature drive durability test of the target electric drive using the high and low temperature drive durability test parameters, the self-heating durability test of the target motor is also performed simultaneously based on the self-heating durability test parameters.

[0009] Optionally, the high and low temperature drive durability test parameters include single cycle duration, number of cycles, alternating temperature amplitude of the environmental chamber, and total test duration;

[0010] The determination of high and low temperature drive durability test parameters for the target electric drive based on the type of target electric drive includes:

[0011] The single cycle duration, number of cycles, and alternating temperature amplitude of the environmental chamber are determined based on the type of the target electric drive.

[0012] The total test duration is determined based on the duration of a single loop and the number of loops.

[0013] Optionally, the self-heating durability test parameters include the duration of a single self-heating cycle and the self-heating trigger temperature;

[0014] The determination of self-heating durability test parameters of the target motor during the self-heating process based on the high and low temperature drive durability test parameters of the target electric drive includes:

[0015] The total self-heating test duration is determined based on the type of target motor.

[0016] The duration of a single self-heating cycle is determined based on the total self-heating test duration and the number of cycles.

[0017] Optionally, when performing a high-low temperature drive durability test on the target electric drive based on the high-low temperature drive durability test parameters, performing a self-heating durability test on the target motor based on the self-heating durability test parameters includes:

[0018] When the ambient temperature chamber of the target electric drive is cooled down to the self-heating trigger temperature, a self-heating durability test is performed on the target motor based on the single self-heating duration.

[0019] Optionally, the step of simultaneously performing a self-heating durability test on the target motor based on the self-heating durability test parameters includes:

[0020] The self-heating durability test of the target motor is performed based on the single self-heating duration by transmitting voltage signals between the test bench and the controller.

[0021] Optionally, the self-heating durability test of the target motor based on the single self-heating duration via voltage signal transmission between the test bench and the controller includes:

[0022] The control unit sends a low-level signal to the controller.

[0023] When the ambient temperature of the target electric drive chamber drops to the self-heating trigger temperature, the test bench is controlled to send a high-level signal to the controller.

[0024] When the controller receives the high-level signal, a self-heating durability test is performed on the target motor based on the single self-heating duration.

[0025] Optionally, the above methods also include:

[0026] When performing high and low temperature drive durability tests on the target electric drive based on the high and low temperature drive durability test parameters and self-heating durability tests on the target motor based on the self-heating durability test parameters, the high and low temperature drive durability acceptance parameters and self-heating durability acceptance parameters are obtained simultaneously.

[0027] Secondly, embodiments of the present invention also provide a testing device for verifying the durability of a motor, comprising:

[0028] The first determining unit is used to determine the high and low temperature drive durability test parameters of the target electric drive based on the type of the target electric drive.

[0029] The second determining unit is used to determine the self-heating durability test parameters of the target motor during the self-heating process based on the high and low temperature drive durability test parameters of the target electric drive, wherein the self-heating process is the process of the target motor self-heating the battery.

[0030] The testing unit is used to simultaneously perform a self-heating durability test on the target motor based on the self-heating durability test parameters during the high and low temperature drive durability test of the target electric drive using the high and low temperature drive durability test parameters.

[0031] To achieve the above objectives, according to a third aspect of the present invention, a computer-readable storage medium is provided, the computer-readable storage medium comprising a stored program, wherein, when the program is executed by a processor, the steps of the above-described test method for verifying motor durability are implemented.

[0032] To achieve the above objectives, according to a fourth aspect of the present invention, an electronic device is provided, comprising at least one processor and at least one memory connected to the processor; wherein the processor is configured to invoke program instructions in the memory to execute the steps of the above-described test method for verifying motor durability.

[0033] By employing the above technical solution, the present invention provides a test method and related equipment for verifying motor durability. Addressing the lack of a simpler and more realistic method for verifying motor durability, the present invention determines high and low temperature drive durability test parameters for the target electric drive based on its type; it then determines self-heating durability test parameters for the target motor during its self-heating process based on these parameters, wherein the self-heating process refers to the battery-driven self-heating process of the target motor; and simultaneously performs a self-heating durability test on the target electric drive based on the high and low temperature drive durability test parameters, and on the target motor itself based on the self-heating durability test parameters. In the above scheme, for electric drive systems with pulsed battery self-heating function, the high and low temperature drive durability verification scheme of electric drive system has been optimized and supplemented. In the high and low temperature durability test, the battery self-heating condition is added. The battery self-heating is carried out during the high and low temperature durability test. The drive durability of electric drive system and battery self-heating durability verification can be carried out at the same time. This can effectively improve the reliability verification time of electric drive system and provide relevant evaluation criteria for electric drive system equipped with pulsed battery self-heating.

[0034] Correspondingly, the testing device, equipment, and computer-readable storage medium for verifying motor durability provided in the embodiments of the present invention also have the above-mentioned technical effects.

[0035] The above description is merely an overview of the technical solution of the present invention. In order to better understand the technical means of the present invention and to implement it in accordance with the contents of the specification, and in order to make the above and other objects, features and advantages of the present invention more apparent and understandable, specific embodiments of the present invention are described below. Attached Figure Description

[0036] Various other advantages and benefits will become apparent to those skilled in the art upon reading the following detailed description of preferred embodiments. The accompanying drawings are for illustrative purposes only and are not intended to limit the invention. Furthermore, the same reference numerals denote the same parts throughout the drawings. In the drawings:

[0037] Figure 1 A flowchart illustrating a test method for verifying motor durability provided by an embodiment of the present invention is shown.

[0038] Figure 2 A schematic block diagram of a testing device for verifying the durability of a motor, provided by an embodiment of the present invention, is shown.

[0039] Figure 3 This diagram illustrates the composition of a test electronic device for verifying the durability of a motor, as provided in an embodiment of the present invention. Detailed Implementation

[0040] Exemplary embodiments of the invention will now be described in more detail with reference to the accompanying drawings. While exemplary embodiments of the invention are shown in the drawings, it should be understood that the invention can be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided to enable a more thorough understanding of the invention and to fully convey the scope of the invention to those skilled in the art.

[0041] To address the lack of a simpler and more reliable method for verifying motor durability, this invention provides a testing method for verifying motor durability, such as... Figure 1 As shown, the method includes:

[0042] S101. Determine the high and low temperature drive durability test parameters of the target electric drive based on the type of the target electric drive;

[0043] For example, the first step is to confirm the high and low temperature drive durability scheme based on the drive design requirements of different electric drive systems and the durability test acceleration model, that is, to determine the high and low temperature drive durability test parameters of the target electric drive, so that subsequent experiments can be carried out based on these parameters.

[0044] S102. Determine the self-heating durability test parameters of the target motor during the self-heating process based on the high and low temperature drive durability test parameters of the target electric drive, wherein the self-heating process is the process of the target motor self-heating the battery.

[0045] For example, based on the pulsed battery self-heating design requirements of the electric drive system and the high and low temperature durability test acceleration model, combined with the confirmed environmental chamber alternating temperature, the self-heating durability test parameters required for the self-heating function are determined.

[0046] S103. During the high and low temperature drive durability test of the target electric drive using the high and low temperature drive durability test parameters, the self-heating durability test of the target motor is performed simultaneously based on the self-heating durability test parameters.

[0047] For example, after determining the test parameters for both, battery self-heating was added under high and low temperature durability conditions, which can simultaneously verify the drive durability of the electric drive system and the battery self-heating durability. This can effectively improve the reliability verification time of the electric drive system and provide relevant evaluation criteria for electric drive systems equipped with pulse-type battery self-heating.

[0048] By employing the above technical solution, the present invention provides a test method for verifying motor durability. Addressing the lack of a simpler and more realistic method for verifying motor durability, the present invention determines high and low temperature drive durability test parameters for the target electric drive based on its type; it then determines self-heating durability test parameters for the target motor during its self-heating process based on these parameters, where the self-heating process refers to the target motor's battery self-heating process. During the high and low temperature drive durability test of the target electric drive using the aforementioned high and low temperature drive durability test parameters, the self-heating durability test of the target motor is simultaneously performed based on the aforementioned self-heating durability test parameters. In this solution, for electric drive systems with pulsed battery self-heating functionality, the high and low temperature drive durability verification scheme for the electric drive system is optimized and supplemented. A battery self-heating condition is added to the high and low temperature durability test conditions, utilizing the time allotted for the high and low temperature durability test for battery self-heating. This allows for simultaneous verification of the electric drive system's drive durability and battery self-heating durability, effectively improving the reliability verification time of the electric drive system and providing relevant evaluation criteria for electric drive systems equipped with pulsed battery self-heating.

[0049] In one embodiment, the high and low temperature drive durability test parameters include single cycle duration, number of cycles, alternating temperature amplitude of the environmental chamber, and total test duration;

[0050] The determination of high and low temperature drive durability test parameters for the target electric drive based on the type of target electric drive includes:

[0051] The single cycle duration, number of cycles, and alternating temperature amplitude of the environmental chamber are determined based on the type of the target electric drive.

[0052] The total test duration is determined based on the duration of a single loop and the number of loops.

[0053] For example, firstly, based on the drive design requirements of different electric drive systems and the durability test acceleration model, the high and low temperature drive durability scheme is confirmed, and the single cycle duration A (min), number of cycles B, alternating temperature amplitude of the environmental chamber and total duration (A×B) of the high and low temperature drive durability test are set.

[0054] In one embodiment, the self-heating durability test parameters include the duration of a single self-heating cycle and the self-heating trigger temperature;

[0055] The determination of self-heating durability test parameters of the target motor during the self-heating process based on the high and low temperature drive durability test parameters of the target electric drive includes:

[0056] The total self-heating test duration is determined based on the type of target motor.

[0057] The duration of a single self-heating cycle is determined based on the total self-heating test duration and the number of cycles.

[0058] For example, based on the pulsed battery self-heating design requirements of the electric drive system and the durability test acceleration model, combined with the confirmed ambient chamber alternating temperature, the duration of the single self-heating cycle C (min) required for the durability verification of the self-heating function is confirmed. Based on the number of cycles B confirmed in the high and low temperature drive durability test parameters, it can be determined that the duration of entering self-heating in a single cycle in B cycles is C / B.

[0059] In one embodiment, the step of performing a high-low temperature drive durability test on the target electric drive based on the high-low temperature drive durability test parameters, and then performing a self-heating durability test on the target motor based on the self-heating durability test parameters, includes:

[0060] When the ambient temperature chamber of the target electric drive is cooled down to the self-heating trigger temperature, a self-heating durability test is performed on the target motor based on the single self-heating duration.

[0061] For example, this method utilizes the time of no-load operation during high and low temperature durability testing (the cooling process is the no-load process) to perform battery self-heating, which can simultaneously verify the drive durability of the electric drive system and the battery self-heating durability.

[0062] In one embodiment, the step of simultaneously performing a self-heating durability test on the target motor based on the self-heating durability test parameters includes:

[0063] The self-heating durability test of the target motor is performed based on the single self-heating duration by transmitting voltage signals between the test bench and the controller.

[0064] For example, in the high and low temperature durability test, an automatic entry and exit from the battery self-heating condition is added through bench control. The battery self-heating is carried out during the unloaded operation time in the high and low temperature durability test to conduct a self-heating durability test on the target motor.

[0065] In one embodiment, the self-heating durability test of the target motor based on the single self-heating duration via voltage signal transmission between the test bench and the controller includes:

[0066] The control unit sends a low-level signal to the controller.

[0067] When the ambient temperature of the target electric drive chamber drops to the self-heating trigger temperature, the test bench is controlled to send a high-level signal to the controller.

[0068] When the controller receives the high-level signal, a self-heating durability test is performed on the target motor based on the single self-heating duration.

[0069] For example, the load test for high and low temperature drive durability of the electric drive system requires setting the load on the test bench according to the confirmed high and low temperature drive durability test parameters to achieve a continuous cycle test of low temperature-high temperature-low temperature. The self-heating function of the electric drive system is set to communicate with the controller through the test bench. The controller controls the entry and exit of the self-heating function by judging the voltage signal sent by the test bench. The voltage signal sent by the test bench to the motor controller is initially low. When the ambient temperature drops from high to low to the self-heating trigger temperature D℃ (the self-heating trigger temperature), the test bench sends a high-level signal to the motor controller and then resets it to zero. After receiving the high level, the controller controls the battery self-heating to start. The duration of a single self-heating cycle is C / B (min). After the controller completes one battery self-heating cycle, it automatically exits until it receives the next high level from the test bench.

[0070] In one embodiment, the above method further includes:

[0071] When performing high and low temperature drive durability tests on the target electric drive based on the high and low temperature drive durability test parameters and self-heating durability tests on the target motor based on the self-heating durability test parameters, the high and low temperature drive durability acceptance parameters and self-heating durability acceptance parameters are obtained simultaneously.

[0072] For example, the motor controller receives signals from the test bench to control the motor and perform overall testing. In one cycle of the high and low temperature durability test, the ambient temperature alternates. The test bench is primarily loaded during the heating process and part of the high-temperature holding process, while it is unloaded during the temperature drop process and part of the low-temperature holding process. When unloaded, if the temperature drops to the self-heating trigger temperature, the test bench sends a high-level signal to the controller, which then enters the self-heating function and performs battery self-heating for a duration of C / B (min). After completion, the controller automatically shuts off the self-heating function until it receives the next high-level signal from the test bench. Next, the controller and motor are cooled in the ambient temperature chamber and then subjected to another load test. Thus, a single cycle of high and low temperature load testing and a C / B (min) duration battery self-heating test constitute a comprehensive operating condition. This comprehensive operating condition is performed B times.

[0073] For example, the acceptance criteria for motors, controllers, and reducers that have completed the above durability tests are as follows: a) Visual inspection: No obvious rust on the surface of the housing; b) Deformation test: No obvious cracks or mechanical damage to the sample, and no abnormal noise from the bearings; c) Air tightness test: The water channel and the whole machine pass the air tightness test; d) Performance test: External characteristics, high efficiency zone ratio, and continuous performance degradation <5%; e) Insulation test: The machine can start normally after the test, and the DC terminal-housing insulation test passes.

[0074] For example, the above testing method is closer to the self-heating application scenario, which improves the reliability of the durability test. It can simultaneously conduct high and low temperature drive durability tests of the electric drive system and battery self-heating durability tests, effectively reducing the overall durability test cycle.

[0075] Furthermore, as a response to the above Figure 1 In addition to the implementation of the method shown, this embodiment of the invention also provides a testing device for verifying the durability of a motor, used for the above-mentioned... Figure 1 The method shown is implemented accordingly. This device embodiment corresponds to the foregoing method embodiment. For ease of reading, this device embodiment will not repeat the details of the foregoing method embodiment, but it should be clear that the device in this embodiment can implement all the contents of the foregoing method embodiment. Figure 2 As shown, the device includes: a first determining unit 21, a second determining unit 22, and a testing unit 23, wherein...

[0076] The first determining unit 21 is used to determine the high and low temperature drive durability test parameters of the target electric drive based on the type of the target electric drive.

[0077] The second determining unit 22 is used to determine the self-heating durability test parameters of the target motor during the self-heating process based on the high and low temperature drive durability test parameters of the target electric drive, wherein the self-heating process is the process of the target motor self-heating the battery.

[0078] Test unit 23 is used to simultaneously perform self-heating durability test on the target motor based on the self-heating durability test parameters during the high and low temperature drive durability test of the target electric drive using the high and low temperature drive durability test parameters.

[0079] For example, the high and low temperature drive durability test parameters include single cycle duration, number of cycles, alternating temperature amplitude of the environmental chamber, and total test duration;

[0080] The determination of high and low temperature drive durability test parameters for the target electric drive based on the type of target electric drive includes:

[0081] The single cycle duration, number of cycles, and alternating temperature amplitude of the environmental chamber are determined based on the type of the target electric drive.

[0082] The total test duration is determined based on the duration of a single loop and the number of loops.

[0083] For example, the self-heating durability test parameters include the duration of a single self-heating cycle and the self-heating trigger temperature;

[0084] The determination of self-heating durability test parameters of the target motor during the self-heating process based on the high and low temperature drive durability test parameters of the target electric drive includes:

[0085] The total self-heating test duration is determined based on the type of target motor.

[0086] The duration of a single self-heating cycle is determined based on the total self-heating test duration and the number of cycles.

[0087] For example, when performing a high-low temperature drive durability test on the target electric drive based on the high-low temperature drive durability test parameters, performing a self-heating durability test on the target motor based on the self-heating durability test parameters includes:

[0088] When the ambient temperature chamber of the target electric drive is cooled down to the self-heating trigger temperature, a self-heating durability test is performed on the target motor based on the single self-heating duration.

[0089] For example, the step of simultaneously performing a self-heating durability test on the target motor based on the self-heating durability test parameters includes:

[0090] The self-heating durability test of the target motor is performed based on the single self-heating duration by transmitting voltage signals between the test bench and the controller.

[0091] For example, the self-heating durability test of the target motor based on the single self-heating duration via voltage signal transmission between the test bench and the controller includes:

[0092] The control unit sends a low-level signal to the controller.

[0093] When the ambient temperature of the target electric drive chamber drops to the self-heating trigger temperature, the test bench is controlled to send a high-level signal to the controller.

[0094] When the controller receives the high-level signal, a self-heating durability test is performed on the target motor based on the single self-heating duration.

[0095] For example, the above-mentioned unit is also used for:

[0096] When performing high and low temperature drive durability tests on the target electric drive based on the high and low temperature drive durability test parameters and self-heating durability tests on the target motor based on the self-heating durability test parameters, the high and low temperature drive durability acceptance parameters and self-heating durability acceptance parameters are obtained simultaneously.

[0097] By employing the above technical solution, the present invention provides a testing device for verifying motor durability. Addressing the lack of a simpler and more realistic method for verifying motor durability, the present invention determines high and low temperature drive durability test parameters for the target electric drive based on its type; it then determines self-heating durability test parameters for the target motor during its self-heating process based on these parameters, where the self-heating process refers to the target motor's battery self-heating process. During the high and low temperature drive durability test of the target electric drive using the aforementioned high and low temperature drive durability test parameters, the self-heating durability test of the target motor is simultaneously performed based on the aforementioned self-heating durability test parameters. In this solution, for electric drive systems with pulsed battery self-heating functionality, the high and low temperature drive durability verification scheme for the electric drive system is optimized and supplemented. A battery self-heating condition is added to the high and low temperature durability test conditions, utilizing the time allotted for the high and low temperature durability test for battery self-heating. This allows for simultaneous verification of the electric drive system's drive durability and battery self-heating durability, effectively improving the reliability verification time of the electric drive system and providing relevant evaluation criteria for electric drive systems equipped with pulsed battery self-heating.

[0098] The processor contains a kernel, which retrieves the corresponding program unit from memory. One or more kernels can be configured, and by adjusting kernel parameters, a method for verifying motor durability can be implemented, addressing the lack of a simpler and more realistic method for verifying motor durability.

[0099] This invention provides a computer-readable storage medium including a stored program that, when executed by a processor, implements the test method for verifying motor durability.

[0100] This invention provides a processor for running a program, wherein the program executes the test method for verifying motor durability.

[0101] This invention provides an electronic device, which includes at least one processor and at least one memory connected to the processor; wherein the processor is used to call program instructions in the memory to execute the test method for verifying motor durability as described above.

[0102] This invention provides an electronic device 30, such as... Figure 3As shown, the electronic device includes at least one processor 301, and at least one memory 302 and bus 303 connected to the processor; wherein, the processor 301 and the memory 302 communicate with each other through the bus 303; the processor 301 is used to call program instructions in the memory to execute the above-mentioned test method for verifying the durability of the motor.

[0103] The smart electronic devices mentioned in this article can be PCs, tablets, mobile phones, etc.

[0104] This application also provides a computer program product, which, when executed on a process management electronic device, is suitable for executing a program that initializes the following method steps:

[0105] Determine the high and low temperature drive durability test parameters of the target electric drive based on the type of target electric drive;

[0106] The self-heating durability test parameters of the target motor during the self-heating process are determined based on the high and low temperature drive durability test parameters of the target electric drive, wherein the self-heating process is the process by which the target motor self-heats the battery.

[0107] During the high and low temperature drive durability test of the target electric drive using the high and low temperature drive durability test parameters, the self-heating durability test of the target motor is also performed simultaneously based on the self-heating durability test parameters.

[0108] Furthermore, the high and low temperature drive durability test parameters include single cycle duration, number of cycles, alternating temperature amplitude of the environmental chamber, and total test duration;

[0109] The determination of high and low temperature drive durability test parameters for the target electric drive based on the type of target electric drive includes:

[0110] The single cycle duration, number of cycles, and alternating temperature amplitude of the environmental chamber are determined based on the type of the target electric drive.

[0111] The total test duration is determined based on the duration of a single loop and the number of loops.

[0112] Furthermore, the self-heating durability test parameters include the duration of a single self-heating cycle and the self-heating trigger temperature;

[0113] The determination of self-heating durability test parameters of the target motor during the self-heating process based on the high and low temperature drive durability test parameters of the target electric drive includes:

[0114] The total self-heating test duration is determined based on the type of target motor.

[0115] The duration of a single self-heating cycle is determined based on the total self-heating test duration and the number of cycles.

[0116] Furthermore, the step of performing a high-low temperature drive durability test on the target electric drive based on the high-low temperature drive durability test parameters, and then performing a self-heating durability test on the target motor based on the self-heating durability test parameters, includes:

[0117] When the ambient temperature chamber of the target electric drive is cooled down to the self-heating trigger temperature, a self-heating durability test is performed on the target motor based on the single self-heating duration.

[0118] Furthermore, the step of simultaneously performing a self-heating durability test on the target motor based on the self-heating durability test parameters includes:

[0119] The self-heating durability test of the target motor is performed based on the single self-heating duration by transmitting voltage signals between the test bench and the controller.

[0120] Furthermore, the self-heating durability test of the target motor based on the single self-heating duration, conducted by transmitting a voltage signal between the test bench and the controller, includes:

[0121] The control unit sends a low-level signal to the controller.

[0122] When the ambient temperature of the target electric drive chamber drops to the self-heating trigger temperature, the test bench is controlled to send a high-level signal to the controller.

[0123] When the controller receives the high-level signal, a self-heating durability test is performed on the target motor based on the single self-heating duration.

[0124] Furthermore, the above methods also include:

[0125] When performing high and low temperature drive durability tests on the target electric drive based on the high and low temperature drive durability test parameters and self-heating durability tests on the target motor based on the self-heating durability test parameters, the high and low temperature drive durability acceptance parameters and self-heating durability acceptance parameters are obtained simultaneously.

[0126] It should be noted that the descriptions of each embodiment in the above embodiments have different focuses. For parts that are not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.

[0127] Those skilled in the art will understand that embodiments of this application can be provided as methods, systems, or computer program products. Therefore, this application can take the form of a completely hardware embodiment, a completely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, this application can take the form of a computer program product embodied on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0128] This application is described with reference to flowchart illustrations and / or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of this application. It will be understood that each block of the flowchart illustrations and / or block diagrams, and combinations of blocks in the flowchart illustrations and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, special-purpose computer, embedded computer, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create a machine for implementing the flowchart illustrations. Figure 1 One or more processes and / or boxes Figure 1 A device that provides the functions specified in one or more boxes.

[0129] These computer program instructions may also be stored in a computer-readable storage medium that can direct a computer or other programmable data processing device to function in a particular manner, such that the instructions stored in the computer-readable storage medium produce an article of manufacture including instruction means, which are implemented in a process Figure 1 One or more processes and / or boxes Figure 1 The function specified in one or more boxes.

[0130] These computer program instructions may also be loaded onto a computer or other programmable data processing equipment to cause a series of operational steps to be performed on the computer or other programmable equipment to produce a computer-implemented process, thereby providing instructions that execute on the computer or other programmable equipment for implementing the process. Figure 1 One or more processes and / or boxes Figure 1 The steps of the function specified in one or more boxes.

[0131] This application also provides a computer program product, which includes computer software instructions that, when executed on a processing device, cause the processing device to perform actions such as... Figure 1 The control flow of the memory in the corresponding embodiment.

[0132] A computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, all or part of the flow or function according to the embodiments of this application is generated. The computer may be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device. The computer instructions may be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another. For example, computer instructions may be transmitted from one website, computer, server, or data center to another website, computer, server, or data center via wired (e.g., coaxial cable, fiber optic, digital subscriber line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) means. The computer-readable storage medium may be any available medium that a computer can store or a data storage device such as a server or data center that integrates one or more available media. The available medium may be a magnetic medium (e.g., floppy disk, hard disk, magnetic tape), an optical medium (e.g., DVD), or a semiconductor medium (e.g., solid-state disk (SSD)).

[0133] Those skilled in the art will clearly understand that, for the sake of convenience and brevity, the specific working processes of the systems, devices, and units described above can be referred to the corresponding processes in the foregoing method embodiments, and will not be repeated here.

[0134] In the several embodiments provided in this application, it should be understood that the disclosed systems, apparatuses, and methods can be implemented in other ways. For example, the apparatus embodiments described above are merely illustrative; for instance, the division of units is only a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the coupling or direct coupling or communication connection shown or discussed may be through some interfaces, or indirect coupling or communication connection between apparatuses or units, and may be electrical, mechanical, or other forms.

[0135] The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.

[0136] Furthermore, the functional units in the various embodiments of this application can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit. The integrated unit can be implemented in hardware or as a software functional unit.

[0137] If the integrated unit is implemented as 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 this application, in essence, or the part that contributes to the prior art, or all or part of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods of the various embodiments of this application. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, portable hard drives, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical disks.

[0138] The above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit it. Although this application 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 of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application.

Claims

1. A test method for verifying the durability of an electric motor, characterized in that, include: Determine the high and low temperature drive durability test parameters of the target electric drive based on the type of target electric drive; The self-heating durability test parameters of the target motor during the self-heating process are determined based on the high and low temperature drive durability test parameters of the target electric drive, wherein the self-heating process is the process by which the target motor self-heats the battery. During the high and low temperature drive durability test of the target electric drive using the high and low temperature drive durability test parameters, the self-heating durability test of the target motor is also performed simultaneously based on the self-heating durability test parameters. The high and low temperature drive durability test parameters include single cycle duration, number of cycles, alternating temperature amplitude of the environmental chamber, and total test duration. The determination of high and low temperature drive durability test parameters for the target electric drive based on the type of target electric drive includes: The single cycle duration, number of cycles, and alternating temperature amplitude of the environmental chamber are determined based on the type of the target electric drive. The total test duration is determined based on the single loop duration and the number of loops. The self-heating durability test parameters include the duration of a single self-heating cycle and the self-heating trigger temperature. The determination of self-heating durability test parameters of the target motor during the self-heating process based on the high and low temperature drive durability test parameters of the target electric drive includes: The total self-heating test duration is determined based on the type of target motor. The duration of a single self-heating cycle is determined based on the total self-heating test duration and the number of cycles.

2. The method according to claim 1, characterized in that, The step of performing a high-low temperature drive durability test on the target electric drive using the high-low temperature drive durability test parameters, and then performing a self-heating durability test on the target motor based on the self-heating durability test parameters, includes: When the ambient temperature chamber of the target electric drive is cooled down to the self-heating trigger temperature, a self-heating durability test is performed on the target motor based on the single self-heating duration.

3. The method according to claim 2, characterized in that, The step of simultaneously performing a self-heating durability test on the target motor based on the self-heating durability test parameters includes: The self-heating durability test of the target motor is performed based on the single self-heating duration by transmitting voltage signals between the test bench and the controller.

4. The method according to claim 3, characterized in that, The self-heating durability test of the target motor based on the single self-heating duration, conducted by transmitting voltage signals between the test bench and the controller, includes: The control unit sends a low-level signal to the controller. When the ambient temperature of the target electric drive chamber drops to the self-heating trigger temperature, the test bench is controlled to send a high-level signal to the controller. When the controller receives the high-level signal, a self-heating durability test is performed on the target motor based on the single self-heating duration.

5. The method according to claim 1, characterized in that, Also includes: When performing high and low temperature drive durability tests on the target electric drive based on the high and low temperature drive durability test parameters and self-heating durability tests on the target motor based on the self-heating durability test parameters, the high and low temperature drive durability acceptance parameters and self-heating durability acceptance parameters are obtained simultaneously.

6. A testing device for verifying the durability of an electric motor, characterized in that, include: The first determining unit is used to determine the high and low temperature drive durability test parameters of the target electric drive based on the type of the target electric drive. The second determining unit is used to determine the self-heating durability test parameters of the target motor during the self-heating process based on the high and low temperature drive durability test parameters of the target electric drive, wherein the self-heating process is the process of the target motor self-heating the battery. The testing unit is used to simultaneously perform a self-heating durability test on the target motor based on the self-heating durability test parameters during the high and low temperature drive durability test of the target electric drive using the high and low temperature drive durability test parameters. The high and low temperature drive durability test parameters include single cycle duration, number of cycles, alternating temperature amplitude of the environmental chamber, and total test duration. The determination of high and low temperature drive durability test parameters for the target electric drive based on the type of target electric drive includes: The single cycle duration, number of cycles, and alternating temperature amplitude of the environmental chamber are determined based on the type of the target electric drive. The total test duration is determined based on the single loop duration and the number of loops. The self-heating durability test parameters include the duration of a single self-heating cycle and the self-heating trigger temperature. The determination of self-heating durability test parameters of the target motor during the self-heating process based on the high and low temperature drive durability test parameters of the target electric drive includes: The total self-heating test duration is determined based on the type of target motor. The duration of a single self-heating cycle is determined based on the total self-heating test duration and the number of cycles.

7. A computer-readable storage medium, characterized in that, The computer-readable storage medium includes a stored program, wherein, when the program is executed by a processor, it implements the steps of the test method for verifying the durability of an electric motor as described in any one of claims 1 to 5.

8. An electronic device, characterized in that, The electronic device includes at least one processor and at least one memory connected to the processor; wherein the processor is configured to call program instructions in the memory to execute the steps of the test method for verifying motor durability as described in any one of claims 1 to 5.

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