Energy recovery type DC motor aging test equipment

Abstract

The invention relates to the technical field of aging test, in particular to energy recovery type direct current motor aging test equipment, which comprises a power supply, a switch, a central control unit and a current detection resistor, the switch is electrically connected with the current detection resistor and the central control unit; the other end of the current detection resistor is grounded; the central control unit is electrically connected with the power supply; the power supply is electrically connected with an external to-be-tested motor, and the other end of the external to-be-tested motor is electrically connected with the switch; the external to-be-tested motor is connected with a to-be-tested generator through a transmission mechanism. The generator to be tested is electrically connected with the power supply, and the other end of the generator to be tested is grounded; and the transmission mechanism is electrically connected with the central control unit. The direct-current motor aging test device has the advantage of solving the problem that an existing direct-current motor aging test device is low in energy recycling efficiency.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of aging test, and in particular to an energy recovery type direct current motor aging test equipment. BACKGROUND

[0002] Motors are indispensable important components in mechanical equipment. Electric motors often need to be tested for functionality and aging before they are shipped out of the factory to verify product performance and improve product reliability. The purpose of motor aging test by motor manufacturers is to detect the working state of the motor after a long time of operation, evaluate its quality and performance, and verify and improve the durability and reliability of the motor. The contents of motor aging test include: 1. Motor load continuous operation test: – Test the working state and temperature change of the motor under rated working load; – Continuously monitor the operating current, power and speed of the motor, and record the running time; – Check whether the motor has abnormal noise, vibration and other phenomena; 2. Motor start-stop cycle test: – Perform multiple start-stop cycle tests to simulate actual working environment; – Observe the current fluctuation and vibration during the start and stop of the motor, and detect whether there is any abnormality; – Record the time and process parameters of each start-stop cycle to evaluate the start reliability of the motor; 3. Motor high temperature aging test – continuous operation test of the motor in high temperature environment: – Increase the ambient temperature to a specified temperature, continuously run the motor, and observe its working state; – After the test, check whether the insulation performance and appearance of the motor are damaged; 4. Motor overload test – overload test of the motor above rated load: – Gradually increase the load and observe the running state and temperature change of the motor; – Evaluate the overload capacity and thermal protection performance of the motor according to the test results; In addition to the motor manufacturers in different industry fields making regulations on motor test, the relevant departments also make regulations on the aging test of motors for specific purposes. For example, the high temperature test of the drive motor system in “GB / T 18488—2023 Electric Drive Motor System for Electric Vehicles” stipulates that the drive motor should be able to work continuously for 2 hours at rated voltage, continuous torque, continuous power and 65-125℃ working temperature, without power limit or over-temperature alarm failure. After returning to normal, the drive motor system should be able to work normally at rated voltage for not less than 10 seconds under peak torque and peak power.

[0003] For example, Figure 1As shown, the existing DC motor aging test equipment, its energy is basically dissipated in the experimental load, the problem of low energy recycling efficiency. SUMMARY

[0004] In order to solve the problem of low energy recycling efficiency of the existing DC motor aging test equipment, the application provides an energy recovery type DC motor aging test equipment.

[0005] The above invention of the application is realized by the following technical scheme: An energy recovery type DC motor aging test equipment, comprising a power supply, a switch, a central control unit and a current detection resistor; the switch is electrically connected with the current detection resistor and the central control unit; the other end of the current detection resistor is grounded; the central control unit is electrically connected with the power supply; the power supply is electrically connected with an external motor to be tested, and the other end of the external motor to be tested is electrically connected with the switch; the external motor to be tested is connected with a motor to be tested through a transmission mechanism; the motor to be tested is electrically connected with the power supply, and the other end of the motor to be tested is grounded; the transmission mechanism is electrically connected with the central control unit. The corresponding aging test method of the energy recovery type DC motor aging test equipment, comprising: Obtaining user set parameters, wherein the user set parameters include motor power, voltage, current, speed and torque parameters; Obtaining system parameters, wherein the system parameters include power supply voltage configuration parameters, PWM frequency parameters, switch parameters, temperature sensor parameters and voltage and current sensor parameters; Setting PWM frequency and PWM duty cycle according to the user set parameters and the system parameters, and triggering a test start instruction according to the PWM frequency and the PWM duty cycle; Obtaining the aging test result corresponding to the test start instruction, wherein the current of the motor to be tested flows through the loop composed of the external motor to be tested, the switch, the current detection resistor and the power supply, and the current of the motor to be tested flows through the loop composed of the power supply, the external motor to be tested, the switch, the current detection resistor and the motor to be tested.

[0006] By adopting the above technical scheme, when the motor is subjected to aging test, the power supply, the central control unit, the switch and the current detection resistor are combined into an electronic load. After the power supply accesses the input of external electric energy, the load provides electric energy for the motor to be tested. The motor to be tested converts the electric energy into mechanical energy, which is transmitted to the motor to be tested through the transmission mechanism. The motor to be tested converts the mechanical energy into electric energy, so that the electric energy can be converted into mechanical energy during the aging test, and the mechanical energy can be recovered to electric energy, forming a recycling of energy, thereby achieving the effect of saving energy.

[0007] The application can be further configured in a preferred example as follows: the PWM frequency and the PWM duty cycle are set according to the user-set parameter and the system parameter, and a test start instruction is triggered, specifically including: The user-set parameter is compared with the system parameter to obtain a comparison result; When the comparison result is a comparison pass, the PWM frequency and the PWM duty cycle are set according to the user-set parameter and the system parameter, and a test start instruction is triggered according to the PWM frequency and the PWM duty cycle.

[0008] By adopting the above technical solution, the user-set parameter is compared with the system parameter, and the test start instruction is triggered according to the comparison result, so that the parameter set by the user before the test can be verified, thereby reducing the test failure caused by unreasonable parameter setting and improving the stability of the test.

[0009] The application can be further configured in a preferred example as follows: the PWM frequency and the PWM duty cycle are set according to the user-set parameter and the system parameter, and a test start instruction is triggered, specifically including: The test output energy is calculated according to the PWM frequency and the PWM duty cycle, wherein the test output energy includes input system energy and recovered energy; The test start instruction is triggered according to the test output energy.

[0010] By adopting the above technical solution, the corresponding recovered energy is calculated, so that the recovered energy can be used for the function of the aging test of the motor, so that the energy input from the outside can be reduced by recovering the energy in the aging test, thereby achieving the effect of saving energy.

[0011] The application can be further configured in a preferred example as follows: the calculation of the recovered energy includes: The motor output efficiency of the to-be-tested motor and the power generation output efficiency of the to-be-tested generator are obtained; The recovered energy is calculated according to the input system energy, the motor output efficiency and the power generation output efficiency.

[0012] By adopting the above technical solution, the output efficiency of the to-be-tested motor and the to-be-tested generator is obtained, so that the recovered energy can be accurately calculated, thereby ensuring the stability of the test output energy.

[0013] The application can be further configured in a preferred example as follows: the calculation of the recovered energy according to the input system energy, the motor output efficiency and the power generation output efficiency specifically includes: The energy of the input system, the motor output efficiency and the power generation output efficiency are input into the following formula to calculate the recovered energy: E c = E in × η M × η G , wherein E c is the recovered energy, E in is the energy of the input system, η M is the motor output efficiency, and η G is the power generation output efficiency.

[0014] By adopting the technical scheme, the recovered energy can be calculated by the formula, and the energy recovery rate can also be obtained.

[0015] The second application purpose is achieved by the following technical scheme: The energy recovery type DC motor aging test device comprises a power supply, a switch, a central control unit and a current detection resistor. The energy recovery type DC motor aging test device comprises: A first parameter acquisition module is configured to acquire user-set parameters, wherein the user-set parameters include motor power, voltage, current, rotating speed and torque parameters. A second parameter acquisition module is configured to acquire system parameters, wherein the system parameters include power supply voltage configuration parameters, PWM frequency parameters, switch parameters, temperature sensor parameters and voltage and current sensor parameters. A test start control module is configured to set PWM frequency and PWM duty cycle according to the user-set parameters and the system parameters, and trigger a test start instruction according to the PWM frequency and the PWM duty cycle. A test result recording module is configured to acquire an aging test result corresponding to the test start instruction, wherein the current of the to-be-tested motor flows through a loop composed of the external to-be-tested motor, the switch, the current detection resistor and the power supply, and the current of the to-be-tested generator flows through a loop composed of the power supply, the external to-be-tested motor, the switch, the current detection resistor and the to-be-tested generator.

[0016] By adopting the above technical solution, when performing an aging test on a motor, the power supply, central control unit, switch and current-sensing resistor are combined into an electronic load. After the power supply is connected to the input of external electric energy, the load provides electric energy to the motor to be tested. The motor to be tested converts the electric energy into mechanical energy and transmits it to the generator to be tested through a transmission mechanism. The generator to be tested converts the mechanical energy into electric energy. Therefore, during the aging test, the electric energy can be converted into mechanical energy and then the mechanical energy can be recovered into electric energy, forming an energy recycling process, thereby achieving the effect of saving energy.

[0017] The third objective of this application is achieved through the following technical solutions: A computer device includes a memory, a processor, and a computer program stored in the memory and executable on the processor. When the processor executes the computer program, the steps of the aging test method in the above-mentioned energy recovery type DC motor aging test device are implemented.

[0018] The fourth objective of this application is achieved through the following technical solutions: A computer-readable storage medium stores a computer program, which, when executed by a processor, implements the steps of the aging test method in the above-mentioned energy recovery type DC motor aging test device.

[0019] In summary, this application includes at least one of the following beneficial technical effects: 1. When performing aging tests on motors, the power supply, central control unit, switch, and current-sense resistor are combined into an electronic load. After the power supply is connected to the input of external power, the load provides power to the motor under test. The motor under test converts the electrical energy into mechanical energy and transmits it to the generator under test through the transmission mechanism. The generator under test converts the mechanical energy into electrical energy. In this way, during the aging test, electrical energy can be converted into mechanical energy, and then the mechanical energy can be recovered into electrical energy, forming an energy recycling process, thereby achieving the effect of saving energy. 2. By comparing the user-set parameters with the system parameters, the test start instruction is triggered according to the comparison results, so that the user-set parameters can be verified before the test, thereby reducing test failures caused by unreasonable parameter settings and improving test stability; 3. By obtaining the output efficiency of the motor and generator under test, the recovered energy can be accurately calculated, thereby ensuring the stability of the test output energy. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is the basic structural block diagram of the existing DC motor aging test equipment.

[0021] Figure 2It is a single-channel constant current electronic load in the embodiment of this application.

[0022] Figure 3 It is a multi-channel constant current electronic load in the embodiment of the present application.

[0023] Figure 4 This is the working process of constant current electronic load.

[0024] Figure 5 This is a principle block diagram of an energy recovery type DC motor aging test system in one embodiment of the present application; Figure 6 It is a schematic diagram of a device in one embodiment of the present application. DETAILED DESCRIPTION

[0025] The present application is further described in detail below with reference to the accompanying drawings.

[0026] In one embodiment, if Figure 2 As shown, the present application discloses an energy recovery type DC motor aging test device, including a power supply, a switch, a central control unit and a current sensing resistor; the switch is electrically connected to the current sensing resistor and the central control unit; the other end of the current sensing resistor is grounded; the central control unit is electrically connected to the power supply; the power supply is electrically connected to an external motor to be tested, and the other end of the external motor to be tested is electrically connected to the switch; the external motor to be tested is connected to a generator to be tested through a transmission mechanism; the generator to be tested is electrically connected to the power supply, and the other end of the generator to be tested is grounded; the transmission mechanism is electrically connected to the central control unit.

[0027] Optional, such as Figure 3 As shown, through the setting of the above structure, the electronic loads of multiple channels can be connected in parallel through the control of the external PC end, so that aging tests can be performed on multiple motors to be tested simultaneously, and redundancy can be increased to improve the reliability of the system.

[0028] like Figure 4 As shown, the specific steps include: S10: Obtaining user-set parameters, wherein the user-set parameters include motor power, voltage, current, speed, and torque parameters.

[0029] Specifically, before the test begins, the user inputs corresponding motor power, voltage, current, speed, and torque parameters according to actual needs, thereby obtaining the user-set parameters.

[0030] S20: Acquire system parameters, wherein the system parameters include power supply voltage configuration parameters, PWM frequency parameters, switch parameters, temperature sensor parameters, and voltage and current sensor parameters.

[0031] In the embodiment, the system parameters refer to the working parameters of each device in the system for aging test of the motor.

[0032] Specifically, after the devices for aging test are set up, the working parameters of the devices are obtained from the power supply, switch and sensor, etc., so as to obtain the power supply voltage configuration parameter, output PWM frequency parameter, switch parameter, temperature sensor parameter and voltage and current sensor parameter, etc.

[0033] S30: setting the PWM frequency and PWM duty cycle according to the user setting parameter and system parameter, and triggering the test start instruction according to the PWM frequency and PWM duty cycle.

[0034] In the embodiment, the PWM frequency and PWM duty cycle refer to the pulse signal for controlling the action of the motor to be tested.

[0035] Specifically, after the user setting parameter and system parameter are obtained, the pulse parameters, i.e., the PWM frequency and PWM duty cycle, for controlling the working of the motor to be tested are generated according to the user setting parameter, and the test start instruction is triggered according to the pulse parameters.

[0036] S40: obtaining the aging test result corresponding to the test start instruction, wherein the current of the motor to be tested flows through a loop composed of the external motor to be tested, switch, current detection resistor and power supply, and the current of the motor to be tested flows through a loop composed of the power supply, external motor to be tested, switch, current detection resistor and motor to be tested.

[0037] Specifically, after the test start instruction is obtained, the motor to be tested and motor to be tested are controlled to operate according to the PWM frequency and PWM duty cycle, and the operating parameters of the motor to be tested and motor to be tested in the aging test process are obtained, so as to obtain the aging test result.

[0038] In the embodiment, the motor to be tested and motor to be tested can also be the same motor or generator. In the aging test process, the motor to be tested and motor to be tested respectively form a loop with the switch and power supply, etc., so that the energy generated in the test process can be recycled, thereby saving energy.

[0039] In an embodiment, in step S30, i.e., setting the PWM frequency and PWM duty cycle according to the user setting parameter and system parameter, and triggering the test start instruction, specifically includes: S31: comparing the user setting parameter with the system parameter to obtain a comparison result.

[0040] Specifically, the user-set parameters are compared with the system parameters to obtain a corresponding comparison result, so that it can be compared whether the user-set parameters exceed the range that can be supported by the device during operation, for example, whether the user-set motor torque parameter exceeds the torque parameter that can be supported by the to-be-tested motor and / or the to-be-tested generator.

[0041] S32: When the comparison result is a comparison pass, the PWM frequency and the PWM duty cycle are set according to the user-set parameters and the system parameters, and a test start instruction is triggered according to the PWM frequency and the PWM duty cycle.

[0042] Specifically, if the comparison passes, the PWM frequency and the PWM duty cycle are set according to the comparison in step S30, and a test start instruction is triggered according to the PWM frequency and the PWM duty cycle.

[0043] In an embodiment, in step S30 or step S32, that is, triggering the test start instruction according to the PWM frequency and the PWM duty cycle, specifically includes: S301: The test output energy is calculated according to the PWM frequency and the PWM duty cycle, wherein the test output energy includes the energy input into the system and the recovered energy.

[0044] Specifically, after obtaining the PWM frequency and the PWM duty cycle, the test output energy is calculated according to the device condition of the aging test, wherein after calculating the required test output energy, the energy recovered by the energy is calculated, so as to calculate the energy input into the system, that is, the energy that needs to be input by the external power supply.

[0045] S302: A test start instruction is triggered according to the test output energy.

[0046] Specifically, after calculating the test output energy, the test start instruction is triggered according to the test output energy to control the aging device to run and perform the aging test on the to-be-tested motor and the to-be-tested generator.

[0047] In an embodiment, calculating the recovered energy includes: S3011: The motor output efficiency of the to-be-tested motor and the generator output efficiency of the to-be-tested generator are obtained.

[0048] Specifically, after the aging test starts, the conversion efficiency of the to-be-tested motor and the to-be-tested generator from mechanical energy to electrical energy is obtained by the working state of the to-be-tested motor and the to-be-tested generator, so as to obtain the motor output efficiency and the generator output efficiency.

[0049] S3012: The recovered energy is calculated according to the energy input into the system, the motor output efficiency and the generator output efficiency.

[0050] Specifically, the energy input to the system, the motor output efficiency, and the power generation output efficiency are input into the following formula to calculate the recovered energy: E c = E in × η M × η G , where E c is the recovered energy, E in is the energy input to the system, η M is the motor output efficiency, η G is the power generation output efficiency.

[0051] It can be understood that the recovered energy is a dynamic adjustment process starting from the aging test. At the beginning of the aging test, since the motor to be tested and the generator to be tested have not started working yet, the energy input to the system is equal to the test output energy. At the beginning of the aging test, the motor to be tested and the generator to be tested start working. During the test, the motor to be tested and the generator to be tested convert mechanical energy into electrical energy, and return the electrical energy to the power supply in the load through the corresponding circuit, thereby reducing the energy input to the system while maintaining the system output energy unchanged, thereby saving energy.

[0052] It should be understood that the size of the serial numbers of the steps in the above embodiments does not mean the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of this application.

[0053] In one embodiment, an energy recovery type DC motor aging test device is provided, which corresponds to the aging test method of the energy recovery type DC motor aging test device in the above embodiment. Figure 5 As shown, the energy recovery type DC motor aging test device includes a first parameter acquisition module, a second parameter acquisition module, a test start control module and a test result recording module. The functional modules are described in detail as follows: A first parameter acquisition module is used to acquire user-set parameters, wherein the user-set parameters include motor power, voltage, current, speed and torque parameters; A second parameter acquisition module is used to acquire system parameters, wherein the system parameters include power supply voltage configuration parameters, PWM frequency parameters, switch parameters, temperature sensor parameters, and voltage and current sensor parameters; The test start control module is used to set the PWM frequency and PWM duty cycle according to the user-set parameters and system parameters, and trigger the test start instruction according to the PWM frequency and PWM duty cycle; The test result recording module is configured to obtain the aging test result corresponding to the test start instruction, wherein the current of the motor under test flows through a loop composed of the external motor under test, the switch, the current detection resistor and the power supply, and the current of the generator under test flows through a loop composed of the power supply, the external generator under test, the switch, the current detection resistor and the generator under test.

[0054] Optionally, the test start control module comprises: The data comparison sub-module is configured to compare the user setting parameter with the system parameter to obtain a comparison result. The test start control sub-module is configured to, when the comparison result is a comparison pass, set the PWM frequency and the PWM duty cycle according to the user setting parameter and the system parameter, and trigger the test start instruction according to the PWM frequency and the PWM duty cycle.

[0055] Optionally, the test start control module or the test start control sub-module comprises: The output energy calculation unit is configured to calculate the test output energy according to the PWM frequency and the PWM duty cycle, wherein the test output energy comprises the energy input into the system and the recovered energy. The test start control unit is configured to trigger the test start instruction according to the test output energy.

[0056] Optionally, the output energy calculation unit comprises: The energy acquisition unit is configured to acquire the motor output efficiency of the motor under test and the generator output efficiency of the generator under test. The energy calculation unit is configured to calculate the recovered energy according to the energy input into the system, the motor output efficiency and the generator output efficiency.

[0057] Optionally, the energy calculation unit comprises: The energy calculation sub-unit is configured to input the energy input into the system, the motor output efficiency and the generator output efficiency into the following formula to calculate the recovered energy: E c = E in × η M × η G , wherein E is the recovered energy, E is the energy input into the system, η is the motor output efficiency, and η is the generator output efficiency. c in M G

[0058] ​​​​The specific definition of the energy recovery type direct current motor aging test device can refer to the definition of the aging test method in the energy recovery type direct current motor aging test device in the foregoing, and will not be described here. Each module in the energy recovery type direct current motor aging test device can be realized by software, hardware and a combination thereof in whole or in part. The above-mentioned modules can be embedded in or independent of the processor in the computer device in hardware form, or can be stored in the memory in the computer device in software form, so as to call and execute the operations corresponding to the above-mentioned modules by the processor.

[0059] In one embodiment, a computer device, which can be a server, is provided, and an internal structure diagram of the computer device can be as shown in Figure 6 The computer device includes a processor, a memory, a network interface and a database connected by a system bus. The processor of the computer device is used to provide computing and control capabilities. The memory of the computer device includes a non-volatile storage medium and an internal memory. The non-volatile storage medium stores an operating system, a computer program and a database. The internal memory provides an environment for the operation of the operating system and the computer program in the non-volatile storage medium. The network interface of the computer device is used to communicate with an external terminal through a network connection. The computer program is executed by the processor to implement an aging test method in an energy recovery type direct current motor aging test device.

[0060] In one embodiment, a computer device is provided, including a memory, a processor and a computer program stored in the memory and executable on the processor, and the processor implements the following steps when executing the computer program: obtaining user-set parameters, wherein the user-set parameters include motor power, voltage, current, speed and torque parameters; obtaining system parameters, wherein the system parameters include power supply voltage configuration parameters, PWM frequency parameters, switch parameters, temperature sensor parameters and voltage and current sensor parameters; setting PWM frequency and PWM duty cycle according to the user-set parameters and the system parameters, and triggering a test start instruction according to the PWM frequency and the PWM duty cycle; obtaining an aging test result corresponding to the test start instruction, wherein the current of the to-be-tested motor flows through a loop composed of an external to-be-tested motor, a switch, a current detection resistor and a power supply, and the current of the to-be-tested generator flows through a loop composed of a power supply, an external to-be-tested motor, a switch, a current detection resistor and a to-be-tested generator.

[0061] In one embodiment, a computer readable storage medium is provided, and a computer program is stored on the computer readable storage medium, and the computer program is executed by a processor to implement the following steps: obtaining user setting parameters, wherein the user setting parameters include motor power, voltage, current, rotating speed and torque parameters; obtaining system parameters, wherein the system parameters include power supply voltage configuration parameters, PWM frequency parameters, switch parameters, temperature sensor parameters and voltage and current sensor parameters; setting PWM frequency and PWM duty cycle according to the user setting parameters and the system parameters, and triggering a test start instruction according to the PWM frequency and the PWM duty cycle; obtaining an aging test result corresponding to the test start instruction, wherein the current of the to-be-tested motor flows through a loop composed of an external to-be-tested motor, a switch, a current detection resistor and a power supply, and the current of the to-be-tested generator flows through a loop composed of the power supply, the external to-be-tested motor, the switch, the current detection resistor and the to-be-tested generator.

[0062] Those skilled in the art can understand that all or part of the processes in the above-mentioned embodiments can be completed by a computer program instructing related hardware, and the computer program can be stored in a non-volatile computer readable storage medium. When the computer program is executed, the processes of the above-mentioned embodiments can be included. Any reference to memory, storage, database or other medium used in the embodiments provided in the present application can include non-volatile and / or volatile memory. Non-volatile memory can include read-only memory (ROM), programmable ROM (PROM), electrically programmable ROM (EPROM), electrically erasable programmable ROM (EEPROM) or flash memory. Volatile memory can include random access memory (RAM) or external cache memory. As an illustration but not limitation, RAM is available in various forms, such as static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double data rate SDRAM (DDR SDRAM), enhanced SDRAM (ESDRAM), synchronous link (Synchlink) DRAM (SLDRAM), memory bus (Rambus) direct RAM (RDRAM), direct memory bus dynamic RAM (DRDRAM) and memory bus dynamic RAM (RDRAM) and the like.

[0063] Those skilled in the art can clearly understand that, for the convenience and brevity of description, only the division of the above-mentioned functional units and modules is exemplified, and in actual application, the above-mentioned functions can be completed by different functional units and modules according to needs, that is, the internal structure of the device is divided into different functional units or modules to complete all or part of the functions described above.

[0064] The above-described embodiments are only used to illustrate the technical solutions of the present application, but not limit them; although the present application is described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement to part of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application, and should be included in the protection scope of the present application.

Claims

1. An energy recovery type DC motor aging test equipment, characterized in that: The invention comprises a power supply, a switch, a central control unit and a current-sense resistor; the switch is electrically connected to the current-sense resistor and the central control unit; the other end of the current-sense resistor is grounded; the central control unit is electrically connected to the power supply; the power supply is electrically connected to an external motor to be tested, the other end of which is electrically connected to the switch; the external motor to be tested is connected to a generator to be tested via a transmission mechanism; the generator to be tested is electrically connected to the power supply, the other end of which is grounded; the transmission mechanism is electrically connected to the central control unit; The energy recovery type DC motor aging test equipment includes a corresponding aging test method, including: Obtaining user-set parameters, wherein the user-set parameters include motor power, voltage, current, speed, and torque parameters; Acquiring system parameters, wherein the system parameters include power supply voltage configuration parameters, PWM frequency parameters, switch parameters, temperature sensor parameters, and voltage and current sensor parameters; Setting the PWM frequency and the PWM duty cycle according to the user-set parameters and the system parameters, and triggering a test start instruction according to the PWM frequency and the PWM duty cycle; Obtain an aging test result corresponding to the test start instruction, wherein the current of the motor to be tested flows through a loop consisting of the external motor to be tested, the switch, the current-sensing resistor, and the power supply, and the current of the generator to be tested flows through a loop consisting of the power supply, the external motor to be tested, the switch, the current-sensing resistor, and the generator to be tested.

2. The energy recovery type DC motor aging test equipment according to claim 1 is characterized in that: The step of setting the PWM frequency and the PWM duty cycle according to the user-set parameters and the system parameters, and triggering a test start instruction, specifically includes: Comparing the user-set parameters with the system parameters to obtain a comparison result; When the comparison result is a passed comparison, the PWM frequency and the PWM duty cycle are set according to the user-set parameters and the system parameters, and a test start instruction is triggered according to the PWM frequency and the PWM duty cycle.

3. The energy recovery type DC motor aging test equipment according to claim 1 or 2, characterized in that: The triggering of a test start instruction according to the PWM frequency and the PWM duty cycle specifically includes: Calculating a test output energy according to the PWM frequency and the PWM duty cycle, wherein the test output energy includes energy input to the system and recovered energy; The test start instruction is triggered according to the test output energy.

4. The energy recovery type DC motor aging test equipment according to claim 3 is characterized in that: Calculating the recovered energy includes: Obtaining the motor output efficiency of the motor to be tested and the power generation output efficiency of the generator to be tested; The recovered energy is calculated based on the energy of the input system, the motor output efficiency, and the power generation output efficiency.

5. The energy recovery type DC motor aging test equipment according to claim 4 is characterized in that: The step of calculating the recovered energy based on the energy of the input system, the motor output efficiency, and the power generation output efficiency specifically includes: The energy input to the system, the motor output efficiency, and the power generation output efficiency are input into the following formula to calculate the recovered energy: E c = E in × η M × η G , where E c is the recovered energy, E in is the energy input to the system, η M is the motor output efficiency, η G is the power generation output efficiency.

6. An energy recovery type DC motor aging test device, characterized in that: The invention comprises a power supply, a switch, a central control unit and a current-sense resistor; the switch is electrically connected to the current-sense resistor and the central control unit; the other end of the current-sense resistor is grounded; the central control unit is electrically connected to the power supply; the power supply is electrically connected to an external motor to be tested, the other end of which is electrically connected to the switch; the external motor to be tested is connected to a generator to be tested via a transmission mechanism; the generator to be tested is electrically connected to the power supply, the other end of which is grounded; the transmission mechanism is electrically connected to the central control unit; The energy recovery type DC motor aging test device comprises: A first parameter acquisition module is used to acquire user-set parameters, wherein the user-set parameters include motor power, voltage, current, speed and torque parameters; a second parameter acquisition module, configured to acquire system parameters, wherein the system parameters include power supply voltage configuration parameters, PWM frequency parameters, switch parameters, temperature sensor parameters, and voltage and current sensor parameters; a test start control module, configured to set the PWM frequency and the PWM duty cycle according to the user-set parameters and the system parameters, and trigger a test start instruction according to the PWM frequency and the PWM duty cycle; A test result recording module is used to obtain the aging test result corresponding to the test start instruction, wherein the current of the motor to be tested flows through a loop consisting of the external motor to be tested, the switch, the current-sensing resistor and the power supply, and the current of the generator to be tested flows through a loop consisting of the power supply, the external motor to be tested, the switch, the current-sensing resistor and the generator to be tested.

7. The energy recovery type DC motor aging test device according to claim 6, characterized in that: The test start control module includes: A data comparison submodule is used to compare the user-set parameters with the system parameters to obtain a comparison result; The test start control submodule is used to set the PWM frequency and PWM duty cycle according to the user-set parameters and the system parameters when the comparison result is a passed comparison, and trigger a test start instruction according to the PWM frequency and the PWM duty cycle.

8. The energy recovery type DC motor aging test device according to claim 6 or 7, characterized in that: The test start control module or the test start control submodule includes: an output energy calculation unit, configured to calculate a test output energy according to the PWM frequency and the PWM duty cycle, wherein the test output energy includes energy input to the system and recovered energy; A test start control unit is used to trigger the test start instruction according to the test output energy.

9. A computer device comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein: When the processor executes the computer program, the steps of the aging test method in the energy recovery type DC motor aging test device according to any one of claims 1 to 5 are implemented.

10. A computer-readable storage medium storing a computer program, characterized in that: When the computer program is executed by a processor, the steps of the aging test method in the energy recovery type DC motor aging test device according to any one of claims 1 to 5 are implemented.

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