Electric drive device test system and control method thereof

Abstract

The invention relates to an electric drive device test system and a control method thereof. The electric drive device test system comprises an electric drive device, a detection device and a power supply device. An output shaft of the detection device is connected with an output shaft of the electric drive device. The power supply device is connected with the electric drive device. And the controller is electrically connected with the electric drive device, the detection device and the power supply device, and the controller is used for controlling the detection device to be powered off when the electric drive device test system performs the electric drive detection test and the electric drive device and / or the detection device have faults. The device is used for detecting the working performance of the electric drive device.

Description

Technical Field

[0001] The present invention relates to the technical field of vehicle equipment detection, and in particular to an electric drive device testing system and a control method thereof. Background Art

[0002] The electric drive system is an important component of the vehicle. During the development process of the electric drive system, it is necessary to test the electric drive system with test equipment to determine its reliability. However, if the test equipment or the electric drive system fails during the test and cannot be shut down in time, it will cause damage to the test equipment and the electric drive system.

[0003] The prior art CN115328073A discloses an electric drive system detection and protection system, an electric drive system detection and protection method, and a processor. The system detects the vibration of a measured object through a vibration sensor and sends the measured data to a controller. When the vibration of the measured object is abnormal, the first relay and the second relay are controlled to be disconnected, and the test of the measured object is stopped. The above scheme can only continue to detect faults of the electric drive system through the vibration sensor. The detection method is single and cannot effectively protect the electric drive system according to different fault types. Summary of the Invention

[0004] This application provides an electric drive device test system and control method thereof to solve the problem of being unable to effectively protect the electric drive system. The technical solution adopted by the present invention is as follows:

[0005] According to a first aspect of the present application, an electric drive device testing system is provided, comprising an electric drive device, a detection device, and a power supply device. The output shaft of the detection device is connected to the output shaft of the electric drive device. The power supply device is connected to the electric drive device. A controller is electrically connected to the electric drive device, the detection device, and the power supply device. The controller is configured to control power to the detection device to be disconnected when the electric drive device and / or the detection device malfunction during an electric drive detection test performed by the electric drive device testing system.

[0006] Through the above-mentioned arrangement, when the detection device and the electric drive device fail, the electric drive device test system will not pose a threat to the staff, and the power supply device is normal, and the electric drive device will not be affected by the power supply device and continuously apply torque to the output shaft of the electric drive device. Therefore, the detection device can be powered off so that the output shaft of the detection device and the output shaft of the electric drive device stop naturally. Compared with directly controlling the electric drive device and the detection device to stop suddenly (that is, controlling the output shaft of the electric drive device and the output shaft of the detection device to stop immediately), the internal structure of the electric drive device and the detection device can be prevented from being impacted, thereby avoiding damage to the internal structure of the electric drive device and the detection device, thereby protecting the electric drive device and the detection device.

[0007] In one possible embodiment, the electric drive device test system further includes a first sensor, a timer, and an emergency stop device. The first sensor is used to detect the rotational speed of the output shaft of the electric drive device. The timer is used to detect the duration for which the output shaft of the detection device rotates after the detection device is powered off. The emergency stop device is used to limit the rotation of the output shaft of the electric drive device and the output shaft of the detection device. The controller is electrically connected to the first sensor, the emergency stop device, and the timer; the controller is used to control the emergency stop device to limit the rotation of the output shaft of the electric drive device and the output shaft of the detection device when the detection device is powered off, the output shaft of the detection device rotates for a certain period of time, and the rotational speed of the output shaft of the electric drive device is greater than zero.

[0008] Through the above-mentioned setting, after the detection device is controlled to be powered off and the output shaft of the detection device rotates for a certain period of time, if the speed of the output shaft of the electric drive device is greater than zero at this time, it means that the output shaft of the detection device and the output shaft of the electric drive device cannot stop naturally, that is, there is a fault in the detection device and the electric drive device, which causes the output shaft of the detection device and the output shaft of the electric drive device to be unable to stop, so it is necessary to control the electric drive device and the detection device to stop urgently to avoid the detection device and the drive device from continuing to rotate, thereby protecting the electric drive device test system. In this way, by detecting the speed of the output shaft of the electric drive device, it is possible to further avoid damage to the electric drive device test system caused by the continuous rotation of the detection device and the drive device, thereby further protecting the electric drive device test system.

[0009] In one possible embodiment, the electric drive device test system further includes an access control system electrically connected to the controller, the access control system comprising a cabin and a door. The cabin defines a test space. The door is connected to the cabin and configured to open or close the test space. The controller is further configured to control an emergency stop device to restrict rotation of the output shaft of the electric drive device and the output shaft of the detection device when the electric drive device test system is conducting an electric drive detection test and the door opens the test space.

[0010] With the above arrangement, when the door opens the test space, it indicates that a worker may enter the test space, and the detection device or the electric drive device may pose a threat to the safety of the workers in the test space.

[0011] In this way, when the door opens the test space, the controller will control the emergency stop device to limit the rotation of the output shaft of the electric drive device and the output shaft of the detection device, that is, control the electric drive device and the detection device to stop suddenly, and control the power supply device to cut off the power to avoid injury to the staff and ensure the safety of the staff. In this way, the staff can be protected by judging the status information of the door and the safe operation of the electric drive device test system can be guaranteed.

[0012] In a possible embodiment, the electric drive device test system also includes a second sensor, which is used to detect the rotational speed of the output shaft of the detection device. The controller is electrically connected to the second sensor, and is used to control the detection device to be powered off when the rotational speed of the output shaft of the detection device is not equal to the rotational speed of the output shaft of the electric drive device. Through the above arrangement, the controller can control the detection device to be powered off, so that the output shaft of the detection device and the output shaft of the electric drive device naturally stop rotating, thereby protecting the electric drive device and the detection device. In this way, by detecting the rotational speed of the output shaft of the detection device and the rotational speed of the output shaft of the electric drive device, it is possible to determine whether the electric drive device and the detection device have failed, and then control the electric drive device test system to make corresponding adjustments through the controller to ensure the safe operation of the electric drive device test system.

[0013] In one possible embodiment, the electric drive device test system further includes a stalling device and a third sensor. The stalling device is capable of limiting rotation of the output shaft of the electric drive device. The third sensor is configured to detect operating status information of the stalling device. Both the stalling device and the third sensor are electrically connected to a controller. The controller is further configured to control the electric drive device test system to perform an electric drive detection test when the power supply device is not faulty and the stalling device is not limiting rotation of the output shaft of the electric drive device.

[0014] Through the above setting, before conducting the electric drive detection test, the controller will also obtain the working status information of the blocking device through the third sensor, so as to prevent the blocking device from restricting the rotation of the output shaft of the electric drive device and affecting the progress of the electric drive detection test. This can ensure the normal operation of the electric drive device test system and avoid damage to the blocking device and the electric drive device when the detection device drives the output shaft of the electric drive device to rotate.

[0015] In a possible implementation, the controller is further configured to control the electric drive device test system to perform a stall detection test when the stall device restricts rotation of the output shaft of the electric drive device and a stall detection test is required.

[0016] Through the above settings, the controller can ensure that the electric drive device test system switches normally between the two test modes of electric drive detection test and stall detection test, avoiding the normal operation of the electric drive device test system or damage to the electric drive device test system due to the wrong working state of the stall device, thereby ensuring that the electric drive device test system can normally perform the electric drive detection test or stall detection test, and ensuring the normal operation of the electric drive device test system.

[0017] In one possible embodiment, the third sensor includes a distance sensor; the locking device includes a latch, and the output shaft of the electric drive device is provided with a slot; the distance sensor is configured to detect the distance the latch is inserted into the slot. When the latch is inserted into the slot, the locking device restricts rotation of the output shaft of the electric drive device.

[0018] Through the above setting, the distance sensor can detect the distance that the pin extends into the slot to determine whether the blocking device can limit the rotation of the output shaft of the electric drive device, thereby facilitating the controller to obtain the working status information of the blocking device through the third sensor.

[0019] In one possible embodiment, the controller is also used to control the emergency stop device to limit the rotation of the output shaft of the electric drive device and the output shaft of the detection device when the electric drive device test system performs an electric drive detection test and the electric drive device and / or the detection device fail and the door body opens the test space.

[0020] Through the above settings, the controller will give priority to adjusting the electric drive device, detection device, etc. when the door opens the test space, thereby prioritizing the safety of the staff, avoiding continuous rotation of the detection device and drive device, and protecting the electric drive device test system to further improve the safety of the electric drive device test system.

[0021] According to a second aspect of the present application, a control method is provided, which is applied to the above-mentioned electric drive device test system. The control method includes:

[0022] When the electric drive device test system performs an electric drive detection test, if a fault signal is received, the type of the fault signal is determined.

[0023] If the fault signal indicates a fault in the electric drive device and / or the detection device, the detection device is controlled to be powered off.

[0024] Through the above settings, the electric drive device test system can be adjusted accordingly according to different types of fault signals. Compared with directly controlling the electric drive device and the detection device to stop suddenly when a fault occurs, this can avoid damage to the internal structure of the electric drive device and the detection device, thereby further protecting the electric drive device and the detection device.

[0025] In a possible implementation, after controlling the detection device to be turned off, the control method further includes:

[0026] The rotational speed of the output shaft of the electric drive device is obtained after a preset time period, and it is determined whether the rotational speed of the output shaft of the electric drive device is equal to zero.

[0027] If the rotation speed of the output shaft of the electric drive device is greater than zero, the output shaft of the electric drive device and the output shaft of the detection device are restricted from rotating.

[0028] With the above arrangement, by detecting the rotational speed of the output shaft of the electric drive device, it is possible to further prevent the electric drive device test system from being damaged by continuous rotation of the detection device and the drive device, thereby further protecting the electric drive device test system.

[0029] Therefore, the above technical features of this application have the following beneficial effects:

[0030] (1) The present application, through the setting of the electric drive device test system, can cut off the power of the detection device when a fault occurs in the detection device and the electric drive device, so that the output shaft of the detection device and the output shaft of the electric drive device stop naturally. Compared with directly controlling the electric drive device and the detection device to stop suddenly (that is, controlling the output shaft of the electric drive device and the output shaft of the detection device to stop immediately), the internal structure of the electric drive device and the detection device can be prevented from being impacted, thereby avoiding damage to the internal structure of the electric drive device and the detection device, thereby protecting the electric drive device and the detection device.

[0031] (2) By detecting the rotational speed of the output shaft of the electric drive device, the present application can further prevent the continuous rotation of the detection device and the drive device from causing damage to the electric drive device test system, thereby further protecting the electric drive device test system.

[0032] (3) Through the setting of the access control system, this application can determine whether there is a personnel protection fault by judging the status information of the door body, thereby ensuring the safe operation of the electric drive device test system.

[0033] (4) The present application detects the rotational speed of the output shaft of the detection device and the rotational speed of the output shaft of the electric drive device, thereby obtaining the fault signals of the electric drive device and the detection device, and then controls the electric drive device test system through the controller to make corresponding adjustments to ensure the safe operation of the electric drive device test system.

[0034] (5) The present application can ensure the normal operation of the electric drive device test system through the setting of the controller, and avoid damage to the blocking device and the electric drive device when the detection device drives the output shaft of the electric drive device to rotate.

[0035] (6) The present application can ensure that the electric drive device test system switches normally between the two test modes of the electric drive detection test and the stall detection test through the setting of the controller, thereby avoiding affecting the normal operation of the electric drive device test system or damaging the electric drive device test system due to the wrong working state of the stall device, thereby ensuring the normal operation of the electric drive device test system.

[0036] (7) This application can prioritize the safety of staff through the setting of the controller, thereby further improving the safety of the electric drive device test system.

[0037] (8) Through the provision of a third sensor and a locking device, the present application can determine whether the locking device can limit the rotation of the output shaft of the electric drive device by detecting the distance the pin extends into the slot through the distance sensor, thereby facilitating the controller to obtain the working status information of the locking device through the third sensor. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] The drawings herein are incorporated into and constitute a part of the specification, illustrate embodiments consistent with the present application, and together with the specification are used to explain the principles of the present application, and do not constitute an improper limitation on the present application.

[0039] Figure 1 This is a schematic diagram of the connection relationship of the electric drive device test system;

[0040] Figure 2 This is one of the flow charts of the control method of the electric drive device test system;

[0041] Figure 3 This is the second flow chart of the control method of the electric drive device test system;

[0042] Figure 4 This is the third flow chart of the control method of the electric drive device test system;

[0043] Figure 5 This is the fourth flow chart of the control method of the electric drive device test system;

[0044] Figure 6 This is the fifth flow chart of the control method of the electric drive device test system;

[0045] Figure 7 This is the sixth flow chart of the control method of the electric drive device test system;

[0046] Figure 8 This is the seventh flow chart of the control method of the electric drive device test system.

[0047] Among them, 10. Electric drive device test system; 2. Electric drive device; 3. Detection device; 4. Power supply device; 5. Control console; 6. Access control system; 61. Cabin; 62. Door body; 63. Monitoring device; 7. Collection device; 8. Cooling device; 9. Stalling device. DETAILED DESCRIPTION

[0048] In order to enable ordinary people in the art to better understand the technical solutions of the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings.

[0049] It should be noted that the terms "first," "second," and the like in the specification and claims of this application and the accompanying drawings are used to distinguish similar objects and are not necessarily used to describe a specific order or precedence. It should be understood that the terms used in this manner are interchangeable where appropriate so that the embodiments of the application described herein can be implemented in an order other than those illustrated or described herein. The implementations described in the following exemplary embodiments do not represent all implementations consistent with the present application. Instead, they are merely examples of apparatus and methods consistent with certain aspects of the present application, as detailed in the appended claims.

[0050] The electric drive system is an important component of the vehicle. During the development process of the electric drive system, it is necessary to test the electric drive system with test equipment to determine its reliability. However, if the test equipment or the electric drive system fails during the test and cannot be shut down in time, it will cause damage to the test equipment and the electric drive system.

[0051] Based on this, the present application provides an electric drive device testing system 10, such as Figure 1 As shown, the electric drive device test system 10 includes an electric drive device 2, a detection device 3, and a power supply device 4. The output shaft of the detection device 3 is connected to the output shaft of the electric drive device 2. The power supply device 4 is electrically connected to the electric drive device 2. The electric drive device test system 10 is capable of performing electric drive detection tests.

[0052] Through the above-mentioned arrangement, when it is necessary to test the working performance of the electric drive device 2, an electric drive detection test can be performed through the electric drive device test system 10. Specifically, the detection device 3 can be started so that the detection device 3 drives the output shaft of the detection device 3 to rotate, thereby driving the output shaft of the electric drive device 2 to rotate. During the rotation of the electric drive device 2, electric energy is transmitted to the electric drive device 2 through the power supply device 4, so that the electric drive device 2 outputs a torque opposite to the rotation direction of the output shaft of the electric drive device 2, and then the detection device 3 drives the speed of the output shaft of the detection device 3 to determine whether the working performance of the electric drive device 2 is qualified.

[0053] For example, the detection device 3 can drive the output shaft of the detection device 3 and the output shaft of the electric drive device 2 to rotate at a speed of 100 revolutions per minute. The torque output by the electric drive device 2 can theoretically reduce the rotational speed of the output shaft of the detection device 3 and the output shaft of the electric drive device 2 to 90 revolutions per minute. If the actual rotational speed of the output shaft of the detection device 3 is 90 revolutions per minute, it means that the working performance of the output shaft of the detection device 3 is qualified. If the actual rotational speed of the output shaft of the detection device 3 is greater than 90 revolutions per minute, for example, 94 revolutions per minute, 96 revolutions per minute, etc., it means that the working performance of the electric drive device 2 is unqualified.

[0054] It should be noted that after the electric drive device 2 outputs torque, there may be a certain error between the actual speed of the output shaft of the detection device 3 and the theoretical speed of the detection device 3. Therefore, within the allowable error range, although the actual speed of the output shaft of the detection device 3 is greater than the theoretical speed of the detection device 3, the working performance of the electric drive device 2 can still be considered qualified.

[0055] Specifically, the detection device 3 includes a dynamometer.

[0056] In some examples, the electric drive device 2 has two output shafts, and two corresponding dynamometers are also provided.

[0057] On this basis, in some embodiments, the electric drive device test system 10 also includes a controller, which is electrically connected to the electric drive device 2, the detection device 3 and the power supply device 4. The controller is used to control the detection device 3 to cut off power when the electric drive device test system 10 performs an electric drive detection test and the electric drive device 2 and / or the detection device 3 fails.

[0058] Through the above-mentioned settings, when the detection device 3 and the electric drive device 2 fail, the electric drive device testing system 10 will not pose a threat to the staff, and the power supply device 4 is normal. The electric drive device 2 will not be affected by the power supply device 4 and will not continue to apply torque to the output shaft of the electric drive device 2. Therefore, the detection device 3 can be powered off to make the output shaft of the detection device 3 and the output shaft of the electric drive device 2 stop naturally. Compared with directly controlling the electric drive device 2 and the detection device 3 to stop suddenly (that is, controlling the output shaft of the electric drive device 2 and the output shaft of the detection device 3 to stop immediately), the internal structure of the electric drive device 2 and the detection device 3 can be prevented from being impacted, thereby avoiding damage to the internal structure of the electric drive device 2 and the detection device 3, thereby protecting the electric drive device 2 and the detection device 3.

[0059] In some examples, such as Figure 1 As shown, the electric drive device testing system 10 further includes a console 5 , and the controller is disposed on the console 5 .

[0060] In some examples, when the power supply device 4 fails, the electric drive device 2 may be affected by the power supply device 4 and continuously output torque to the output shaft of the electric drive device 2, causing the electric drive device 2 and the detection device 3 to fail to stop normally.

[0061] When the power supply device 4 fails, the controller will control the detection device 3 and the electric drive device 2 to stop suddenly to prevent the detection device 3 and the drive device from continuing to rotate, thereby timely protecting the staff and the electric drive device test system 10 to avoid injury to the staff or damage to the electric drive device test system 10.

[0062] On this basis, in some embodiments, the electric drive device testing system 10 further includes a first sensor, which is used to detect the rotational speed of the output shaft of the electric drive device 2 .

[0063] The electric drive device testing system 10 also includes a timer and an emergency stop device. The timer is used to detect the duration of rotation of the output shaft of the detection device 3 after the detection device 3 is powered off. The emergency stop device is used to limit the rotation of the output shafts of the electric drive device 2 and the output shafts of the detection device 3 (i.e., control the electric drive device 2 and the detection device 3 to stop suddenly so that the output shafts of the electric drive device 2 and the output shafts of the detection device 3 stop rotating immediately).

[0064] The controller is electrically connected to the first sensor, the emergency stop device, and the timer. The controller is configured to control the emergency stop device to limit the rotation of the output shaft of the electric drive device 2 and the output shaft of the detection device 3 within a preset time period after the detection device 3 is powered off, and if the speed of the output shaft of the electric drive device 2 is still greater than zero.

[0065] For example, the preset duration may be 4S, 5S, 6S, etc., and may be adjusted according to the rotational speed of the output shaft of the electric drive device 2 when the detection device 3 is powered off.

[0066] Exemplarily, the emergency stop device may be a friction plate, which rubs against the output shaft of the electric drive device 2 and the output shaft of the detection device 3 to quickly stop the output shaft of the electric drive device 2 and the output shaft of the detection device 3;

[0067] Exemplarily, the emergency stop device may be an electromagnetic clutch, which generates a magnetic field through a coil in the electromagnetic clutch and uses magnetic force to force the output shaft of the electric drive device 2 and the output shaft of the detection device 3 to stop rotating quickly.

[0068] Through the above setting, after the detection device 3 is controlled to be powered off and the output shaft of the detection device 3 rotates for a certain period of time, if the speed of the output shaft of the electric drive device 2 is greater than zero at this time, it means that the output shaft of the detection device 3 and the output shaft of the electric drive device 2 cannot stop naturally, that is, there is a fault in the detection device 3 and the electric drive device 2, which causes the output shaft of the detection device 3 and the output shaft of the electric drive device 2 to be unable to stop. Therefore, it is necessary to control the electric drive device 2 and the detection device 3 to stop urgently to avoid continuous rotation of the detection device 3 and the drive device, thereby protecting the electric drive device test system 10.

[0069] In this way, by detecting the rotational speed of the output shaft of the electric drive device 2 , it is possible to further prevent the detection device 3 and the drive device from continuously rotating to cause damage to the electric drive device test system 10 , thereby further protecting the electric drive device test system 10 .

[0070] It should be noted that after the control detection device 3 is powered off and the output shaft of the detection device 3 rotates for a certain period of time, if the speed of the output shaft of the electric drive device 2 is equal to zero at this time, it means that the output shaft of the detection device 3 and the output shaft of the electric drive device 2 have naturally stopped, and the power supply device 4 can be powered off to repair the electric drive device test system 10.

[0071] In some embodiments, as Figure 1 As shown, the electric drive device test system 10 also includes an access control system 6, which is electrically connected to the controller and includes a cabin 61 and a door 62. The cabin 61 forms a test space. The door 62 is connected to the cabin 61 and is used to open or close the test space.

[0072] The controller is also used to control the emergency stop device to limit the rotation of the output shaft of the electric drive device 2 and the output shaft of the detection device 3 when the electric drive device test system 10 performs an electric drive detection test and the door body 62 opens the test space.

[0073] It can be understood that the electric drive device 2 , the detection device 3 , the power supply device 4 and the like are all arranged in the test space.

[0074] It can be understood that the number of door bodies 62 can be one or more. During the operation of the electric drive device test system 10, when any of the multiple door bodies 62 opens the test space, the controller will control the emergency stop device to limit the rotation of the output shaft of the electric drive device 2 and the output shaft of the detection device 3.

[0075] Through the above arrangement, when the door 62 opens the test space, it indicates that a worker may enter the test space, and the detection device 3 or the electric drive device 2 may pose a threat to the safety of the workers in the test space.

[0076] In this way, when the door body 62 opens the test space, the controller will control the emergency stop device to limit the rotation of the output shaft of the electric drive device 2 and the output shaft of the detection device 3, that is, control the electric drive device 2 and the detection device 3 to stop suddenly, and control the power supply device 4 to cut off the power to avoid injury to the staff and ensure the safety of the staff. In this way, the staff can be protected by judging the status information of the door body 62 to ensure the safe operation of the electric drive device test system 10.

[0077] In some examples, such as Figure 1 As shown, the console 5 is arranged outside the cabin 61.

[0078] Based on the above, in some examples, such as Figure 1 As shown, the access control system 6 further includes a monitoring device 63 , which is disposed in the test space and is used to monitor whether there are any staff members in the test space.

[0079] The monitoring device 63 is electrically connected to the controller, and the controller is used to control the emergency stop device to limit the rotation of the output shaft of the electric drive device 2 and the output shaft of the detection device 3 when there are workers in the test space.

[0080] Through the above settings, when there are workers in the test space, the controller will control the electric drive device 2 and the detection device 3 to stop suddenly, and control the power supply device 4 to cut off the power, thereby ensuring the safety of the workers in the test space.

[0081] The provision of the access control system 6 can ensure the safety of the staff, and prevent the staff from entering the test space or staying in the test space and being harmed by the running electric drive device test system 10 .

[0082] In some embodiments, the electric drive device testing system 10 further includes a second sensor, which is used to detect the rotational speed of the output shaft of the detection device 3 .

[0083] The controller is electrically connected to the second sensor, and is used to control the detection device 3 to be powered off when the rotational speed of the output shaft of the detection device 3 is not equal to the rotational speed of the output shaft of the electric drive device 2 .

[0084] Through the above-mentioned setting, since the output shaft of the detection device 3 is connected to the output shaft of the electric drive device 2 when the electric drive device test system 10 performs the electric drive detection test, when the rotational speed of the output shaft of the detection device 3 is not equal to the rotational speed of the output shaft of the electric drive device 2, it indicates that there is a fault in the connection between the output shaft of the detection device 3 and the output shaft of the electric drive device 2, and the detection device 3 and the electric drive device 2 need to be repaired.

[0085] In this way, the controller will control the detection device 3 to cut off the power, so that the output shaft of the detection device 3 and the output shaft of the electric drive device 2 will stop naturally, protecting the electric drive device 2 and the detection device 3. In this way, the rotational speed of the output shaft of the detection device 3 and the rotational speed of the output shaft of the electric drive device 2 can be detected to determine whether the electric drive device 2 and the detection device 3 have faults, and then the controller controls the electric drive device test system 10 to make corresponding adjustments to ensure the safe operation of the electric drive device test system 10.

[0086] In some examples, whether the detection device 3 is faulty can be determined by judging the difference between the actual speed or torque of the output shaft of the detection device 3 and the target speed or torque of the output shaft of the detection device 3. If the difference between the actual speed or torque of the output shaft of the detection device 3 and the target speed or torque of the output shaft of the detection device 3 is too large or too small, it means that the detection device 3 is faulty.

[0087] In some examples, the electric drive device 2 can feed back the rotational speed of the output shaft of the electric drive device 2 to the controller. Whether the electric drive device 2 has failed can be determined by judging the difference between the actual rotational speed of the output shaft of the electric drive device 2 and the rotational speed fed back to the controller by the electric drive device 2. If the difference between the actual rotational speed of the output shaft of the electric drive device 2 and the rotational speed fed back to the controller by the electric drive device 2 is too large or too small, it indicates that the electric drive device 2 has failed.

[0088] In some examples, such as Figure 1 As shown, the electric drive device test system 10 further includes a collection device 7, which is electrically connected to the electric drive device 2 and to the controller. The collection device 7 is used to collect information on the electric drive device 2 and determine whether the electric drive device 2 has a fault. If a fault occurs in the electric drive device 2, the collection device 7 sends a fault signal to the controller so that the controller receives the fault signal.

[0089] Specifically, it is possible to determine whether the electric drive device 2 has a fault by collecting the CAN signal, vibration amplitude, temperature, etc. of the electric drive device 2, so as to send a fault signal to the controller when the electric drive device 2 has a fault.

[0090] In some examples, such as Figure 1 As shown, the electric drive device test system 10 also includes a cooling device 8, which is connected to the electric drive device 2 and electrically connected to the controller, and is used to drive the coolant to circulate between the cooling device 8 and the electric drive device 2 to absorb the heat in the electric drive device 2 and cool the electric drive, thereby ensuring the normal function of the electric drive device 2.

[0091] When the electric drive device test system 10 performs an electric drive detection test, the temperature of the coolant at multiple locations of the cooling device 8 and the electric drive device 2 can be detected, such as the liquid inlet and liquid outlet of the electric drive device 2, the liquid inlet and liquid outlet of the cooling device 8, etc. If the difference between the actual temperature of the coolant and the target temperature is too large or too small, it means that the cooling device 8 has failed, and the cooling device 8 will send a fault signal to the controller. At this time, the controller will also control the detection device 3 to cut off the power.

[0092] On this basis, in some examples, the controller is also used to control the emergency stop device to limit the rotation of the output shaft of the electric drive device 2 and the output shaft of the detection device 3 when the electric drive device test system 10 performs an electric drive detection test and the electric drive device 2 and / or the detection device 3 fail and the door body 62 opens the test space.

[0093] Through the above setting, when the door body 62 first opens the test space and the controller controls the electric drive device 2 and the detection device 3 to stop suddenly, if the electric drive device 2 and / or the detection device 3 fails, the controller will continue to control the electric drive device 2 and the detection device 3 to stop suddenly, and control the power supply device 4 to cut off the power.

[0094] When the electric drive device 2 and / or the detection device 3 fails and the controller controls the detection device 3 to be powered off, if the door 62 opens the test space, the controller will control the electric drive device 2 and the detection device 3 to stop suddenly.

[0095] In this way, the controller will give priority to adjusting the electric drive device 2, the detection device 3, etc. when the door body 62 opens the test space, thereby giving priority to ensuring the safety of the staff, and avoiding the continuous rotation of the detection device 3 and the drive device, protecting the electric drive device test system 10, and further improving the safety of the electric drive device test system 10.

[0096] Based on the above, in some examples, the controller is further configured to control the electric drive device test system to perform an electric drive detection test when the power supply device 4 is not faulty. It is understood that when the electric drive device test system 10 is not operating, the controller will not receive fault signals from the detection device 3, the electric drive device 2, and the power supply device 4.

[0097] Through the above settings, before the electric drive device test system 10 performs the electric drive detection test, the status information of the door body 62 can be detected to determine whether the door body 62 opens the test space. If the door body 62 opens the test space, it means that performing the electric drive detection test at this time will pose a threat to the safety of the staff. Therefore, the controller will control the electric drive device test system 10 to shut down, thereby avoiding the electric drive device test system 10 from starting up and causing harm to the staff.

[0098] When the door 62 closes the test space, it means that the electric drive detection test can be carried out normally at this time, and the controller will control the detection device 3, the drive device and the power supply device 4 to start, thereby carrying out the electric drive detection test.

[0099] In this way, the staff can be protected by judging whether the door body 62 opens the test space before the electric drive detection test is performed, which can better protect the safety of the staff and improve the safety of the electric drive device test system 10.

[0100] In some embodiments, as Figure 1 As shown, the electric drive device testing system 10 further includes a rotor blocking device 9 , which can limit the rotation of the output shaft of the electric drive device 2 .

[0101] When the blocking device 9 restricts the rotation of the output shaft of the electric drive device 2 , the electric drive device testing system 10 can perform a blocking detection test.

[0102] Specifically, when the blocking device 9 restricts the rotation of the output shaft of the electric drive device 2, the electric drive device 2 cannot drive the output shaft of the electric drive device 2 to rotate. At this time, power can be supplied to the electric drive device 2 through the power supply device 4, so that the electric drive device 2 outputs torque to the output shaft of the electric drive device 2. By comparing the actual torque output by the detected electric drive device 2 with the target torque output by the electric drive device 2, it is determined whether the difference between the actual torque output by the electric drive device 2 and the target torque output by the electric drive device 2 is too large or too small. If the difference between the actual torque output by the electric drive device 2 and the target torque output by the electric drive device 2 is within the normal range, it means that the working performance of the electric drive device 2 is qualified. If the difference between the actual torque output by the electric drive device 2 and the target torque output by the electric drive device 2 is too large or too small, it means that the working performance of the electric drive device 2 is unqualified.

[0103] In some implementations, the electric drive device testing system 10 further includes a third sensor, which is used to detect the working state information of the stalling device 9. The stalling device 9 and the third sensor are both electrically connected to the controller.

[0104] The controller is also used to control the electric drive device test system 10 to perform an electric drive detection test when the power supply device 2 has no faults and the blocking device 9 does not restrict the rotation of the output shaft of the electric drive device 2 .

[0105] Through the above-mentioned setting, before conducting the electric drive detection test, the controller will also obtain the working status information of the blocking device 9 through the third sensor, so as to avoid the blocking device 9 restricting the rotation of the output shaft of the electric drive device 2 and affecting the progress of the electric drive detection test. In this way, the normal operation of the electric drive device test system 10 can be ensured, and the detection device 3 can be prevented from causing damage to the blocking device 9 and the electric drive device 2 when driving the output shaft of the electric drive device 2 to rotate.

[0106] In some embodiments, the third sensor includes a distance sensor. The locking device 9 includes a latch, and the output shaft of the electric drive device 2 is provided with a slot. The distance sensor is configured to detect the distance between the latch and the slot. When the latch is inserted into the slot, the locking device 9 restricts rotation of the output shaft of the electric drive device 2.

[0107] In this way, the distance sensor can detect the distance that the pin extends into the slot to determine whether the blocking device 9 can limit the rotation of the output shaft of the electric drive device 2, thereby facilitating the controller to obtain the working status information of the blocking device 9 through the third sensor.

[0108] In some examples, the electric drive device 2 has two output shafts, and correspondingly, two locking devices 9 are also provided.

[0109] On this basis, in some embodiments, the controller is further used to control the electric drive device test system 10 to perform a stall detection test when the stall device 9 limits the rotation of the output shaft of the electric drive device 2 and a stall detection test is required. Through the above configuration, when the stall device 9 limits the rotation of the output shaft of the electric drive device 2, it can be determined whether the stall device 9 is in the required position based on whether a stall detection test is required. If a stall detection test is required, the stall device 9 has already limited the rotation of the output shaft of the electric drive device 2, and the stall detection test can be performed normally. If a stall detection test is not required, it means that the stall device 9 will affect the normal operation of the electric drive device test system 10, and therefore the electric drive device test system 10 needs to be shut down.

[0110] In this way, the controller can ensure that the electric drive device test system 10 switches normally between the two test modes of the electric drive detection test and the stall detection test, avoiding the normal operation of the electric drive device test system 10 or damage to the electric drive device test system 10 due to the wrong working state of the stall device 9, thereby ensuring that the electric drive device test system 10 can normally perform the electric drive detection test or the stall detection test, and ensuring the normal operation of the electric drive device test system 10.

[0111] This application also provides a control method for the above-mentioned electric drive device test system 10, such as Figure 2 As shown, the control method includes:

[0112] S01: When the electric drive device test system 10 performs an electric drive detection test, if a fault signal is received, S02 is executed: determining the type of the fault signal.

[0113] If the fault signal indicates that the power supply device 4 is faulty, S03 is executed: the output shaft of the electric drive device 2 and the output shaft of the detection device 3 are restricted from rotating.

[0114] If the fault signal indicates that the electric drive device 2 and / or the detection device 3 is faulty, S04 is executed: the detection device 3 is controlled to be powered off.

[0115] Through the above-mentioned setting, the electric drive device test system 10 can make corresponding adjustments according to different types of fault signals. Compared with directly controlling the electric drive device 2 and the detection device 3 to stop suddenly when a fault occurs, this can avoid damage to the internal structure of the electric drive device 2 and the detection device 3, so as to further protect the electric drive device 2 and the detection device 3.

[0116] In some embodiments, as Figure 3 As shown, the control method further includes:

[0117] S05: Obtain the rotational speed of the output shaft of the electric drive device 2 after a preset time period, and execute S06: Determine whether the rotational speed of the output shaft of the electric drive device 2 is equal to zero.

[0118] If the rotation speed of the output shaft of the electric drive device 2 is equal to zero, S07 is executed: the power supply device 4 is controlled to be powered off.

[0119] If the rotation speed of the output shaft of the electric drive device 2 is greater than zero, step S08 is executed: limiting the rotation of the output shaft of the electric drive device 2 and the output shaft of the detection device 3 .

[0120] In this way, by detecting the rotational speed of the output shaft of the electric drive device 2 , it is possible to further prevent the detection device 3 and the drive device from continuously rotating to cause damage to the electric drive device test system 10 , thereby further protecting the electric drive device test system 10 .

[0121] On this basis, in some examples, such as Figure 4 As shown, the control method further includes:

[0122] S09: When the electric drive device test system 10 has not performed the electric drive detection test, determine whether to perform the electric drive detection test.

[0123] If the electric drive detection test is performed, S10 is executed: determining whether the door body 62 opens the test space.

[0124] If the door 62 opens the test space, S11 is executed: the electric drive device test system 10 is controlled to be closed.

[0125] If the door 62 does not open the test space, S12 is executed: the electric drive device test system 10 is controlled to perform an electric drive detection test.

[0126] In this way, the staff can be protected by judging whether the door body 62 opens the test space before the electric drive detection test is performed, which can better protect the safety of the staff and improve the safety of the electric drive device test system 10.

[0127] In some examples, such as Figure 4 As shown, if the electric drive detection test is not performed, S11 is executed: the electric drive device test system 10 is controlled to be turned off.

[0128] Based on the above, in some examples, such as Figure 5 As shown, if the door 62 does not open the test space, controlling the electric drive device test system 10 to perform the electric drive detection test includes:

[0129] If no fault signal of the first type of fault is received, step S13 is executed: determining whether the blocking device 9 restricts the rotation of the output shaft of the electric drive device 2 .

[0130] If the blocking device 9 does not restrict the rotation of the output shaft of the electric drive device 2 , S12 is executed: the electric drive device test system 10 is controlled to perform an electric drive detection test.

[0131] Through the above settings, before conducting the electric drive detection experiment, the controller will also obtain the working status information of the blocking device 9, so as to avoid the blocking device 9 restricting the rotation of the output shaft of the electric drive device 2 and affecting the progress of the electric drive detection experiment. In this way, the normal operation of the electric drive device test system 10 can be ensured, and the detection device 3 can avoid causing damage to the blocking device 9 and the electric drive device 2 when driving the output shaft of the electric drive device 2 to rotate.

[0132] In some examples, such as Figure 5 As shown, if the blocking device 9 restricts the output shaft of the electric drive device 2 from rotating, S11 is executed: the electric drive device test system 10 is controlled to be shut down.

[0133] In some examples, such as Figure 6 As shown, the control method further includes:

[0134] If the blocking device 9 restricts the rotation of the output shaft of the electric drive device 2 , step S14 is executed: determining whether a blocking detection test is required.

[0135] If a stall detection test is required, S15 is executed: the electric drive device test system 10 is controlled to perform a stall detection test.

[0136] If the stall detection test is not required, S11 is executed: the electric drive device test system 10 is controlled to be turned off.

[0137] Through the above settings, the controller can ensure that the electric drive device test system 10 switches normally between the two test modes of electric drive detection test and stall detection test, avoiding the normal operation of the electric drive device test system 10 or damage to the electric drive device test system 10 due to the wrong working state of the stall device 9, thereby ensuring the normal operation of the electric drive device test system 10.

[0138] In some examples, such as Figure 6 As shown, if the electric drive detection test is not performed, S14 is executed: determining whether a stall detection test is required.

[0139] In other examples, it may be determined whether a stall detection test is required first, and then whether the stall device 9 is operating normally. Figure 7 As shown, the control method includes:

[0140] S09: When the electric drive device test system 10 is not running, determine whether to perform an electric drive detection test.

[0141] If the electric drive detection test is performed, S10 is executed: determining whether the door body 62 opens the test space.

[0142] If the door 62 opens the test space, S11 is executed: the electric drive device test system 10 is controlled to be closed.

[0143] If the door body 62 does not open the test space, S13 is executed: determining whether the blocking device 9 restricts the output shaft of the electric drive device 2 from rotating.

[0144] If the blocking device 9 does not restrict the rotation of the output shaft of the electric drive device 2 , S12 is executed: the electric drive device test system 10 is controlled to perform an electric drive detection test.

[0145] If the electric drive detection test is not performed, S14 is executed: determining whether to perform a stall detection test.

[0146] If the stall detection test is performed, S13 is executed: determining whether the stall device 9 restricts the rotation of the output shaft of the electric drive device 2 .

[0147] If the blocking device 9 restricts the rotation of the output shaft of the electric drive device 2 , S15 is executed: the electric drive device test system 10 is controlled to perform a blocking detection test.

[0148] If the stall detection test is not performed, S11 is executed: the electric drive device test system 10 is controlled to be turned off.

[0149] In this way, the controller can also ensure that the electric drive device test system 10 switches normally between the two test modes of the electric drive detection test and the stall detection test, thereby ensuring the normal operation of the electric drive device test system 10.

[0150] In some examples, such as Figure 8 As shown, the control method of the electric drive device test system 10 includes:

[0151] S09: When the electric drive device test system 10 is not running, determine whether to perform an electric drive detection test.

[0152] If the electric drive detection test is performed, S10 is executed: determining whether the door body 62 opens the test space.

[0153] If the door 62 opens the test space, S11 is executed: the electric drive device test system 10 is controlled to be closed.

[0154] If the door body 62 does not open the test space, S13 is executed: determining whether the blocking device 9 restricts the output shaft of the electric drive device 2 from rotating.

[0155] If the blocking device 9 does not restrict the rotation of the output shaft of the electric drive device 2 , S12 is executed: the electric drive device test system 10 is controlled to perform an electric drive detection test.

[0156] Executing S01 : When the electric drive device test system 10 performs an electric drive detection test, if a fault signal is received, executing S02 : determining the type of the fault signal.

[0157] If the fault signal indicates that the power supply device 4 is faulty, S03 is executed: the output shaft of the electric drive device 2 and the output shaft of the detection device 3 are restricted from rotating.

[0158] If the fault signal indicates that the electric drive device 2 and / or the detection device 3 is faulty, S04 is executed: the detection device 3 is controlled to be powered off.

[0159] Execute S05: obtain the rotation speed of the output shaft of the electric drive device 2 after a preset time period, and execute S06: determine whether the rotation speed of the output shaft of the electric drive device 2 is equal to zero.

[0160] If the rotation speed of the output shaft of the electric drive device 2 is equal to zero, S07 is executed: the power supply device 4 is controlled to be powered off.

[0161] If the rotation speed of the output shaft of the electric drive device 2 is greater than zero, step S08 is executed: limiting the rotation of the output shaft of the electric drive device 2 and the output shaft of the detection device 3 .

[0162] If the blocking device 9 restricts the rotation of the output shaft of the electric drive device 2 , step S14 is executed: determining whether a blocking detection test is required.

[0163] If a stall detection test is required, S15 is executed: the electric drive device test system 10 is controlled to perform a stall detection test.

[0164] If the stall detection test is not required, S11 is executed: the electric drive device test system 10 is controlled to be turned off.

[0165] If the electric drive detection test is not performed, S14 is executed: determining whether a stall detection test is required.

[0166] Through the above settings, the controller can ensure that the electric drive device test system 10 switches normally between the two test modes of the electric drive detection test and the stall detection test, and can control the electric drive device test system 10 to make corresponding adjustments according to the fault type when a fault occurs in the electric drive device test system 10 during the electric drive detection test, so as to protect the detection device 3, the electric drive device 2 and the power supply device 4 in the electric drive device test system 10.

[0167] The present application also provides an electronic device, comprising a processor, a memory, and a bus. The processor and the memory may be connected via the bus.

[0168] A processor is the control center of a communication device and can be a single processor or a collection of multiple processing elements. For example, a processor can be a general-purpose central processing unit (CPU) or another general-purpose processor. A general-purpose processor can be a microprocessor or any conventional processor.

[0169] As an embodiment, the processor may include one or more CPUs.

[0170] The memory may be a read-only memory (ROM) or other type of static storage device that can store static information and instructions, a random access memory (RAM) or other type of dynamic storage device that can store information and instructions, an electrically erasable programmable read-only memory (EEPROM), a magnetic disk storage medium or other magnetic storage device, or any other medium that can be used to carry or store desired program code in the form of instructions or data structures and can be accessed by a computer, but is not limited to these.

[0171] As a possible implementation, the memory can exist independently of the processor and be connected to the processor via a bus to store instructions or program code. When the processor calls and executes the instructions or program code stored in the memory, the sensor determination method provided in the embodiments of the present application can be implemented.

[0172] In another possible implementation, the memory may also be integrated with the processor.

[0173] Specifically, the bus may be an Industry Standard Architecture (ISA) bus, a Peripheral Component Interconnect (PCI) bus, or an Extended Industry Standard Architecture (EISA) bus, etc. The bus may be divided into an address bus, a data bus, a control bus, etc.

[0174] In some examples, the electronic device may also include a communication interface.

[0175] Specifically, the communication interface is used to connect to other devices via a communication network. The communication network can be Ethernet, wireless access network, wireless local area network (WLAN), etc. The communication interface can include a receiving unit for receiving data and a sending unit for sending data.

[0176] In one design, in the electronic device provided in the embodiment of the present application, the communication interface can also be integrated into the processor.

[0177] In another hardware structure of an electronic device provided in an embodiment of the present application, the electronic device may include a processor and a communication interface. The processor is coupled to the communication interface.

[0178] The functions of the processor can refer to the description of the processor above. In addition, the processor also has a storage function, which can refer to the function of the memory above.

[0179] The communication interface is used to provide data to the processor. The communication interface can be an internal interface of the communication device or an external interface of the communication device.

[0180] An embodiment of the present application further provides a computer-readable storage medium, in which instructions are stored. When a computer executes the instructions, the computer executes each step in the compressor control method flow shown in the above method embodiment.

[0181] An embodiment of the present application further provides a computer program product comprising instructions, which, when executed on a computer, enables the computer to execute the compressor control method in the above method embodiment.

[0182] The above are only specific embodiments of the present application, but the scope of protection of the present application is not limited thereto. Any changes or replacements within the technical scope disclosed in this application should be included in the scope of protection of the present application. Therefore, the scope of protection of the present application should be based on the scope of protection of the claims.

Claims

1. An electric drive device testing system, characterized in that: The electric drive device testing system comprises: Electric drive device (2); A detection device (3), wherein an output shaft of the detection device (3) is connected to an output shaft of the electric drive device (2); A power supply device (4), the power supply device (4) being electrically connected to the electric drive device (2); A controller, the controller being electrically connected to the electric drive device (2), the detection device (3) and the power supply device (4), the controller being used to control the detection device (3) to cut off power when the electric drive device test system performs an electric drive detection test and when the electric drive device (2) and / or the detection device (3) fails.

2. The electric drive device testing system according to claim 1, characterized in that: The electric drive device testing system also includes: A first sensor, the first sensor being used to detect the rotation speed of an output shaft of the electric drive device (2); A timer, the timer being used to detect the duration of rotation of the output shaft of the detection device (3) after the detection device (3) is powered off; An emergency stop device, the emergency stop device being used to limit the rotation of the output shaft of the electric drive device (2) and the output shaft of the detection device (3); The controller is electrically connected to the first sensor, the emergency stop device and the timer; the controller is used to control the emergency stop device to limit the rotation of the output shaft of the electric drive device (2) and the output shaft of the detection device (3) within a preset time period after the detection device (3) is powered off and the rotation speed of the output shaft of the electric drive device (2) is still greater than zero.

3. The electric drive device testing system according to claim 2, characterized in that: Also includes: An access control system (6), the access control system (6) being electrically connected to the controller, the access control system (6) comprising: A cabin (61), wherein the cabin (61) forms a test space; A door body (62), the door body (62) being connected to the cabin body (61) and being used to open or close the test space; The controller is also used to control the emergency stop device to limit the rotation of the output shaft of the electric drive device (2) and the output shaft of the detection device (3) when the electric drive device test system is conducting an electric drive detection test and the door body (62) opens the test space.

4. The electric drive device testing system according to claim 2, characterized in that: It also includes a second sensor, which is used to detect the rotation speed of the output shaft of the detection device (3); The controller is electrically connected to the second sensor and is used to control the detection device (3) to be powered off when the rotational speed of the output shaft of the detection device (3) is not equal to the rotational speed of the output shaft of the electric drive device (2).

5. The electric drive device testing system according to any one of claims 1 to 4, characterized in that: The electric drive device testing system also includes: A blocking device (9), wherein the blocking device (9) is capable of limiting the rotation of the output shaft of the electric drive device (2); a third sensor, the third sensor being used to detect working state information of the blocking device (9); The blocking device (9) and the third sensor are both electrically connected to the controller; The controller is also used to control the electric drive device test system to perform an electric drive detection test when the power supply device (4) has no faults and the blocking device (9) does not restrict the rotation of the output shaft of the electric drive device (2).

6. The electric drive device testing system according to claim 5, characterized in that: The controller is also used to control the electric drive device test system to perform a stall detection test when the stall device (9) limits the rotation of the output shaft of the electric drive device (2) and a stall detection test is required.

7. The electric drive device testing system according to claim 5, characterized in that: The blocking device (9) comprises a latch, and a slot is provided on the output shaft of the electric drive device (2); the third sensor comprises a distance sensor; the distance sensor is used to detect the distance that the latch is inserted into the slot; when the latch is inserted into the slot, the blocking device (9) limits the rotation of the output shaft of the electric drive device (2).

8. The electric drive device testing system according to claim 3, characterized in that: The controller is also used to control the emergency stop device to limit the rotation of the output shaft of the electric drive device (2) and the output shaft of the detection device (3) when the electric drive device test system performs an electric drive detection test and the electric drive device (2) and / or the detection device (3) fail and the door body (62) opens the test space.

9. A control method, characterized in that: Applied to the electric drive device test system according to any one of claims 1 to 8, the control method comprises: When the electric drive device test system performs an electric drive detection test, if a fault signal is received, determining the type of the fault signal; If the fault signal indicates a fault in the electric drive device (2) and / or the detection device (3), the detection device (3) is controlled to be powered off.

10. The control method according to claim 9, characterized in that: After controlling the detection device (3) to be powered off, the control method further comprises: Acquiring the rotation speed of the output shaft of the electric drive device (2) after a preset time period, and determining whether the rotation speed of the output shaft of the electric drive device (2) is equal to zero; If the rotation speed of the output shaft of the electric drive device (2) is greater than zero, the rotation of the output shaft of the electric drive device (2) and the output shaft of the detection device (3) is restricted.

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