Operation method of vehicle power assembly, power assembly, vehicle and storage medium

Abstract

The invention provides an operation method of a vehicle power assembly, the power assembly, a vehicle and a storage medium. The method comprises the steps that under the condition that the inner ring rotates, the current first rotating speed of the inner ring and the current second rotating speed of the outer ring are obtained; under the condition that the first rotating speed is equal to the second rotating speed, reducing the first rotating speed to obtain a third rotating speed; whether the first end abuts against any groove bottom face or not is detected, and the groove bottom face is the groove bottom surface of a positioning groove formed between any two adjacent gears; when it is detected that the first end abuts against any groove bottom face, the third rotating speed is increased, and a fourth rotating speed is obtained; and under the condition that the fourth rotating speed is equal to the second rotating speed, the inner ring is controlled to operate at the fourth rotating speed. According to the power assembly, the problem that when the power assembly runs, the offset meshing phenomenon easily causes damage to parts in the power assembly can be solved.

Description

Technical Field

[0001] This application relates to the technical field of vehicle powertrains, and particularly to an operating method for a vehicle powertrain, a powertrain, a vehicle, and a storage medium. Background Art

[0002] In existing vehicles, a powertrain is configured to provide power for the vehicle and change the driving speed and gear of the vehicle. The powertrain includes a ratchet assembly and a gear assembly. When the powertrain is engaged, the ratchet in the ratchet assembly will slip backward into any two adjacent gears of the gear assembly. During the backward slipping process of the ratchet, there may be a situation where the ratchet cannot smoothly slip into any two adjacent gears, resulting in the occurrence of offset meshing. However, the offset meshing phenomenon is prone to damage the components in the powertrain. Summary of the Invention

[0003] In view of the above, embodiments of this application provide an operating method for a vehicle powertrain, a powertrain, a vehicle, and a storage medium, which can solve the problem that the offset meshing phenomenon that occurs when the multi-mode clutch in the powertrain is engaged is prone to damage the components in the powertrain.

[0004] A first aspect of this application discloses an operating method for a vehicle powertrain, which is applied to the powertrain of a vehicle. The powertrain includes an outer ring, an inner ring, and a ratchet. The outer ring is sleeved on the outer peripheral side of the inner ring. The ratchet is elastically connected to the inner wall of the outer ring. A plurality of gears are evenly arranged on the outer peripheral side of the inner ring. A first blocking portion is provided on the inner wall of the outer ring. The ratchet includes a first end and a second end that are opposite to each other. The first end abuts or fits against any one of the gears, and the second end abuts against the first blocking portion. The method includes: when the inner ring rotates, obtaining the current first rotation speed of the inner ring and the current second rotation speed of the outer ring; when the first rotation speed is equal to the second rotation speed, reducing the first rotation speed to obtain a third rotation speed; detecting whether the first end abuts against any one of the groove bottom surfaces, where the groove bottom surface is the bottom surface of the positioning groove formed between any two adjacent gears; when it is detected that the first end abuts against any one of the groove bottom surfaces, increasing the third rotation speed to obtain a fourth rotation speed; when the fourth rotation speed is equal to the second rotation speed, controlling the inner ring to operate at the fourth rotation speed.

[0005] Compared with the related art, the embodiments of this application have at least the following advantages: In order to enable the ratchet to quickly engage with the inner ring and the outer ring, when the inner ring is rotating and the first speed and the second speed are the same, the current first speed of the inner ring is reduced so that the first end of the ratchet can smoothly slide backward into the space between any two adjacent gears. After determining that the first end abuts against the bottom surface of any groove, the speed of the inner ring is increased so that the fourth speed of the inner ring is equal to the second speed of the inner ring, thereby eliminating the gap between the first end and the gear closest to the first end. In this way, it is ensured that the first end abuts against the gear closest to the first end, thus avoiding the occurrence of offset meshing phenomenon.

[0006] In some possible implementation manners, the powertrain further includes a driving member, and the driving member is drivingly connected to the inner ring; increasing the third speed to obtain a fourth speed includes: controlling the driving member to drive the inner ring to rotate at a preset output torque to increase the third speed; and using the increased third speed as the fourth speed.

[0007] In some possible implementation manners, after increasing the third speed to obtain a fourth speed, the method further includes: when the fourth speed is not equal to the second speed, continuing to drive the inner ring to rotate by the preset output torque until the fourth speed is equal to the second speed.

[0008] In some possible implementation manners, the powertrain further includes a driving member, and the driving member is drivingly connected to the inner ring; before obtaining the current first speed of the inner ring and the current second speed of the outer ring when the inner ring is rotating, the method includes: when the inner ring is stationary, controlling the driving member to drive the inner ring to rotate at a preset speed and obtaining the current fifth speed of the inner ring; after obtaining the current second speed of the outer ring, the method further includes: calculating the difference between the fifth speed and the second speed; when the difference is less than a preset speed threshold, controlling the driving member to drive the inner ring to rotate at a preset output torque to increase the fifth speed; obtaining the current first speed of the inner ring includes: obtaining the increased fifth speed and using the increased fifth speed as the first speed.

[0009] In some possible implementation manners, after calculating the difference between the fifth speed and the second speed, the method further includes: when the difference is not less than the preset speed threshold, continuing to drive the inner ring to rotate at the preset speed until the difference is less than the preset speed threshold.

[0010] In some possible implementation manners, after obtaining the current first rotation speed of the inner ring and the current second rotation speed of the outer ring, the method further includes: when the first rotation speed is not equal to the second rotation speed, continuing to drive the inner ring to rotate by the preset output torque until the first rotation speed is equal to the second rotation speed.

[0011] In some possible implementation manners, the detecting whether the first end abuts against any bottom surface of the slots includes: after controlling the inner ring to operate at the third rotation speed for a preset duration, detecting whether the first end abuts against any bottom surface of the slots.

[0012] A second aspect of the present application discloses a powertrain, which includes an outer ring, an inner ring, a ratchet, and a controller. The outer ring is sleeved on the outer peripheral side of the inner ring. The ratchet is elastically connected to the inner wall of the outer ring. A plurality of gears are arranged on the outer peripheral side of the inner ring. A first blocking portion is provided on the inner wall of the outer ring. The ratchet includes opposite first and second ends. The first end is configured to abut against or fit any one of the gears, and the second end is configured to abut against the first blocking portion. The controller is configured to control the rotation of the outer ring and the inner ring, and the controller is configured to execute the operation method of the vehicle powertrain as described above.

[0013] A third aspect of the present application discloses a vehicle, which includes a processor and a memory. The memory is configured to store instructions, and the processor is configured to call the instructions in the memory so that the vehicle executes the operation method of the vehicle powertrain as described above.

[0014] A fourth aspect of the present application discloses a computer-readable storage medium, which includes computer instructions. When the computer instructions run on a vehicle, the vehicle is enabled to execute the operation method of the vehicle powertrain as described above.

[0015] It can be understood that the powertrain in the second aspect, the vehicle in the third aspect, and the computer-readable storage medium in the fourth aspect provided above all correspond to the method in the first aspect. Therefore, the beneficial effects that can be achieved can refer to the beneficial effects in the corresponding method provided above, and will not be elaborated here. Description of the Drawings

[0016] Figure 1 It is a schematic structural diagram of the powertrain in an unmeshed state according to an embodiment of the present application.

[0017] Figure 2 It is a schematic structural diagram of the powertrain in a normal meshed state according to an embodiment of the present application.

[0018] Figure 3 It is a schematic structural diagram of the powertrain in a biased meshed state according to an embodiment of the present application.

[0019] Figure 4 This is a flowchart of the steps of an operating method for a vehicle powertrain according to an embodiment of the present application.

[0020] Figure 5 This is another flowchart of the steps of an operating method for a vehicle powertrain according to an embodiment of the present application.

[0021] Figure 6 This is a schematic diagram of the hardware structure of a vehicle according to an embodiment of the present application.

[0022] Description of the main component symbols: Outer ring, 1; First blocking portion, 11; Second blocking portion, 12; Inner ring, 2; Gear, 21; Positioning groove, 22; Gap, 23; Ratchet, 3; First end, 31; Second end, 32; Elastic member, 4.

[0023] The following specific embodiments will further illustrate the present application in conjunction with the above-mentioned drawings. Specific embodiments

[0024] In order to more clearly understand the above objects, features and advantages of the present application, the present application will be described in detail below in conjunction with the drawings and specific embodiments. It should be noted that, without conflict, the embodiments of the present application and the features in the embodiments can be combined with each other.

[0025] Many specific details are set forth in the following description in order to provide a thorough understanding of the present application. The described embodiments are only a part of the embodiments of the present application, rather than all of the embodiments.

[0026] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the technical field to which the present application belongs. The terms used in the description of the present application herein are only for the purpose of describing specific embodiments, and are not intended to limit the present application.

[0027] Further, it should be noted that in this text, the terms "include", "comprise" or any other variant thereof are intended to cover a non-exclusive inclusion, such that a process, method, article or device including a series of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article or device. Without further limitation, an element defined by the phrase "including a..." does not exclude the presence of additional identical elements in the process, method, article or device including the element.

[0028] In this application, "at least one" means one or more, and "a plurality" means two or more than two. "And / or" describes the relationship between related objects and indicates that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist simultaneously, and B exists alone, where A and B can be singular or plural. The terms "first", "second", "third", "fourth", etc. (if any) in the specification, claims, and drawings of this application are used to distinguish similar objects, rather than to describe a specific order or sequence.

[0029] In the embodiments of this application, words such as "exemplary" or "for example" are used to give examples, illustrations, or explanations. Any embodiment or design solution described as "exemplary" or "for example" in the embodiments of this application should not be construed as being more preferred or having more advantages than other embodiments or design solutions. Rather, the use of words such as "exemplary" or "for example" is intended to present relevant concepts in a specific manner.

[0030] In the existing vehicle configuration, a powertrain is provided to enable the powertrain to provide power to the vehicle and change the driving speed and gear of the vehicle. Among them, the powertrain includes a ratchet assembly and a gear assembly. When the powertrain is engaged, the ratchet in the ratchet assembly will slide backward into any two adjacent gears of the gear assembly. Due to the resistance of the side surface of the gear tip, it is not guaranteed that the ratchet can slide backward into any two adjacent gears of the gear assembly every time.

[0031] That is, during the backward sliding of the ratchet, there may be a situation where the ratchet cannot smoothly slide into any two adjacent gears, resulting in the occurrence of offset meshing. However, the offset meshing phenomenon is prone to damage the ratchet and gears in the powertrain.

[0032] To solve this problem, the embodiments of this application provide a method for operating a vehicle powertrain. The method for operating a vehicle powertrain is applied to the powertrain. Please refer to Figure 1, the powertrain includes an outer ring 1, an inner ring 2, a ratchet 3, a driving member (not shown in the figure), a controller (not shown in the figure), and a power member (not shown in the figure). The outer ring 1 is sleeved on the outer peripheral side of the inner ring 2. The ratchet 3 is elastically connected to the inner wall of the outer ring 1. A plurality of gears 21 can be arranged on the outer peripheral side of the inner ring 2. For example, the plurality of gears 21 are evenly arranged on the outer peripheral side of the inner ring 2. A first blocking portion 11 is provided on the inner wall of the outer ring 1. The ratchet 3 includes opposite first and second ends 31 and 32. The first end 31 is used to abut or fit against any one of the gears 21, and the second end 32 is used to abut against the first blocking portion 11. The driving member is drivingly connected to the inner ring 2, and the power member is drivingly connected to the outer ring 1. Torque is transmitted between the outer ring 1 and the inner ring 2 by the ratchet 3. The controller is communicatively connected to the driving member and the power member, and the controller is configured to execute an operating method for a vehicle powertrain. Among them, the operating method of the vehicle powertrain is described in detail below. To avoid repetition, it will not be elaborated here.

[0033] In this embodiment, the controller may include one or more processing units. For example: the controller may include an application processor (AP), a modem, a graphics processing unit (GPU), an image signal processor (ISP), a video codec, a digital signal processor (DSP), a baseband processor, and / or a neural-network processing unit (NPU), etc. Among them, different processing units may be independent devices or integrated in one or more controllers.

[0034] In this embodiment, the driving member and the power member may be motors, and the types of the driving member and the power member are not limited in this application. At the same time, the types of the driving member and the power member may be the same or different.

[0035] Further, please continue to refer to Figure 1 , the powertrain further includes an elastic member 4. One end of the elastic member 4 is fixedly connected to the inner wall of the outer ring 1, and the other end is fixedly connected to the ratchet 3. Among them, the elastic member 4 may be a spring or other devices with elasticity, and the specific type of the elastic member 4 is not limited in this application.

[0036] A second blocking portion 12 is further provided on the inner wall of the outer ring 1. The second blocking portion 12 abuts against the middle of the ratchet 3. In this way, an external force can be applied to the second blocking portion 12 to drive the ratchet 3 to rotate.

[0037] It should be noted that since the gap between the inner ring 2 and the outer ring 1 is smaller than the length of the ratchet wheel 3, when the rotational speed directions of the inner ring 2 and the outer ring 1 are the same and the rotational speed of the inner ring 2 is equal to that of the outer ring 1, the ratchet wheel 3 is squeezed between the inner ring 2 and the outer ring 1. At this time, the inner ring 2 can rotate freely in the direction opposite to the rotational speed of the outer ring 1, but in the direction same as the rotational speed of the outer ring 1, the rotational speed of the inner ring 2 is less than that of the outer ring 1.

[0038] In this embodiment, as Figure 1 shown, when the first end 31 abuts against the top surface of any one gear 21 close to the elastic member 4 and the second end 32 abuts against the first blocking portion 11, at this time, the power assembly is in a disengaged state.

[0039] As Figure 2 shown, when the first end 31 abuts against the bottom surface of the positioning groove 22 formed between any two adjacent gears 21 and the second end 32 abuts against the first blocking portion 11, at this time, the power assembly is in a normal engaged state.

[0040] As Figure 3 shown, when the first end 31 abuts against or abuts on any one gear 21 and the second end 32 abuts against the first blocking portion 11, at this time, the power assembly is in an offset engaged state.

[0041] Next, taking the inner ring 2 rotating in the direction of the inner ring 2 shown in Figure 1 and the outer ring 1 rotating in the direction of the outer ring 1 shown in Figure 1 as an example, the operation method of the vehicle power assembly in this embodiment will be described. However, it does not limit that the rotational directions of the inner ring 2 and the outer ring 1 must be counterclockwise. In other embodiments, the rotational directions of the inner ring 2 and the outer ring 1 can be set according to actual requirements.

[0042] The operation method of the vehicle power assembly executed by the controller in this embodiment may include: when the inner ring 2 rotates, obtaining the current first rotational speed of the inner ring 2 and the current second rotational speed of the outer ring 1. When the first rotational speed is equal to the second rotational speed, reducing the first rotational speed to obtain a third rotational speed. Detecting whether the first end 31 abuts against any bottom surface, where the bottom surface is the bottom surface of the positioning groove 22 formed between any two adjacent gears 21. When it is detected that the first end 31 abuts against any bottom surface, increasing the third rotational speed to obtain a fourth rotational speed. When the fourth rotational speed is equal to the second rotational speed, controlling the inner ring 2 to operate at the fourth rotational speed.

[0043] In order to enable the powertrain to quickly switch from the unmeshed state to the normal meshed state, when the inner ring 2 rotates and the first speed is the same as the second speed, the current first speed of the inner ring 2 is reduced so that the first end 31 of the ratchet 3 can smoothly slide backward into any two adjacent gears 21. Then, when it is determined that the first end 31 abuts against the bottom surface of any groove, the speed of the inner ring 2 is increased so that the fourth speed of the inner ring 2 is equal to the second speed of the outer ring 1, thereby eliminating the gap 23 between the first end 31 and the gear 21 closest to the first end 31. In this way, it is ensured that the powertrain is in the normal meshed state, thus avoiding the occurrence of offset meshing phenomenon.

[0044] Please refer to Figure 4 For this, an operation method of a vehicle powertrain is provided for an embodiment of the present application. The operation method of the vehicle powertrain is applied to the powertrain of the vehicle. For example, the operation method of the vehicle powertrain is applied to the controller of the powertrain of the vehicle. Among them, the vehicle can be a fuel vehicle or a new energy vehicle, and the present application does not limit the specific type of the vehicle.

[0045] The operation method of the vehicle powertrain includes the following steps: Step 101: When the inner ring rotates, obtain the current first speed of the inner ring and the current second speed of the outer ring.

[0046] In this embodiment, a first detection component can be arranged in the powertrain. The first detection component is communicatively connected to the controller. The first detection component is used to collect the speeds of the inner ring 2 and the outer ring 1 and send the speeds of the inner ring 2 and the outer ring 1 to the controller. Among them, the first detection component can be an electromagnetic induction type speed sensor or a Hall type speed sensor. In other embodiments, the first detection component can also be other types of sensors. The present application does not limit the specific type of the first detection component as long as the first detection component has the function of collecting the speeds of the inner ring 2 and the outer ring 1.

[0047] Step 102: When the first speed is equal to the second speed, reduce the first speed to obtain a third speed.

[0048] In this embodiment, when the first speed is equal to the second speed, at this time, the ratchet 3 is stuck between the inner ring 2 and the outer ring 1, that is, the powertrain may be in Figure 1 the normal meshed state or may be in the offset meshed state. In order to avoid the powertrain being in the offset meshed state, control the driving component to be in the speed mode again to reduce the first speed. In this way, the first end 31 may gradually slide from the top surface of a gear 21 into the positioning groove 22 of the gear 21 close to the second end 32, thereby avoiding the powertrain being in the offset meshed state. Finally, the reduced first speed is used as the third speed.

[0049] Specifically, the difference between the first rotational speed and the preset rotational speed is used as the third rotational speed. The preset rotational speed can be 60 revolutions per minute. In other embodiments, the preset rotational speed can also be 50 revolutions per minute, 65 revolutions per minute, or 70 revolutions per minute. The present application does not limit the specific value of the preset rotational speed.

[0050] Step 103: Detect whether the first end abuts against the bottom surface of any groove.

[0051] In this embodiment, the bottom surface of the groove is the bottom surface of the positioning groove 22 formed between any two adjacent gears 21. After reducing the first rotational speed, after controlling the inner ring 2 to operate at the third rotational speed for a preset duration, it is detected whether the first end 31 abuts against the bottom surface of any groove. The preset duration can be 50 ms. In other embodiments, the preset duration can also be 45 ms, 60 ms, or 70 ms. The present application also does not limit the specific value of the preset duration.

[0052] It should be noted that the values of the preset rotational speed and the preset duration cannot be too large to avoid the ratchet 3 slipping into the next positioning groove 22.

[0053] It should also be noted that in order to detect whether the first end 31 abuts against the bottom surface of any groove, in this embodiment, a second detection member can be provided in the powertrain. The second detection member is communicatively connected to the controller. The second detection member is used to collect an image including the ratchet 3 and send the image to the controller. The controller can perform image analysis on the image to determine whether the first end 31 abuts against the bottom surface of any groove. The second acquisition member can be a camera. The present application does not limit the type of the second acquisition member.

[0054] In other embodiments, it is also possible to determine whether the first end 31 abuts against the bottom surface of any groove by means of simulation, and obtain a simulation result when the rotational speeds of the inner ring 2 and the outer ring 1 are respectively at different speed values. Based on the rotational speeds of the inner ring 2 and the outer ring 1 when the powertrain is currently operating, it is determined whether the current first end 31 abuts against the bottom surface of any groove from the simulation result.

[0055] Step 104: When it is detected that the first end abuts against the bottom surface of any groove, increase the third rotational speed to obtain a fourth rotational speed.

[0056] In this embodiment, if it is detected that the first end 31 abuts against the bottom surface of any groove, it indicates that under the action of the elastic member 4, the first end 31 of the ratchet 3 slides into the bottom surface of any groove, and the powertrain is no longer in a biased meshing state. However, there may be a gap 23 between the first end 31 and the gear 21 on the right side of the positioning groove 22 against which the first end 31 abuts. To eliminate this gap 23, the driving member is controlled to drive the inner ring 2 to rotate with a preset output torque to increase the third rotational speed, and the increased third rotational speed is used as the fourth rotational speed.

[0057] In some embodiments, it is detected whether the fourth rotational speed is equal to the second rotational speed. When it is detected that the fourth rotational speed is not equal to the second rotational speed, it indicates that the clearance 23 has not been completely eliminated, and it is necessary to continue to control the driving member to drive the inner ring 2 to rotate with a preset output torque until the fourth rotational speed is equal to the second rotational speed. At this time, the clearance 23 is completely eliminated.

[0058] In other embodiments, if it is detected that the first end 31 does not abut against the bottom surface of any groove, it indicates that a biased meshing phenomenon may occur. At this time, it is necessary to reduce the current rotational speed of the inner ring 2 so that the first end 31 can slide into any one of the positioning grooves 22.

[0059] It should be noted that when eliminating the clearance 23, controlling the driving member to be in the torque mode to drive the inner ring 2 to rotate can make the output torque of the driving member controllable, so as to control the fourth rotational speed to stably approach the second rotational speed.

[0060] It should also be noted that the preset output torque in step 101 and the preset output torque in this step may be the same or different, and can be set according to the actual situation.

[0061] Step 105: When the fourth rotational speed is equal to the second rotational speed, control the inner ring to operate at the fourth rotational speed.

[0062] In this embodiment, when the fourth rotational speed is equal to the second rotational speed, it indicates that the clearance 23 has been completely eliminated. At this time, the power assembly is in a normal meshing state, and it is only necessary to control the inner ring 2 to stably operate at the fourth rotational speed.

[0063] Compared with the related art, the embodiments of the present application have at least the following advantages: In order to enable the ratchet to quickly mesh with the inner ring and the outer ring, when the first rotational speed is the same as the second rotational speed, the current first rotational speed of the inner ring is reduced so that the first end of the ratchet can smoothly slide back into the space between any two adjacent gears. After it is determined that the first end abuts against the bottom surface of any groove, the rotational speed of the inner ring is increased so that the fourth rotational speed of the inner ring is equal to the second rotational speed of the inner ring, in order to eliminate the clearance between the first end and the gear closest to the first end. In this way, it is ensured that the first end abuts against the gear closest to the first end, thereby avoiding the occurrence of the biased meshing phenomenon.

[0064] Please refer to Figure 5 , Figure 5 which is another schematic flow diagram of the operation of the vehicle power assembly provided by the embodiment of the present application. This embodiment is a detailed description before performing step 101.

[0065] Step 201: When the inner ring is stationary, control the driving member to drive the inner ring to rotate at a preset speed, and obtain the current fifth rotational speed of the inner ring.

[0066] In this embodiment, when the inner ring 2 is stationary, the driving member is controlled to be in the speed mode. At this time, the driving member drives the inner ring 2 to rotate at a preset speed, and the current fifth rotational speed of the inner ring 2 is obtained. Among them, the value of the preset speed can refer to the specific value of the second rotational speed.

[0067] Step 202: Obtain the current second rotational speed of the outer ring.

[0068] That is, obtain the current second rotational speed of the outer ring 1.

[0069] Step 203: Calculate the difference between the fifth rotational speed and the second rotational speed.

[0070] Calculate the difference between the fifth rotational speed and the second rotational speed to facilitate subsequent determination of whether the rotational speed of the inner ring 2 is gradually approaching the rotational speed of the outer ring 1.

[0071] Step 204: When the difference is less than the preset rotational speed threshold, control the driving member to drive the inner ring to rotate with a preset output torque to increase the fifth rotational speed.

[0072] In this embodiment, it is detected whether the difference between the fifth rotational speed and the second rotational speed is less than the preset rotational speed threshold. When it is detected that the difference between the fifth rotational speed and the second rotational speed is less than the preset rotational speed threshold, control the driving member to drive the inner ring 2 to rotate with a preset output torque to increase the fifth rotational speed.

[0073] Among them, the preset rotational speed threshold can be 10 revolutions per minute, and the preset output torque can be 3 Nm. In other embodiments, the preset rotational speed threshold can also be 12 revolutions per minute, 15 revolutions per minute or 20 revolutions per minute, and the preset output torque can also be 3.5 Nm, 4 Nm or 5 Nm. The present application does not limit the specific values of the preset rotational speed threshold and the preset output torque, which can be set according to the actual rotational speed requirements and torque requirements.

[0074] Step 205: Obtain the increased fifth rotational speed and use the increased fifth rotational speed as the first rotational speed.

[0075] When the difference between the fifth rotational speed and the second rotational speed is less than the preset rotational speed threshold, and the driving member is in the torque mode to drive the inner ring 2 to rotate to increase the fifth rotational speed, obtain the increased fifth rotational speed and use the increased fifth rotational speed as the first rotational speed.

[0076] In this embodiment, during the process of the inner ring 2 changing from the stationary state to the rotating state, and when the rotational direction of the inner ring 2 is required (i.e., Figure 1When the rotation direction of the inner ring 2 (shown as the counterclockwise direction) is the same as that of the outer ring 1, first control the driving member to be in the speed mode to drive the inner ring 2 to rotate, so that the rotational speed of the inner ring 2 rapidly approaches the rotational speed of the outer ring 1. When it is detected that the difference between the fifth rotational speed and the second rotational speed is less than the preset rotational speed threshold, it indicates that the rotational speed of the inner ring 2 is gradually approaching the rotational speed of the outer ring 1. At this time, it is necessary to control the driving member to be in the torque mode, so that the driving member drives the inner ring 2 to rotate according to the preset output torque, increase the rotational speed of the inner ring 2, and control the rotational speed of the inner ring 2 to be equal to the rotational speed of the outer ring 1. In this way, it is possible to avoid the situation where the torque is too large at the moment when the ratchet 3 contacts any one of the gears 21 and the first blocking portion 11, causing damage to the components.

[0077] Step 206: When the difference is not less than the preset rotational speed threshold, continue to drive the inner ring to rotate at the preset speed until the difference is less than the preset rotational speed threshold.

[0078] In some embodiments, when it is detected that the difference between the fifth rotational speed and the second rotational speed is not less than the preset rotational speed threshold, continue to control the driving member to be in the speed mode and drive the inner ring 2 to rotate until the difference between the fifth rotational speed and the second rotational speed is less than the preset rotational speed threshold. That is, when the difference between the fifth rotational speed and the second rotational speed is not less than the preset rotational speed threshold, it indicates that the difference between the rotational speed of the outer ring 1 and the rotational speed of the inner ring 2 is still large, and it is necessary to continue to increase the rotational speed of the inner ring 2. At this time, it is necessary to control the driving member to be in the speed mode, so that the driving member can quickly drive the inner ring 2 to rotate, and control the rotational speed of the inner ring 2 to gradually approach the rotational speed of the outer ring 1.

[0079] It should be noted that when the driving member is in the speed mode, the main goal is to control the rotational speed of the driving member, so that the driving member rotates at the preset speed and maintains a stable speed output. And usually, the response speed is relatively fast, the speed adjustment of the driving member can be achieved in a short time, and a wide range of speed adjustment can be realized, and it has a certain adaptability to load changes. However, in the case of high torque loads, control failure may occur.

[0080] When the driving member is in the torque mode, the main goal is to control the torque output by the driving member, so that the driving member outputs a specific torque to meet the torque requirements of the load. And it can accurately control the torque output by the driving member, so that the driving member can output the required torque under different load conditions. However, in this mode, the speed of the driving member will be naturally adjusted with the change of the load, and it is not very suitable for occasions with extremely high requirements for speed stability.

[0081] Compared with the related art, the embodiments of the present application have at least the following advantages: When the inner ring moves from the stationary state to the rotating state, first control the driving member to drive the inner ring to rotate in the speed mode, so as to quickly increase the rotation speed of the inner ring and gradually approach the rotation speed of the outer ring. When the difference between the second rotation speed of the outer ring and the fifth rotation speed of the inner ring is less than the preset rotation speed threshold, it indicates that the gap between the rotation speed of the inner ring and the rotation speed of the outer ring is small, and it is necessary to control the driving member to be in the torque mode, so that the driving member drives the inner ring to rotate according to the preset output torque, increase the rotation speed of the inner ring, and control the rotation speed of the inner ring to be equal to the rotation speed of the outer ring. In this way, it is avoided that the torque is too large when the ratchet contacts any one of the gears and the first blocking portion, causing damage to the components.

[0082] Please refer to Figure 6 , Figure 6 which is a schematic diagram of the hardware structure of the vehicle 1000 provided by the embodiment of the present application. As Figure 6 shown, the vehicle 1000 may include a processor 1001 and a memory 1002. The memory 1002 is used to store one or more computer programs 1003. The one or more computer programs 1003 are configured to be executed by the processor 1001. The one or more computer programs 1003 include instructions, and the above instructions can be used to implement the above method in the vehicle 1000.

[0083] It can be understood that the structure schematically shown in this embodiment does not constitute a specific limitation on the vehicle 1000. In other embodiments, the vehicle 1000 may include more or fewer components than shown in the figure, or combine certain components, or split certain components, or have different component arrangements.

[0084] The processor 1001 may also be provided with a memory for storing instructions and data. In some embodiments, the memory in the processor 1001 is a cache memory. This memory can save the instructions or data that the processor 1001 has just used or recycled. If the processor 1001 needs to use the instruction or data again, it can be directly called from this memory. This avoids repeated accesses, reduces the waiting time of the processor 1001, and thus improves the efficiency of the system.

[0085] In some embodiments, the processor 1001 may include one or more interfaces. The interfaces may include an inter-integrated circuit (I2C) interface, an inter-integrated circuit sound (I2S) interface, a pulse code modulation (PCM) interface, a universal asynchronous receiver / transmitter (UART) interface, a mobile industry processor interface (MIPI), a general-purpose input / output (GPIO) interface, a SIM interface, and / or a USB interface, etc.

[0086] In some embodiments, the processor 1001 is used to execute acceleration schemes such as single instruction multiple data (SIMD) and very long instruction word (VLIW).

[0087] In some embodiments, the memory 1002 may include high-speed random access memory, and may also include non-volatile memory, such as a hard disk, a memory, a plug-in hard disk, a Smart Media Card (SMC), a Secure Digital (SD) card, a Flash Card, at least one magnetic disk storage device, a flash memory device, or other volatile solid-state storage devices.

[0088] This embodiment also provides a computer-readable storage medium, in which computer instructions are stored. When the instructions run on a vehicle, the vehicle is enabled to execute the above-related method steps to implement the method in the above embodiment.

[0089] Among them, the vehicle and the computer-readable storage medium provided in this embodiment are both used to execute the corresponding methods provided above. Therefore, the beneficial effects that can be achieved can refer to the beneficial effects in the corresponding methods provided above, and will not be elaborated here.

[0090] In practical applications, the above functions can be allocated to different functional modules as needed, that is, the internal structure of the device is divided into different functional modules to complete all or part of the functions described above.

[0091] In several embodiments provided in this application, the disclosed devices and methods can be implemented in other ways. For example, the device embodiments described above are illustrative. For example, the division of the module or unit is a logical function division. In actual implementation, there may be other division methods. For example, multiple units or components can be combined or integrated into another device, or some features can be ignored or not executed. Another point is that the displayed or discussed couplings or direct couplings or communication connections between each other can be through some interfaces. The indirect coupling or communication connection of the device or unit can be in electrical, mechanical or other forms.

[0092] The unit described as a separate component may or may not be physically separated. The component displayed as a unit may be a physical unit or multiple physical units, that is, it can be located in one place, or it can be distributed to multiple different places. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0093] In addition, in each embodiment of this application, each functional unit can be integrated in a processing unit, or each unit can exist physically alone, or two or more units can be integrated in one unit. The above-mentioned integrated unit can be implemented in the form of hardware or in the form of a software functional unit.

[0094] If the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a readable storage medium. Based on this understanding, the technical solution of the embodiments of this application, in essence, or the part that contributes to the prior art, or all or part of this technical solution, can be embodied in the form of a software product. The software product is stored in a storage medium and includes several instructions to enable a device (which can be a single-chip microcomputer, a chip, etc.) or a processor to execute all or part of the steps of the methods described in each embodiment of this application. The foregoing storage medium includes: various media such as USB flash drives, mobile hard disks, read-only memories (ROMs), random access memories (RAMs), magnetic disks or optical discs that can store program codes.

[0095] As described above, the above are only the specific implementation manners of this application, but the protection scope of this application is not limited thereto. Any changes or substitutions within the technical scope disclosed in this application should be covered by the protection scope of this application.

Claims

1. A method for operating a vehicle powertrain, characterized in that, Applied to a powertrain of a vehicle, the powertrain includes an outer ring, an inner ring, and a ratchet. The outer ring is sleeved on the outer peripheral side of the inner ring. The ratchet is elastically connected to the inner wall of the outer ring. A plurality of gears are arranged on the outer peripheral side of the inner ring. A first blocking portion is provided on the inner wall of the outer ring. The ratchet includes an opposite first end and a second end. The first end is used to abut or fit against any one of the gears. The second end is used to abut against the first blocking portion. The method includes: When the inner ring rotates, obtain the current first rotation speed of the inner ring and the current second rotation speed of the outer ring. When the first rotation speed is equal to the second rotation speed, reduce the first rotation speed to obtain a third rotation speed. Detect whether the first end abuts against any one of the groove bottom surfaces, where the groove bottom surface is the bottom surface of the positioning groove formed between any two adjacent gears. When it is detected that the first end abuts against any one of the groove bottom surfaces, increase the third rotation speed to obtain a fourth rotation speed. When the fourth rotation speed is equal to the second rotation speed, control the inner ring to operate at the fourth rotation speed.

2. The operating method of the vehicle powertrain according to claim 1, characterized in that The powertrain further includes a driving member, and the driving member is drivingly connected to the inner ring. The increasing the third rotation speed to obtain a fourth rotation speed includes: Control the driving member to drive the inner ring to rotate with a preset output torque to increase the third rotation speed. Take the increased third rotation speed as the fourth rotation speed.

3. The operating method of the vehicle powertrain according to claim 2, wherein, After the increasing the third rotation speed to obtain a fourth rotation speed, the method further includes: When the fourth rotation speed is not equal to the second rotation speed, continue to drive the inner ring to rotate with the preset output torque until the fourth rotation speed is equal to the second rotation speed.

4. The operating method of the vehicle powertrain according to claim 1, characterized in that, The powertrain further includes a driving member, and the driving member is drivingly connected to the inner ring. Before obtaining the current first rotation speed of the inner ring and the current second rotation speed of the outer ring when the inner ring rotates, the method includes: When the inner ring is stationary, control the driving member to drive the inner ring to rotate at a preset speed and obtain the current fifth rotation speed of the inner ring. After obtaining the current second rotation speed of the outer ring, the method further includes: Calculate the difference between the fifth rotation speed and the second rotation speed. When the difference is less than a preset rotation speed threshold, control the driving member to drive the inner ring to rotate with a preset output torque to increase the fifth rotation speed. The obtaining the current first rotation speed of the inner ring includes: Obtain the increased fifth rotation speed and take the increased fifth rotation speed as the first rotation speed.

5. The operating method of the vehicle powertrain according to claim 4, characterized in that After calculating the difference between the fifth rotation speed and the second rotation speed, the method further includes: When the difference is not less than the preset rotation speed threshold, continue to drive the inner ring to rotate at the preset speed until the difference is less than the preset rotation speed threshold.

6. The operating method of the vehicle powertrain according to claim 4, characterized in that, After obtaining the current first rotation speed of the inner ring and the current second rotation speed of the outer ring, the method further includes: When the first rotational speed is not equal to the second rotational speed, continue to drive the inner ring to rotate by the preset output torque until the first rotational speed is equal to the second rotational speed.

7. The operating method of the vehicle powertrain according to any one of claims 1 to 6, characterized in that The detecting whether the first end abuts against any bottom surface of the grooves includes: After controlling the inner ring to operate at the third rotational speed for a preset duration, detect whether the first end abuts against any bottom surface of the grooves.

8. A powertrain, characterized in that, The powertrain includes an outer ring, an inner ring, a ratchet, and a controller. The outer ring is sleeved on the outer peripheral side of the inner ring. The ratchet is elastically connected to the inner wall of the outer ring. A plurality of gears are arranged on the outer peripheral side of the inner ring. A first blocking portion is provided on the inner wall of the outer ring. The ratchet includes a first end and a second end which are opposite to each other. The first end is used to abut against or fit any one of the gears. The second end is used to abut against the first blocking portion. The controller is used to control the rotation of the outer ring and the inner ring, and the controller is used to execute the operation method of the vehicle powertrain according to any one of claims 1 to 7.

9. A vehicle, characterized in that, The vehicle includes a processor and a memory. The memory is used to store instructions. The processor is used to call the instructions in the memory so that the vehicle executes the operation method of the vehicle powertrain according to any one of claims 1 to 7.

10. A computer-readable storage medium, characterized in that, It includes computer instructions. When the computer instructions run on the vehicle, the vehicle is made to execute the operation method of the vehicle powertrain according to any one of claims 1 to 7.

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