Vehicle power system control method and device, medium and electronic equipment

Abstract

The invention relates to a vehicle power system control method and device, a medium and electronic equipment.The vehicle power system comprises a first motor, a second motor, an engine and a clutch, an inner ring of the clutch is in driving connection with the first motor and the engine, and an outer ring of the clutch is in driving connection with the first motor; the first motor is used for driving an engine, and the second motor is used for driving the whole vehicle; the control method comprises the steps that working condition information of a vehicle is obtained; and after it is determined that the emergency out-of-gear working condition is met based on the working condition information of the vehicle, out-of-gear failure is met, and the driving function of the vehicle is forbidden, a first motor is controlled to rotate reversely so that the clutch can be out of gear. According to the invention, after the vehicle is out-of-gear failure, intervention can be carried out quickly, and the clutch hardware is prevented from being damaged.

Description

Technical Field

[0001] The present disclosure relates to the field of vehicle technology, and in particular to a vehicle power system control method, device, medium and electronic equipment. Background Art

[0002] With the vigorous development of new energy vehicles in China, hybrid vehicles are becoming more and more common in the application market. In order to improve the competitive advantage of hybrid vehicles in the market, major manufacturers and parts suppliers are improving the reliability of hybrid vehicles. In the hybrid system composed of a multi-mode clutch, a P1 motor and a P3 motor, the gear position of the vehicle can be controlled by controlling and adjusting the multi-mode clutch in gear or out of gear.

[0003] However, in some application scenarios, the vehicle may fail to shift gears. If the user does not discover it in time and continues to start the vehicle, the multi-mode clutch will be subjected to huge static torque, resulting in the risk of damage to the multi-mode clutch and shaft gear components. Summary of the invention

[0004] In order to solve the above technical problems, the present disclosure provides a vehicle power system control method, device, medium and electronic device.

[0005] In a first aspect, the present disclosure provides a vehicle power system control method, wherein the vehicle power system includes a first motor, a second motor, an engine, and a clutch, wherein the inner ring of the clutch is drivingly connected to the first motor and the engine, and the outer ring of the clutch is drivingly connected to the first motor, the first motor is used to drive the engine, and the second motor is used to drive the entire vehicle; the control method includes:

[0006] Obtain vehicle operating condition information;

[0007] Based on the working condition information of the vehicle, it is determined that an emergency gear-shifting working condition is met, and gear-shifting failure is met, after disabling the driving function of the vehicle, the first motor is controlled to reverse to disengage the clutch.

[0008] In some embodiments, the operating condition information includes a speed change rate of the second motor; and determining that an emergency shift-out condition is met based on the operating condition information of the vehicle includes:

[0009] Based on the fact that the speed change rate of the second motor is less than a threshold change rate, it is determined that the vehicle meets the emergency shift-out condition.

[0010] In some embodiments, the operating condition information includes a speed change rate of the second motor, a brake signal, and a vehicle speed; and determining that the gear shift failure is satisfied based on the operating condition information of the vehicle includes:

[0011] Based on the fact that the speed change rate of the second motor is less than a threshold change rate, the brake signal is maintained until the vehicle stops, and the vehicle speed is 0, it is determined that the vehicle meets the gear shift failure condition.

[0012] In some embodiments, disabling the driving function of the vehicle includes:

[0013] The forward torque of the first motor, the forward torque and the reverse torque of the second motor, and the engine are disabled.

[0014] In some embodiments, disabling the forward torque of the first motor, the forward torque and the reverse torque of the second motor, and the engine includes:

[0015] The forward torque output by the first motor and the second motor is controlled to be 0, the reverse gear is prohibited from being enabled, and the engine is prohibited from being started.

[0016] In some embodiments, controlling the first motor to reverse to disengage the clutch comprises:

[0017] The first motor is controlled to reverse at a preset speed; wherein the preset speed is less than or equal to 100 rpm / s.

[0018] In some embodiments, it also includes:

[0019] After the first motor is controlled to reverse at a preset speed for a preset time period, the vehicle driving function is unlocked.

[0020] In a second aspect, the present disclosure provides a vehicle power system control device, the vehicle power system comprising a first motor, a second motor, an engine and a clutch, the inner ring of the clutch is drivingly connected to the first motor and the engine, the outer ring of the clutch is drivingly connected to the first motor, the first motor is used to drive the engine, and the second motor is used to drive the entire vehicle; the control device comprises:

[0021] A working condition information acquisition module, used to acquire the working condition information of the vehicle;

[0022] The execution module is used to determine that an emergency gear-shifting condition is met based on the working condition information of the vehicle, and after the gear-shifting fails and the driving function of the vehicle is disabled, control the first motor to reverse to disengage the clutch.

[0023] In a third aspect, the present disclosure further provides a computer-readable storage medium having a computer program stored thereon, and when the computer program is executed by a processor, the steps of any one of the vehicle power system control methods provided in the first aspect are implemented.

[0024] In a fourth aspect, the present disclosure further provides an electronic device, comprising a memory and a processor, wherein the memory stores a computer program, and when the processor executes the computer program, the steps of any one of the vehicle power system control methods provided in the first aspect are implemented.

[0025] Compared with the prior art, the technical solution provided by the present invention has the following advantages:

[0026] The control method provided by the present disclosure is applied in a vehicle power system, in which the first motor of the vehicle power system is connected to the inner ring of the clutch and the engine, and the second motor is connected to the outer ring of the clutch. The first motor is used to drive the engine, and the second motor is also connected to the wheel to drive the entire vehicle. When the vehicle is in an emergency disengagement condition and fails to disengage, the driving function of the vehicle is disabled to prevent the vehicle and the engine from starting, causing the clutch to be subjected to static torque and causing the risk of hardware damage. And the first motor is controlled to reverse so that the wedge of the clutch falls off, the inner ring is separated from the outer ring, and the disengagement is completed. The present disclosure can quickly intervene after the vehicle fails to disengage to avoid damage to the clutch hardware. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and, together with the description, serve to explain the principles of the present disclosure.

[0028] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0029] Figure 1 A flow chart of a vehicle power system control method provided by an embodiment of the present disclosure;

[0030] Figure 2 A schematic diagram of the structure of a clutch provided in an embodiment of the present disclosure;

[0031] Figure 3 A schematic diagram of the structure of a vehicle power system control device provided by an embodiment of the present disclosure;

[0032] Figure 4 A schematic diagram of the structure of an electronic device provided in an embodiment of the present disclosure. DETAILED DESCRIPTION

[0033] In order to more clearly understand the above-mentioned objectives, features and advantages of the present disclosure, the scheme of the present disclosure will be further described below. It should be noted that the embodiments of the present disclosure and the features in the embodiments can be combined with each other without conflict.

[0034] In the following description, many specific details are set forth to facilitate a full understanding of the present disclosure, but the present disclosure may also be implemented in other ways different from those described herein; it is obvious that the embodiments in the specification are only part of the embodiments of the present disclosure, rather than all of the embodiments.

[0035] The synchronization strategy of the multi-mode clutch is that the P1 motor drives the engine to adjust the speed. When the speed of the inner ring is synchronized with the speed of the outer ring, the shift motor drives the shift actuator to combine, and then the engine outputs torque, and the inner ring drives the outer ring to work, so that the multi-mode clutch is in an overrunning state and the engine power is output. When it is necessary to shift gears, the P1 motor drives the engine to slow down, so that the speed of the inner ring is less than the speed of the outer ring. The torque of the inner and outer rings of the multi-mode clutch is within a reasonable range, and the shift actuator is driven to shift gears and interrupt the output of engine power. However, under some special working conditions, such as emergency braking by the driver or the triggering of the anti-lock function on icy and snowy roads, it is easy to cause the vehicle to fail to shift gears. If no treatment is performed and the vehicle is started and operated, the clutch components will be damaged.

[0036] In order to solve the above defects, the present disclosure provides a vehicle power system control method. Figure 1 A flow chart of a vehicle power system control method provided by an embodiment of the present disclosure is provided. Figure 2 A schematic diagram of a clutch structure provided in an embodiment of the present disclosure, referring to Figure 1 and Figure 2 ,refer to Figure 1 and Figure 2 The vehicle power system includes a first motor, a second motor, an engine and a clutch. The inner ring 11 of the clutch is connected to the first motor and the engine, and the outer ring 12 of the clutch is connected to the first motor. The first motor is used to drive the engine, and the second motor is used to drive the entire vehicle. Therefore, when the gear is normally disengaged, the first motor drives the engine to decelerate, so that the inner ring speed is less than the outer ring speed, and the inner ring torque and the outer ring torque are within a reasonable range, so that the wedge 13 can fall off normally by the action of the spring when the shift mechanism 14 is disengaged. In normal driving conditions, the driver releases the accelerator, the first motor drives the engine to adjust the speed and reduce the torque, and the clutch enters the gear position and is disengaged. The time is relatively sufficient, and it is easy to meet the speed conditions required for disengagement. However, if in some emergency disengagement conditions, the first motor does not have sufficient time to adjust the speed and reduce the torque, and the disengagement conditions are not met, so the disengagement also fails, damaging the clutch hardware.

[0037] The vehicle power system control method includes S110-S120:

[0038] S110: Obtain vehicle operating condition information.

[0039] S120: Determine based on the vehicle's operating condition information whether an emergency gear-shifting operating condition is met and whether gear-shifting fails, disable the vehicle's driving function, and then control the first motor to reverse to disengage the clutch.

[0040] The vehicle is not unable to successfully disengage under any operating conditions, but under some specific emergency disengagement conditions, such as a rapid decrease in vehicle speed, which causes the outer clutch speed to be less than the inner clutch speed, disengagement may fail. Therefore, the vehicle's operating condition information should be obtained and the current vehicle operating condition information should be judged. If the emergency disengagement conditions are not met, it is considered that there will be no disengagement failure and no subsequent processing operations are required. If the emergency disengagement conditions are met and the disengagement fails, the clutch needs to be processed to prevent the clutch from receiving static torque when the subsequent vehicle is started, which may damage the clutch and shaft gear components.

[0041] Since the inner ring of the clutch is rigidly connected to the engine and the first motor through shaft teeth and splines, and the outer ring of the clutch is meshed with the second motor through gears, in an emergency disengagement condition, the second motor and the vehicle speed decrease rapidly, the inner ring speed is greater than the outer ring speed, the shift mechanism is disengaged, and the wedge does not fall off normally due to the speed difference between the inner and outer rings and the torque conditions not meeting the disengagement conditions. It is still located in the inner ring groove, causing the clutch to remain in the engaged state and the disengagement fails. If the vehicle is driven after the disengagement fails, the clutch hardware will be damaged. In order to avoid the above situation, first disable the vehicle's drive function, prohibit the vehicle from moving and the engine from starting, to prevent the clutch from being affected by the drive components and being subjected to huge static torque, resulting in the risk of damage to the clutch and related shaft and tooth components.

[0042] Furthermore, the first motor is connected to the inner ring of the clutch, and the wedge block is stuck in the inner ring groove body, controlling the first motor to reverse, and the first motor drives the inner ring of the clutch to reverse, for example, along Figure 2 The wedge is lifted by the edge of the inner ring groove body by rotating counterclockwise, so that the wedge is separated from the inner ring groove body by the action of the spring, and the inner ring is separated from the outer ring, so that the vehicle clutch is disengaged, and the problem of disengagement failure is solved, and the vehicle can be used normally afterwards. The present invention can quickly intervene after the vehicle fails to disengage, avoiding damage to the clutch hardware.

[0043] In some embodiments, the operating condition information includes a speed change rate of the second motor; and determining that an emergency shift-out operating condition is met based on the operating condition information of the vehicle includes:

[0044] Based on the fact that the speed change rate of the second motor is less than the threshold change rate, it is determined that the vehicle meets the emergency gear shifting condition.

[0045] Exemplarily, the second motor is mechanically connected to the wheel, and the second motor is used to drive the whole vehicle. Therefore, when the speed of the whole vehicle drops rapidly, the speed of the second motor will also drop sharply with the speed of the whole vehicle. The second motor is also rigidly connected to the outer ring of the clutch, so the speed of the outer ring of the clutch drops rapidly and is less than the speed of the inner ring of the clutch, which does not meet the normal disengagement condition, and can be considered to meet the emergency disengagement condition. For example, when the vehicle is in an emergency braking state or the anti-lock braking state is activated, the vehicle speed will drop rapidly, which will cause the speed of the outer ring of the clutch to be less than the speed of the inner ring of the clutch. Therefore, the above situation can be considered that the vehicle is in an emergency disengagement condition.

[0046] Therefore, the operating condition information includes the speed change rate of the second motor. When the speed change rate of the second motor is a negative value and is less than the threshold change rate, for example, the threshold change rate may be -1000rpm / s, it means that the vehicle speed is rapidly decreasing, for example, the vehicle is in an emergency braking or anti-lock braking state. It is determined that the operating condition of this gear shifting is an emergency gear shifting condition, and there is a possibility of gear shifting failure.

[0047] It should be noted that the disclosed embodiment does not impose any specific restrictions on the value of the threshold change rate. The above is only an example and can be set according to actual needs. In addition, the disclosed embodiment does not impose any restrictions on the specific type of operating condition information. The above is only an optional implementation method, the purpose of which is to determine whether the current vehicle operating condition meets the emergency disengagement condition. Only under the emergency disengagement condition may the vehicle fail to disengage. In other implementations, other parameters can also be used for judgment, and the disclosed embodiment does not limit this.

[0048] In some embodiments, the operating condition information includes a speed change rate of the second motor, a brake signal, and a vehicle speed; determining that a shift-out failure is satisfied based on the vehicle operating condition information includes:

[0049] Based on the fact that the speed change rate of the second motor is less than the threshold change rate, the brake signal is maintained until the vehicle stops, and the vehicle speed is 0, it is determined that the vehicle has met the gear shift failure condition.

[0050] Exemplarily, the operating condition information includes the speed change rate of the second motor, the brake signal and the vehicle speed. When the speed change rate of the second motor is less than the threshold change rate, it means that the vehicle is in emergency braking or the anti-lock function is triggered due to icy and snowy roads, and the speed of the second motor and the vehicle is rapidly reduced. The brake signal should be monitored in real time, and the brake signal should be maintained until the vehicle stops, and there should be no interruption, that is, the brake should not be released in the middle. If the brake is released, the vehicle is not out of gear or the gear is successfully out of gear. In addition, it is necessary to obtain the vehicle speed signal until the vehicle speed is 0, which means that the vehicle has stopped. Based on the vehicle's operating condition information, when the above three conditions are met, it is determined that the vehicle meets the gear disengagement failure, and intervention can be performed to solve the problem of gear disengagement failure. If any condition is not met, it does not meet the gear disengagement failure.

[0051] The following is an explanation of the failure of the gear shifting using the emergency brake and anti-lock function. When the vehicle is in an emergency brake state, the speed of the second motor drops sharply along with the speed of the whole vehicle. Before the first motor has finished adjusting the torque, the speed of the whole vehicle and the speed of the second motor have already dropped to 0 quickly. The shift mechanism performs the gear shifting action, but the wedge does not fall off because the speed difference and torque conditions do not meet the requirements for falling off. The clutch is still in the engaged state, and the gear shifting fails. On icy and snowy roads, the anti-lock function is easily triggered due to vehicle skidding, causing the speed of the second motor and the wheel end to lock and quickly drop to 0, while the first motor does not have time to reorganize the speed and reduce the torque. Similarly, when the vehicle stops, the clutch is still in the engaged state, and the gear shifting fails.

[0052] Therefore, based on the operating condition information provided by the embodiment of the present disclosure, it is possible to determine whether the clutch of the vehicle fails to disengage. If the requirements are met, it is determined that the disengagement has failed, otherwise the disengagement is successful. It should be noted that the embodiment of the present disclosure does not limit the specific type of operating condition information. The above is only an optional implementation method, the purpose of which is to determine whether the vehicle fails to disengage under emergency disengagement conditions. In other implementations, other parameters can also be used for judgment, and the embodiment of the present disclosure does not limit this.

[0053] In some embodiments, disabling the driving function of the vehicle includes:

[0054] The forward torque of the first motor, the forward torque and the reverse torque of the second motor, and the engine are disabled.

[0055] Exemplarily, after the gear failure, the inner ring and outer ring of the clutch are still in a combined state, and the inner ring of the clutch is rigidly connected to the first motor and the engine, and the outer ring of the clutch is rigidly connected to the second motor and the whole vehicle (wheel). If the engine is started again when the vehicle is stationary, the inner ring of the clutch will rotate with the engine, but the vehicle is stationary, the outer ring speed of the clutch is 0, and the inner ring and outer ring speeds of the clutch do not match, which will cause damage to the vehicle hardware. In other embodiments, after the gear failure, if the driver starts in reverse gear, the wheel end and the second motor are reversed, the outer ring speed of the clutch increases with the second motor, and the inner ring of the clutch follows the engine speed to 0, thus, the inner ring and outer ring speeds of the clutch do not match, resulting in damage to the vehicle hardware. Based on this, it is necessary to disable the driving function of the vehicle, for example, disable the forward torque of the first motor, the forward torque and reverse torque of the second motor, and the engine to prohibit the vehicle from moving, including driving forward and reversing, and prohibit the engine from starting, to avoid the above-mentioned situation that causes damage to the vehicle hardware.

[0056] In some embodiments, disabling the forward torque of the first motor, the forward torque and the reverse torque of the second motor, and the engine includes:

[0057] The forward torque output by the first motor and the second motor is controlled to be 0, the reverse gear is prohibited from being enabled, and the engine is prohibited from being started.

[0058] Specifically, the forward torque output by the first motor and the second motor controls the vehicle to move forward, thereby controlling the forward torque output by the first motor and the second motor to be 0 to limit the vehicle from moving forward. For example, the transmission control unit of the vehicle sends a control signal to the first motor and the second motor to control the forward torque output by them to be 0. The vehicle is prohibited from reversing, and the driver can be restricted from engaging the reverse gear by prohibiting the activation of the reverse gear, thereby preventing the vehicle from moving backward. For example, the transmission controller of the vehicle sends a signal prohibiting the activation of the reverse gear to the engine control unit, and the engine control unit interacts with the vehicle controller through the CAN (Controller Area Network) bus, and prompts the driver through the dashboard in the cockpit that the reverse gear is unavailable, so as to prevent the driver from starting the reverse gear. In other embodiments, the vehicle can also be prohibited from reversing by directly limiting the reverse torque output by the second motor. The reversing of the vehicle is controlled by the second motor, so the transmission control unit of the vehicle can also send a control signal to the second motor to control the reverse torque output by it to be 0. The disclosed embodiment does not limit the specific method. The purpose of prompting the driver to start the reverse gear through the instrument panel is also to disable the second motor from outputting reverse torque. The two methods can also be combined. To prohibit the engine from starting, the vehicle's transmission control unit can send a control signal to the engine control unit, and then the engine control unit controls the engine to prohibit starting. Based on the above operation, a series of driving components of the vehicle are disabled to avoid damage to the clutch hardware caused by starting.

[0059] It should be noted that the purpose of the above operation is to prevent the vehicle from failing to disengage due to the vehicle's drive components starting up after the clutch fails, causing some components in the vehicle to fail to cooperate and cause hardware damage. Therefore, the drive components that may cause failures are disabled. The above disabling method is an optional implementation provided by the embodiment of the present disclosure, and other methods can also be used for control. The embodiment of the present disclosure does not limit this, and the above is only an example.

[0060] In some embodiments, controlling the first motor to reverse to disengage the clutch includes:

[0061] The first motor is controlled to reverse at a preset speed; wherein the preset speed is less than or equal to 100 rpm / s.

[0062] For example, after the gear shift fails, the wedge block does not fall off normally and is still located in the inner ring groove, causing the clutch to remain in the engaged state. At this time, the first motor can be controlled to reverse at a preset speed. The first motor drives the engine to reverse, ensuring that the inner ring of the clutch reverses a small angle, such as along Figure 2The wedge is lifted by the edge of the inner ring groove by rotating counterclockwise, and the wedge is separated from the inner ring groove by the force of the spring, and the inner ring is separated from the outer ring. The preset speed is a relatively small speed, for example, less than or equal to 100rpm / s. The preset speed does not need to be too large. If the preset speed of the first motor is too large, the engine will reverse too fast, resulting in a risk of damage to the engine. According to the speed ratio between the engine and the first motor, the engine speed is about half of the speed of the first motor. When the speed of the first motor is relatively small, the engine speed is even smaller. At this time, the engine has no torque output and no fuel supply. There is no risk of damage to the engine even if it reverses.

[0063] It should be noted that the preset speed may be 100 rpm / s, or a range such as 80-100 rpm / s, or other speeds that will not damage the engine. The embodiments of the present disclosure are only used as examples.

[0064] In some embodiments, it also includes:

[0065] After the first motor is controlled to reverse at a preset speed for a preset time period, the vehicle driving function is unlocked.

[0066] For example, the first motor is controlled to reverse at a preset speed until it lasts for a preset time, and then the first motor is controlled to stop reversing. For example, the preset time is 1s, and the preset speed is 100rpm / s. Then the first motor reverses at 100rpm / s for 1s and then stops running. At this time, the wedge falls off, the inner and outer rings of the clutch are separated, and the gear is disengaged successfully. In order not to affect the subsequent use of the vehicle, the vehicle driving function is disabled, that is, the restrictions on the vehicle's forward driving, reverse and engine are lifted.

[0067] Specifically, the restrictions on the vehicle drive components can be lifted according to the corresponding operations during the disabling. For example, the forward torque of the first motor, the forward torque and reverse torque of the second motor, and the disabling of the engine can be lifted. Alternatively, the restrictions on the forward torque output of the first motor and the second motor can be lifted, the use of the reverse gear position can be restored, and the restrictions on the engine can be restored. Specifically, it can be set according to the corresponding operations during the disabling, and the embodiments of the present disclosure do not impose any restrictions on this. The main purpose is to restore various driving functions of the vehicle to avoid affecting the normal driving of subsequent vehicles and improve the user experience.

[0068] In some embodiments, the total real-time duration of the processing strategy after a gear shift failure is controlled within 3 seconds to complete the wedge block falling off purpose, which has little impact on the driver's driving the vehicle again in a short period of time. Considering the frequency of emergency gear shifting conditions, this is a protection strategy under special conditions and occurs less frequently. Therefore, this strategy will not affect the drivability of the vehicle.

[0069] The present disclosure also provides a vehicle power system control device, Figure 3 A schematic diagram of a vehicle power system control device provided by an embodiment of the present disclosure is shown in FIG. Figure 3 The vehicle power system includes a first motor, a second motor, an engine and a clutch. The inner ring of the clutch is drivingly connected to the first motor and the engine, and the outer ring of the clutch is drivingly connected to the first motor. The first motor is used to drive the engine, and the second motor is used to drive the entire vehicle. The control device includes: an operating condition information acquisition module 21 and an execution module 22.

[0070] The working condition information acquisition module 21 is used to acquire the working condition information of the vehicle. The execution module 22 is used to determine that the emergency gear shifting working condition is met based on the working condition information of the vehicle, and the gear shifting failure is met, and after disabling the driving function of the vehicle, the first motor is controlled to reverse to disengage the clutch.

[0071] Figure 4 A schematic diagram of the structure of an electronic device provided by an embodiment of the present disclosure, see Figure 4 The electronic device includes a processor 301 and a memory 302. The processor 301 executes the steps of any vehicle power system control method in the above embodiments by calling the program or instruction stored in the memory 302.

[0072] Specifically, Figure 4 As shown, the electronic device may include at least one processor 301, at least one memory 302, and at least one communication interface 303. The various components in the electronic device are coupled together via a bus system 304. The communication interface 303 is used to transmit information with external devices. It is understood that the bus system 304 is used to achieve connection and communication between these components. In addition to the data bus, the bus system 304 also includes a power bus, a control bus, and a status signal bus. However, for the sake of clarity, the bus system 304 is not described in detail. Figure 3 Various buses are labeled as bus system 304 .

[0073] It is understood that the memory 302 in this embodiment may be a volatile memory or a non-volatile memory, or may include both volatile and non-volatile memories. In some embodiments, the memory 302 stores the following elements: executable units or data structures, or their subsets, or their extended sets of operating systems and applications. In the embodiment of the present disclosure, the processor 301 executes the steps of each embodiment of the vehicle power system control method provided in the embodiment of the present disclosure by calling the program or instruction stored in the memory 302.

[0074] The method provided in the embodiment of the present disclosure can be applied to the processor 301, or implemented by the processor 301. The processor 301 can be an integrated circuit chip with signal processing capabilities. In the implementation process, each step of the above method can be completed by an integrated logic circuit of hardware in the processor 301 or an instruction in the form of software. The above-mentioned processor 301 can be a general-purpose processor, a digital signal processor (Digital Signal Processor, DSP), an application-specific integrated circuit (Application Specific Integrated Circuit, ASIC), a field programmable gate array (Field Programmable Gate Array, FPGA) or other programmable logic devices, discrete gates or transistor logic devices, discrete hardware components. The general-purpose processor can be a microprocessor or the processor can also be any conventional processor, etc.

[0075] The steps of the method provided in the embodiment of the present disclosure can be directly embodied as being executed by a hardware decoding processor, or can be executed by a combination of hardware and software units in the decoding processor. The software unit can be located in a mature storage medium in the art such as a random access memory, a flash memory, a read-only memory, a programmable read-only memory, or an electrically erasable programmable memory, a register, etc. The storage medium is located in the memory 302, and the processor 301 reads the information in the memory 302 and completes the steps of the method in combination with its hardware.

[0076] The embodiments of the present disclosure also provide a computer-readable storage medium, which stores a program or instruction, and the program or instruction enables a computer to execute the steps of any vehicle power system control method in the above method embodiments.

[0077] The computer-readable storage medium provided by the embodiments of the present disclosure can execute the steps of any one of the methods in the above-mentioned vehicle power system control method embodiments, and thus can also achieve the same technical effects as the above-mentioned vehicle power system control method.

[0078] In addition to the above-mentioned method and electronic device, an embodiment of the present application may also be a computer program product, which includes computer program instructions, and when the computer program instructions are executed by a processor, the processor executes the method steps of various embodiments of the present application.

[0079] The computer program product may be written in any combination of one or more programming languages ​​to write program code for performing the operations of the embodiments of the present invention, including object-oriented programming languages ​​such as Java, C++, etc., and conventional procedural programming languages ​​such as "C" or similar programming languages. The program code may be executed entirely on the user computing device, partially on the user device, as a separate software package, partially on the user computing device and partially on a remote computing device, or entirely on a remote computing device or server.

[0080] In addition, the embodiments of the present application may also be a computer-readable storage medium on which computer program instructions are stored. When the computer program instructions are executed by the processor 301, the processor 301 executes the method steps of various embodiments of the present application.

[0081] Computer readable storage media can adopt any combination of one or more readable media. The readable medium can be a readable signal medium or a readable storage medium. The readable storage medium can include, for example, but is not limited to, a system, device or device of electricity, magnetism, light, electromagnetic, infrared, or semiconductor, or any combination of the above. More specific examples (non-exhaustive list) of readable storage media include: an electrical connection with one or more wires, a portable disk, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disk read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the above.

[0082] It should be noted that, in this article, relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0083] The above description is only a specific embodiment of the present disclosure, so that those skilled in the art can understand or implement the present disclosure. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present disclosure. Therefore, the present disclosure will not be limited to the embodiments described herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A vehicle power system control method, characterized in that: The vehicle power system comprises a first motor, a second motor, an engine and a clutch, the inner ring of the clutch is drivingly connected to the first motor and the engine, the outer ring of the clutch is drivingly connected to the first motor, the first motor is used to drive the engine, and the second motor is used to drive the entire vehicle; The control method comprises: Obtain vehicle operating condition information; Based on the working condition information of the vehicle, it is determined that an emergency gear-shifting working condition is met, and gear-shifting failure is met, after disabling the driving function of the vehicle, the first motor is controlled to reverse to disengage the clutch.

2. The vehicle power system control method according to claim 1, characterized in that: The operating condition information includes a speed change rate of the second motor; and determining that an emergency shift-out operating condition is met based on the operating condition information of the vehicle includes: Based on the fact that the speed change rate of the second motor is less than a threshold change rate, it is determined that the vehicle meets the emergency gear-shifting condition.

3. The vehicle power system control method according to claim 1, characterized in that: The operating condition information includes a speed change rate of the second motor, a brake signal, and a vehicle speed; and determining that a gear shift failure is satisfied based on the operating condition information of the vehicle includes: Based on the fact that the speed change rate of the second motor is less than a threshold change rate, the brake signal is maintained until the vehicle stops, and the vehicle speed is 0, it is determined that the vehicle meets the gear shift failure condition.

4. The vehicle power system control method according to claim 1, characterized in that: The driving function of the disabled vehicle includes: The forward torque of the first motor, the forward torque and the reverse torque of the second motor, and the engine are disabled.

5. The vehicle power system control method according to claim 4, characterized in that: The disabling of the forward torque of the first motor, the forward torque and the reverse torque of the second motor, and the engine comprises: The forward torque output by the first motor and the second motor is controlled to be 0, the reverse gear is prohibited from being enabled, and the engine is prohibited from being started.

6. The vehicle power system control method according to claim 1, characterized in that: The controlling the first motor to reverse to disengage the clutch comprises: The first motor is controlled to reverse at a preset speed; wherein the preset speed is less than or equal to 100 rpm / s.

7. The vehicle power system control method according to claim 6, characterized in that: Also includes: After the first motor is controlled to reverse at a preset speed for a preset time period, the vehicle driving function is unlocked.

8. A vehicle power system control device, characterized in that: The vehicle power system comprises a first motor, a second motor, an engine and a clutch, the inner ring of the clutch is drivingly connected to the first motor and the engine, the outer ring of the clutch is drivingly connected to the first motor, the first motor is used to drive the engine, and the second motor is used to drive the entire vehicle; The control device comprises: A working condition information acquisition module, used to acquire the working condition information of the vehicle; The execution module is used to determine that an emergency gear-shifting condition is met based on the working condition information of the vehicle, and after the gear-shifting fails and the driving function of the vehicle is disabled, control the first motor to reverse to disengage the clutch.

9. A computer-readable storage medium, characterized in that: The storage medium stores a computer program, which, when executed by a processor, implements the steps of the vehicle power system control method according to any one of claims 1 to 7.

10. An electronic device, characterized in that: The method comprises a memory and a processor, wherein the memory stores a computer program, and the processor implements the steps of the vehicle power system control method according to any one of claims 1 to 7 when executing the computer program.

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