Vehicle control method and device and vehicle

Abstract

The invention discloses a vehicle control method and device and a vehicle. The method comprises the steps that working data of an oil pump in a vehicle are collected; determining the working state of a first target oil pump in the oil pumps based on the working data; determining control data of the vehicle based on the working state; and according to the adjustment rate in the control data, the upper limit value of the driving torque of the vehicle is adjusted from the initial torque value to a target torque value, the upper limit value of the driving torque is used for controlling the driving state of the vehicle, and the target torque value is smaller than the initial torque value. The technical problem that safety control cannot be carried out on the vehicle is solved.

Description

Technical Field

[0001] The present invention relates to the technical field of vehicles, and in particular, to a control method, device and vehicle for a vehicle. Background Art

[0002] Currently, in the field of vehicles, the steering system of a vehicle can adopt an oil pump system, and power for steering assistance can be provided to the vehicle through this oil pump system.

[0003] In the related art, usually, a high-pressure oil pump in the oil pump system provides power for assistance to the vehicle. When the high-pressure oil pump fails, a low-pressure oil pump in the oil pump system takes over to become the power for steering assistance. However, after the high-pressure oil pump fails, only the low-pressure oil pump is used to meet the emergency steering requirements. In addition, the low-pressure oil pump cannot support the power for long-term steering assistance, and there is a technical problem that the vehicle cannot be safely controlled.

[0004] In view of the above technical problem that the vehicle cannot be safely controlled, no effective solution has been proposed yet. Summary of the Invention

[0005] Embodiments of the present invention provide a control method, device and vehicle for a vehicle, so as to at least solve the technical problem that the vehicle cannot be safely controlled.

[0006] According to one aspect of the embodiments of the present invention, a control method for a vehicle is provided, including: collecting working data of an oil pump in the vehicle; determining the working state of a first target oil pump in the oil pump based on the working data; determining control data of the vehicle based on the working state; and adjusting the upper limit value of the driving torque of the vehicle from an initial torque value to a target torque value according to the adjustment rate in the control data, where the upper limit value of the driving torque is used to control the driving state of the vehicle, and the target torque value is less than the initial torque value.

[0007] Optionally, determining the control data of the vehicle based on the working state includes: obtaining the driving data of the vehicle; determining the driving speed and driving state of the vehicle based on the driving data; and determining the control data based on the driving state, driving speed and working state.

[0008] Optionally, determining the control data based on the driving state, driving speed and working state includes: in response to the driving state being a normal driving state, the driving speed being greater than a target threshold, and the working state being an abnormal working state, determining the control duration for the vehicle's vehicle control system to control the first target oil pump; and determining the control data based on the control duration.

[0009] Optionally, based on the control duration, control data is determined, including: in response to the control duration being within a first duration, based on the working data, determining the working state of a second target oil pump in the oil pump, where the working voltage of the second target oil pump is less than the working voltage of a first target oil pump; and based on the working state of the second target oil pump, determining the control data.

[0010] Optionally, based on the working state of the second target oil pump, control data is determined, including: in response to the working state of the second target oil pump being a normal working state, determining an adjustment range for the upper limit value, where the adjustment range is determined based on the standard torque of the vehicle; determining a first adjustment rate based on the initial torque value and the upper limit torque value of the adjustment range, and determining a second adjustment rate based on the upper limit torque value and the lower limit torque value of the adjustment range, and determining a third adjustment rate based on the lower limit torque value and the target torque value; and based on the first adjustment rate, the second adjustment rate, and the third adjustment rate, determining the control data as: controlling the upper limit value at the first adjustment rate to be adjusted from the initial torque value to the upper limit torque value within a second duration; in response to the upper limit value being adjusted to the upper limit torque value, controlling the adjusted upper limit value at the second adjustment rate to drop from the upper limit torque value to the lower limit torque value within a third duration; and in response to the upper limit value dropping to the lower limit torque value, controlling the adjusted upper limit value at the third adjustment rate to drop from the lower limit torque value to the target torque value within a fourth duration, where the second duration and the third duration are different, and the third duration and the fourth duration are different.

[0011] Optionally, based on the working state of the second target oil pump, control data is determined, including: in response to the working state of the second target oil pump being an abnormal working state, determining a fourth adjustment rate based on the initial torque value and the target torque value of the upper limit value; and based on the fourth adjustment rate, determining the control data as: controlling the upper limit value to drop from the initial torque value to the target torque value within a fifth duration at the fourth adjustment rate.

[0012] Optionally, the method further includes: in response to the working state of the first target oil pump being an abnormal state, outputting a prompt message, where the prompt message is used to prompt that the vehicle needs to enter a parking state.

[0013] According to another aspect of the embodiments of the present invention, a control device for a vehicle is further provided, including: an acquisition unit for acquiring the working data of an oil pump in the vehicle; a first determination unit for determining the working state of a first target oil pump in the oil pump based on the working data; a second determination unit for determining the control data of the vehicle based on the working state; and an adjustment unit for adjusting the upper limit value of the driving torque of the vehicle from an initial torque value to a target torque value at the adjustment rate in the control data, where the upper limit value of the driving torque is used to control the driving state of the vehicle, and the target torque value is less than the initial torque value.

[0014] According to another aspect of the embodiments of the present invention, there is also provided a computer-readable storage medium. The computer-readable storage medium includes a stored program, wherein when the program runs, it controls the device where the computer-readable storage medium is located to execute the vehicle control method according to the embodiments of the present invention.

[0015] According to another aspect of the embodiments of the present invention, there is also provided a processor. The processor is used to run a program, wherein when the program runs, it executes the vehicle control method according to the embodiments of the present invention.

[0016] According to another aspect of the embodiments of the present invention, there is also provided a computer program product. The computer program product includes a computer program, and when the computer program is executed by a processor, it implements the vehicle control method according to the above embodiments of the present invention.

[0017] In the embodiments of the present invention, the working data of the oil pump in the vehicle can be collected; based on the working data, the working state of the first target oil pump in the oil pump can be determined; based on the working state, the control data of the vehicle can be determined; and according to the adjustment rate in the control data, the upper limit value of the driving torque of the vehicle can be adjusted from the initial torque value to the target torque value. That is, in the embodiments of the present invention, the working state of the first target oil pump (such as a high-pressure oil pump) in the vehicle is determined, and based on this working state, the corresponding control data of the vehicle can be determined. Based on this control data, the upper limit value of the driving torque of the vehicle can be controlled to decrease uniformly from the initial torque value to the target torque value to ensure that the vehicle decelerates smoothly to a stop, thereby achieving the technical effect of safely controlling the vehicle and solving the technical problem of being unable to safely control the vehicle. Description of the Drawings

[0018] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of the present invention. The schematic embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation to the present invention. In the drawings:

[0019] Figure 1 is a flowchart of a vehicle control method according to an embodiment of the present invention;

[0020] Figure 2 is a flowchart of a vehicle drive control method under high-pressure failure of a dual-source oil pump according to an embodiment of the present invention;

[0021] Figure 3 is a flowchart of a drive torque limit control method according to an embodiment of the present invention;

[0022] Figure 4 is a schematic diagram of a vehicle control device according to an embodiment of the present invention. Detailed Embodiments

[0023] To enable those skilled in the art to better understand the solution of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0024] It should be noted that the terms "first", "second", etc. in the description and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged under appropriate circumstances so that the embodiments of the present invention described here can be implemented in an order different from those illustrated or described here. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or device that includes a series of steps or units does not necessarily have to be limited to those steps or units clearly listed, but may include other steps or units not clearly listed or inherent to these processes, methods, products, or devices.

[0025] According to an embodiment of the present invention, an embodiment of a control method for a vehicle is provided. It should be noted that the steps shown in the flowchart of the accompanying drawings can be executed in a computer system such as a set of computer-executable instructions, and although the logical order is shown in the flowchart, in some cases, the steps shown or described can be executed in an order different from that here.

[0026] Figure 1 is a flowchart of a control method for a vehicle according to an embodiment of the present invention. As Figure 1 shown, the method may include the following steps:

[0027] Step S102, collect the working data of the oil pump in the vehicle.

[0028] In the technical solution provided in step S102 of the present invention, the above vehicle may be a new energy vehicle, for example, a pure electric vehicle or a hybrid vehicle. The above oil pump may be a dual-source oil pump, which may include a high-pressure oil pump and a low-pressure oil pump. The above working data may be status information, which can be used to characterize the working state (i.e., the operating state) of the oil pump, and can also be used to determine data such as the output pressure, working current, and temperature of the oil pump. The working states of the dual-source oil pump may include the normal working state of the high-pressure oil pump, the normal non-working state of the high-pressure oil pump, the fault state of the high-pressure oil pump, the normal working state of the low-pressure oil pump, the normal non-working state of the low-pressure oil pump, the fault state of the low-pressure oil pump, etc. It should be noted that only examples are given here, and the type of the working data is not specifically limited.

[0029] In this embodiment, the above high-pressure oil pump is a high-voltage oil pump, and the operating voltage (or power supply voltage) required during operation can meet the first voltage threshold. For example, it can be an oil pump with an operating voltage greater than 660 volts or equal to 320 volts. The above low-pressure oil pump is a low-voltage oil pump, which can be an oil pump whose operating voltage required during operation meets the second voltage threshold. For example, it can be an oil pump with an operating voltage of 24 volts. It should be noted that only examples are given here, and the magnitudes of the first voltage threshold and the second voltage threshold are not specifically limited.

[0030] Optionally, the high-pressure oil pump and the low-pressure oil pump in the new energy vehicle are powered by different voltage levels. The high-pressure oil pump is powered by a high-voltage electrical system to meet the demand for high-power operation; the low-pressure oil pump is powered by a low-voltage system, which is both economical and safe and suitable for smaller power requirements.

[0031] In this embodiment, the working data of the oil pump in the vehicle can be collected in real time to achieve the purpose of obtaining the status information of the dual-source oil pump in the vehicle in real time, so as to provide an adjustment basis for the subsequent adjustment of the upper limit value of the driving torque of the vehicle.

[0032] Optionally, the above working data can be obtained in real time through a pressure sensor, a temperature sensor, and a current sensor.

[0033] Optionally, through the electronic control unit of the vehicle, the data from multiple sensors can be integrated to obtain the working data, and the above working data can be transmitted and processed through the in-vehicle network, where the in-vehicle network can be a Controller Area Network (CAN) bus.

[0034] For example, the working data can be obtained from the vehicle's data bus through the in-vehicle network protocol.

[0035] It should be noted that the above-mentioned method for obtaining the working data is only an example and is not specifically limited here. As long as it is a method for obtaining the working data of the oil pump in the vehicle, it is within the protection scope of the embodiments of the present invention.

[0036] Step S104, based on the working data, determine the working status of the first target oil pump in the oil pump.

[0037] In the technical solution provided in step S104 of the present invention, the above first target oil pump can be the high-pressure oil pump in the oil pump. The above working status can include the normal working status, non-working status, and fault status (i.e., abnormal working status) of the high-pressure oil pump.

[0038] In this embodiment, after collecting the working data of the oil pump in the vehicle, the working state of the first target oil pump in the oil pump can be determined based on the working data, so as to judge whether the high-pressure oil pump is working properly, working or malfunctioning.

[0039] Optionally, when the high-pressure oil pump is in a normal working state, it can be determined that the high-pressure oil pump is stably providing the required oil pressure and flow rate to support the normal operation of the vehicle. When the high-pressure oil pump is in a non-working state, it can indicate that although the high-pressure oil pump has no fault, it does not need to work in the current vehicle state. For example, when driving at a low speed or in a parked state. When the high-pressure oil pump is in an abnormal working state, it can be determined that the high-pressure oil pump has a fault at this time and cannot normally provide oil pressure and flow rate. In this case of abnormal working state, it will directly affect the effect of vehicle steering assistance and pose a safety risk.

[0040] Step S106, determine the control data of the vehicle based on the working state.

[0041] In the technical solution provided in step S106 of the present invention above, after determining the working state of the first target oil pump in the oil pump based on the working data, the control data of the vehicle can be determined based on the working state. Among them, the above control data can be used to guide how to adjust the upper limit value of the driving torque of the vehicle, can be used to ensure the safe driving of the vehicle, and can include the adjustment range and adjustment rate for adjusting the upper limit value of the driving torque of the vehicle. For example, the above control data can be: control the upper limit value of the driving torque of the vehicle to be 100 Newton meters (abbreviated as Nm), or control the upper limit value of the driving torque of the vehicle, at a certain adjustment rate, for example, decreasing by 1 Nm per second, and adjusting from 100 Nm to 0. It should be noted that only examples are given here, and the content of the control data is not specifically limited.

[0042] In this embodiment, according to the working state of the high-pressure oil pump, the control data of the vehicle can be determined, and further the vehicle can be controlled according to the control data, so as to ensure that when the high-pressure oil pump fails, the upper limit value of the driving torque is adjusted, thereby improving the safety and reliability of the vehicle, and at the same time maintaining the driving experience and vehicle performance.

[0043] Optionally, if the working state of the first target oil pump is an abnormal working state, the control data corresponding to the vehicle in this abnormal working state can be determined. The above control data can be used to indicate a series of driving torque limit strategies. According to the control data, it can be ensured that the vehicle can safely decelerate and finally stop with the assistance of the low-pressure oil pump. At the same time, the sound and light alarm system on the vehicle dashboard can be activated to remind the driver to operate carefully and find a safe place to park.

[0044] Optionally, if the operating state of the first target oil pump is the normal operating state, the drive torque limit strategy will not be triggered, but the existing torque output will be maintained to maintain the normal driving state. That is, when the high-pressure oil pump is not faulty, there is no need to further control the vehicle, and the performance of the vehicle will not be affected. The driver can continue to operate the vehicle in the expected driving manner. In addition, no warning message will be displayed on the vehicle dashboard.

[0045] Step S108: Adjust the upper limit value of the drive torque of the vehicle from the initial torque value to the target torque value according to the adjustment rate in the control data.

[0046] In the technical solution provided in step S108 of the present invention above, the above adjustment rate can also be a decreasing rate, which can be used to control the adjustment speed of the upper limit value of the drive torque in the vehicle. Through this adjustment rate, the upper limit value of the drive torque of the vehicle can be controlled to decrease smoothly. The above initial torque value can be the initial upper limit value of the output drive torque of the vehicle when the high-pressure oil pump does not fail. For example, the initial torque value of 100% is the drive torque output level when the vehicle is driving normally, and the initial torque value can meet the requirements of vehicle acceleration, climbing, etc. The above upper limit value of the drive torque can be used to control the driving state of the vehicle. The above target torque value can be a preset value, which can be less than the initial torque value. For example, it can be 0.

[0047] In this embodiment, based on the operating state, the control data of the vehicle can be determined. The control data can include the adjustment rate and adjustment range of the upper limit value (such as from the initial torque value to the target torque value). Further, according to the adjustment rate in the control data, the upper limit value of the drive torque of the vehicle can be adjusted from the initial torque value to the target torque value. By uniformly controlling the upper limit value of the control torque of the vehicle, the purpose of uniformly reducing the driving speed of the vehicle can be achieved.

[0048] For example, when the vehicle is a pure electric vehicle, since the upper limit value of the drive torque in the pure electric vehicle is determined based on the engine. Therefore, the upper limit value of the drive torque corresponding to the engine in the vehicle can be determined in advance. Based on the drive torque of the engine, the above initial torque value can be determined as 100% of the drive torque of the engine. Assuming that the adjustment rate in the control data is to decrease by 1 Nm per second, the upper limit value of the drive torque of the vehicle can be adjusted from 100% of the drive torque of the engine to the target torque value (such as 0) according to this adjustment rate. When driving the vehicle, the driving state of the vehicle can be controlled according to the upper limit value of the drive torque. Since this upper limit value decreases uniformly, the vehicle speed can be controlled to decrease uniformly to 0.

[0049] In this embodiment, based on the working data of the oil pump, the working state of the first target oil pump can be determined. If the working state of the first target oil pump is an abnormal working state, the control data of the vehicle can be further determined. Through this control data, the adjustment rate for adjusting the upper limit value of the driving torque of the vehicle can be determined. According to this adjustment rate, the upper limit value can be controlled to decrease uniformly from the initial torque value to the target torque value. Through the above adjustment process, the vehicle can be controlled to gradually decelerate until it stops on the premise of ensuring the safety of the driver, thereby avoiding the risk of the vehicle getting out of control or the power steering failing after a high-pressure oil pump failure, and further improving the safety of the new energy vehicle during the driving process.

[0050] In an embodiment of the present invention, by restricting the upper limit value of the driving torque and gradually lowering the upper limit value from the initial torque value to a preset target torque value, the safe driving and docking of the vehicle are ensured, the purpose of controlling the vehicle to run smoothly is achieved, the technical problem of being unable to safely control the vehicle is solved, and the technical effect of safely controlling the vehicle is realized.

[0051] In the above steps S102 to S108 of the present invention, the working data of the oil pump in the vehicle can be collected; based on the working data, the working state of the first target oil pump in the oil pump can be determined; based on the working state, the control data of the vehicle can be determined; and according to the adjustment rate in the control data, the upper limit value of the driving torque of the vehicle can be adjusted from the initial torque value to the target torque value. That is, in an embodiment of the present invention, the working state of the first target oil pump (such as a high-pressure oil pump) in the vehicle is determined. Based on this working state, the corresponding control data of the vehicle can be determined. Based on this control data, the upper limit value of the driving torque of the vehicle can be controlled to decrease uniformly from the initial torque value to the target torque value to ensure that the vehicle decelerates smoothly to a stop, thereby realizing the technical effect of safely controlling the vehicle and solving the technical problem of being unable to safely control the vehicle.

[0052] The above method of this embodiment will be further introduced below.

[0053] As an alternative embodiment, in step S106, based on the working state, determining the control data of the vehicle includes: obtaining the driving data of the vehicle; based on the driving data, determining the driving speed and the driving state of the vehicle; and based on the driving state, the driving speed, and the working state, determining the control data.

[0054] In this embodiment, if it is necessary to determine the control data of the vehicle based on the working state, the driving data of the vehicle can be obtained, such as vehicle speed, acceleration, steering angle, braking state, power state, etc.; based on the driving data, the driving speed and the driving state of the vehicle can be determined; and based on the driving state, the driving speed, and the working state, the control data can be comprehensively determined.

[0055] Optionally, the driving data of the above vehicle can be data obtained through a vehicle speed sensor, an acceleration sensor, a steering angle sensor, etc., and can include data such as the driving speed and driving acceleration of the vehicle. It should be noted that this is only an example here, and the acquisition method and type of the driving data are not specifically limited here.

[0056] Optionally, the driving state of the above vehicle can include a normal driving state and an abnormal driving state. For example, when the driving data of the vehicle is that the vehicle is in a normal steering state, it can be determined that the driving state of the vehicle is a normal driving state. When the driving data of the vehicle is that the vehicle is in an emergency braking state, it can be determined that the driving state of the vehicle is an abnormal driving state. The specific judgment method of the above driving state is only an example here and is not specifically limited here.

[0057] For example, by acquiring the driving data of the vehicle, based on the driving data, the driving speed of the vehicle can be determined, and based on the driving data, it can be determined whether the driving state of the vehicle is in a normal driving state or an abnormal driving state. Further, based on the driving state, driving speed and working state of the vehicle, the control data corresponding to the vehicle can be determined.

[0058] In the embodiment of the present invention, by acquiring the driving data of the vehicle, based on the driving data, the driving speed of the vehicle can be determined, and based on the driving data, it can be determined whether the driving state of the vehicle is in a normal driving state or an abnormal driving state. Further, based on the driving state, driving speed and working state of the vehicle, the control data corresponding to the vehicle can be determined, providing a basis for adjusting the upper limit value of the subsequent driving torque.

[0059] As an optional embodiment, based on the driving state, driving speed and working state, determining the control data includes: in response to the driving state being a normal driving state, the driving speed being greater than the target threshold, and the working state being an abnormal working state, determining the control duration of the vehicle's vehicle control system for controlling the first target oil pump; and determining the control data based on the control duration.

[0060] In this embodiment, after determining the driving speed and driving state, it is determined whether the driving state is a normal driving state, whether the driving speed is greater than the target threshold, and whether the working state of the high-pressure oil pump is an abnormal working state. If the driving state is a normal driving state, the driving speed is greater than the target threshold, and the working state of the high-pressure oil pump is an abnormal working state, the control duration for the vehicle's integrated vehicle control system to control the first target oil pump can be determined; the control data can be determined based on the control duration. Among them, the above-mentioned integrated vehicle control system can be used to integrate the control functions of multiple subsystems such as the power system, chassis system, and body system in the vehicle, and can achieve the optimization management of the overall vehicle performance. For example, when the vehicle driving state and the oil pump working state change, the integrated vehicle control system can generate control data and make driving decisions based on the determined control duration to ensure the safety and controllability of the vehicle under different driving conditions. The above-mentioned target threshold can be a pre-set calibration value, a value determined according to experiments or tests. For example, it can be 60 kilometers per hour (km / h). It should be noted that this is only an example here, and there is no specific limitation on the size of the target threshold. The above-mentioned control duration can be used to determine the length of time for the integrated vehicle control system to control the first target oil pump.

[0061] Optionally, when the vehicle's driving state is a normal driving state, the driving speed is greater than the target threshold, and the high-pressure oil pump fails to work, the drive torque limit control can be entered. When the vehicle enters the drive torque limit control, it can start timing from when the integrated vehicle control system prohibits the high-pressure oil pump from working to obtain the control duration for the integrated vehicle control system to control the high-pressure oil pump. Based on this control duration, the control data at different time periods can be determined. After entering the drive torque limit control, if the high-pressure oil pump resumes normal operation, the drive torque limit control can be exited, or exited when entering the next driving cycle.

[0062] In the embodiment of the present invention, by determining the control duration for the integrated vehicle control system in the vehicle to control the first target oil pump, the control data can be further optimized to ensure that the vehicle can decelerate to a stop in a safe and stable manner.

[0063] As an optional embodiment, determining the control data based on the control duration includes: in response to the control duration being within the first duration, determining the working state of the second target oil pump in the oil pump based on the working data, where the working voltage of the second target oil pump is less than the working voltage of the first target oil pump; determining the control data based on the working state of the second target oil pump.

[0064] In this embodiment, determining the control data based on the control duration may include the following steps: When the control duration is within the first duration, the operating state of the second target oil pump in the oil pump may be determined based on the operating data; the control data may be determined based on the operating state of the second target oil pump. The second target oil pump described above may be a low-pressure oil pump, and the operating voltage of the low-pressure oil pump is less than that of the high-pressure oil pump. The operating voltage described above may be the voltage required when the oil pump is operating. The first duration may be from 0 to T1, where T1 may be 3 seconds. It should be noted that this is only an example here, and no specific limit is placed on the magnitude of T1.

[0065] Optionally, when the control duration is within the first duration, drive torque limitation may not be performed, and the vehicle control system may determine the operating state of the low-pressure oil pump and determine the control data based on the operating state of the low-pressure oil pump.

[0066] In the embodiment of the present invention, when the high-pressure oil pump is in an abnormal operating state and the vehicle is in a high-speed driving state, the vehicle control system may quickly switch to monitoring the operating state of the low-pressure oil pump based on a preset control duration (within the first duration). By determining the operating state of the low-pressure oil pump, the control data may be determined, so that with the support of the low-pressure oil pump, the driving speed may be smoothly and safely reduced until the vehicle stops.

[0067] As an optional embodiment, determining the control data based on the operating state of the second target oil pump includes: in response to the operating state of the second target oil pump being a normal operating state, determining an adjustment range of the upper limit value, where the adjustment range is determined based on the standard torque of the vehicle; determining a first adjustment rate based on the initial torque value and the upper limit torque value of the adjustment range, and determining a second adjustment rate based on the upper limit torque value and the lower limit torque value of the adjustment range, and determining a third adjustment rate based on the lower limit torque value and the target torque value; determining the control data based on the first adjustment rate, the second adjustment rate, and the third adjustment rate as follows: controlling the upper limit value at the first adjustment rate and adjusting it from the initial torque value to the upper limit torque value within the second duration; in response to the upper limit value being adjusted to the upper limit torque value, controlling the adjusted upper limit value at the second adjustment rate and decreasing it from the upper limit torque value to the lower limit torque value within the third duration; in response to the upper limit value decreasing to the lower limit torque value, controlling the adjusted upper limit value at the third adjustment rate and decreasing it from the lower limit torque value to the target torque value within the fourth duration, where the second duration and the third duration are different, and the third duration and the fourth duration are different.

[0068] In this embodiment, it is determined whether the operating state of the second target oil pump is a normal operating state. If the operating state of the second target oil pump is a normal operating state, the adjustment range of the upper limit value can be further determined. The first adjustment rate can be determined based on the initial torque value and the upper limit torque value of the adjustment range, the second adjustment rate can be determined based on the upper limit torque value and the lower limit torque value of the adjustment range, and the third adjustment rate can be determined based on the lower limit torque value and the target torque value. The control data can be determined based on the first adjustment rate, the second adjustment rate, and the third adjustment rate as follows: control the upper limit value at the first adjustment rate to adjust from the initial torque value to the upper limit torque value within the second time period; if the upper limit value is adjusted to the upper limit torque value, control the adjusted upper limit value at the second adjustment rate to decrease from the upper limit torque value to the lower limit torque value within the third time period; if the upper limit value decreases to the lower limit torque value, control the adjusted upper limit value at the third adjustment rate to decrease from the lower limit torque value to the target torque value within the fourth time period. The above adjustment range can be determined based on the standard torque of the vehicle.

[0069] Optionally, the above standard torque can be the standard torque corresponding to the engine in the vehicle, or the standard torque corresponding to the engine and the motor. It can be determined in advance according to the type of the engine and / or motor in the vehicle. For example, when the vehicle is a pure electric vehicle, the standard torque corresponding to the motor in the vehicle can be determined in advance through testing. When the vehicle is a hybrid vehicle, the standard torque corresponding to the engine and the motor in the vehicle can be determined in advance through testing. It should be noted that only examples are given here, and the specific determination method of the standard torque is not limited.

[0070] Optionally, the time periods where the second time period and the third time period are located are different, the time periods where the third time period and the fourth time period are located are different, and the second time period, the third time period, and the fourth time period can be preset calibration values.

[0071] Optionally, the above standard torque can be the torque value that the vehicle motor and / or engine can output under specific conditions, and it is one of the important parameters for evaluating the power performance of the vehicle. For a pure electric vehicle, the standard torque is only associated with the vehicle motor. For a hybrid vehicle, the standard torque is associated with both the motor and the engine.

[0072] Optionally, the above-mentioned second duration and third duration can be preset durations, and the second duration and the third duration can be represented by T1 to T2. That is to say, the time period of T1 to T2 includes two time periods of the second duration and the third duration. Among them, T2 can be 60 seconds. The above-mentioned fourth duration can be represented by T2 to T3, where T3 can be less than the maximum duration allowed for the low-pressure oil pump to work. For example, it can be 60 seconds. Assuming that the longest emergency boost time that the low-pressure oil pump can provide is 3 minutes (180 seconds), then T3 should be set within 180 seconds after the start of T1 to ensure that the vehicle can stop safely within the working time limit of the low-pressure oil pump. It should be noted that the specific durations of the above-mentioned T2 and T3 are only for illustrative purposes and are not specifically limited here.

[0073] Optionally, when the working state of the second target oil pump is the normal working state, the adjustment range of the upper limit value can be determined. For example, it can be 50% to 70% of the standard torque. This adjustment range can ensure that while the vehicle reduces torque output, the low-pressure oil pump can provide sufficient steering assistance.

[0074] For example, under normal driving conditions of the vehicle, the initial torque value is 100% of the upper limit value of the driving torque, where 100% represents the maximum torque that the vehicle motor or engine can provide. When the high-pressure oil pump fails, the driving data of the vehicle can be obtained. Based on the driving data, the driving speed and the driving state of the vehicle can be determined. If the driving state is the normal driving state, the driving speed is greater than the target threshold, and the working state is the abnormal working state, then the control duration of the vehicle control system for the first target oil pump can be determined. If the control duration is within the first duration (for example, 0 to T1), the working state of the low-pressure oil pump can be determined. If the working state of the low-pressure oil pump is the normal working state, the adjustment range of the upper limit value can be determined. For example, it can be from 100% of the standard torque to 70% of the standard torque. If the control duration is within the second duration and the third duration (for example, T1 to T2), then based on the second duration, the initial torque value, and the upper limit value of the adjustment range (that is, 100% of the standard torque), the first adjustment rate can be determined; and based on the third duration, the upper limit torque value (for example, 70% of the standard torque), and the lower limit torque value (for example, 50% of the standard torque), the second adjustment rate can be determined; if the control duration is within the fourth duration (for example, T2 to T3), based on the fourth duration, the upper limit torque value (for example, 50% of the standard torque), and the lower limit torque value (for example, 0), the third adjustment rate can be determined.

[0075] Further, based on the first adjustment rate, the second adjustment rate, and the third adjustment rate, the process of determining the control data may be as follows: At the first adjustment rate, control the upper limit value (e.g., 100% standard torque), within the second time period, adjust from the initial torque value (e.g., 100% standard torque) to the upper limit torque value (e.g., 70% standard torque); in response to the upper limit value being adjusted to the upper limit torque value, at the second adjustment rate, control the adjusted upper limit value, within the third time period, decrease from the upper limit torque value (e.g., 70% standard torque) to the lower limit torque value (e.g., 50% standard torque); in response to the upper limit value decreasing to the lower limit torque value, at the third adjustment rate, control the adjusted upper limit value, within the fourth time period, decrease from the lower limit torque value (e.g., 50% standard torque) to the target torque value (e.g., 0).

[0076] In the embodiment of the present invention, through the above steps, in the case of a high-pressure oil pump failure, the vehicle can decelerate smoothly and safely to a stop state, and at the same time, can make full use of the emergency boost of the low-pressure oil pump until the working limit of the low-pressure oil pump is reached, providing the driver with sufficient reaction time and control ability to cope with emergencies and ensuring driving safety.

[0077] As an optional embodiment, determining the control data based on the working state of the second target oil pump includes: in response to the working state of the second target oil pump being an abnormal working state, determining a fourth adjustment rate based on the initial torque value and the target torque value of the upper limit value; based on the fourth adjustment rate, determining the control data as: at the fourth adjustment rate, control the upper limit value to decrease from the initial torque value to the target torque value within the fifth time period.

[0078] In this embodiment, if it is necessary to determine the control data based on the working state of the second target oil pump, in the case where the working state of the second target oil pump is an abnormal working state, a fourth adjustment rate may be determined based on the initial torque value and the target torque value of the upper limit value; the control data may be determined based on the fourth adjustment rate: at the fourth adjustment rate, control the upper limit value to decrease from the initial torque value to the target torque value within the fifth time period. Among them, the fifth time period may be represented by T1 to T4. The setting of the above fourth adjustment rate should be fast enough to ensure that the vehicle reduces to a safe driving speed in the shortest possible time, and at the same time, the safety and comfort of the driver and passengers should also be considered. For example, if the initial torque value of the vehicle is 100% and the target torque value is 0%, the fourth adjustment rate may be set to decrease the torque by 2% per second to reduce the torque to 0% within 50 seconds. This is only for illustrative purposes, and the fourth adjustment rate is not specifically limited here.

[0079] In this embodiment, when the second target oil pump (low-pressure oil pump) is in an abnormal working state, ensuring the safe parking of the vehicle becomes particularly urgent. At this time, the upper limit value of the driving torque can be quickly reduced, so that the upper limit value of the driving torque of the vehicle can be decreased from the initial torque value to a predetermined target torque value, usually 0, in the shortest possible time (the fifth time period), so as to guide the vehicle to enter the parking state smoothly and quickly, prevent out-of-control or collision accidents from occurring, thereby improving the overall safety performance of the vehicle when facing sudden failures, achieving the technical effect of safely controlling the vehicle, and solving the technical problem of being unable to safely control the vehicle.

[0080] Optionally, when the working state of the second target oil pump is an abnormal working state, that is, the low-pressure oil pump has an abnormality (such as the oil pump motor is overloaded, the oil pressure is abnormally low, etc.), indicating that the low-pressure oil pump can no longer provide the required steering assistance, the upper limit value of the driving torque can be directly decreased from the initial torque value to the target torque value at the fourth adjustment rate without going through multi-stage gradual adjustments. For example, during T1 to T4, the low-pressure oil pump cannot work normally, and the upper limit value of the driving torque can be gradually decreased to 0% within T1 to T4 (such as 10 seconds) immediately.

[0081] Optionally, after the upper limit value of the driving torque is limited to 0%, the upper limit value of the driving torque within the current driving cycle will be limited and maintained at 0%.

[0082] In the embodiment of the present invention, according to the fourth adjustment rate, controlling the upper limit value to decrease from the initial torque value to the target torque value within the fifth time period can control the vehicle speed to decrease uniformly to 0, ensuring the safety of the driver.

[0083] As an optional embodiment, the method further includes: in response to the working state of the first target oil pump being an abnormal state, outputting a prompt message, where the prompt message is used to prompt that the vehicle needs to enter the parking state.

[0084] In this embodiment, when the working state of the first target oil pump is an abnormal state, a prompt message can be output. The above prompt message can be used to prompt that the vehicle needs to enter the parking state, and can be a voice message, a text message, a prompt message received by a mobile device, and can be displayed through a display in the vehicle. It should be noted that only examples are given here, and the type and manifestation form of the prompt message are not specifically limited.

[0085] Optionally, when the working state of the first target oil pump (high-pressure oil pump) is abnormal, the vehicle control system can take a key auxiliary measure, such as outputting a prompt message, to warn the user that the vehicle needs to enter the safe parking state as soon as possible, so as to ensure that the user can promptly realize the severity of the high-pressure oil pump failure and quickly take appropriate actions to avoid the danger that may be caused by insufficient steering assistance.

[0086] Optionally, the above prompt information can be output through a dashboard, a sound alarm or other driver warning systems. For example, the vehicle dashboard can be used to prompt the user to pull over immediately in the form of sound and light alarms. It should be noted that the above prompt information and output methods are only for illustrative purposes and are not specifically limited here.

[0087] In the embodiments of the present invention, the working data of the oil pump in the vehicle can be collected; based on the working data, the working state of the first target oil pump in the oil pump can be determined; based on the working state, the control data of the vehicle can be determined; and the upper limit value of the driving torque of the vehicle can be adjusted from the initial torque value to the target torque value according to the adjustment rate in the control data. That is to say, in the embodiments of the present invention, the working state of the first target oil pump (such as a high-pressure oil pump) in the vehicle is determined. Based on this working state, the corresponding control data of the vehicle can be determined. Based on this control data, the upper limit value of the driving torque of the vehicle can be controlled to decrease uniformly from the initial torque value to the target torque value to ensure that the vehicle decelerates smoothly to a stop, thereby achieving the technical effect of safely controlling the vehicle and solving the technical problem of being unable to safely control the vehicle.

[0088] The technical solutions of the embodiments of the present invention will be illustrated below in conjunction with preferred embodiments.

[0089] Currently, with the continuous increase in oil prices and the development of new energy, new energy vehicles have become a trend. However, the safety issues of new energy vehicles are important concerns for users, and major vehicle manufacturers have also invested a large amount of resources in researching them to ensure vehicle safety. Currently, in new energy vehicles, such as in new energy commercial vehicles, the steering system generally uses a dual-source oil pump system to provide the power for steering assistance. Under normal circumstances, the high-pressure oil pump provides the assistance. When the high-pressure oil pump fails, the low-pressure oil pump will take over as the power source for steering assistance. However, generally, the low-pressure oil pump cannot support long-term steering assistance and can only meet the emergency steering requirements. After the high-pressure oil pump fails, the vehicle needs to stop safely as soon as possible to avoid traffic accidents caused by steering failure. Therefore, there is still a technical problem of being unable to safely control the vehicle.

[0090] The embodiments of the present invention propose a vehicle drive control method under high-pressure failure of a dual-source oil pump. By collecting the state information of the high-pressure oil pump and the state information of the low-pressure oil pump, the working state of the oil pump is judged, which is used as the basis for entering and exiting this control method. After performing this control method, the vehicle control system reasonably limits the upper limit value of the driving torque according to the driver's torque demand, the state information of the vehicle assembly, and in combination with time, and finally ensures that the user drives the vehicle to stop safely within the allowable working duration of the low-pressure oil pump. Thereby achieving the technical effect of safely controlling the vehicle and solving the technical problem of being unable to safely control the vehicle.

[0091] The embodiments of the present invention will be further introduced below.

[0092] In the embodiments of the present invention, Figure 2 is a flowchart of a vehicle drive control method under high - pressure failure of a dual - source oil pump according to an embodiment of the present invention. As Figure 2 shown, the method may include the following steps:

[0093] Step S201, determine the working state of the dual - source oil pump.

[0094] In this embodiment, the working state of the dual - source oil pump can be determined according to vehicle bus or hard - wire signals. The working states can be normal working state of the high - pressure oil pump, normal non - working state of the high - pressure oil pump, high - pressure oil pump failure state, normal working state of the low - pressure oil pump, normal non - working state of the low - pressure oil pump, low - pressure oil pump failure state, etc.

[0095] Step S202, determine the entry and exit of drive torque limit control.

[0096] In this embodiment, when the vehicle is in a normal driving state, the driving speed is greater than the target threshold, and the high - pressure oil pump fails to work, this drive torque limit control can be entered. When the high - pressure oil pump resumes normal operation during the process of entering this drive torque limit control, this drive torque limit control process is exited. Or when entering the next driving cycle, the drive torque limit control is exited.

[0097] Step S203, perform drive torque limit control.

[0098] In this embodiment, start timing from when the vehicle control system prohibits the high - pressure oil pump from working to obtain the time when the vehicle control system prohibits the high - pressure oil pump from starting to work (i.e., the control duration).

[0099] Step S204, give a prompt through the instrument.

[0100] In this embodiment, during the process of entering the above - mentioned vehicle drive torque control, the instrument gives a prompt to the user in the form of sound and light alarm that the steering system has occurred and the vehicle needs to pull over immediately.

[0101] In an embodiment of the present invention, the operating data of an oil pump in a vehicle can be collected; based on the operating data, the operating state of a first target oil pump (e.g., a high-pressure oil pump) in the oil pump can be determined; based on the operating state, the control data of the vehicle can be determined; and the upper limit value of the driving torque of the vehicle can be adjusted from an initial torque value to a target torque value according to the adjustment rate in the control data. That is, in the embodiment of the present invention, the operating state of the first target oil pump (e.g., a high-pressure oil pump) in the vehicle is determined, and based on this operating state, the corresponding control data of the vehicle can be determined. Based on this control data, the upper limit value of the driving torque of the vehicle can be controlled to decrease uniformly from the initial torque value to the target torque value to ensure that the vehicle decelerates smoothly to a stop, thereby achieving the technical effect of safely controlling the vehicle and solving the technical problem of being unable to safely control the vehicle.

[0102] Figure 3 It is a flowchart of a driving torque limit control method according to an embodiment of the present invention, and is a specific description of the above step S203. As Figure 3 shown, it includes the following steps:

[0103] Step S301, determine the operating state of the low-pressure oil pump.

[0104] In this embodiment, when the time when the vehicle control system prohibits the high-pressure oil pump from starting to work is between 0 and T1 (T1 can be 3 s): no driving torque limit is performed, and the vehicle control system determines the operating state of the low-pressure oil pump. If the low-pressure oil pump is working normally, step S302 is executed; if the low-pressure oil pump cannot work normally, step S304 is executed.

[0105] Step S302, adjust the upper limit value of the driving torque based on the adjustment range of the upper limit value of the driving torque.

[0106] In this embodiment, if the low-pressure oil pump is working normally, the upper limit value of the driving torque can be adjusted based on the adjustment range of the upper limit value of the driving torque. When the time when the vehicle control system prohibits the high-pressure oil pump from starting to work is between T1 and T2 (T2 can be 60 s), at the beginning of this stage, the upper limit value of the driving torque can drop to a certain fixed percentage (e.g., 70%) of the upper limit of the vehicle driving torque and drop to a certain percentage (e.g., 50%) at a certain rate. The rate can include a first adjustment rate, a second adjustment rate, and a third adjustment rate.

[0107] Optionally, the adjustment range of the upper limit value of the driving torque can be 50% to 70% of the standard torque. The standard torque generally refers to the torque value that the vehicle motor or engine can output under specific conditions. This adjustment range can ensure that while the vehicle reduces torque output, the low-pressure oil pump can provide sufficient steering assistance.

[0108] For example, under normal driving conditions of a vehicle, the initial torque value is 100% of the upper limit value of the driving torque, where 100% represents the maximum torque that the vehicle motor or engine can provide. In the initial stage after the low-pressure oil pump is working normally and the high-pressure oil pump fails, that is, in the stage of T1 to T2, the upper limit value of the driving torque can first drop to 70% of the upper limit torque value of the adjustment range, that is, reduce the torque by 30% to cope with the decrease in power steering. According to the initial torque value (assumed to be 100%) and the upper limit torque value (such as 70%) of the above-determined adjustment range, calculate the first adjustment rate. Assuming that the vehicle needs to reduce the torque from 100% to 70% within 60 seconds, then the first adjustment rate is about 0.5% reduction per second. When the upper limit value of the driving torque has dropped to the upper limit torque value (70%), according to the second adjustment rate, further reduce the torque to the lower limit torque value (such as 50%). Assuming that it takes 30 seconds to reduce the torque from 70% to 50% next, then the second adjustment rate is about 0.67% reduction per second. When the torque reaches the lower limit torque value, the third adjustment rate can be determined according to the lower limit torque value and the target torque value (assumed to be 0%). For example, within the next 30 seconds, reduce the torque from 50% to 0%, and the third adjustment rate will be about 1.6% reduction per second.

[0109] Step S303: Adjust the upper limit value of the driving torque to the target torque value.

[0110] In this embodiment, after adjusting the upper limit value of the driving torque within the adjustment range based on the upper limit value of the driving torque, the upper limit value of the driving torque can be adjusted to the target torque value. When the vehicle is between T2 and T3 (T3 can be 60 s), the driving torque limit can gradually decrease at a certain rate from the torque limit judged in the previous timing period, and the target torque value is 0%. Among them, T3 should be less than the maximum working duration allowed for the low-pressure oil pump.

[0111] Optionally, assuming that the longest emergency power assist time that the low-pressure oil pump can provide is 3 minutes (180 seconds), then T3 should be set within 180 seconds after the start of T1 to ensure that the vehicle can stop safely within the working time limit of the low-pressure oil pump.

[0112] Step S304: The upper limit value of the driving torque immediately and gradually drops to 0%.

[0113] In this embodiment, when the low-pressure oil pump cannot work normally and the time when the vehicle control system prohibits the high-pressure oil pump from starting is between T1 and T4, there is no need for multi-stage gradual adjustment, and the upper limit value of the driving torque can immediately drop from the initial torque value to 0% within T1 to T4 (such as 10 s).

[0114] Optionally, after the upper limit value of the driving torque is limited to 0%, the driving torque limit remains 0% within the current driving cycle.

[0115] According to an embodiment of the present invention, there is also provided a control device for a vehicle. It should be noted that the control device for the vehicle can be used to execute the vehicle control method in the above embodiment.

[0116] Figure 4 It is a schematic diagram of a control device for a vehicle according to an embodiment of the present invention. As Figure 4 shown, the vehicle control device 400 may include: an acquisition unit 402, a first determination unit 404, a second determination unit 406, and an adjustment unit 408.

[0117] The acquisition unit 402 is configured to acquire the working data of the oil pump in the vehicle.

[0118] The first determination unit 404 is configured to determine the working state of the first target oil pump in the oil pump based on the working data.

[0119] The second determination unit 406 is configured to determine the control data of the vehicle based on the working state.

[0120] The adjustment unit 408 is configured to adjust the upper limit value of the driving torque from the initial torque value to the target torque value according to the adjustment rate in the control data, where the upper limit value of the driving torque is used to control the driving state of the vehicle, and the target torque value is less than the initial torque value.

[0121] Optionally, the second determination unit 406 may include: an acquisition module, configured to acquire the driving data of the vehicle; a first determination module, configured to determine the driving speed and the driving state of the vehicle based on the driving data; a second determination module, configured to determine the control data based on the driving state, the driving speed, and the working state.

[0122] Optionally, the vehicle control device 400 may further include: a third determination module, configured to determine the control data based on the driving state, the driving speed, and the working state, including: in response to the driving state being a normal driving state, the driving speed being greater than the target threshold, and the working state being an abnormal working state, determining the control duration for the vehicle's vehicle control system to control the first target oil pump; and determining the control data based on the control duration.

[0123] Optionally, the vehicle control device 400 may further include: a fourth determination module, configured to determine the control data based on the control duration, including: in response to the control duration being within the first duration, determining the working state of the second target oil pump in the oil pump based on the working data; and determining the control data based on the working state of the second target oil pump.

[0124] Optionally, the control device 400 of the vehicle may further include: a fifth determination module, configured to determine control data based on the operating state of the second target oil pump, including: in response to the operating state of the second target oil pump being a normal operating state, determining an adjustment range of the upper limit value, where the adjustment range is determined based on the standard torque of the vehicle; determining a first adjustment rate based on the initial torque value and the upper limit torque value of the adjustment range, and determining a second adjustment rate based on the upper limit torque value and the lower limit torque value of the adjustment range, and determining a third adjustment rate based on the lower limit torque value and the target torque value; determining the control data based on the first adjustment rate, the second adjustment rate, and the third adjustment rate as: controlling the upper limit value at the first adjustment rate to be adjusted from the initial torque value to the upper limit torque value within a second time period; in response to the upper limit value being adjusted to the upper limit torque value, controlling the adjusted upper limit value at the second adjustment rate to be decreased from the upper limit torque value to the lower limit torque value within a third time period; in response to the upper limit value being decreased to the lower limit torque value, controlling the adjusted upper limit value at the third adjustment rate to be decreased from the lower limit torque value to the target torque value within a fourth time period, where the second time period and the third time period are different, and the third time period and the fourth time period are different.

[0125] Optionally, the control device 400 of the vehicle may further include: a sixth determination module, configured to determine control data based on the operating state of the second target oil pump, including: in response to the operating state of the second target oil pump being an abnormal operating state, determining a fourth adjustment rate based on the initial torque value and the target torque value of the upper limit value; determining the control data based on the fourth adjustment rate as: controlling the upper limit value to be decreased from the initial torque value to the target torque value within a fifth time period at the fourth adjustment rate.

[0126] Optionally, the control device 400 of the vehicle may further include: an output module, configured to output a prompt message in response to the operating state of the first target oil pump being an abnormal state, where the prompt message is used to prompt that the vehicle needs to enter a parking state.

[0127] In an embodiment of the present invention, the working data of the oil pump in the vehicle is collected by the collection unit 402; the working state of the first target oil pump in the oil pump is determined by the first determination unit 404 based on the working data; the control data of the vehicle is determined by the second determination unit 406 based on the working state; the upper limit value of the driving torque is adjusted from the initial torque value to the target torque value by the adjustment unit 408 according to the adjustment rate in the control data, where the upper limit value of the driving torque is used to control the driving state of the vehicle, and the target torque value is less than the initial torque value, thereby achieving the technical effect of safely controlling the vehicle and solving the technical problem of being unable to safely control the vehicle.

[0128] According to another aspect of the embodiments of the present invention, there is also provided a computer-readable storage medium. The computer-readable storage medium includes a stored program, wherein when the program runs, it controls the device where the computer-readable storage medium is located to execute the vehicle control method of the embodiments of the present invention.

[0129] According to another aspect of the embodiments of the present invention, there is also provided a processor. The processor is used to run a program, wherein when the program runs, it executes the vehicle control method of the embodiments of the present invention.

[0130] According to another aspect of the embodiments of the present invention, there is also provided a computer program product. The computer program product includes a computer program, and when the computer program is executed by a processor, it implements the vehicle control method of the above embodiments of the present invention.

[0131] In the above embodiments of the present invention, the descriptions of the various embodiments have their own emphases. For the parts not detailed in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0132] In several embodiments provided by the present invention, it should be understood that the disclosed technical content can be implemented in other ways. Among them, the device embodiments described above are only illustrative. For example, the division of the units can be a logical function division. In actual implementation, there can be other division methods. For example, multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the displayed or discussed couplings or direct couplings or communication connections to each other can be through some interfaces. The indirect couplings or communication connections of units or modules can be in an electrical or other form.

[0133] The units described as separate components may or may not be physically separated. The components displayed as units may or may not be physical units, that is, they can be located in one place or distributed to multiple units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0134] In addition, the functional units in the various embodiments of the present invention can be integrated into one processing unit, or each unit can exist physically alone, or two or more units can be integrated into one unit. The above integrated units can be implemented in the form of hardware or in the form of software functional units.

[0135] When 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 computer-readable storage medium. Based on such an understanding, the technical solution of the present invention, in essence, or the part that contributes to the prior art, or all or part of the technical solution, can be embodied in the form of a software product. The computer software product is stored in a storage medium and includes several instructions for causing a computer device (which can be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of the present invention. The foregoing storage medium includes: various media that can store program codes, such as USB flash drives, read-only memories (ROMs), random access memories (RAMs), mobile hard disks, magnetic disks, or optical discs.

[0136] The foregoing are only the preferred embodiments of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the principle of the present invention, several improvements and refinements can be made, and these improvements and refinements should also be regarded as the protection scope of the present invention.

Claims

1. A vehicle control method, characterized in that: include: Collect the working data of the oil pump in the vehicle; determining, based on the working data, a working state of a first target oil pump among the oil pumps; Based on the working state, determining control data of the vehicle; According to the adjustment rate in the control data, the upper limit value of the driving torque of the vehicle is adjusted from the initial torque value to the target torque value, wherein the upper limit value of the driving torque is used to control the driving state of the vehicle, and the target torque value is less than the initial torque value.

2. The method according to claim 1, characterized in that: The determining the control data of the vehicle based on the working state includes: Acquiring driving data of the vehicle; Based on the driving data, determining the driving speed of the vehicle and the driving state of the vehicle; The control data is determined based on the driving state, the driving speed and the working state.

3. The method according to claim 2, characterized in that The determining of the control data based on the driving state, the driving speed and the working state comprises: In response to the driving state being a normal driving state, the driving speed being greater than a target threshold, and the working state being an abnormal working state, determining a control time duration for a vehicle control system in the vehicle to control the first target oil pump; Based on the control duration, the control data is determined.

4. The method according to claim 3, characterized in that The determining the control data based on the control duration includes: In response to the control time being within a first time, determining an operating state of a second target oil pump in the oil pumps based on the operating data, wherein an operating voltage of the second target oil pump is less than an operating voltage of the first target oil pump; The control data is determined based on the operating state of the second target oil pump.

5. The method according to claim 4, characterized in that The determining the control data based on the working state of the second target oil pump includes: In response to the operating state of the second target oil pump being a normal operating state, determining an adjustment interval of the upper limit value, wherein the adjustment interval is determined based on a standard torque of the vehicle; Determining a first adjustment rate based on the initial torque value and an upper torque limit value of the adjustment interval, determining a second adjustment rate based on the upper torque limit value and a lower torque limit value of the adjustment interval, and determining a third adjustment rate based on the lower torque limit value and the target torque value; Based on the first adjustment rate, the second adjustment rate and the third adjustment rate, the control data is determined as follows: according to the first adjustment rate, the upper limit value is controlled to be adjusted from the initial torque value to the upper limit torque value within a second time length; in response to the upper limit value being adjusted to the upper limit torque value, according to the second adjustment rate, the adjusted upper limit value is controlled to decrease from the upper limit torque value to the lower limit torque value within a third time length; in response to the upper limit value decreasing to the lower limit torque value, according to the third adjustment rate, the adjusted upper limit value is controlled to decrease from the lower limit torque value to the target torque value within a fourth time length, wherein the second time length is different from the third time length, and the third time length is different from the fourth time length.

6. The method according to claim 4, characterized in that The determining the control data based on the working state of the second target oil pump includes: In response to the operating state of the second target oil pump being an abnormal operating state, determining a fourth adjustment rate based on the initial torque value of the upper limit value and the target torque value; Based on the fourth adjustment rate, the control data is determined as follows: according to the fourth adjustment rate, the upper limit value is controlled to decrease from the initial torque value to the target torque value within a fifth time period.

7. The method according to any one of claims 1 to 6, characterized in that The method further comprises: In response to the operating state of the first target oil pump being an abnormal state, a prompt message is output, wherein the prompt message is used to prompt the vehicle to enter a parking state.

8. A vehicle control device, characterized in that: include: A collection unit, used for collecting working data of the oil pump in the vehicle; a first determining unit, configured to determine an operating state of a first target oil pump among the oil pumps based on the operating data; A second determining unit, configured to determine control data of the vehicle based on the working state; An adjustment unit is used to adjust the upper limit value of the driving torque of the vehicle from an initial torque value to a target torque value according to an adjustment rate in the control data, wherein the upper limit value of the driving torque is used to control the driving state of the vehicle, and the target torque value is less than the initial torque value.

9. A vehicle, characterized in that: Used to perform the method according to any one of claims 1 to 7.

10. A computer program product, characterized in that The method comprises computer instructions, which, when executed by a processor, implement the method according to any one of claims 1 to 7.

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