Vehicle control method, apparatus, device, and storage medium

Abstract

The application discloses a vehicle control method, device, equipment and storage medium. The method comprises the following steps: obtaining water pump running information of an electric water pump of a vehicle and component running information of an associated component associated with the electric water pump during vehicle driving, wherein the associated component comprises a thermal management controller valve, a cooling fan and an engine water temperature sensor; performing fault detection on the electric water pump based on the water pump running information, and performing fault detection on the associated component based on the component running information; and controlling the vehicle based on the fault detection results of the electric water pump and the associated component. The technical problem that the control method of the electric water pump is single and the vehicle, the electric water pump and the associated component cannot be controlled as a whole from the perspective of the engine thermal management system is solved. The beneficial effects of accurately controlling the vehicle, the electric water pump and the associated component according to the actual situation, protecting driving safety and improving the driving experience are achieved.

Description

Technical Field

[0001] This invention relates to the field of vehicle technology, and more particularly to a vehicle control method, apparatus, device, and storage medium. Background Technology

[0002] Currently, electric water pumps are widely used in various vehicles. The engine ECU (Electronic Control Unit) only needs to provide the target speed and enabling conditions, and the electric water pump can operate at the target speed, thereby reducing the engine temperature through the circulation of engine cooling water.

[0003] In existing technologies, the control methods for electric water pumps are relatively simple. For example, when the engine coolant temperature is low, the electric water pump operates intermittently; when the engine coolant temperature is high, the electric water pump determines its operating speed based on the engine speed and load.

[0004] Therefore, existing technologies cannot achieve overall control of the vehicle, electric water pump, and related components from the perspective of the engine thermal management system. Summary of the Invention

[0005] This invention provides a vehicle control method, device, equipment, and storage medium to solve the technical problem that the control method for electric water pumps is singular and cannot control the vehicle, electric water pump, and related components as a whole from the perspective of the engine thermal management system.

[0006] According to one aspect of the present invention, a vehicle control method is provided, the method comprising:

[0007] During vehicle operation, the system acquires the water pump operation information of the vehicle's electric water pump and the component operation information of related components associated with the electric water pump. These related components include the thermal management controller valve, the cooling fan, and the engine water temperature sensor.

[0008] Fault detection of electric water pumps is performed based on water pump operation information, and fault detection of related components is performed based on component operation information;

[0009] Vehicle control is implemented based on fault detection results of the electric water pump and related components.

[0010] According to another aspect of the present invention, a vehicle control device is provided, the device comprising:

[0011] The information acquisition module is used to acquire the water pump operation information of the electric water pump of the vehicle and the component operation information of the associated components related to the electric water pump during the vehicle's operation. The associated components include the thermal management controller valve, the cooling fan, and the engine water temperature sensor.

[0012] The fault detection module is used to detect faults in the electric water pump based on the water pump operation information, and to detect faults in related components based on the component operation information.

[0013] The vehicle control module is used to control the vehicle based on fault detection results of the electric water pump and related components.

[0014] According to another aspect of the present invention, an electronic device is provided, the electronic device comprising:

[0015] At least one processor; and

[0016] A memory that is communicatively connected to at least one processor; wherein,

[0017] The memory stores a computer program that can be executed by at least one processor, such that the at least one processor is able to perform the vehicle control method of any embodiment of the present invention.

[0018] According to another aspect of the present invention, a computer-readable storage medium is provided, which stores computer instructions for causing a processor to execute and implement the vehicle control method of any embodiment of the present invention.

[0019] The technical solution of this invention acquires the water pump operation information of the vehicle's electric water pump and the component operation information of related components during vehicle operation. These related components include a thermal management controller valve, a cooling fan, and an engine coolant temperature sensor. This provides data for vehicle control based on the operating status of the electric water pump and its associated components. Then, fault detection is performed on the electric water pump based on the water pump operation information, and fault detection is performed on the associated components based on the component operation information. This provides a basis for judging vehicle control based on the fault conditions of the electric water pump and its associated components. Finally, vehicle control is implemented based on the fault detection results of the electric water pump and associated components. This solves the technical problem of a single control method for the electric water pump, which cannot comprehensively control the vehicle, electric water pump, and related components from the perspective of the engine thermal management system. It achieves the beneficial effect of accurately controlling the vehicle, electric water pump, and associated components according to actual conditions, protecting driving safety, and improving the driving experience.

[0020] It should be understood that the description in this section is not intended to identify key or essential features of the embodiments of the present invention, nor is it intended to limit the scope of the invention. Other features of the invention will become readily apparent from the following description. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 This is a flowchart of a vehicle control method provided according to Embodiment 1 of the present invention;

[0023] Figure 2 This is a logic block diagram of a vehicle control method provided according to Embodiment 2 of the present invention;

[0024] Figure 3 This is a schematic diagram of the structure of a vehicle control device according to Embodiment 3 of the present invention;

[0025] Figure 4 This is a schematic diagram of the structure of an electronic device that implements the vehicle control method of this invention. Detailed Implementation

[0026] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of the present invention.

[0027] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this invention 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 where appropriate so that the embodiments of the invention described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover a non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0028] Example 1

[0029] Figure 1The flowchart illustrates a vehicle control method according to Embodiment 1 of the present invention. This embodiment is applicable to controlling vehicle conditions. The method can be executed by a vehicle control device, which can be implemented in hardware and / or software and can be configured in an electronic device. Figure 1 As shown, the method includes:

[0030] S110. During vehicle operation, obtain the water pump operation information of the vehicle's electric water pump and the component operation information of the associated components, including the thermal management controller valve, cooling fan and engine water temperature sensor.

[0031] In this embodiment, the associated components can be those whose operating status can directly or indirectly affect the working status of the electric water pump. The water pump operating information can be data related to the electric water pump's operating status obtained from the vehicle's electric water pump sensors. Similarly, the component operating information of the associated components can be data related to the operating status of the associated components, obtained from the vehicle's sensors. Specifically, data related to the operating status of the thermal management controller valve can be obtained from the thermal management controller valve's sensor, the cooling fan's sensor, or the engine coolant temperature sensor's sensor. Optionally, the cooling fan's operating status can also be calculated by the engine ECU; for example, the ECU can calculate and output the cooling fan's duty cycle.

[0032] S120. Based on the pump operation information, perform fault detection on the electric water pump, and based on the component operation information, perform fault detection on related components.

[0033] In this embodiment, fault detection of the electric water pump based on water pump operation information can be performed by detecting faults related to operation from the electric water pump's operation information. This fault-related information can indicate whether the electric water pump has malfunctioned, or it can indicate the specific details of the malfunction. For example, the electric water pump's operation information can be obtained from its sensors, and the fault codes within this information can be used to detect whether a fault has occurred and the specific details of the fault. Similarly, fault detection of related components can also be performed based on component operation information, by detecting faults related to operation from the related component's operation information. Likewise, the related component's operation information can be obtained from its sensors, and the fault codes within this information can be used to detect whether a fault has occurred and the specific details of the fault.

[0034] Optionally, if a motor drive level fault is detected in the thermal management controller valve and the stuck position of the thermal management controller valve is less than a preset opening threshold, the thermal management controller valve is determined to have a first opening stuck fault. The motor drive level fault includes at least one of the following: open circuit in the drive stage, overheating of the drive chip, short circuit in the drive stage, and abnormal drive voltage. Alternatively, if a control fault is detected in the thermal management controller valve and the stuck position of the thermal management controller valve is detected to be less than a preset opening threshold, the thermal management controller valve is determined to have a first opening stuck fault.

[0035] In this embodiment, the control failure of the thermal management controller valve can be a failure where the thermal management controller valve becomes stuck and cannot be controlled due to blockage or other reasons. Motor drive level failures can include one or more of the following: open circuit in the motor drive stage, overheating of the motor drive chip, short circuit in the motor drive stage, and abnormal motor drive voltage, all of which prevent the motor drive from functioning properly. The preset opening threshold can be a pre-set limit value based on actual conditions, used to indicate the opening degree of the thermal management controller valve; there can be one or more preset opening thresholds.

[0036] Specifically, if a motor drive level fault is detected in the thermal management controller valve, or if a control fault is detected in the thermal management controller valve and the stuck position of the thermal management controller valve is detected to be less than the preset opening threshold, it can be determined that the thermal management controller valve has experienced a first opening stuck fault.

[0037] Optionally, if a control fault is detected in the thermal management controller valve, and the stuck position of the thermal management controller valve is detected to be greater than a preset opening threshold, it is determined that the thermal management controller valve has experienced a second opening stuck fault. It is understood that the preset opening threshold used to determine that the thermal management controller valve has experienced a second opening stuck fault can be greater than or equal to the preset opening threshold used to determine that the thermal management controller valve has experienced a first opening stuck fault.

[0038] Optionally, when a preset water pump fault is detected in the electric water pump, and the duration for which the difference between the target speed issued by the vehicle's electronic control unit and the actual feedback speed of the electric water pump is greater than a preset difference threshold exceeds a preset duration threshold, the electric water pump is determined to have malfunctioned. The preset water pump fault includes at least one of the following: electric water pump short circuit fault, electric water pump operating load too low, electric water pump stall, power supply circuit undervoltage, power supply circuit overvoltage, current over-limit, synchronous serial peripheral bus communication fault, and vehicle network bus communication fault.

[0039] In this embodiment, the preset difference threshold can be pre-set according to actual conditions, representing the maximum allowable reasonable error between the target speed issued by the vehicle's electronic control unit and the actual feedback speed of the electric water pump. The preset duration threshold can be pre-set according to actual conditions, representing the maximum allowable duration for which the difference between the target speed issued by the vehicle's electronic control unit and the actual feedback speed of the electric water pump exceeds the preset difference threshold.

[0040] Specifically, when the electric water pump experiences one or more of the following: short circuit fault, low operating load, stall, undervoltage in the power supply circuit, overvoltage in the power supply circuit, overcurrent, synchronous serial peripheral bus communication failure, or vehicle network bus communication failure, and the difference between the target speed issued by the vehicle's electronic control unit and the actual feedback speed of the electric water pump exceeds a preset difference threshold for a period of time exceeding a preset threshold, the electric water pump can be identified as having malfunctioned.

[0041] Optionally, if a fault is detected in the electric water pump, and the thermal management controller valve, engine coolant temperature sensor, and cooling fan are not faulty, a request is initiated to fully open the thermal management controller valve, control the cooling fan to operate at a preset power, and control the vehicle to limp, wherein the preset power is greater than or equal to the current operating power of the cooling fan.

[0042] In this embodiment, the preset power can be the power value of the cooling fan after adjusting the current operating power based on the fault conditions of the electric water pump, thermal management controller valve, engine water temperature sensor, and cooling fan.

[0043] Specifically, if a fault is detected in the electric water pump, and the thermal management controller valve, engine coolant temperature sensor, and cooling fan are all functioning correctly, a request can be initiated to fully open the thermal management controller valve. This controls the cooling fan to operate at a preset power level greater than or equal to the current operating power, and also controls vehicle limp-start. Understandably, if a fault is detected in the electric water pump during vehicle ignition and startup, and the thermal management controller valve, engine coolant temperature sensor, and cooling fan are all functioning correctly, the engine is highly susceptible to overheating. To protect vehicle components from damage and ensure driving safety, engine starting can be prevented, and specific fault information can be displayed.

[0044] Optionally, if the thermal management controller valve is not faulty, the valve opening of the thermal management controller valve is greater than the third preset threshold, the actual speed of the electric water pump is greater than the preset speed threshold, the duty cycle of the fan is greater than the preset duty cycle threshold, and the engine water temperature detected by the engine water temperature sensor is greater than the preset water temperature threshold or the rise slope of the engine water temperature is greater than the preset slope threshold, then the cooling fan system is determined to be faulty.

[0045] In this embodiment, the third preset threshold can be a value pre-set according to actual conditions, where the valve opening of the thermal management controller valve is increased based on actual operating conditions. The preset speed threshold can be a speed value after the electric water pump is increased based on actual operating conditions. The preset water temperature threshold can be a limit temperature value for a reasonable engine water temperature pre-set according to actual conditions. The preset slope threshold can be a limit value for a reasonable rise slope of the engine water temperature pre-set according to actual conditions.

[0046] For example, if the thermal management controller valve is not faulty, but the valve opening of the management controller valve is greater than a third preset threshold, the actual speed of the electric water pump is greater than a preset speed threshold, the duty cycle of the fan is greater than a preset duty cycle threshold, and the engine coolant temperature detected by the engine coolant temperature sensor is greater than a preset coolant temperature threshold or the rate of increase of the engine coolant temperature is greater than a preset rate of increase threshold, it can be determined that the cooling fan system is faulty.

[0047] S130: Control the vehicle based on the fault detection results of the electric water pump and related components.

[0048] In this embodiment, the vehicle can be controlled based on the fault status of the electric water pump and related components (e.g., whether a fault has occurred or not). More precise control of the vehicle can also be achieved by combining the specific fault types of the electric water pump and related components.

[0049] It is understandable that the situation where the vehicle has been ignited but has not yet started moving is also part of the vehicle driving process in the various embodiments of the present invention. Depending on whether the vehicle is in the ignition-start state or in the road-driving state when the fault occurs, different control strategies can be adopted for the vehicle.

[0050] For example, if during vehicle operation it is detected that the electric water pump is normal, the cooling fan is malfunctioning, the cold engine coolant temperature sensor is normal, and the thermal management controller valve is normal, the electric water pump can be controlled to operate at its maximum speed to compensate for insufficient heat dissipation caused by the cooling fan malfunction. Understandably, if the cooling fan malfunction is a stop malfunction, meaning it cannot stop while the vehicle is running, and the electric water pump and other related components are normal, only a fault message can be displayed, and the electric water pump can be controlled to operate at its normal speed.

[0051] Optionally, if the detected fault result is a preset detection result, the electric water pump is controlled to operate at a first speed, wherein the first speed is greater than or equal to the current speed of the electric water pump, and the preset detection result is: the thermal management controller valve has a first opening stuck fault, and the cooling fan, engine water temperature sensor and electric water pump are all without fault; or, the cooling fan has a fault, and the thermal management controller valve, engine water temperature sensor and electric water pump are all without fault; or, the engine water temperature sensor has a fault, and the thermal management controller valve, cooling fan and electric water pump are all without fault.

[0052] In other words, if only one of the related components—the thermal management controller valve, the cooling fan, the engine coolant temperature sensor, and the electric water pump—fails, the electric water pump will be controlled to operate at the first speed. The failure in the thermal management controller valve is a first-degree opening jamming fault.

[0053] In this embodiment, the preset detection result can be a combination of different detection results of the fault states of the electric water pump and related components, pre-designed according to actual conditions. The first rotational speed can be the target rotational speed after controlling the electric water pump to change its current rotational speed when the detected fault detection result is the preset detection result. The first opening degree jamming fault can be a valve jamming fault in the thermal management controller, where the jamming position causes the valve to remain in a small opening state.

[0054] Specifically, if the fault detection result is one of the following three preset detection results, the electric water pump can be controlled to operate at a first speed greater than or equal to the current speed of the electric water pump. Specifically, the preset detection result can be: a first-degree opening jamming fault in the thermal management controller valve, and no faults in the cooling fan, engine coolant temperature sensor, and electric water pump; or a fault in the cooling fan, and no faults in the thermal management controller valve, engine coolant temperature sensor, and electric water pump; or a fault in the engine coolant temperature sensor, and no faults in the thermal management controller valve, cooling fan, and electric water pump.

[0055] Optionally, if a second opening degree jamming fault is detected in the thermal management controller valve, the engine coolant temperature detected by the engine coolant temperature sensor is lower than the preset temperature, and neither the cooling fan nor the electric water pump is faulty, the electric water pump is controlled to operate at a second speed, wherein the second speed is lower than the current speed of the electric water pump; if a second opening degree jamming fault is detected in the thermal management controller valve, the engine coolant temperature detected by the engine coolant temperature sensor is greater than or equal to the preset temperature, and neither the cooling fan nor the electric water pump is faulty, the electric water pump is controlled to continue operating at the current speed.

[0056] In this embodiment, the second opening jamming fault can be a valve jamming fault in the thermal management controller, where the jamming position causes the valve to remain in a large opening state. The preset temperature can be a pre-set engine coolant temperature value based on actual conditions, such as 90°C. The second speed can be a target speed after controlling the electric water pump to change its current speed when the thermal management controller valve is detected to be jammed in a large opening state, the engine coolant temperature detected by the engine coolant temperature sensor is lower than the preset temperature, and neither the cooling fan nor the electric water pump is malfunctioning.

[0057] For example, if a second opening stuck fault is detected in the thermal management controller valve, the engine coolant temperature detected by the engine coolant temperature sensor is less than 90°C, and neither the cooling fan nor the electric water pump is malfunctioning, the electric water pump can be controlled to operate at a second speed lower than its current speed. If a second opening stuck fault is detected in the thermal management controller valve, the engine coolant temperature detected by the engine coolant temperature sensor is greater than or equal to 90°C, and neither the cooling fan nor the electric water pump is malfunctioning, the electric water pump can be controlled to continue operating at its current speed.

[0058] Optionally, if a malfunction is detected in at least two of the associated components—the thermal management controller valve, the cooling fan, the engine coolant temperature sensor, and the electric water pump—the vehicle can be controlled to limp. Understandably, if a malfunction is detected in at least two of the associated components during vehicle ignition and starting, to protect vehicle components from damage and ensure driving safety, engine starting can be prevented and specific fault information can be displayed.

[0059] The technical solution of this embodiment acquires the water pump operation information of the vehicle's electric water pump and the component operation information of related components during vehicle operation. Based on this operation information, fault detection is performed on the electric water pump and related components, and the vehicle is then controlled based on the fault detection results. This solves the technical problem that the control method for the electric water pump is singular and cannot comprehensively control the vehicle, electric water pump, and related components from the perspective of the engine thermal management system. It achieves the beneficial effect of accurately controlling the vehicle, electric water pump, and related components according to actual conditions, protecting driving safety, and improving the driving experience.

[0060] Example 2

[0061] Figure 2This is a logic block diagram of a preferred embodiment of a vehicle control method provided in Embodiment 2 of the present invention. As shown in the figure, this embodiment can select an appropriate control strategy based on the fault conditions of the electric water pump, thermal management controller valve, engine coolant temperature sensor, and cooling fan, as well as the specific conditions of the thermal management controller valve's stuck opening and engine coolant temperature. Technical features that are the same as or similar to those in the foregoing embodiments will not be repeated here. Figure 2 As shown, the method includes:

[0062] 1. During vehicle ignition and startup or while the vehicle is in motion, operational information and fault detection are performed on the electric water pump, as well as the thermal management control valve, cooling fan, and water temperature sensor associated with the operating status of the electric water pump. Fault detection can be performed in parallel or in a specific sequence; this invention does not limit this. It should be understood that the fault detection and control strategies in the following control logic can be interchanged where appropriate, so that they can be implemented in a sequence other than that described.

[0063] 2. Check for sticking in the thermal management control valve. If no fault is found, proceed to the next component. If a fault is found, determine if it's a small-opening sticking issue with the thermal management controller valve. If so, control the electric water pump to run at its maximum speed continuously. If not, determine if it's a large-opening sticking issue with the thermal management controller valve. If both the thermal management controller valve and the water temperature sensor are faulty, control the electric water pump to run at its maximum speed continuously. If the water temperature sensor is not faulty, continue to check if the engine coolant temperature is below 90°C. If it is, control the electric water pump to operate at a target speed that is less than the set threshold speed from the normal operating speed. If it is above or equal to 90°C, control the electric water pump to operate normally.

[0064] 3. Check for cooling fan malfunctions. If a malfunction occurs, control the electric water pump to run at its highest speed continuously. Understandably, this means that the electric water pump is not malfunctioning.

[0065] 4. Detect water temperature sensor malfunctions. If a malfunction occurs, control the electric water pump to run at its highest speed continuously. Understandably, this means the electric water pump is not malfunctioning.

[0066] 5. Detect electric water pump malfunctions. If a malfunction occurs but the thermal management control valve and cooling fan are not malfunctioning, the control sends a request to fully open the thermal management control valve and a request to operate the fan at maximum power.

[0067] 6. If the electric water pump, as well as the thermal management control valve, cooling fan, and water temperature sensor associated with the operating status of the electric water pump, are not faulty, then control the electric water pump to operate normally.

[0068] Table 2 is a table of preferred embodiments of a vehicle control method provided in Embodiment 2 of the present invention. In this table, the columns for thermal management control valve, cooling fan, water temperature sensor, and electric water pump are denoted by 1 to indicate the presence of a fault, and 0 to indicate the absence of a fault. For different combinations of faults, the columns for estimating the specific fault of the thermal management control valve and handling the engine water temperature fault can provide corresponding control strategies.

[0069]

[0070]

[0071]

[0072] Table 1

[0073] Example 3

[0074] Figure 3 This is a schematic diagram of a vehicle control device provided in Embodiment 3 of the present invention. Figure 3 As shown, the device includes: an information acquisition module 310, a fault detection module 320, and a vehicle control module 330.

[0075] The information acquisition module 310 is used to acquire the water pump operation information of the electric water pump and the component operation information of the associated components during vehicle operation, including the thermal management controller valve, the cooling fan, and the engine water temperature sensor; the fault detection module 320 is used to perform fault detection on the electric water pump based on the water pump operation information and to perform fault detection on the associated components based on the component operation information; the vehicle control module 330 is used to control the vehicle based on the fault detection results of the electric water pump and the associated components.

[0076] The technical solution of this invention acquires the water pump operation information of the vehicle's electric water pump and the component operation information of related components during vehicle operation. These related components include a thermal management controller valve, a cooling fan, and an engine coolant temperature sensor. This provides data for vehicle control based on the operating status of the electric water pump and its associated components. Then, fault detection is performed on the electric water pump based on the water pump operation information, and fault detection is performed on the associated components based on the component operation information. This provides a basis for judging vehicle control based on the fault conditions of the electric water pump and its associated components. Finally, vehicle control is implemented based on the fault detection results of the electric water pump and associated components. This solves the technical problem of a single control method for the electric water pump, which cannot comprehensively control the vehicle, electric water pump, and related components from the perspective of the engine thermal management system. It achieves the beneficial effect of accurately controlling the vehicle, electric water pump, and associated components according to actual conditions, protecting driving safety, and improving the driving experience.

[0077] Based on the above embodiments, the vehicle control module 330 can further be used to: control the electric water pump to operate at a first speed when the detected fault detection result is a preset detection result, wherein the first speed is greater than or equal to the current speed of the electric water pump, and the preset detection result is: the thermal management controller valve has a first opening stuck fault, and the cooling fan, engine water temperature sensor and electric water pump are all without fault; or, the cooling fan has a fault, and the thermal management controller valve, engine water temperature sensor and electric water pump are all without fault; or, the engine water temperature sensor has a fault, and the thermal management controller valve, cooling fan and electric water pump are all without fault.

[0078] Based on the above embodiments, the fault detection module 320 can further be used to: determine that the thermal management controller valve has experienced a first opening jamming fault when a motor drive level fault is detected in the thermal management controller valve and the stuck position of the thermal management controller valve is less than a preset opening threshold, wherein the motor drive level fault includes at least one of drive stage open circuit, drive chip overheating, drive stage short circuit, and abnormal drive voltage; or, determine that the thermal management controller valve has experienced a first opening jamming fault when a control fault is detected in the thermal management controller valve and the stuck position of the thermal management controller valve is less than a preset opening threshold.

[0079] Based on the above embodiments, the vehicle control module 330 can further be used to: control the electric water pump to operate at a second speed when a second opening degree jamming fault is detected in the thermal management controller valve, the engine water temperature detected by the engine water temperature sensor is lower than the preset temperature, and neither the cooling fan nor the electric water pump is faulty; and control the electric water pump to continue operating at the current speed when a second opening degree jamming fault is detected in the thermal management controller valve, the engine water temperature detected by the engine water temperature sensor is greater than or equal to the preset temperature, and neither the cooling fan nor the electric water pump is faulty.

[0080] Based on the above embodiments, the fault detection module 320 can further be used to: determine that the thermal management controller valve has a second opening jamming fault when a control fault is detected in the thermal management controller valve and the stuck position of the thermal management controller valve is detected to be greater than the preset opening threshold.

[0081] Based on the above embodiments, the vehicle control module 330 can further be used to: when a fault is detected in the electric water pump, and the thermal management controller valve, engine water temperature sensor and cooling fan are not faulty, initiate a request to fully open the thermal management controller valve, control the cooling fan to operate at a preset power, and control the vehicle to limp, wherein the preset power is greater than or equal to the current operating power of the cooling fan.

[0082] Based on the above embodiments, the fault detection module 320 can further be used to: determine that the electric water pump has malfunctioned when a preset water pump fault is detected, and the duration of the difference between the target speed issued by the vehicle's electronic control unit and the actual feedback speed of the electric water pump being greater than a preset difference threshold exceeds a preset duration threshold. The preset water pump fault includes at least one of the following: electric water pump short circuit fault, electric water pump operating load too low, electric water pump stall, power supply circuit undervoltage, power supply circuit overvoltage, current over-limit, synchronous serial peripheral bus communication fault, and vehicle network bus communication fault.

[0083] Based on the above embodiments, the fault detection module 320 can further be used to: determine that the cooling fan system has malfunctioned when the thermal management controller valve has not malfunctioned, the valve opening of the thermal management controller valve is greater than a third preset threshold, the actual speed of the electric water pump is greater than a preset speed threshold, the duty cycle of the fan is greater than a preset duty cycle threshold, and the engine water temperature detected by the engine water temperature sensor is greater than a preset water temperature threshold or the rising slope of the engine water temperature is greater than a preset slope threshold.

[0084] Based on the above embodiments, the vehicle control module 330 can further be used to control vehicle limp when at least two of the associated components, including the thermal management controller valve, cooling fan, engine water temperature sensor and electric water pump, are detected to be malfunctioning.

[0085] The vehicle control device provided in the embodiments of the present invention can execute the vehicle control method provided in any embodiment of the present invention, and has the corresponding functional modules and beneficial effects of executing the method.

[0086] Example 4

[0087] Figure 4A schematic diagram of an electronic device 10 that can be used to implement embodiments of the present invention is shown. The electronic device is intended to represent various forms of digital computers, such as laptop computers, desktop computers, workstations, personal digital assistants, servers, blade servers, mainframe computers, and other suitable computers. The electronic device can also represent various forms of mobile devices, such as personal digital processors, cellular phones, smartphones, wearable devices (e.g., helmets, glasses, watches, etc.), and other similar computing devices. The components shown herein, their connections and relationships, and their functions are merely illustrative and are not intended to limit the implementation of the invention described and / or claimed herein.

[0088] like Figure 4 As shown, the electronic device 10 includes at least one processor 11 and a memory, such as a read-only memory (ROM) 12 or a random access memory (RAM) 13, communicatively connected to the at least one processor 11. The memory stores computer programs executable by the at least one processor. The processor 11 can perform various appropriate actions and processes based on the computer program stored in the ROM 12 or loaded from storage unit 18 into the RAM 13. The RAM 13 may also store various programs and data required for the operation of the electronic device 10. The processor 11, ROM 12, and RAM 13 are interconnected via a bus 14. An input / output (I / O) interface 15 is also connected to the bus 14.

[0089] Multiple components in electronic device 10 are connected to I / O interface 15, including: input unit 16, such as keyboard, mouse, etc.; output unit 17, such as various types of displays, speakers, etc.; storage unit 18, such as disk, optical disk, etc.; and communication unit 19, such as network card, modem, wireless transceiver, etc. Communication unit 19 allows electronic device 10 to exchange information / data with other devices through computer networks such as the Internet and / or various telecommunications networks.

[0090] Processor 11 can be a variety of general-purpose and / or special-purpose processing components with processing and computing capabilities. Some examples of processor 11 include, but are not limited to, a central processing unit (CPU), a graphics processing unit (GPU), various special-purpose artificial intelligence (AI) computing chips, various processors running machine learning model algorithms, a digital signal processor (DSP), and any suitable processor, controller, microcontroller, etc. Processor 11 performs the various methods and processes described above, such as vehicle control methods.

[0091] In some embodiments, the vehicle control method may be implemented as a computer program tangibly contained in a computer-readable storage medium, such as storage unit 18. In some embodiments, part or all of the computer program may be loaded and / or installed on electronic device 10 via ROM 12 and / or communication unit 19. When the computer program is loaded into RAM 13 and executed by processor 11, one or more steps of the vehicle control method described above may be performed. Alternatively, in other embodiments, processor 11 may be configured to perform the vehicle control method by any other suitable means (e.g., by means of firmware).

[0092] Various embodiments of the systems and techniques described above herein can be implemented in digital electronic circuit systems, integrated circuit systems, field-programmable gate arrays (FPGAs), application-specific integrated circuits (ASICs), application-specific standard products (ASSPs), systems-on-a-chip (SoCs), payload-programmable logic devices (CPLDs), computer hardware, firmware, software, and / or combinations thereof. These various embodiments may include implementations in one or more computer programs that can be executed and / or interpreted on a programmable system including at least one programmable processor, which may be a dedicated or general-purpose programmable processor, capable of receiving data and instructions from a storage system, at least one input device, and at least one output device, and transmitting data and instructions to the storage system, the at least one input device, and the at least one output device.

[0093] Computer programs used to implement the methods of the present invention may be written in any combination of one or more programming languages. These computer programs may be provided to a processor of a general-purpose computer, a special-purpose computer, or other programmable data processing device, such that when executed by the processor, the computer programs cause the functions / operations specified in the flowcharts and / or block diagrams to be performed. The computer programs may be executed entirely on a machine, partially on a machine, or as a standalone software package, partially on a machine and partially on a remote machine, or entirely on a remote machine or server.

[0094] In the context of this invention, a computer-readable storage medium can be a tangible medium that may contain or store a computer program for use by or in conjunction with an instruction execution system, apparatus, or device. A computer-readable storage medium may include, but is not limited to, electronic, magnetic, optical, electromagnetic, infrared, or semiconductor systems, apparatus, or devices, or any suitable combination thereof. Alternatively, a computer-readable storage medium may be a machine-readable signal medium. More specific examples of machine-readable storage media include electrical connections based on one or more wires, portable computer disks, hard disks, random access memory (RAM), read-only memory (ROM), erasable programmable read-only memory (EPROM or flash memory), optical fibers, portable compact disk read-only memory (CD-ROM), optical storage devices, magnetic storage devices, or any suitable combination thereof.

[0095] To provide interaction with a user, the systems and techniques described herein can be implemented on an electronic device having: a display device (e.g., a CRT (cathode ray tube) or LCD (liquid crystal display) monitor) for displaying information to the user; and a keyboard and pointing device (e.g., a mouse or trackball) through which the user provides input to the electronic device. Other types of devices can also be used to provide interaction with the user; for example, feedback provided to the user can be any form of sensory feedback (e.g., visual feedback, auditory feedback, or tactile feedback); and input from the user can be received in any form (including sound input, voice input, or tactile input).

[0096] The systems and technologies described herein can be implemented in computing systems that include backend components (e.g., as data servers), or computing systems that include middleware components (e.g., application servers), or computing systems that include frontend components (e.g., user computers with graphical user interfaces or web browsers through which users can interact with implementations of the systems and technologies described herein), or any combination of such backend, middleware, or frontend components. The components of the system can be interconnected via digital data communication of any form or medium (e.g., communication networks). Examples of communication networks include local area networks (LANs), wide area networks (WANs), blockchain networks, and the Internet.

[0097] A computing system can include clients and servers. Clients and servers are generally located far apart and typically interact through communication networks. The client-server relationship is created by computer programs running on the respective computers and having a client-server relationship with each other. The server can be a cloud server, also known as a cloud computing server or cloud host, which is a hosting product within the cloud computing service system to address the shortcomings of traditional physical hosts and VPS services, such as high management difficulty and weak business scalability.

[0098] It should be understood that the various forms of processes shown above can be used, with steps reordered, added, or deleted. For example, the steps described in this invention can be executed in parallel, sequentially, or in different orders, as long as the desired result of the technical solution of this invention can be achieved, and this is not limited herein.

[0099] The specific embodiments described above do not constitute a limitation on the scope of protection of this invention. Those skilled in the art should understand that various modifications, combinations, sub-combinations, and substitutions can be made according to design requirements and other factors. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this invention should be included within the scope of protection of this invention.

Claims

1. A vehicle control method, characterized in that, include: During vehicle operation, the system acquires the water pump operation information of the vehicle's electric water pump and the component operation information of the associated components, including the thermal management controller valve, cooling fan, and engine water temperature sensor. Based on the pump operation information, fault detection is performed on the electric water pump, and based on the component operation information, fault detection is performed on the associated components; The vehicle is controlled based on the fault detection results of the electric water pump and the associated components; The step of controlling the vehicle based on the fault detection results of the electric water pump and the associated components includes: If a second opening stuck fault is detected in the thermal management controller valve, the engine coolant temperature detected by the engine coolant temperature sensor is lower than the preset temperature, and neither the cooling fan nor the electric water pump is faulty, the electric water pump is controlled to operate at a second speed, wherein the second speed is lower than the current speed of the electric water pump. If a second opening jamming fault is detected in the thermal management controller valve, the engine coolant temperature detected by the engine coolant temperature sensor is greater than or equal to the preset temperature, and neither the cooling fan nor the electric water pump is malfunctioning, the electric water pump is controlled to continue operating at the current speed.

2. The method according to claim 1, characterized in that, The method of controlling the vehicle based on the fault detection results of the electric water pump and the associated components further includes: If the fault detection result is a preset detection result, the electric water pump is controlled to operate at a first speed, wherein the first speed is greater than or equal to the current speed of the electric water pump, and the preset detection result is: The thermal management controller valve experiences a first-degree opening jamming fault, while the cooling fan, engine coolant temperature sensor, and electric water pump are all functioning normally; or... The cooling fan malfunctions, while the thermal management controller valve, the engine coolant temperature sensor, and the electric water pump are all functioning correctly; or, The engine coolant temperature sensor malfunctioned, while the thermal management controller valve, the cooling fan, and the electric water pump were all functioning normally.

3. The method according to claim 2, characterized in that, The fault detection of the associated component based on the component's operating information includes: If a motor drive-level fault is detected in the thermal management controller valve and the stuck position of the thermal management controller valve is less than a preset opening threshold, it is determined that the thermal management controller valve has experienced a first opening stuck fault. The motor drive-level fault includes at least one of the following: drive stage open circuit, drive chip overheating, drive stage short circuit, and abnormal drive voltage; or... If a control fault is detected in the thermal management controller valve, and the stuck position of the thermal management controller valve is detected to be less than a preset opening threshold, it is determined that the thermal management controller valve has experienced a first opening stuck fault.

4. The method according to claim 1, characterized in that, The fault detection of the associated component based on the component's operating information includes: If a control fault is detected in the thermal management controller valve, and the stuck position of the thermal management controller valve is detected to be greater than a preset opening threshold, it is determined that the thermal management controller valve has a second opening stuck fault.

5. The method according to claim 1, characterized in that, The method of controlling the vehicle based on the fault detection results of the electric water pump and the associated components further includes: If a malfunction is detected in the electric water pump, and the thermal management controller valve, the engine coolant temperature sensor, and the cooling fan are all functioning normally, a request is initiated to fully open the thermal management controller valve, control the cooling fan to operate at a preset power, and control the vehicle to limp, wherein the preset power is greater than or equal to the current operating power of the cooling fan.

6. The method according to claim 1, characterized in that, The fault detection of the electric water pump based on the water pump operation information includes: When a preset water pump fault is detected in the electric water pump, and the duration for which the difference between the target speed issued by the vehicle's electronic control unit and the actual feedback speed of the electric water pump is greater than a preset difference threshold exceeds a preset duration threshold, the electric water pump is determined to have malfunctioned. The preset water pump fault includes at least one of the following: electric water pump short circuit fault, electric water pump operating load too low, electric water pump stall, power supply circuit undervoltage, power supply circuit overvoltage, current over-limit, synchronous serial peripheral bus communication fault, and vehicle network bus communication fault.

7. The method according to claim 1, characterized in that, The fault detection of the associated component based on the component's operating information includes: If the thermal management controller valve is not faulty, but the valve opening of the thermal management controller valve is greater than a third preset threshold, the actual speed of the electric water pump is greater than a preset speed threshold, the duty cycle of the fan is greater than a preset duty cycle threshold, and the engine water temperature detected by the engine water temperature sensor is greater than a preset water temperature threshold or the rise slope of the engine water temperature is greater than a preset slope threshold, then the cooling fan is determined to be faulty.

8. The method according to claim 1, characterized in that, Also includes: If at least two of the associated components, namely the thermal management controller valve, the cooling fan, the engine coolant temperature sensor, and the electric water pump, are detected to be malfunctioning, the vehicle is controlled to limp.

9. A vehicle control device, characterized in that, include: The information acquisition module is used to acquire the water pump operation information of the vehicle's electric water pump and the component operation information of the associated components related to the electric water pump during vehicle operation. The associated components include a thermal management controller valve, a cooling fan, and an engine water temperature sensor. The fault detection module is used to detect faults in the electric water pump based on the water pump operation information, and to detect faults in the associated components based on the component operation information. A vehicle control module is used to control the vehicle based on the fault detection results of the electric water pump and the associated components; Specifically, the vehicle control module is used for: If a second opening stuck fault is detected in the thermal management controller valve, the engine coolant temperature detected by the engine coolant temperature sensor is lower than the preset temperature, and neither the cooling fan nor the electric water pump is faulty, the electric water pump is controlled to operate at a second speed, wherein the second speed is lower than the current speed of the electric water pump. If a second opening jamming fault is detected in the thermal management controller valve, the engine coolant temperature detected by the engine coolant temperature sensor is greater than or equal to the preset temperature, and neither the cooling fan nor the electric water pump is malfunctioning, the electric water pump is controlled to continue operating at the current speed.

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