Vehicle control method, device and equipment and readable storage medium

Abstract

The embodiment of the invention provides a vehicle control method, device and equipment and a readable storage medium, and relates to the vehicle-mounted field. The method comprises the steps that the closing condition of a front cabin cover of a vehicle is obtained; under the condition that the closing condition indicates that the front hatch cover is in the open state, the environment temperature of a three-way valve in the vehicle is obtained, and the three-way valve is a valve device arranged in the vehicle and used for controlling the flow direction and / or the flow direction proportion of fluid in the vehicle; acquiring gear data of the vehicle; according to the environment temperature and the gear data, the valve duty ratio of the three-way valve is controlled, and the valve duty ratio is used for indicating the opening degree of the three-way valve.

Description

Technical Field

[0001] This application relates to the field of vehicle systems, and in particular to a vehicle control method, apparatus, device, and readable storage medium. Background Technology

[0002] With the rapid development of the new energy vehicle industry, plug-in hybrid electric vehicles (PHEVs), with their "dual-mode" characteristics, have become an important option for the transition from traditional gasoline vehicles to pure electric vehicles. PHEVs possess the zero-emission advantage of pure electric mode and can switch to hybrid mode when the battery is low, alleviating users' range anxiety to some extent.

[0003] In related technologies, during the maintenance of hybrid high-voltage vehicles, it is necessary to perform a high-voltage power-off operation in advance to disconnect the high-voltage battery circuit in order to facilitate subsequent maintenance.

[0004] However, in certain scenarios (such as slow charging mode), the water pump corresponding to the power supply device in hybrid high-voltage vehicles may work normally, resulting in high water pump power consumption. This can cause the power supply device to heat up rapidly, leading to unexpected vehicle start-up and increasing the risk of vehicle maintenance to some extent. Summary of the Invention

[0005] This application provides a vehicle control method, apparatus, device, and readable storage medium. The technical solution is as follows:

[0006] In one aspect, a vehicle control method is provided, the method comprising:

[0007] The closure status of the vehicle's hood is obtained, and the closure status is used to indicate whether the hood is in an open or closed state;

[0008] When the closure status indicates that the hood is in the open state, the ambient temperature of the three-way valve inside the vehicle is obtained. The three-way valve is a valve device installed inside the vehicle to control the flow direction and / or flow ratio of fluids inside the vehicle.

[0009] Obtain the gear position data of the vehicle;

[0010] Based on the ambient temperature and the gear position data, the valve duty cycle of the three-way valve is controlled, and the valve duty cycle is used to indicate the degree of opening of the three-way valve.

[0011] On the other hand, a vehicle control device includes:

[0012] The acquisition module is used to acquire the closure status of the vehicle's hood, which indicates whether the hood is in an open or closed state.

[0013] The acquisition module is also used to acquire the ambient temperature of the three-way valve inside the vehicle when the closure status indicates that the hood is in the open state. The three-way valve is a valve device installed inside the vehicle to control the flow direction and / or flow ratio of fluid inside the vehicle.

[0014] The acquisition module is also used to acquire the gear position data of the vehicle;

[0015] The control module is used to control the valve duty cycle of the three-way valve according to the ambient temperature and the gear position data. The valve duty cycle is used to indicate the degree of opening of the three-way valve.

[0016] On the other hand, a computer device is provided, the computer device including a processor and a memory, the memory storing at least one program, the at least one program being loaded and executed by the processor to implement the vehicle control method as described above.

[0017] On the other hand, a computer-readable storage medium is provided, wherein at least one segment is stored in the storage medium, the at least one segment being loaded and executed by a processor to implement the vehicle control method as described above.

[0018] On the other hand, a computer program product or computer program is provided, which includes computer instructions stored in a computer-readable storage medium, wherein a processor of a computer device reads the computer instructions from the computer-readable storage medium and executes the computer instructions, causing the computer device to perform to implement the vehicle control method as described above.

[0019] The beneficial effects of the technical solutions provided in this application include at least the following:

[0020] When the hood is open, the control strategy for the duty cycle of the three-way valve is determined by the ambient temperature of the three-way valve and the vehicle's gear position data. This enables the power supply unit in the associated vehicle to remain inactive, preventing the power supply unit from being accidentally started due to high temperatures when the hood is open. This further improves the safety and efficiency of maintenance. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of this application, 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 this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1This application shows a structural block diagram of a computer system provided in an exemplary embodiment;

[0023] Figure 2 A flowchart of a vehicle control method provided in an exemplary embodiment of this application is shown;

[0024] Figure 3 A flowchart of a vehicle control method provided in another exemplary embodiment of this application is shown;

[0025] Figure 4 A flowchart of a vehicle control method provided in yet another exemplary embodiment of this application is shown;

[0026] Figure 5 A flowchart of a vehicle control method provided in another exemplary embodiment of this application is shown;

[0027] Figure 6 A structural block diagram of a vehicle control device provided in another exemplary embodiment of this application is shown;

[0028] Figure 7 A structural block diagram of a computer device provided in an exemplary embodiment of this application is shown. Detailed Implementation

[0029] To make the objectives, technical solutions, and advantages of this application clearer, the embodiments of this application will be described in further detail below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0030] In this application, the terms "first" and "second" are used to distinguish between identical or similar items that have essentially the same function. It should be understood that there is no logical or temporal dependency between "first" and "second", nor is there any limitation on the quantity or execution order.

[0031] Figure 1 A structural block diagram of a computer system provided in an exemplary embodiment of this application is shown. The execution process of the vehicle control method provided in this embodiment will be described based on this structural block diagram. The computer system includes an in-vehicle terminal 10. The following process is described using the in-vehicle terminal 10 as the execution entity.

[0032] Optionally, the vehicle terminal 10 includes at least one of the following: a gasoline vehicle, an electric vehicle, a hybrid vehicle, a fuel cell vehicle, a solar vehicle, etc., wherein a hybrid vehicle refers to a combination of a gasoline vehicle and an electric vehicle.

[0033] In this embodiment, the vehicle terminal 10 is implemented as a hybrid electric vehicle as an example for illustration.

[0034] Optionally, the vehicle terminal 10 includes at least two in-vehicle components, including but not limited to the hood, three-way valve, steering wheel, body glass, body frame, door, front / rearview mirror, body pillar, etc.

[0035] Optionally, the vehicle terminal 10 may also include at least one of a vehicle controller, a motor controller, and an engine controller.

[0036] Among them, the vehicle controller, as the decision-making layer of the vehicle terminal 10, is mainly responsible for the energy management strategy, switching of various modes, and fault diagnosis of the vehicle terminal 10; the motor controller and engine controller, as the coordination layer of the vehicle terminal 10, are mainly responsible for driving the motor of the vehicle terminal 10; the engine controller is mainly responsible for responding to the speed / torque requests of the vehicle terminal 10, and is used to request the vehicle terminal 10 to perform operations such as rapid start-stop and catalytic converter heating.

[0037] In some embodiments, the vehicle terminal 10 also includes various sensors, which are used to detect the component status of different in-vehicle components, such as: a speed sensor for detecting the driving speed of the vehicle terminal 10, a temperature sensor for detecting the temperature of the engine / generator inside the vehicle terminal 10, etc.

[0038] In this embodiment of the application, the vehicle terminal 10 detects the closure status of the hood, wherein the hood is in an open state or a closed state.

[0039] In response to the vehicle terminal 10 determining that the hood is open, the vehicle terminal 10 obtains the ambient temperature of the three-way valve and the current gear position data of the vehicle terminal 10.

[0040] Based on ambient temperature and gear position data, the vehicle terminal 10 controls the duty cycle of the three-way valve to close the water pump control valve, cut off coolant circulation, and indirectly suppress unexpected starting demands caused by rapid heating of the vehicle terminal's power supply unit. For example, the duty cycle of the first valve in the three-way valve can be switched from 20% to 40%, the duty cycle of the second valve in the three-way valve can be switched from 100% to 0%, and the duty cycle of the second valve in the three-way valve can be switched from 0% to 100%.

[0041] It should be noted that the above-mentioned control of the valve duty cycle of the three-way valve is only an example, and no specific limitation is made on the control method and control strategy of the valve duty cycle of the three-way valve.

[0042] In another optional embodiment, the vehicle terminal 10 also includes a vehicle screen for displaying prompts about the valve duty cycle of the three-way valve, such as: "The valve duty cycle of the three-way valve has been switched to 100%!" etc.

[0043] In another optional embodiment, the vehicle control method provided in this application can also be implemented by the vehicle terminal 10 and the vehicle server. The following description takes the vehicle server as the execution subject.

[0044] As an illustration, the vehicle terminal 10 sends its own vehicle information to the vehicle server.

[0045] The vehicle information includes the hood's closure status, the ambient temperature of the three-way valve, and gear position data, among others.

[0046] The on-board server receives vehicle information and determines that the hood is in the open state. Based on the ambient temperature and gear position data, it determines the control strategy for the three-way valve. This control strategy refers to the strategy of adjusting the valve duty cycle of the three-way valve.

[0047] The vehicle server sends the control strategy to the vehicle terminal 10. The vehicle terminal 10 parses the control strategy and adjusts the valve duty cycle of the three-way valve according to the instructions in the control strategy.

[0048] In some embodiments, the vehicle terminal 10 parses the control strategy and displays the control strategy on the vehicle screen of the vehicle terminal 10 in the form of text, video, audio, pictures, etc.

[0049] It should be noted that all information (including but not limited to vehicle information), data (including but not limited to data used for analysis, stored data, and displayed data), and signals involved in this application have been authorized by the user or by all parties in full, and the collection, use, and processing of related data must comply with the relevant laws, regulations, and standards of the relevant regions. For example, the operational data and account information involved in this application were obtained with full authorization.

[0050] To further explain, this application may display a prompt interface, pop-up window, or output voice prompts before and during the collection of user-related data (e.g., vehicle information involved in this application). These prompt interfaces, pop-ups, or voice prompts are used to inform the user that their relevant data is being collected. This ensures that the application only begins the steps for collecting user-related data after receiving confirmation from the user regarding the prompt interface or pop-up window; otherwise (i.e., without receiving confirmation from the user), the steps for collecting user-related data end, meaning no user-related data is collected. In other words, all user data collected in this application is collected with the user's consent and authorization, and the collection, use, and processing of related user data must comply with the relevant laws, regulations, and standards of the relevant regions.

[0051] Based on the above, the vehicle control method provided in the embodiments of this application will be described.

[0052] Figure 2 This is a flowchart of a vehicle control method provided in an exemplary embodiment of this application. In this embodiment, the method is executed by an on-board terminal (vehicle), such as... Figure 2 As shown, the method includes the following steps.

[0053] Step 200: Obtain the closure status of the vehicle's front hood.

[0054] Optionally, the vehicle is implemented as a hybrid vehicle, and the vehicle includes a front hood.

[0055] The hood is a cover located at the front of the vehicle that can be opened upwards, used to seal the engine compartment or motor compartment inside the vehicle.

[0056] Optionally, the hood needs to be opened / reopened in the following scenarios.

[0057] First, the front hood must be opened.

[0058] 1) Check or replenish the fluids in the power supply unit, including but not limited to brake fluid, coolant, power steering fluid, and windshield washer fluid.

[0059] 2) Replace consumable parts in the front area of ​​the vehicle, including but not limited to air filters, cabin air filters, fuses, relays, and windshield washer fluid pumps, etc.

[0060] 3) Jump-start or replace the battery.

[0061] 4) Install a trailer hitch or tow ring.

[0062] 5) Inspect the source of the fault. Indicative examples include a broken belt in the power supply unit, leaks, tangled wiring harnesses, unusual odors, smoke, etc.

[0063] Second, there is a need to open the front hood.

[0064] 1) If the user needs to use the vehicle for a long time, that is, the vehicle is in the process of long-term use, the hood needs to be opened to check the components before using the vehicle, such as checking the engine oil, coolant and pipeline leaks.

[0065] 2) Add non-hydrating accessories. This is illustrative of adding a dashcam, external electronic devices, etc.

[0066] 3) Vehicle performance testing. This includes, for example, checking the oil temperature sensor, installing the oil catch can, etc.

[0067] It should be noted that the above scenarios are merely illustrative examples, and this application does not specifically limit the scenarios of opening the hood.

[0068] The closure status of the vehicle's hood is used to indicate whether the hood is in an open or closed state.

[0069] In the embodiments of this application, the method for determining the closure status of the front hood includes, but is not limited to, any one of the following methods.

[0070] 1) An image acquisition unit is installed on the vehicle's body frame.

[0071] By capturing images of the environment in front of the vehicle using an image acquisition unit, this environment can be understood as the view of the front of the vehicle.

[0072] Identify the material information of objects in the environmental image. Determine the closure status based on the matching of the material information with the vehicle's preset material information.

[0073] If the material information indicated in the environmental display matches the preset material information, the hood is determined to be in the open state; if the material information indicated in the environmental display does not match the preset material information, the hood is determined to be in the closed state.

[0074] In this embodiment, an artificial intelligence model is used to identify the material information of objects in an environmental scene. This artificial intelligence model is used to identify the material information of objects in image data. The environmental scene is input into the artificial intelligence model, which divides multiple objects in the environmental scene into regions, resulting in multiple image sub-regions. Image features of each image sub-region are extracted, and the matching degree between the image features and multiple candidate material information is determined. Candidate material information with a matching degree higher than a preset value is determined as the material information of the image sub-region.

[0075] 2) A pressure sensor is installed in the closed area of ​​the vehicle's hood.

[0076] The system receives multiple pressure data collected by a pressure sensor. If the acquisition time corresponding to two adjacent pressure data points is greater than a preset duration, the system determines that the hood is in the open state. If the acquisition time corresponding to two adjacent pressure data points is less than or equal to a preset duration, the system determines that the hood is in the closed state.

[0077] 3) A proximity sensor is installed in the closed area of ​​the vehicle's hood. The proximity sensor is used to monitor the distance between the hood and the front body frame of the vehicle.

[0078] The system receives distance data collected by the proximity sensor. If the distance data is greater than a preset distance value, the system determines that the hood is in the open state; if the distance data is less than or equal to the preset distance value, the system determines that the hood is in the closed state.

[0079] The above methods are merely exemplary data, and other methods can also be used to determine the closure status of the hood, which is not limited in this application.

[0080] Step 210: When the hood is in the open position as indicated by the closing status indicator, obtain the ambient temperature of the three-way valve inside the vehicle.

[0081] Optionally, the vehicle may also include a three-way valve, which is a valve device installed in the vehicle to control the direction and / or proportion of fluid flow within the vehicle.

[0082] Indicatively, the three-way valve in a hybrid vehicle is used to direct the flow of coolant / refrigerant to the first valve, the second valve, or both the first and second valves, thereby enabling heat management between the engine, motor, battery, and passenger compartment.

[0083] In this embodiment, the three-way valve includes a first valve, a second valve, and a third valve.

[0084] The three-way valves connected to different management systems within the vehicle are different.

[0085] When the management system is implemented as an engine thermal management system, the first valve port is connected to the water outlet of the engine block / cylinder head, the second valve port is connected to the engine main radiator, and the third valve port is connected to the heater core / battery. The function of this management system is to quickly warm up the engine through the third valve port when the vehicle is cold-started, and then switch to the second valve port for heat dissipation after warming up. At the same time, the residual heat is sent to the passenger compartment or battery pack through the third valve port.

[0086] When the management system is implemented as a battery thermal management system, the first valve port is connected to the battery pack outlet, the second valve port is connected to the battery radiator / plate heat exchanger, and the third valve port is connected to the engine to achieve small-loop water return. The function of this management system is to introduce hot water from the engine into the battery pack for heating when the vehicle is at a low temperature, and to direct the battery heat to the radiator or the air conditioning refrigerant circuit for cooling when the vehicle is at a high temperature.

[0087] In another scenario, when the three-way valve is implemented as a motor / charger cooling three-way valve, the first valve port is connected to the motor and charger outlet, the second valve port is connected to the motor radiator, and the third valve port is connected to the bypass pipeline. In this scenario, when the vehicle is in driving mode, cooling is achieved through the second valve port; when the vehicle is in charging mode, the third valve port is bypassed, and the cooling water no longer passes through the motor radiator.

[0088] Based on the above, the three-way valve is equivalent to an electronic switch in the vehicle's water system. One end is connected to a heat source (such as the engine, motor, and battery), the other end is connected to the radiator, and the third end is connected to the user (such as the heater core or heat exchanger). The flow of heat inside the vehicle is controlled by the vehicle controller (or other controllers).

[0089] In this embodiment, a temperature sensor is provided at the three-way valve. Optionally, temperature sensors are provided at each of the three valve ports within the three-way valve to detect the temperature of each port separately.

[0090] Based on step 200 above, when the front hood is in the open state, the temperature data collected by the temperature sensor is obtained, and this temperature data is determined as the ambient temperature of the three-way valve.

[0091] In some embodiments, temperature data corresponding to three temperature sensors are acquired, and the average temperature of the temperature data is determined as the ambient temperature of the three-way valve; or, the largest temperature data among the three temperature data is determined as the ambient temperature of the three-way valve; or, the smallest temperature data among the three temperature data is determined as the ambient temperature of the three-way valve, and this application does not limit this.

[0092] Step 220: Obtain the vehicle's gear data.

[0093] Optionally, the gear position is determined based on the number of gear stages actually engaged inside the transmission, or the gear position data is based on the gear position perceived by the user through the shifter or control strategy; this application does not limit this.

[0094] In the embodiments of this application, the gear position includes, but is not limited to, any one of neutral (N), reverse (R), parking (P), low gear (L), etc.

[0095] The gear currently being used by the vehicle is determined as the vehicle's gear data.

[0096] Step 230: Control the valve duty cycle of the three-way valve based on the ambient temperature and gear position data.

[0097] The valve duty cycle is used to indicate the degree of opening of the three-way valve. The valve duty cycle is between 0% and 100%. 0% means that the three-way valve is in a fully closed state, and 100% means that the three-way valve is in a fully open state.

[0098] In this embodiment, in response to the ambient temperature being within a preset temperature range and the gear data not matching the preset gear, the inlet temperature of the three-way valve is obtained. The inlet temperature refers to the temperature of the fluid flowing into the three-way valve, which can be measured by a temperature sensor installed at the valve port of the three-way valve. The valve duty cycle of the three-way valve is controlled according to the inlet temperature.

[0099] For illustrative purposes, the preset temperature range is -4℃ to 35℃, and the preset gear is P gear. That is, when the ambient temperature is between -4℃ and 35℃ and the gear is not P gear, the valve duty cycle of the three-way valve is controlled according to the intake air temperature.

[0100] In some embodiments, in response to the ambient temperature being within a preset temperature range and the gear data not matching the preset gear, the intake air temperature corresponding to each of the three valve ports in the three-way valve is obtained, and the valve duty cycle of each valve port is controlled according to the intake air temperature corresponding to each valve port.

[0101] To illustrate, when the intake air temperature is greater than the first value, the valve duty cycle at the valve port is increased; when the intake air temperature is less than or equal to the first value, the valve duty cycle at the valve port is decreased.

[0102] In response to the ambient temperature being lower than the preset temperature range and / or the gear data matching the preset gear, the engine speed data of the power supply unit in the vehicle and the coolant capacity data in the vehicle are obtained; based on the engine speed data and the capacity data, the valve duty cycle of the three-way valve is controlled.

[0103] In some embodiments, in response to the speed data being less than a preset speed requirement and the capacity data being greater than or equal to a preset threshold, the valve duty cycle of the three-way valve is controlled to a first value, and the second valve inside the three-way valve is closed; in response to the speed data being greater than or equal to the preset speed requirement and / or the capacity data being less than the preset threshold, the valve duty cycle of the three-way valve is controlled to a second value, and the second valve is opened.

[0104] For illustrative purposes, the preset speed is 500 rpm, and the preset threshold is data pre-set by relevant personnel. When the engine speed is less than 500 rpm and the capacity data is greater than or equal to the preset threshold, the duty cycle of the three-way valve is controlled to be 90%, and the second valve port of the three-way valve is closed. When the engine speed is greater than or equal to 500 rpm and / or the capacity data is less than the preset threshold, the duty cycle of the three-way valve is controlled to be 66.7%, and the second valve port of the three-way valve is opened.

[0105] In some embodiments, the initial state of the three-way valve is that all three valve ports are fully open, and the valve duty cycle controlling the three-way valve is 66.67%.

[0106] In the above embodiments, comparing the capacity data with a preset threshold is to facilitate determining whether there is a request to add coolant to the vehicle. That is, the existence of a request to add coolant means that the current capacity data is less than the preset threshold, and the absence of a request to add coolant means that the current capacity data is greater than the preset threshold.

[0107] In this embodiment, when a refueling request exists, the vehicle controller within the vehicle controls the valve duty cycle of the three-way valve; when no refueling request exists, the engine management system (EMS) within the vehicle controls the valve duty cycle of the three-way valve. Illustratively, the refueling request is implemented as the code "CLM_CoolantFillReq = 0x1:Request".

[0108] In another optional embodiment, when the hood is indicated to be open, the vehicle's charging status is acquired, indicating whether the vehicle is charging or not. In response to the charging status indicating the vehicle is charging, the charging speed is acquired, indicating the vehicle's battery level increase over a preset time period; based on the charging speed, the duty cycle of the three-way valve is controlled.

[0109] In this embodiment of the application, when the charging speed is less than the preset charging speed, the valve duty cycle of the three-way valve is controlled to a first value, and the second valve inside the three-way valve is closed.

[0110] In another alternative embodiment, the valve state of the three-way valve can be controlled without being affected by the hood's closure status. The ambient temperature of the three-way valve and the vehicle's gear position data can be directly obtained, and the valve duty cycle of the three-way valve can be determined based on the ambient temperature and gear position data.

[0111] In this embodiment, when the hood is open, the control strategy for the valve duty cycle of the three-way valve is determined by the ambient temperature of the three-way valve and the vehicle's gear position data. This enables the power supply unit in the associated vehicle to remain inactive, avoiding the situation where the power supply unit is unexpectedly started due to high temperature when the hood is open, and further improving the safety and efficiency of maintenance.

[0112] Figure 3 This is a flowchart of a vehicle control method provided in another exemplary embodiment of this application. In this embodiment, the method is executed by an on-board terminal (vehicle), such as... Figure 3 As shown, the method includes the following steps.

[0113] Step 300: Obtain the vehicle's speed while the hood is open.

[0114] Optionally, the vehicle is implemented as a hybrid vehicle, and the vehicle includes a front hood.

[0115] The hood is a cover located at the front of the vehicle that can be opened upwards, used to seal the engine compartment or motor compartment inside the vehicle.

[0116] The closure status of the vehicle's hood is used to indicate whether the hood is in an open or closed state.

[0117] In the embodiments of this application, the method for determining the closure status of the front hood includes, but is not limited to, any one of the following methods.

[0118] 1) An image acquisition unit is installed on the vehicle's body frame.

[0119] 2) A pressure sensor is installed in the closed area of ​​the vehicle's hood.

[0120] 3) A proximity sensor is installed in the closed area of ​​the vehicle's hood. The proximity sensor is used to monitor the distance between the hood and the front body frame of the vehicle.

[0121] The specific determination process for the above three methods can be found in step 200 above, and will not be repeated here.

[0122] Optionally, a speed sensor is installed inside the vehicle to determine the vehicle's speed.

[0123] Step 310: Determine the operating status of the engine inside the vehicle based on the driving speed.

[0124] The operating status includes normal operation status and stopped operation status.

[0125] Optionally, the engine's operating state is determined in response to a travel speed less than or equal to a preset speed. For example, when the travel speed is ≤4 km / h and the engine's current operating state is stopped, a prohibition command is sent to the engine. This prohibition command controls the engine to remain off for a preset time period. When the travel speed is ≤4 km / h and the engine's current operating state is normal, a normal operation command is sent to the engine. This normal operation command controls whether the engine is allowed to operate normally or be stopped.

[0126] Optionally, in response to a driving speed exceeding a preset speed, a normal operation command is sent to the engine. The normal operation command is used to control whether the engine is allowed to operate normally or stop operating.

[0127] In this embodiment, when the hood is open, the control strategy for the valve duty cycle of the three-way valve is determined by the ambient temperature of the three-way valve and the vehicle's gear position data. This enables the power supply unit in the associated vehicle to remain inactive, avoiding the situation where the power supply unit is unexpectedly started due to high temperature when the hood is open, and further improving the safety and efficiency of maintenance.

[0128] Figure 4 This is a flowchart of a vehicle control method provided in another exemplary embodiment of this application. In this embodiment, the method is executed by an on-board terminal (vehicle), such as... Figure 4 As shown, the method includes the following steps.

[0129] Step 400: When the hood is open, acquire the vehicle's speed, gear position data, and the state of charge of the vehicle's battery.

[0130] Optionally, the vehicle is implemented as a hybrid vehicle, and the vehicle includes a front hood.

[0131] The hood is a cover located at the front of the vehicle that can be opened upwards, used to seal the engine compartment or motor compartment inside the vehicle.

[0132] The closure status of the vehicle's hood is used to indicate whether the hood is in an open or closed state.

[0133] In the embodiments of this application, the method for determining the closure status of the front hood includes, but is not limited to, any one of the following methods.

[0134] 1) An image acquisition unit is installed on the vehicle's body frame.

[0135] 2) A pressure sensor is installed in the closed area of ​​the vehicle's hood.

[0136] 3) A proximity sensor is installed in the closed area of ​​the vehicle's hood. The proximity sensor is used to monitor the distance between the hood and the front body frame of the vehicle.

[0137] The specific determination process for the above three methods can be found in step 200 above, and will not be repeated here.

[0138] Optionally, a speed sensor is installed inside the vehicle to determine the vehicle's speed.

[0139] Optionally, the gear position is determined based on the number of gear stages actually engaged inside the transmission, or the gear position data is based on the gear position perceived by the user through the shifter or control strategy; this application does not limit this.

[0140] In the embodiments of this application, the gear position includes, but is not limited to, any one of neutral (N), reverse (R), parking (P), low gear (L), etc.

[0141] The gear currently being used by the vehicle is determined as the vehicle's gear data.

[0142] Optionally, the state of charge (SOC) is used to indicate the percentage of battery charge in the vehicle. The SOC is determined by the ratio of the battery's current remaining available charge to its rated total charge. When the SOC is 0%, it means the battery is completely discharged and has reached the minimum permissible voltage; when the SOC is 100%, it means the battery is fully charged and has reached the maximum permissible charging voltage.

[0143] Step 410: Determine the high voltage across the entire vehicle based on the driving speed, gear data, and state of charge.

[0144] Optionally, when the driving speed is less than the preset speed and the gear data is in P / N gear (that is, the vehicle is in the power transmission system ready, i.e., high voltage ready or vehicle ready), the vehicle's state of charge can be obtained.

[0145] When the state of charge is lower than a preset charge threshold, the high voltage of the whole vehicle is controlled.

[0146] Specifically, controlling the reduction of high voltage in the vehicle refers to the entire process of sequentially disconnecting the high-voltage DC bus of the drive system from the power battery terminal, thereby bringing the vehicle into a state free of high-voltage danger. For illustration, this means controlling the reduction of high voltage in the vehicle when the battery's state of charge falls below a preset threshold of 15%.

[0147] In this embodiment, when the hood is open, the control strategy for the valve duty cycle of the three-way valve is determined by the ambient temperature of the three-way valve and the vehicle's gear position data. This enables the power supply unit in the associated vehicle to remain inactive, avoiding the situation where the power supply unit is unexpectedly started due to high temperature when the hood is open, and further improving the safety and efficiency of maintenance.

[0148] Figure 5 This is a flowchart of a vehicle control method provided in another exemplary embodiment of this application. In this embodiment, the method is executed by an on-board terminal (vehicle), such as... Figure 5 As shown, the method includes the following steps.

[0149] Step 500: Determine whether a diagnostic service request has been received from the security device.

[0150] Optionally, safety equipment refers to equipment that performs functions such as maintenance, fire fighting, and rescue, or equipment that transmits relevant instructions for maintenance, fire fighting, and rescue.

[0151] The safety equipment can be a component inside the vehicle or an external device; this application does not limit this.

[0152] In this embodiment, the safety device and the vehicle communicate via a wireless communication network or a wired communication network.

[0153] A diagnostic service request is a command message sent by a safety device to the vehicle controller via a preset protocol, requesting the vehicle controller to perform all relevant diagnostic functions, such as reading data, clearing fault codes, controlling actuators, or upgrading onboard software.

[0154] Optionally, if the vehicle receives a diagnostic service request from the safety device, it performs the following step 510; if it does not receive a diagnostic service request from the safety device, the vehicle maintains its current state.

[0155] Step 510: Control the high voltage on the entire vehicle and send a high voltage command to the safety equipment.

[0156] Optionally, controlling the high voltage on the vehicle refers to connecting the high-voltage DC bus of the power battery to the inverter and high-voltage load according to a safe sequence, so that the vehicle can enter a drivable state and the power battery is charged.

[0157] In this embodiment, when the hood is open, the control strategy for the valve duty cycle of the three-way valve is determined by the ambient temperature of the three-way valve and the vehicle's gear position data. This enables the power supply unit in the associated vehicle to remain inactive, avoiding the situation where the power supply unit is unexpectedly started due to high temperature when the hood is open, and further improving the safety and efficiency of maintenance.

[0158] In conjunction with the above embodiments, the four scenarios involved in this application are: power supply unit start-up and shutdown management when the hood is open; vehicle high-voltage power-off management when the hood is open and the vehicle is under low charge; management of maintenance mode triggered by external devices when the hood is open; and a scenario where the power supply unit is not started by controlling the valve duty cycle of the three-way valve when the hood is open. These enrich the scenario control for vehicle off-line inspection and after-sales maintenance assistance, and can better ensure the safety of after-sales personnel. On the one hand, if maintenance mode is detected when the hood is open, the coolant circulation can be switched by closing the water pump control valve, indirectly suppressing the unexpected start-up demand caused by the rapid temperature rise of the power supply unit, and reducing the safety risk of maintenance to a certain extent. On the other hand, the power supply unit drive water pump can work independently when the high-voltage system is running, meeting the maintenance scenario requirements of power supply unit shutdown but high-voltage power-on, and is compatible with the high-voltage system to a certain extent in maintenance mode. Furthermore, by feeding back the valve status to the vehicle controller, if an abnormality is detected, an alarm can be triggered and the operation of the power supply unit can be displayed, enhancing the safety of maintenance.

[0159] See Figure 6 The diagram illustrates a structural block diagram of a vehicle control device provided in another exemplary embodiment of this application. The device is executed by an on-board terminal and includes the following components.

[0160] The acquisition module 600 is used to acquire the closure status of the vehicle's hood, which indicates whether the hood is in an open or closed state.

[0161] The acquisition module 600 is also used to acquire the ambient temperature of the three-way valve inside the vehicle when the closing condition indicates that the hood is in the open state. The three-way valve is a valve device installed inside the vehicle to control the flow direction and / or flow ratio of fluid inside the vehicle.

[0162] The acquisition module 600 is also used to acquire the gear position data of the vehicle;

[0163] The control module 610 is used to control the valve duty cycle of the three-way valve according to the ambient temperature and the gear data, wherein the valve duty cycle is used to indicate the degree of opening of the three-way valve.

[0164] In some embodiments, the acquisition module 600 is further configured to, in response to the ambient temperature being within a preset temperature range and the gear data not matching the preset gear, acquire the intake temperature of the three-way valve, wherein the intake temperature refers to the temperature of the fluid flowing into the three-way valve; and control the valve duty cycle of the three-way valve according to the intake temperature.

[0165] The acquisition module 600 is further configured to acquire the rotational speed data of the power supply unit in the vehicle and the capacity data of the coolant in the vehicle in response to the ambient temperature being lower than the preset temperature range and / or the gear data matching the preset gear.

[0166] The control module 610 is used to control the valve duty cycle of the three-way valve based on the rotational speed data and the capacity data.

[0167] In some embodiments, the control module 610 is configured to, in response to the rotational speed data being less than a preset rotational speed requirement and the capacity data being greater than or equal to a preset threshold, control the valve duty cycle of the three-way valve to a first value and close the second valve within the three-way valve;

[0168] The control module 610 is configured to control the valve duty cycle of the three-way valve to a second value and open the second valve in response to the speed data being greater than or equal to the preset speed requirement and / or the capacity data being less than the preset threshold.

[0169] In some embodiments, the acquisition module 600 is further configured to acquire the charging status of the vehicle when the closing status indicates that the hood is in the open state, the charging status being used to indicate whether the vehicle is in a charging state or not in a charging state.

[0170] The acquisition module 600 is further configured to acquire the charging speed of the vehicle in response to the charging status indicating that the vehicle is in the charging state, wherein the charging speed is used to indicate the increase in the vehicle's battery level within a preset time period.

[0171] The control module 610 is used to control the valve duty cycle of the three-way valve according to the charging speed.

[0172] In some embodiments, an image acquisition unit is provided at the vehicle body frame;

[0173] The acquisition module 600 is also used to capture an image of the environment in front of the vehicle through the image acquisition unit;

[0174] The acquisition module 600 is also used to identify the material information of objects present in the environmental image;

[0175] The acquisition module 600 is further configured to determine the closure status based on the matching of the material information with the preset material information of the vehicle.

[0176] In this embodiment, when the hood is open, the control strategy for the valve duty cycle of the three-way valve is determined by the ambient temperature of the three-way valve and the vehicle's gear position data. This enables the power supply unit in the associated vehicle to remain inactive, avoiding the situation where the power supply unit is unexpectedly started due to high temperature when the hood is open, and further improving the safety and efficiency of maintenance.

[0177] Figure 7 This illustration shows a structural block diagram of a computer device 700 provided in an exemplary embodiment of this application. The computer device 700 can be a portable mobile terminal, such as a smartphone, tablet computer, MP3 player (Moving Picture Experts Group Audio Layer III), MP7 player (Moving Picture Experts Group Audio Layer IV), laptop computer, or desktop computer. The computer device 700 may also be referred to as a user device, portable terminal, laptop terminal, desktop terminal, or other names. Optionally, the computer device 700 can also be implemented as a mobile device, such as a vehicle-mounted terminal or other portable smart terminal.

[0178] Typically, computer device 700 includes a processor 701 and a memory 702.

[0179] Processor 701 may include one or more processing cores, such as a 7-core processor. Processor 701 may be implemented using at least one hardware form of DSP (Digital Signal Processing), FPGA (Field-Programmable Gate Array), or PLA (Programmable Logic Array). Processor 701 may also include a main processor and a coprocessor. The main processor, also known as a CPU (Central Processing Unit), is used to process data in the wake-up state; the coprocessor is a low-power processor used to process data in the standby state. In some embodiments, processor 701 may integrate a GPU (Graphics Processing Unit), which is responsible for rendering and drawing the content to be displayed on the screen. In some embodiments, processor 701 may also include an AI (Artificial Intelligence) processor, which is used to handle computational operations related to machine learning.

[0180] The memory 702 may include one or more computer-readable storage media, which may be non-transitory. The memory 702 may also include high-speed random access memory and non-volatile memory, such as one or more disk storage devices or flash memory devices. In some embodiments, the non-transitory computer-readable storage media in the memory 702 are used to store at least one instruction, which is executed by the processor 701 to implement the model training method or behavior encoding method provided in the method embodiments of this application.

[0181] This application also provides a computer-readable storage medium storing at least one instruction, at least one program, a code set, or an instruction set, wherein the at least one instruction, the at least one program, the code set, or the instruction set is loaded and executed by a processor to implement the vehicle control method provided in the above-described method embodiments.

[0182] This application provides a computer program product or computer program that includes computer instructions stored in a computer-readable storage medium. A processor of a computer device reads the computer instructions from the computer-readable storage medium and executes the computer instructions, causing the computer device to perform the vehicle control method provided in the above-described method embodiments.

[0183] Those skilled in the art will understand that all or part of the steps of the above embodiments can be implemented by hardware, or by a program instructing related hardware. The program can be stored in a computer-readable storage medium, such as a read-only memory, a disk, or an optical disk. The above descriptions are merely optional embodiments of this application and are not intended to limit the application. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this application should be included within the scope of protection of this application.

Claims

1. A vehicle control method, characterized in that, The method includes: The closure status of the vehicle's hood is obtained, and the closure status is used to indicate whether the hood is in an open or closed state; When the closure status indicates that the hood is in the open state, the ambient temperature of the three-way valve inside the vehicle is obtained. The three-way valve is a valve device installed inside the vehicle to control the flow direction and / or flow ratio of fluids inside the vehicle. Obtain the gear position data of the vehicle; Based on the ambient temperature and the gear position data, the valve duty cycle of the three-way valve is controlled, and the valve duty cycle is used to indicate the degree of opening of the three-way valve.

2. The method according to claim 1, characterized in that, The step of controlling the valve duty cycle of the three-way valve based on the ambient temperature and the gear position data includes: In response to the ambient temperature being within a preset temperature range and the gear position data not matching the preset gear position, the intake temperature of the three-way valve is obtained, where the intake temperature refers to the temperature of the fluid flowing into the three-way valve; the valve duty cycle of the three-way valve is controlled according to the intake temperature. In response to the ambient temperature being lower than the preset temperature range and / or the gear data matching the preset gear, the rotational speed data of the power supply unit in the vehicle and the volume data of the coolant in the vehicle are obtained. The valve duty cycle of the three-way valve is controlled based on the rotational speed data and the capacity data.

3. The method according to claim 2, characterized in that, The step of controlling the valve duty cycle of the three-way valve based on the rotational speed data and the capacity data includes: In response to the speed data being less than a preset speed requirement and the capacity data being greater than or equal to a preset threshold, the valve duty cycle of the three-way valve is controlled to a first value, and the second valve inside the three-way valve is closed; In response to the speed data being greater than or equal to the preset speed requirement and / or the capacity data being less than the preset threshold, the valve duty cycle of the three-way valve is controlled to a second value, and the second valve is opened.

4. The method according to any one of claims 1 to 3, characterized in that, The method further includes: When the closure status indicates that the hood is in the open state, the charging status of the vehicle is obtained, and the charging status is used to indicate whether the vehicle is charging or not charging. In response to the charging status indicating that the vehicle is in the charging state, the charging speed of the vehicle is obtained, and the charging speed is used to indicate the increase of the vehicle's battery level within a preset time period; The duty cycle of the three-way valve is controlled according to the charging speed.

5. The method according to claim 4, characterized in that, The step of controlling the valve duty cycle of the three-way valve according to the charging speed includes: When the charging speed is less than the preset charging speed, the valve duty cycle of the three-way valve is controlled to the first value, and the second valve inside the three-way valve is closed.

6. The method according to any one of claims 1 to 3, characterized in that, An image acquisition unit is installed on the vehicle's body frame; The process of obtaining the closure status of the vehicle's hood includes: The image acquisition unit captures images of the environment in front of the vehicle. Identify the material information of objects present in the environmental image; The closure condition is determined based on the matching between the material information and the vehicle's preset material information.

7. A vehicle control device, characterized in that, The device includes: The acquisition module is used to acquire the closure status of the vehicle's hood, which indicates whether the hood is in an open or closed state. The acquisition module is also used to acquire the ambient temperature of the three-way valve inside the vehicle when the closure status indicates that the hood is in the open state. The three-way valve is a valve device installed inside the vehicle to control the flow direction and / or flow ratio of fluid inside the vehicle. The acquisition module is also used to acquire the gear position data of the vehicle; The control module is used to control the valve duty cycle of the three-way valve according to the ambient temperature and the gear position data. The valve duty cycle is used to indicate the degree of opening of the three-way valve.

8. A computer device, characterized in that, The computer device includes a processor and a memory, the memory storing at least one program, which is loaded and executed by the processor to implement the vehicle control method as described in any one of claims 1 to 6.

9. A computer-readable storage medium, characterized in that, The storage medium stores at least one program segment, which is loaded and executed by a processor to implement the vehicle control method as described in any one of claims 1 to 6.

10. A computer program product, characterized in that, The computer program product includes computer instructions stored in a computer-readable storage medium, a processor of a computer device reading the computer instructions from the computer-readable storage medium, and the processor executing the computer instructions to cause the computer device to perform the vehicle control method as described in any one of claims 1 to 6.

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