Pre-fueling mode control method, device, electronic device and readable storage medium

Abstract

The present application relates to the field of automotive technology, and provides a method, device, electronic device, and readable storage medium for controlling a pre-fueling mode. The method includes: determining that the vehicle's range extender is in an on state, and obtaining the coolant temperature in the engine cooling circuit; if the coolant temperature is greater than a first temperature threshold, and the duration of the coolant temperature being greater than the first temperature threshold is greater than a duration threshold, then the conditions for starting the pre-fueling mode are met, and the first temperature threshold is the maximum safe temperature of the coolant; in response to meeting the conditions for starting the pre-fueling mode, after receiving the pre-fueling mode start instruction, the pre-fueling mode is entered, and the pre-fueling mode includes stopping the engine and lowering the coolant temperature through the cooling circuit, and the start instruction is used to indicate the start of the pre-fueling mode. The method provided in the present application can cool the coolant in the engine cooling circuit through the pre-fueling mode, so that when the vehicle executes the refueling mode, the fuel filler cap can be directly opened for refueling.

Description

Technical Field

[0001] The present application relates to the field of automobile technology, and in particular to a method, device, electronic device, and readable storage medium for controlling a pre-fueling mode. Background Art

[0002] In existing technologies, extended-range electric vehicles (EREVs) have a crowded environment around their engines, resulting in poor heat dissipation. This can lead to the engine overheating during driving. If the coolant in the engine cooling circuit is too hot before refueling, accidental dripping, spilling, or splashing of gasoline onto the engine could result in dangerous accidents such as combustion or explosion.

[0003] In view of this, when the current extended-range electric vehicle starts the refueling mode, it is necessary to stop the engine first to refuel, and use the generator to drive the engine to provide energy for cooling the cooling circuit. It is necessary to first determine whether the engine temperature is within a safe temperature range where dangerous accidents such as combustion or explosion will not occur. If not, the coolant temperature is lowered through the cooling circuit. Only when the coolant temperature is within the safe temperature range can the engine be stopped to provide energy to the cooling circuit, and the operation of the high-voltage components be stopped, and then the fuel filler cap can be opened to refuel.

[0004] However, in the current refueling mode, when the refueling mode is turned on and the temperature is too high, the operation of cooling the engine through the cooling circuit will increase the user's stay time at the gas station, and the user's refueling experience will be poor. Summary of the Invention

[0005] In view of this, the embodiments of the present application provide a method, device, electronic device and readable storage medium for controlling the pre-refueling mode to solve the problem in the prior art that when the coolant temperature of the engine cooling circuit is too high, the vehicle needs to be stopped and cooled down before the refueling mode is turned on, causing the user to stay at the gas station for too long.

[0006] A first aspect of an embodiment of the present application provides a method for controlling a pre-fueling mode, comprising:

[0007] Determine whether the vehicle's range extender is on and obtain the coolant temperature in the engine cooling circuit;

[0008] If the coolant temperature is greater than a first temperature threshold, and the duration of the coolant temperature being greater than the first temperature threshold is greater than a duration threshold, then the condition for starting the pre-refueling mode is met. The first temperature threshold is the maximum safe temperature for the vehicle to execute the refueling mode.

[0009] In response to meeting the conditions for starting the pre-fueling mode, after receiving the start instruction of the pre-fueling mode, the pre-fueling mode is entered. The pre-fueling mode includes stopping the engine and reducing the coolant temperature through the cooling circuit. The start instruction is used to indicate the start of the pre-fueling mode.

[0010] A second aspect of an embodiment of the present application provides a pre-fueling mode control device, comprising:

[0011] a monitoring unit configured to determine whether the range extender of the vehicle is in an on state and obtain a coolant temperature in a cooling circuit of the engine;

[0012] a determining unit configured to satisfy a condition for starting the pre-refueling mode if the coolant temperature is greater than a first temperature threshold and the duration of the coolant temperature being greater than the first temperature threshold is greater than a duration threshold, wherein the first temperature threshold is a maximum safe temperature for the vehicle to execute the refueling mode;

[0013] The opening unit is configured to respond to the conditions for starting the pre-fueling mode and enter the pre-fueling mode after receiving the opening instruction of the pre-fueling mode. The pre-fueling mode includes stopping the engine and reducing the coolant temperature through the cooling circuit. The opening instruction is used to indicate the opening of the pre-fueling mode.

[0014] According to a third aspect of an embodiment of the present application, an electronic device is provided, comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor implements the steps of the above method when executing the computer program.

[0015] According to a fourth aspect of an embodiment of the present application, a readable storage medium is provided, which stores a computer program. When the computer program is executed by a processor, the steps of the above method are implemented.

[0016] Compared with the prior art, the embodiments of the present application have the following advantages: when the vehicle's range extender is in the on-state, the coolant temperature in the engine cooling circuit is obtained, and a determination is made as to whether the coolant temperature exceeds the maximum safe temperature for the vehicle to execute refueling mode. If so, and the coolant temperature is greater than a first temperature threshold for a duration greater than a duration threshold, the conditions for initiating the pre-refueling mode are determined to be met. In response to the conditions for initiating the pre-refueling mode being met and a pre-refueling mode activation instruction being received, the pre-refueling mode is entered. The pre-refueling mode includes stopping the engine and lowering the coolant temperature through the cooling circuit. This allows the coolant in the engine cooling circuit to be cooled by the pre-refueling mode before the vehicle begins refueling, allowing the fuel filler cap to be opened directly for refueling when the vehicle executes refueling mode. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the embodiments or descriptions of the prior art. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0018] Figure 1 This is a flow chart of a method for controlling a pre-fueling mode provided in an embodiment of the present application;

[0019] Figure 2 is a schematic diagram of a pre-fueling mode control device provided in an embodiment of the present application;

[0020] Figure 3 Schematic diagram of an electronic device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0021] In the following description, specific details such as specific system structures and techniques are provided for purposes of illustration rather than limitation to facilitate a thorough understanding of the embodiments of the present application. However, it will be apparent to those skilled in the art that the present application may be implemented in other embodiments without these specific details. In other cases, detailed descriptions of well-known systems, devices, circuits, and methods are omitted to avoid obscuring the description of the present application with unnecessary detail.

[0022] A method and device for controlling a pre-fueling mode according to an embodiment of the present application will be described in detail below with reference to the accompanying drawings.

[0023] The application scenarios of the embodiments of the present application may include in-vehicle computers, terminal devices, servers and networks.

[0024] The on-board computer can be implemented as multiple software or software modules, or as a single software or software module, and the embodiments of the present application do not limit this.

[0025] The server can be a backend server that receives requests sent by an onboard computer or terminal device with which it establishes a communication connection. The backend server can receive and analyze the requests sent by the terminal device and generate processing results. The server can be a single server, a server cluster composed of multiple servers, or a cloud computing service center, which is not limited in the embodiments of the present application.

[0026] It should be noted that the server can be either hardware or software. When the server is hardware, it can be various electronic devices that provide various services to the vehicle-mounted computer or terminal device. When the server is software, it can be multiple software or software modules that provide various services to the vehicle-mounted computer or terminal device, or it can be a single software or software module that provides various services to the vehicle-mounted computer or terminal device, and this embodiment of the application does not limit this.

[0027] The network can be a wired network connected by coaxial cable, twisted pair and optical fiber, or it can be a wireless network that can interconnect various communication devices without wiring, such as Bluetooth, Near Field Communication (NFC), infrared, etc., which is not limited in the embodiments of the present application.

[0028] It should be noted that the specific types, quantities and combinations of on-board computers, terminal devices, servers and networks can be adjusted according to the actual needs of the application scenario, and the embodiments of this application do not limit this.

[0029] Currently, some extended-range electric vehicles (hereinafter referred to as "vehicles") are equipped with high-pressure fuel tanks. Before refueling, the high-pressure tank must be depressurized. The fuel tank cap can only be unlocked after the tank pressure has dropped. However, depressurizing the high-pressure tank releases a large amount of fuel vapor. Therefore, depressurizing the high-pressure tank must be performed with the engine stopped. Therefore, vehicles equipped with high-pressure fuel tanks are equipped with a refueling mode switch that controls the vehicle's depressurization, shuts down the generator, and opens the pressure relief valve to release pressure during refueling.

[0030] A vehicle includes a range extender, comprised of an engine and generator, as well as other high-voltage components such as a battery pack, drive battery, DC / DC converter, high-voltage distribution box, and charger. These components are typically installed near the range extender, resulting in a crowded installation space and reduced heat dissipation. These high-voltage components all require cooling and dissipation, placing a heavy load on the engine cooling circuit. This makes it difficult to cool the coolant in the engine cooling circuit, preventing efficient cooling of the range extender and, consequently, the engine. This can also easily lead to boiling of the coolant in the engine cooling circuit.

[0031] The vehicle includes a vehicle communication unit (VCU) and an in-vehicle infotainment (IVI). The VCU is the core control unit of the entire vehicle, collecting signals from various components, making judgments, and controlling the actions of the underlying component controllers. The IVI is the dedicated central processing unit of the vehicle's computer. Based on the vehicle bus system and internet services, it forms an integrated in-vehicle information processing system. Users use the IVI to send processing instructions and receive feedback.

[0032] The embodiments involved in this application include a refueling mode and a pre-refueling mode, wherein the refueling mode is used to control the vehicle to lower high pressure, shut down the engine and open the pressure relief valve to release pressure, and the pre-refueling mode is used to cool the coolant when the coolant temperature in the engine cooling circuit is too high, thereby reducing the engine temperature and lowering the engine temperature to a level that can execute the refueling mode.

[0033] Figure 1 This is a flow chart of a method for controlling a pre-fueling mode provided in an embodiment of the present application. Figure 1 The pre-fueling mode control method can be executed by the vehicle computer. Figure 1 As shown, the method for controlling the pre-fueling mode includes the following steps:

[0034] S101, determining that the vehicle's range extender is in an on state, and obtaining the coolant temperature in the engine cooling circuit;

[0035] S102, if the coolant temperature is greater than a first temperature threshold, and the duration of the coolant temperature being greater than the first temperature threshold is greater than a duration threshold, then the condition for starting the pre-fueling mode is met;

[0036] S103 , in response to the condition for starting the pre-fueling mode being met, after receiving a pre-fueling mode start instruction, entering the pre-fueling mode.

[0037] In step S101 , when the range extender of the vehicle is in an on state, that is, when the engine of the range extender is in an operating power generation state, the coolant temperature in the engine cooling circuit is obtained.

[0038] In step S102, the first temperature threshold is the maximum safe temperature for the vehicle to execute the refueling mode. The conditions for starting the pre-refueling mode are determined to be met if the coolant temperature is greater than the first temperature threshold and the duration of the coolant temperature greater than the first temperature threshold is greater than the duration threshold.

[0039] If the coolant temperature is not greater than the first temperature threshold, or the duration of the coolant temperature being greater than the first temperature threshold is less than or equal to the duration threshold, or the coolant temperature is not greater than the first temperature threshold and the duration of the coolant temperature being less than the first temperature threshold is not greater than the duration threshold, it is determined that in this state, the conditions for starting the pre-refueling mode are not met.

[0040] In the embodiment of the present application, taking the first temperature threshold as 95°C and the duration threshold as 30 seconds as an example, when it is determined that the range extender of the current vehicle is in the on state and the coolant temperature is 97°C and lasts for more than 30 seconds, it is determined that the current vehicle meets the conditions for starting the pre-refueling mode.

[0041] In step S103, the pre-fueling mode involves stopping the engine and lowering the coolant temperature through the cooling circuit. The start command is used to indicate the start of the pre-fueling mode. Only after the pre-fueling mode start conditions are determined to be met can the pre-fueling mode start command be accepted, thereby updating the engine operating status and lowering the coolant temperature through the cooling circuit. If the pre-fueling mode start conditions are not met, the pre-fueling mode start command is not accepted.

[0042] Following the pre-fueling mode activation command, the system enters pre-fueling mode, which includes stopping the engine (i.e., stopping fuel injection and ignition) and reducing the coolant temperature through the cooling circuit. With fuel injection and ignition stopped, the generator can drive the engine, and the energy generated by the engine is used to power the engine cooling circuit.

[0043] In the method for controlling the pre-fueling mode provided in the present application, if the coolant temperature in the engine cooling circuit is too high, the pre-fueling mode can be turned on before the fueling mode is turned on to cool the coolant and thereby cool the engine, so that the engine temperature is reduced to a level that allows the fueling mode to be executed.

[0044] In some embodiments, after receiving the instruction to start the pre-fueling mode and entering the pre-fueling mode, the method further includes:

[0045] determining a first time required to reduce the current coolant temperature to the second temperature threshold based on the coolant temperature, the second temperature threshold, the cooling efficiency of the cooling circuit, and the coolant flow rate;

[0046] determining a second time required for the vehicle to arrive at the target gas station based on the navigation information;

[0047] If the second time period is greater than or equal to the first time period, then after waiting for the first time period, an instruction to start the refueling mode is generated.

[0048] Among them, the refueling mode includes controlling the pressure relief of the vehicle's high-pressure fuel tank and controlling the vehicle's fuel tank cap to be in an open state. The second temperature threshold is the maximum safe temperature for the vehicle to execute the refueling mode. The navigation information includes the distance between the vehicle's current location and the target gas station and the vehicle speed. The first temperature threshold is greater than the second temperature threshold.

[0049] In an exemplary embodiment of the present application, a first time required for the coolant temperature in the current engine cooling circuit to drop to the second temperature threshold is calculated based on the coolant temperature, the second temperature threshold, the cooling efficiency of the cooling circuit, and the coolant flow rate.

[0050] The IVI determines a second time duration for the vehicle to arrive at the target gas station based on the navigation information, wherein the second time duration is determined by dividing the distance between the current position of the vehicle and the target gas station in the navigation information by the vehicle speed.

[0051] Determine the size of the first time length and the second time length. If the second time length is greater than or equal to the first time length, then starting from the current moment and after waiting for the first time length, generate a refueling mode activation instruction to put the vehicle in an environment that satisfies the execution of the refueling mode.

[0052] Among them, the instruction to turn on the refueling mode is to gray out the refueling mode button. When the IVI determines that the vehicle has arrived at the target gas station based on the navigation information, the refueling mode is turned on.

[0053] In another exemplary embodiment of the present application, the pre-fueling mode is activated according to a pre-fueling mode activation instruction sent by a user. The user clicks on the vehicle's display screen via the IVI to activate the pre-fueling mode, which serves as the user-initiated pre-fueling mode activation instruction.

[0054] In the control method of the pre-fueling mode provided in the present application, the pre-fueling mode can be turned on according to a user instruction, or can be turned on according to the fueling mode being turned on and the conditions for turning on the pre-fueling mode being met. Even if the user regards the fueling mode as the pre-fueling mode, the pre-fueling mode can be turned on during vehicle driving to cool the coolant so that the vehicle meets the environment for executing the fueling mode.

[0055] In some embodiments, after determining the second time required for the vehicle to arrive at the target gas station based on the navigation information, the method further includes:

[0056] If the second duration is less than the first duration, the vehicle speed is adjusted, and the second duration is updated according to the adjusted vehicle speed to obtain a third duration, so that the third duration is greater than the first duration.

[0057] In an exemplary embodiment of the present application, when the second duration is less than the first duration, the user is prompted with the corresponding values of the first and second durations via an announcement, wherein the announcement may be voice announcement, text announcement, or both. The announcement also prompts the user to adjust the vehicle speed and recommends a target speed to ensure that the coolant is cooled by the time the user reaches the gas station.

[0058] Continuing with the previous example, if the user adjusts the speed according to the prompted target speed, the second duration is updated based on the adjusted speed, resulting in a third duration that is greater than the first. If the user does not adjust the speed according to the prompt, pre-fueling mode is not initiated, and the engine cooling circuit is cooled using pre-fueling mode after the user arrives at the gas station. Alternatively, pre-fueling mode is initiated directly, and the user is informed of the required cooldown time. While pre-fueling mode is in effect, the vehicle's driving state remains unaffected, and the vehicle's driving state can be adjusted to suit the user's needs.

[0059] The control method of the pre-refueling mode provided in the present application can prompt the user according to the first duration and the second duration, thereby improving the user's refueling experience and pre-refueling experience.

[0060] In some embodiments, the cooling circuit includes a radiator, a cooling fan, and a water pump. Determining a first time required to reduce the current coolant temperature to the second temperature threshold based on the coolant temperature, the second temperature threshold, the cooling efficiency of the cooling circuit, and the cooling flow rate includes:

[0061] obtaining a cooling efficiency of the cooling circuit and calculating a difference between the coolant temperature and a second temperature threshold to obtain a target difference;

[0062] determining a first duration according to the target difference, the cooling efficiency, and the cooling flow rate;

[0063] The mathematical expression of the first duration is:

[0064] t=T / WS;

[0065] Wherein, t is the first duration, T is the target difference, W is the cooling efficiency, and S is the cooling flow rate.

[0066] In an exemplary embodiment of the present application, taking the second temperature threshold of 90°C as an example, after the pre-fueling mode is turned on, the VCU determines the temperature difference between the current engine cooling circuit coolant temperature and 90°C as the target difference T, determines the heat dissipation efficiency W according to the vehicle's external ambient temperature, the radiator temperature and the radiator fan speed, and determines the cooling circuit flow S according to the water pump speed. Based on the above values, the time required for the coolant temperature of the engine cooling circuit to drop to the second time threshold is jointly determined as the first time duration t.

[0067] Here, the heat dissipation efficiency W represents the number of liters of coolant required to reduce the coolant temperature by 1°C per minute, and the cooling circuit flow rate S represents the number of liters of coolant flowing through the water pump per minute. The first duration changes dynamically based on the values corresponding to the above factors.

[0068] The control method of the pre-refueling mode provided in the present application can determine the first time required for the coolant to drop from the current coolant temperature to the second temperature threshold based on the coolant temperature, the second temperature threshold, and the cooling efficiency of the cooling circuit. By comprehensively considering multiple factors, the obtained first time is more accurate and changes dynamically, and can provide real-time feedback to enhance the user experience.

[0069] In some embodiments, further comprising:

[0070] displaying the first duration on a display screen of the vehicle;

[0071] If the pre-fueling mode is activated, the first duration is updated in a countdown manner, and the updated first duration is displayed on the vehicle's display screen;

[0072] If it is determined that the pre-fueling mode has ended, the display of the first duration is cancelled on the display screen.

[0073] The first duration is displayed on the vehicle's display screen via the IVI. If the conditions for enabling pre-fueling mode are met but pre-fueling mode has not yet been enabled, the first duration on the display screen is updated based solely on the external ambient temperature, coolant temperature, and cooling circuit efficiency. If pre-fueling mode is already enabled, the first duration is updated in a countdown manner and the updated first duration is displayed on the vehicle's display screen. If pre-fueling mode has ended, i.e., the coolant temperature has fallen within the second temperature threshold, the first duration is no longer displayed on the display screen.

[0074] The control method of the pre-refueling mode provided in this application can display the first duration on the vehicle's display screen and dynamically update it, so as to prompt the user in real time the time required for the coolant temperature in the engine cooling circuit to decrease, thereby improving the user's usage experience.

[0075] In some embodiments, entering a pre-fueling mode includes stopping the engine and reducing the coolant temperature through the cooling circuit, including:

[0076] If the water pump is an electronic water pump, control the radiator and water pump to maintain the current state;

[0077] If the water pump is a mechanical water pump, the generator is controlled to drive the engine to run, so that the engine drives the mechanical water pump to cool the cooling circuit, and the radiator is controlled to maintain the current state.

[0078] The engine cooling circuit uses an electronic water pump or a mechanical water pump. If the vehicle uses an electronic water pump, when the pre-fueling mode is turned on, the radiator and water pump are controlled to remain in the current state.

[0079] For vehicles with a mechanical water pump, the engine's fuel injection and ignition are stopped, and the generator is controlled to drive the engine, which in turn drives the water pump to lower the temperature of the cooling circuit and maintain the radiator at its current state. This process is also known as reverse drag.

[0080] The control method of the pre-fueling mode provided in the present application can avoid the risk of excessively high cooling circuit temperature, which may cause the coolant to boil and break through the stopper of the cooling kettle.

[0081] In some embodiments, further comprising:

[0082] If it is determined that the conditions for starting the pre-fueling mode are met, a pre-fueling mode button is highlighted on the vehicle's interactive interface. The pre-fueling mode button is used to receive a command to start or stop the pre-fueling mode;

[0083] If the coolant temperature is monitored to be lower than the second temperature threshold, and the duration for which the coolant temperature is lower than the second temperature threshold is greater than the duration threshold, the pre-refueling mode button is grayed out on the vehicle's interactive interface.

[0084] The pre-fueling mode button displayed on the IVI has two states: one is to enable the pre-fueling mode, and the other is to disable the pre-fueling mode. The pre-fueling mode state can be set to highlight the pre-fueling mode button, while the pre-fueling mode state can be set to gray out the pre-fueling mode button.

[0085] If the pre-fueling mode conditions are met, that is, the vehicle's range extender is on, the coolant temperature is greater than the first temperature threshold, and the duration of the coolant temperature greater than the first temperature threshold is greater than the duration threshold, the pre-fueling mode button is highlighted. Otherwise, the pre-fueling mode button is grayed out.

[0086] When the coolant temperature in the engine cooling circuit drops to within the second temperature threshold range, the VCU sends a command to the IVI to allow refueling. After receiving the command, the IVI changes the refueling mode switch to a clickable state, which can be a blue clickable state, indicating that if you click to turn on the refueling mode at this time, the vehicle will be directly powered off and the engine will be completely stopped. At the same time, the high-pressure fuel tank will be depressurized and the high-pressure fuel tank cover will be opened.

[0087] In another exemplary embodiment of the present application, if the vehicle's range extender is off, a refueling mode button is directly displayed on the vehicle's display screen, and the pre-refueling mode button is grayed out. If the vehicle's range extender is on and the detected coolant temperature is within a first temperature threshold, the refueling mode switch becomes clickable, and the pre-refueling mode button is grayed out.

[0088] Among them, since the engine temperature will return to normal after the vehicle is powered off, when it is detected that the coolant temperature is greater than the first temperature threshold, it is determined that the conditions for starting the pre-refueling mode are met. If the coolant temperature is less than the first temperature threshold and greater than the second temperature threshold, the refueling mode switch will also become clickable, and the pre-refueling mode button will be grayed out.

[0089] In the method for controlling the pre-fueling mode provided in the present application, whether the pre-fueling mode is in an enabled state can be displayed on the vehicle's display screen through the IVI, and whether the vehicle's fueling mode is in an enabled state can also be displayed, so that the user can select the corresponding mode for refueling operations.

[0090] All of the above optional technical solutions can be combined in any way to form optional embodiments of the present application, and will not be described in detail here.

[0091] The following are device embodiments of the present application, which can be used to implement the method embodiments of the present application. For details not disclosed in the device embodiments of the present application, please refer to the method embodiments of the present application.

[0092] Figure 2 This is a schematic diagram of a pre-fueling mode control device provided in an embodiment of the present application. Figure 2 As shown, the pre-fueling mode control device includes a monitoring unit 201, a determination unit 202, and an activation unit 203:

[0093] The monitoring unit 201 is configured to determine whether the range extender of the vehicle is in an on state and obtain the coolant temperature in the engine cooling circuit;

[0094] The determining unit 202 is configured to satisfy a condition for starting the pre-refueling mode if the coolant temperature is greater than a first temperature threshold and the duration of the coolant temperature being greater than the first temperature threshold is greater than a duration threshold, wherein the first temperature threshold is a maximum safe temperature for the vehicle to execute the refueling mode;

[0095] The start unit 203 is configured to respond to the conditions for starting the pre-fueling mode and enter the pre-fueling mode after receiving the start instruction of the pre-fueling mode. The pre-fueling mode includes stopping the engine and reducing the coolant temperature through the cooling circuit. The start instruction is used to indicate the start of the pre-fueling mode.

[0096] In some embodiments, the activation unit 203 is configured to, after receiving the activation instruction of the pre-fueling mode and entering the pre-fueling mode, further:

[0097] determining a first time required to reduce the current coolant temperature to the second temperature threshold based on the coolant temperature, the second temperature threshold, the cooling efficiency of the cooling circuit, and the coolant flow rate, where the second temperature threshold is a maximum safe temperature for the vehicle to execute the refueling mode;

[0098] The refueling mode includes controlling the pressure relief of the vehicle's high-pressure fuel tank and controlling the vehicle's fuel tank cap to be in an open state;

[0099] determining a second time required for the vehicle to reach the target gas station based on navigation information, the navigation information including a distance between the vehicle's current location and the target gas station and a vehicle speed;

[0100] If the second time period is greater than or equal to the first time period, then after waiting for the first time period, an instruction to start the refueling mode is generated.

[0101] In some embodiments, after determining the second time required for the vehicle to arrive at the target gas station based on the navigation information, the activation unit 203 is further configured to:

[0102] If the second duration is less than the first duration, the vehicle speed is adjusted, and the second duration is updated according to the adjusted vehicle speed to obtain a third duration, so that the third duration is greater than or equal to the first duration.

[0103] In some embodiments, the activation unit 203 is configured to determine a first time required to reduce the current coolant temperature to the second temperature threshold based on the coolant temperature, the second temperature threshold, the cooling efficiency and the cooling flow of the cooling circuit, wherein the cooling circuit includes a radiator, a cooling fan, and a water pump, for:

[0104] obtaining a cooling efficiency of the cooling circuit and calculating a difference between the coolant temperature and a second temperature threshold to obtain a target difference;

[0105] determining a first duration according to the target difference, the cooling efficiency, and the cooling flow rate;

[0106] The mathematical expression of the first duration is:

[0107] t=T / WS;

[0108] Wherein, t is the first duration, T is the target difference, W is the cooling efficiency, and S is the cooling flow rate.

[0109] In some embodiments, the opening unit 203 is configured to further:

[0110] displaying the first duration on a display screen of the vehicle;

[0111] If the pre-fueling mode is activated, the first duration is updated in a countdown manner, and the updated first duration is displayed on the vehicle's display screen;

[0112] If it is determined that the pre-fueling mode has ended, the display of the first duration is cancelled on the display screen.

[0113] In some embodiments, the opening unit 203 is configured to enter a pre-fueling mode, which includes stopping the engine and reducing the coolant temperature through the cooling circuit, for:

[0114] If the water pump is an electronic water pump, control the radiator and water pump to maintain the current state;

[0115] If the water pump is a mechanical water pump, the generator is controlled to drive the engine to run, so that the engine drives the mechanical water pump to cool the cooling circuit, and the radiator is controlled to maintain the current state.

[0116] In some embodiments, the pre-fueling mode control device further comprises:

[0117] The display unit 204 is configured to highlight a pre-fueling mode button on the vehicle's interactive interface if it is determined that the conditions for starting the pre-fueling mode are met, the pre-fueling mode button being used to receive a pre-fueling mode on or off instruction;

[0118] The display unit 204 is further configured to gray out the pre-fueling mode button on the vehicle's interactive interface if it is detected that the coolant temperature is lower than a second temperature threshold and the duration of the coolant temperature being lower than the second temperature threshold is greater than a duration threshold.

[0119] It should be understood that the size of the serial numbers of the steps in the above embodiments does not mean the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of this application.

[0120] Figure 3 Schematic diagram of the electronic device 3 provided in the embodiment of the present application. Figure 3 As shown, the electronic device 3 of this embodiment includes: a processor 301, a memory 302, and a computer program 303 stored in the memory 302 and executable by the processor 301. When the processor 301 executes the computer program 303, the steps of the above-mentioned method embodiments are implemented. Alternatively, when the processor 301 executes the computer program 303, the functions of the modules / units in the above-mentioned device embodiments are implemented.

[0121] The electronic device 3 may be a desktop computer, a notebook, a PDA, a cloud server or other electronic device. The electronic device 3 may include but is not limited to a processor 301 and a memory 302. Those skilled in the art will understand that Figure 3 This is merely an example of the electronic device 3 and does not limit the electronic device 3 . The electronic device 3 may include more or fewer components than shown in the figure, or different components.

[0122] The processor 301 may be a central processing unit (CPU), or other general-purpose processors, digital signal processors (DSP), application-specific integrated circuits (ASIC), field-programmable gate arrays (FPGA), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc.

[0123] Memory 302 can be an internal storage unit of electronic device 3, such as a hard drive or memory of electronic device 3. Memory 302 can also be an external storage device of electronic device 3, such as a plug-in hard drive, a Smart Media Card (SMC), a Secure Digital (SD) card, a flash memory card, etc. Memory 302 can also include both an internal storage unit of electronic device 3 and an external storage device. Memory 302 is used to store computer programs and other programs and data required by the electronic device.

[0124] Those skilled in the art will clearly understand that for the sake of convenience and brevity of description, only the division of the above-mentioned functional units and modules is used as an example for illustration. In actual applications, the above-mentioned functions can be distributed and completed by different functional units and modules as needed, that is, the internal structure of the device can be divided into different functional units or modules to complete all or part of the functions described above. The functional units and modules in the embodiments can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit. The above-mentioned integrated units can be implemented in the form of hardware or in the form of software functional units.

[0125] If the integrated module / unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a readable storage medium. Based on this understanding, the present application can implement all or part of the processes in the above-mentioned embodiment method by instructing the relevant hardware through a computer program. The computer program can be stored in a readable storage medium. When the computer program is executed by the processor, it can implement the steps of the above-mentioned various method embodiments. The computer program can include computer program code, which can be in source code form, object code form, executable file or some intermediate form. Computer-readable media can include: any entity or device capable of carrying computer program code, recording medium, USB flash drive, mobile hard disk, magnetic disk, optical disk, computer memory, read-only memory (ROM), random access memory (RAM), electrical carrier signal, telecommunication signal and software distribution medium.

[0126] The above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present application, and should all be included in the scope of protection of the present application.

Claims

1. A method for controlling a pre-fueling mode, characterized in that: include: Determine whether the vehicle's range extender is on and obtain the coolant temperature in the engine cooling circuit; If the coolant temperature is greater than a first temperature threshold, and the duration of the coolant temperature being greater than the first temperature threshold is greater than a duration threshold, then the condition for starting the pre-refueling mode is met, and the first temperature threshold is the maximum safe temperature of the coolant; In response to meeting the conditions for starting the pre-fueling mode, after receiving the start instruction of the pre-fueling mode, the pre-fueling mode is entered, and the pre-fueling mode includes stopping the engine and reducing the coolant temperature through the cooling circuit. The start instruction is used to indicate the start of the pre-fueling mode.

2. The method according to claim 1, characterized in that After receiving the start instruction of the pre-fueling mode and entering the pre-fueling mode, the method further includes: determining, based on the coolant temperature, a second temperature threshold, a cooling efficiency of the cooling circuit, and a coolant flow rate, a first time required to reduce the current coolant temperature to the second temperature threshold, where the second temperature threshold is a maximum safe temperature for the vehicle to execute a refueling mode; The refueling mode includes controlling the pressure relief of the high-pressure fuel tank of the vehicle and controlling the fuel tank cap of the vehicle to be in an open state; determining a second time required for the vehicle to reach the target gas station based on navigation information, the navigation information including a distance between the vehicle's current location and the target gas station and a vehicle speed; If the second time period is greater than or equal to the first time period, then after waiting for the first time period, an instruction to enable the refueling mode is generated.

3. The method according to claim 2, characterized in that After determining the second time required for the vehicle to arrive at the target gas station based on the navigation information, the method further includes: If the second duration is less than the first duration, the vehicle speed is adjusted, and the second duration is updated according to the adjusted vehicle speed to obtain a third duration, so that the third duration is greater than the first duration.

4. The method according to claim 2, characterized in that The cooling circuit includes a radiator, a cooling fan, and a water pump. Determining a first time required to reduce the current coolant temperature to the second temperature threshold based on the coolant temperature, a second temperature threshold, a cooling efficiency, and a cooling flow rate of the cooling circuit includes: obtaining a cooling efficiency of the cooling circuit, and obtaining a target difference value by calculating a difference between the coolant temperature and the second temperature threshold; determining the first duration according to the target difference, the cooling efficiency, and the cooling flow rate; The mathematical expression of the first duration is: t = T / WS; Wherein, t is the first duration, T is the target difference, W is the cooling efficiency, and S is the cooling flow rate.

5. The method according to claim 2, characterized in that Also includes: displaying the first duration on a display screen of the vehicle; If the pre-fueling mode is activated, updating the first time duration in a countdown manner, and displaying the updated first time duration on a display screen of the vehicle; If it is determined that the pre-fueling mode has ended, the display of the first duration is canceled on the display screen.

6. The method according to claim 4, characterized in that Entering a pre-fueling mode, the pre-fueling mode includes stopping the engine and reducing the coolant temperature through the cooling circuit, including: If the water pump is an electronic water pump, controlling the radiator and the water pump to maintain a current state; If the water pump is a mechanical water pump, the generator is controlled to drive the engine to run, so that the engine drives the mechanical water pump to cool the cooling circuit, and the radiator is controlled to maintain the current state.

7. The method according to any one of claims 1 to 6, characterized in that Also includes: If it is determined that the condition for starting the pre-fueling mode is met, a pre-fueling mode button is highlighted on the interactive interface of the vehicle, and the pre-fueling mode button is used to receive an instruction to start or stop the pre-fueling mode; If it is monitored that the coolant temperature is lower than the second temperature threshold, and the duration for which the coolant temperature is lower than the second temperature threshold is greater than the duration threshold, the pre-refueling mode button is displayed in gray on the interactive interface of the vehicle.

8. A pre-fueling mode control device, characterized in that: include: a monitoring unit configured to determine whether the range extender of the vehicle is in an on state and obtain a coolant temperature in a cooling circuit of the engine; a determining unit configured to satisfy a condition for starting the pre-refueling mode if the coolant temperature is greater than a first temperature threshold and the duration for which the coolant temperature is greater than the first temperature threshold is greater than a duration threshold, wherein the first temperature threshold is a maximum safe temperature for the vehicle to execute the refueling mode; The opening unit is configured to enter the pre-fueling mode in response to the conditions for starting the pre-fueling mode being met and after receiving the opening instruction of the pre-fueling mode, the pre-fueling mode includes stopping the engine and reducing the coolant temperature through the cooling circuit, and the opening instruction is used to indicate the opening of the pre-fueling mode.

9. An electronic device comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein: When the processor executes the computer program, the steps of the method according to any one of claims 1 to 7 are implemented.

10. A readable storage medium storing a computer program, characterized in that: When the computer program is executed by a processor, the steps of the method according to any one of claims 1 to 7 are implemented.

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