Pressure relief control method, system, storage medium, and vehicle

Abstract

The application provides a pressure relief control method, system, storage medium and vehicle, and belongs to the technical field of vehicles. The pressure relief control method comprises the following steps: in the process of driving the vehicle, if the vehicle is in a navigation mode, it is determined whether the navigation destination represents a fuel supplement site; if the navigation destination represents a fuel supplement site, the high-pressure fuel tank is relieved of pressure before the vehicle reaches the navigation destination; and if the navigation destination does not represent a fuel supplement site, the high-pressure fuel tank is relieved of pressure based on the remaining fuel quantity of the high-pressure fuel tank and target information corresponding to the vehicle. In the case that it is determined that the driver has the intention to add fuel to the high-pressure fuel tank, the pressure is relieved in advance before the vehicle drives to the fuel station, the waiting of the driver is avoided, and the automatic control of the pressure relief process of the high-pressure fuel tank is realized.

Description

Technical Field

[0001] This application relates to the field of vehicle technology, and more specifically, to a pressure relief control method, system, storage medium, and vehicle. Background Technology

[0002] A high-pressure fuel tank is a type of fuel tank that prevents excessive fuel evaporation by increasing the internal air pressure. During the implementation of the "National VI Emission Standard for Motor Vehicles," high-pressure fuel tanks effectively prevent excessive fuel evaporation, which can lead to excessive levels of fuel evaporation pollutants in vehicle exhaust, thus improving the cleanliness of vehicle exhaust. For vehicles equipped with high-pressure fuel tanks, the tank must be depressurized before refueling to reduce internal air pressure and prevent the fuel tank valve from popping up when opened.

[0003] In related technologies, before refueling, the pressure relief process of the high-pressure fuel tank needs to be manually controlled by a high-pressure fuel tank pressure relief control switch. However, the high-pressure fuel tank requires a certain waiting time to depressurize, which increases the time cost for the driver to refuel. Summary of the Invention

[0004] Based on this, this application provides a pressure relief control method, system, storage medium, and vehicle to solve the problem of how to automatically control the pressure relief process of a high-pressure oil tank.

[0005] A first aspect of this application provides a pressure relief control method, the method being applied to an on-board controller, comprising:

[0006] If the vehicle is in navigation mode while in motion, it is determined whether the navigation destination represents a refueling location.

[0007] If the navigation destination represents a refueling location, the high-pressure fuel tank is depressurized before the vehicle reaches the navigation destination.

[0008] If the navigation destination does not represent a refueling location, the high-pressure fuel tank will be depressurized based on the remaining fuel level in the high-pressure fuel tank and the target information corresponding to the vehicle.

[0009] Optionally, depressurizing the high-pressure fuel tank before the vehicle reaches the navigation destination includes:

[0010] When the distance between the vehicle and the navigation destination is less than a first preset distance, the high-pressure oil tank is depressurized;

[0011] Alternatively, the target distance can be determined based on the vehicle's current speed and the ventilation area of ​​the isolation valve of the high-pressure fuel tank; and the high-pressure fuel tank can be depressurized when the distance between the vehicle and the navigation destination is less than the target distance.

[0012] Optionally, the target information includes: multiple location information retrieved by the vehicle within a preset time period; the depressurization of the high-pressure fuel tank based on the remaining fuel level in the high-pressure fuel tank and the target information corresponding to the vehicle includes:

[0013] When the remaining fuel level is less than a preset threshold, determine whether the multiple location information contains target location information representing a refueling location;

[0014] If the target location information is included in the multiple location information, the high-pressure fuel tank is depressurized when the distance between the vehicle and the first target location is less than the second preset distance, wherein the first target location is a fuel replenishment location located in the direction of the vehicle's travel.

[0015] Optionally, the target information further includes: the degree of vehicle speed reduction; when the remaining fuel is less than a preset threshold, the method further includes:

[0016] If the target location information is not included in the plurality of location information, then it is determined whether the vehicle meets the target conditions, wherein the target conditions are that the distance between the vehicle and the first target location is less than a third preset distance, and the vehicle speed reduction is greater than a preset amount;

[0017] When the vehicle meets the target conditions, the high-pressure oil tank is depressurized.

[0018] Optionally, after depressurizing the high-pressure oil tank, the method further includes:

[0019] Determine whether the vehicle meets the pressurization requirements;

[0020] When the vehicle meets the pressurization conditions, the high-pressure oil tank is pressurized.

[0021] Optionally, determining whether the vehicle meets the pressurization conditions includes:

[0022] Obtain the distance between the vehicle and the second target location, wherein the second target location is the navigation destination representing a refueling location or the first target location;

[0023] When the distance between the vehicle and the second target location is greater than the fourth preset distance, it is determined that the vehicle meets the pressurization condition.

[0024] Optionally, the vehicle controller communicates with the target client, and the method further includes:

[0025] Receive navigation destination information sent by the target client;

[0026] Determining whether the navigation destination represents a refueling location includes:

[0027] Determine whether the navigation destination information contains target keywords, wherein the target keywords are used to characterize refueling locations.

[0028] A second aspect of this application provides a pressure relief control system, including:

[0029] The decision module is used to determine whether the navigation destination represents a refueling location if the vehicle is in navigation mode while driving.

[0030] The first pressure relief module is used to depressurize the high-pressure fuel tank before the vehicle arrives at the navigation destination if the navigation destination represents a fuel replenishment location.

[0031] The second pressure relief module is used to depressurize the high-pressure fuel tank based on the remaining fuel level in the high-pressure fuel tank and the target information corresponding to the vehicle if the navigation destination does not represent a fuel replenishment location.

[0032] A third aspect of this application provides a computer-readable storage medium having a computer program stored thereon, which is executed by a processor to implement the steps of the pressure relief control method described in the first aspect of this application.

[0033] A fourth aspect of this application provides a vehicle including the pressure relief control system described in the second aspect of this application.

[0034] This application provides a pressure relief control method, system, storage medium, and vehicle. The method includes: during vehicle operation, if the vehicle is in navigation mode, determining whether the navigation destination represents a refueling location; if the navigation destination represents a refueling location, depressurizing the high-pressure fuel tank before the vehicle reaches the navigation destination; if the navigation destination does not represent a refueling location, depressurizing the high-pressure fuel tank based on the remaining fuel level in the high-pressure fuel tank and the target information corresponding to the vehicle.

[0035] This application, during vehicle operation, combines the vehicle's navigation destination, the remaining fuel level in the high-pressure fuel tank, and target information to determine whether the driver intends to refuel at a gas station. If this intention is confirmed, the application automatically controls the high-pressure fuel tank to depressurize. By accurately determining the driver's refueling intention using the navigation destination, remaining fuel level, and target information, this application enables pre-depressurization of the high-pressure fuel tank before the vehicle reaches the gas station, avoiding driver waiting and achieving automatic control of the high-pressure fuel tank depressurization process. Attached Figure Description

[0036] To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the description of the embodiments of this application will be briefly introduced below. Obviously, the 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.

[0037] Figure 1 This is a flowchart illustrating the steps of a pressure relief control method provided in an embodiment of this application;

[0038] Figure 2 This is a flowchart illustrating the steps of a pressure relief control method based on target information provided in an embodiment of this application.

[0039] Figure 3 This is a flowchart illustrating the steps of a pressure relief control method with pressure increase control provided in an embodiment of this application;

[0040] Figure 4 This is a flowchart illustrating the steps of a method for determining whether a vehicle meets pressurization conditions, as provided in an embodiment of this application.

[0041] Figure 5 This is a flowchart illustrating another method for determining whether a vehicle meets the pressurization conditions, provided in an embodiment of this application.

[0042] Figure 6 This is a flowchart illustrating the steps of a method for determining a navigation destination provided in an embodiment of this application;

[0043] Figure 7 This is a flowchart of a pressure relief control method provided in an embodiment of this application;

[0044] Figure 8 This is a schematic diagram of a pressure relief control system provided in an embodiment of this application. Detailed Implementation

[0045] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0046] A high-pressure fuel tank is a type of fuel tank that prevents excessive fuel evaporation by increasing the internal air pressure. During the implementation of the "National VI Emission Standard for Motor Vehicles," high-pressure fuel tanks can effectively prevent excessive fuel evaporation, which could lead to excessive levels of fuel evaporation pollutants in vehicle exhaust, thereby improving the cleanliness of vehicle exhaust.

[0047] The high-pressure oil tank includes a metal shell, internal partitions, a safety valve, a pressure sensor, a pressurizing device, and an isolation valve. The isolation valve controls the pressurization and depressurization process of the high-pressure oil tank. When the isolation valve is open, the inside of the high-pressure oil tank is connected to the outside, allowing gas inside the tank to escape and thus reducing the internal pressure. When the isolation valve is closed, the inside of the high-pressure oil tank is isolated from the outside, and the pressurizing device fills the high-pressure oil tank with gas, thereby increasing the internal pressure.

[0048] Vehicles equipped with high-pressure fuel tanks require the isolation valve to be opened before refueling to depressurize the tank and reduce internal pressure, preventing the valve from popping up upon opening. Currently, related technologies involve manually controlling the isolation valve via a high-pressure fuel tank depressurization control switch before refueling. However, due to the limited ventilation area of ​​the isolation valve, a certain waiting time is required for the high-pressure fuel tank to depressurize, increasing the driver's refueling time. Therefore, automatically controlling the high-pressure fuel tank depressurization process to eliminate this waiting time is a pressing issue.

[0049] Based on this, this application proposes a pressure relief control method, system, storage medium, and vehicle. By combining the vehicle's navigation destination, the remaining fuel level in the high-pressure fuel tank, and target information, it determines whether the driver intends to go to a gas station to refuel in the high-pressure fuel tank. If the intention is confirmed, the system automatically controls the high-pressure fuel tank to perform a pressure relief operation, thereby achieving automatic control of the high-pressure fuel tank pressure relief process and eliminating the driver's waiting time during pressure relief. Specifically, this includes:

[0050] The first aspect of this application provides an embodiment, such as... Figure 1 A step diagram of a pressure relief control method is shown, the method being applied to an on-board controller, including:

[0051] Step S101: If the vehicle is in navigation mode during driving, determine whether the navigation destination represents a refueling location.

[0052] Navigation mode refers to a mode in which the vehicle travels along a preset route. The preset route can be a route input by the driver through the human-machine interface to the vehicle controller, or a route automatically planned by the vehicle controller based on the navigation destination specified by the driver. The preset route should at least include the navigation destination and the roads that allow the vehicle to travel from its current location to the navigation destination.

[0053] When a vehicle is in navigation mode, the navigation destination represents the final destination the driver intends to reach. Therefore, by determining whether the navigation destination represents a refueling station, it's possible to ascertain whether the driver's intended destination is a refueling station. Furthermore, based on whether the driver intends to drive to a refueling station, it can be determined whether the driver intends to refuel. A refueling station is, in common terms, a gas station or other place where fuel can be refueled.

[0054] If the navigation destination represents a refueling location, proceed to step S102; if the navigation destination does not represent a refueling location, proceed to step S103.

[0055] Step S102: If the navigation destination represents a fuel refueling location, then the high-pressure fuel tank is depressurized before the vehicle reaches the navigation destination.

[0056] When the navigation destination represents a refueling station, it can be determined that the driver's destination is a refueling station, thus indicating that the driver intends to refuel.

[0057] When the driver intends to refuel, the isolation valve is opened before the vehicle reaches the navigation destination, connecting the inside of the high-pressure fuel tank with the outside, thereby allowing the gas inside the high-pressure fuel tank to flow to the outside, thus depressurizing the high-pressure fuel tank.

[0058] Step S103: If the navigation destination does not represent a refueling location, the high-pressure fuel tank is depressurized based on the remaining fuel in the high-pressure fuel tank and the target information corresponding to the vehicle.

[0059] If the navigation destination is not a refueling station, it indicates that the driver's intended destination is not a refueling station. However, the fact that the destination is not a refueling station does not necessarily mean the driver does not intend to refuel. Therefore, it is necessary to further determine the driver's intention to refuel based on the remaining fuel level in the high-pressure fuel tank and real-time monitoring of the target information. If the driver is indicated to intend to refuel based on the remaining fuel level and target information, the isolation valve will be opened to connect the inside of the high-pressure fuel tank to the outside, thereby allowing the gas inside the high-pressure fuel tank to escape to the outside and depressurizing the high-pressure fuel tank.

[0060] This application, during vehicle operation, combines the vehicle's navigation destination, the remaining fuel level in the high-pressure fuel tank, and target information to determine whether the driver intends to refuel at a gas station. If this intention is confirmed, the application automatically controls the high-pressure fuel tank to depressurize. By accurately determining the driver's intention to refuel using the vehicle's navigation destination, the remaining fuel level in the high-pressure fuel tank, and target information, this application enables pre-depressurization before the vehicle reaches the gas station, avoiding driver waiting and achieving automatic control of the high-pressure fuel tank depressurization process.

[0061] The second aspect of this application provides an embodiment that, in addition to including the embodiment proposed in the first aspect of this application, also includes:

[0062] Optionally, step S102, which involves depressurizing the high-pressure fuel tank before the vehicle reaches the navigation destination, includes:

[0063] Pressure relief method 1: When the distance between the vehicle and the navigation destination is less than a first preset distance, the high-pressure oil tank is depressurized.

[0064] The first preset distance is a pre-set threshold in the vehicle controller used to trigger the pressure relief action. This first preset distance can be input by the driver based on their driving experience, or it can be a suitable distance preset by the designer based on statistical data. When the distance between the vehicle and the navigation destination is less than the first preset distance, the isolation valve of the high-pressure fuel tank is opened, thereby releasing the pressure in the high-pressure fuel tank.

[0065] Pressure relief method two: Determine the target distance based on the vehicle's current driving speed and the ventilation area of ​​the isolation valve of the high-pressure oil tank; and when the distance between the vehicle and the navigation destination is less than the target distance, depressurize the high-pressure oil tank.

[0066] Similar to the first preset distance, the target distance can also be used as a preset threshold to trigger the pressure relief action. The target distance can be determined in real time based on the vehicle's current speed and the ventilation area of ​​the isolation valve. Specifically, the pressure relief time required for the high-pressure oil tank to switch from a high-pressure state to a normal-pressure state is first determined based on the ventilation area of ​​the isolation valve. Then, the target distance is determined by multiplying the pressure relief time by the vehicle's current speed. When the distance between the vehicle and the navigation destination is less than the target distance, the high-pressure oil tank is depressurized.

[0067] Optionally, such as Figure 2 The diagram illustrates the steps of a pressure relief control method based on target information. The target information includes: multiple location information retrieved by the vehicle within a preset time period; and step S103, which involves depressurizing the high-pressure fuel tank based on the remaining fuel level in the high-pressure fuel tank and the target information corresponding to the vehicle, including:

[0068] Step S1031: When the remaining fuel quantity is less than a preset threshold, determine whether the multiple location information contains target location information representing a fuel replenishment location.

[0069] The multiple location information retrieved by the vehicle within a preset time period refers to the multiple location information retrieved by the driver in the navigation system within that preset time period. This includes location information entered by the driver in the location search interface of the navigation system, as well as location information that the driver has previously set as the navigation destination in the navigation system. The preset time period can be a period of time starting from the current moment and ending at a moment prior to the current moment.

[0070] When the remaining fuel level in the high-pressure fuel tank is below a preset threshold, even if the navigation destination is not a refueling location, the driver may still intend to refuel during the journey because the remaining fuel in the high-pressure fuel tank is insufficient to support the vehicle's long-distance travel. Therefore, in cases where the driver may intend to refuel, further analysis should be conducted based on multiple location data retrieved by the vehicle within a preset time period to determine whether the driver actually intends to refuel.

[0071] When the target location information is included in multiple location information retrieved by the vehicle within a preset time period, proceed to step S1032.

[0072] Step S1032: If the target location information is included in the plurality of location information, then when the distance between the vehicle and the first target location is less than the second preset distance, the high-pressure fuel tank is depressurized, wherein the first target location is a fuel replenishment location located in the direction of travel of the vehicle.

[0073] If the remaining fuel in the high-pressure fuel tank is less than a preset threshold, and the vehicle retrieves multiple location information within a preset time period that includes the target location information, it indicates that the driver had noticed before the current driving process that the remaining fuel in the high-pressure fuel tank was about to fall below the preset threshold, and based on the observed situation, wanted to obtain the location of the target location information in advance through the navigation system so as to replenish the fuel in the high-pressure fuel tank in time when the remaining fuel is insufficient.

[0074] Therefore, when the remaining fuel in the high-pressure fuel tank is less than a preset threshold, if the target location information is included in the multiple location information retrieved by the vehicle within a preset time period, it indicates that the driver intends to refuel. When the driver intends to refuel, the distance between the vehicle and the first target location is acquired in real time. When the distance between the vehicle and the first target location is less than a second preset distance, the isolation valve is opened, connecting the inside of the high-pressure fuel tank to the outside, thereby allowing the gas inside the high-pressure fuel tank to leak to the outside, thus depressurizing the high-pressure fuel tank. The first target location should be located in the vehicle's direction of travel, i.e., a refueling location that the vehicle can reach along the current road without making a U-turn. In an optional embodiment, the first target location can be the nearest refueling location to the vehicle in the direction of travel.

[0075] In one optional implementation, the second preset distance can be determined based on the vehicle's current speed and the ventilation area of ​​the isolation valve. The pressure relief time required for the high-pressure oil tank to switch from a high-pressure state to a normal-pressure state can be determined based on the ventilation area of ​​the isolation valve. Furthermore, the second preset distance can be determined based on the pressure relief time and the vehicle's current speed.

[0076] Optionally, refer to Figure 2 In step S1031, if the remaining fuel is less than a preset threshold and the target location information is not found among the multiple location information retrieved by the vehicle within a preset time period, then the process proceeds to step S1033.

[0077] Step S1033: If the target location information is not included among the multiple location information, determine whether the vehicle meets the target conditions; if the vehicle meets the target conditions, depressurize the high-pressure fuel tank. The target conditions are that the distance between the vehicle and the first target location is less than a third preset distance, and the vehicle speed reduction is greater than a preset magnitude.

[0078] If the target location is not found among the multiple location information retrieved by the vehicle within a preset time period, it is necessary to further determine whether the driver intends to refuel based on the degree of vehicle speed reduction. When the distance between the vehicle and the first target location is less than a third preset distance, if the degree of vehicle speed reduction is greater than a preset amount, it indicates that the driver will drive the vehicle to the first target location. Since the first target location represents a refueling location, it is considered that the driver intends to refuel.

[0079] Optionally, such as Figure 3 A step diagram illustrating a pressure relief control method with pressure increase control is shown, the method comprising:

[0080] Step S201: If the vehicle is in navigation mode during driving, determine whether the navigation destination represents a refueling location.

[0081] The specific implementation of step S201 is the same as that of step S101, and the description of step S101 can be referred to.

[0082] Step S202: If the navigation destination represents a refueling location, then the high-pressure fuel tank is depressurized before the vehicle reaches the navigation destination.

[0083] The specific implementation of step S202 is the same as that of step S102, and the description of step S102 can be referred to.

[0084] Step S203: If the navigation destination does not represent a refueling location, then the high-pressure fuel tank is depressurized based on the remaining fuel in the high-pressure fuel tank and the target information corresponding to the vehicle.

[0085] The specific implementation of step S203 is the same as that of step S103, and the description of step S103 can be referred to.

[0086] Step S204: Determine whether the vehicle meets the pressurization conditions.

[0087] After the high-pressure fuel tank is depressurized, the internal pressure drops to atmospheric pressure. At this point, a large amount of fuel in the atmospheric pressure environment will evaporate, resulting in a significant amount of fuel vapor pollutants in the vehicle's exhaust, causing the vehicle's emissions to fail to meet the "National VI Emission Standard for Motor Vehicles". Therefore, after the high-pressure fuel tank is depressurized, it should be determined whether the vehicle meets the pressurization requirements. If the vehicle meets the pressurization requirements, proceed to step S205 to promptly pressurize the high-pressure fuel tank.

[0088] Step S205: When the vehicle meets the pressurization conditions, pressurize the high-pressure oil tank.

[0089] When the vehicle meets the pressurization requirements, the isolation valve of the high-pressure oil tank is closed, and air is injected into the high-pressure oil tank through the pressurization device, thereby pressurizing the high-pressure oil tank.

[0090] Optionally, such as Figure 4 The diagram illustrates the steps of a method for determining whether a vehicle meets pressurization conditions. Step S204, determining whether the vehicle meets pressurization conditions, further includes:

[0091] Step S2041: Obtain the distance between the vehicle and the second target location, wherein the second target location is the navigation destination representing a refueling location or the first target location.

[0092] When the navigation destination represents a refueling location, it indicates that the navigation destination is the intended refueling location, and therefore the second target location is the navigation destination representing a refueling location; when the navigation destination does not represent a refueling location, it indicates that the intended refueling location is not the navigation destination. The method described in this application will further determine the depressurization of the high-pressure fuel tank based on the first target location representing a refueling location, and therefore the second target location will be determined as the first target location representing a refueling location.

[0093] After determining the second target location, the vehicle's location can be obtained in real time through the positioning system, and the distance between the vehicle and the second destination can be determined based on the vehicle's location and the location of the second destination.

[0094] Step S2042: When the distance between the vehicle and the second target location is greater than the fourth preset distance, it is determined that the vehicle meets the pressurization condition.

[0095] When the distance between the vehicle and the second target location is greater than the fourth preset distance, it indicates that the vehicle has left the second target location and will not open the fuel tank valve again for a short period of time. Therefore, it can be determined that the vehicle meets the pressurization conditions.

[0096] Optionally, such as Figure 5 The diagram illustrates another method for determining whether a vehicle meets the pressurization conditions. Step S204, determining whether the vehicle meets the pressurization conditions, further includes:

[0097] Step S2043: Determine whether the fuel tank valve of the vehicle is opened after the high-pressure fuel tank is depressurized;

[0098] The fuel tank valve is located at the filler port of the high-pressure fuel tank and is used to prevent fuel from leaking out of the high-pressure fuel tank and to prevent external impurities from entering the tank. Before refueling the high-pressure fuel tank, the fuel tank valve must be opened. Therefore, whether the fuel tank valve opens after the high-pressure fuel tank has been depressurized can be used to determine whether the driver has refueled the high-pressure fuel tank after the pressure has been released.

[0099] If the fuel tank valve opens after depressurizing the high-pressure fuel tank, it is determined that the driver refilled the fuel in the high-pressure fuel tank after depressurization, and the process proceeds to step S2044; if the fuel tank valve does not open after depressurizing the high-pressure fuel tank, it is determined that the driver did not refill the fuel in the high-pressure fuel tank after depressurization, and the process proceeds to step S2045.

[0100] Step S2044: When the fuel tank valve is opened after depressurizing the high-pressure fuel tank, and the fuel tank valve is closed, it is determined that the vehicle meets the pressurization condition.

[0101] With the fuel tank valve opened after depressurizing the high-pressure fuel tank, it is confirmed that the driver refilled the high-pressure fuel tank after the depressurization. At this point, the fuel level in the high-pressure fuel tank is relatively high, therefore it can be inferred that the driver will not need to refill the high-pressure fuel tank for some time.

[0102] Since the driver no longer needs to add fuel to the high-pressure fuel tank, it means that the fuel tank valve will not be opened again for a short period of time after it was opened this time. Therefore, when the fuel tank valve is closed, it can be determined that the vehicle meets the pressurization conditions. That is, after the fuel tank valve is closed, the high-pressure fuel tank can be pressurized.

[0103] Step S2045: If the fuel tank valve does not open after depressurizing the high-pressure fuel tank, and the distance between the vehicle and the second target location is greater than the fourth preset distance, it is determined that the vehicle meets the pressurization condition.

[0104] If the fuel tank valve did not open after the high-pressure fuel tank was depressurized, it indicates that the driver did not refuel the high-pressure fuel tank after the depressurization. In this case, the driver may not have refueled the high-pressure fuel tank after the depressurization was complete because the brand or type of fuel offered at the refueling station did not meet their expectations. Therefore, it can be inferred that the driver's intention to refuel was not satisfied after the high-pressure fuel tank was depressurized, and the driver may still have some intention to refuel.

[0105] Since the driver may still intend to add fuel to the high-pressure fuel tank after the initial depressurization, the fuel tank valve may still be open for a short period after the depressurization. Therefore, the pressurization of the high-pressure fuel tank should be delayed. The vehicle should only be considered pressurized when the distance between the vehicle and the second target location is greater than the fourth preset distance.

[0106] Optionally, target information can be monitored in real time using the following monitoring methods, including:

[0107] Monitoring Method 1: Obtain multiple location information retrieved within a preset time period from historical navigation search information.

[0108] Historical navigation retrieval information refers to all information that drivers have historically retrieved or entered into the navigation system, as well as all information generated by the navigation system based on the driver's input. Based on a preset time period, historical navigation retrieval information belonging to that preset time period is extracted. Then, the location information retrieved by the driver within this preset time period is identified as multiple location information retrieved by the vehicle in the target information within that preset time period.

[0109] Monitoring Method 2: Based on the brake pedal opening of the vehicle and / or the change in vehicle speed per unit time, obtain the vehicle speed reduction.

[0110] The rate of vehicle deceleration refers to the difference in vehicle speed between two points in time. The greater the speed difference, the greater the rate of vehicle deceleration. The rate of vehicle deceleration can be determined by the brake pedal opening, the change in vehicle speed per unit time, or both the brake pedal opening and the change in vehicle speed per unit time.

[0111] The brake pedal is a device used to control vehicle deceleration. The greater the opening of the brake pedal, the greater the decrease in vehicle speed per unit time. The change in vehicle speed per unit time, i.e., the vehicle's deceleration, is the magnitude of the deceleration; the greater the deceleration, the greater the decrease in speed. The magnitude of speed reduction can be determined by either the brake pedal opening or the change in vehicle speed per unit time, or a combination of both.

[0112] Optionally, such as Figure 6 The diagram illustrates a step-by-step method for determining a navigation destination, in which the vehicle controller establishes a communication link with the target client, including:

[0113] Step S301: Receive navigation destination information sent by the target client.

[0114] The target client is other electronic devices that can establish a communication link with the vehicle controller, such as mobile phones, tablets, and personal computers. Due to the influence of the navigation map version stored in the vehicle navigation system or the driver's navigation habits, drivers often use other navigation systems outside the vehicle navigation system for navigation.

[0115] At this time, since the driver is using the navigation system on the target client for navigation, the vehicle controller cannot obtain the navigation destination through the vehicle navigation system. It needs to obtain the navigation destination information sent by the target client to obtain the navigation destination.

[0116] Step S302: Determine whether the navigation destination information contains target keywords, wherein the target keywords are used to characterize refueling locations.

[0117] The navigation destination information must include at least the name of the navigation destination. By determining whether the name of the navigation destination contains target keywords that represent a refueling location, it can be determined whether the navigation destination represents a refueling location.

[0118] For example, if the navigation destination information contains the name "a restaurant in a certain street," it is determined that the navigation destination is not a fuel replenishment location because the name does not contain keywords that indicate a fuel replenishment location. However, if the navigation destination name is "a fuel replenishment location in a certain street," it is determined that the navigation destination is a fuel replenishment location because the name contains keywords that indicate a fuel replenishment location.

[0119] A third aspect of this application provides an embodiment, such as... Figure 7 A flowchart illustrating a pressure relief control method is shown, the method comprising:

[0120] During vehicle operation, when the vehicle is in navigation mode, it is determined whether the vehicle's navigation destination represents a refueling station. Specifically, when the driver navigates using a navigation system located on the target client, the target client's navigation destination information should also be obtained before determining whether the vehicle's navigation destination represents a refueling station. The determination of whether the vehicle's navigation destination represents a refueling station is made by checking whether the navigation destination information contains target keywords used to represent a refueling station.

[0121] If the vehicle's navigation destination represents a refueling location, pressure relief will begin before the vehicle reaches the destination. The methods for achieving pressure relief before the vehicle reaches the destination are: Method 1: Depressurizing the high-pressure fuel tank when the distance between the vehicle and the navigation destination is less than a first preset distance; Method 2: Determining the target distance based on the vehicle's current speed and the venting area of ​​the high-pressure fuel tank's isolation valve; and depressurizing the high-pressure fuel tank when the distance between the vehicle and the navigation destination is less than the target distance.

[0122] If the vehicle's navigation destination does not represent a refueling location, it is determined whether the remaining fuel in the high-pressure fuel tank is less than a preset threshold. If the remaining fuel is less than the preset threshold, it is determined whether the location information retrieved by the vehicle within a preset time period contains target location information representing a refueling location.

[0123] If the location information retrieved by the vehicle within a preset time period includes target location information, then the high-pressure fuel tank will begin to depressurize when the distance between the vehicle and the first target location is less than a second preset distance. In an optional implementation, if the location information retrieved by the vehicle within a preset time period includes target location information, then the high-pressure fuel tank will begin to depressurize when the distance between the vehicle and the nearest first target location is less than a second preset distance. The first target location is a refueling station located in the vehicle's direction of travel.

[0124] If the location information retrieved by the vehicle within a preset time period does not include the target location information, then in an optional implementation, when the distance between the vehicle and the first target location is less than the second preset distance, it can also be determined whether the vehicle speed reduction is greater than a preset range when the distance between the vehicle and the first target location closest to the vehicle is less than the second preset distance.

[0125] If the vehicle speed decreases by more than the preset amount, the high-pressure oil tank will be depressurized.

[0126] After depressurizing the high-pressure oil tank, determine whether the vehicle meets the pressurization conditions. If the vehicle meets the pressurization conditions, begin pressurizing the high-pressure oil tank.

[0127] The steps for determining whether a vehicle meets the pressurization requirements include:

[0128] Obtain the distance between the vehicle and the second target location, where the second target location is a navigation destination representing a refueling location or a first target location; when the distance between the vehicle and the second target location is greater than a fourth preset distance, determine that the vehicle meets the pressurization conditions.

[0129] The fourth aspect of this application provides an embodiment, such as Figure 8A schematic diagram of a pressure relief control system is shown, the system comprising:

[0130] The decision module is used to determine whether the navigation destination represents a refueling location if the vehicle is in navigation mode while driving.

[0131] The first pressure relief module is used to depressurize the high-pressure fuel tank before the vehicle arrives at the navigation destination if the navigation destination represents a fuel replenishment location.

[0132] The second pressure relief module is used to depressurize the high-pressure fuel tank based on the remaining fuel level in the high-pressure fuel tank and the target information corresponding to the vehicle if the navigation destination does not represent a fuel replenishment location.

[0133] Optionally, the first pressure relief module is further configured to relieve pressure on the high-pressure oil tank when the distance between the vehicle and the navigation destination is less than a first preset distance;

[0134] Alternatively, the target distance can be determined based on the vehicle's current speed and the ventilation area of ​​the isolation valve of the high-pressure fuel tank; and the high-pressure fuel tank can be depressurized when the distance between the vehicle and the navigation destination is less than the target distance.

[0135] Optionally, the second pressure relief module is further configured to determine whether the plurality of location information contains target location information representing a refueling location when the remaining fuel level is less than a preset threshold; if the plurality of location information contains the target location information, then when the distance between the vehicle and the first target location is less than a second preset distance, the high-pressure fuel tank is depressurized, wherein the first target location is a refueling location located in the direction of the vehicle's travel.

[0136] Optionally, the second pressure relief module is further configured to determine whether the vehicle meets the target conditions if the target location information is not included among the multiple location information, wherein the target conditions are that the distance between the vehicle and the first target location is less than a third preset distance and the vehicle speed reduction is greater than a preset amount; and if the vehicle meets the target conditions, the high-pressure oil tank is depressurized.

[0137] Optionally, the system further includes a pressurization module for determining whether the vehicle meets the pressurization conditions; and pressurizing the high-pressure oil tank when the vehicle meets the pressurization conditions.

[0138] Optionally, the pressurization module is further configured to obtain the distance between the vehicle and the second target location, wherein the second target location is the navigation destination representing a refueling location or the first target location; when the distance between the vehicle and the second target location is greater than a fourth preset distance, it is determined that the vehicle meets the pressurization condition.

[0139] Optionally, the decision module is further configured to receive navigation destination information sent by the target client; and determine whether the navigation destination information contains target keywords, wherein the target keywords are used to characterize a refueling location.

[0140] This application also provides a computer-readable storage medium storing a computer program / instructions thereon, which, when executed by a processor, implements a pressure relief control method as disclosed in this application.

[0141] This application also provides a vehicle, including a pressure relief control system provided in this application.

[0142] This application, during vehicle operation, combines the vehicle's navigation destination, the remaining fuel level in the high-pressure fuel tank, and target information to determine whether the driver intends to refuel at a gas station. If this intention is confirmed, the application automatically controls the high-pressure fuel tank to depressurize. By accurately determining the driver's refueling intention using the navigation destination, remaining fuel level, and target information, this application enables pre-depressurization of the high-pressure fuel tank before the vehicle reaches the gas station, avoiding driver waiting and achieving automatic control of the high-pressure fuel tank depressurization process.

[0143] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0144] This application describes embodiments with reference to flowchart illustrations and / or block diagrams of methods, systems, electronic devices, and computer program products according to embodiments of this application. It should be understood that each block of the flowchart illustrations and / or block diagrams, and combinations of blocks in the flowchart illustrations and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, special-purpose computer, embedded processor, or other programmable data processing terminal device to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing terminal device, generate instructions for implementing the flowchart illustrations. Figure 1 One or more processes and / or boxes Figure 1A device that provides the functions specified in one or more boxes.

[0145] These computer program instructions may also be stored in a computer-readable storage medium that can direct a computer or other programmable data processing terminal device to operate in a particular manner, such that the instructions stored in the computer-readable storage medium produce an article of manufacture including instruction means, which are implemented in a process Figure 1 One or more processes and / or boxes Figure 1 The function specified in one or more boxes.

[0146] These computer program instructions can also be loaded onto a computer or other programmable data processing terminal equipment, causing a series of operational steps to be performed on the computer or other programmable terminal equipment to produce a computer-implemented process, thereby providing instructions that execute on the computer or other programmable terminal equipment for implementing the process. Figure 1 One or more processes and / or boxes Figure 1 The steps of the function specified in one or more boxes.

[0147] Although preferred embodiments of the present application have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments as well as all changes and modifications falling within the scope of the embodiments of the present application.

[0148] Finally, it should be noted that in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or terminal device that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or terminal device. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or terminal device that includes the element.

[0149] The above provides a detailed description of the pressure relief control method, system, storage medium, and vehicle provided in this application. Specific examples have been used to illustrate the principles and implementation methods of this application. The descriptions of the above embodiments are only for the purpose of helping to understand the method and core ideas of this application. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the ideas of this application. Therefore, the content of this specification should not be construed as a limitation of this application.

Claims

1. A pressure relief control method, characterized in that, The method is applied to an on-board controller and includes: If the vehicle is in navigation mode while in motion, determine whether the navigation destination represents a refueling location. If the navigation destination represents a refueling location, the high-pressure fuel tank is depressurized before the vehicle reaches the navigation destination. If the navigation destination does not represent a refueling location, the high-pressure fuel tank will be depressurized based on the remaining fuel level in the high-pressure fuel tank and the target information corresponding to the vehicle. The target information includes: multiple location information retrieved by the vehicle within a preset time period; and the depressurization of the high-pressure fuel tank based on the remaining fuel level in the high-pressure fuel tank and the target information corresponding to the vehicle includes: When the remaining fuel level is less than a preset threshold, it is determined whether the multiple location information contains target location information representing a refueling location. The location information is the location information that the driver has entered in the location search interface of the navigation system or the location information that the driver has set as the navigation destination in the navigation system within a preset time period. The preset time period is a period of time starting from the current time and ending at a time before the current time. If the target location information is included in the multiple location information, the high-pressure fuel tank is depressurized when the distance between the vehicle and the first target location is less than the second preset distance, wherein the first target location is a fuel replenishment location located in the direction of the vehicle's travel.

2. The pressure relief control method according to claim 1, characterized in that, The step of depressurizing the high-pressure fuel tank before the vehicle reaches the navigation destination includes: When the distance between the vehicle and the navigation destination is less than a first preset distance, the high-pressure oil tank is depressurized; Alternatively, the target distance can be determined based on the vehicle's current speed and the ventilation area of ​​the isolation valve of the high-pressure fuel tank; and the high-pressure fuel tank can be depressurized when the distance between the vehicle and the navigation destination is less than the target distance.

3. The pressure relief control method according to claim 1, characterized in that, The target information also includes: the degree of vehicle speed reduction; when the remaining fuel is less than a preset threshold, the method further includes: If the target location information is not included in the plurality of location information, then it is determined whether the vehicle meets the target conditions, wherein the target conditions are that the distance between the vehicle and the first target location is less than a third preset distance, and the vehicle speed reduction is greater than a preset amount; When the vehicle meets the target conditions, the high-pressure oil tank is depressurized.

4. The pressure relief control method according to any one of claims 1 to 3, characterized in that, After depressurizing the high-pressure oil tank, the method further includes: Determine whether the vehicle meets the pressurization requirements; When the vehicle meets the pressurization conditions, the high-pressure oil tank is pressurized.

5. The pressure relief control method according to claim 4, characterized in that, Determining whether the vehicle meets the pressurization conditions includes: Obtain the distance between the vehicle and the second target location, wherein the second target location is the navigation destination representing a refueling location or the first target location; When the distance between the vehicle and the second target location is greater than the fourth preset distance, it is determined that the vehicle meets the pressurization condition.

6. The pressure relief control method according to claim 1, characterized in that, The vehicle controller communicates with the target client, and the method further includes: Receive navigation destination information sent by the target client; Determining whether the navigation destination represents a refueling location includes: Determine whether the navigation destination information contains target keywords, wherein the target keywords are used to characterize refueling locations.

7. A pressure relief control system, characterized in that, include: The decision module is used to determine whether the navigation destination represents a refueling location if the vehicle is in navigation mode while driving. The first pressure relief module is used to depressurize the high-pressure fuel tank before the vehicle arrives at the navigation destination if the navigation destination represents a fuel replenishment location. The second pressure relief module is used to depressurize the high-pressure fuel tank based on the remaining fuel level in the high-pressure fuel tank and the target information corresponding to the vehicle if the navigation destination does not represent a fuel replenishment location. The target information includes: multiple location information retrieved by the vehicle within a preset time period. The second pressure relief module is further configured to determine whether the multiple location information contains target location information representing a refueling location when the remaining fuel level is less than a preset threshold. The location information is location information that the driver has entered in the location search interface of the navigation system or location information that the driver has set as a navigation destination in the navigation system within the preset time period. The preset time period is a period of time starting from the current moment and ending at a moment before the current moment. If the multiple location information contains the target location information, the high-pressure fuel tank is depressurized when the distance between the vehicle and the first target location is less than a second preset distance. The first target location is a refueling location located in the direction of the vehicle's travel.

8. A computer-readable storage medium having a computer program stored thereon, characterized in that, When the program is executed by the processor, it implements the steps of the pressure relief control method as described in any one of claims 1 to 6.

9. A vehicle, characterized in that, Includes the pressure relief control system described in claim 7.

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