Plug-in hybrid vehicle refueling control method, device and equipment and storage medium

Abstract

The invention discloses a plug-in hybrid vehicle refueling control method, device and equipment and a storage medium, and belongs to the technical field of vehicle control. The method comprises the steps that after a vehicle is parked, an oil-gas isolation valve is controlled to be opened in response to a vehicle door unlocking instruction; after the oil-gas isolation valve is opened, the oil filler cap is controlled to be unlocked in response to the situation that the pressure of the oil tank is smaller than or equal to a preset pressure threshold value; after the oil filler cap is unlocked, whether a user has an oil filling intention or not is determined according to the opening and closing state of the oil filler cap; and when it is determined that the user has the refueling intention, the oil-gas isolation valve is controlled to be continuously opened until the refueling ending condition is triggered, and the oil-gas isolation valve is controlled to be closed. According to the method, the control logic of the oil-gas isolation valve and the oil filler cap is associated with the vehicle door unlocking instruction and the opening and closing state of the oil filler cap, the safety, reliability and applicability of the system are improved, and meanwhile the user experience is improved.

Description

Technical Field

[0001] The present invention relates to the field of vehicle control technology, and in particular to a plug-in hybrid vehicle refueling control method, device, equipment and storage medium. Background Art

[0002] With the rapid development of new energy vehicle technology, plug-in hybrid electric vehicles (PHEVs), as an important branch of new energy vehicles, have been widely used in the market because they combine the endurance of traditional fuel vehicles with the environmental advantages of pure electric vehicles. However, in the actual use of plug-in hybrid vehicles, the design and control logic of the fuel tank system has become one of the key factors affecting user experience and safety.

[0003] At present, plug-in hybrid vehicles are generally equipped with a high-pressure fuel tank system, which achieves oil and gas isolation through an oil and gas isolation valve (FTIV valve) to ensure that the fuel vapor and the air in the fuel tank can be discharged smoothly through the carbon canister during the refueling process, thereby ensuring the smoothness and safety of refueling. However, the oil and gas isolation valve in the prior art mainly relies on the signal of the fuel tank pressure sensor to determine when to open. Although this design is effective in most cases, the fuel tank pressure sensor itself has the possibility of failure. Once the sensor fails and cannot accurately detect the internal pressure of the fuel tank, it may cause the oil and gas isolation valve to fail to open in time or open incorrectly, thereby affecting the smooth progress of the refueling process and may even cause more serious safety problems. And this design that is highly dependent on a single sensor reduces the reliability and applicability of the system. At the same time, the current oil and gas isolation valve control logic also requires the driver to trigger the refueling preparation program through a physical button or a soft switch on the central control screen after parking, and the oil and gas isolation valve will open. This process is more cumbersome than the refueling procedure of traditional fuel vehicles. For car owners who are not familiar with the operation of new energy vehicles, it is inconvenient and prone to errors.

[0004] Therefore, it is necessary to improve and optimize the control logic of the vehicle oil and gas isolation valve to improve the safety, reliability and applicability of the system while enhancing the user experience. Summary of the invention

[0005] In view of the above problems, the present invention is proposed to provide a plug-in hybrid vehicle refueling control method, device, equipment and storage medium that overcome the above problems or at least partially solve the above problems, and associate the control logic of the oil and gas isolation valve and the fuel filler cap with the door unlocking command and the open and closed state of the fuel filler cap, thereby improving the safety, security, reliability and applicability of the system, while improving the user experience.

[0006] In a first aspect, a plug-in hybrid vehicle refueling control method is provided, comprising:

[0007] When the vehicle stops, in response to a door unlocking command, the oil and gas isolation valve is controlled to open;

[0008] When the oil and gas isolation valve is opened, in response to the fuel tank pressure being less than or equal to a preset pressure threshold, the fuel filler cap is controlled to be unlocked;

[0009] When the fuel filler cap is unlocked, determining whether the user intends to refuel based on the open and closed state of the fuel filler cap;

[0010] When it is determined that the user intends to refuel, the oil and gas isolation valve is controlled to be continuously opened until the refueling end condition is triggered, and then the oil and gas isolation valve is controlled to be closed.

[0011] Optionally, the refueling end condition includes at least one of the following conditions: the fuel filler lid is in a closed state, the single opening time of the fuel filler lid is greater than a preset opening time threshold, and the vehicle speed is greater than a preset speed threshold.

[0012] Optionally, determining whether the user has an intention to refuel according to the open or closed state of the fuel filler cap includes:

[0013] When the fuel filler cap is in an open state, determining that the user has an intention to refuel;

[0014] When the fuel filler lid is in the closed state, it is determined that the user has no intention to refuel.

[0015] Optionally, the method further includes:

[0016] When it is determined that the user has no intention to refuel, the opening and closing of the oil and gas isolation valve is controlled in association with the vehicle door lock state.

[0017] Optionally, the controlling of the opening and closing of the oil and gas isolation valve is associated with the vehicle door lock state, including:

[0018] When the vehicle door lock is in an unlocked state, controlling the oil and gas isolation valve to open;

[0019] When the vehicle door lock is in a locked state, the oil and gas isolation valve is controlled to be closed.

[0020] Optionally, the method further includes:

[0021] When the fuel filler lid is in an open state, in response to the vehicle gear being in a forward gear or a reverse gear, a prompt message is generated, wherein the prompt message is used to prompt a user that the fuel filler lid is not closed.

[0022] Optionally, the method further includes:

[0023] When the oil and gas isolation valve is opened, in response to the fuel tank pressure being greater than a preset pressure threshold and the duration exceeding a preset pressure relief time threshold, the fuel filler cap is controlled to be unlocked.

[0024] In a second aspect, a plug-in hybrid vehicle refueling control device is provided, comprising:

[0025] An isolation valve control module is used to control the oil and gas isolation valve to open in response to a door unlocking command when the vehicle is parked;

[0026] A fuel filler cap control module, configured to control the fuel filler cap to unlock in response to the fuel tank pressure being less than or equal to a preset pressure threshold after the oil and gas isolation valve is opened;

[0027] a determination module, used to determine whether the user intends to refuel according to the open and closed state of the fuel filler cap after the fuel filler cap is unlocked;

[0028] The isolation valve control module is also used to control the oil and gas isolation valve to be continuously opened when it is determined that the user intends to refuel, and to control the oil and gas isolation valve to be closed after the refueling end condition is triggered.

[0029] In a third aspect, an electronic device is provided, comprising: a memory and a processor, wherein the memory and the processor are communicatively connected to each other, the memory stores computer instructions, and the processor executes the plug-in hybrid vehicle refueling control method as described in the first aspect by executing the computer instructions.

[0030] In a fourth aspect, a computer-readable storage medium is provided, wherein the computer-readable storage medium stores computer instructions, and the computer instructions are used to enable the computer to execute the plug-in hybrid vehicle refueling control method as described in the first aspect.

[0031] The technical solution provided in the embodiments of the present invention has at least the following technical effects or advantages:

[0032] The embodiment of the present invention provides a plug-in hybrid vehicle refueling control method, device, equipment and storage medium, which associates the opening of the oil and gas isolation valve with the door unlocking instruction. When the vehicle stops and the door unlocking instruction is detected, the oil and gas isolation valve is controlled to open. At the same time, after the oil and gas isolation valve is opened, it is determined whether to control the fuel filler cap to be unlocked according to the size relationship between the fuel tank pressure detected by the fuel tank pressure sensor and the preset pressure threshold. That is, when the fuel tank pressure is less than or equal to the preset pressure threshold, the fuel filler cap is controlled to be unlocked. This method not only relies on the detection value of the fuel tank pressure sensor, but also determines whether the user has the intention to refuel according to the opening and closing state of the fuel filler cap, so that the oil and gas isolation valve can be continuously opened when the user has the intention to refuel and during the refueling process, and is closed after the refueling end condition is triggered, thereby ensuring the smoothness, safety and reliability of refueling. In addition, the whole process does not require the user to trigger the refueling preparation program through physical buttons or soft switches on the central control screen, so that the owners of fuel vehicles can continue the conventional refueling habits of fuel vehicles when using new energy vehicles, reducing the time for users to relearn and adapt, and improving the adaptability and user experience of plug-in hybrid vehicles.

[0033] The above description is only an overview of the technical solution of the present invention. In order to more clearly understand the technical means of the present invention, it can be implemented according to the contents of the specification. In order to make the above and other purposes, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Various other advantages and benefits will become apparent to those of ordinary skill in the art by reading the detailed description of the preferred embodiments below. The accompanying drawings are only for the purpose of illustrating the preferred embodiments and are not to be considered as limiting the present invention. Moreover, the same reference symbols are used throughout the accompanying drawings to represent the same components. In the accompanying drawings:

[0035] Figure 1 is a flow chart of a plug-in hybrid vehicle refueling control method provided by an embodiment of the present invention;

[0036] Figure 2 is a flow chart of another plug-in hybrid vehicle refueling control method provided by an embodiment of the present invention;

[0037] Figure 3 It is a structural block diagram of a plug-in hybrid vehicle refueling control device provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0038] In order to better understand the above-mentioned technical scheme, the above-mentioned technical scheme will be described in detail below in combination with the accompanying drawings and specific implementation methods of the specification. It should be understood that the embodiments of the present disclosure and the specific features in the embodiments are detailed descriptions of the technical scheme of the present application, rather than limitations on the technical scheme of the present application. In the absence of conflict, the embodiments of the present application and the technical features in the embodiments can be combined with each other.

[0039] In order to better understand the present invention, the following is an explanation of the relevant terms involved in the technical solution of the present invention:

[0040] FTIV valve: Fuel tank oil and gas isolation valve, used to block the fuel vapor between the fuel tank and the carbon canister. It is a normally closed valve, generally controlled by the vehicle ECU, and can be continuously opened when power is continuously supplied.

[0041] High-pressure fuel tank: Compared with the traditional fuel vehicle tank, it has stronger pressure resistance, and there is a fuel-gas isolation valve (FTIV) between the fuel tank ventilation line and the carbon canister, which can be opened during refueling.

[0042] Fuel tank pressure sensor: used to detect the pressure in the fuel tank.

[0043] Fuel filler cap: an opening and closing part located on the vehicle body, not a knob on the fuel pipe opening. The fuel filler cap is different from the fuel pipe opening cap. The fuel pipe opening cap is a cover that seals the fuel pipe with the fuel pipe head, and is generally a knob-type mechanical structure, while the fuel filler cap includes unlocked and unlocked states, as well as open and closed states. The unlocked and unlocked states are controlled by the controller, and the open and closed states are manually changed by the refueling personnel.

[0044] Fuel filler cap position switch: used to detect whether the fuel filler cap is currently open or closed.

[0045] An embodiment of the present invention provides a plug-in hybrid vehicle refueling control method, and the execution subject of the method may be a vehicle ECU (Electronic Control Unit) controller. Figure 1 is a flow chart of a plug-in hybrid vehicle refueling control method provided by an embodiment of the present invention, such as Figure 1 As shown, the method includes:

[0046] Step S110: After the vehicle stops, in response to a door unlocking instruction, the oil and gas isolation valve is controlled to open.

[0047] In this embodiment, the oil and gas isolation valve is in a normally closed state. Regardless of whether the vehicle's ignition switch is in the OFF position or the ON position, when the vehicle stops, the opening and closing of the oil and gas isolation valve is associated with the door unlocking command. After receiving the door unlocking command, the oil and gas isolation valve opens and the high-pressure fuel tank begins to release pressure. Since there is no oil and gas isolation valve in the fuel tank of a traditional fuel vehicle, after the driver stops the vehicle, the refueling preparation program is mainly triggered in two ways to unlock the fuel filler cap. One way is to trigger the refueling preparation program through a physical button or a soft switch on the central control screen to control the unlocking of the fuel filler cap, and the other way is to control the unlocking of the fuel filler cap by controlling the door unlocking. In this embodiment, by continuing the second triggering method in traditional fuel vehicles, the opening and closing of the oil and gas isolation valve is associated with the door unlocking command, that is, after detecting the door unlocking command, it is considered that the user may want to refuel, and at this time, the oil and gas isolation valve is controlled to open to prepare for refueling the vehicle.

[0048] It should be noted that the ECU can also obtain vehicle speed signals, vehicle power on and off signals, gear signals, brake pedal signals, etc. to comprehensively determine whether the vehicle is in a parked state. This is a routine judgment in this field and this embodiment does not limit this.

[0049] Step S120: After the oil and gas isolation valve is opened, in response to the fuel tank pressure being less than or equal to a preset pressure threshold, the fuel filler cap is controlled to be unlocked.

[0050] In this embodiment, the fuel tank pressure can be detected by a fuel tank pressure detection sensor. If the detected fuel tank pressure reaches a preset pressure threshold (eg, 2 Kpa), the ECU will control the fuel filler cap to be in an unlocked state.

[0051] Optionally, the method further includes:

[0052] When the oil and gas isolation valve is opened, in response to the fuel tank pressure being greater than a preset pressure threshold and lasting longer than a preset pressure relief time threshold, the fuel filler cap is controlled to be unlocked.

[0053] In this embodiment, the preset pressure relief time threshold can be 10s. Since the pressure relief process is usually completed within 7 to 8s after the oil and gas isolation valve is opened, if the oil tank pressure is still greater than the preset pressure threshold within the preset pressure relief time threshold after the oil and gas isolation valve is opened, it means that the oil tank pressure detection sensor may be faulty. In this case, the fuel filler cap is still controlled to be unlocked to ensure normal refueling when the fuel tank pressure detection sensor fails. In a specific implementation method, a prompt message can also be generated to remind the user that the fuel tank pressure detection sensor is faulty.

[0054] Step S130: After the fuel filler cap is unlocked, determine whether the user intends to refuel based on the open and closed state of the fuel filler cap.

[0055] Since the opening and closing of the fuel filler cap requires manual control, when the user needs to refuel, the fuel filler cap needs to be opened manually. Therefore, under the premise that the vehicle is parked and the vehicle receives an unlocking command, by obtaining the opening and closing state of the fuel filler cap, it can be further accurately determined whether the user intends to refuel. In this embodiment, the opening and closing state of the fuel filler cap can be detected by the fuel filler cap position switch.

[0056] It should be noted that, in this embodiment, the locking state of the fuel filler cap is synchronized with the locking state of the vehicle door lock to ensure that the fuel filler cap can be opened when the user intends to refuel. When the fuel filler cap is in the open state, if the vehicle receives a lock command (for example, the vehicle is refueling and the user leaves the vehicle and locks the vehicle), the vehicle battery system needs to continuously supply power to the oil and gas isolation valve to ensure that the oil and gas isolation valve is in the open state, thereby ensuring the smoothness, safety and reliability of refueling.

[0057] Optionally, in step S130, determining whether the user has the intention to refuel according to the open or closed state of the fuel filler cap includes:

[0058] When the fuel filler cap is in an open state, determining that the user intends to refuel;

[0059] When the fuel filler lid is in the closed state, it is determined that the user has no intention to refuel.

[0060] Optionally, the method further includes:

[0061] When it is determined that the user has no intention to refuel, the opening and closing of the oil and gas isolation valve is controlled in association with the vehicle door lock state.

[0062] In this embodiment, the vehicle door lock state is divided into an unlocked state and a locked state. When the vehicle door lock is in the unlocked state, the oil and gas isolation valve is controlled to be opened; when the vehicle door lock is in the locked state, the oil and gas isolation valve is controlled to be closed.

[0063] In a specific implementation, the vehicle door lock state can be determined by a relevant command. When a door unlock command is received, it can be determined that the door lock is in an unlocked state; when a door lock command is received, it can be determined that the door lock is in a locked state. In another specific implementation, the vehicle door lock state can be determined by the door lock state detected by the door lock sensor.

[0064] Optionally, the method further includes:

[0065] When the fuel filler cap is in an open state, in response to the vehicle gear being in a forward gear or a reverse gear, a prompt message is generated, and the prompt message is used to remind the user that the fuel filler cap is not closed.

[0066] If the driver forgets to close the fuel tank cap after refueling, the vapor in the tank may be directly discharged into the atmosphere during the vehicle's driving, which will also cause environmental pollution and safety hazards. When the vehicle is in the forward gear or reverse gear, it means that the vehicle is about to drive, and the user is reminded that the fuel tank cap is not closed, which can avoid the above safety hazards.

[0067] Step S140: When it is determined that the user intends to refuel, the oil and gas isolation valve is controlled to be continuously opened until the refueling end condition is triggered, and then the oil and gas isolation valve is controlled to be closed.

[0068] Optionally, the refueling end condition includes at least one of the following conditions: the fuel filler lid is in a closed state, the single opening time of the fuel filler lid is greater than a preset opening time threshold, and the vehicle speed is greater than a preset speed threshold.

[0069] Among them, the preset opening time threshold can be set to, for example, 20 minutes to ensure sufficient time for refueling; the preset vehicle speed threshold can be set to, for example, 20 km / h. When the fuel filler cap is in a closed state, it means that the user has no intention to refuel, or the refueling has been completed; when the single opening time of the fuel filler cap is greater than the preset opening time threshold, it means that the single opening time of the fuel filler cap has exceeded the time required for refueling, and the refueling may be completed, but the refueler forgot to close the fuel filler cap; when the vehicle speed is greater than the preset vehicle speed threshold, it means that the vehicle has been driving and is not in a parked state, and it can also be judged that the refueling has been completed. Therefore, by setting the above-mentioned refueling end conditions, it is possible to more accurately identify whether the refueling is completed, thereby controlling the oil and gas isolation valve to close.

[0070] In order to better understand the present invention, the following Figure 2 The plug-in hybrid vehicle refueling control method provided by the embodiment of the present invention is further described in detail. Figure 2 is a flow chart of another plug-in hybrid vehicle refueling control method provided by an embodiment of the present invention. Figure 2 As shown, the control method includes:

[0071] Step S201, the vehicle stops;

[0072] Step S202, determining whether a door unlocking instruction is received;

[0073] If yes, then further execute step S203; if no, end the process.

[0074] Step S203, opening the oil and gas isolation valve;

[0075] Step S204, determining whether the fuel tank pressure P is less than or equal to a preset pressure threshold value P0, that is, P≤P0;

[0076] If P≤P0, then further execute step S2051, otherwise, execute step S2052;

[0077] Step S2051, unlocking the fuel filler cap;

[0078] Step S2052: determine whether the tank pressure P is greater than the preset pressure threshold value P0 within the preset pressure relief time threshold value t0, that is, determine whether P>P0 within the time t0?;

[0079] If yes, execute step S2053 and step S2051; if no, execute step S2051 directly.

[0080] Step S2053, generating fuel tank pressure sensor fault prompt information;

[0081] Step S206, determining whether the refueling end condition is triggered;

[0082] If yes, execute step S2071; if no, execute step S2072.

[0083] Step S2071, refueling is completed, the oil and gas isolation valve is closed, and the vehicle is locked;

[0084] Step S2072, determining whether the vehicle is in the D / R gear;

[0085] If yes, then further execute step S2073, if no, then return to execute step S206;

[0086] Step S2073: Generate a fuel filler cap open prompt message.

[0087] Based on the same inventive concept, an embodiment of the present invention further provides a plug-in hybrid vehicle refueling control device, which is used to implement the plug-in hybrid vehicle refueling control method of the above embodiment. Figure 3 is a structural block diagram of a plug-in hybrid vehicle refueling control device provided by an embodiment of the present invention, such as Figure 3 As shown, the device 300 includes an isolation valve control module 310 , a fuel filler cap control module 320 and a determination module 330 .

[0088] The isolation valve control module 310 is used to control the oil and gas isolation valve to open in response to a door unlocking instruction when the vehicle stops;

[0089] The fuel filler cap control module 320 is used to control the fuel filler cap to unlock in response to the fuel tank pressure being less than or equal to a preset pressure threshold after the oil and gas isolation valve is opened;

[0090] A determination module 330 is used to determine whether the user intends to refuel based on the open and closed state of the fuel filler cap when the fuel filler cap is unlocked;

[0091] The isolation valve control module 310 is also used to control the oil and gas isolation valve to remain open when it is determined that the user intends to refuel, and then control the oil and gas isolation valve to close after the refueling end condition is triggered.

[0092] Optionally, the refueling end condition includes at least one of the following conditions: the fuel filler lid is in a closed state, the single opening time of the fuel filler lid is greater than a preset opening time threshold, and the vehicle speed is greater than a preset speed threshold.

[0093] Optionally, the determination module 330 is further configured to:

[0094] When the fuel filler cap is in an open state, determining that the user intends to refuel;

[0095] When the fuel filler lid is in the closed state, it is determined that the user has no intention to refuel.

[0096] Optionally, the isolation valve control module 310 is further configured to:

[0097] When it is determined that the user has no intention to refuel, the opening and closing of the oil and gas isolation valve is controlled in association with the vehicle door lock state.

[0098] Optionally, the isolation valve control module 310 is further configured to:

[0099] When the vehicle door lock is in unlocked state, the oil and gas isolation valve is controlled to open;

[0100] When the vehicle door locks are in the locked state, the oil and gas isolation valve is controlled to be closed.

[0101] Optionally, the device further comprises a prompt module, which is used to:

[0102] When the fuel filler cap is in an open state, in response to the vehicle gear being in a forward gear or a reverse gear, a prompt message is generated, and the prompt message is used to remind the user that the fuel filler cap is not closed.

[0103] Optionally, the fuel filler cap control module 320 is further configured to:

[0104] When the oil and gas isolation valve is opened, in response to the fuel tank pressure being greater than a preset pressure threshold and lasting longer than a preset pressure relief time threshold, the fuel filler cap is controlled to be unlocked.

[0105] The specific details of the plug-in hybrid vehicle refueling control method used in the above control device can be understood by corresponding to the relevant descriptions and effects in the plug-in hybrid vehicle refueling control method embodiment shown above, and will not be repeated here.

[0106] Based on the same inventive concept as the above-mentioned plug-in hybrid vehicle refueling control method, the present invention also provides an electronic device, which may include a processor and a memory, wherein the processor and the memory may be connected to each other by bus or other means. The processor may be a central processing unit (CPU). The processor may also be other general-purpose processors, digital signal processors (DSP), application-specific integrated circuits (ASIC), field-programmable gate arrays (FPGA) or other programmable logic devices, discrete gates or transistor logic devices, discrete hardware components and other chips, or a combination of the above-mentioned various types of chips. The memory, as a non-transient computer-readable storage medium, may be used to store non-transient software programs, non-transient computer executable programs and modules, such as program instructions / modules corresponding to the plug-in hybrid vehicle refueling control method in the embodiment of the present invention. The processor executes various functional applications and data processing of the processor by running the non-transient software programs, instructions and modules stored in the memory, that is, realizing the refueling control of the plug-in hybrid vehicle in the above-mentioned method embodiment.

[0107] The memory may include a program storage area and a data storage area, wherein the program storage area may store an operating system and an application required by at least one function; the data storage area may store data created by the processor, etc. In addition, the memory may include a high-speed random access memory, and may also include a non-volatile memory, such as at least one disk storage device, a flash memory device, or other non-volatile solid-state storage device. The one or more modules are stored in the memory, and when executed by the processor, the execution is as follows: Figure 1 A plug-in hybrid vehicle refueling control method in the illustrated embodiment.

[0108] For details of the above electronic equipment, please refer to Figure 1 The corresponding related descriptions and effects in the illustrated embodiments can be understood and will not be repeated here.

[0109] Based on the same inventive concept as the plug-in hybrid vehicle refueling control method, the present invention also provides a computer-readable storage medium, on which computer instructions are stored, and the computer program instructions are used to enable a computer to execute the plug-in hybrid vehicle refueling control method in the above embodiment.

[0110] Those skilled in the art can understand that all or part of the processes in the above-mentioned embodiments can be implemented by instructing the relevant hardware through a computer program, and the program can be stored in a computer-readable storage medium, and when the program is executed, it can include the processes of the embodiments of the above-mentioned methods. Among them, the storage medium can be a read-only memory (ROM), a random access memory (RAM), a flash memory, a hard disk drive (HDD) or a solid-state drive (SSD), etc.; the storage medium can also include a combination of the above-mentioned types of memory.

[0111] The technical solutions provided in the above embodiments of the present application have at least the following technical effects or advantages:

[0112] The embodiment of the present invention provides a plug-in hybrid vehicle refueling control method, device, equipment and storage medium, which associates the opening of the oil and gas isolation valve with the door unlocking instruction. When the vehicle stops and the door unlocking instruction is detected, the oil and gas isolation valve is controlled to open. At the same time, after the oil and gas isolation valve is opened, it is determined whether to control the fuel filler cap to be unlocked according to the size relationship between the fuel tank pressure detected by the fuel tank pressure sensor and the preset pressure threshold. That is, when the fuel tank pressure is less than or equal to the preset pressure threshold, the fuel filler cap is controlled to be unlocked. This method not only relies on the detection value of the fuel tank pressure sensor, but also determines whether the user has the intention to refuel according to the opening and closing state of the fuel filler cap, so that the oil and gas isolation valve can be continuously opened when the user has the intention to refuel and during the refueling process, and is closed after the refueling end condition is triggered, thereby ensuring the smoothness, safety and reliability of refueling. In addition, the whole process does not require the user to trigger the refueling preparation program through physical buttons or soft switches on the central control screen, so that the owners of fuel vehicles can continue the conventional refueling habits of fuel vehicles when using new energy vehicles, reducing the time for users to relearn and adapt, and improving the adaptability and user experience of plug-in hybrid vehicles.

[0113] In the description provided herein, a large number of specific details are described. However, it is understood that embodiments of the present invention can be practiced without these specific details. In some instances, well-known methods, structures and techniques are not shown in detail so as not to obscure the understanding of this description.

[0114] Similarly, it should be understood that in order to streamline the present disclosure and aid in understanding one or more of the various inventive aspects, in the above description of exemplary embodiments of the present invention, various features of the present invention are sometimes grouped together into a single embodiment, figure, or description thereof. However, this disclosed method should not be interpreted as reflecting the intention that the claimed invention requires more features than those explicitly recited in each claim. More specifically, as reflected in the claims below, inventive aspects lie in less than all the features of the individual embodiments disclosed above. Therefore, the claims that follow the specific embodiment are hereby expressly incorporated into the specific embodiment, with each claim itself serving as a separate embodiment of the present invention.

[0115] It should be noted that the above-mentioned embodiments illustrate rather than limit the invention and that those skilled in the art will be able to design alternative embodiments without departing from the scope of the appended claims.

Claims

1. A plug-in hybrid vehicle refueling control method, characterized in that: include: When the vehicle stops, in response to a door unlocking command, the oil and gas isolation valve is controlled to open; When the oil and gas isolation valve is opened, in response to the fuel tank pressure being less than or equal to a preset pressure threshold, the fuel filler cap is controlled to be unlocked; When the fuel filler cap is unlocked, determining whether the user intends to refuel based on the open and closed state of the fuel filler cap; When it is determined that the user intends to refuel, the oil and gas isolation valve is controlled to be continuously opened until the refueling end condition is triggered, and then the oil and gas isolation valve is controlled to be closed.

2. The method according to claim 1, characterized in that The refueling end condition includes at least one of the following conditions: the fuel filler lid is in a closed state, a single opening time of the fuel filler lid is greater than a preset opening time threshold, and a vehicle speed is greater than a preset speed threshold.

3. The method according to claim 1, characterized in that The determining whether the user has a refueling intention according to the open / closed state of the fuel filler cap includes: When the fuel filler cap is in an open state, determining that the user has an intention to refuel; When the fuel filler lid is in the closed state, it is determined that the user has no intention to refuel.

4. The method according to claim 1, characterized in that: The method further comprises: When it is determined that the user has no intention to refuel, the opening and closing of the oil and gas isolation valve is controlled in association with the vehicle door lock state.

5. The method according to claim 4, characterized in that The control of opening and closing of the oil and gas isolation valve is associated with the vehicle door lock state, including: When the vehicle door lock is in an unlocked state, controlling the oil and gas isolation valve to open; When the vehicle door lock is in a locked state, the oil and gas isolation valve is controlled to be closed.

6. The method according to claim 1, characterized in that The method further comprises: When the fuel filler lid is in an open state, in response to the vehicle gear being in a forward gear or a reverse gear, a prompt message is generated, wherein the prompt message is used to prompt a user that the fuel filler lid is not closed.

7. The method according to claim 1, characterized in that The method further comprises: When the oil and gas isolation valve is opened, in response to the fuel tank pressure being greater than a preset pressure threshold and the duration exceeding a preset pressure relief time threshold, the fuel filler cap is controlled to be unlocked.

8. A plug-in hybrid vehicle refueling control device, characterized in that: include: An isolation valve control module is used to control the oil and gas isolation valve to open in response to a door unlocking command when the vehicle is parked; A fuel filler cap control module, configured to control the fuel filler cap to unlock in response to the fuel tank pressure being less than or equal to a preset pressure threshold after the oil and gas isolation valve is opened; a determination module, used to determine whether the user intends to refuel according to the open and closed state of the fuel filler cap after the fuel filler cap is unlocked; The isolation valve control module is also used to control the oil and gas isolation valve to be continuously opened when it is determined that the user intends to refuel, and to control the oil and gas isolation valve to be closed after the refueling end condition is triggered.

9. An electronic device, characterized in that: include: A memory and a processor, wherein the memory and the processor are communicatively connected to each other, the memory stores computer instructions, and the processor executes the plug-in hybrid vehicle refueling control method according to any one of claims 1 to 7 by executing the computer instructions.

10. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores computer instructions, and the computer instructions are used to enable the computer to execute the plug-in hybrid vehicle refueling control method according to any one of claims 1 to 7.

Images