Vehicle, fueling control method thereof, storage medium and vehicle body control unit

Abstract

The invention relates to the technical field of vehicle fuel filling, in particular to a vehicle and a fuel filling control method thereof, a storage medium and a vehicle body control unit. The vehicle and the fuel filling control method thereof are applied to a vehicle body control unit, and the method comprises the steps that when a fuel filling instruction of the vehicle is obtained, a fuel filling request signal is sent to a whole vehicle control unit and a fuel filling control unit; acquiring fuel filling permission signals fed back by the whole vehicle control unit and the fuel filling control unit based on the fuel filling request signal; and a fueling port cover switch of the vehicle is unlocked according to the fueling permitting signal, so that fueling equipment fuels the vehicle through a fueling port cover.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of vehicle fuel filling, in particular to a vehicle, a fuel filling control method thereof, a storage medium and a body control unit. BACKGROUND

[0002] With the research and development of plug-in hybrid vehicles and hydrogen power vehicles, the fuel filling problems of these two types of vehicles have also been increasingly concerned. Since gasoline and hydrogen are both volatile, diffusible, flammable and explosive gases, improper handling during the filling operation can easily cause fire or explosion accidents.

[0003] In the related art, when filling fuel for a plug-in hybrid vehicle, a series of judgments need to be made on the oil tank isolation valve and the running state of the vehicle to ensure safety before the fuel filler can be opened. Similarly, before filling hydrogen for a hydrogen power vehicle, the hydrogen supply system and the state of the vehicle also need to be strictly detected. It can be seen that the related art does not have a universal filling control scheme for vehicles with two power forms, which will lead to waste of subsequent research and development resources. SUMMARY

[0004] The present application aims to at least partially solve one of the technical problems in the related art. To this end, the first object of the present application is to propose a fuel filling strategy that can be applied to both electric hybrid vehicles and hydrogen power vehicles, effectively reducing the repeated investment of research and development resources.

[0005] The fuel filling control method of the vehicle according to the embodiment of the present application is applied to the body control unit, and the method comprises: when a fuel filling instruction of the vehicle is obtained, a fuel filling request signal is sent to the vehicle control unit and the fuel filling control unit; obtaining the allow fuel filling signal fed back by the vehicle control unit and the fuel filling control unit based on the fuel filling request signal; unlocking the fuel filling port cover switch of the vehicle according to the allow fuel filling signal, so that the fuel filling device fills fuel into the vehicle through the fuel filling port cover.

[0006] The fuel filling control method of the vehicle according to the embodiment of the present application further comprises: in the process of filling fuel into the vehicle, a feedback signal sent by the fuel filling control unit is obtained; when it is determined that the feedback signal is an abnormal signal, the fuel filling device stops filling fuel into the vehicle.

[0007] The fuel filling control method of the vehicle according to the embodiment of the present application, after the vehicle control unit receives the fuel filling request signal, judges the driving speed of the vehicle, the running state of the power output unit and the high-voltage power on / off state of the power battery, and feeds back the allow fuel filling signal to the body control unit of the vehicle when the driving speed of the vehicle is zero, the power output unit is in a shutdown state and the high-voltage power of the power battery is in a power-off state.

[0008] According to the refueling control method of the vehicle, when the fuel is hydrogen energy, the fuel refueling control unit judges the pressure, temperature and damage degree of the fuel passing position after receiving the refueling request signal, and feeds back the allowed refueling signal to the vehicle body control unit when the pressure, temperature and damage degree of the fuel passing position are all within the preset range.

[0009] According to the refueling control method of the vehicle, when the fuel is hydrogen energy, the fuel refueling control unit judges the pressure, temperature and damage degree of the fuel passing position after receiving the refueling request signal, and feeds back the allowed refueling signal to the vehicle body control unit when the pressure, temperature and damage degree of the fuel passing position are all within the preset range.

[0010] According to the refueling control method of the vehicle, when the fuel is hydrogen energy, the fuel refueling control unit judges the pressure, temperature and damage degree of the fuel passing position after receiving the refueling request signal, and feeds back the allowed refueling signal to the vehicle body control unit when the pressure, temperature and damage degree of the fuel passing position are all within the preset range.

[0011] According to the refueling control method of the vehicle, when the fuel is hydrogen energy, the fuel refueling control unit judges the pressure, temperature and damage degree of the fuel passing position after receiving the refueling request signal, and feeds back the allowed refueling signal to the vehicle body control unit when the pressure, temperature and damage degree of the fuel passing position are all within the preset range.

[0012] According to the refueling control method of the vehicle, by sending a refueling request signal to the vehicle control unit and the fuel refueling control unit when the fuel refueling instruction of the vehicle is obtained, further, obtaining the allowed refueling signal fed back by the vehicle control unit and the fuel refueling control unit based on the refueling request signal, and finally unlocking the refueling port cover switch of the vehicle according to the allowed refueling signal, so that the refueling equipment refuels the vehicle through the refueling port cover, which improves the fuel refueling efficiency and safety, and realizes the purpose of using the same refueling control strategy for hybrid electric vehicles and hydrogen energy vehicles, effectively saving the resources for subsequent research and development.

[0013] To achieve the above purpose, the second aspect of the present application provides a computer readable storage medium, which stores a vehicle refueling control program, and the vehicle refueling control program is executed by a processor to realize the above-mentioned vehicle refueling control method.

[0014] According to the computer-readable storage medium of the present invention, a vehicle refueling control method is implemented. When a vehicle refueling command is received, a refueling request signal is sent to the vehicle control unit and the refueling control unit. Further, refueling permission signals are obtained from the vehicle control unit and the refueling control unit based on the refueling request signal. Finally, the refueling permission signal unlocks the vehicle's refueling port cap switch, so that the refueling device refuels the vehicle through the refueling port cap. This improves refueling efficiency and safety, and achieves the goal of using the same refueling control strategy for hybrid vehicles and hydrogen fuel cell vehicles, effectively saving resources for subsequent research and development.

[0015] To achieve the above objectives, a third aspect of the present invention provides a vehicle body control unit, which is configured to: upon receiving a vehicle refueling command, send a refueling request signal to a vehicle control unit and a fuel refueling control unit; acquire refueling permission signals fed back by the vehicle control unit and the fuel refueling control unit based on the refueling request signal; and unlock the vehicle's fuel filler cap switch according to the refueling permission signal, so that the refueling device refuels the vehicle through the fuel filler cap.

[0016] According to an embodiment of the present invention, the vehicle body control unit sends a refueling request signal to the vehicle control unit and the fuel refueling control unit when it receives a refueling command from the vehicle; further, it obtains refueling permission signals fed back by the vehicle control unit and the fuel refueling control unit based on the refueling request signal; finally, it unlocks the vehicle's fuel filler cap switch according to the refueling permission signal, so that the refueling device refuels the vehicle through the fuel filler cap. This improves refueling efficiency and safety, and achieves the goal of using the same refueling control strategy for hybrid vehicles and hydrogen fuel cell vehicles, effectively saving resources for subsequent research and development.

[0017] To achieve the above objectives, a fourth aspect of the present invention provides a vehicle including the aforementioned body control unit, which is used to control the vehicle.

[0018] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0019] Figure 1 A flowchart of a vehicle refueling control method provided in an embodiment of the present invention; Figure 2 A flowchart illustrating the feedback signal allowing refueling provided in an embodiment of the present invention; Figure 3This is a control flowchart of the fuel refueling control unit when the fuel is hydrogen, provided in an embodiment of the present invention. Figure 4 This is a control flowchart of the fuel filling control unit when the fuel is gasoline, provided in an embodiment of the present invention. Figure 5 A flowchart illustrating the control method for determining and stopping fuel refueling provided in an embodiment of the present invention. Detailed Implementation

[0020] Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0021] The following description, with reference to the accompanying drawings, describes an embodiment of the vehicle and its fueling control method, storage medium, and body control unit of the present invention.

[0022] refer to Figure 1 This is a flowchart of a vehicle refueling control method provided in an embodiment of the present invention.

[0023] Step S101: Upon receiving a fuel refueling command from the vehicle, a fuel refueling request signal is sent to the vehicle control unit and the fuel refueling control unit. Step S102: Obtain the fuel refueling permission signal fed back by the vehicle control unit and the fuel refueling control unit based on the fuel refueling request signal, respectively; Step S103: Unlock the fuel filler cap switch of the vehicle according to the fuel filler signal, so that the refueling device can refuel the vehicle through the fuel filler cap.

[0024] Specifically, when a user needs to refuel the vehicle, they turn on the fuel refueling switch located in the driver's cab. Upon receiving the fuel refueling switch signal, the body control unit sends a fuel refueling request signal to both the vehicle control unit and the fuel refueling control unit. After receiving the fuel refueling request signal, both the vehicle control unit and the fuel refueling control unit provide feedback on the fuel refueling signal based on the vehicle's status information. When both the vehicle control unit and the fuel refueling control unit provide a refueling permission signal, the body control unit unlocks the vehicle's fuel filler cap switch based on the refueling permission signal, allowing the fuel refueling equipment to refuel the vehicle through the fuel filler cap. The fuel refueled includes gasoline or hydrogen fuel.

[0025] The vehicle refueling method provided by this invention is applicable to both hybrid electric vehicles and hydrogen fuel cell vehicles. By linking multiple control units in the vehicle, it accurately judges the overall vehicle status and issues corresponding refueling permission or prohibition signals based on the overall vehicle status, controlling the opening and closing state of the refueling cap. This achieves efficient control while expanding the adaptability of the control method and effectively reducing subsequent research and development costs.

[0026] refer to Figure 2 This is a flowchart of the feedback signal that allows refueling provided in an embodiment of the present invention.

[0027] As an optional embodiment, after receiving a refueling request signal, the vehicle control unit determines the vehicle's driving speed, the operating status of the power output unit, and the power-on / off status of the high-voltage power battery. When the vehicle's driving speed is zero, the power output unit is in a stopped state, and the high-voltage power battery is in a de-energized state, the vehicle body control unit sends a refueling permission signal back to the vehicle's body control unit.

[0028] Specifically, after the vehicle control unit receives the refueling request signal, in order to ensure safety during refueling, it is necessary to judge the vehicle status and determine whether the current vehicle status meets the refueling conditions. The vehicle status includes the vehicle speed, the operating status of the power output unit, and the power battery high-voltage power-on / off status.

[0029] The vehicle control unit first determines the vehicle's speed. If the vehicle's speed is zero, it means the vehicle is stationary, and the vehicle control unit can further determine the operating status of the power output unit. If the vehicle's speed is not zero, it means the vehicle is in motion, and a signal prohibiting refueling is sent to the body control unit. The body control unit then issues a warning signal, indicating that the vehicle is currently in motion and needs to stop before refueling.

[0030] Furthermore, the vehicle control unit determines the operating status of the power output unit. If the power output unit is in a stopped state, it means that the vehicle is not started or not ignited. The vehicle control unit can then further determine the power battery's high-voltage power-on status. If the power output unit is in an operating state, it means that the vehicle is in a "standby" or "ready to run" state. Refueling in this state may interfere with the refueling unit or other detection devices. In this case, the vehicle control unit sends a refueling prohibition signal to the body control unit. The body control unit then issues a warning signal, indicating that the power output unit is not stopped and refueling can only be done after the power output unit is stopped.

[0031] Furthermore, the vehicle control unit determines the energization status of the vehicle's high-voltage battery. If the high-voltage battery is de-energized, it indicates that the vehicle meets the safety requirements for refueling, and a refueling permission signal can be sent to the vehicle's body control unit. If the high-voltage battery is energized, it indicates that the vehicle is in a "high-voltage standby" or "critical component activation" state. This state may be due to the vehicle just being turned off and the high-voltage system not having completed the de-energization process, or the vehicle being charged or discharging externally, or high-power accessories such as the air conditioner or PTC heater being running. In such cases, there is a risk of electrical short circuit or other component failures, which may generate localized heat or electrical sparks. Refueling in such situations could easily ignite the fuel and cause a safety accident. In this case, the vehicle control unit needs to send a refueling prohibition signal to the body control unit. The body control unit further issues a warning signal, indicating that the high-voltage battery is energized and refueling can only be done after the high-voltage battery is de-energized.

[0032] refer to Figure 3 This is a control flowchart of the fuel refueling control unit when the fuel is hydrogen, provided in an embodiment of the present invention.

[0033] As an optional embodiment, when the fuel is hydrogen, after receiving the refueling request signal, the fuel refueling control unit judges the pressure, temperature and damage level of the fuel passing through the location, and when the pressure, temperature and damage level of the fuel passing through the location are all within the preset range, it sends a refueling permission signal to the vehicle's body control unit.

[0034] As an optional embodiment, if the pressure, temperature, and damage level at the fuel passage location are not all within the preset range, a signal indicating that fuel refueling is not permitted is sent to the vehicle's body control unit, and a fault detection is prompted for the fuel refueling control unit.

[0035] Specifically, when the fuel is hydrogen, after receiving the refueling request signal, the fuel refueling control unit needs to determine whether there is a fault code in the current energy storage system. If there is a fault code in the energy storage system, it needs to send a refueling prohibition signal to the vehicle's body control unit. If there is no fault code in the current energy storage system, it means that the pressure, temperature and damage level of the fuel at the location are within the preset range, and a refueling permission signal can be sent to the vehicle's body control unit.

[0036] The fuel passes through the energy storage system through the energy storage device and the energy storage pipeline. If the hydrogen gas pressure in the energy storage device and / or the energy storage pipeline is not within the preset range, the corresponding pressure sensor will send a fault code indicating a fault in the gas pressure in the energy storage device and / or the energy storage pipeline to the fuel filling control unit. At this time, the fuel filling control unit will send a signal to the vehicle's body control unit prohibiting fuel filling.

[0037] The temperature in the energy storage system includes the temperature of the energy storage device. If the temperature in the energy storage device is not within the preset range, a fault code indicating a temperature fault in the energy storage device will be sent to the fuel filling control unit via the corresponding temperature sensor. At this time, the fuel filling control unit will send a signal to the vehicle's body control unit prohibiting fuel filling.

[0038] The degree of damage in the energy storage system includes whether the various sensors or components of the energy storage device are damaged. If there is no response or garbled response from a sensor in the energy storage device, it indicates that the corresponding sensor is damaged. At this time, the fuel filling control unit sets a fault code for the corresponding sensor and sends a signal to the vehicle's body control unit to prohibit fuel filling.

[0039] It should be noted that if any of the pressure, temperature, or damage level at the fuel passage point is outside the preset range, a fault code will exist in the energy storage system. This means that the fuel filling control unit will send a signal to the vehicle's body control unit prohibiting fuel filling. At the same time, the fuel filling control unit will also send a warning signal to the body control unit, indicating that there is a fault in the energy storage system and that it needs to be checked. The warning signal will be displayed on the vehicle's central control display screen or instrument panel to remind the driver to check.

[0040] refer to Figure 4 This is a control flowchart of the fuel filling control unit when the fuel is gasoline, provided in an embodiment of the present invention.

[0041] As an optional embodiment, when the fuel is gasoline, after receiving the fuel refueling request signal, the fuel refueling control unit sends an opening signal to the fuel tank isolation valve and detects the status of the fuel tank isolation valve. When it is determined that the fuel tank isolation valve is in the open state, it sends a fuel refueling permission signal back to the vehicle's body control unit.

[0042] Specifically, when the fuel is gasoline, after receiving the fuel refueling request signal, the fuel refueling control unit sends an opening signal to the fuel tank isolation valve and further determines whether the fuel tank isolation valve has been successfully opened to ensure that the fuel can be smoothly refueled to the vehicle. After the fuel tank isolation valve is opened, it will send an open status signal back to the fuel refueling control unit. At this time, the fuel refueling control unit confirms that the fuel tank isolation valve is open and sends a fuel refueling permission signal back to the vehicle's body control unit.

[0043] As an optional embodiment, when it is determined that the fuel tank isolation valve is not in the open state, a signal indicating that refueling is not allowed is fed back to the vehicle control unit, and a prompt is made to perform a fault check on the fuel tank isolation valve.

[0044] Specifically, if the fuel filling control unit sends an opening signal to the fuel tank isolation valve after receiving a fuel filling request signal, and the fuel tank isolation valve fails to open successfully, the fuel filling control unit will not receive a corresponding open status signal feedback. Therefore, it will determine that the fuel tank isolation valve is not currently in the open state. At this time, it will send a fuel filling prohibition signal to the vehicle's body control unit and further prompt the user to perform fault detection on the fuel tank isolation valve, so as to remind the user to troubleshoot the fault in time and avoid affecting vehicle safety.

[0045] refer to Figure 5 This is a flowchart of a control method for determining and stopping fuel refueling provided in an embodiment of the present invention.

[0046] As an optional embodiment, the method further includes: acquiring a feedback signal sent by the fuel filling control unit during fuel filling of the vehicle; and stopping the fuel filling equipment from filling the vehicle when it is determined that the feedback signal is an abnormal signal.

[0047] Specifically, after receiving a signal that fueling is permitted, the vehicle's body control unit unlocks the fuel filler cap and connects the fueling device to the fuel filler.

[0048] During the refueling process, the fuel refueling control unit monitors various fuel-related information in real time. For example, when using hydrogen fuel, the injection of hydrogen causes changes in the pressure and temperature of the vehicle's hydrogen storage system. Furthermore, the possibility of hydrogen leakage during refueling can change at any time. Therefore, the fuel refueling control unit needs to monitor fuel status information, including but not limited to the aforementioned factors, in real time. Based on this status information, the fuel refueling control unit sends feedback signals to the vehicle control unit. When the fuel refueling unit detects a normal refueling status, it sends a normal signal to the vehicle control unit, and the refueling equipment continues to refuel the vehicle. When the fuel refueling unit detects an abnormal refueling status, it sends an abnormal signal to the vehicle control unit, which then sends a stop signal to the fuel refueling equipment, stopping the refueling process. By monitoring the fuel refueling status in real time, abnormal situations can be detected promptly, and appropriate feedback can be provided, effectively ensuring safety during refueling.

[0049] It should be noted that when the fuel is hydrogen, an infrared module is installed near the vehicle's fuel filler port. This module transmits information about the hydrogen storage capacity in the energy storage system to the refueling equipment in real time via infrared signals. This information is used to control the flow rate of fuel delivered to the vehicle. When the hydrogen storage capacity reaches the preset level, the infrared module sends a stop refueling signal to control the refueling equipment to stop refueling and prevent fuel spillage that could lead to safety hazards.

[0050] When the fuel is gasoline, the vehicle's fuel storage system will submerge the air nozzle at the front of the refueling device when the fuel is full. At this time, the air nozzle cannot communicate with the outside air, so a slight negative pressure will be generated momentarily in the refueling device's chamber. The negative pressure environment will cause the pressure sensing diaphragm installed in the refueling device's chamber to shift. This pressure sensing diaphragm is mechanically linked to the refueling device's switch valve. Therefore, when the pressure sensing diaphragm shifts, the refueling device's switch valve will close, and the refueling device will stop refueling the vehicle.

[0051] The vehicle refueling control method according to an embodiment of the present invention sends a refueling request signal to the vehicle control unit and the refueling control unit when a refueling command is received; further, it obtains refueling permission signals fed back by the vehicle control unit and the refueling control unit based on the refueling request signal; finally, it unlocks the refueling cap switch of the vehicle according to the refueling permission signal, so that the refueling device refuels the vehicle through the refueling cap. This effectively achieves strong versatility of the refueling strategy, which can be applied to both hybrid vehicles and hydrogen fuel cell vehicles, saving subsequent research and development costs, and ensuring refueling efficiency and safety.

[0052] Based on the same inventive concept, corresponding to the vehicle refueling control method of any of the above embodiments, the present invention also provides a computer-readable storage medium storing a vehicle refueling control program. When the control program is executed by a processor, it causes the computer to execute the vehicle refueling control method of any of the above embodiments.

[0053] The aforementioned non-transitory computer-readable storage media can be any available medium or data storage device that a computer can access, including but not limited to magnetic storage (e.g., floppy disks, hard disks, magnetic tapes, magneto-optical disks (MOs), etc.), optical storage (e.g., CDs, DVDs, BDs, HVDs, etc.), and semiconductor storage (e.g., ROMs, EPROMs, EEPROMs, non-volatile memory (NAND flash), solid-state drives (SSDs)).

[0054] It should be noted that the logic and / or steps represented in the flowchart or otherwise described herein, for example, can be considered as a sequenced list of executable instructions for implementing logical functions, and can be embodied in any computer-readable medium for use by, or in conjunction with, an instruction execution system, apparatus, or device (such as a computer-based system, a processor-included system, or other system that can fetch and execute instructions from, an instruction execution system, apparatus, or device). For the purposes of this specification, "computer-readable medium" can be any means that can contain, store, communicate, propagate, or transmit programs for use by, or in conjunction with, an instruction execution system, apparatus, or device. More specific examples (a non-exhaustive list) of computer-readable media include: an electrical connection having one or more wires (electronic device), a portable computer disk drive (magnetic device), random access memory (RAM), read-only memory (ROM), erasable and editable read-only memory (EPROM or flash memory), fiber optic devices, and portable optical disc read-only memory (CDROM). Alternatively, the computer-readable medium may be paper or other suitable media on which the program can be printed, since the program can be obtained electronically, for example, by optically scanning the paper or other medium, followed by editing, interpreting, or otherwise processing as necessary, and then stored in a computer memory.

[0055] The computer instructions stored in the computer-readable storage medium of the above embodiments are used to cause a computer to execute the vehicle refueling control method of any of the above exemplary method sections. When a vehicle refueling command is received, a refueling request signal is sent to the vehicle control unit and the refueling control unit. Further, refueling permission signals are obtained from the vehicle control unit and the refueling control unit based on the refueling request signal, respectively. Finally, the refueling permission signal unlocks the vehicle's refueling port cap switch, allowing the refueling device to refuel the vehicle through the refueling port cap. This effectively achieves strong versatility in the refueling strategy, enabling simultaneous application to hybrid vehicles and hydrogen-powered vehicles, saving subsequent development costs, and ensuring refueling efficiency and safety.

[0056] Based on the same inventive concept, corresponding to the vehicle refueling control method of any of the above embodiments, the present invention also provides a body control unit, which is used to: send a refueling request signal to the vehicle control unit and the fuel refueling control unit when a refueling command is received from the vehicle; obtain refueling permission signals fed back by the vehicle control unit and the fuel refueling control unit based on the refueling request signal; and unlock the refueling cap switch of the vehicle according to the refueling permission signal, so that the refueling device refuels the vehicle through the refueling cap.

[0057] In some embodiments, the vehicle body control unit is further configured to: acquire a feedback signal sent by the fuel filling control unit during refueling of the vehicle; and stop the refueling equipment from refueling the vehicle when it is determined that the feedback signal is an abnormal signal.

[0058] In some embodiments, the vehicle body control unit is further configured to: after receiving a refueling request signal, determine the vehicle's driving speed, the operating status of the power output unit, and the power-on / off status of the high-voltage power of the power battery, and when the vehicle's driving speed is zero, the power output unit is in a stopped state, and the high-voltage power of the power battery is in a de-energized state, feed back a refueling permission signal to the vehicle's body control unit.

[0059] In some embodiments, the vehicle body control unit is further configured to: when the fuel is hydrogen, after receiving a refueling request signal, the fuel refueling control unit determines the pressure, temperature and damage level of the fuel passage location, and when the pressure, temperature and damage level of the fuel passage location are all within a preset range, feed back a refueling permission signal to the vehicle's vehicle body control unit.

[0060] In some embodiments, the vehicle body control unit is further configured to: when the pressure, temperature, and damage level at the fuel passage location are not all within a preset range, send a signal to the vehicle body control unit indicating that refueling is not permitted, and prompt the refueling control unit to perform fault detection.

[0061] In some embodiments, the body control unit is further configured to: when the fuel is gasoline, after receiving a refueling request signal, send an opening signal to the fuel tank isolation valve and detect the status of the fuel tank isolation valve; and when it is determined that the fuel tank isolation valve is in the open state, send a refueling permission signal to the vehicle's body control unit.

[0062] In some embodiments, the body control unit is further configured to: when it is determined that the fuel tank isolation valve is not in the open state, send a signal to the body control unit that refueling is not permitted, and prompt for fault detection of the fuel tank isolation valve.

[0063] According to an embodiment of the present invention, the vehicle body control unit sends a refueling request signal to the vehicle control unit and the fuel refueling control unit when it receives a refueling command from the vehicle; further, it obtains refueling permission signals fed back by the vehicle control unit and the fuel refueling control unit based on the refueling request signal; finally, it unlocks the vehicle's fuel filler cap switch according to the refueling permission signal, so that the refueling device refuels the vehicle through the fuel filler cap. This effectively achieves strong versatility of the refueling strategy, which can be applied to both hybrid vehicles and hydrogen fuel cell vehicles, saving subsequent development costs and ensuring refueling efficiency and safety.

[0064] Based on the same inventive concept, corresponding to the vehicle body control unit of any of the above embodiments, the present invention also proposes a vehicle including the above-described vehicle body control unit, which is used to control the vehicle and has the same beneficial effects as the vehicle body control unit, which will not be described in detail here.

[0065] Furthermore, other components and functions of the vehicle in the embodiments of the present invention are known to those skilled in the art, and will not be described in detail here to reduce redundancy.

[0066] It should be understood that various parts of the present invention can be implemented in hardware, software, firmware, or a combination thereof. In the above embodiments, multiple steps or methods can be implemented in software or firmware stored in memory and executed by a suitable instruction execution system. For example, if implemented in hardware, as in another embodiment, it can be implemented using any one or a combination of the following techniques known in the art: discrete logic circuits having logic gates for implementing logical functions on data signals, application-specific integrated circuits (ASICs) having suitable combinational logic gates, programmable gate arrays (PGAs), field-programmable gate arrays (FPGAs), etc.

[0067] In the description of this specification, references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0068] Furthermore, the terms "first," "second," etc., used in the embodiments of this invention are for descriptive purposes only and should not be construed as indicating or implying relative importance, or implicitly specifying the number of technical features indicated in this embodiment. Therefore, features defined with terms such as "first" and "second" in the embodiments of this invention can explicitly or implicitly indicate that the embodiment includes at least one of those features. In the description of this invention, the word "multiple" means at least two or more, such as two, three, four, etc., unless otherwise explicitly and specifically defined in the embodiments.

[0069] In this invention, unless otherwise explicitly specified or limited in the embodiments, the terms "installation," "connection," "joining," and "fixing" appearing in the embodiments should be interpreted broadly. For example, a connection can be a fixed connection, a detachable connection, or an integral part; it can also be a mechanical connection, an electrical connection, etc. Of course, it can also be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two components, or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific implementation.

[0070] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A method for controlling fuel refueling in a vehicle, characterized in that, Applied to a body control unit, the method includes: Upon receiving a fuel refueling command from the vehicle, a fuel refueling request signal is sent to the vehicle control unit and the fuel refueling control unit. The vehicle control unit and the fuel refueling control unit respectively obtain the fuel refueling permission signal fed back by the fuel refueling request signal; The refueling port cap switch of the vehicle is unlocked according to the refueling permission signal, so that the refueling device can refuel the vehicle through the refueling port cap.

2. The vehicle refueling control method according to claim 1, characterized in that, The method further includes: During the refueling of the vehicle, a feedback signal sent by the fuel refueling control unit is acquired; When the feedback signal is determined to be an abnormal signal, the refueling equipment stops refueling the vehicle.

3. The vehicle refueling control method according to claim 1, characterized in that, After receiving the refueling request signal, the vehicle control unit determines the vehicle's driving speed, the operating status of the power output unit, and the power battery's high-voltage power-on / off status. When the vehicle's driving speed is zero, the power output unit is in a stopped state, and the power battery's high-voltage power-off state, the vehicle control unit sends a refueling permission signal back to the vehicle's body control unit.

4. The vehicle refueling control method according to claim 1, characterized in that, When the fuel is hydrogen, after receiving the fuel refueling request signal, the fuel refueling control unit judges the pressure, temperature and damage level of the location through which the fuel passes, and when the pressure, temperature and damage level of the location through which the fuel passes are all within a preset range, it feeds back the fuel refueling permission signal to the vehicle body control unit.

5. The vehicle refueling control method according to claim 4, characterized in that, If the pressure, temperature, and damage level at the location where the fuel passes are not all within the preset range, a signal indicating that refueling is not permitted is sent to the vehicle's body control unit, and a fault detection is prompted for the fuel refueling control unit.

6. The vehicle refueling control method according to claim 1, characterized in that, When the fuel is gasoline, after receiving the fuel refueling request signal, the fuel refueling control unit sends an opening signal to the fuel tank isolation valve and detects the status of the fuel tank isolation valve. When it is determined that the fuel tank isolation valve is in the open state, it sends the fuel refueling permission signal back to the vehicle body control unit.

7. The vehicle refueling control method according to claim 6, characterized in that, When it is determined that the fuel tank isolation valve is not in the open state, a signal is sent to the vehicle control unit that refueling is not allowed, and a fault detection is prompted for the fuel tank isolation valve.

8. A computationally readable storage medium, characterized in that, It stores a vehicle refueling control program, which, when executed by a processor, implements the vehicle refueling control method according to any one of claims 1-7.

9. A vehicle body control unit, characterized in that, The vehicle body control unit is used to: send a fuel refueling request signal to the vehicle control unit and the fuel refueling control unit when a fuel refueling command is received from the vehicle; obtain a fuel refueling permission signal fed back by the vehicle control unit and the fuel refueling control unit based on the fuel refueling request signal; and unlock the fuel refueling cap switch of the vehicle according to the fuel refueling permission signal, so that the refueling device refuels the vehicle through the fuel refueling cap.

10. A vehicle, characterized in that, Includes the vehicle body control unit as described in claim 9.

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