Pressure relief control method and apparatus for high-pressure fuel tank of hybrid vehicle, and electronic device

Abstract

Provided in the present application are a pressure relief control method and apparatus for a high-pressure fuel tank of a hybrid vehicle, and an electronic device. A hybrid vehicle uses domain controllers to perform centralized control on network nodes corresponding to each electronic control unit, the domain controllers comprising a first domain controller used for detecting a refueling request, a second domain controller used for carrying out power distribution control on each network node, and a third domain controller used for controlling a fuel tank isolation valve. The method comprises: the first domain controller sending a refueling request; detecting whether the vehicle currently meets a refueling condition and, after it is detected and confirmed that the vehicle currently meets the refueling condition, sending a fuel tank isolation valve power distribution request to the second domain controller, and sending a fuel tank isolation valve opening request to the third domain controller; the second domain controller distributing power to the fuel tank isolation valve; and the third domain controller controlling the fuel tank isolation valve to be opened so as to relieve the pressure of the high-pressure fuel tank. The present application can reduce vehicle manufacturing costs and electric power consumption.

Description

Hybrid vehicle high-pressure fuel tank pressure relief control method, device and electronic equipment

[0001] This application claims priority to the Chinese patent application filed with the China Patent Office on August 2, 2023, with application number 202310968615.2 and invention name “Pressure relief control method, device and electronic equipment for high-pressure fuel tank of hybrid vehicle”, the entire contents of which are incorporated by reference into this application. Technical Field

[0002] The present application relates to the field of new energy technology, and in particular to a pressure relief control method, device and electronic equipment for a high-pressure fuel tank of a hybrid vehicle. Background Art

[0003] To meet domestic vehicle emission regulations, hybrid vehicles typically use high-pressure fuel tanks to store fuel and gas. When the fuel tank pressure is high, the fuel cap becomes difficult to open. Therefore, to ensure that the user can open the fuel cap and refuel, the high-pressure tank must be depressurized before refueling. However, prior art practices for pressure relief control in hybrid vehicles incur high vehicle manufacturing costs.

[0004] Summary of the Invention

[0005] One purpose of the present application is to provide a method, device and electronic equipment for controlling pressure relief of a high-pressure fuel tank of a hybrid vehicle, which can reduce the vehicle manufacturing cost for pressure relief control and reduce the power consumed by the pressure relief control.

[0006] According to one aspect of an embodiment of the present application, a method for controlling pressure relief of a high-pressure fuel tank of a hybrid vehicle is disclosed. The hybrid vehicle uses a domain controller to centrally control network nodes corresponding to various electronic control units. The domain controller includes a first domain controller for detecting refueling requests, a second domain controller for controlling power distribution to various network nodes, and a third domain controller for controlling a fuel tank isolation valve. The method includes:

[0007] In response to the detected refueling request, the first domain controller sends a refueling request;

[0008] In response to the refueling request, detecting whether the vehicle currently meets the refueling conditions, and after confirming that the vehicle currently meets the refueling conditions, sending a fuel tank isolation valve power distribution request to the second domain controller, and sending a fuel tank isolation valve opening request to the third domain controller;

[0009] In response to the power distribution request of the fuel tank isolation valve, the second domain controller distributes power to the fuel tank isolation valve to support normal operation of the fuel tank isolation valve;

[0010] In response to the fuel tank isolation valve opening request, the third domain controller controls the fuel tank isolation valve to open, and relieves pressure in the high-pressure fuel tank to support refueling of the high-pressure fuel tank.

[0011] According to one aspect of an embodiment of the present application, a pressure relief control device for a high-pressure fuel tank of a hybrid vehicle is disclosed. The hybrid vehicle uses a domain controller to centrally control network nodes corresponding to various electronic control units. The domain controller includes a first domain controller for detecting refueling requests, a second domain controller for controlling power distribution to various network nodes, and a third domain controller for controlling a fuel tank isolation valve. The device includes:

[0012] a refueling request detection module configured to, in response to a detected refueling request, send a refueling request to the first domain controller;

[0013] a refueling request response module, configured to, in response to the refueling request, detect whether the vehicle currently meets the refueling conditions, and after confirming that the vehicle currently meets the refueling conditions, send a fuel tank isolation valve power distribution request to the second domain controller, and send a fuel tank isolation valve opening request to the third domain controller;

[0014] a power distribution module, configured to respond to a power distribution request from the fuel tank isolation valve, so that the second domain controller distributes power to the fuel tank isolation valve to support normal operation of the fuel tank isolation valve;

[0015] The isolation valve opening module is configured to respond to the tank isolation valve opening request, and the third domain controller controls the tank isolation valve to open, thereby relieving the pressure of the high-pressure tank to support refueling of the high-pressure tank.

[0016] In an exemplary embodiment of the present application, the device is configured as follows:

[0017] In response to the refueling request, if the entire vehicle is in a power-off state, the first domain controller wakes up the PNC network of some network nodes where the high-pressure fuel tank is located.

[0018] In an exemplary embodiment of the present application, the refueling request response module is configured as follows:

[0019] Acquiring a vehicle speed signal, and detecting a current speed of the vehicle based on the vehicle speed signal;

[0020] If the vehicle speed signal is invalid, or if the current vehicle speed is lower than a preset vehicle speed threshold, it is determined that the vehicle currently meets the refueling conditions.

[0021] In an exemplary embodiment of the present application, after the third domain controller controls the fuel tank isolation valve to open, it feeds back the fuel tank isolation valve switch status and fuel tank pressure to the engine controller. The device is configured as follows:

[0022] If the fuel tank isolation valve is confirmed to be in an open state according to the switch state of the fuel tank isolation valve, the engine controller starts the pressure relief timing;

[0023] If, based on the time obtained by timing and the fuel tank pressure, it is detected that the fuel tank pressure drops to within a preset pressure threshold within a preset time threshold, the engine controller confirms that the pressure relief is successful;

[0024] If it is detected based on the time obtained by the timing and the fuel tank pressure that the fuel tank pressure does not drop to within the pressure threshold within the time threshold, the engine controller determines that the pressure relief has failed.

[0025] In an exemplary embodiment of the present application, the engine controller is connected to a display instrument of a vehicle, and the device is configured as follows:

[0026] After confirming that the fuel tank isolation valve is in the open state, the engine controller sends corresponding pressure relief status information to the display instrument, so that the display instrument displays information describing that the pressure relief is in progress;

[0027] After confirming that the pressure relief is successful, the engine controller sends corresponding pressure relief status information to the display instrument, so that the display instrument displays information describing the success of the pressure relief;

[0028] After confirming that the pressure relief failure has occurred, the engine controller sends corresponding pressure relief status information to the display instrument, so that the display instrument displays information describing the pressure relief failure.

[0029] In an exemplary embodiment of the present application, the device is configured as follows:

[0030] After confirming that the pressure relief is successful, the engine controller sends a fuel tank cap opening request to the third domain controller;

[0031] In response to the fuel tank cover opening request, the third domain controller controls opening the fuel tank cover to support refueling of the high-pressure fuel tank.

[0032] In an exemplary embodiment of the present application, the device is configured as follows:

[0033] After controlling the fuel tank cap to be opened, if a fuel tank cap closing signal is detected, the third domain controller feeds back the fuel tank cap closing signal to the engine controller;

[0034] In response to the fuel tank cap closing signal, the engine controller sends a fuel tank isolation valve closing request to the third domain controller, sends a power distribution cancellation request to the second domain controller, and controls the PNC network where the high-pressure fuel tank is located to enter sleep mode.

[0035] In an exemplary embodiment of the present application, the device is configured as follows:

[0036] If it is detected that the refueling time exceeds the preset refueling time threshold, the engine controller sends a fuel tank isolation valve closing request to the third domain controller, sends a power distribution cancellation request to the second domain controller, and controls the PNC network where the high-pressure fuel tank is located to enter sleep mode.

[0037] According to one aspect of an embodiment of the present application, an electronic device is disclosed, comprising: one or more processing units; a storage unit for storing one or more programs, wherein when the one or more programs are executed by the one or more processors, the electronic device implements any one of the above embodiments.

[0038] According to one aspect of an embodiment of the present application, a computer-readable storage medium is disclosed, on which computer-readable instructions are stored. When the computer-readable instructions are executed by a processor of a computer, the computer is caused to execute any one of the above embodiments.

[0039] According to one aspect of an embodiment of the present application, a computer program product or computer program is provided, comprising computer instructions stored in a computer-readable storage medium. A processor of a computer device reads the computer instructions from the computer-readable storage medium and executes the computer instructions, causing the computer device to perform the methods provided in the various optional implementations described above.

[0040] In an embodiment of the present application, a hybrid vehicle uses a domain controller to centrally control the network nodes corresponding to each electronic control unit. The domain controller includes a first domain controller for detecting refueling requests, a second domain controller for controlling power distribution to each network node, and a third domain controller for controlling the fuel tank isolation valve. During pressure relief control, in response to a detected refueling request, the first domain controller sends a refueling request. In response to the refueling request, the first domain controller detects whether the vehicle currently meets the refueling conditions. After confirming that the vehicle currently meets the refueling conditions, the first domain controller sends a fuel tank isolation valve power distribution request to the second domain controller and a fuel tank isolation valve opening request to the third domain controller. In response to the fuel tank isolation valve power distribution request, the second domain controller distributes power to the fuel tank isolation valve to support normal operation of the fuel tank isolation valve. In response to the fuel tank isolation valve opening request, the third domain controller controls the fuel tank isolation valve to open, depressurizing the high-pressure fuel tank to support refueling. By utilizing a domain controller architecture, the present application integrates the network nodes corresponding to multiple electronic control units under the control of a single domain controller according to their respective functions, thereby reducing the need for bus wiring harnesses and, in turn, reducing vehicle manufacturing costs. Furthermore, by applying the second domain controller to couple the pressure relief control with the power distribution, the static current through the fuel tank isolation valve is reduced, thereby reducing the current consumption of the vehicle.

[0041] Other features and advantages of the present application will become apparent from the following detailed description, or may be learned in part by practice of the present application.

[0042] It should be understood that the foregoing general description and the following detailed description are merely illustrative and are not restrictive of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] The above and other objects, features and advantages of the present application will become more apparent by describing in detail example embodiments thereof with reference to the attached drawings.

[0044] FIG1 shows a flow chart of a method for controlling pressure relief of a high-pressure fuel tank of a hybrid vehicle according to an embodiment of the present application.

[0045] FIG2 shows a schematic diagram of a domain controller architecture used in a hybrid vehicle according to an embodiment of the present application.

[0046] FIG3 shows a detailed flow chart of pressure relief control of a high-pressure fuel tank of a hybrid vehicle according to an embodiment of the present application.

[0047] FIG4 shows a block diagram of a pressure relief control device for a high-pressure fuel tank of a hybrid vehicle according to an embodiment of the present application.

[0048] FIG5 shows a hardware diagram of an electronic device according to an embodiment of the present application. DETAILED DESCRIPTION

[0049] This application provides a power coupling system, control method, and vehicle. To make the objectives, technical solutions, and effects of this application more clear and explicit, the application is further described in detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are intended only to explain this application and are not intended to limit this application.

[0050] Example embodiments will now be described more fully with reference to the accompanying drawings. However, example embodiments can be implemented in a variety of forms and should not be construed as limited to the examples set forth herein; rather, these example embodiments are provided so that the description of this application will be more comprehensive and complete and will fully convey the concepts of the example embodiments to those skilled in the art. The accompanying drawings are merely schematic illustrations of the present application and are not necessarily drawn to scale. Identical reference numerals in the figures indicate identical or similar parts, and thus repeated descriptions thereof will be omitted.

[0051] In addition, the described features, structures or characteristics may be combined in one or more example embodiments in any suitable manner. In the following description, many specific details are provided to provide a full understanding of the example embodiments of the present application. However, those skilled in the art will appreciate that the technical solutions of the present application may be practiced while omitting one or more of the specific details, or other methods, components, steps, etc. may be adopted. In other cases, known structures, methods, implementations or operations are not shown or described in detail to avoid obscuring the main content and making various aspects of the present application vague.

[0052] Some of the blocks shown in the accompanying drawings are functional entities that do not necessarily correspond to physically or logically independent entities. These functional entities may be implemented in software, in one or more hardware modules or integrated circuits, or in different networks and / or processor devices and / or microcontroller devices.

[0053] To meet domestic vehicle emission regulations, traditional fuel vehicles typically use a carbon canister to absorb volatile oil and vapor from the fuel tank. The running engine then desorbs and burns the adsorbed oil and vapor in the canister, reducing the amount of oil and vapor emitted into the atmosphere. However, in high-temperature driving environments, the engine's desorption capacity is insufficient, and the carbon canister is not fully desorbed. This causes a large amount of oil and vapor in the fuel tank to be discharged into the canister, which can then puncture the canister, causing oil and vapor to overflow and exceeding emission standards.

[0054] Plug-in Hybrid Electric Vehicles (PHEVs) face a more significant challenge in controlling fuel and gas emissions than traditional fuel vehicles. This is because PHEVs primarily rely on battery power, resulting in shorter engine runtimes and a lower desorption capacity, making it difficult to effectively desorb gas from the carbon canister. Therefore, to prevent large amounts of fuel and gas from accumulating in the canister and potentially leaking into the atmosphere, PHEVs use high-pressure fuel tanks to store the gas. However, because gasoline in the high-pressure tank continuously evaporates, the tank pressure remains high over time. High pressure makes the fuel cap difficult to open. Therefore, to ensure that the fuel cap can be opened and refueled, the tank must be depressurized before refueling.

[0055] In the prior art, hybrid vehicles typically utilize a distributed layout and control system for their various electronic control units (ECUs) for high-pressure fuel tank pressure relief control. This results in the use of numerous bus wiring harnesses, leading to high vehicle manufacturing costs.

[0056] In response to the above-mentioned defects in the relevant technologies, the present application provides a method for pressure relief control of a high-pressure fuel tank of a hybrid vehicle. In the present application, a hybrid vehicle uses a domain controller to centrally control the network nodes corresponding to each electronic control unit ECU. Specifically, there are three main domain controllers related to pressure relief control - a first domain controller for detecting refueling requests, a second domain controller for power distribution control of each network node, and a third domain controller for controlling the fuel tank isolation valve. Through the application of the domain controller architecture, the present application integrates the network nodes corresponding to multiple electronic control units ECU under the control of one domain controller according to their functions, thereby reducing the need for the use of bus wiring harnesses and further reducing vehicle manufacturing costs.

[0057] FIG1 shows a flow chart of a method for controlling pressure relief of a high-pressure fuel tank of a hybrid vehicle provided by the present application. Referring to FIG1 , the method provided by the present application includes:

[0058] Step S110: In response to the detected refueling request, the first domain controller sends a refueling request;

[0059] Step S120: In response to the refueling request, detecting whether the vehicle currently meets the refueling conditions, and after confirming that the vehicle currently meets the refueling conditions, sending a fuel tank isolation valve power distribution request to the second domain controller, and sending a fuel tank isolation valve opening request to the third domain controller;

[0060] Step S130: In response to the power distribution request of the fuel tank isolation valve, the second domain controller distributes power to the fuel tank isolation valve to support normal operation of the fuel tank isolation valve;

[0061] Step S140: In response to the fuel tank isolation valve opening request, the third domain controller controls the fuel tank isolation valve to open, and relieves the pressure of the high-pressure fuel tank to support refueling of the high-pressure fuel tank.

[0062] In this embodiment of the present application, the vehicle is equipped with an electronic control unit (ECU) for interacting with the driver to detect refueling instructions issued by the driver. Furthermore, the network nodes corresponding to the electronic control units (ECUs) for detecting refueling instructions are connected to a first domain controller. After detecting the refueling instructions, the ECUs send relevant signals to the first domain controller, which then detects the refueling request.

[0063] After the first domain controller detects a refueling request, it sends it to the engine management system (EMS). Upon receiving the refueling request, the EMS checks whether the vehicle currently meets the refueling requirements. If not, refueling is not appropriate, and the refueling request is ignored, eliminating the need to depressurize the high-pressure fuel tank.

[0064] After detecting and confirming that the vehicle currently meets the refueling conditions, the engine controller EMS sends a fuel tank isolation valve power distribution request to the second domain controller to request the second domain controller to distribute power to the fuel tank isolation valve; and the engine controller EMS also sends a fuel tank isolation valve opening request to the third domain controller to request the third domain controller to open the fuel tank isolation valve.

[0065] After receiving the power distribution request for the fuel tank isolation valve, the second domain controller distributes power to the fuel tank isolation valve, allowing it to operate normally with the power supply—opening or closing normally in response to commands from the third domain controller. It should be noted that when refueling is not required, the second domain controller will control the fuel tank isolation valve to a dormant state, reducing the static current flowing through the valve and thus reducing the vehicle's current consumption.

[0066] After receiving the fuel tank isolation valve opening request, the third domain controller sends an opening command to the fuel tank isolation valve, controlling the fuel tank isolation valve to open, allowing the oil and gas stored in the high-pressure fuel tank to be discharged into the carbon canister, thereby relieving the pressure in the high-pressure fuel tank and reducing the fuel pressure in the high-pressure fuel tank, thereby allowing the fuel tank cap to be opened normally and refueling to be carried out normally. It should be noted that when refueling is not required, the third domain controller usually controls the fuel tank isolation valve to be closed to ensure that the oil and gas in the high-pressure fuel tank are sealed.

[0067] In one embodiment, the electronic control unit (ECU) for detecting a refueling command is a physical or virtual button provided in the vehicle, so that the driver can issue a refueling command by interacting with the button. For example, the driver can long-press the refueling button provided in the vehicle to issue a refueling command to the vehicle.

[0068] In one embodiment, the electronic control unit (ECU) for detecting refueling instructions is a voice acquisition device installed in the vehicle, so that the driver can issue refueling instructions by interacting with the voice acquisition device. For example, the driver can issue a refueling instruction by speaking into a microphone installed in the vehicle.

[0069] In one embodiment, the method provided by the present application further includes:

[0070] In response to a refueling request, if the entire vehicle is in a power-off state, the first domain controller wakes up the PNC network of some network nodes where the high-pressure fuel tank is located.

[0071] In this embodiment, when the vehicle is powered off, most of its electronic control units (ECUs) are dormant. In this situation, upon receiving a refueling request, the first domain controller awakens the PNC (Partial Networking Management) network where the high-pressure fuel tank resides, enabling the PNC network to further distribute power and respond to control commands. For dormant ECUs outside the PNC network, the first domain controller maintains them in dormant mode, thereby avoiding the need to awaken ECUs unrelated to pressure relief / refueling. This minimizes the vehicle's quiescent current and further reduces the vehicle's current consumption.

[0072] Among them, the PNC network where the high-pressure fuel tank is located, in addition to the fuel tank isolation valve, usually also includes other electronic control units ECU such as the fuel tank cap controller and the fuel tank pressure sensor.

[0073] It should be noted that, taking CAN (Controller Area Network) network management under the AUTOSAR (Automotive Open System Architecture) framework as an example, the basic principle for waking up network nodes is that when the CAN bus is dormant, the CAN transceiver in the CAN node can be awakened by CAN signals. If a CAN network management message with a specific ID is received, the CAN node network will be passively awakened, thereby enabling information exchange across the entire network. The implementation strategy for selectively waking up the PNC network is that the CAN node not only needs to receive the corresponding CAN network management message with a specific ID, but also needs to determine whether the information bits carried by the CAN data frame contain the data command set for the node. The CAN node can only be awakened if both of these match.

[0074] In one embodiment, detecting whether the vehicle currently meets the refueling conditions includes:

[0075] Acquire a vehicle speed signal, and detect the current speed of the vehicle based on the vehicle speed signal;

[0076] If the vehicle speed signal is invalid, or if the current vehicle speed is lower than a preset vehicle speed threshold, it is determined that the vehicle currently meets the refueling conditions.

[0077] In this embodiment, after receiving the refueling request, the engine controller EMS obtains the vehicle speed signal and detects whether the vehicle speed signal is valid. If the vehicle speed signal is invalid, it means that the vehicle is currently parked and it is safe to refuel, and the vehicle is confirmed to meet the refueling conditions.

[0078] If the speed signal is valid, the system then checks the vehicle's current speed based on the speed signal and then checks whether the current speed is below a preset speed threshold. If the current speed is below the threshold, the vehicle is currently traveling at a low speed and can safely refuel, confirming that the vehicle currently meets the refueling conditions. Conversely, if the current speed is not below the threshold, the vehicle is currently traveling at a high speed where refueling is not appropriate, confirming that the vehicle currently does not meet the refueling conditions.

[0079] In one embodiment, after the third domain controller controls the fuel tank isolation valve to open, the third domain controller feeds back the fuel tank isolation valve switch status and fuel tank pressure to the engine controller. The method further includes:

[0080] If the fuel tank isolation valve is confirmed to be in the open state according to the switch state of the fuel tank isolation valve, the engine controller starts the pressure relief timing;

[0081] If, based on the time obtained by timing and the fuel tank pressure, it is detected that the fuel tank pressure drops to within the preset pressure threshold within the preset time threshold, the engine controller confirms that the pressure relief is successful;

[0082] If, based on the time obtained by timing and the fuel tank pressure, the detection confirms that the fuel tank pressure has not dropped to within the pressure threshold within the time threshold, the engine controller confirms that the pressure relief has failed.

[0083] In this embodiment, a fuel tank pressure sensor is provided in the high-pressure fuel tank, and the fuel tank pressure sensor is connected to the third domain controller to send the detected fuel tank pressure to the third domain controller in real time.

[0084] After the third domain controller controls the fuel tank isolation valve to open, it feeds back the switch status of the fuel tank isolation valve to the engine controller EMS, and feeds back the fuel tank pressure received from the fuel tank pressure sensor to the engine controller EMS.

[0085] After receiving the switch status of the fuel tank isolation valve, the engine controller (EMS) can confirm whether the fuel tank isolation valve is open or closed based on the switch status. After confirming that the fuel tank isolation valve is open, the engine controller (EMS) can confirm that the high-pressure fuel tank is in a pressure relief state and then start the pressure relief timer. Based on the timed time and the received fuel tank pressure, the engine controller (EMS) can confirm whether the pressure relief failure was successful.

[0086] Specifically, the engine controller (EMS) detects and confirms whether the fuel tank pressure has dropped to within a preset pressure threshold within a preset time threshold based on the measured time and the received fuel tank pressure. If the fuel tank pressure has dropped to within the pressure threshold within the time threshold, the pressure relief is considered successful. Conversely, if the fuel tank pressure has not dropped to within the pressure threshold within the time threshold, the pressure relief is considered unsuccessful.

[0087] In one embodiment, the engine controller is connected to a display instrument of the vehicle, and the method provided by the present application further includes:

[0088] After confirming that the fuel tank isolation valve is in the open state, the engine controller sends corresponding pressure relief status information to the display instrument, so that the display instrument displays information describing that the pressure relief is in progress;

[0089] After confirming that the pressure relief is successful, the engine controller sends corresponding pressure relief status information to the display instrument, so that the display instrument displays information describing the success of the pressure relief;

[0090] After confirming the pressure relief failure, the engine controller sends corresponding pressure relief status information to the display instrument, so that the display instrument displays information describing the pressure relief failure.

[0091] In this embodiment, the engine controller EMS is connected to the vehicle's display instrument ICM (Instrument Communicating Manager Interface) to transmit the pressure relief related information to the display instrument ICM for display, thereby reminding the driver of the pressure relief related information.

[0092] Specifically, after confirming that the fuel tank isolation valve is open, the engine controller (EMS) sends a pressure relief status message corresponding to "High-pressure fuel tank pressure relief in progress" to the instrument cluster (ICM). Upon receiving the pressure relief status message corresponding to "High-pressure fuel tank pressure relief in progress," the ICM displays a text message or icon describing the pressure relief in progress to remind the driver that the high-pressure fuel tank is currently being relieved.

[0093] After confirming successful pressure relief, the engine controller (EMS) sends a pressure relief status message corresponding to "High-pressure fuel tank pressure relief successful" to the instrument display (ICM). Upon receiving this information, the ICM displays a text message or icon indicating successful pressure relief, reminding the driver that the high-pressure fuel tank has been successfully relieved and that refueling can proceed.

[0094] After confirming that the pressure relief has failed, the engine controller (EMS) sends a pressure relief status message corresponding to "High-pressure fuel tank pressure relief failure" to the instrument panel (ICM). Upon receiving the pressure relief status message corresponding to "High-pressure fuel tank pressure relief failure," the ICM displays a text message or icon describing the pressure relief failure to remind the driver that the high-pressure fuel tank pressure relief was not successfully completed and that further refueling is not advisable.

[0095] In one embodiment, the method provided by the present application further includes:

[0096] After confirming that the pressure relief is successful, the engine controller sends a fuel tank cap opening request to the third domain controller;

[0097] In response to the fuel tank cover opening request, the third domain controller controls opening the fuel tank cover to support refueling of the high-pressure fuel tank.

[0098] In this embodiment, the fuel tank cap's electronic control unit (ECU) (e.g., the fuel tank cap's motor) is connected to a third domain controller, which is primarily responsible for controlling the fuel tank cap's opening and closing. After confirming successful pressure relief, the engine controller (EMS) sends a fuel tank cap opening request to the third domain controller, requesting it to open the fuel tank cap. Upon receiving the request, the third domain controller controls the opening of the fuel tank cap.

[0099] The driver can directly and intuitively confirm that further refueling is possible based on the open fuel tank cap; and the driver no longer needs to manually open the fuel tank cap, saving the operation required for refueling.

[0100] In one embodiment, the method provided by the present application further includes:

[0101] After the fuel tank cap is controlled to be opened, if a fuel tank cap closing signal is detected, the third domain controller feeds back the fuel tank cap closing signal to the engine controller;

[0102] In response to the fuel tank cap closing signal, the engine controller sends a fuel tank isolation valve closing request to the third domain controller, sends a power distribution cancellation request to the second domain controller, and controls the PNC network where the high-pressure fuel tank is located to enter sleep mode.

[0103] In this embodiment, after refueling, the driver can manually close the fuel tank cap; alternatively, the fuel tank cap is configured to automatically close when the fuel gun is withdrawn from the high-pressure fuel tank. Thus, after the driver completes refueling, the fuel tank cap enters a closed state, and the fuel tank cap's electronic control unit (ECU) generates a fuel tank cap closing signal.

[0104] Therefore, after the third domain controller controls the opening of the fuel tank cap, if it detects a fuel tank cap closing signal, it feeds the fuel tank cap closing signal back to the engine controller (EMS). Upon receiving the fuel tank cap closing signal, the EMS confirms that refueling is complete and no further refueling is necessary. It then terminates pressure relief by sending a fuel tank isolation valve closing request to the third domain controller, causing it to close the fuel tank isolation valve. It also sends a power distribution cancellation request to the second domain controller, causing it to cancel power distribution to the PNC network where the high-pressure fuel tank resides. The EMS also controls the PNC network where the high-pressure fuel tank resides to enter sleep mode, reducing power consumption within the network.

[0105] In one embodiment, the method provided by the present application further includes:

[0106] If it is detected that the refueling time exceeds the preset refueling time threshold, the engine controller sends a fuel tank isolation valve closing request to the third domain controller, sends a power distribution cancellation request to the second domain controller, and controls the PNC network where the high-pressure fuel tank is located to enter sleep mode.

[0107] In this embodiment, the engine controller EMS can start timing the refueling time after confirming that the vehicle currently meets the refueling conditions; it can also start timing the refueling time after receiving the fuel tank cap opening signal feedback from the third domain controller.

[0108] If it is detected that the refueling time exceeds the preset refueling time threshold, it means that the refueling has timed out; from the perspective of vehicle power management, in order to avoid the risk of power loss caused by refueling timeout, the engine controller EMS forcibly terminates the pressure relief - sends a fuel tank isolation valve closing request to the third domain controller, so that the third domain controller closes the fuel tank isolation valve; and sends a power distribution cancellation request to the second domain controller, so that the second domain controller cancels the power distribution to the PNC network where the high-pressure fuel tank is located; and also controls the PNC network where the high-pressure fuel tank is located to enter sleep mode to reduce the power consumption of the PNC network where the high-pressure fuel tank is located.

[0109] Figure 2 shows a schematic diagram of a domain controller architecture used in a hybrid vehicle according to an embodiment of the present application. Figure 3 shows a detailed flow chart of pressure relief control of a high-pressure fuel tank of a hybrid vehicle according to an embodiment of the present application.

[0110] Referring to Figures 2 and 3 , in one embodiment, a hybrid vehicle includes four domain controllers related to pressure relief control: the first domain controller ZCU_L, the second domain controller ZCU_F, the third domain controller ZCU_T, and the central domain controller CCU. In addition to these four domain controllers, there are also an engine controller (EMS) and an instrument cluster (ICM). These controllers communicate with each other using a controller area network (CAN).

[0111] The ZCU_L is connected to the vehicle's refueling button and detects refueling requests triggered by the button. The ZCU_F controls power distribution to various network nodes. The ZCU_T is connected to the fuel tank isolation valve, fuel tank cap ECU, and fuel tank pressure sensor. It detects the open / close status of the fuel tank isolation valve, controls the opening / closing of the fuel tank isolation valve, detects the open / close status of the fuel tank cap, controls the opening / closing of the fuel tank cap, and detects the fuel tank pressure reported by the fuel tank pressure sensor. The CCU primarily acts as a gateway, forwarding signals between domain controllers and other controllers.

[0112] In this embodiment, the driver triggers a refueling request by pressing and holding the refueling button of the vehicle for more than 2 seconds. If the refueling button is pressed for less than 2 seconds, the refueling request is not triggered.

[0113] After the ZCU_L detects a refueling request, if the vehicle is powered off, the ZCU_L needs to send an additional network management message to wake up the PNC network where the high-pressure fuel tank is located, wake up all ECUs related to the high-pressure fuel tank to cooperate with refueling, and maintain the network management message for a certain period of time (for example, maintaining the network management message for at least 5 seconds). Then, the ZCU_L sends the refueling request to the CCU via the CANFD (CAN Flexible Data-rate) bus, and the CCU forwards the refueling request to the EMS.

[0114] After the PNC network, where the high-pressure fuel tank resides, is awakened, the EMS begins receiving application messages. Upon receiving the refueling request, the EMS determines whether the vehicle speed signal is invalid. If the speed signal is valid, it then determines whether the current vehicle speed is below a preset speed threshold to determine whether the vehicle currently meets the refueling conditions.

[0115] If the current vehicle speed is not lower than the speed threshold, the EMS determines that the vehicle does not currently meet the refueling conditions and ignores the refueling request.

[0116] If the vehicle speed signal is invalid, or the current vehicle speed is lower than the speed threshold, the EMS confirms that the vehicle currently meets the refueling conditions, enters the refueling control process, performs pressure relief control, maintains the PNC network and starts refueling timing.

[0117] After the EMS enters the refueling control process, it sends a FTIV (Fuel Tank Isolating Valve) valve power distribution request to the ZCU_F, which distributes power to the FTIV valve to ensure that the FTIV valve can operate normally. At the same time, the EMS sends a FTIV valve opening request to the ZCU_T, which controls the FTIV valve to open and relieve the pressure in the high-pressure tank.

[0118] After receiving the FTIV valve opening request, ZCU_T controls the FTIV valve to open and feeds back the FTIV valve switch status and tank pressure to EMS through CCU.

[0119] After the EMS confirms the FTIV valve is open based on its status, it sends the corresponding pressure relief status information to the ICM. The ICM then displays a text message to alert the driver that pressure relief is in progress. It should be noted that the ICM displays each pressure relief status message for a specific duration (e.g., 0.5 seconds) before transitioning to the next pressure relief status message to ensure the driver's awareness of the pressure relief status.

[0120] In addition, after the EMS confirms that the FTIV valve is in the open state based on the FTIV valve switch status, it enables the timer and starts the pressure relief timing, while detecting the fuel tank pressure in real time.

[0121] If the fuel tank pressure does not drop below the preset pressure threshold within the preset time, the EMS confirms that the pressure relief has failed and updates the pressure relief status information sent to the instrument cluster ICM to "pressure relief failure." This causes the ICM to display a text message alerting the driver to the pressure relief failure. If the pressure relief fails, the EMS terminates the pressure relief.

[0122] If the fuel tank pressure drops to within a preset pressure threshold (e.g., 2 kPa) within a preset time threshold (e.g., 15 seconds), the EMS confirms successful pressure relief and updates the pressure relief status information sent to the instrument cluster ICM to indicate successful pressure relief. This causes the ICM to display a text message alerting the driver to the successful pressure relief. After successful pressure relief, the EMS sends a fuel tank cap opening request to the ZCU_T, which controls the fuel tank cap motor to execute the opening action, automatically opening the fuel tank cap for further refueling.

[0123] After refueling is completed within the preset refueling time, the fuel tank cap is closed, and the ZCU_T reports the cap open / close status to the EMS via the CANFD bus. Based on this information, the EMS verifies that the cap is closed and terminates pressure relief by sending a power distribution cancellation request to the ZCU_F and a FTIV valve close request to the ZCU_T. Simultaneously, the EMS stops sending network management messages, waking up the PNC network where the high-pressure fuel tank resides, and placing related network nodes into sleep mode.

[0124] If the fuel tank cap is not closed for a long time, causing the refueling time to exceed the preset refueling time threshold (for example: 20 minutes), then from the perspective of vehicle power management, in order to avoid the risk of power loss caused by refueling timeout, the EMS will forcibly terminate the pressure relief - sending a power distribution cancellation request to ZCU_F and a FTIV valve closing request to ZCU_T; at the same time, the EMS will stop sending network management messages, terminate the wake-up of the PNC network where the high-pressure fuel tank is located, and control the relevant network nodes to enter sleep mode.

[0125] Moreover, during the non-refueling pressure relief period, if the ZCU_T detects that the fuel tank pressure is too high and exceeds the preset upper pressure threshold (for example: 40kPa), the ZCU_T will automatically open the FTIV valve to relieve the pressure, and discharge the oil and gas to the engine through the carbon canister solenoid valve, so that the fuel tank pressure drops to a reasonable pressure range (for example: 20~25kPa) and then close the FTIV valve.

[0126] FIG4 shows a block diagram of a pressure relief control device for a high-pressure fuel tank of a hybrid vehicle according to an embodiment of the present application. The hybrid vehicle uses a domain controller to centrally control network nodes corresponding to various electronic control units. The domain controller includes a first domain controller for detecting refueling requests, a second domain controller for controlling power distribution to various network nodes, and a third domain controller for controlling a fuel tank isolation valve. The device includes:

[0127] a refueling request detection module 210 configured to, in response to a detected refueling request, send a refueling request to the first domain controller;

[0128] The refueling request response module 220 is configured to detect whether the vehicle currently meets the refueling conditions in response to the refueling request, and after confirming that the vehicle currently meets the refueling conditions, send a fuel tank isolation valve power distribution request to the second domain controller and send a fuel tank isolation valve opening request to the third domain controller;

[0129] The power distribution module 230 is configured to respond to the power distribution request of the fuel tank isolation valve, and the second domain controller distributes power to the fuel tank isolation valve to support normal operation of the fuel tank isolation valve;

[0130] The isolation valve opening module 240 is configured to respond to the tank isolation valve opening request, and the third domain controller controls the tank isolation valve to open, thereby relieving the pressure of the high-pressure tank to support refueling of the high-pressure tank.

[0131] In an exemplary embodiment of the present application, the device is configured as follows:

[0132] In response to a refueling request, if the entire vehicle is in a power-off state, the first domain controller wakes up the PNC network of some network nodes where the high-pressure fuel tank is located.

[0133] In an exemplary embodiment of the present application, the refueling request response module 220 is configured to:

[0134] Acquire a vehicle speed signal, and detect the current speed of the vehicle based on the vehicle speed signal;

[0135] If the vehicle speed signal is invalid, or if the current vehicle speed is lower than a preset vehicle speed threshold, it is determined that the vehicle currently meets the refueling conditions.

[0136] In an exemplary embodiment of the present application, after the third domain controller controls the fuel tank isolation valve to open, it feeds back the fuel tank isolation valve switch status and fuel tank pressure to the engine controller. The device is configured as follows:

[0137] If the fuel tank isolation valve is confirmed to be in the open state according to the switch state of the fuel tank isolation valve, the engine controller starts the pressure relief timing;

[0138] If, based on the time obtained by timing and the fuel tank pressure, it is detected that the fuel tank pressure drops to within the preset pressure threshold within the preset time threshold, the engine controller confirms that the pressure relief is successful;

[0139] If, based on the time obtained by timing and the fuel tank pressure, the detection confirms that the fuel tank pressure has not dropped to within the pressure threshold within the time threshold, the engine controller confirms that the pressure relief has failed.

[0140] In an exemplary embodiment of the present application, the engine controller is connected to a display instrument of a vehicle, and the device is configured as follows:

[0141] After confirming that the fuel tank isolation valve is in the open state, the engine controller sends corresponding pressure relief status information to the display instrument, so that the display instrument displays information describing that the pressure relief is in progress;

[0142] After confirming that the pressure relief is successful, the engine controller sends corresponding pressure relief status information to the display instrument, so that the display instrument displays information describing the success of the pressure relief;

[0143] After confirming the pressure relief failure, the engine controller sends corresponding pressure relief status information to the display instrument, so that the display instrument displays information describing the pressure relief failure.

[0144] In an exemplary embodiment of the present application, the device is configured as follows:

[0145] After confirming that the pressure relief is successful, the engine controller sends a fuel tank cap opening request to the third domain controller;

[0146] In response to the fuel tank cover opening request, the third domain controller controls opening the fuel tank cover to support refueling of the high-pressure fuel tank.

[0147] In an exemplary embodiment of the present application, the device is configured as follows:

[0148] After the fuel tank cap is controlled to be opened, if a fuel tank cap closing signal is detected, the third domain controller feeds back the fuel tank cap closing signal to the engine controller;

[0149] In response to the fuel tank cap closing signal, the engine controller sends a fuel tank isolation valve closing request to the third domain controller, sends a power distribution cancellation request to the second domain controller, and controls the PNC network where the high-pressure fuel tank is located to enter sleep mode.

[0150] In an exemplary embodiment of the present application, the device is configured as follows:

[0151] If it is detected that the refueling time exceeds the preset refueling time threshold, the engine controller sends a fuel tank isolation valve closing request to the third domain controller, sends a power distribution cancellation request to the second domain controller, and controls the PNC network where the high-pressure fuel tank is located to enter sleep mode.

[0152] The electronic device 30 according to an embodiment of the present application is described below with reference to Figure 5. The electronic device 30 shown in Figure 5 is merely an example and should not limit the functions and scope of use of the embodiment of the present application.

[0153] As shown in Figure 5, electronic device 30 is implemented as a general-purpose computing device. Components of electronic device 30 may include, but are not limited to, at least one processing unit 310, at least one storage unit 320, and a bus 330 connecting various system components (including storage unit 320 and processing unit 310).

[0154] The storage unit 320 stores program code that can be executed by the processing unit 310, so that the processing unit 310 performs the steps according to various exemplary embodiments of the present invention described in the description of the exemplary method above. For example, the processing unit 310 can perform the steps shown in Figure 1.

[0155] The storage unit 320 may include a readable medium in the form of a volatile storage unit, such as a random access memory unit (RAM) 3201 and / or a cache memory unit 3202 , and may further include a read-only memory unit (ROM) 3203 .

[0156] The storage unit 320 may also include a program / utility 3204 having a set (at least one) of program modules 3205, such program modules 3205 including but not limited to: an operating system, one or more application programs, other program modules, and program data, each of which or some combination may include an implementation of a network environment.

[0157] Bus 330 may represent one or more of several types of bus structures, including a memory bus or memory controller, a peripheral bus, an accelerated graphics port, a processing unit, or a local bus using any of a variety of bus architectures.

[0158] The electronic device 30 can also communicate with one or more external devices 400 (e.g., a keyboard, a pointing device, a Bluetooth device, etc.), one or more devices that enable a user to interact with the electronic device 30, and / or any device that enables the electronic device 30 to communicate with one or more other computing devices (e.g., a router, a modem, etc.). This communication can occur via an input / output (I / O) interface 350. The I / O interface 350 is connected to a display unit 340. Furthermore, the electronic device 30 can communicate with one or more networks (e.g., a local area network (LAN), a wide area network (WAN), and / or a public network such as the Internet) via a network adapter 360. As shown, the network adapter 360 communicates with other modules of the electronic device 30 via the bus 330. It should be understood that, although not shown in the figure, other hardware and / or software modules can be used in conjunction with the electronic device 30, including but not limited to microcode, device drivers, redundant processing units, external disk drive arrays, RAID systems, tape drives, and data backup storage systems.

[0159] Through the description of the above embodiments, it is easy for those skilled in the art to understand that the example embodiments described herein can be implemented by software or by combining software with necessary hardware. Therefore, the technical solution according to the embodiments of the present application can be embodied in the form of a software product, which can be stored in a non-volatile storage medium (which can be a CD-ROM, a USB flash drive, a mobile hard disk, etc.) or on a network, and includes several instructions to enable a computing device (which can be a personal computer, a server, a terminal device, or a network device, etc.) to execute the method according to the embodiments of the present application.

[0160] In an exemplary embodiment of the present application, a computer-readable storage medium is further provided, on which computer-readable instructions are stored. When the computer-readable instructions are executed by a processor of a computer, the computer is caused to execute the method described in the above method embodiment.

[0161] According to one embodiment of the present application, a program product for implementing the method in the above method embodiment is also provided. The program product may be a portable compact disc read-only memory (CD-ROM) and includes program code, and can be run on a terminal device, such as a personal computer. However, the program product of the present invention is not limited thereto. In this document, a readable storage medium may be any tangible medium containing or storing a program that can be used by or in conjunction with an instruction execution system, apparatus, or device.

[0162] The program product may employ any combination of one or more readable media. The readable medium may be a readable signal medium or a readable storage medium. The readable storage medium may be, for example, but not limited to, an electrical, magnetic, optical, electromagnetic, infrared, or semiconductor system, device, or component, or any combination thereof. More specific examples (a non-exhaustive list) of readable storage media include: an electrical connection with one or more wires, a portable disk, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disk read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination thereof.

[0163] A computer-readable signal medium may include a data signal propagated in baseband or as part of a carrier wave, which carries readable program code. Such propagated data signals may take a variety of forms, including but not limited to electromagnetic signals, optical signals, or any suitable combination thereof. A readable signal medium may also be any readable medium other than a readable storage medium that can transmit, propagate, or transfer a program for use by or in conjunction with an instruction execution system, apparatus, or device.

[0164] The program code embodied on the readable medium may be transmitted using any appropriate medium, including but not limited to wireless, wireline, optical fiber cable, RF, etc., or any suitable combination of the foregoing.

[0165] The program code for performing the operations of the present invention may be written in any combination of one or more programming languages, including object-oriented programming languages ​​such as JAVA, C++, and the like, as well as conventional procedural programming languages ​​such as "C" or similar programming languages. The program code may be executed entirely on the user computing device, partially on the user device, as a stand-alone software package, partially on the user computing device and partially on a remote computing device, or entirely on a remote computing device or server. In the case of a remote computing device, the remote computing device may be connected to the user computing device via any type of network, including a local area network (LAN) or a wide area network (WAN), or may be connected to an external computing device (e.g., via the Internet using an Internet service provider).

[0166] It should be noted that, although several modules or units of the device for action execution are mentioned in the above detailed description, this division is not mandatory. In fact, according to the embodiment of the application, the features and functions of two or more modules or units described above can be concretized in one module or unit. On the contrary, the features and functions of one module or unit described above can be further divided into multiple modules or units to be concretized.

[0167] Furthermore, although the steps of the method of the present application are described in a particular order in the accompanying drawings, this does not require or imply that the steps must be performed in this particular order, or that all steps shown must be performed to achieve the desired results. Additionally or alternatively, some steps may be omitted, multiple steps may be combined into one step, and / or one step may be decomposed into multiple steps.

[0168] Through the description of the above embodiments, it is easy for those skilled in the art to understand that the example embodiments described herein can be implemented by software or by combining software with necessary hardware. Therefore, the technical solution according to the embodiments of the present application can be embodied in the form of a software product, which can be stored in a non-volatile storage medium (which can be a CD-ROM, a USB flash drive, a mobile hard disk, etc.) or on a network, and includes several instructions to enable a computing device (which can be a personal computer, a server, a mobile terminal, or a network device, etc.) to execute the method according to the embodiments of the present application.

[0169] Those skilled in the art will readily appreciate other embodiments of the present invention after considering the specification and practicing the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of the present invention that follow the general principles of the present invention and include common knowledge or customary techniques in the art not disclosed herein. The description and examples are to be considered merely as exemplary, and the true scope and spirit of the present application are indicated by the appended claims.

Claims

1. A method for controlling pressure relief of a high-pressure fuel tank of a hybrid vehicle, characterized in that: The hybrid vehicle uses a domain controller to centrally control network nodes corresponding to each electronic control unit, and the domain controller includes a first domain controller for detecting a refueling request, a second domain controller for performing power distribution control on each network node, and a third domain controller for controlling a fuel tank isolation valve; the method includes: In response to the detected refueling request, the first domain controller sends a refueling request; In response to the refueling request, detecting whether the vehicle currently meets the refueling conditions, and after detecting and confirming that the vehicle currently meets the refueling conditions, sending a fuel tank isolation valve power distribution request to the second domain controller, and sending a fuel tank isolation valve opening request to the third domain controller; In response to the power distribution request of the fuel tank isolation valve, the second domain controller distributes power to the fuel tank isolation valve to support normal operation of the fuel tank isolation valve; In response to the oil tank isolation valve opening request, the third domain controller controls the oil tank isolation valve to open, and relieves the pressure of the high-pressure oil tank to support refueling of the high-pressure oil tank.

2. The method according to claim 1, characterized in that The method further comprises: In response to the refueling request, if the entire vehicle is in a power-off state, the first domain controller wakes up the PNC network of some network nodes where the high-pressure fuel tank is located.

3. The method according to claim 1, characterized in that: Check whether the vehicle currently meets the refueling conditions, including: Acquiring a vehicle speed signal, and detecting a current vehicle speed of the vehicle based on the vehicle speed signal; If the vehicle speed signal is invalid, or if the current vehicle speed is lower than a preset vehicle speed threshold, it is confirmed that the vehicle currently meets the refueling conditions.

4. The method according to claim 1, characterized in that After the third domain controller controls the fuel tank isolation valve to open, the switch state of the fuel tank isolation valve and the fuel tank pressure are fed back to the engine controller, and the method further includes: If it is confirmed according to the switch state of the fuel tank isolation valve that the fuel tank isolation valve is in an open state, the engine controller starts the pressure relief timing; If, based on the time obtained by timing and the tank pressure, it is detected and confirmed that the tank pressure drops to within a preset pressure threshold within a preset time threshold, the engine controller confirms that the pressure relief is successful; If the time obtained by the timing and the oil tank pressure are detected and confirmed, the oil tank pressure is within the If the pressure does not drop to the pressure threshold within the time threshold, the engine controller confirms that the pressure relief has failed.

5. The method according to claim 4, characterized in that The engine controller is connected to a display instrument of the vehicle, and the method further includes: After confirming that the fuel tank isolation valve is in an open state, the engine controller sends corresponding pressure relief status information to the display instrument, so that the display instrument displays information describing that the pressure relief is in progress; After confirming that the pressure relief is successful, the engine controller sends corresponding pressure relief status information to the display instrument, so that the display instrument displays information describing the success of the pressure relief; After confirming that the pressure relief failure has occurred, the engine controller sends corresponding pressure relief status information to the display instrument, so that the display instrument displays information describing the pressure relief failure.

6. The method according to claim 4, characterized in that The method further comprises: After confirming that the pressure relief is successful, the engine controller sends a fuel tank cover opening request to the third domain controller; In response to the fuel tank cover opening request, the third domain controller controls opening of the fuel tank cover to support refueling of the high-pressure fuel tank.

7. The method according to claim 6, characterized in that The method further comprises: After controlling the fuel tank cap to be opened, if a fuel tank cap closing signal is detected, the third domain controller feeds back the fuel tank cap closing signal to the engine controller; In response to the fuel tank cap closing signal, the engine controller sends a fuel tank isolation valve closing request to the third domain controller, sends a power distribution cancellation request to the second domain controller, and controls the PNC network where the high-pressure fuel tank is located to enter sleep mode.

8. The method according to claim 6, characterized in that The method further comprises: If it is detected that the refueling time exceeds the preset refueling time threshold, the engine controller sends a fuel tank isolation valve closing request to the third domain controller, sends a power distribution cancellation request to the second domain controller, and controls the PNC network where the high-pressure fuel tank is located to enter sleep mode.

9. A pressure relief control device for a high pressure fuel tank of a hybrid vehicle, characterized in that: The hybrid vehicle uses a domain controller to centrally control the network nodes corresponding to each electronic control unit, and the domain controller includes a first domain controller for detecting a refueling request, a second domain controller for performing power distribution control on each network node, and a third domain controller for controlling a fuel tank isolation valve; the device includes: The refueling request detection module is configured to respond to the detected refueling request by the first domain controller to send Send refueling request; a refueling request response module, configured to respond to the refueling request, detect whether the vehicle currently meets the refueling conditions, and after detecting and confirming that the vehicle currently meets the refueling conditions, send a fuel tank isolation valve power distribution request to the second domain controller, and send a fuel tank isolation valve opening request to the third domain controller; a power distribution module, configured to respond to a power distribution request of the fuel tank isolation valve, and the second domain controller distributes power to the fuel tank isolation valve to support normal operation of the fuel tank isolation valve; The isolation valve opening module is configured to respond to the tank isolation valve opening request, and the third domain controller controls the tank isolation valve to open, to relieve the pressure of the high-pressure tank to support refueling of the high-pressure tank.

10. An electronic device, characterized in that: include: one or more processors; A storage device for storing one or more programs, when the one or more programs are executed by the one or more processors, enables the electronic device to implement the method according to any one of claims 1 to 8.

11. A computer-readable storage medium, characterized in that: Computer-readable instructions are stored thereon, and when the computer-readable instructions are executed by a processor of a computer, the computer is caused to execute the method according to any one of claims 1 to 8.

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