Power-on and power-off control method and system of fuel cell vehicle and fuel cell vehicle

Abstract

The invention provides a power-on and power-off control method and system of a fuel cell vehicle and the fuel cell vehicle, and relates to the field of fuel cell vehicle control, the method optimizes the control logic between a self-checking mode and power-on in the fuel cell vehicle, and optimizes the control logic between a vehicle locking mode and power-off at the same time, so that the fuel cell vehicle is more stable in power-on and power-off. Therefore, the problems of long power-on time and complex power-off time sequence caused by unreasonable power-on and power-off control logic of the fuel cell vehicle in the prior art are solved, and the user experience is improved.

Description

Technical Field

[0001] The present invention relates to the field of fuel cell vehicle control, and in particular to a method and system for controlling power on and off of a fuel cell vehicle, and a fuel cell vehicle. Background Art

[0002] Fuel cell vehicles have the advantages of zero pollution, short hydrogen refueling time, and long driving range, and have become an important development direction for new energy vehicles. The energy in fuel cell vehicles comes from the fuel cell system, and the electricity generated by the fuel cell system ultimately drives the vehicle. Since fuel cell vehicles are in the early stages of development, the control logic of traditional gasoline vehicles is mainly continued during the vehicle power-on and power-off control process, resulting in many incompatibility issues in fuel cell vehicles under the existing power-on and power-off control logic, such as long power-on time and complex power-off timing, which affects the user experience. Summary of the invention

[0003] In view of this, the purpose of the present invention is to provide a power-on and power-off control method, system and fuel cell vehicle for a fuel cell vehicle. By optimizing the control logic between the self-test mode and power-on in the fuel cell vehicle, and simultaneously optimizing the control logic between the vehicle locking mode and power-off, the problems of long power-on time and complex power-off sequence in fuel cell vehicles due to unreasonable power-on and power-off control logic in the prior art are solved, thereby improving the user experience.

[0004] In a first aspect, an embodiment of the present invention provides a method for controlling power on and off of a fuel cell vehicle, the method comprising:

[0005] After obtaining the vehicle unlocking instruction, the fuel cell vehicle is controlled to enter the self-test mode, and after the self-test mode is completed, the fuel cell vehicle is controlled to execute the power-on process; wherein, in the power-on process, the power battery of the fuel cell vehicle is controlled to be charged according to the first parameter;

[0006] After the vehicle start command is obtained, the power battery of the fuel cell vehicle is controlled to drive the fuel cell vehicle to travel according to the second parameter;

[0007] After the vehicle locking instruction is obtained, the fuel cell vehicle is controlled to enter the vehicle locking mode, and after the vehicle locking mode is completed, the fuel cell vehicle is controlled to perform a power-off process; wherein, in the power-off process, after the fuel cell system of the fuel cell vehicle is shut down, the power battery is controlled to complete the power-off operation according to the third parameter;

[0008] When the power battery completes the power-off operation, the vehicle controller that controls the fuel cell vehicle completes the power-off operation.

[0009] In one embodiment, after obtaining the vehicle unlocking instruction, controlling the fuel cell vehicle to enter the self-checking mode includes:

[0010] Controlling the fuel cell vehicle to monitor the vehicle unlocking command in real time; wherein the vehicle unlocking command at least includes: a door handle micro switch unlocking command, a wireless key unlocking command, and a mobile communication network unlocking command;

[0011] When a vehicle unlocking command is monitored, the body controller, vehicle controller and power battery controller of the fuel cell vehicle are controlled to execute a self-test mode; wherein the body controller, vehicle controller and power battery controller in the self-test mode respectively complete self-tests according to corresponding self-test parameters.

[0012] In one embodiment, after a vehicle unlocking command is monitored, the steps of controlling the body controller, the vehicle controller, and the power battery controller of the fuel cell vehicle to execute a self-test mode include:

[0013] When the vehicle unlocking command is monitored, the body controller is awakened and controlled to perform self-check;

[0014] If the self-test result of the body controller is normal, wake up the vehicle controller and control the vehicle controller to perform self-test;

[0015] If the self-test result of the vehicle controller is normal, wake up the power battery controller and control the power battery controller to perform self-test.

[0016] In one embodiment, after the self-test mode is completed, the fuel cell vehicle is controlled to perform a power-on process, including:

[0017] If the power battery controller completes the self-test and the self-test result is normal, control the fuel cell system in the fuel cell vehicle to enter the pre-charging mode; wherein, in the pre-charging mode, the fuel cell system controls the power battery to perform charging according to the first parameter;

[0018] When the power battery is charged according to the first parameter, the power battery controller is controlled to close the main positive relay and the main negative relay of the power battery, the fuel cell system is controlled to be in standby mode, and the vehicle start command is monitored in real time.

[0019] In one embodiment, after the vehicle start instruction is obtained, the step of controlling the power battery of the fuel cell vehicle to drive the fuel cell vehicle according to the second parameter includes:

[0020] When a vehicle start command is monitored, the fuel cell vehicle is controlled to be in a driving state according to the brake pedal command and the gear position command of the fuel cell vehicle;

[0021] Determining a driving mode of a fuel cell vehicle according to vehicle operating parameters acquired by a vehicle controller; wherein the driving modes include: a pure electric driving mode and a fuel cell driving mode;

[0022] The driving mode is used to determine a second parameter corresponding to the fuel cell vehicle, and the second parameter is used to control the power battery to drive the fuel cell vehicle to be in a driving state.

[0023] In one embodiment, after a vehicle locking instruction is obtained, controlling the fuel cell vehicle to enter a vehicle locking mode includes:

[0024] Control the fuel cell vehicle to monitor the vehicle locking command in real time; wherein the vehicle locking command at least includes: a door handle micro switch locking command, a wireless key locking command, and a mobile communication network locking command;

[0025] When a vehicle locking command is monitored, the body controller of the fuel cell vehicle enters a vehicle locking mode; wherein, in the vehicle locking mode, the body controller is used to control the fuel cell vehicle to complete vehicle locking.

[0026] In one embodiment, after the vehicle lock mode is completed, the fuel cell vehicle is controlled to execute a power-off process, including:

[0027] When the vehicle lock mode is completed, the working status of the fuel cell system is obtained;

[0028] If the fuel cell system is in the startup state, the vehicle controller is controlled to send a shutdown command to the fuel cell system;

[0029] The fuel cell system generates a third parameter after receiving the shutdown instruction, and controls the fuel cell system to perform a purge action according to the third parameter to complete the shutdown;

[0030] The third parameter is used to control the power battery controller to disconnect the main positive relay and the main negative relay of the power battery.

[0031] In one embodiment, after the power battery completes the power-off operation, the steps of controlling the vehicle controller of the fuel cell vehicle to complete the power-off operation include:

[0032] Controlling the discharge request instruction sent by the vehicle controller to the drive motor controller of the fuel cell vehicle;

[0033] After the drive motor controller executes the discharge request instruction, the vehicle controller that controls the fuel cell vehicle executes the delayed power-off strategy according to the preset time.

[0034] In a second aspect, an embodiment of the present invention further provides a power-on and power-off control system for a fuel cell vehicle, the system comprising:

[0035] A power-on process execution module, used to control the fuel cell vehicle to enter a self-test mode after obtaining a vehicle unlocking instruction, and to control the fuel cell vehicle to execute a power-on process after the self-test mode is completed; wherein, in the power-on process, the power battery of the fuel cell vehicle is controlled to be charged according to the first parameter;

[0036] A power-on process control module, used to control the power battery of the fuel cell vehicle to drive the vehicle according to the second parameter after obtaining the vehicle start command;

[0037] A power-off process execution module, used to control the fuel cell vehicle to enter a locking mode after obtaining a vehicle locking instruction, and control the fuel cell vehicle to execute a power-off process after the locking mode is completed; wherein, in the power-off process, after the fuel cell system of the fuel cell vehicle is shut down, the power battery is controlled to complete a power-off operation according to a third parameter;

[0038] The power-off process control module is used to control the vehicle controller of the fuel cell vehicle to complete the power-off operation after the power battery completes the power-off operation.

[0039] In a third aspect, an embodiment of the present invention further provides a fuel cell vehicle, which fuel cell vehicle includes at least: a control unit, a power battery, and a fuel cell system; wherein the control unit is connected to the power battery and the fuel cell system, respectively; when the control unit performs power on and off control on the fuel cell system and the power battery, the control unit executes the power on and off control method of the fuel cell vehicle mentioned in the first aspect.

[0040] In a fourth aspect, an embodiment of the present invention further provides an electronic device, including a processor and a memory, wherein the memory stores computer executable instructions that can be executed by the processor, and the processor executes the computer executable instructions to implement the power-on and power-off control method of a fuel cell vehicle mentioned in the first aspect.

[0041] In a fifth aspect, an embodiment of the present invention further provides a computer-readable storage medium, which stores computer-executable instructions. When the computer-executable instructions are called and executed by a processor, the computer-executable instructions prompt the processor to implement the power-on and power-off control method for a fuel cell vehicle mentioned in the first aspect.

[0042] The embodiment of the present invention provides a method, system and fuel cell vehicle for controlling power on and off of a fuel cell vehicle. In the process of controlling power on and off of a fuel cell vehicle, when a vehicle unlocking instruction is obtained, the fuel cell vehicle is controlled to enter a self-test mode, and after the self-test mode is completed, the fuel cell vehicle is controlled to perform a power-on process; wherein, in the power-on process, the power battery of the fuel cell vehicle is controlled to perform charging according to a first parameter; after the vehicle start instruction is obtained, the power battery of the fuel cell vehicle is controlled to drive the fuel cell vehicle to travel according to a second parameter. When the vehicle locking instruction is obtained, the fuel cell vehicle is controlled to enter a locking mode, and after the locking mode is completed, the fuel cell vehicle is controlled to perform a power-off process; wherein, in the power-off process, after the fuel cell system of the fuel cell vehicle is shut down, the power battery is controlled to complete a power-off operation according to a third parameter; and after the power battery completes the power-off operation, the vehicle controller of the fuel cell vehicle is controlled to complete a power-off operation. The method optimizes the control logic between the self-test mode and the power-on in the fuel cell vehicle, and at the same time optimizes the control logic between the locking mode and the power-off, thereby solving the problem of long power-on time and complex power-off timing of fuel cell vehicles due to unreasonable power-on and power-off control logic in the prior art, and improving the user experience.

[0043] Other features and advantages of the present invention will be described in the following description, and partly become apparent from the description, or understood by practicing the present invention. The purpose and other advantages of the present invention are realized and obtained by the structures particularly pointed out in the description, claims and drawings.

[0044] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, preferred embodiments are given below and described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0045] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0046] Figure 1 A flowchart of a method for controlling power on and off of a fuel cell vehicle provided by an embodiment of the present invention;

[0047] Figure 2 A flowchart of controlling a fuel cell vehicle to enter a self-checking mode after a vehicle unlocking instruction is obtained in a method for controlling power on and off of a fuel cell vehicle provided by an embodiment of the present invention;

[0048] Figure 3A flow chart of controlling the body controller, vehicle controller, and power battery controller of the fuel cell vehicle to execute a self-check mode after a vehicle unlocking command is monitored in a method for controlling power on and off of a fuel cell vehicle provided by an embodiment of the present invention;

[0049] Figure 4 A flowchart of a method for controlling power on and off of a fuel cell vehicle provided in an embodiment of the present invention, for controlling the fuel cell vehicle to execute a power on process after a self-check mode is completed;

[0050] Figure 5 A flow chart of a method for controlling power on and off of a fuel cell vehicle provided in an embodiment of the present invention, in which, after a vehicle start instruction is obtained, a power battery of the fuel cell vehicle is controlled to drive the fuel cell vehicle according to a second parameter;

[0051] Figure 6 A flowchart of controlling a fuel cell vehicle to enter a vehicle locking mode after a vehicle locking instruction is obtained in a method for controlling power on and off of a fuel cell vehicle provided by an embodiment of the present invention;

[0052] Figure 7 A flowchart of a method for controlling power on and off of a fuel cell vehicle provided in an embodiment of the present invention, for controlling a fuel cell vehicle to execute a power off process after a vehicle lock mode is completed;

[0053] Figure 8 A flow chart of controlling a vehicle controller of a fuel cell vehicle to complete a power-off operation after a power battery completes a power-off operation in a power-on and power-off control method of a fuel cell vehicle provided by an embodiment of the present invention;

[0054] Fig. 9 A high-voltage topology diagram of a fuel cell vehicle provided in an embodiment of the present invention;

[0055] Fig.10 A low-voltage topology diagram of a fuel cell vehicle provided in an embodiment of the present invention;

[0056] Fig.11 A vehicle power-on flow chart provided by an embodiment of the present invention;

[0057] Fig.12 A vehicle power-off flow chart provided in an embodiment of the present invention;

[0058] Fig.13 A schematic diagram of the structure of a power-on and power-off control system for a fuel cell vehicle provided by an embodiment of the present invention;

[0059] Fig.14 A schematic diagram of the structure of a fuel cell vehicle provided by an embodiment of the present invention;

[0060] Fig.15 A schematic diagram of the structure of an electronic device provided by an embodiment of the present invention.

[0061] icon:

[0062] 1310 - power-on process execution module; 1320 - power-on process control module; 1330 - power-off process execution module; 1340 - power-off process control module;

[0063] 1410-control unit; 1420-power battery; 1430-fuel cell system;

[0064] 101 - processor; 102 - memory; 103 - bus; 104 - communication interface. DETAILED DESCRIPTION

[0065] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution of the present invention will be clearly and completely described in combination with the embodiments below. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0066] Fuel cell vehicles have the advantages of zero pollution, short hydrogen refueling time, and long driving range, and have become an important development direction for new energy vehicles. The energy in fuel cell vehicles comes from the fuel cell system, and the electricity generated by the fuel cell system ultimately drives the vehicle. Since fuel cell vehicles are in the early stages of development, the control logic of traditional gasoline vehicles is mainly continued during the vehicle power-on and power-off control process, resulting in many incompatibility issues in fuel cell vehicles under the existing power-on and power-off control logic, long power-on time, complex power-off sequence, etc., which affect the user experience. Based on this, the present invention provides a power-on and power-off control method, system, and fuel cell vehicle for fuel cell vehicles. The method optimizes the control logic between the self-test mode and the power-on in the fuel cell vehicle, and at the same time optimizes the control logic between the locking mode and the power-off, thereby solving the problems of long power-on time and complex power-off sequence caused by unreasonable power-on and power-off control logic in the prior art fuel cell vehicles, and improving the user experience.

[0067] To facilitate understanding of this embodiment, firstly, a method for controlling power on and off of a fuel cell vehicle disclosed in an embodiment of the present invention is described. Figure 1 As shown, including:

[0068] Step S101, when a vehicle unlocking instruction is obtained, the fuel cell vehicle is controlled to enter a self-test mode, and after the self-test mode is completed, the fuel cell vehicle is controlled to execute a power-on process; wherein, in the power-on process, the power battery of the fuel cell vehicle is controlled to be charged according to a first parameter.

[0069] When the driver unlocks the vehicle, the vehicle is unlocked by sending the relevant vehicle unlocking command to the vehicle, and the self-test mode is executed after the vehicle is unlocked. In the self-test mode, each controller in the fuel cell vehicle is awakened respectively, and then the corresponding self-test process is executed. After the self-test mode is completed, if there is no abnormality, the power battery of the fuel cell vehicle is controlled to charge using the first parameter, which can be understood as a pre-charging process.

[0070] If the pre-charging is not performed, the pre-charging can be performed again after a corresponding time interval; when the pre-charging is completed, the fuel cell vehicle enters the standby state. In terms of actual effect, when the driver can unlock the vehicle using a variety of unlocking methods, the power battery in the fuel cell vehicle is pre-charged, thereby executing the power-on process.

[0071] Step S102, after the vehicle start instruction is obtained, the power battery of the fuel cell vehicle is controlled to drive the fuel cell vehicle to travel according to the second parameter.

[0072] When the driver starts the vehicle, the relevant control unit of the vehicle receives the vehicle start command, and the fuel cell vehicle enters the ready state. The ready state can be displayed by the corresponding indicator light on the vehicle dashboard, thereby reminding the driver to shift gears and then control the vehicle. Since fuel cell vehicles generate electricity through the fuel cell system and store the electricity in the power battery, during actual driving, the vehicle can be in the EV mode directly driven by the power battery, or the FCS (fuel cell system) mode started by the fuel cell system. The switching timing of the above modes is determined by the power demand of the vehicle and the driving parameters of the vehicle SOC, which will not be repeated here.

[0073] Step S103, after obtaining the vehicle locking command, the fuel cell vehicle is controlled to enter the vehicle locking mode, and after the vehicle locking mode is completed, the fuel cell vehicle is controlled to execute the power-off process; wherein, in the power-off process, after the fuel cell system of the fuel cell vehicle is shut down, the power battery is controlled to complete the power-off operation according to the third parameter.

[0074] The above steps are performed after the vehicle is started and driven. When the driver finishes driving and executes the vehicle lock, the relevant control unit of the vehicle receives the vehicle lock command, and the fuel cell vehicle enters the power-off state. In the actual scenario, the instrument can be controlled to power off first, and then the relevant process of locking the vehicle can be executed. After the vehicle is locked, the fuel cell system is controlled to perform the shutdown operation, and the corresponding components in the fuel cell system can be purged during this process.

[0075] Step S104, when the power battery completes the power-off operation, the vehicle controller controlling the fuel cell vehicle completes the power-off operation.

[0076] After the fuel cell system completes shutdown, it controls the power battery to execute the corresponding discharge process to complete the power-off operation; then it controls the controller contained in the fuel cell system to power off, thereby completing the power-off operation of the entire vehicle.

[0077] The execution time of the self-test mode is determined by the vehicle unlocking command, and the vehicle unlocking command includes multiple types in the fuel cell vehicle. Specifically, in one embodiment, when the vehicle unlocking command is obtained, the fuel cell vehicle is controlled to enter the self-test mode, such as Figure 2 As shown, including:

[0078] Step S201, controlling the fuel cell vehicle to monitor the vehicle unlocking instruction in real time; wherein the vehicle unlocking instruction at least includes: a door handle micro switch unlocking instruction, a wireless key unlocking instruction, and a mobile communication network unlocking instruction;

[0079] Step S202, when the vehicle unlocking command is monitored, the body controller, vehicle controller, and power battery controller of the fuel cell vehicle are controlled to execute a self-test mode; wherein the body controller, vehicle controller, and power battery controller in the self-test mode respectively complete self-tests according to corresponding self-test parameters.

[0080] The door handle micro switch is set at the vehicle door handle position, and a touch switch is set on the handle. When the driver touches this switch, the door handle micro switch unlock command is generated, and the vehicle is unlocked by judging the verification information of the vehicle sensing key. In actual scenarios, the vehicle sensing key is generally equipped with a corresponding unlock switch. When the driver presses the unlock switch, a wireless key unlock command is generated, and the verification information contained in the wireless key unlock command is used to unlock the vehicle.

[0081] Fuel cell vehicles are generally equipped with mobile communication network devices, and the driver can remotely control the vehicle through a mobile device. Therefore, the mobile network device in the vehicle can also unlock the vehicle by receiving a mobile communication network unlocking instruction transmitted from the mobile communication network.

[0082] After receiving the vehicle unlocking command, the body controller, vehicle controller, and power battery controller of the fuel cell vehicle sequentially execute the self-test mode. In one embodiment, after monitoring the vehicle unlocking command, the body controller, vehicle controller, and power battery controller of the fuel cell vehicle are controlled to execute the self-test mode step S202, such as Figure 3 As shown, including:

[0083] Step S301, when a vehicle unlocking command is monitored, the body controller is awakened and controlled to perform a self-check;

[0084] Step S302, if the self-test result of the vehicle body controller is normal, wake up the vehicle controller and control the vehicle controller to perform self-test;

[0085] Step S303: If the self-test result of the vehicle controller is normal, wake up the power battery controller and control the power battery controller to perform a self-test.

[0086] In the above process, when the vehicle receives the vehicle unlocking command, the body controller is awakened and the corresponding self-test process is executed; if the self-test result of the body controller is normal, the vehicle controller is awakened and the self-test process corresponding to awakening the vehicle controller is executed; if the self-test result of the vehicle controller is normal, the power battery controller is awakened and the power battery controller is controlled to perform self-test. In the above process, if the self-test result is abnormal, the corresponding fault code is generated and displayed in the vehicle.

[0087] After the self-check is completed, the fuel cell system needs to be used to charge the power battery. In one embodiment, after the self-check mode is completed, the fuel cell vehicle is controlled to perform a power-on process, such as Figure 4 As shown, including:

[0088] Step S401, if the power battery controller completes the self-test and the self-test result is normal, control the fuel cell system in the fuel cell vehicle to enter a pre-charging mode; wherein, in the pre-charging mode, the fuel cell system controls the power battery to perform charging according to the first parameter;

[0089] Step S402, when the power battery is charged according to the first parameter, the power battery controller is controlled to close the main positive relay and the main negative relay of the power battery, the fuel cell system is controlled to be in standby mode, and the vehicle start command is monitored in real time.

[0090] After the power battery controller completes the self-check, it starts to control the power battery to perform charging, and controls the fuel cell system to enter the pre-charging mode so that the power battery performs the charging process according to the first parameter. The main positive relay and the main negative relay of the power battery are respectively set at the positive and negative poles of the power battery. After the pre-charging is completed, the main positive relay and the main negative relay are closed, and the fuel cell system is controlled to be in standby mode. At this time, the fuel cell vehicle enters the standby state.

[0091] In one embodiment, after the vehicle start command is obtained, the step S102 of controlling the power battery of the fuel cell vehicle to drive the fuel cell vehicle according to the second parameter is as follows: Figure 5 As shown, including:

[0092] Step S501, when a vehicle start command is monitored, the fuel cell vehicle is controlled to be in a driving state according to a brake pedal command and a gear position command of the fuel cell vehicle;

[0093] Step S502, determining a driving mode of the fuel cell vehicle according to the vehicle operating parameters acquired by the vehicle controller; wherein the driving modes include: a pure electric driving mode and a fuel cell driving mode;

[0094] Step S503, using the driving mode to determine a second parameter corresponding to the fuel cell vehicle, and using the second parameter to control the power battery to drive the fuel cell vehicle to be in a driving state.

[0095] After the driver starts the vehicle, the fuel cell vehicle enters the ready state, and the vehicle instrument battery ready indicator light reminds the driver to shift gears. When the driver steps on the brake pedal and sets the corresponding gear, the fuel cell vehicle is controlled to the corresponding driving state according to the brake pedal command and gear command of the fuel cell vehicle.

[0096] During the driving process of the fuel cell vehicle, the driving mode of the fuel cell vehicle is determined according to the vehicle operating parameters and power requirements obtained by the vehicle controller. The driving modes include: EV mode of pure electric drive and FCS mode of fuel cell drive. After the driving mode is determined, the second parameter required for the fuel cell vehicle to drive is obtained, and the second parameter is used to control the power battery to drive the fuel cell vehicle in a driving state.

[0097] In one embodiment, after the vehicle locking instruction is obtained, the fuel cell vehicle is controlled to enter the vehicle locking mode, such as Figure 6 As shown, including:

[0098] Step S601, controlling the fuel cell vehicle to monitor the vehicle locking command in real time; wherein the vehicle locking command at least includes: a door handle micro switch locking command, a wireless key locking command, and a mobile communication network locking command;

[0099] Step S602, when a vehicle locking command is monitored, the body controller of the fuel cell vehicle is controlled to enter a vehicle locking mode; wherein, in the vehicle locking mode, the body controller is used to control the fuel cell vehicle to complete vehicle locking.

[0100] When the driving is finished, the driver turns off the vehicle and locks it. When the relevant control unit of the vehicle receives the vehicle locking command, it indicates that the fuel cell vehicle enters the power-off state. The types of locking commands and unlocking commands correspond to each other, including: door handle micro switch locking command, wireless key locking command, mobile communication network locking command, which are respectively derived from the micro switch at the vehicle door handle position, the locking switch of the vehicle induction key, and the locking command issued by the mobile device.

[0101] After the vehicle lock mode is completed, the fuel cell vehicle is powered off according to the working state of the fuel cell system. In one embodiment, after the vehicle lock mode is completed, the fuel cell vehicle is controlled to perform the power-off process, such as Figure 7 As shown, including:

[0102] Step S701, when the vehicle locking mode is completed, obtaining the working state of the fuel cell system;

[0103] Step S702, if the fuel cell system is in the startup state, control the vehicle controller to send a shutdown command to the fuel cell system;

[0104] Step S703, the fuel cell system generates a third parameter after receiving the shutdown instruction, and controls the fuel cell system to perform a purge action according to the third parameter to complete the shutdown;

[0105] Step S704: Use the third parameter to control the power battery controller to disconnect the main positive relay and the main negative relay of the power battery.

[0106] Specifically, if the fuel cell system is in the startup state, the vehicle controller sends a shutdown command to the fuel cell system; when the fuel cell system executes the shutdown command, it generates a third parameter according to the state parameter of the fuel cell system, and uses the third parameter to perform the corresponding power-off purge action. After the shutdown command response is completed, the fuel cell system shuts down, and the vehicle controller sends the third parameter to the power battery controller, so that the power battery controller disconnects the main positive relay and the main negative relay of the power battery.

[0107] In one embodiment, after the power battery completes the power-off operation, the vehicle controller controlling the fuel cell vehicle completes the power-off operation step S104. Figure 8 As shown, including:

[0108] Step S801, controlling the vehicle controller to send a discharge request instruction to the drive motor controller of the fuel cell vehicle;

[0109] Step S802 , after the driving motor controller executes the discharge request instruction, the vehicle controller of the fuel cell vehicle is controlled to execute the delayed power-off strategy according to the preset time.

[0110] Specifically, when the power battery controller completes the disconnect relay operation, the vehicle controller sends a power generation request instruction to the drive motor controller; after the drive motor controller completes the execution of the discharge request instruction, it can execute the power-off process for other controllers in the fuel cell vehicle. When other controllers complete the power-off, the vehicle controller executes the delayed power-off strategy, and the vehicle controller completes the power-off operation after executing the delayed power-off strategy according to the preset time.

[0111] In order to describe the power-on and power-off control process in more detail, the structure of the fuel cell vehicle is first described. Fig. 9 The high voltage topology diagram of the fuel cell vehicle shown in the figure and Fig.10 The low-voltage topology diagram of the fuel cell vehicle is shown in Figure 2. Fig.11 The power-on process flow chart of a whole vehicle is shown in FIG. 1 , and the specific power-on process flow is as follows:

[0112] First, when the driver touches the door handle micro switch or unlocks the car with the key or other means of unlocking, the BCM body controller is awakened and completes the self-test; then the VCU vehicle controller is awakened and completes the self-test; after the VCU vehicle controller completes the self-test, the power-on process is started, and then each controller is awakened and completes the self-test. After all the above self-test processes are successful, the BMS power battery starts pre-charging. After the BMS power battery is pre-charged, the main positive relay and the main negative relay are closed, and the FCU fuel cell engine controller enters the standby state; if the pre-charge is not performed, it can be re-executed after 3 minutes. In the above process, if there is a problem with the self-test, the corresponding fault information is generated and reported.

[0113] When the driver starts the one-button switch, the instrument lights up and the ready light turns on at the same time. The driver controls the vehicle to drive after stepping on the brake and shifting gears. During driving, when the driver requests the fuel cell system to start the command, or the VCU vehicle controller generates a fuel cell system start command based on the vehicle SOC and power requirements, it determines whether the vehicle is running in pure electric drive mode or fuel cell drive mode.

[0114] like Fig.12 The specific process of a vehicle power-off process is as follows:

[0115] When the driver turns off the vehicle through the one-touch start switch, the vehicle instrument is powered off; then the driver touches the door handle micro switch or uses the car key to lock or other means to lock the car to generate an unlock command, and the BCM body controller responds to the command and performs the locking operation. In actual scenarios, there may be a situation where the driver forgets to lock the car. At this time, it is determined within 30 minutes whether there is a locking action and whether there is someone in the car. If yes, it means that there is someone in the car, and no operation is performed; if not, it means that the driver forgot to lock the car, and the subsequent power-off process is performed.

[0116] The VCU vehicle controller determines the start / stop status of the FCS fuel cell system. If the FCS fuel cell system is in the on state, the VCU vehicle controller sends a command to shut down the fuel cell system. At this time, the stack of the FCS fuel cell system starts to be purged. After the purge is completed, the FCS fuel cell system is powered off and shut down.

[0117] Then the VCU vehicle controller sends the BMS power battery to disconnect the main positive relay and the main negative relay. After the BMS power battery disconnects the main positive relay and the main negative relay, the VCU vehicle controller sends an active discharge instruction to the PEU drive motor controller; the PEU drive motor controller performs active discharge according to the active discharge instruction. After the discharge is completed, each controller is powered off normally, and then the VCU vehicle controller delays powering off to complete the power-off process.

[0118] If the FCS fuel cell system is in the shutdown state, the fuel cell engine does not need to perform the purge strategy, and the power-off process is directly executed. The VCU vehicle controller sends the BMS power battery to disconnect the main positive relay and the main negative relay. After the BMS power battery disconnects the main positive relay and the main negative relay, the VCU vehicle controller sends an active discharge instruction to the PEU drive motor controller; the PEU drive motor controller performs active discharge according to the active discharge instruction. After the discharge is completed, each controller is powered off normally, and then the VCU vehicle controller delays the power-off to complete the power-off process.

[0119] After the vehicle is powered off, the vehicle can also be controlled to enter the battery intelligent charging detection mode to replenish the battery.

[0120] It can be seen from the power-on and power-off control method of the fuel cell vehicle in the above embodiment that the method optimizes the control logic between the self-test mode and the power-on in the fuel cell vehicle, and at the same time optimizes the control logic between the vehicle lock mode and the power-off, thereby solving the problems of long power-on time and complex power-off timing of fuel cell vehicles in the prior art due to unreasonable power-on and power-off control logic, and improving the user experience.

[0121] Corresponding to the above method embodiment, the present invention provides a power-on and power-off control system for a fuel cell vehicle, such as Fig.13 As shown, the system includes:

[0122] The power-on process execution module 1310 is used to control the fuel cell vehicle to enter the self-test mode after obtaining the vehicle unlocking instruction, and control the fuel cell vehicle to execute the power-on process after the self-test mode is completed; wherein, in the power-on process, the power battery of the fuel cell vehicle is controlled to be charged according to the first parameter;

[0123] The power-on process control module 1320 is used to control the power battery of the fuel cell vehicle to drive the vehicle according to the second parameter after obtaining the vehicle start instruction;

[0124] The power-off process execution module 1330 is used to control the fuel cell vehicle to enter the vehicle locking mode after obtaining the vehicle locking instruction, and control the fuel cell vehicle to execute the power-off process after the vehicle locking mode is completed; wherein, in the power-off process, after the fuel cell system of the fuel cell vehicle is shut down, the power battery is controlled to complete the power-off operation according to the third parameter;

[0125] The power-off process control module 1340 is used to control the vehicle controller of the fuel cell vehicle to complete the power-off operation after the power battery completes the power-off operation.

[0126] In one embodiment, the power-on process execution module 1310 is further used to:

[0127] Control the fuel cell vehicle to monitor the vehicle unlocking command in real time; wherein the vehicle unlocking command includes at least: a door handle micro switch unlocking command, a wireless key unlocking command, and a mobile communication network unlocking command; when the vehicle unlocking command is monitored, control the body controller, the whole vehicle controller, and the power battery controller of the fuel cell vehicle to execute a self-test mode; wherein the body controller, the whole vehicle controller, and the power battery controller in the self-test mode respectively complete self-tests according to corresponding self-test parameters.

[0128] In one embodiment, after monitoring the vehicle unlocking command, the power-on process execution module 1310 controls the body controller, the vehicle controller, and the power battery controller of the fuel cell vehicle to execute the self-test mode, and is also used to:

[0129] When the vehicle unlocking command is monitored, the body controller is woken up and controlled to perform self-test; if the self-test result of the body controller is normal, the vehicle controller is woken up and controlled to perform self-test; if the self-test result of the body controller is normal, the power battery controller is woken up and controlled to perform self-test.

[0130] In one embodiment, the power-on process execution module 1310 is further used to control the fuel cell vehicle to execute the power-on process after the self-test mode is completed:

[0131] If the power battery controller completes the self-test and the self-test result is normal, the fuel cell system in the fuel cell vehicle is controlled to enter the pre-charging mode; wherein, in the pre-charging mode, the fuel cell system controls the power battery to perform charging according to the first parameter; when the power battery completes the charging according to the first parameter, the power battery controller is controlled to close the main positive relay and the main negative relay of the power battery, controls the fuel cell system to be in the standby mode, and monitors the vehicle start-up command in real time.

[0132] In one implementation, the power-on process control module 1320 is further configured to:

[0133] When a vehicle start command is monitored, the fuel cell vehicle is controlled to be in a driving state according to the brake pedal command and gear command of the fuel cell vehicle; the driving mode of the fuel cell vehicle is determined according to the vehicle operating parameters obtained by the vehicle controller; wherein the driving modes include: a pure electric driving mode and a fuel cell driving mode; the driving mode is used to determine a second parameter corresponding to the fuel cell vehicle, and the second parameter is used to control the power battery to drive the fuel cell vehicle to be in a driving state.

[0134] In one embodiment, the power-off process execution module 1330 is further used to:

[0135] Control the fuel cell vehicle to monitor the vehicle locking command in real time; wherein the vehicle locking command includes at least: a door handle micro switch locking command, a wireless key locking command, and a mobile communication network locking command; when the vehicle locking command is monitored, control the body controller of the fuel cell vehicle to enter a vehicle locking mode; wherein, in the vehicle locking mode, the body controller is used to control the fuel cell vehicle to complete the vehicle locking.

[0136] In one embodiment, the power-off process execution module 1330 is further used to control the fuel cell vehicle to execute the power-off process after the vehicle lock mode is completed:

[0137] When the vehicle locking mode is completed, the working status of the fuel cell system is obtained; if the fuel cell system is in the startup state, the vehicle controller is controlled to send a shutdown command to the fuel cell system; the fuel cell system generates a third parameter after receiving the shutdown command, and controls the fuel cell system to perform a purge action according to the third parameter to complete the shutdown; the third parameter is used to control the power battery controller to disconnect the main positive relay and the main negative relay of the power battery.

[0138] In one implementation, the power-off process control module 1340 is further configured to:

[0139] The vehicle controller controls the discharge request instruction sent to the drive motor controller of the fuel cell vehicle; after the drive motor controller executes the discharge request instruction, the vehicle controller of the fuel cell vehicle is controlled to execute the delayed power-off strategy according to the preset time.

[0140] The power-on and power-off control system for a fuel cell vehicle provided in an embodiment of the present invention has the same implementation principle and technical effects as those of the power-on and power-off control method embodiment of the aforementioned fuel cell vehicle. For the sake of brief description, for matters not mentioned in the device embodiment, reference may be made to the corresponding contents in the aforementioned embodiment.

[0141] An embodiment of the present invention provides a fuel cell vehicle, such as Fig.14 As shown, the fuel cell vehicle at least includes: a control unit 1410, a power battery 1420, and a fuel cell system 1430; wherein the control unit 1410 is connected to the power battery 1420 and the fuel cell system 1430, respectively; when the control unit 1410 performs power on and off control on the fuel cell system 1430 and the power battery 1420, it executes the power on and off control method of the fuel cell vehicle mentioned in the above embodiment.

[0142] This embodiment also provides an electronic device. The structural diagram of the electronic device is as follows: Fig.15 As shown, the device includes a processor 101 and a memory 102; wherein the memory 102 is used to store one or more computer instructions, and the one or more computer instructions are executed by the processor to implement the above-mentioned fuel cell vehicle power-on and power-off control method.

[0143] Fig.15 The electronic device shown further includes a bus 103 and a communication interface 104 , and the processor 101 , the communication interface 104 and the memory 102 are connected via the bus 103 .

[0144] The memory 102 may include a high-speed random access memory (RAM), and may also include a non-volatile memory, such as at least one disk storage. The bus 103 may be an ISA bus, a PCI bus, or an EISA bus. The bus may be divided into an address bus, a data bus, a control bus, etc. For ease of representation, Fig.15 Only one bidirectional arrow is used in the diagram, but this does not mean that there is only one bus or only one type of bus.

[0145] The communication interface 104 is used to connect to at least one user terminal and other network units through a network interface, and send the encapsulated IPv4 message or IPv4 message to the user terminal through the network interface.

[0146] The processor 101 may be an integrated circuit chip with signal processing capabilities. In the implementation process, each step of the above method can be completed by the hardware integrated logic circuit or software instructions in the processor 101. The above processor 101 can be a general-purpose processor, including a central processing unit (CPU), a network processor (NP), etc.; it can also be a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a field-programmable gate array (FPGA) or other programmable logic devices, discrete gates or transistor logic devices, discrete hardware components. The disclosed methods, steps and logic block diagrams in the embodiments of the present disclosure can be implemented or executed. The general-purpose processor can be a microprocessor or the processor can also be any conventional processor, etc. The steps of the method disclosed in conjunction with the embodiments of the present disclosure can be directly embodied as a hardware decoding processor for execution, or a combination of hardware and software modules in the decoding processor for execution. The software module may be located in a storage medium mature in the art, such as a random access memory, a flash memory, a read-only memory, a programmable read-only memory, or an electrically erasable programmable memory, a register, etc. The storage medium is located in the memory 102, and the processor 101 reads the information in the memory 102 and completes the steps of the method of the above embodiment in combination with its hardware.

[0147] An embodiment of the present invention further provides a computer-readable storage medium, on which a computer program is stored. When the computer program is executed by a processor, the steps of the method of the above embodiment are executed.

[0148] In the several embodiments provided in the present application, it should be understood that the disclosed systems, devices and methods can be implemented in other ways. The device embodiments described above are merely schematic. For example, the division of the units is only a logical function division. There may be other division methods in actual implementation. For example, multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some communication interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms.

[0149] The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0150] In addition, each functional unit in each embodiment of the present invention may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.

[0151] If the functions are implemented in the form of software functional units and sold or used as independent products, they can be stored in a non-volatile computer-readable storage medium that is executable by a processor. Based on this understanding, the technical solution of the present invention can essentially or in other words, the part that contributes to the prior art or the part of the technical solution can be embodied in the form of a software product. The computer software product is stored in a storage medium and includes several instructions for enabling a computer device (which can be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the methods described in each embodiment of the present invention. The aforementioned storage medium includes: various media that can store program codes, such as a USB flash drive, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk.

[0152] Finally, it should be noted that the above-described embodiments are only specific implementations of the present invention, which are used to illustrate the technical solutions of the present invention, rather than to limit them. The protection scope of the present invention is not limited thereto. Although the present invention is described in detail with reference to the above-mentioned embodiments, ordinary technicians in the field should understand that any technician familiar with the technical field can still modify the technical solutions recorded in the above-mentioned embodiments within the technical scope disclosed by the present invention, or can easily think of changes, or make equivalent replacements for some of the technical features therein; and these modifications, changes or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention, and should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention shall be based on the protection scope of the claims.

Claims

1. A method for controlling power on and off of a fuel cell vehicle, characterized in that: The method comprises: After obtaining the vehicle unlocking instruction, the fuel cell vehicle is controlled to enter a self-test mode, and after the self-test mode is completed, the fuel cell vehicle is controlled to perform a power-on process; wherein, in the power-on process, the power battery of the fuel cell vehicle is controlled to be charged according to a first parameter; After the vehicle start instruction is obtained, the power battery of the fuel cell vehicle is controlled to drive the fuel cell vehicle to travel according to the second parameter; After the vehicle locking instruction is obtained, the fuel cell vehicle is controlled to enter a locking mode, and after the locking mode is completed, the fuel cell vehicle is controlled to perform a power-off process; wherein, in the power-off process, after the fuel cell system of the fuel cell vehicle is shut down, the power battery is controlled to complete a power-off operation according to a third parameter; When the power battery completes the power-off operation, the vehicle controller controlling the fuel cell vehicle completes the power-off operation.

2. The method for controlling power on and off of a fuel cell vehicle according to claim 1, characterized in that: The step of controlling the fuel cell vehicle to enter a self-checking mode after obtaining the vehicle unlocking instruction comprises: Controlling the fuel cell vehicle to monitor the vehicle unlocking instruction in real time; wherein the vehicle unlocking instruction at least includes: a door handle micro switch unlocking instruction, a wireless key unlocking instruction, and a mobile communication network unlocking instruction; When the vehicle unlocking command is monitored, the body controller, the whole vehicle controller, and the power battery controller of the fuel cell vehicle are controlled to execute the self-test mode; wherein, the body controller, the whole vehicle controller, and the power battery controller in the self-test mode respectively complete self-test according to corresponding self-test parameters.

3. The method for controlling power on and off of a fuel cell vehicle according to claim 2, characterized in that: The step of controlling the body controller, the vehicle controller, and the power battery controller of the fuel cell vehicle to execute the self-test mode after the vehicle unlocking command is monitored includes: When the vehicle unlocking command is monitored, waking up the body controller and controlling the body controller to perform a self-check; If the self-test result of the body controller is normal, waking up the vehicle controller and controlling the vehicle controller to perform a self-test; If the self-test result of the vehicle controller is normal, wake up the power battery controller and control the power battery controller to perform a self-test.

4. The method for controlling power on and off of a fuel cell vehicle according to claim 3, characterized in that: The process of controlling the fuel cell vehicle to perform a power-on process after the self-check mode is completed includes: If the power battery controller completes the self-test and the self-test result is normal, control the fuel cell system in the fuel cell vehicle to enter a pre-charging mode; wherein, in the pre-charging mode, the fuel cell system controls the power battery to perform charging according to the first parameter; When the power battery is charged according to the first parameter, the power battery controller is controlled to close the main positive relay and the main negative relay of the power battery, the fuel cell system is controlled to be in standby mode, and the vehicle start command is monitored in real time.

5. The method for controlling power on and off of a fuel cell vehicle according to claim 4, characterized in that: The step of controlling the power battery of the fuel cell vehicle to drive the fuel cell vehicle according to the second parameter after the vehicle start instruction is obtained includes: When the vehicle start command is monitored, the fuel cell vehicle is controlled to be in a driving state according to the brake pedal command and the gear position command of the fuel cell vehicle; Determining the driving mode of the fuel cell vehicle according to the vehicle operating parameters acquired by the vehicle controller; wherein the driving mode includes: a pure electric driving mode and a fuel cell driving mode; The driving mode is used to determine a second parameter corresponding to the fuel cell vehicle, and the second parameter is used to control the power battery to drive the fuel cell vehicle in a driving state.

6. The method for controlling power on and off of a fuel cell vehicle according to claim 1, characterized in that: The step of controlling the fuel cell vehicle to enter a vehicle locking mode after obtaining a vehicle locking instruction comprises: Controlling the fuel cell vehicle to monitor the vehicle locking instruction in real time; wherein the vehicle locking instruction at least includes: a door handle micro switch locking instruction, a wireless key locking instruction, and a mobile communication network locking instruction; When the vehicle locking command is monitored, the body controller of the fuel cell vehicle is controlled to enter the vehicle locking mode; wherein, in the vehicle locking mode, the body controller is used to control the fuel cell vehicle to complete the vehicle locking.

7. The method for controlling power on and off of a fuel cell vehicle according to claim 1, characterized in that: The process of controlling the fuel cell vehicle to execute power-off after the vehicle lock mode is completed includes: When the vehicle locking mode is completed, obtaining the working state of the fuel cell system; If the fuel cell system is in a startup state, controlling the vehicle controller to send a shutdown command to the fuel cell system; The fuel cell system generates the third parameter after receiving the shutdown instruction, and controls the fuel cell system to perform a purge action and then complete shutdown according to the third parameter; The third parameter is used to control the power battery controller to disconnect the main positive relay and the main negative relay of the power battery.

8. The method for controlling power on and off of a fuel cell vehicle according to claim 1, characterized in that: The step of controlling the vehicle controller of the fuel cell vehicle to complete the power-off operation after the power battery completes the power-off operation comprises: Controlling the vehicle controller to send a discharge request instruction to the drive motor controller of the fuel cell vehicle; After the driving motor controller executes the discharge request instruction, the vehicle controller of the fuel cell vehicle is controlled to execute a delayed power-off strategy according to a preset time.

9. A power-on and power-off control system for a fuel cell vehicle, characterized in that: The system comprises: A power-on process execution module, used to control the fuel cell vehicle to enter a self-test mode after obtaining a vehicle unlocking instruction, and control the fuel cell vehicle to execute a power-on process after the self-test mode is completed; wherein, in the power-on process, the power battery of the fuel cell vehicle is controlled to be charged according to a first parameter; A power-on process control module, configured to control the power battery of the fuel cell vehicle to drive the vehicle according to a second parameter after obtaining a vehicle start instruction; A power-off process execution module, used to control the fuel cell vehicle to enter a vehicle locking mode after obtaining a vehicle locking instruction, and control the fuel cell vehicle to execute a power-off process after the vehicle locking mode is completed; wherein, in the power-off process, after the fuel cell system of the fuel cell vehicle is shut down, the power battery is controlled to complete a power-off operation according to a third parameter; The power-off process control module is used to control the vehicle controller of the fuel cell vehicle to complete the power-off operation after the power battery completes the power-off operation.

10. A fuel cell vehicle, characterized in that: The fuel cell vehicle comprises at least: a control unit, a power battery, and a fuel cell system; wherein the control unit is connected to the power battery and the fuel cell system, respectively; when the control unit performs power on and off control on the fuel cell system and the power battery, the control unit executes the power on and off control method for a fuel cell vehicle as described in any one of claims 1 to 8.

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