A method, device, equipment and storage medium for cold starting of hydrogen fuel vehicle

Abstract

The present invention discloses a method, device, equipment and storage medium for low-temperature cold start of hydrogen fuel vehicles, the method comprising the steps of: judging whether the vehicle needs a remote low-temperature cold start according to a remote low-temperature cold start instruction received by a T-BOX terminal; when it is determined that a remote low-temperature cold start is required, heating the power battery, and monitoring the sustainable charging power of the power battery in real time to determine whether the conditions for starting the fuel cell are met; when the conditions are met, turning on the fuel cell and obtaining the stable output power of the fuel cell; determining whether the remote low-temperature cold start is completed according to the temperature of the power battery, the charge state of the power battery and the stable output power of the fuel cell, and prompting the current remote cold start status of the vehicle. The present application can effectively reduce the waiting time of hydrogen fuel vehicles at low-temperature cold start, and at the same time realize remote preheating of the vehicle to improve the vehicle experience.

Description

Technical Field

[0001] The present invention relates to the technical field of automobile fuel cells, and in particular to a low-temperature cold start method, device, equipment and storage medium for a hydrogen fuel vehicle. Background Art

[0002] With the development of the automobile industry, the number of fuel cell vehicles has continued to increase. Domestic hydrogen fuel cell vehicles are limited by product performance issues. Currently, fuel cell vehicles with power batteries as auxiliary energy sources are used to make up for the problem of slow fuel cell power response. However, low temperatures will reduce the activity of lithium-ion batteries, slow down the reaction speed, and greatly affect the charging and discharging performance, especially the charging performance. As a result, hydrogen fuel cell vehicles take a long time to start up under low temperature conditions.

[0003] Therefore, how to remotely cold-start a vehicle in a low-temperature environment is a technical problem that urgently needs to be solved. Summary of the invention

[0004] The main purpose of the present invention is to provide a low-temperature cold start method, device, equipment and storage medium for hydrogen fuel vehicles, which can effectively reduce the waiting time for low-temperature cold start of hydrogen fuel vehicles, and at the same time realize remote preheating of the vehicle to improve the vehicle experience.

[0005] In a first aspect, the present application provides a low-temperature cold start method for a hydrogen fuel vehicle, the method comprising the steps of:

[0006] According to the remote low-temperature cold start command received by the T-BOX terminal, determine whether the vehicle needs a remote low-temperature cold start;

[0007] When it is determined that a remote low-temperature cold start is required, the power battery is heated, and the sustainable charging power of the power battery is monitored in real time to determine whether the conditions for starting the fuel cell are met;

[0008] When the conditions are met, the fuel cell is turned on and a stable output power of the fuel cell is obtained;

[0009] Based on the temperature of the power battery, the charge state of the power battery and the stable output power of the fuel cell, determine whether the remote low-temperature cold start is completed, and prompt the current vehicle remote cold start status.

[0010] In combination with the first aspect above, as an optional implementation, the vehicle BMS obtains the sustainable charging power of the power battery by monitoring the minimum temperature of the power battery and the charge state of the power battery;

[0011] When the sustainable charging power of the power battery is greater than or equal to the actual charging power of the power battery, determining that the power battery meets the condition for starting the fuel cell;

[0012] When the sustainable charging power of the power battery is less than the actual charging power of the power battery, it is determined that the power battery does not meet the condition for starting the fuel cell.

[0013] In combination with the first aspect above, as an optional implementation method, the required power of the whole vehicle is obtained, and the response output power of the fuel cell is determined according to the required power of the whole vehicle;

[0014] According to the formula (Pa-Pb) / Pb<±0.03, the stable output power of the fuel cell is calculated, wherein Pa is the response output power of the fuel cell and Pb is the required power of the whole vehicle.

[0015] In combination with the first aspect above, as an optional implementation method, within a preset time range, when the stable output power of the fuel cell is greater than the set time, the minimum temperature of the power battery is greater than or equal to the set temperature, and the power of the power battery is greater than or equal to the set value, it is determined that the vehicle's remote low-temperature cold start is completed.

[0016] In combination with the first aspect above, as an optional implementation, the lowest temperature of the power battery is collected using a temperature sensor;

[0017] Determine the charge state of the power battery according to the voltage sensor and the current sensor;

[0018] When it is detected that the lowest temperature of the power battery is less than or equal to the set temperature, and the power battery power is greater than or equal to the set value, it is determined that the vehicle needs to be remotely cold started at low temperature;

[0019] When it is detected that the lowest temperature of the power battery is greater than the set temperature or the power battery power is less than the set value, it is determined that the vehicle does not need to be remotely cold started at low temperature.

[0020] In combination with the first aspect above, as an optional implementation method, the low-temperature cold start time of the vehicle is determined according to the minimum temperature of the power battery, the current charge state of the power battery, the current temperature of the fuel cell stack, the ambient temperature, the net output power of the fuel cell at idle, the power battery heating power, the fuel cell heating power, the power battery heating rate at different ambient temperatures, and the fuel cell idle cold start time at different ambient temperatures.

[0021] In combination with the first aspect above, as an optional implementation, the power battery is heated by closing the positive high-voltage contactor of the heating circuit and the negative high-voltage contactor of the heating circuit.

[0022] In a second aspect, the present application provides a low-temperature cold starting device for a hydrogen fuel vehicle, the device comprising:

[0023] A judgment module, which is used to judge whether the vehicle needs a remote low-temperature cold start according to the remote low-temperature cold start instruction received by the T-BOX terminal;

[0024] A monitoring module, which is used to heat the power battery when it is determined that a remote low-temperature cold start is required, and to monitor the sustainable charging power of the power battery in real time to determine whether the conditions for starting the fuel cell are met;

[0025] An acquisition module, which is used to start the fuel cell and acquire the stable output power of the fuel cell when a condition is met;

[0026] The determination module is used to determine whether the remote low-temperature cold start is completed according to the temperature of the power battery, the charge state of the power battery and the stable output power of the fuel cell, and prompt the current remote cold start state of the vehicle.

[0027] In a third aspect, the present application further provides an electronic device, comprising: a processor; a memory, wherein the memory stores computer-readable instructions, and when the computer-readable instructions are executed by the processor, the method described in any one of the first aspects is implemented.

[0028] In a fourth aspect, the present application further provides a computer-readable storage medium storing computer program instructions, which, when executed by a computer, enables the computer to execute any of the methods described in the first aspect.

[0029] The present application provides a method, device, equipment and storage medium for low-temperature cold start of hydrogen fuel vehicles. According to the remote low-temperature cold start command received by the T-BOX terminal, it is determined whether the vehicle needs a remote low-temperature cold start; when it is determined that a remote low-temperature cold start is required, the power battery is heated, and the sustainable charging power of the power battery is monitored in real time to determine whether the conditions for starting the fuel cell are met; when the conditions are met, the fuel cell is turned on and the stable output power of the fuel cell is obtained; according to the temperature of the power battery, the charge state of the power battery and the stable output power of the fuel cell, it is determined whether the remote low-temperature cold start is completed, and the current vehicle remote cold start status is prompted. It can effectively reduce the waiting time of hydrogen fuel vehicles at low temperature cold start, and at the same time realize remote preheating of the vehicle to improve the vehicle experience.

[0030] It is to be understood that the foregoing general description and the following detailed description are exemplary only and are not restrictive of the invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and, together with the description, serve to explain the principles of the invention.

[0032] Figure 1 A flow chart of a low-temperature cold start method for a hydrogen fuel vehicle provided in an embodiment of the present application;

[0033] Figure 2 A schematic diagram of a low-temperature cold start device for a hydrogen fuel vehicle provided in an embodiment of the present application;

[0034] Figure 3 A schematic diagram of an electronic device provided in an embodiment of the present application;

[0035] Figure 4 A schematic diagram of a computer-readable program medium provided in an embodiment of the present application. DETAILED DESCRIPTION

[0036] Here, exemplary embodiments will be described in detail, examples of which are shown in the accompanying drawings. When the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present invention. Instead, they are merely examples of devices and methods consistent with some aspects of the present invention as detailed in the appended claims.

[0037] Furthermore, the drawings are only schematic illustrations of the present disclosure and are not necessarily drawn to scale. Some of the blocks shown in the drawings are functional entities and do not necessarily correspond to physically or logically separate entities.

[0038] The embodiments of the present application provide a low-temperature cold start method, device, equipment and storage medium for a hydrogen fuel vehicle, which solves the problem that the preheating function of existing hydrogen fuel vehicle models is complex in structure and cannot be remotely controlled; based on the existing hardware architecture of the whole vehicle, a simple and feasible control is adopted, with a small amount of modification while realizing the remote preheating function, which effectively solves the technical problem of the need to idle for a long time when the vehicle is just started at low temperatures in northern regions.

[0039] In order to achieve the above technical effects, the general idea of ​​this application is as follows:

[0040] A low-temperature cold start method for a hydrogen fuel vehicle, the method comprising the steps of:

[0041] S101: judging whether the vehicle needs a remote low-temperature cold start according to the remote low-temperature cold start instruction received by the T-BOX terminal.

[0042] S102: When it is determined that a remote low-temperature cold start is required, the power battery is heated, and the sustainable charging power of the power battery is monitored in real time to determine whether the conditions for starting the fuel cell are met.

[0043] S103: When the conditions are met, the fuel cell is turned on and a stable output power of the fuel cell is obtained.

[0044] S104: Determine whether the remote low-temperature cold start is completed based on the temperature of the power battery, the charge state of the power battery, and the stable output power of the fuel cell, and prompt the current remote cold start state of the vehicle.

[0045] The embodiments of the present application are further described in detail below in conjunction with the accompanying drawings.

[0046] Reference Figure 1 , Figure 1 FIG. 1 is a flow chart of a low-temperature cold start method for a hydrogen fuel vehicle provided by the present invention. Figure 1 As shown, the method comprises the steps of:

[0047] Step S101: judging whether the vehicle needs a remote low-temperature cold start according to the remote low-temperature cold start instruction received by the T-BOX terminal.

[0048] Specifically, log in to the mobile phone APP or the vehicle intelligent network platform, and send a remote low-temperature cold start command to the hydrogen fuel cell vehicle T-BOX terminal through the wireless communication module. After receiving the remote low-temperature cold start command, the T-BOX terminal wakes up the vehicle controller VCU through a hard line and sends a remote low-temperature cold start command: wake up the BMS, fuel cell system controller FCU, on-board hydrogen system controller, five-in-one controller, and high-voltage DCDC controller in turn, and after self-checking without faults, the vehicle controller VCU determines whether there is a need for a low-temperature cold start. The specific judgment process is: according to the temperature sensor, the lowest temperature of the power battery is collected, and according to the voltage sensor and the current sensor, the power of the power battery is obtained by the open circuit voltage and the ampere-hour integration method. When the lowest temperature of the power battery Tmin≤0℃ is detected, and the power battery power SOC≥30%, it is judged that the vehicle needs to be remotely cold started at low temperature.

[0049] It can be understood that the vehicle controller VCU determines the conditions for low-temperature cold start: when the minimum temperature of the power battery Tmin≤0℃ and SOC≥30%, it is required; when it is detected that Tmin>0℃ or SOC<30%, no remote low-temperature cold start is required.

[0050] Optionally, when it is detected that the minimum temperature of the power battery Tmin>0°C or the power battery SOC<30%, it is determined that the vehicle does not need to be remotely cold started at low temperature.

[0051] In one embodiment, the vehicle controller VCU feeds back the estimated total time t0 of the vehicle's low-temperature cold start time to the T-BOX terminal based on the lowest power battery temperature T0, fuel cell stack temperature T1, ambient temperature T2, and current SOC of the power battery fed back by the BMS, and the T-BOX terminal feeds back to the mobile phone APP or the vehicle intelligent network platform through the wireless communication module.

[0052] In one embodiment, the vehicle controller VCU is based on the minimum temperature of the power battery Tmin=-20℃, the fuel cell stack temperature-30℃, the ambient temperature: -30℃, the power battery SOC: 50%, the fuel cell idle power P4=16kW, the power battery PTC heating power P2=4kW, the fuel cell system PTC heating power P3=8kW, when the power battery SOC is 50% and the power battery minimum temperature is ≥-10℃, the power battery sustainable charging power is P1=5kW; under the ambient temperature of -30℃, the power battery heating rate is 0.5℃ / min, and it is estimated that it takes 20min to heat from -20℃ to -10℃; under the ambient temperature of -30℃, the time from fuel cell start to idle is 6min. According to the low temperature cold start completion judgment submission, the estimated total time is 45min.

[0053] Optionally, the vehicle controller VCU controls the BMS to close the negative high-voltage contactor of the main circuit and the positive high-voltage contactor of the fuel cell circuit. The vehicle controller VCU wakes up the instrument and displays "remote low-temperature cold start" on the instrument.

[0054] Optionally, when a fault is detected in the power battery system, fuel cell system, on-board hydrogen system, or five-in-one controller, the vehicle controller VCU feedback status is "remote low-temperature cold start aborted", and the corresponding fault content is fed back to the remote monitoring platform and mobile phone APP through T-BOX at the same time, and troubleshooting is performed according to the prompts. After the fuel cell controller feeds back "normal shutdown completed", the DCDC module, high-voltage DCDC assembly, and vehicle cooling system in the five-in-one controller stop working, and after the high-voltage contactor is disconnected, each controller and T-BOX enter the dormant state in turn. For example, when the on-board hydrogen system reports a "bottle pressure is too low" fault, the vehicle controller VCU feedback status is "remote low-temperature cold start aborted", and each controller and T-BOX enter the dormant state in turn. The remote monitoring platform and mobile phone APP will prompt the user to check whether the hydrogen bottle pressure is lower than 2.5Mpa. If so, add hydrogen.

[0055] Optionally, when a high-voltage interlock fault is detected, the vehicle controller VCU feedback status is "remote low-temperature cold start aborted", and the fuel cell controller feedback is "normal shutdown completed", the DCDC module, high-voltage DCDC assembly, and vehicle cooling system in the five-in-one controller stop working, and the high-voltage contactor is disconnected, and each controller and T-BOX enters the sleep state in turn.

[0056] Optionally, when it is detected that the T-BOX has lost the wake-up source, the vehicle controller VCU feedback status is "remote low-temperature cold start aborted", the process is terminated, and the fuel cell controller feedbacks "normal shutdown completed", the DCDC module, high-voltage DCDC assembly, and vehicle cooling system in the five-in-one controller stop working, and the high-voltage contactor is disconnected, and each controller and T-BOX enters the sleep state in turn.

[0057] Optionally, when plug-in charging is detected, the vehicle controller VCU feedback status is "remote low-temperature cold start aborted", and the corresponding fault content is fed back to the remote monitoring platform and mobile phone APP through T-BOX. The vehicle controller VCU controls the fuel cell system to shut down and enter the charging process.

[0058] Optionally, when the plug-in hydrogen refueling is detected, the vehicle controller VCU feedback status is "remote low-temperature cold start aborted", and the corresponding fault content is simultaneously fed back to the remote monitoring platform and the mobile phone APP through the T-BOX. After the vehicle controller VCU controls the fuel cell to shut down urgently, the DCDC module, high-voltage DCDC assembly, and vehicle cooling system in the five-in-one controller stop working, and the high-voltage contactor is disconnected, each controller and T-BOX enter the sleep state in turn.

[0059] Step S102: When it is determined that a remote low-temperature cold start is required, the power battery is heated, and the sustainable charging power of the power battery is monitored in real time to determine whether the conditions for starting the fuel cell are met.

[0060] Specifically, when the minimum temperature of the power battery Tmin≤0℃ and SOC≥30%, the vehicle controller VCU determines that a low-temperature cold start is required, and the power battery is heated by closing the positive high-voltage contactor of the heating circuit and the negative high-voltage contactor of the heating circuit through the power battery controller BMS, and the sustainable charging power of the power battery is monitored in real time through the vehicle controller VCU. When the maximum sustainable charging power currently allowed by the power battery is greater than or equal to the actual charging power of the power battery, it is determined that the power battery meets the conditions for starting the fuel cell; when the maximum sustainable charging power currently allowed by the power battery is less than the actual charging power of the power battery, it is determined that the power battery does not meet the conditions for starting the fuel cell. It can be understood that the allowable sustainable charging power of the power battery is the maximum sustainable charging power allowed by the current power battery. It should be noted that the BMS obtains the continuous charging power by monitoring the minimum temperature and SOC of the power battery.

[0061] In one embodiment, the vehicle controller VCU monitors the sustainable charging power P1 of the power battery, the heating power P2 of the power battery, the heating power P3 of the fuel cell, and the idling output power P4 of the fuel cell in real time. When P1 ≥ P4-P2-P3, the vehicle controller VCU sends a "fuel cell start-up" command to the fuel cell system controller FCU.

[0062] Optionally, the vehicle controller VCU monitors the sustainable charging power P1 of the power battery in real time. When the power battery SOC is 50% and the minimum temperature of the power battery is ≥-10°C, the sustainable charging power of the power battery is P1=5kW, the power battery heating power is P2=4kW, the fuel cell heating power is P3=8kW, and the fuel cell idle output power is P4=16kW. When the power battery SOC is 50% and the minimum temperature of the power battery is ≥-10°C, P4≥P4-P2-P3 is satisfied, and the vehicle controller VCU sends a "fuel cell start-up" command to the fuel cell system controller FCU.

[0063] Optionally, the vehicle controller VCU sends an enable command to the high-voltage DCDC assembly to start outputting 27.5V, which is used to power the fuel cell stack cooling module and the vehicle's low-voltage electrical appliances and 24V battery. This allows the fuel cell system to dissipate heat during operation to ensure normal operation of the system; the vehicle cooling controller ATS controls the start of the water pump and cooling fan according to the temperature of the fuel cell BOP. This allows the fuel cell BOP to dissipate heat during operation to ensure normal operation of the system.

[0064] Step S103: When the conditions are met, the fuel cell is turned on and the stable output power of the fuel cell is obtained.

[0065] Specifically, when the maximum sustainable charging power allowed by the power battery is greater than or equal to the actual charging power of the power battery, it is determined that the power battery meets the condition for starting the fuel cell, and the fuel cell is started.

[0066] After the fuel cell is turned on, the vehicle controller sends an output power request Pa, and the fuel cell controller FCU responds to the output power Pb according to the output power request Pa sent by the vehicle controller. It can be understood that the stable output power of the fuel cell needs to be calculated based on the output power sent by the controller and the response output power of the fuel cell. It can be understood that the purpose of setting the output power request is to improve the economy of the vehicle, extend the service life of the fuel cell, and extend the service life of the power battery.

[0067] The purpose of heating the power battery and detecting the sustainable charging power is to determine whether the conditions for starting the fuel cell are met. If so, the fuel cell is turned on and the stable output power of the fuel cell is calculated by the formula (Pa-Pb) / Pb<±0.03. It should be noted that the judgment is made based on the output current and voltage. The required current of the vehicle controller VCU is P1, and the corresponding power of the fuel cell controller FCU is P2; if the corresponding error of P2 is within ±3% and it runs continuously for more than 1 minute, it is considered that the output power of the fuel cell is stable.

[0068] Step S104: Determine whether the remote low-temperature cold start is completed based on the temperature of the power battery, the charge state of the power battery, and the stable output power of the fuel cell, and prompt the current remote cold start state of the vehicle.

[0069] Specifically, the vehicle controller VCU feeds back the estimated total time t0 of the vehicle's low-temperature cold start time to the T-BOX terminal based on the lowest power battery temperature T0, fuel cell stack temperature T1, ambient temperature T2, current power battery SOC, fuel cell idle net output power, power battery heating power, fuel cell heating power, power battery heating rate at different ambient temperatures, and fuel cell idle cold start time at different ambient temperatures fed back by the BMS. Within the time range from t0 to the T-BOX terminal, when the stable output power of the fuel cell lasts for more than 1 minute, the lowest temperature of the power battery Tmin ≥ 5°C, and the power battery's power SOC ≥ 40%, the vehicle's remote low-temperature cold start is determined to be completed. Within the time range from t0 to the T-BOX terminal, if any one of the items is not met, the vehicle's remote low-temperature cold start is determined to have failed. It should be noted that regardless of whether the start is completed or failed, the current vehicle cold start status is displayed through the vehicle instrument.

[0070] Optionally, when the remote low-temperature cold start is completed or the T-BOX command is lost, the vehicle controller VCU sends a "fuel cell shutdown" command and executes the "fuel cell shutdown" process. The vehicle controller VCU sends a "fuel cell shutdown" command to the fuel cell system controller FCU, and the FCU executes the shutdown process.

[0071] Optionally, when the working state of the fuel cell controller FCU is "normal shutdown completed", the vehicle controller VCU sends a disable enable instruction to the DCDC module of the five-in-one controller, the high-voltage DCDC assembly, and the vehicle cooling system controller, and each module stops working. After the high-voltage load stops working, the high-voltage contactor is disconnected to avoid adhesion and damage to the high-voltage contactor.

[0072] The vehicle controller VCU controls the high-voltage power distribution module in the five-in-one controller to disconnect the positive high-voltage contactor of the auxiliary drive circuit; after the vehicle control VCU detects that the positive high-voltage contactor of the auxiliary drive circuit is disconnected, it sends a command to control the BMS to disconnect the negative high-voltage contactor of the main circuit, disconnect the positive high-voltage contactor of the fuel cell circuit, and the power battery system controller BMS stops the power battery heating and disconnects the positive and negative high-voltage contactors of the heating circuit. The vehicle controller VCU sends the "remote low-temperature start completed" status to the T-BOX terminal, and the instrument displays "remote low-temperature start completed". After 30 seconds, each controller enters sleep mode. The T-BOX terminal feeds back the "remote low-temperature start completed" status to the mobile phone APP or the vehicle intelligent network platform through the wireless communication module. After 30 seconds, the T-BOX terminal enters sleep mode.

[0073] Reference Figure 2 , Figure 2 FIG. 1 is a schematic diagram of a low-temperature cold start device for a hydrogen fuel vehicle provided by the present invention. Figure 2 As shown, the device comprises:

[0074] The judgment module 201 is used to judge whether the vehicle needs a remote low-temperature cold start according to the remote low-temperature cold start instruction received by the T-BOX terminal.

[0075] The monitoring module 202 is used to heat the power battery when it is determined that a remote low-temperature cold start is required, and to monitor the sustainable charging power of the power battery in real time to determine whether the conditions for starting the fuel cell are met.

[0076] The acquisition module 203 is used to start the fuel cell and acquire the stable output power of the fuel cell when the conditions are met.

[0077] Determination module 204: It is used to determine whether the remote low-temperature cold start is completed according to the temperature of the power battery, the charge state of the power battery and the stable output power of the fuel cell, and prompt the current remote cold start state of the vehicle.

[0078] Furthermore, in a possible implementation manner, the monitoring module 202 is further configured to enable the vehicle BMS to obtain the sustainable charging power of the power battery by monitoring the minimum temperature of the power battery and the charge state of the power battery;

[0079] When the sustainable charging power of the power battery is greater than or equal to the actual charging power of the power battery, determining that the power battery meets the condition for starting the fuel cell;

[0080] When the sustainable charging power of the power battery is less than the actual charging power of the power battery, it is determined that the power battery does not meet the condition for starting the fuel cell.

[0081] Furthermore, in a possible implementation manner, the acquisition module 203 is further used to acquire the required power of the entire vehicle, and determine the response output power of the fuel cell according to the required power of the entire vehicle;

[0082] According to the formula (Pa-Pb) / Pb<±0.03, the stable output power of the fuel cell is calculated, wherein Pa is the response output power of the fuel cell and Pb is the required power of the whole vehicle.

[0083] Furthermore, in a possible implementation, the determination module 204 is also used to determine that the vehicle remote low-temperature cold start is completed when, within a preset time range, the stable output power of the fuel cell is greater than a set time, the minimum temperature of the power battery is greater than or equal to the set temperature, and the power of the power battery is greater than or equal to the set value.

[0084] Furthermore, in a possible implementation manner, the judgment module 201 is further configured to collect the lowest temperature of the power battery according to the temperature sensor;

[0085] Determine the charge state of the power battery according to the voltage sensor and the current sensor;

[0086] When it is detected that the lowest temperature of the power battery is less than or equal to the set temperature, and the power battery power is greater than or equal to the set value, it is determined that the vehicle needs to be remotely cold started at low temperature;

[0087] When it is detected that the lowest temperature of the power battery is greater than the set temperature or the power battery power is less than the set value, it is determined that the vehicle does not need to be remotely cold started at low temperature.

[0088] Furthermore, in a possible implementation manner, the judgment module 201 is also used to determine the low-temperature cold start time of the vehicle according to the lowest temperature of the power battery, the current charge state of the power battery, the temperature of the fuel cell stack, and the ambient temperature.

[0089] Furthermore, in a possible implementation, a processing module is also included, which is used to heat the power battery by closing the positive high-voltage contactor of the heating circuit and the negative high-voltage contactor of the heating circuit.

[0090] Refer to the following Figure 3 The electronic device 300 according to this embodiment of the present invention will be described. Figure 3 The electronic device 300 shown is only an example and should not bring any limitation to the functions and scope of use of the embodiments of the present invention.

[0091] like Figure 3As shown, the electronic device 300 is in the form of a general computing device. The components of the electronic device 300 may include but are not limited to: at least one processing unit 310, at least one storage unit 320, and a bus 330 connecting different system components (including the storage unit 320 and the processing unit 310).

[0092] The storage unit stores program codes, which can be executed by the processing unit 310, so that the processing unit 310 executes the steps according to various exemplary embodiments of the present invention described in the above “Embodiment Method” section of this specification.

[0093] 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) 321 and / or a cache memory unit 322 , and may further include a read-only memory unit (ROM) 323 .

[0094] The storage unit 320 may also include a program / utility 324 having a set (at least one) of program modules 325, such program modules 325 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.

[0095] Bus 330 may represent one or more of several types of bus structures, including a memory unit bus or memory unit controller, a peripheral bus, an accelerated graphics port, a processing unit, or a local bus using any of a variety of bus architectures.

[0096] The electronic device 300 may also communicate with one or more external devices (e.g., keyboards, pointing devices, Bluetooth devices, etc.), may also communicate with one or more devices that enable a user to interact with the electronic device 300, and / or communicate with any device that enables the electronic device 300 to communicate with one or more other computing devices (e.g., routers, modems, etc.). Such communication may be performed via an input / output (I / O) interface 350. Furthermore, the electronic device 300 may also communicate with one or more networks (e.g., local area networks (LANs), wide area networks (WANs), and / or public networks, such as the Internet) via a network adapter 360. As shown, the network adapter 360 communicates with other modules of the electronic device 300 via a bus 330. It should be understood that, although not shown in the figure, other hardware and / or software modules may be used in conjunction with the electronic device 300, including but not limited to: microcode, device drivers, redundant processing units, external disk drive arrays, RAID systems, tape drives, and data backup storage systems, etc.

[0097] Through the description of the above implementation, it is easy for those skilled in the art to understand that the example implementation described here can be implemented by software, or by software combined with necessary hardware. Therefore, the technical solution according to the implementation of the present disclosure 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, including 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 implementation of the present disclosure.

[0098] According to the solution of the present disclosure, a computer-readable storage medium is also provided, on which a program product capable of implementing the above method of the present specification is stored. In some possible implementations, various aspects of the present invention can also be implemented in the form of a program product, which includes a program code, and when the program product is run on a terminal device, the program code is used to enable the terminal device to execute the steps according to various exemplary implementations of the present invention described in the above "Exemplary Method" section of the present specification.

[0099] refer to Figure 4 As shown, a program product 400 for implementing the above method according to an embodiment of the present invention is described, which can adopt a portable compact disk read-only memory (CD-ROM) and include 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 can be any tangible medium containing or storing a program, which can be used by or in combination with an instruction execution system, an apparatus or a device.

[0100] The program product may use 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 device, or any combination of the above. More specific examples (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 of the above.

[0101] Computer readable signal media may include data signals propagated in baseband or as part of a carrier wave, in which readable program code is carried. Such propagated data signals may take a variety of forms, including but not limited to electromagnetic signals, optical signals, or any suitable combination of the above. Readable signal media may also be any readable medium other than a readable storage medium, which may send, propagate, or transmit a program for use by or in conjunction with an instruction execution system, apparatus, or device.

[0102] The program code embodied on the readable medium may be transmitted using any appropriate medium, including but not limited to wireless, wired, optical cable, RF, etc., or any suitable combination of the foregoing.

[0103] 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++, etc., and 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 separate 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 cases involving a remote computing device, the remote computing device may be connected to the user computing device through 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., through the Internet using an Internet service provider).

[0104] In addition, the above-mentioned figures are only schematic illustrations of the processes included in the method according to an exemplary embodiment of the present invention, and are not intended to be limiting. It is easy to understand that the processes shown in the above-mentioned figures do not indicate or limit the time sequence of these processes. In addition, it is also easy to understand that these processes can be performed synchronously or asynchronously, for example, in multiple modules.

[0105] In summary, the present application provides a method, device, equipment and storage medium for low-temperature cold start of hydrogen fuel vehicles. According to the remote low-temperature cold start command received by the T-BOX terminal, it is determined whether the vehicle needs a remote low-temperature cold start; when it is determined that a remote low-temperature cold start is required, the power battery is heated, and the sustainable charging power of the power battery is monitored in real time to determine whether the conditions for starting the fuel cell are met; when the conditions are met, the fuel cell is turned on and the stable output power of the fuel cell is obtained; according to the temperature of the power battery, the charge state of the power battery and the stable output power of the fuel cell, it is determined whether the remote low-temperature cold start is completed, and the current vehicle remote cold start status is prompted. It can effectively reduce the waiting time of hydrogen fuel vehicles at low temperature cold start, and at the same time realize remote preheating of the vehicle to improve the vehicle experience.

[0106] The above description is only a specific implementation of the present application, so that those skilled in the art can understand or implement the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to the embodiments shown herein, but will conform to the widest range consistent with the principles and novel features applied for herein.

[0107] The present invention is described with reference to flowcharts and / or block diagrams of methods, devices (systems) and computer program products according to embodiments of the present invention. It should be understood that each process and / or block in the flowchart and / or block diagram, as well as the combination of processes and / or blocks in the flowchart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor or other programmable data processing device to produce a machine, so that the instructions executed by the processor of the computer or other programmable data processing device generate instructions for implementing the process in the flowchart. Figure 1 A process or multiple processes and / or boxes Figure 1 A device that provides the functions specified in a block or multiple blocks.

Claims

1. A low temperature cold start method for a hydrogen fuel vehicle, characterized in that: include: According to the remote low-temperature cold start command received by the T-BOX terminal, determine whether the vehicle needs a remote low-temperature cold start; When it is determined that a remote low-temperature cold start is required, the power battery is heated, and the sustainable charging power of the power battery is monitored in real time to determine whether the conditions for starting the fuel cell are met; When the conditions are met, the fuel cell is turned on and a stable output power of the fuel cell is obtained; Determine whether the remote low-temperature cold start is completed based on the temperature and charge state of the power battery and the stable output power of the fuel cell, and prompt the current remote cold start status of the vehicle; Among them, judging whether the vehicle needs a remote low-temperature cold start includes: determining the low-temperature cold start time of the vehicle according to the lowest temperature of the power battery, the charge state of the power battery, the current temperature of the fuel cell stack, the ambient temperature, the fuel cell idle net output power, the power battery heating power, the fuel cell heating power, the power battery heating rate at different ambient temperatures, and the fuel cell idle cold start time at different ambient temperatures.

2. The method according to claim 1, characterized in that The real-time monitoring of the sustainable charging power of the power battery to determine whether the condition for starting the fuel cell is met includes: The vehicle BMS obtains the sustainable charging power of the power battery by monitoring the minimum temperature of the power battery and the charge state of the power battery; When the sustainable charging power of the power battery is greater than or equal to the actual charging power of the power battery, determining that the power battery meets the condition for starting the fuel cell; When the sustainable charging power of the power battery is less than the actual charging power of the power battery, it is determined that the power battery does not meet the condition for starting the fuel cell.

3. The method according to claim 1, characterized in that The step of obtaining the stable output power of the fuel cell comprises: Obtaining the required power of the whole vehicle, and determining the response output power of the fuel cell according to the required power of the whole vehicle; According to the formula (Pa-Pb) / Pb<±0.03, the stable output power of the fuel cell is calculated, wherein Pa is the response output power of the fuel cell and Pb is the required power of the whole vehicle.

4. The method according to claim 1, characterized in that: The step of determining whether the remote low-temperature cold start is completed according to the temperature of the power battery, the charge state of the power battery, and the stable output power of the fuel cell includes: Within a preset time range, when the stable output power of the fuel cell is greater than the set time, the minimum temperature of the power battery is greater than or equal to the set temperature, and the power of the power battery is greater than or equal to the set value, it is determined that the vehicle remote low-temperature cold start is completed.

5. The method according to claim 1, characterized in that The determining whether the vehicle needs a low-temperature cold start includes: The lowest temperature of the power battery is collected by the temperature sensor; Determine the charge state of the power battery according to the voltage sensor and the current sensor; When it is detected that the lowest temperature of the power battery is less than or equal to the set temperature, and the power battery power is greater than or equal to the set value, it is determined that the vehicle needs to be remotely cold started at low temperature; When it is detected that the lowest temperature of the power battery is greater than the set temperature or the power battery power is less than the set value, it is determined that the vehicle does not need to be remotely cold started at low temperature.

6. The method according to claim 1, characterized in that The step of heating the power battery comprises: The power battery is heated by closing the positive high-voltage contactor of the heating circuit and the negative high-voltage contactor of the heating circuit.

7. A low-temperature cold start device for a hydrogen fuel vehicle, characterized in that: include: A judgment module, which is used to judge whether the vehicle needs a remote low-temperature cold start according to the remote low-temperature cold start instruction received by the T-BOX terminal; A monitoring module, which is used to heat the power battery when it is determined that a remote low-temperature cold start is required, and to monitor the sustainable charging power of the power battery in real time to determine whether the conditions for starting the fuel cell are met; An acquisition module, which is used to start the fuel cell and acquire the stable output power of the fuel cell when the conditions are met; A determination module, which is used to determine whether the remote low-temperature cold start is completed according to the temperature of the power battery, the charge state of the power battery and the stable output power of the fuel cell, and prompt the current remote cold start state of the vehicle; The judgment module is also used to determine the low-temperature cold start time of the vehicle based on the minimum temperature of the power battery, the charge state of the power battery, the current temperature of the fuel cell stack, the ambient temperature, the fuel cell idle net output power, the power battery heating power, the fuel cell heating power, the power battery heating rate at different ambient temperatures, and the fuel cell idle cold start time at different ambient temperatures.

8. An electronic device, characterized in that: The electronic device comprises: processor; A memory having computer-readable instructions stored thereon, wherein when the computer-readable instructions are executed by the processor, the method according to any one of claims 1 to 6 is implemented.

9. A computer-readable storage medium, characterized in that: The computer program instructions are stored therein, and when the computer program instructions are executed by a computer, the computer is caused to execute the method according to any one of claims 1 to 6.

Images