Device and method for controlling the start-up of a fuel cell vehicle

Abstract

A device and method for controlling the startup of a fuel cell vehicle are provided. The device and method include a chart that records the time difference between the start time of hydrogen supply and the start time of air supply for each cooling water temperature at the outlet of the fuel cell stack. During startup of the fuel cell vehicle, the start time of air supply is adjusted based on the chart to prevent cell voltage deviation and cell reverse voltage of the fuel cell stack. During startup of the fuel cell vehicle, a temperature sensor measures the cooling water temperature of the fuel cell stack, and a controller adjusts the start time of air supply based on the cooling water temperature of the fuel cell stack.

Description

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims the benefit of priority from Korean Patent Application No. 10-2020-0066538, filed on Jun. 2, 2020, which is hereby incorporated by reference herein in its entirety. Technical Field

[0003] The present disclosure relates to a technology for preventing a battery reverse voltage and a battery voltage deviation during the start-up of a fuel cell vehicle. Background Art

[0004] Typically, a fuel cell vehicle includes a fuel cell system with a fuel cell stack containing multiple stacked fuel cells; a fuel supply system that supplies hydrogen gas, a fuel for the fuel cell stack; an air supply system that supplies oxygen, an oxidant required for the electrochemical reaction; a thermal management system that controls the temperature of the fuel cell stack; and a battery management system that stores the energy generated by the fuel cell stack. The fuel supply system decompresses the compressed hydrogen in the hydrogen tank and supplies it to the stack's fuel electrode (anode). Furthermore, the air supply system operates a blower to draw in outside air to the stack's air electrode (cathode).

[0005] When hydrogen is supplied to the fuel electrode of the fuel cell stack and when oxygen is supplied to the air electrode of the fuel cell stack, hydrogen ions are separated from the fuel electrode by a catalytic reaction. The separated hydrogen ions are transferred to the oxidation electrode serving as the air electrode through the electrolyte membrane, and the hydrogen ions separated from the fuel electrode, electrons, and oxygen react electrochemically at the oxidation electrode to obtain electrical energy. Specifically, electrochemical oxidation with hydrogen occurs at the fuel electrode, and electrochemical reduction with oxygen occurs at the air electrode. Due to the movement of electrons generated at this time, electricity and heat are generated. In addition, water vapor or water is generated by the chemical reaction of hydrogen and oxygen coupled to each other.

[0006] An exhaust device is provided to exhaust hydrogen, oxygen, etc. that do not react with byproducts (such as water vapor, water, and heat generated in the process of generating electricity for the fuel cell stack). Gases such as water vapor, hydrogen, and oxygen are released into the atmosphere through an exhaust channel. Components such as a blower, a hydrogen circulation blower, a water pump, etc. for driving the fuel cell are connected to the main bus terminal to facilitate the start-up of the fuel cell. Various relays for facilitating power disconnection and connection and diodes for preventing reverse current from flowing to the fuel cell can be connected to the main bus terminal.

[0007] The dry air supplied by the blower is humidified by a humidifier and then supplied to the cathode of the fuel cell stack. In addition, the exhaust gas of the cathode can be used to humidify the dry air to be supplied to the cathode by being transferred to the humidifier while being humidified by internally generated water. Without considering the temperature of the external air during startup, this conventional technology for controlling the startup of a fuel cell vehicle supplies hydrogen and air (oxygen) to the fuel cell stack almost simultaneously (for example, about 0.5 seconds). Therefore, during low-temperature startup, the cell voltage of the fuel cell stack is caused to change.

[0008] Furthermore, conventional technologies for controlling the startup of fuel cell vehicles have a problem in that, when air is introduced into the cathode due to poor performance of the air shutoff valve (ACV), a cell reverse voltage (e.g., approximately -0.8V) is generated in the fuel cell stack during low-temperature startup. For reference, the air previously introduced into the cathode generates water. This generated water freezes in the reaction area on the anode side, which is exposed to low temperatures, causing a temporary hydrogen deficiency and generating a cell reverse voltage.

[0009] The items described in this background section are disclosed to enhance understanding of the background of the present invention and may include items in addition to existing technologies that are known to one of ordinary skill in the art to which this technology belongs. Summary of the Invention

[0010] The present disclosure provides a device and method for controlling the startup of a fuel cell vehicle, the device and method having a chart in which the time difference between the hydrogen supply start time point and the air supply start time point for each cooling water temperature at the outlet of the fuel cell stack is recorded, and the air supply start time point is adjusted based on the chart during the startup of the fuel cell vehicle to prevent cell reverse voltage and cell voltage deviation of the fuel cell stack.

[0011] The technical problems to be solved by the present invention are not limited to the aforementioned problems, and those skilled in the art to which the present disclosure pertains will clearly understand any other technical problems not mentioned herein from the following description.

[0012] According to one aspect of the present disclosure, an apparatus for controlling the startup of a fuel cell vehicle may include: a temperature sensor configured to measure the temperature of cooling water for a fuel cell stack; and a controller configured to adjust the air supply start time during startup of the fuel cell vehicle based on the cooling water temperature of the fuel cell stack. In one implementation, the temperature sensor may be configured to measure the cooling water temperature at the outlet of the fuel cell stack.

[0013] In one implementation, the apparatus may further include a storage device configured to store a chart in which the time difference between the start time of hydrogen supply and the start time of air supply for each cooling water temperature of the fuel cell stack may be recorded. In this regard, the chart may include a first chart applied when air is not introduced into the cathode of the fuel cell stack, and a second chart applied when air is introduced into the cathode of the fuel cell stack.

[0014] In addition, the controller may be configured to adjust the air supply start time point based on a first chart in response to determining that air is not introduced into the cathode of the fuel cell stack, and to adjust the air supply start time point based on a second chart in response to determining that air is introduced into the cathode of the fuel cell stack. The controller may be configured to determine that air is not introduced into the cathode of the fuel cell stack when an open circuit voltage (OCV) of the fuel cell stack is less than a reference voltage at a time point after a reference time after the pressure of hydrogen gas supplied to the fuel cell stack reaches a target pressure, and to determine that air is introduced into the cathode of the fuel cell stack when the OCV of the fuel cell stack is equal to or greater than the reference voltage.

[0015] According to another aspect of the present disclosure, a method for controlling the startup of a fuel cell vehicle may include: initiating a startup sequence for the fuel cell vehicle; obtaining a cooling water temperature of a fuel cell stack; and adjusting an air supply startup time based on the obtained cooling water temperature. In this regard, the cooling water temperature may be the cooling water temperature at an outlet of the fuel cell stack.

[0016] In one implementation, the method may further include storing a chart that records the time difference between the hydrogen supply start time and the air supply start time for each cooling water temperature of the fuel cell stack. In this regard, the chart may include: a first chart applied when air is not introduced into the cathode of the fuel cell stack, and a second chart applied when air is introduced into the cathode of the fuel cell stack. In addition, adjusting the air supply start time may include: determining whether air is introduced into the cathode of the fuel cell stack; when air is not introduced into the cathode of the fuel cell stack, adjusting the air supply start time based on the first chart; and when air is introduced into the cathode of the fuel cell stack, adjusting the air supply start time based on the second chart.

[0017] Determining whether air is introduced into the cathode of the fuel cell stack may include: detecting the open circuit voltage (OCV) of the fuel cell stack at a time point after a reference time after the pressure of the hydrogen gas supplied to the fuel cell stack reaches a target pressure, and when the OCV of the fuel cell stack is less than the reference voltage; determining that air is not introduced into the cathode of the fuel cell stack; and when the OCV of the fuel cell stack is equal to or greater than the reference voltage, determining that air is introduced into the cathode of the fuel cell stack.

[0018] According to another aspect of the present disclosure, a device for controlling the startup of a fuel cell vehicle may include: a storage device configured to store a first chart and a second chart, wherein the time difference between the hydrogen supply start time point and the air supply start time point for each cooling water temperature at the outlet of the fuel cell stack is recorded in the first chart and the second chart; a temperature sensor configured to measure the cooling water temperature at the outlet of the fuel cell stack; and a controller configured to adjust the air supply start time point based on the first chart when air is not introduced into the cathode of the fuel cell stack during startup of the fuel cell vehicle; and to adjust the air supply start time point based on the second chart when air is introduced into the cathode of the fuel cell stack.

[0019] In one implementation, the controller may be configured to determine that air is not introduced into the cathode of the fuel cell stack in response to determining that the open circuit voltage (OCV) of the fuel cell stack is less than the reference voltage at a time point after a reference time after the pressure of the hydrogen gas supplied to the fuel cell stack reaches a target pressure; and to determine that air is introduced into the cathode of the fuel cell stack in response to determining that the OCV of the fuel cell stack is equal to or greater than the reference voltage. Furthermore, at the same cooling water temperature, the delay time of the second chart is longer than the delay time of the first chart. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The above and other objects, features and advantages of the present disclosure will become more apparent from the following detailed description made in conjunction with the accompanying drawings:

[0021] Figure 1 is a configuration diagram of a start control device for a fuel cell vehicle according to an exemplary embodiment of the present disclosure;

[0022] Figure 2 is an exemplary diagram showing a first map stored in a storage device provided in a start control device of a fuel cell vehicle according to an exemplary embodiment of the present disclosure;

[0023] Figure 3 is an exemplary diagram showing a second map stored in a storage device provided in a start control device of a fuel cell vehicle according to an exemplary embodiment of the present disclosure;

[0024] Figure 4 is an exemplary diagram illustrating performance of a start-up control device for a fuel cell vehicle according to an exemplary embodiment of the present disclosure;

[0025] Figure 5 is a flowchart illustrating a startup control method of a fuel cell system according to an exemplary embodiment of the present disclosure; and

[0026] Figure 61 is a block diagram illustrating a computing system for executing a method for protecting connected car service information according to an exemplary embodiment of the present disclosure. DETAILED DESCRIPTION

[0027] It should be understood that the term "vehicle" or "vehicular" or other similar terms as used herein generally include motor vehicles, such as passenger cars including sport utility vehicles (SUVs), buses, trucks, various commercial vehicles, watercraft including various boats and ships, aircraft, etc., and include hybrid vehicles, electric vehicles, gasoline vehicles, plug-in hybrid vehicles, hydrogen-powered vehicles and other alternative fuel vehicles (e.g., fuels derived from resources other than petroleum).

[0028] Although the exemplary embodiments are described as using multiple units to perform the exemplary processes, it should be understood that the exemplary processes can also be performed by one or more modules. Furthermore, it should be understood that the term controller / control unit refers to a hardware device that includes a memory and a processor and is specifically programmed to perform the processes described herein. The memory is configured to store the modules, and the processor is specifically configured to execute the modules in order to perform one or more processes described further below.

[0029] The terms used herein are for the purpose of describing particular embodiments only and are not intended to limit the present disclosure. As used herein, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that when used in this specification, the terms "comprises" and / or "comprising" specify the presence of stated features, integers, steps, operations, elements, and / or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and / or groups thereof. As used herein, the term "and / or" includes any and all combinations of one or more of the relevant listed items.

[0030] Unless otherwise specified or obvious from the context, as used herein, the term "about" is understood to mean within the normal tolerance range in the art, for example, within 2 standard deviations of the mean. "About" can be understood to mean within 10%, 9%, 8%, 7%, 6%, 5%, 4%, 3%, 2%, 1%, 0.5%, 0.1%, 0.05%, or 0.01% of the stated value. Unless otherwise clear from the context, all numerical values ​​provided herein are modified by the term "about."

[0031] Hereinafter, some exemplary embodiments of the present disclosure will be described in detail with reference to the exemplary drawings. When adding reference numbers to the components of each drawing, it should be noted that even if these components are shown on other drawings, the same reference numbers are used to represent the same or equivalent components. In addition, when describing the embodiments of the present disclosure, if it is determined that related known configurations or functions interfere with the understanding of the embodiments of the present disclosure, the detailed description of the related known configurations or functions will be omitted.

[0032] When describing the components according to the embodiments of the present disclosure, terms such as first, second, A, B, (a), (b) can be used. These terms are only intended to distinguish these components from other components, and these terms do not limit the properties, order or sequence of these components. Unless otherwise defined, all terms used in this article (including technical terms and scientific terms) have the same meaning as those of ordinary skill in the art to which the present disclosure belongs. It should be further understood that the terms defined in commonly used dictionaries should be interpreted as having a meaning consistent with the meaning in the context of the relevant art, and should not be interpreted in an idealized or overly formal sense, unless clearly defined as such herein.

[0033] Figure 1 FIG. 1 is a flow chart of a startup control device for a fuel cell vehicle according to an exemplary embodiment of the present disclosure. Figure 1 As shown, the startup control device 100 for a fuel cell vehicle according to an exemplary embodiment of the present disclosure may include a storage device 10, a temperature sensor 20, and a controller 30. In this regard, the components may be coupled to each other to be implemented as a single component, and some components may be omitted based on a scheme for implementing the startup control device 100 for a fuel cell vehicle according to an exemplary embodiment of the present disclosure.

[0034] When describing each component, first, the storage device 10 can be configured to store various logics, algorithms, and programs that are required in the process of adjusting the air supply start time point based on the cooling water temperature at the outlet of the fuel cell stack 400 during startup of the fuel cell vehicle. The storage device 10 can be configured to store a chart in which the time difference between the hydrogen supply start time point and the air supply start time point is recorded for each cooling water temperature at the outlet of the fuel cell stack 400. In this regard, the storage device 10 can be configured to store a first chart that is applied when air is not introduced into the cathode of the fuel cell stack 400, and a second chart that is applied when air is introduced into the cathode of the fuel cell stack 400.

[0035] Figure 2 : is an exemplary diagram showing a first map stored in a storage device provided in a start control device of a fuel cell vehicle according to an exemplary embodiment of the present disclosure. Figure 2In the graph, the horizontal axis represents the cooling water temperature at the outlet of the fuel cell stack 400, and the vertical axis represents the time difference between the start time of hydrogen supply and the start time of air supply. In other words, the vertical axis represents the delay time from the start of hydrogen supply to the start of air supply. It can be seen that the first graph, which is applied when air is not introduced into the cathode of the fuel cell stack 400, increases the delay time when the cooling water temperature is low, and therefore, sufficient hydrogen can be supplied to the cathode of the fuel cell stack.

[0036] Figure 3 : is an exemplary diagram showing a second map stored in a storage device provided in a start control device of a fuel cell vehicle according to an exemplary embodiment of the present disclosure. Figure 3 In the graph, the horizontal axis represents the cooling water temperature at the outlet of the fuel cell stack 400, and the vertical axis represents the time difference between the start time of hydrogen supply and the start time of air supply. It can be seen that, similar to the first graph, the second graph, which is applied when air is introduced into the cathode of the fuel cell stack 400, also increases the delay time when the cooling water temperature is low, and therefore, sufficient hydrogen can be supplied to the cathode of the fuel cell stack. However, at the same cooling water temperature, the delay time is longer than that of the first graph.

[0037] The storage device 10 may include: memories such as a flash memory type, a hard disk type, a micro type, and a card type (for example, a secure digital card (SD card) or an extreme digital card (XD card)); and at least one type of storage medium such as a random access memory (RAM) type, a static RAM (SRAM) type, a read-only memory (ROM) type, a programmable ROM (PROM) type, an electrically erasable programmable ROM (EEPROM) type, a magnetic RAM (MRAM) type, a magnetic disk type, and an optical disk type.

[0038] The temperature sensor 20 may be configured to measure the cooling water temperature at the outlet of the fuel cell stack 400. The temperature sensor 20 may also be configured to measure the cooling water temperature at the inlet of the fuel cell stack 400. The controller 30 may be configured to perform the overall operation of each component to perform its function normally. Such a controller 30 may be embodied in the form of hardware or software, or may be embodied in the form of a combination thereof. Preferably, the controller 30 may be embodied as a microprocessor, but may not be limited thereto. The controller 30 may be connected to a vehicle network to collect various information. In such a connection, the vehicle network may include a controller area network (CAN), a local interconnected network (LIN), FlexRay, a media oriented system transport (MOST), Ethernet, and the like.

[0039] The controller 30 may be configured to perform various controls during the process of adjusting the air supply start time point based on the cooling water temperature at the outlet of the fuel cell stack 400 during the startup of the fuel cell vehicle. The controller 30 may be configured to operate the temperature sensor 20 to measure the cooling water temperature at the outlet of the fuel cell stack 400. In addition, the controller 30 may be configured to operate the temperature sensor 20 to measure the cooling water temperature at the inlet of the fuel cell stack 400. The controller 30 may be configured to detect the open circuit voltage (OCV) of the fuel cell stack 400. The technology for detecting the OCV of the fuel cell stack 400 in the present disclosure is not the subject of the present disclosure. Therefore, any of a variety of widely known solutions may be used.

[0040] The controller 30 may be configured to obtain various information such as a supply time point of hydrogen, a supply pressure of hydrogen, etc. in conjunction with the hydrogen supplier 200 constituting the fuel cell system. The controller 30 may be configured to detect the OCV of the fuel cell stack 400 at a time point after a reference time (e.g., about 1 second) after the supply pressure of hydrogen reaches a target pressure (e.g., about 140 kPa). In addition, the controller 30 may be configured to determine that air is not introduced into the cathode of the fuel cell stack 400 in response to determining that the OCV is less than a reference voltage (e.g., about 30 V), and may be configured to determine that air is introduced into the cathode of the fuel cell stack 400 in response to determining that the OCV is equal to or greater than the reference voltage. In response to determining that air is not introduced into the cathode of the fuel cell stack 400, the controller 30 may be configured to determine that air is introduced into the cathode of the fuel cell stack 400 based on the following information: Figure 2 The first diagram shown adjusts the air supply start time point.

[0041] exist Figure 2 In the embodiment, the controller 30 may be configured to start the air supply about 5 seconds after the start of the hydrogen supply when the cooling water temperature is equal to or less than about -30°C, start the air supply about 2.5 seconds after the start of the hydrogen supply when the cooling water temperature is about -25°C, and supply hydrogen and air to the fuel cell stack 400 almost simultaneously (e.g., about 0.5 seconds apart) when the cooling water temperature exceeds about -20°C. In response to determining that air is introduced into the cathode of the fuel cell stack 400, the controller 30 may be configured to supply air to the fuel cell stack 400 based on the following conditions: Figure 3 The second diagram shown is used to adjust the air supply start time point.

[0042] exist Figure 3, the controller 30 may be configured to start air supply approximately 15 seconds after the start of hydrogen supply when the cooling water temperature is equal to or lower than approximately -30°C, to start air supply approximately 10 seconds after the start of hydrogen supply when the cooling water temperature is approximately -20°C, and to start air supply approximately 5 seconds after the start of hydrogen supply when the cooling water temperature exceeds approximately -10°C. The controller 30 may be configured to adjust the timing of supplying air to the fuel cell stack 400 in conjunction with the air supplier 300 constituting the fuel cell system.

[0043] Figure 4 : is an example diagram showing the performance of the start control device of the fuel cell vehicle according to the exemplary embodiment of the present disclosure, which shows the performance when the cooling water temperature at the outlet of the fuel cell stack 400 is equal to or less than about -30°C and when air is introduced into the cathode of the fuel cell stack 400 due to a malfunction of the air cutoff valve (ACV). Figure 4 , A1 represents the time point when hydrogen supply starts, A2 represents the time point when air supply starts, and A3 represents the time point when startup of the fuel cell vehicle is completed (for example, the time point when the output of the fuel cell stack stabilizes). 410 is a graph showing the supply pressure of hydrogen, 420 is a graph showing the voltage of the first battery, and 430 is a graph showing the voltage of the second battery.

[0044] The controller 30 may be configured to start supplying air at time point A2, which is 15 seconds after time point A1, based on the second chart. By delaying the air supply start time point in this manner to allow sufficient hydrogen to be supplied to the fuel cell stack 400, it is possible to determine that the minimum cell voltage of the fuel cell stack 400 is equal to or greater than approximately 0 V. In other words, it is possible to determine that a cell reverse voltage (e.g., a negative voltage) does not occur.

[0045] Figure 5 is a flowchart illustrating a startup control method for a fuel cell vehicle according to an exemplary embodiment of the present disclosure. First, the controller 30 may be configured to initiate a startup sequence for the fuel cell vehicle in response to a request from a user (501). In this regard, the user may initiate the startup sequence by pressing a start button while engaging the brake pedal, or by turning a start key to set the power state of the fuel cell vehicle to the on state.

[0046] Thereafter, the controller 30 may be configured to obtain the cooling water temperature at the outlet of the fuel cell stack from the temperature sensor 20 (502). Thereafter, the controller 30 may be configured to determine whether air is introduced into the cathode of the fuel cell stack 400 (503). In response to determining that air is not introduced into the cathode of the fuel cell stack 400, the air supply start time point may be adjusted based on the first chart (504). In response to determining that air is introduced into the cathode of the fuel cell stack 400, the air supply start time point may be adjusted based on the second chart (505).

[0047] Figure 6 is a block diagram illustrating a computing system for executing a method for protecting connected car service information according to an exemplary embodiment of the present disclosure. Figure 6 The above-mentioned connected car service information protection method according to the exemplary embodiment of the present disclosure can also be implemented by a computing system. The computing system 1000 may include at least one processor 1100, a memory 1300, a user interface input device 1400, a user interface output device 1500, a storage device 1600, and a network interface 1700 connected via a system bus 1200.

[0048] The processor 1100 may be a central processing unit (CPU) or a semiconductor device that processes instructions stored in the memory 1300 and / or the storage device 1600. The memory 1300 and the storage device 1600 may include various types of volatile or non-volatile storage media. For example, the memory 1300 may include a ROM (Read Only Memory) 1310 and a RAM (Random Access Memory) 1320.

[0049] Thus, the operations of the methods or algorithms described in conjunction with the exemplary embodiments disclosed herein may be directly embodied in hardware or software modules, or a combination thereof, executed by the processor 1100. The software modules may be present in a storage medium (i.e., memory 1300 and / or storage device 1600) such as RAM, flash memory, ROM, EPROM, EEPROM, registers, a hard disk, a solid-state drive (SSD), a removable disk, and a CD-ROM. An exemplary storage medium is coupled to the processor 1100, and the processor may read information from the storage medium and write information to the storage medium. In another approach, the storage medium may be integrated with the processor 1100. The processor and the storage medium may reside in an application-specific integrated circuit (ASIC). The ASIC may reside in a user terminal. In another approach, the processor and the storage medium may reside in the user terminal as separate components.

[0050] The above description is merely an illustration of the technical concept of the present disclosure, and various modifications and changes can be made by those skilled in the art without departing from the basic features of the present disclosure. Therefore, the exemplary embodiments disclosed in the present disclosure are not intended to limit the technical concept of the present disclosure, but to illustrate the present disclosure, and the scope of the technical concept of the present disclosure is not limited by the embodiments. The scope of the present disclosure should be interpreted as being covered by the scope of the appended claims, and all technical concepts falling within the scope of the claims should be interpreted as being included within the scope of the present disclosure.

[0051] An apparatus and method for controlling the startup of a fuel cell vehicle according to an exemplary embodiment of the present disclosure has a chart in which the time difference between the hydrogen supply start time point and the air supply start time point for each cooling water temperature at the outlet of the fuel cell stack is recorded, and the air supply start time point is adjusted based on the chart during the startup of the fuel cell vehicle to prevent cell reverse voltage and cell voltage deviation of the fuel cell stack.

[0052] Although the present disclosure has been described above with reference to exemplary embodiments and the accompanying drawings, the present disclosure is not limited thereto, and various modifications and substitutions may be made by those skilled in the art without departing from the spirit and scope of the present disclosure as claimed in the appended claims.

Claims

1. A device for controlling the start-up of a fuel cell vehicle, the device comprising: a temperature sensor configured to measure a cooling water temperature of the fuel cell stack; a controller configured to adjust an air supply start time point based on the cooling water temperature of the fuel cell stack during startup of the fuel cell vehicle; as well as A storage device is configured to store a map in which a time difference between a hydrogen supply start time point and an air supply start time point for each cooling water temperature of the fuel cell stack is recorded.

2. The device according to claim 1, wherein The temperature sensor is configured to measure a cooling water temperature at an outlet of the fuel cell stack.

3. The device according to claim 1, wherein The chart includes: a first graph applied when air is not introduced to the cathode of the fuel cell stack; and The second diagram applies when the air is introduced to the cathode of the fuel cell stack.

4. The device according to claim 3, wherein The controller is configured to: in response to determining that the air is not introduced into the cathode of the fuel cell stack, adjusting the air supply start time point based on the first map; and In response to determining that the air is introduced into the cathode of the fuel cell stack, the air supply start time point is adjusted based on the second map.

5. The device according to claim 4, wherein The controller is configured to: determining that the air is not introduced into the cathode of the fuel cell stack when the open circuit voltage of the fuel cell stack is less than a reference voltage at a time point after a reference time after the pressure of the hydrogen gas supplied to the fuel cell stack reaches a target pressure; and When the open circuit voltage of the fuel cell stack is equal to or greater than the reference voltage, it is determined that the air is introduced into the cathode of the fuel cell stack.

6. A method for controlling the start-up of a fuel cell vehicle, the method comprising: Initiating, by a processor, a startup sequence for the fuel cell vehicle; The processor obtains the cooling water temperature of the fuel cell stack; adjusting, by the processor, a start time point of air supply based on the obtained cooling water temperature; as well as A map is stored by the processor, wherein a time difference between a hydrogen supply start time point and the air supply start time point for each cooling water temperature of the fuel cell stack is recorded in the map.

7. The method according to claim 6, wherein: The cooling water temperature is the cooling water temperature at the outlet of the fuel cell stack.

8. The method according to claim 6, wherein: The chart includes: a first graph applied when air is not introduced to the cathode of the fuel cell stack; and The second diagram applies when the air is introduced to the cathode of the fuel cell stack.

9. The method according to claim 8, wherein Adjusting the air supply start time includes: determining, by the processor, whether the air is introduced into the cathode of the fuel cell stack; adjusting, by the processor, the air supply start time point based on the first map in response to determining that the air is not introduced into the cathode of the fuel cell stack; and The air supply start time point is adjusted, by the processor, based on the second map in response to determining that the air is introduced into the cathode of the fuel cell stack.

10. The method according to claim 9, wherein: Determining whether the air is introduced into the cathode of the fuel cell stack includes: detecting, by the processor, an open circuit voltage of the fuel cell stack at a time point after a reference time after the pressure of the hydrogen gas supplied to the fuel cell stack reaches a target pressure; determining, by the processor, that the air is not introduced into the cathode of the fuel cell stack in response to determining that the open circuit voltage of the fuel cell stack is less than a reference voltage; and The processor determines, in response to determining that an open circuit voltage of the fuel cell stack is equal to or greater than the reference voltage, that the air is introduced into a cathode of the fuel cell stack.

11. A device for controlling the start-up of a fuel cell vehicle, the device comprising: a storage device configured to store a first map and a second map, wherein a time difference between a hydrogen supply start time point and an air supply start time point for each cooling water temperature at an outlet of the fuel cell stack is recorded in the first map and the second map; a temperature sensor configured to measure a temperature of the cooling water at an outlet of the fuel cell stack; and The controller is configured as: during startup of the fuel cell vehicle, in response to determining that air is not introduced into a cathode of the fuel cell stack, adjusting the air supply start time point based on the first map; and In response to determining that the air is introduced into the cathode of the fuel cell stack, the air supply start time point is adjusted based on the second map.

12. The device according to claim 11, wherein The controller is configured to: At a time point after a reference time after the pressure of the hydrogen gas supplied to the fuel cell stack reaches the target pressure, In response to determining that the open circuit voltage of the fuel cell stack is less than a reference voltage, determining that the air is not introduced into the cathode of the fuel cell stack; and In response to determining that the open circuit voltage of the fuel cell stack is equal to or greater than the reference voltage, it is determined that the air is introduced into the cathode of the fuel cell stack.

13. The device according to claim 11, wherein At the same cooling water temperature, the delay time in the second graph is longer than the delay time in the first graph.

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