Fuel cell hydrogen supply method, system and device and vehicle

Abstract

The invention relates to a fuel cell hydrogen supply method, system and device and a vehicle, and relates to the field of fuel cells, the method is applied to the fuel cell hydrogen supply system, and the method comprises the following steps: when the vehicle is in a fuel cell hydrogen supply mode, obtaining target power of the fuel cell hydrogen supply system; acquiring liquid level values of a plurality of hydrogen storage bottles in the fuel cell hydrogen supply system in real time to obtain a plurality of liquid level values; determining a hydrogen supply and storage bottle of the fuel cell hydrogen supply system according to the liquid level values of the plurality of hydrogen storage bottles; and hydrogen is supplied to the vehicle through the target power and the hydrogen supply and storage cylinder. The hydrogen supply and storage bottles are determined according to the liquid level values of the hydrogen supply bottles, and the liquid level balance of the hydrogen storage bottles can be maintained, so that the high-power operation of the fuel cell is ensured.

Description

Technical Field

[0001] The present disclosure relates to the field of fuel cells, and in particular, to a fuel cell hydrogen supply method, system, device and vehicle. Background Art

[0002] During the actual operation of a fuel cell vehicle, multiple hydrogen bottles may have uneven liquid levels due to inconsistent evaporation rates. That is, some of the multiple hydrogen bottles contain liquid hydrogen, while others are empty, resulting in a reduced hydrogen supply flow rate. This causes the fuel cell to be unable to carry high power, leading to the risk of insufficient power for the entire vehicle. Summary of the Invention

[0003] To overcome the problems existing in the related art, the present disclosure provides a fuel cell hydrogen supply method, system, device and vehicle.

[0004] According to a first aspect of an embodiment of the present disclosure, a fuel cell hydrogen supply method is provided, which is applied to a fuel cell hydrogen supply system. The method includes: When the vehicle is in a fuel cell hydrogen supply mode, obtaining a target power of the fuel cell hydrogen supply system; Real-time acquisition of liquid level values ​​of multiple hydrogen storage bottles in the fuel cell hydrogen supply system to obtain multiple liquid level values; Determining the hydrogen supply and storage bottles of the fuel cell hydrogen supply system according to the liquid level values ​​of the multiple hydrogen storage bottles; The vehicle is supplied with hydrogen through the target power and the hydrogen supply and storage bottle.

[0005] Optionally, determining the hydrogen supply and storage bottles of the fuel cell hydrogen supply system according to the liquid level values ​​of the multiple hydrogen storage bottles includes: The hydrogen supply and storage bottle is determined according to at least one of the multiple liquid level values, the maximum value among the multiple liquid level values, the minimum value among the multiple liquid level values, and the target power.

[0006] Optionally, determining the hydrogen supply and storage bottle according to at least one of the multiple liquid level values, the maximum value among the multiple liquid level values, the minimum value among the multiple liquid level values, and the target power includes: Determining the number of hydrogen storage bottles whose liquid level values ​​are greater than a first liquid level threshold value among the plurality of hydrogen storage bottles; When the number of the hydrogen storage bottles is at least two, determining a difference between the maximum value and a minimum liquid level value among the liquid level values ​​of the at least two hydrogen storage bottles; When the difference is less than or equal to a second liquid level threshold, determining that the at least two hydrogen storage bottles are the hydrogen supply storage bottles; When the difference is greater than the second liquid level threshold, the hydrogen supply and storage bottle is determined according to the target power.

[0007] Optionally, determining the hydrogen supply and storage bottle according to the target power includes: When the target power is greater than or equal to a power threshold, determining the at least two hydrogen storage bottles as the hydrogen supply storage bottles; When the target power is less than the power threshold, the hydrogen supply storage bottle is determined according to the target power and the liquid level values ​​of the at least two hydrogen storage bottles.

[0008] Optionally, the power threshold is determined by the number of the at least two hydrogen storage bottles and the rated power of each hydrogen storage bottle.

[0009] Optionally, determining the hydrogen supply storage bottle according to the target power and the liquid level values ​​of the at least two hydrogen storage bottles includes: Determine the number N of the hydrogen supply and storage bottles according to the target power; The N hydrogen storage bottles with the highest to lowest liquid level values ​​among the at least two hydrogen storage bottles are determined as the hydrogen supply storage bottles; wherein N is less than or equal to the number of the at least two hydrogen storage bottles.

[0010] Optionally, the method further includes: When the hydrogen supply time of the hydrogen supply and storage bottles reaches a preset time, the step of determining the number of hydrogen storage bottles whose liquid level values ​​among the multiple hydrogen storage bottles are greater than a first liquid level threshold is executed.

[0011] Optionally, the method further includes: When the liquid level value of the first hydrogen storage bottle is less than or equal to the first liquid level threshold, the first hydrogen storage bottle is controlled to stop supplying hydrogen, wherein the first hydrogen storage bottle is any one of the hydrogen supply and hydrogen storage bottles.

[0012] According to a second aspect of an embodiment of the present disclosure, a fuel cell hydrogen supply system is provided, the system being used in the steps of the fuel cell hydrogen supply method according to the first aspect of the embodiment of the present disclosure, the system comprising: a plurality of hydrogen storage bottles, a buffer tank, a hydrogen supply solenoid valve, a hydrogen filling port, and a fuel cell; The hydrogen filling port is connected to a plurality of hydrogen storage bottles respectively, and a corresponding liquid inlet solenoid valve is provided between the hydrogen filling port and any of the hydrogen storage bottles, and the liquid inlet solenoid valve is used to control the hydrogenation of the corresponding hydrogen storage bottle; Each hydrogen storage bottle is connected to the buffer tank via a corresponding liquid outlet solenoid valve, and the liquid outlet solenoid valve is used to open the liquid outlet solenoid valve when the corresponding hydrogen storage bottle is a hydrogen supplying bottle, so that the hydrogen storage bottle supplies hydrogen to the buffer tank; and close the liquid outlet solenoid valve when the corresponding hydrogen storage bottle is not a hydrogen supplying bottle, so that the hydrogen storage bottle stops supplying hydrogen to the buffer tank; The buffer tank is connected to the fuel cell through the hydrogen supply solenoid valve, and the hydrogen supply solenoid valve is used to enable the buffer tank to supply hydrogen to the fuel cell.

[0013] According to a third aspect of an embodiment of the present disclosure, a fuel cell hydrogen supply device is provided, which is applied to a fuel cell hydrogen supply system. The device includes: A first acquisition module is used to acquire a target power of the fuel cell hydrogen supply system when the vehicle is in a fuel cell hydrogen supply mode; A second acquisition module is used to obtain liquid level values ​​of multiple hydrogen storage bottles in the fuel cell hydrogen supply system in real time to obtain multiple liquid level values; a determination module, configured to determine the hydrogen supply and storage bottles of the fuel cell hydrogen supply system according to the liquid level values ​​of the plurality of hydrogen storage bottles; A control module is used to supply hydrogen to the vehicle through the target power and the hydrogen supply and storage bottle.

[0014] According to a fourth aspect of an embodiment of the present disclosure, a vehicle is provided, comprising: the fuel cell hydrogen supply device according to the third aspect of an embodiment of the present disclosure.

[0015] Through the above technical solution, when a vehicle is in fuel cell hydrogen supply mode, the target power of the fuel cell hydrogen supply system is obtained; the liquid level values ​​of multiple hydrogen storage bottles in the fuel cell hydrogen supply system are obtained in real time to obtain multiple liquid level values; the hydrogen supply and storage bottle of the fuel cell hydrogen supply system is determined based on the liquid level values ​​of the multiple hydrogen storage bottles; and hydrogen is supplied to the vehicle using the target power and the hydrogen supply and storage bottle. Determining the hydrogen supply and storage bottle based on the liquid level values ​​of each hydrogen supply bottle can maintain liquid level balance among the multiple hydrogen storage bottles, thereby ensuring high-power operation of the fuel cell.

[0016] Other features and advantages of the present disclosure will be described in detail in the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The accompanying drawings are used to provide a further understanding of the present disclosure and constitute a part of the specification. Together with the following detailed description, they are used to explain the present disclosure but do not constitute a limitation of the present disclosure. In the accompanying drawings: Figure 1 The figure is a flow chart showing a method for supplying hydrogen to a fuel cell according to an exemplary embodiment.

[0018] Figure 2 The figure is a schematic diagram of a fuel cell hydrogen supply system according to an exemplary embodiment.

[0019] Figure 3 The figure is a flow chart showing a method for supplying hydrogen to a fuel cell according to an exemplary embodiment.

[0020] Figure 4 The figure is a flow chart showing a method for supplying hydrogen to a fuel cell according to an exemplary embodiment.

[0021] Figure 5The figure is a flow chart showing a method for supplying hydrogen to a fuel cell according to an exemplary embodiment.

[0022] Figure 6 The figure is a flow chart showing a method for supplying hydrogen to a fuel cell according to an exemplary embodiment.

[0023] Figure 7 is a schematic diagram of a fuel cell hydrogen supply device 700 according to an exemplary embodiment.

[0024] Figure 8 is a schematic diagram of an electronic device 800 according to an exemplary embodiment. DETAILED DESCRIPTION

[0025] The following describes the specific embodiments of the present disclosure in detail with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only used to illustrate and explain the present disclosure and are not intended to limit the present disclosure.

[0026] It should be understood that although operations are described in a particular order in the drawings in the embodiments of the present disclosure, this should not be construed as requiring that these operations be performed in the particular order shown or in a serial order, or that all of the operations shown be performed to obtain the desired results. In certain circumstances, multitasking and parallel processing may be advantageous.

[0027] It should be noted that all actions of acquiring signals, information or data in the present disclosure are carried out in compliance with the corresponding data protection laws and policies of the country where they are located and with the authorization given by the owner of the corresponding device.

[0028] Hydrogen is a clean, carbon-free energy carrier with advantages such as high calorific value, environmentally friendly production methods, and diverse utilization methods. Hydrogen can be directly burned in the air to release energy, or its chemical energy can be converted into electrical energy. Therefore, fuel cell vehicles are a key research area for the application and development of hydrogen energy. The fuel cell hydrogen supply system delivers hydrogen fuel to the fuel cell during operation, providing power to the vehicle.

[0029] The fuel cell hydrogen supply system includes: multiple hydrogen storage bottles, a buffer tank, a hydrogen supply solenoid valve, a hydrogen filling port and a fuel cell; The hydrogenation port is connected to a plurality of hydrogen storage bottles respectively, and a corresponding liquid inlet solenoid valve is provided between the hydrogenation port and any of the hydrogen storage bottles, and the liquid inlet solenoid valve is used to control the hydrogenation of the corresponding hydrogen storage bottle; Each hydrogen storage bottle is connected to the buffer tank through a corresponding liquid outlet solenoid valve, and the liquid outlet solenoid valve is used to open the liquid outlet solenoid valve when the corresponding hydrogen storage bottle is a hydrogen supplying hydrogen storage bottle so that the hydrogen storage bottle supplies hydrogen to the buffer tank; and close the liquid outlet solenoid valve when the corresponding hydrogen storage bottle is not a hydrogen supplying hydrogen storage bottle so that the hydrogen storage bottle stops supplying hydrogen to the buffer tank; The buffer tank is connected to the fuel cell through the hydrogen supply solenoid valve, and the hydrogen supply solenoid valve is used to enable the buffer tank to supply hydrogen to the fuel cell.

[0030] In one possible embodiment, Figure 1 FIG. 1 is a schematic diagram of a fuel cell hydrogen supply system according to an exemplary embodiment. Figure 1 As shown, the fuel cell hydrogen supply system includes: a first hydrogen storage bottle 110, a second hydrogen storage bottle 120, a buffer tank 130, a hydrogen supply solenoid valve 140, a hydrogen filling port 150 and a fuel cell 160; The hydrogenation port 150 is connected to the first hydrogen storage bottle 110 through a first liquid inlet solenoid valve 111, and the hydrogenation port 150 is connected to the second hydrogen storage bottle 120 through a second liquid inlet solenoid valve 121. The first liquid inlet solenoid valve 111 and the second liquid inlet solenoid valve 121 are both used to control the hydrogenation of the corresponding hydrogen storage bottle; The first hydrogen storage bottle 110 is connected to the buffer tank 130 via a first liquid outlet solenoid valve 112, and the second hydrogen storage bottle 120 is connected to the buffer tank 130 via a second liquid outlet solenoid valve 122. The first liquid outlet solenoid valve 112 and the second liquid outlet solenoid valve 122 are both used to control the corresponding hydrogen storage bottle to supply hydrogen to the buffer tank 130; for example, when the first liquid outlet solenoid valve 112 is opened, the first hydrogen storage bottle 110 supplies hydrogen to the buffer tank 130, and when the first liquid outlet solenoid valve 112 is closed, the first hydrogen storage bottle 110 stops supplying hydrogen to the buffer tank 130; wherein, the buffer tank 130 is used to balance the hydrogen supply pressure; The buffer tank 130 is connected to the fuel cell 160 via a hydrogen supply solenoid valve 140 . The hydrogen supply solenoid valve 140 is used to enable the buffer tank 130 to supply hydrogen to the fuel cell 160 .

[0031] In addition, the first hydrogen storage bottle 110 and the second hydrogen storage bottle 120 each include a liquid level gauge 131, a pressure sensor 132, and a safety valve 133. The liquid level gauge 131 is used to detect the liquid level in the corresponding hydrogen storage bottle; the pressure sensor 132 is used to detect the hydrogen pressure in the corresponding hydrogen storage bottle; and the safety valve 133 is used to open and release the hydrogen in the corresponding hydrogen storage bottle when the hydrogen pressure in the corresponding hydrogen storage bottle is greater than or equal to a preset safety value. Furthermore, the first hydrogen storage bottle 110 is connected to the buffer tank 130 via a first economic regulating valve 113, and the second hydrogen storage bottle 120 is connected to the buffer tank 130 via a second economic regulating valve 123. The first and second economic regulating valves 113, 123 are used to adjust the hydrogen flow rate from the corresponding hydrogen storage bottle to the buffer tank 130.

[0032] During the hydrogenation process of the fuel cell hydrogen supply system, the liquid level of the hydrogen storage bottle can be observed in real time to determine whether the filling of liquid hydrogen is complete. At the beginning of hydrogenation, the vehicle's hydrogen system controller can be awakened. The hydrogen system controller determines whether the hydrogen storage bottle with the highest liquid level has been filled. If not, the first liquid inlet solenoid valve 111 and the second liquid inlet solenoid valve 121 are opened. If it is detected that the hydrogen storage bottle with the highest liquid level has been filled, the hydrogen system controller determines whether all hydrogen storage bottles have been filled. If not, the hydrogen system controller closes the liquid filling solenoid valves corresponding to the hydrogen storage bottles to which filling is completed. After the hydrogen system controller detects that all hydrogen bottles have been filled, the hydrogen system controller feeds back a filling completion signal to the hydrogen filling station to stop the filling.

[0033] In a possible embodiment, when the number of hydrogen storage bottles included in the fuel cell hydrogen supply system exceeds two, Figure 1 A corresponding number of hydrogen storage bottles are added to the fuel cell hydrogen supply system shown. The connection relationship of the added hydrogen storage bottles is the same as that of the first hydrogen storage bottle and the second hydrogen storage bottle, and will not be repeated here.

[0034] Figure 2 FIG. 1 is a flow chart showing a method for supplying hydrogen to a fuel cell according to an exemplary embodiment. Figure 2 As shown, the method can be applied to a fuel cell hydrogen supply system comprising multiple hydrogen storage bottles, and the method comprises the following steps: In step S21 , when the vehicle is in the fuel cell hydrogen supply mode, the target power of the fuel cell hydrogen supply system is obtained.

[0035] For example, when the vehicle is in the fuel cell hydrogen supply mode, the target power of the fuel cell hydrogen supply system can be determined according to the vehicle operating conditions (such as pedal opening, current vehicle speed, fuel cell system status, etc.). The present disclosure does not limit the method of determining the target power.

[0036] In step S22, the liquid level values ​​of multiple hydrogen storage bottles in the fuel cell hydrogen supply system are acquired in real time to obtain multiple liquid level values.

[0037] In step S23, the hydrogen supply and storage bottles of the fuel cell hydrogen supply system are determined according to the liquid level values ​​of the multiple hydrogen storage bottles.

[0038] For example, when the vehicle is in the fuel cell hydrogen supply mode, weather factors may cause inconsistent heat exchange rates among multiple hydrogen storage bottles, resulting in inconsistent hydrogen bottle pressures in each hydrogen storage bottle, and ultimately evolving into inconsistent liquid hydrogen levels in each hydrogen storage bottle. However, during continued operation after the liquid levels of the hydrogen storage bottles become inconsistent, some hydrogen storage bottles may contain liquid hydrogen while others may not, thereby affecting the high-power operation of the fuel cell. Therefore, the hydrogen supply storage bottles of the fuel cell hydrogen supply system can be determined based on the liquid level values ​​of the multiple hydrogen storage bottles, and hydrogen can be supplied through different hydrogen storage bottles under different liquid level conditions to keep the liquid level values ​​of the multiple hydrogen storage bottles in a balanced state, thereby avoiding the situation where the liquid level value of any hydrogen storage bottle decreases and hydrogen supply stops, causing insufficient fuel cell output power.

[0039] In step S24, hydrogen is supplied to the vehicle through the target power and the hydrogen supply and storage bottle.

[0040] Exemplarily, the hydrogen supply and storage bottle is used to supply hydrogen to the fuel cell. When hydrogen is supplied through the target power and the hydrogen supply and storage bottle, the opening of the hydrogen supply solenoid valve of each hydrogen supply and storage bottle can be adjusted according to the size of the target power. For example, when the number of the hydrogen supply and storage bottles is 3 and the rated power of each hydrogen supply and storage bottle is 100kW, if the target power is 150kW, in order to make the liquid level values ​​of the three hydrogen supply and storage bottles in a balanced state, hydrogen can be supplied simultaneously through the three hydrogen supply and storage bottles, and the hydrogen supply power of each hydrogen supply and storage bottle is 50KW. After determining the hydrogen supply power of each hydrogen storage bottle, the opening of the corresponding hydrogen supply solenoid valve can be determined according to the hydrogen supply power of each hydrogen supply and storage bottle.

[0041] Through the above technical solution, when a vehicle is in fuel cell hydrogen supply mode, the target power of the fuel cell hydrogen supply system is obtained; the liquid level values ​​of multiple hydrogen storage bottles in the fuel cell hydrogen supply system are obtained in real time to obtain multiple liquid level values; the hydrogen supply and storage bottle of the fuel cell hydrogen supply system is determined based on the liquid level values ​​of the multiple hydrogen storage bottles; and hydrogen is supplied to the vehicle using the target power and the hydrogen supply and storage bottle. Determining the hydrogen supply and storage bottle based on the liquid level values ​​of each hydrogen supply bottle can maintain liquid level balance among the multiple hydrogen storage bottles, thereby ensuring high-power operation of the fuel cell.

[0042] Figure 3 FIG. 1 is a flow chart showing a method for supplying hydrogen to a fuel cell according to an exemplary embodiment. Figure 3 As shown, step S23 includes: In step S231, the hydrogen supply and storage bottle is determined according to at least one of the multiple liquid level values, the maximum value among the multiple liquid level values, the minimum value among the multiple liquid level values, and the target power.

[0043] Illustratively, in a fuel cell hydrogen supply system comprising multiple hydrogen storage bottles, in order to ensure that the liquid level values ​​of the multiple hydrogen storage bottles are in a relatively balanced state and the maximum power provided by the multiple hydrogen storage bottles can meet the target power, the hydrogen supply storage bottle can be determined based on at least one of the multiple liquid level values, the maximum value among the multiple liquid level values, the minimum value among the multiple liquid level values ​​and the target power.

[0044] Among them, whether the liquid level values ​​of the multiple hydrogen storage bottles are in a balanced state can be determined based on the variance of the multiple liquid level values. When it is determined by the variance that the liquid level values ​​of the multiple hydrogen storage bottles are in a balanced state, all of the multiple hydrogen storage bottles are hydrogen supply storage bottles; when it is determined by the variance that the liquid level values ​​of the multiple hydrogen storage bottles are in an unbalanced state, the hydrogen storage bottle with a liquid level value greater than the average of the multiple liquid level values ​​can be used as the hydrogen supply storage bottle.

[0045] Alternatively, the difference between the maximum value and the minimum value can be used to determine whether the multiple hydrogen storage bottles are in a liquid level equilibrium state. When the liquid level values ​​of the multiple hydrogen storage bottles are in a balanced state, all of the multiple hydrogen storage bottles are hydrogen supply storage bottles. When the multiple hydrogen storage bottles are in an unbalanced state, the hydrogen storage bottles other than those with the minimum liquid level value can be used as hydrogen supply storage bottles.

[0046] Alternatively, the hydrogen supply and storage bottles can be determined based on the multiple liquid level values ​​and the target power. When the target power is determined, the number of hydrogen storage bottles that meet the target power is determined. When the number of hydrogen storage bottles is determined, the same number of hydrogen storage bottles are selected as hydrogen supply and storage bottles according to the order of the multiple liquid level values ​​from high to low.

[0047] Figure 4 FIG. 1 is a flow chart showing a method for supplying hydrogen to a fuel cell according to an exemplary embodiment. Figure 4 As shown, step S231 includes: In step S2311, the number of hydrogen storage bottles whose liquid level values ​​are greater than a first liquid level threshold value among the multiple hydrogen storage bottles is determined.

[0048] Optionally, when the liquid level value of the first hydrogen storage bottle is less than or equal to a first liquid level threshold, the first hydrogen storage bottle is controlled to stop supplying hydrogen, wherein the first hydrogen storage bottle is any hydrogen storage bottle among the hydrogen supply storage bottles.

[0049] Exemplarily, the first liquid level threshold is the minimum hydrogen supply threshold corresponding to each hydrogen storage bottle. When the liquid level value of any hydrogen storage bottle is less than or equal to the first liquid level threshold, it can be confirmed that the hydrogen storage bottle does not meet the hydrogen supply conditions, and the hydrogen supply solenoid valve corresponding to the hydrogen storage bottle can be closed to stop the hydrogen supply of the hydrogen storage bottle.

[0050] In addition, when only one of the liquid level values ​​of the multiple hydrogen storage bottles has a liquid level value greater than the first liquid level threshold (that is, only one of the multiple hydrogen bottles has remaining liquid hydrogen that can be used for hydrogen supply), there is no need to consider the balance problem of the liquid level values ​​of the multiple hydrogen storage bottles, and hydrogen can only be supplied through the hydrogen storage bottle whose liquid level value is greater than the first liquid level threshold.

[0051] Therefore, when considering the balance problem of the liquid level values ​​of multiple hydrogen storage bottles, the liquid level values ​​of at least two hydrogen storage bottles in the fuel cell hydrogen supply system whose liquid level values ​​are greater than the first liquid level threshold should be obtained in real time.

[0052] In step S2312, when the number of the hydrogen storage bottles is at least two, the difference between the maximum value and the minimum liquid level value among the liquid level values ​​of the at least two hydrogen storage bottles is determined.

[0053] In step S2313, when the difference is less than or equal to the second liquid level threshold, the at least two hydrogen storage bottles are determined to be the hydrogen supply storage bottles.

[0054] In step S2314, when the difference is greater than the second liquid level threshold, the hydrogen supply and storage bottle is determined according to the target power.

[0055] For example, the difference between the maximum value and the minimum liquid level value in the at least two hydrogen storage bottles can be used to determine whether the liquid levels of the at least two hydrogen storage bottles are in a balanced state; when the difference is less than or equal to the second liquid level threshold, it is determined that the liquid levels of the at least two hydrogen storage bottles are in a balanced state, and it can be determined that the at least two hydrogen storage bottles are both hydrogen supply storage bottles; when the difference is greater than the second liquid level threshold, it can be determined that the liquid levels of the at least two hydrogen storage bottles are in an unbalanced state, in which case the hydrogen supply storage bottle can be determined based on the target power. The second liquid level threshold is a preset value set by the vehicle manufacturer based on experience, and its size is not limited in this disclosure.

[0056] In addition, the standard deviation / variance of the liquid level values ​​of the at least two hydrogen storage bottles can also reflect the state of the liquid level values ​​in the at least two hydrogen storage bottles to determine whether the liquid level values ​​of the at least two hydrogen storage bottles are in a balanced state; for example, when the variance of the liquid level values ​​of the at least two hydrogen storage bottles is less than or equal to the variance threshold, it is determined that the liquid level values ​​of the at least two hydrogen storage bottles are in a balanced state, and it can be determined that the at least two hydrogen storage bottles are both hydrogen supply storage bottles; when the variance is greater than the variance threshold, it can be determined that the liquid level values ​​of the at least two hydrogen storage bottles are in a non-balanced state, and at this time, the hydrogen supply storage bottle can be determined according to the target power.

[0057] Figure 5 FIG. 1 is a flow chart showing a method for supplying hydrogen to a fuel cell according to an exemplary embodiment. Figure 5 As shown, step S2314 includes: In step S23141, when the target power is greater than or equal to the power threshold, the at least two hydrogen storage bottles are determined to be the hydrogen supply storage bottles.

[0058] In step S23142, when the target power is less than the power threshold, the hydrogen supply storage bottle is determined based on the target power and the liquid level values ​​of the at least two hydrogen storage bottles.

[0059] Optionally, the power threshold is determined by the number of the at least two hydrogen storage bottles and the rated power of each hydrogen storage bottle.

[0060] Exemplarily, the maximum power that a fuel cell can provide can be determined by the number of hydrogen supply storage bottles and the rated power of each hydrogen supply storage bottle. Therefore, the power threshold can be determined based on the number of the at least two hydrogen storage bottles and the rated power of each hydrogen storage bottle. For example, the maximum power that the fuel cell can provide can be the sum of the rated power of each of the at least two hydrogen storage bottles. It can be seen that when the target power is greater than or equal to the power threshold, the at least two hydrogen storage bottles must be hydrogen supply storage bottles to ensure that the fuel cell operates at the target power. When the target power is less than the power threshold, one or more hydrogen storage bottles that meet the target power can be determined from the at least two hydrogen storage bottles as hydrogen supply storage bottles, so that the fuel cell can operate at the target power.

[0061] Figure 6 FIG. 1 is a flow chart showing a method for supplying hydrogen to a fuel cell according to an exemplary embodiment. Figure 6 As shown, step S23142 includes: In step S231421, the number N of hydrogen supply and storage bottles is determined according to the target power.

[0062] In step S231422, N hydrogen storage bottles with liquid level values ​​from high to low among the at least two hydrogen storage bottles are determined as the hydrogen supply storage bottles; wherein N is less than or equal to the number of the at least two hydrogen storage bottles.

[0063] For example, when the hydrogen supply storage bottle is determined according to the target power and the liquid level values ​​of the at least two hydrogen storage bottles, the number of the hydrogen supply storage bottles can be determined according to the target power. For example, in the fuel cell system, the number of the multiple hydrogen storage bottles is 5, and the rated power of each hydrogen storage bottle is 60KW, wherein the number of at least two hydrogen storage bottles greater than the first liquid level threshold is 4. At this time, the maximum power that the fuel cell can provide is 60×4=240KW. When the target power is 150kW, The quotient of dividing the target power (150kW) by the rated power (60kW) of each hydrogen storage bottle is rounded up as the number N (N=3) of the hydrogen supply storage bottles. At this time, the three hydrogen storage bottles with the highest to lowest liquid level values ​​among the at least two hydrogen storage bottles can be used as hydrogen supply storage bottles. According to the target power of 150kW, the hydrogen supply power of each of the three hydrogen supply storage bottles should be 50kW. At this time, the opening of the corresponding hydrogen supply solenoid valve can be determined according to the hydrogen supply power of each hydrogen supply storage bottle.

[0064] Optionally, in a possible embodiment, in order to avoid a large imbalance between the liquid level value in the hydrogen supply and storage bottle and other liquid level values ​​due to a rapid drop, step S23142 further includes: When the target power is less than or equal to a second power threshold, determining at least one hydrogen storage bottle among the at least two hydrogen storage bottles whose difference between the liquid level value and the maximum liquid level value is less than the second liquid level threshold; and determining the at least one hydrogen storage bottle as the hydrogen supply storage bottle; wherein the second power threshold is less than the power threshold; When the target power is greater than the second power threshold and less than the power threshold, the number N of the hydrogen supply and hydrogen storage bottles is determined according to the target power; and the N hydrogen storage bottles with the highest to lowest liquid level values ​​among the at least two hydrogen storage bottles are determined as the hydrogen supply and hydrogen storage bottles; wherein N is less than or equal to the number of the at least two hydrogen storage bottles; The second power threshold is determined by the number of the at least one hydrogen storage bottle and the rated power of each hydrogen storage bottle.

[0065] Exemplarily, there may be at least one of the at least two liquid level values ​​whose difference with the maximum value is less than the second liquid level threshold. In this case, the liquid level value of the at least one hydrogen storage bottle can be regarded as being in a balanced state. Therefore, the second power threshold can be determined according to the number of the at least one hydrogen storage bottle. For example, when the number of the at least two hydrogen storage bottles is 5 and the rated power of each hydrogen storage bottle is 60kW, the liquid level values ​​are 10L, 9L, 8.5L, 7L and 6L respectively. When the second liquid level threshold is 2, the differences between 10L, 9L, 8.5L and the maximum value 10L are all less than the second liquid level threshold (2). In this case, Assuming that the 10L, 9L, and 8.5L hydrogen storage bottles are in a balanced state, in order to maintain the balanced position of the 10L, 9L, and 8.5L hydrogen storage bottles, the maximum power (60×3=180kW) provided by the 10L, 9L, and 8.5L hydrogen storage bottles can be used as the second power threshold. When the target power is less than or equal to the second power threshold, the 10L, 9L, and 8.5L hydrogen storage bottles are used as the hydrogen supply bottles. When the target power is greater than the second power threshold but less than the power threshold, the hydrogen supply bottle can be determined through the above steps S231421 and S231422, which are not repeated here. Optionally, when the hydrogen supply time of the hydrogen supply bottle reaches a preset time, the method of determining the number of hydrogen storage bottles with a liquid level value greater than the first liquid level threshold is performed.

[0066] Exemplarily, in order to avoid the problem of increased system load due to frequent switching of hydrogen supply storage bottles caused by a small difference in the liquid level values ​​between the hydrogen supply storage bottle and the non-hydrogen supply bottle, after the hydrogen supply storage bottle is determined and the hydrogen supply time of the hydrogen supply storage bottle reaches the preset time, the above step S2311 can be restarted, and this disclosure will not go into details.

[0067] Furthermore, in one possible embodiment, Figure 1 Taking the fuel cell hydrogen supply system shown as an example, when the liquid level values ​​of the first hydrogen storage bottle 110 and the second hydrogen storage bottle 120 are both greater than the first liquid level threshold, and the difference between the liquid levels of the first hydrogen storage bottle 110 and the second hydrogen storage bottle 120 is less than or equal to the second liquid level threshold, the first liquid outlet solenoid valve 112 and the second liquid outlet solenoid valve 122 can be controlled to open, and the first hydrogen storage bottle 110 and the second hydrogen storage bottle 120 are both hydrogen supply bottles, supplying hydrogen to the fuel cell 160.

[0068] When the liquid level values ​​of the first hydrogen storage bottle 110 and the second hydrogen storage bottle 120 are both greater than the first liquid level threshold, and the difference between the liquid levels of the first hydrogen storage bottle 110 and the second hydrogen storage bottle 120 is greater than the second liquid level threshold, if the target power of the fuel cell is greater than or equal to the power threshold, the first liquid outlet solenoid valve 112 and the second liquid outlet solenoid valve 122 can be controlled to open, and the first hydrogen storage bottle 110 and the second hydrogen storage bottle 120 are both hydrogen supply bottles, supplying hydrogen to the fuel cell 160; if the fuel When the target power of the battery is less than the power threshold, the first liquid outlet solenoid valve 112 can be controlled to open and the second liquid outlet solenoid valve 122 can be closed, and the first hydrogen storage bottle 110 is the hydrogen supply storage bottle; wherein, the power threshold = fuel cell rated power / 2, the liquid level value of the first hydrogen storage bottle 110 is the maximum value of the liquid level values ​​of the first hydrogen storage bottle 110 and the second hydrogen storage bottle 120, and the liquid level value of the second hydrogen storage bottle 120 is the minimum value of the liquid level values ​​of the first hydrogen storage bottle 110 and the second hydrogen storage bottle 120.

[0069] Through the above technical solution, when a vehicle is in fuel cell hydrogen supply mode, the target power of the fuel cell hydrogen supply system is obtained; the liquid level values ​​of multiple hydrogen storage bottles in the fuel cell hydrogen supply system are obtained in real time to obtain multiple liquid level values; the hydrogen supply and storage bottle of the fuel cell hydrogen supply system is determined based on the liquid level values ​​of the multiple hydrogen storage bottles; and hydrogen is supplied to the vehicle using the target power and the hydrogen supply and storage bottle. Determining the hydrogen supply and storage bottle based on the liquid level values ​​of each hydrogen supply bottle can maintain liquid level balance among the multiple hydrogen storage bottles, thereby ensuring high-power operation of the fuel cell.

[0070] Figure 7 is a schematic diagram of a fuel cell hydrogen supply device 700 according to an exemplary embodiment. Figure 7 As shown, the device 700 is applied to a fuel cell hydrogen supply system, and the device 700 includes: a first acquisition module 710, a second acquisition module 720, a determination module 730 and a control module 740; The first acquisition module 710 is configured to acquire a target power of the fuel cell hydrogen supply system when the vehicle is in the fuel cell hydrogen supply mode; The second acquisition module 720 is used to obtain the liquid level values ​​of multiple hydrogen storage bottles in the fuel cell hydrogen supply system in real time to obtain multiple liquid level values; The determination module 730 is used to determine the hydrogen supply and storage bottles of the fuel cell hydrogen supply system according to the liquid level values ​​of the multiple hydrogen storage bottles; The control module 740 is used to supply hydrogen to the vehicle through the target power and the hydrogen supply and storage bottle.

[0071] Optionally, the determination module 730 is used to determine the hydrogen supply and storage bottle based on at least one of the multiple liquid level values, the maximum value among the multiple liquid level values, the minimum value among the multiple liquid level values ​​and the target power.

[0072] Optionally, the determination module 730 includes: a first determination submodule, a second determination submodule, a first judgment submodule, and a second judgment submodule; The first determining submodule is configured to determine the number of hydrogen storage bottles whose liquid levels are greater than a first liquid level threshold value among the plurality of hydrogen storage bottles; The second determining submodule determines a difference between the maximum value and the minimum liquid level value among the liquid level values ​​of the at least two hydrogen storage bottles when the number of the hydrogen storage bottles is at least two.

[0073] The first judgment submodule is configured to determine that the at least two hydrogen storage bottles are the hydrogen supply storage bottles when the difference is less than or equal to a second liquid level threshold; The second judgment submodule is used to determine the hydrogen supply and storage bottle according to the target power when the difference is greater than the second liquid level threshold.

[0074] Optionally, the second judgment submodule is further configured to: When the target power is greater than or equal to a power threshold, determining the at least two hydrogen storage bottles as the hydrogen supply storage bottles; When the target power is less than the power threshold, the hydrogen supply storage bottle is determined according to the target power and the liquid level values ​​of the at least two hydrogen storage bottles.

[0075] Optionally, the power threshold is determined by the number of the at least two hydrogen storage bottles and the rated power of each hydrogen storage bottle.

[0076] Optionally, the second judgment submodule is further configured to: Determine the number N of hydrogen supply and storage bottles according to the target power; The N hydrogen storage bottles with the highest to lowest liquid level values ​​among the at least two hydrogen storage bottles are determined as the hydrogen supply storage bottles; wherein N is less than or equal to the number of the at least two hydrogen storage bottles.

[0077] Optionally, the control module 740 is configured to determine the number of hydrogen storage bottles having liquid level values ​​greater than a first liquid level threshold among the multiple hydrogen storage bottles when the hydrogen supply time of the hydrogen supply and storage bottle reaches a preset time.

[0078] Optionally, the control module 740 is used to control the first hydrogen storage bottle to stop supplying hydrogen when the liquid level value of the first hydrogen storage bottle is less than or equal to a first liquid level threshold, wherein the first hydrogen storage bottle is any hydrogen storage bottle among the hydrogen supply storage bottles.

[0079] Regarding the apparatus in the above embodiment, the specific manner in which each module performs operations has been described in detail in the embodiment of the method, and will not be elaborated here.

[0080] Through the above technical solution, when a vehicle is in fuel cell hydrogen supply mode, the target power of the fuel cell hydrogen supply system is obtained; the liquid level values ​​of multiple hydrogen storage bottles in the fuel cell hydrogen supply system are obtained in real time to obtain multiple liquid level values; the hydrogen supply and storage bottle of the fuel cell hydrogen supply system is determined based on the liquid level values ​​of the multiple hydrogen storage bottles; and hydrogen is supplied to the vehicle using the target power and the hydrogen supply and storage bottle. Determining the hydrogen supply and storage bottle based on the liquid level values ​​of each hydrogen supply bottle can maintain liquid level balance among the multiple hydrogen storage bottles, thereby ensuring high-power operation of the fuel cell.

[0081] Figure 8 FIG. 8 is a schematic diagram of an electronic device 800 according to an exemplary embodiment. Figure 8 As shown, the electronic device 800 may include: a processor 801 , a memory 802 , and may further include one or more of a multimedia component 803 , an input / output (I / O) interface 804 , and a communication component 805 .

[0082] The processor 801 is used to control the overall operation of the electronic device 800 to complete all or part of the steps in the above-mentioned fuel cell hydrogen supply method. The memory 802 is used to store various types of data to support the operation of the electronic device 800. This data may include, for example, instructions for any application or method operating on the electronic device 800, as well as application-related data such as contact information, sent and received messages, images, audio, video, etc. The memory 802 can be implemented by any type of volatile or non-volatile storage device, or a combination thereof, such as static random access memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic storage, flash memory, magnetic disk, or optical disk. The multimedia component 803 may include a screen and an audio component. The screen may be, for example, a touch screen, and the audio component is used to output and / or input audio signals. For example, the audio component may include a microphone for receiving external audio signals. The received audio signal may be further stored in the memory 802 or sent through the communication component 805. The audio component also includes at least two speakers for outputting audio signals. The I / O interface 804 provides an interface between the processor 801 and other interface modules. The above-mentioned other interface modules may be a keyboard, a mouse, buttons, etc. These buttons may be virtual buttons or physical buttons. The communication component 805 is used for wired or wireless communication between the electronic device 800 and other devices. Wireless communication, such as Wi-Fi, Bluetooth, Near Field Communication (NFC), 2G, 3G or 4G, or a combination of one or more of them, so the corresponding communication component 805 may include: a Wi-Fi module, a Bluetooth module, an NFC module.

[0083] In an exemplary embodiment, the electronic device 800 can be implemented by one or more application-specific integrated circuits (ASICs), digital signal processors (DSPs), digital signal processing devices (DSPDs), programmable logic devices (PLDs), field programmable gate arrays (FPGAs), controllers, microcontrollers, microprocessors, or other electronic components to perform the above-mentioned fuel cell hydrogen supply method.

[0084] In another exemplary embodiment, a computer-readable storage medium including program instructions is also provided. When executed by a processor, the program instructions implement the steps of the above-described fuel cell hydrogen supply method. For example, the computer-readable storage medium may be the aforementioned memory 802 including the program instructions. The program instructions may be executed by the processor 801 of the electronic device 800 to implement the above-described fuel cell hydrogen supply method.

[0085] In another exemplary embodiment, a computer program product is further provided. The computer program product includes a computer program that can be executed by a processor. When the computer program is executed by the processor, the steps of the above-mentioned fuel cell hydrogen supply method are implemented.

[0086] In another exemplary embodiment, a vehicle is further provided. The vehicle includes the fuel cell hydrogen supply device 700 provided in the above embodiment.

[0087] The preferred embodiments of the present disclosure are described in detail above in conjunction with the accompanying drawings. However, the present disclosure is not limited to the specific details of the above embodiments. Within the technical concept of the present disclosure, various simple modifications can be made to the technical solutions of the present disclosure, and these simple modifications all fall within the scope of protection of the present disclosure.

[0088] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any appropriate manner without contradiction. In order to avoid unnecessary repetition, the present disclosure will not further describe various possible combinations.

[0089] In addition, the various embodiments of the present disclosure may be arbitrarily combined, and as long as they do not violate the concept of the present disclosure, they should also be regarded as the contents disclosed by the present disclosure.

Claims

1. A method for supplying hydrogen to a fuel cell, characterized in that: Applied to a fuel cell hydrogen supply system, the method comprises: When the vehicle is in a fuel cell hydrogen supply mode, obtaining a target power of the fuel cell hydrogen supply system; Real-time acquisition of liquid level values ​​of multiple hydrogen storage bottles in the fuel cell hydrogen supply system to obtain multiple liquid level values; Determining the hydrogen supply and storage bottles of the fuel cell hydrogen supply system according to the liquid level values ​​of the multiple hydrogen storage bottles; The vehicle is supplied with hydrogen through the target power and the hydrogen supply and storage bottle.

2. The method according to claim 1, characterized in that The method of determining the hydrogen supply and storage bottles of the fuel cell hydrogen supply system according to the liquid level values ​​of the plurality of hydrogen storage bottles comprises: The hydrogen supply and storage bottle is determined according to at least one of the multiple liquid level values, the maximum value among the multiple liquid level values, the minimum value among the multiple liquid level values, and the target power.

3. The method according to claim 2, characterized in that The determining the hydrogen supply and storage bottle according to at least one of the multiple liquid level values, the maximum value among the multiple liquid level values, the minimum value among the multiple liquid level values, and the target power includes: Determining the number of hydrogen storage bottles whose liquid level values ​​are greater than a first liquid level threshold value among the plurality of hydrogen storage bottles; When the number of the hydrogen storage bottles is at least two, determining a difference between the maximum value and a minimum liquid level value among the liquid level values ​​of the at least two hydrogen storage bottles; When the difference is less than or equal to a second liquid level threshold, determining that the at least two hydrogen storage bottles are the hydrogen supply storage bottles; When the difference is greater than the second liquid level threshold, the hydrogen supply and storage bottle is determined according to the target power.

4. The method according to claim 3, characterized in that The step of determining the hydrogen supply and storage bottle according to the target power includes: When the target power is greater than or equal to a power threshold, determining the at least two hydrogen storage bottles as the hydrogen supply storage bottles; When the target power is less than the power threshold, the hydrogen supply storage bottle is determined according to the target power and the liquid level values ​​of the at least two hydrogen storage bottles.

5. The method according to claim 4, characterized in that The power threshold is determined by the number of the at least two hydrogen storage bottles and the rated power of each hydrogen storage bottle.

6. The method according to claim 4, characterized in that The step of determining the hydrogen supply and storage bottle according to the target power and the liquid level values ​​of the at least two hydrogen storage bottles includes: Determine the number N of the hydrogen supply and storage bottles according to the target power; The N hydrogen storage bottles with the highest to lowest liquid level values ​​among the at least two hydrogen storage bottles are determined as the hydrogen supply storage bottles; wherein N is less than or equal to the number of the at least two hydrogen storage bottles.

7. The method according to any one of claims 3 to 6, characterized in that The method further comprises: When the hydrogen supply time of the hydrogen supply and storage bottles reaches a preset time, the step of determining the number of hydrogen storage bottles whose liquid level values ​​among the multiple hydrogen storage bottles are greater than a first liquid level threshold is executed.

8. The method according to any one of claims 1 to 6, characterized in that The method further comprises: When the liquid level value of the first hydrogen storage bottle is less than or equal to the first liquid level threshold, the first hydrogen storage bottle is controlled to stop supplying hydrogen, wherein the first hydrogen storage bottle is any one of the hydrogen supply and hydrogen storage bottles.

9. A fuel cell hydrogen supply system, characterized in that: The system is used to perform the method according to any one of claims 1 to 8, and the system comprises: a plurality of hydrogen storage bottles, a buffer tank, a hydrogen supply solenoid valve, a hydrogen filling port, and a fuel cell; The hydrogen filling port is connected to a plurality of hydrogen storage bottles respectively, and a corresponding liquid inlet solenoid valve is provided between the hydrogen filling port and any of the hydrogen storage bottles, and the liquid inlet solenoid valve is used to control the hydrogenation of the corresponding hydrogen storage bottle; Each hydrogen storage bottle is connected to the buffer tank via a corresponding liquid outlet solenoid valve, and the liquid outlet solenoid valve is used to open the liquid outlet solenoid valve when the corresponding hydrogen storage bottle is a hydrogen supplying bottle, so that the hydrogen storage bottle supplies hydrogen to the buffer tank; and close the liquid outlet solenoid valve when the corresponding hydrogen storage bottle is not a hydrogen supplying bottle, so that the hydrogen storage bottle stops supplying hydrogen to the buffer tank; The buffer tank is connected to the fuel cell through the hydrogen supply solenoid valve, and the hydrogen supply solenoid valve is used to enable the buffer tank to supply hydrogen to the fuel cell.

10. A fuel cell hydrogen supply device, characterized in that: Applied to a fuel cell hydrogen supply system, the device comprises: A first acquisition module is used to acquire a target power of the fuel cell hydrogen supply system when the vehicle is in a fuel cell hydrogen supply mode; A second acquisition module is used to obtain liquid level values ​​of multiple hydrogen storage bottles in the fuel cell hydrogen supply system in real time to obtain multiple liquid level values; a determination module, configured to determine the hydrogen supply and storage bottles of the fuel cell hydrogen supply system according to the liquid level values ​​of the plurality of hydrogen storage bottles; A control module is used to supply hydrogen to the vehicle through the target power and the hydrogen supply and storage bottle.

11. A vehicle, characterized in that: include: The fuel cell hydrogen supply device according to claim 10.

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