A method and system for replenishing hydrogen at a liquid hydrogen refueling station

Abstract

The present invention provides a hydrogen replenishment method and system for a liquid hydrogen refueling station. The method includes: constructing and training a hydrogen demand prediction model; in response to receiving a hydrogen replenishment signal from a liquid hydrogen refueling station, determining the liquid hydrogen replenishment amount of the liquid hydrogen tank truck by communicating and interacting with the liquid hydrogen tank truck, and determining the hydrogen replenishment operation period according to the liquid hydrogen replenishment amount; using the hydrogen demand prediction model to predict the first hydrogen demand of the liquid hydrogen refueling station during the hydrogen replenishment operation period, and determining the hydrogen storage amount of the hydrogen cylinder group at the starting time of the hydrogen replenishment operation period; comparing the hydrogen storage amount with the first hydrogen demand, determining a control scheme for the liquid hydrogen storage tank based on the comparison result, and regulating the liquid hydrogen storage tank based on the control scheme to adapt to the liquid hydrogen tank truck filling liquid hydrogen into the liquid hydrogen storage tank. The scheme of the present invention not only ensures the operational safety of the liquid hydrogen refueling station during the hydrogen replenishment operation, but also ensures that the hydrogen supply to hydrogen fuel cell vehicles will not be affected during the hydrogen replenishment operation.

Description

Technical Field

[0001] The present invention relates to the technical field of liquid hydrogen safety management, and in particular to a hydrogen replenishment method, system, electronic equipment and computer storage medium for a liquid hydrogen refueling station. Background Art

[0002] A hydrogen fuel cell vehicle is a new energy vehicle that uses hydrogen as energy. The hydrogen fuel cell it is equipped with generates electricity through the chemical reaction of hydrogen and oxygen to drive the electric motor to propel the vehicle. Liquid hydrogen refueling stations use specially designed liquid hydrogen tank trucks to replenish hydrogen. Figure 1 As shown, the hydrogen replenishment process is generally as follows: the liquid hydrogen tank truck transports liquid hydrogen to the liquid hydrogen refueling station, connects to the liquid hydrogen storage tank in the liquid hydrogen refueling station and injects liquid hydrogen into the liquid hydrogen storage tank. The hydrogen in the liquid hydrogen storage tank enters the hydrogen storage bottle group after being pressurized by the liquid hydrogen pump and gasified by the vaporizer. When the hydrogen fuel cell vehicle needs to be refueled, the hydrogen refueling machine can take gas from the hydrogen storage bottle group for refueling.

[0003] To ensure hydrogen refueling safety, when a liquid hydrogen tank truck is refueling a liquid hydrogen storage tank, the gas outlet of the liquid hydrogen storage tank needs to be closed through a control valve, and the liquid hydrogen pump cannot obtain liquid hydrogen from the liquid hydrogen storage tank. Although the design of the liquid hydrogen refueling station takes into account the needs of fast and efficient operation, it still takes a long time for a liquid hydrogen tank truck to refuel a liquid hydrogen storage tank. If the gaseous hydrogen in the hydrogen storage bottle group is sold out during this hydrogen refueling stage, it will affect the subsequent hydrogen refueling needs of hydrogen fuel cell vehicles.

[0004] Therefore, how to ensure that the impact on the normal hydrogen refueling operation of hydrogen fuel cell vehicles is reduced when refueling hydrogen at liquid hydrogen refueling stations is a technical problem that needs to be solved at present. Summary of the invention

[0005] In order to solve the technical problems existing in the above-mentioned background technology, the present invention provides a hydrogen replenishment method, system, electronic equipment, computer storage medium and computer program product for a liquid hydrogen refueling station.

[0006] The present invention provides a hydrogen replenishment method for a liquid hydrogen refueling station, which is applied to a control device of the liquid hydrogen refueling station. The method comprises the following steps:

[0007] Build and train a hydrogen demand prediction model;

[0008] In response to receiving a hydrogen replenishment signal from a liquid hydrogen refueling station, determining the amount of liquid hydrogen replenished by the liquid hydrogen tank truck by communicating and interacting with the liquid hydrogen tank truck, and determining a hydrogen replenishment operation period according to the amount of liquid hydrogen replenished;

[0009] Use the hydrogen demand prediction model to predict the first hydrogen demand of the liquid hydrogen refueling station during the hydrogen replenishment operation period, and determine the hydrogen storage capacity of the hydrogen cylinder group at the start time of the hydrogen replenishment operation period;

[0010] The hydrogen storage capacity and the first hydrogen demand are compared, a control scheme for the liquid hydrogen storage tank is determined based on the comparison result, and the liquid hydrogen storage tank is controlled based on the control scheme to accommodate the liquid hydrogen tank truck filling liquid hydrogen into the liquid hydrogen storage tank.

[0011] Preferably, the hydrogen replenishment signal of the liquid hydrogen refueling station is obtained by the following method, including:

[0012] The liquid hydrogen tank truck calculates the route distance to the liquid hydrogen refueling station and the number of other liquid hydrogen refueling stations located on the route before the liquid hydrogen refueling station, and sends the hydrogen replenishment signal to the liquid hydrogen refueling station when the route distance and the number of other liquid hydrogen refueling stations meet preset conditions.

[0013] Preferably, when the route distance and the number of other liquid hydrogen refueling stations meet preset conditions, sending the hydrogen replenishment signal to the liquid hydrogen refueling station includes:

[0014] Substitute the route distance and the number of other liquid hydrogen refueling stations into the following formula to calculate the equivalent remaining time:

[0015] ;

[0016] In the formula, is the equivalent remaining time; is the route distance, D is the distance base value, is the base time value corresponding to the route distance; n is the number of other liquid hydrogen refueling stations, is the base value of duration corresponding to the quantity; is the road condition coefficient;

[0017] In the equivalent remaining time When it is lower than the first threshold, it is determined that the preset condition is met, and the hydrogen replenishment signal is generated and sent to the liquid hydrogen refueling station.

[0018] Preferably, determining the control scheme of the liquid hydrogen storage tank based on the comparison result includes:

[0019] If the hydrogen storage amount is higher than the first hydrogen demand amount, no control scheme for the liquid hydrogen storage tank is generated;

[0020] If the hydrogen storage amount is lower than the first hydrogen demand amount, a liquid hydrogen adjustment amount is determined according to a first difference between the hydrogen storage amount and the first hydrogen demand amount, and a first target electromagnetic control valve of the liquid hydrogen storage tank is determined according to the liquid hydrogen adjustment amount and its target state is determined to be a closed state;

[0021] Among them, a number of partitions are arranged in the middle of the liquid hydrogen storage tank, and the interior of the liquid hydrogen storage tank is divided into a plurality of chambers by the partitions, and an electromagnetic control valve is arranged on each of the partitions, and each of the electromagnetic control valves is in a normally open state; and, when the first target electromagnetic control valve is in a closed state, the interior of the liquid hydrogen storage tank is divided into a filling chamber for communicating with the liquid hydrogen tank truck and a retaining chamber for communicating with the liquid hydrogen pump.

[0022] Preferably, an auxiliary control device is arranged in the filling chamber, and the liquid hydrogen storage tank is controlled based on the control scheme, including:

[0023] The auxiliary control device is controlled to dispense the liquid hydrogen in the filling chamber into the retaining chamber by changing the inclination or pushing horizontally, and the first target electromagnetic control valve is controlled to switch to a closed state after the dispensing is completed.

[0024] Preferably, the regulating the liquid hydrogen storage tank based on the regulation scheme further includes:

[0025] In the process of the liquid hydrogen tank truck filling the liquid hydrogen storage tank with liquid hydrogen, the hydrogen demand prediction model is used to perform an update prediction to obtain a second hydrogen demand of the liquid hydrogen filling station during the hydrogen filling operation period;

[0026] If the second hydrogen demand is higher than the first hydrogen demand and the second difference between the two is higher than a second threshold, the second target electromagnetic control valve is first controlled to switch to a closed state, and then the first target electromagnetic control valve is controlled to switch to an open state, so as to dispense the liquid hydrogen in the filling chamber into the retention chamber; wherein the second target electromagnetic control valve is farther away from the filling chamber than the first target electromagnetic control valve;

[0027] After the adjustment is completed, the first target electromagnetic control valve is first controlled to switch to a closed state, and then the second target electromagnetic control valve is controlled to switch to an open state.

[0028] The present invention also provides a hydrogen replenishment system for a liquid hydrogen refueling station, which is applied to a control device of a liquid hydrogen refueling station, wherein the system includes a model building and training module, a first processing module, a second processing module, and a control module;

[0029] The model building and training module is used to build and train a hydrogen demand prediction model;

[0030] The first processing module is used for determining the amount of liquid hydrogen replenished by the liquid hydrogen tank truck by communicating and interacting with the liquid hydrogen tank truck in response to receiving a hydrogen replenishment signal from the liquid hydrogen refueling station, and determining a hydrogen replenishment operation period according to the liquid hydrogen replenishment amount;

[0031] The second processing module is used to use the hydrogen demand prediction model to predict the first hydrogen demand of the liquid hydrogen refueling station during the hydrogen replenishment operation period, and to determine the hydrogen storage capacity of the hydrogen cylinder group at the start time of the hydrogen replenishment operation period;

[0032] The control module is used to compare the hydrogen storage capacity and the first hydrogen demand, determine a control scheme for the liquid hydrogen storage tank based on the comparison result, and control the liquid hydrogen storage tank based on the control scheme to accommodate the liquid hydrogen tank truck filling liquid hydrogen into the liquid hydrogen storage tank.

[0033] The present invention also provides an electronic device, comprising: a memory storing executable program code; a processor coupled to the memory; the processor calls the executable program code stored in the memory to execute any of the methods described above.

[0034] The present invention also provides a computer storage medium, on which a computer program is stored. When the computer program is executed by a processor, any of the above methods is executed.

[0035] The present invention also provides a computer program product, wherein a computer program is stored in the computer program product, and when the computer program is executed, any of the above methods is implemented.

[0036] The beneficial effects of the present invention are:

[0037] The solution of the present invention not only ensures the operational safety of the liquid hydrogen refueling station during hydrogen refueling operations, but also ensures that the hydrogen supply to the hydrogen fuel cell vehicles is not affected during the hydrogen refueling operations, thereby enabling the hydrogen fuel cell vehicles to obtain a good hydrogen refueling experience and the liquid hydrogen refueling station to obtain higher economic benefits. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments are briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without creative work.

[0039] Figure 1 It is a schematic diagram of the hydrogen replenishment process of the liquid hydrogen refueling station disclosed in an embodiment of the present invention.

[0040] Figure 2 It is a schematic flow chart of a hydrogen replenishment method for a liquid hydrogen refueling station disclosed in an embodiment of the present invention.

[0041] Figure 3 It is a structural schematic diagram of a liquid hydrogen storage tank disclosed in an embodiment of the present invention.

[0042] Figure 4 It is another structural schematic diagram of the liquid hydrogen storage tank disclosed in an embodiment of the present invention.

[0043] Figure 5 It is a structural schematic diagram of a hydrogen replenishment system of a liquid hydrogen refueling station disclosed in an embodiment of the present invention. DETAILED DESCRIPTION

[0044] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0045] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0046] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0047] In the description of the present invention, it should be noted that if the terms "upper", "lower", "inside", "outside", etc. appear to indicate an orientation or position relationship, they are based on the orientation or position relationship shown in the accompanying drawings, or are the orientation or position relationship in which the product of the invention is usually placed when used. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0048] In addition, the terms “first”, “second”, etc., if used, are merely used to distinguish between the descriptions and should not be understood as indicating or implying relative importance.

[0049] It should be noted that, in the absence of conflict, the features in the embodiments of the present invention may be combined with each other.

[0050] like Figure 2 As shown, an embodiment of the present invention discloses a hydrogen replenishment method for a liquid hydrogen refueling station, which is applied to a control device of a liquid hydrogen refueling station. The method comprises the following steps:

[0051] Build and train a hydrogen demand prediction model;

[0052] In response to receiving a hydrogen replenishment signal from a liquid hydrogen refueling station, determining the amount of liquid hydrogen replenished by the liquid hydrogen tank truck by communicating and interacting with the liquid hydrogen tank truck, and determining a hydrogen replenishment operation period according to the amount of liquid hydrogen replenished;

[0053] Use the hydrogen demand prediction model to predict the first hydrogen demand of the liquid hydrogen refueling station during the hydrogen replenishment operation period, and determine the hydrogen storage capacity of the hydrogen cylinder group at the start time of the hydrogen replenishment operation period;

[0054] The hydrogen storage capacity and the first hydrogen demand are compared, a control scheme for the liquid hydrogen storage tank is determined based on the comparison result, and the liquid hydrogen storage tank is controlled based on the control scheme to accommodate the liquid hydrogen tank truck filling liquid hydrogen into the liquid hydrogen storage tank.

[0055] Liquid hydrogen refueling stations are equipped with control equipment specifically used to formulate control plans for liquid hydrogen storage tanks and liquid hydrogen pumps during the hydrogen replenishment stage. After receiving the hydrogen replenishment signal from the liquid hydrogen refueling station, the control equipment communicates and interacts with the liquid hydrogen tank truck to determine the amount of liquid hydrogen replenished by the liquid hydrogen tank truck at the liquid hydrogen refueling station. Since the hydrogen replenishment operation duration of the liquid hydrogen tank truck is mainly related to the amount of liquid hydrogen replenishment (the hydrogen replenishment preparation time such as on-site coordination and pipeline connection can be a fixed value, and the hydrogen replenishment rate is also basically a fixed value), the hydrogen replenishment operation duration of the liquid hydrogen tank truck at the liquid hydrogen refueling station can be determined based on the liquid hydrogen replenishment amount. In addition, the time when the liquid hydrogen tank truck arrives at the liquid hydrogen refueling station can be predicted based on the operating status of the liquid hydrogen tank truck, road conditions, etc., and the hydrogen replenishment operation period can be determined accordingly.

[0056] At the same time, the present invention also constructs and trains a hydrogen demand prediction model, which can predict the first hydrogen demand during the hydrogen replenishment operation period based on information related to the liquid hydrogen refueling station (mainly historical hydrogenation law data, and can also include the measured data of the day), that is, the amount of hydrogen that the liquid hydrogen refueling station needs to provide for hydrogen fuel cell vehicles during the hydrogen replenishment operation period. In addition, the hydrogen storage capacity of the hydrogen cylinder group at the start of the hydrogen replenishment operation period can be further determined by real-time analysis of the remaining hydrogen data of the hydrogen cylinder group. The hydrogen demand prediction model in the present invention is preferably constructed using an LSTM algorithm.

[0057] Finally, by comparing the hydrogen storage volume obtained above with the first hydrogen demand, the control scheme of the liquid hydrogen storage tank can be determined based on the comparison result, so that during the hydrogen replenishment operation period when the liquid hydrogen tank truck fills the liquid hydrogen storage tank with liquid hydrogen, the amount of hydrogen in the hydrogen storage bottle group can meet the demand of the hydrogen fuel cell vehicle during the hydrogen replenishment operation period. Therefore, the scheme of the present invention not only ensures the operational safety of the liquid hydrogen refueling station during the hydrogen replenishment operation, but also ensures that the hydrogen supply to the hydrogen fuel cell vehicle will not be affected during the hydrogen replenishment operation, so that the hydrogen fuel cell vehicle can obtain a good hydrogen refueling experience and the liquid hydrogen refueling station can obtain higher economic benefits.

[0058] Preferably, the hydrogen replenishment signal of the liquid hydrogen refueling station is obtained by the following method, including:

[0059] The liquid hydrogen tank truck calculates the route distance to the liquid hydrogen refueling station and the number of other liquid hydrogen refueling stations located on the route before the liquid hydrogen refueling station, and sends the hydrogen replenishment signal to the liquid hydrogen refueling station when the route distance and the number of other liquid hydrogen refueling stations meet preset conditions.

[0060] In an embodiment of the present invention, during the process of distributing liquid hydrogen, the liquid hydrogen tank truck determines whether to generate a hydrogen replenishment signal corresponding to each liquid hydrogen refueling station based on actual conditions, and sends the generated hydrogen replenishment signal to the corresponding liquid hydrogen refueling station. After the liquid hydrogen refueling station receives the hydrogen replenishment signal, it executes the above-mentioned scheme of the present invention, that is, determines the control scheme of the liquid hydrogen storage tank.

[0061] Specifically, the distribution route of the liquid hydrogen tank truck is preset, and the distribution route includes multiple liquid hydrogen refueling stations. The liquid hydrogen tank truck can calculate the route distance (non-straight-line distance) to the liquid hydrogen refueling station based on the real-time positioning information, and can determine how many other liquid hydrogen refueling stations there are in the middle of reaching the liquid hydrogen refueling station. When the route distance and the number of other liquid hydrogen refueling stations meet the preset conditions, the liquid hydrogen tank truck can generate and send a hydrogen refueling signal to the liquid hydrogen refueling station. With this setting, the liquid hydrogen refueling station can determine the hydrogen refueling plan for the liquid hydrogen tank truck, and then determine the timing to adjust the working status of the liquid hydrogen storage tank or liquid hydrogen pump.

[0062] Preferably, when the route distance and the number of other liquid hydrogen refueling stations meet preset conditions, sending the hydrogen replenishment signal to the liquid hydrogen refueling station includes:

[0063] Substitute the route distance and the number of other liquid hydrogen refueling stations into the following formula to calculate the equivalent remaining time:

[0064] ;

[0065] In the formula, is the equivalent remaining time; is the route distance, D is the distance base value, is the base time value corresponding to the route distance; n is the number of other liquid hydrogen refueling stations, is the base value of duration corresponding to the quantity; is the road condition coefficient;

[0066] In the equivalent remaining time When it is lower than the first threshold, it is determined that the preset condition is met, and the hydrogen replenishment signal is generated and sent to the liquid hydrogen refueling station.

[0067] In an embodiment of the present invention, referring to the above formula, the present invention calculates the remaining time for the liquid hydrogen tank truck to arrive at the liquid hydrogen refueling station, the time corresponding to the route distance factor and the time corresponding to the number of intermediate hydrogen refueling stations based on the above formula, and adds the two time lengths and further considers the road condition factor (the worse the road condition, the greater the road condition coefficient), and obtains the equivalent remaining time. The equivalent remaining time comprehensively represents the approximate time for the liquid hydrogen tank truck to arrive at the liquid hydrogen refueling station. By comparing the equivalent remaining time with the first threshold, it can be determined whether the liquid hydrogen tank truck is about to arrive at the liquid hydrogen refueling station within a relatively short and reasonable time, and then generates and sends a hydrogen replenishment signal to the liquid hydrogen refueling station to instruct it to start regulating work.

[0068] In the above formula, , It is dynamic and is obtained based on the historical delivery data of each liquid hydrogen tanker. Specifically, the actual delivery time data of multiple liquid hydrogen tankers on a specific delivery route is obtained, and each road section is delineated according to each liquid hydrogen refueling station. The average delivery time of each road section is calculated based on the actual delivery time. The above-mentioned average delivery time is determined based on the real-time location of the liquid hydrogen tanker and the average delivery time of the road section between the liquid hydrogen refueling stations. (the average of the average delivery time); where D is the average distance of a single road segment. Based on the historical delivery data of each liquid hydrogen tanker, the delivery time of each liquid hydrogen refueling station is determined. Based on the total delivery time of the station, the average delivery time of the liquid hydrogen refueling station is calculated, and the average delivery time of the station is used as the above .

[0069] Preferably, determining the control scheme of the liquid hydrogen storage tank based on the comparison result includes:

[0070] If the hydrogen storage amount is higher than the first hydrogen demand amount, no control scheme for the liquid hydrogen storage tank is generated;

[0071] If the hydrogen storage amount is lower than the first hydrogen demand amount, a liquid hydrogen adjustment amount is determined according to a first difference between the hydrogen storage amount and the first hydrogen demand amount, and a first target electromagnetic control valve of the liquid hydrogen storage tank is determined according to the liquid hydrogen adjustment amount and its target state is determined to be a closed state;

[0072] Among them, a number of partitions are arranged in the middle of the liquid hydrogen storage tank, and the interior of the liquid hydrogen storage tank is divided into a plurality of chambers by the partitions, and an electromagnetic control valve is arranged on each of the partitions, and each of the electromagnetic control valves is in a normally open state; and, when the first target electromagnetic control valve is in a closed state, the interior of the liquid hydrogen storage tank is divided into a filling chamber for communicating with the liquid hydrogen tank truck and a retaining chamber for communicating with the liquid hydrogen pump.

[0073] Reference Figure 3 As shown, the present invention has modified the liquid hydrogen storage tank, and the liquid hydrogen storage tank is divided into multiple cavities by a number of partitions inside the liquid hydrogen storage tank, and the adjacent cavities are switched to a connected state by an electromagnetic control valve. Under normal circumstances, the electromagnetic control valve is in an open state, and the liquid hydrogen between adjacent cavities can flow across the cavity. When the above-mentioned control scheme is executed, some electromagnetic control valves are in a closed state, which divides the liquid hydrogen storage tank into two areas, namely the filling chamber and the retention chamber. Among them, the filling chamber is used for the liquid hydrogen tank truck to replenish the liquid hydrogen, and the retention chamber is used for the hydrogen storage bottle group, that is, in the process of the liquid hydrogen tank truck filling the filling chamber with liquid hydrogen, the liquid hydrogen pump extracts liquid hydrogen from the retention chamber to supply the hydrogen storage bottle group.

[0074] Based on the liquid hydrogen storage tank after the above transformation, the present invention calculates the first difference between the hydrogen storage capacity and the first hydrogen demand, and determines the liquid hydrogen adjustment amount according to the first difference (liquid hydrogen adjustment amount = first difference * adjustment coefficient, the adjustment coefficient is greater than 1), and determines the first target electromagnetic control valve of the liquid hydrogen storage tank and determines its target state as the closed state according to the liquid hydrogen adjustment amount and the configuration of the retention cavity in the liquid hydrogen storage tank. Specifically, according to the liquid hydrogen adjustment amount and the size of each cavity in the liquid hydrogen storage tank, it is determined how many cavities are needed to form the retention cavity, thereby determining the corresponding number of first target electromagnetic control valves, and controlling the electromagnetic control valve closest to the filling cavity as the target electromagnetic control valve, switching it to the closed state, that is, realizing the configuration of the retention cavity from the liquid hydrogen storage tank.

[0075] Therefore, the present invention realizes the adjustment of the cavity division inside the liquid hydrogen storage tank through the partition and the electromagnetic control valve. The adjusted liquid hydrogen storage tank is divided into a filling chamber and a retention chamber. The filling chamber is used for normal filling of liquid hydrogen from the liquid hydrogen tank truck, and the retention chamber is used to normally supply the hydrogen required by the hydrogen fuel cell vehicle to the hydrogen filling machine of the liquid hydrogen filling station. This not only ensures the safety of the liquid hydrogen tank truck during filling and replenishing hydrogen, but also will not affect the normal vehicle hydrogen demand, which is beneficial to reducing the economic impact on the liquid hydrogen filling station.

[0076] In addition, there is a prerequisite for the generation of a control plan for a liquid hydrogen storage tank, namely, the hydrogen storage capacity is lower than the first hydrogen demand. If the hydrogen storage capacity in the hydrogen storage bottle group is higher than the first hydrogen demand, it means that the hydrogen storage bottle group is able to meet the hydrogen refueling needs of hydrogen fuel cell vehicles, and there is no need to generate a control plan for the liquid hydrogen storage tank.

[0077] Preferably, an auxiliary control device is arranged in the filling chamber, and the liquid hydrogen storage tank is controlled based on the control scheme, including:

[0078] The auxiliary control device is controlled to dispense the liquid hydrogen in the filling chamber into the retaining chamber by changing the inclination or pushing horizontally, and the first target electromagnetic control valve is controlled to switch to a closed state after the dispensing is completed.

[0079] The present invention also provides an auxiliary control device in the filling chamber. The auxiliary control device can be Figure 3 The structure of the auxiliary control device 1 shown in FIG. Figure 4 The structure of the auxiliary control device 2 is shown. Figure 3 The auxiliary control device includes a driving motor and an inclined plate with an adjustable tilt angle. Under the operation of the driving motor, one end of the inclined plate with an adjustable tilt angle is heightened, so that part of the liquid hydrogen in the filling chamber will enter the retention chamber through the normally open first target electromagnetic control valve. When the amount of liquid hydrogen in the retention chamber reaches the liquid hydrogen adjustment amount (a liquid level sensor is provided in each chamber, based on which the amount of liquid hydrogen in the retention chamber can be calculated), the first target electromagnetic control valve is switched to a closed state. At the same time, under the operation of the driving motor, one end of the inclined plate with an adjustable tilt angle is heightened.

[0080] Reference Figure 4 , the auxiliary control device includes a driving motor and a push plate. Under the operation of the driving motor, the push plate is driven to move toward the retaining chamber, and part of the liquid hydrogen in the filling chamber will enter the retaining chamber through the normally open first target electromagnetic control valve. When the amount of liquid hydrogen in the retaining chamber reaches the liquid hydrogen adjustment amount, the first target electromagnetic control valve is switched to a closed state. At the same time, under the operation of the driving motor, the push plate is restored to its initial state. It should be noted that a flow port corresponding to the filling port of the liquid hydrogen storage tank is provided on the push plate, which will not affect the liquid hydrogen tank truck from injecting liquid hydrogen into the filling chamber.

[0081] Any of the above two auxiliary control device structures can be selected for implementation, and the present invention does not make any specific limitations.

[0082] Preferably, the regulating the liquid hydrogen storage tank based on the regulation scheme further includes:

[0083] In the process of the liquid hydrogen tank truck filling the liquid hydrogen storage tank with liquid hydrogen, the hydrogen demand prediction model is used to perform an update prediction to obtain a second hydrogen demand of the liquid hydrogen filling station during the hydrogen filling operation period;

[0084] If the second hydrogen demand is higher than the first hydrogen demand and the second difference between the two is higher than a second threshold, the second target electromagnetic control valve is first controlled to switch to a closed state, and then the first target electromagnetic control valve is controlled to switch to an open state, so as to dispense the liquid hydrogen in the filling chamber into the retention chamber; wherein the second target electromagnetic control valve is farther away from the filling chamber than the first target electromagnetic control valve;

[0085] After the adjustment is completed, the first target electromagnetic control valve is first controlled to switch to a closed state, and then the second target electromagnetic control valve is controlled to switch to an open state.

[0086] In an embodiment of the present invention, since the aforementioned first hydrogen demand is predicted before the liquid hydrogen tank truck refills the liquid hydrogen storage tank of the liquid hydrogen refueling station, it is necessary to control the hydrogen demand prediction model to perform multiple update predictions during the process of the liquid hydrogen tank truck driving to the liquid hydrogen refueling station and during the refilling process (especially in the early stage of refilling). If the updated predicted second hydrogen demand is higher than the first hydrogen demand and the second difference between the two is higher than the second threshold (the second threshold corresponds to the normal fluctuation range of hydrogen demand), it means that the hydrogen demand of the liquid hydrogen refueling station has a large fluctuation. At this time, the control plan needs to be adjusted to appropriately increase the liquid hydrogen supply to the hydrogen storage bottle group.

[0087] Specifically, the second target electromagnetic control valve that is farther away from the filling chamber than the first target electromagnetic control valve is first controlled to switch to a closed state, and then the first target electromagnetic control valve is controlled to switch to an open state, so that part of the liquid hydrogen newly added to the filling chamber will flow into the retaining chamber through the opened first target electromagnetic control valve, and when it is determined that the amount of liquid hydrogen in the retaining chamber is compatible with the second hydrogen demand, reverse control is performed, that is, the first target electromagnetic control valve is first controlled to switch to a closed state, and then the second target electromagnetic control valve is controlled to switch to an open state.

[0088] Wherein, the number of the second target electromagnetic control valve can be multiple. Figure 4As shown, there are 3 partitions and 3 electromagnetic control valves. The electromagnetic control valve closest to the filling chamber is determined as the first target electromagnetic control valve (the second / third... electromagnetic control valve close to the filling chamber can also be determined as the first target electromagnetic control valve according to actual needs). Calculate the cumulative time of the liquid hydrogen tank truck replenishing liquid hydrogen into the liquid hydrogen storage tank. If the cumulative time is lower than the third threshold, set the second target electromagnetic control valve to the first number (for example, 1); if the cumulative time is higher than the third threshold, set the second target electromagnetic control valve to the second number (for example, 2). When the cumulative time for the liquid hydrogen tanker to replenish liquid hydrogen into the liquid hydrogen storage tank is lower than the third threshold, it means that the liquid hydrogen reserves in the liquid hydrogen storage tank are not enough. At this time, a smaller number of second target electromagnetic control valves are regulated to switch to a closed state, which is sufficient to ensure that the liquid hydrogen storage tank is in a closed state with respect to the liquid hydrogen pump (the liquid hydrogen reserves that are not enough will not break the second target electromagnetic control valve); and when the cumulative time for the liquid hydrogen tanker to replenish liquid hydrogen into the liquid hydrogen storage tank is higher than the third threshold, it means that the liquid hydrogen reserves in the liquid hydrogen storage tank are large, and the second target electromagnetic control valve set at a low position is more likely to be broken by the large amount of liquid hydrogen reserves, and the consequence of the break may cause a greater impact on the liquid hydrogen pump. At this time, a larger number of second target electromagnetic control valves are regulated to switch to a closed state, thereby reducing the risk of impact on the liquid hydrogen pump.

[0089] like Figure 5 As shown, an embodiment of the present invention further discloses a hydrogen replenishment system for a liquid hydrogen refueling station, which is applied to a control device of a liquid hydrogen refueling station. The system includes a model building and training module, a first processing module, a second processing module, and a control module;

[0090] The model building and training module is used to build and train a hydrogen demand prediction model;

[0091] The first processing module is used for determining the amount of liquid hydrogen replenished by the liquid hydrogen tank truck by communicating and interacting with the liquid hydrogen tank truck in response to receiving a hydrogen replenishment signal from the liquid hydrogen refueling station, and determining a hydrogen replenishment operation period according to the liquid hydrogen replenishment amount;

[0092] The second processing module is used to use the hydrogen demand prediction model to predict the first hydrogen demand of the liquid hydrogen refueling station during the hydrogen replenishment operation period, and to determine the hydrogen storage capacity of the hydrogen cylinder group at the start time of the hydrogen replenishment operation period;

[0093] The control module is used to compare the hydrogen storage capacity and the first hydrogen demand, determine a control scheme for the liquid hydrogen storage tank based on the comparison result, and control the liquid hydrogen storage tank based on the control scheme to accommodate the liquid hydrogen tank truck filling liquid hydrogen into the liquid hydrogen storage tank.

[0094] An embodiment of the present invention further discloses an electronic device, comprising: a memory storing executable program code; a processor coupled to the memory; the processor calls the executable program code stored in the memory to execute the method described in the first embodiment.

[0095] The processor may be a variety of general and / or special processing components with processing and computing capabilities. Some examples of processors include, but are not limited to, a central processing unit (CPU), a graphics processing unit (GPU), various dedicated artificial intelligence (AI) computing chips, various computing units running machine learning model algorithms, a digital signal processor (DSP), and any appropriate processor, controller, microcontroller, etc. The processor executes the various methods and processes described above, such as the hydrogen replenishment method of a liquid hydrogen refueling station.

[0096] Various implementations of the systems and techniques described above herein can be implemented in digital electronic circuit systems, integrated circuit systems, field programmable gate arrays (FPGAs), application specific integrated circuits (ASICs), application specific standard products (ASSPs), systems on chips (SOCs), load programmable logic devices (CPLDs), computer hardware, firmware, software, and / or combinations thereof. These various implementations can include: being implemented in one or more computer programs that can be executed and / or interpreted on a programmable system including at least one programmable processor, which can be a special purpose or general purpose programmable processor that can receive data and instructions from a storage system, at least one input device, and at least one output device, and transmit data and instructions to the storage system, the at least one input device, and the at least one output device.

[0097] The embodiment of the present invention further discloses a computer storage medium, on which a computer program is stored. When the computer program is executed by a processor, the method described in the first embodiment is executed.

[0098] Computer storage media can be tangible media that can contain or store programs for use by or in conjunction with an instruction execution system, device, or equipment. Computer storage media can be machine-readable signal media or machine-readable storage media. Computer storage media can include, but are not limited to, electronic, magnetic, optical, electromagnetic, infrared, or semiconductor systems, devices, or equipment, or any suitable combination of the foregoing. More specific examples of computer storage media can include electrical connections based on one or more lines, portable computer disks, hard disks, random access memories (RAM), read-only memories (ROM), erasable programmable read-only memories (EPROM or flash memory), optical fibers, portable compact disk read-only memories (CD-ROM), optical storage devices, magnetic storage devices, or any suitable combination of the foregoing.

[0099] An embodiment of the present invention further discloses a computer program product, wherein a computer program is stored in the computer program product, and when the computer program is executed, any of the above methods is implemented.

[0100] It should be understood that the various forms of processes shown above can be used to reorder, add or delete steps. For example, the steps recorded in this disclosure can be executed in parallel, sequentially or in different orders, as long as the desired results of the technical solutions disclosed in this disclosure can be achieved, and this document does not limit this.

[0101] The above specific implementations do not constitute a limitation on the protection scope of the present disclosure. It should be understood by those skilled in the art that various modifications, combinations, sub-combinations and substitutions can be made according to design requirements and other factors. Any modification, equivalent substitution and improvement made within the principles of the present disclosure shall be included in the protection scope of the present disclosure.

Claims

1. A method for replenishing hydrogen at a liquid hydrogen refueling station, applied to a control device of a liquid hydrogen refueling station, characterized in that: The method comprises the following steps: Build and train a hydrogen demand prediction model; In response to receiving a hydrogen replenishment signal from a liquid hydrogen refueling station, determining the amount of liquid hydrogen replenished by the liquid hydrogen tank truck by communicating and interacting with the liquid hydrogen tank truck, and determining a hydrogen replenishment operation period according to the amount of liquid hydrogen replenished; Use the hydrogen demand prediction model to predict the first hydrogen demand of the liquid hydrogen refueling station during the hydrogen replenishment operation period, and determine the hydrogen storage capacity of the hydrogen cylinder group at the start time of the hydrogen replenishment operation period; Comparing the hydrogen storage amount with the first hydrogen demand, determining a control scheme for the liquid hydrogen storage tank based on the comparison result, and regulating the liquid hydrogen storage tank based on the control scheme to accommodate the liquid hydrogen tank truck filling the liquid hydrogen storage tank with liquid hydrogen; Based on the comparison result, a control scheme of the liquid hydrogen storage tank is determined, including: If the hydrogen storage amount is higher than the first hydrogen demand amount, no control scheme for the liquid hydrogen storage tank is generated; If the hydrogen storage amount is lower than the first hydrogen demand amount, a liquid hydrogen adjustment amount is determined according to a first difference between the hydrogen storage amount and the first hydrogen demand amount, and a first target electromagnetic control valve of the liquid hydrogen storage tank is determined according to the liquid hydrogen adjustment amount and its target state is determined to be a closed state; Among them, a plurality of partitions are arranged in the middle of the liquid hydrogen storage tank, and the interior of the liquid hydrogen storage tank is divided into a plurality of chambers by the partitions, and an electromagnetic control valve is arranged on each of the partitions, and each of the electromagnetic control valves is in a normally open state; and, when the first target electromagnetic control valve is in a closed state, the interior of the liquid hydrogen storage tank is divided into a filling chamber for communicating with the liquid hydrogen tank truck and a retention chamber for communicating with the liquid hydrogen pump; An auxiliary control device is arranged in the filling chamber, and the liquid hydrogen storage tank is controlled based on the control scheme, including: Controlling the auxiliary control device to dispense the liquid hydrogen in the filling chamber into the retaining chamber by changing the inclination or pushing horizontally, and controlling the first target electromagnetic control valve to switch to a closed state after the dispensing is completed; The filling chamber is used for normal filling of liquid hydrogen from a liquid hydrogen tank truck, and the retaining chamber is used for normal supply of hydrogen required by hydrogen fuel cell vehicles to the hydrogen filling machine of the liquid hydrogen filling station.

2. A method for replenishing hydrogen at a liquid hydrogen refueling station according to claim 1, characterized in that: The hydrogen replenishment signal of the liquid hydrogen refueling station is obtained by the following method, including: The liquid hydrogen tank truck calculates the route distance to the liquid hydrogen refueling station and the number of other liquid hydrogen refueling stations located on the route before the liquid hydrogen refueling station, and sends the hydrogen replenishment signal to the liquid hydrogen refueling station when the route distance and the number of other liquid hydrogen refueling stations meet preset conditions.

3. A method for replenishing hydrogen at a liquid hydrogen refueling station according to claim 2, characterized in that: When the route distance and the number of other liquid hydrogen refueling stations meet preset conditions, sending the hydrogen replenishment signal to the liquid hydrogen refueling station includes: Substitute the route distance and the number of other liquid hydrogen refueling stations into the following formula to calculate the equivalent remaining time: ； In the formula, is the equivalent remaining time; is the route distance, is the distance base value, is a base value of duration corresponding to the route distance; is the number of other liquid hydrogen refueling stations, is the base value of duration corresponding to the quantity; is the road condition coefficient; When the equivalent remaining time is lower than a first threshold, it is determined that a preset condition is met, and the hydrogen replenishment signal is generated and sent to the liquid hydrogen refueling station.

4. A method for replenishing hydrogen at a liquid hydrogen refueling station according to claim 1, characterized in that: The liquid hydrogen storage tank is regulated based on the regulation scheme, and further includes: In the process of the liquid hydrogen tank truck filling the liquid hydrogen storage tank with liquid hydrogen, the hydrogen demand prediction model is used to perform an update prediction to obtain a second hydrogen demand of the liquid hydrogen filling station during the hydrogen filling operation period; If the second hydrogen demand is higher than the first hydrogen demand and the second difference between the two is higher than a second threshold, the second target electromagnetic control valve is first controlled to switch to a closed state, and then the first target electromagnetic control valve is controlled to switch to an open state, so as to dispense the liquid hydrogen in the filling chamber into the retention chamber; wherein the second target electromagnetic control valve is farther away from the filling chamber than the first target electromagnetic control valve; After the adjustment is completed, the first target electromagnetic control valve is first controlled to switch to a closed state, and then the second target electromagnetic control valve is controlled to switch to an open state.

5. A hydrogen replenishment system for a liquid hydrogen refueling station based on the method according to any one of claims 1 to 4, applied to a control device of a liquid hydrogen refueling station, the system comprising a model building and training module, a first processing module, a second processing module, and a control module; characterized in that: The model building and training module is used to build and train a hydrogen demand prediction model; The first processing module is used for determining the amount of liquid hydrogen replenished by the liquid hydrogen tank truck by communicating and interacting with the liquid hydrogen tank truck in response to receiving a hydrogen replenishment signal from the liquid hydrogen refueling station, and determining a hydrogen replenishment operation period according to the liquid hydrogen replenishment amount; The second processing module is used to use the hydrogen demand prediction model to predict the first hydrogen demand of the liquid hydrogen refueling station during the hydrogen replenishment operation period, and to determine the hydrogen storage capacity of the hydrogen cylinder group at the start time of the hydrogen replenishment operation period; The control module is used to compare the hydrogen storage capacity and the first hydrogen demand, determine a control scheme for the liquid hydrogen storage tank based on the comparison result, and control the liquid hydrogen storage tank based on the control scheme to accommodate the liquid hydrogen tank truck filling liquid hydrogen into the liquid hydrogen storage tank.

6. An electronic device, comprising: A memory storing executable program code; A processor coupled to the memory; characterized in that: the processor calls the executable program code stored in the memory to execute the method according to any one of claims 1-4.

7. A computer storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the method according to any one of claims 1 to 4 is executed.

8. A computer program product, characterized in that: The computer program product stores a computer program, and when the computer program is executed, the method according to any one of claims 1 to 4 is implemented.

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