Hydrogenation control device and system

Abstract

The invention provides a hydrogenation control device and system, and relates to the technical field of hydrogen energy optimization, the hydrogenation control device comprises a control module, a detection module and at least two stages of supercharging units; the supercharging units are in cascade connection, and the gas pressure of the previous-stage supercharging unit is smaller than that of the next-stage supercharging unit. The detection module is used for detecting hydrogenation parameters corresponding to the current-stage supercharging unit; and the control module is used for constructing an energy consumption model and determining a target pressure ratio corresponding to the current-stage supercharging unit according to the hydrogenation parameters by utilizing the energy consumption model. The control module is further used for sending a control signal to the current-stage supercharging unit after the current-stage supercharging unit meets the corresponding target pressure ratio, and gas in the current-stage supercharging unit is transmitted to the next-stage supercharging unit. On the basis, the scheme that in the prior art, pressure, flow, temperature and the like in the hydrogenation process are adjusted through prior parameters can be improved, and the accuracy, compatibility and safety of the hydrogenation strategy are improved.

Description

Technical Field

[0001] The present invention relates to the technical field of hydrogen energy optimization, and more particularly, to a hydrogenation control device and system. Background Art

[0002] With the transformation of the global energy structure and the implementation of the sustainable development strategy, hydrogen energy, as a clean, efficient, and renewable energy, is gradually becoming an important part of the future energy system. As an important field of hydrogen energy application, the popularization and promotion of hydrogen fuel cell vehicles are inseparable from a perfect hydrogen refueling station network. However, the existing hydrogen storage systems in hydrogen integrated energy stations face a series of technical challenges during the hydrogenation process, including temperature rise problems, energy consumption control, filling efficiency, and safety during the hydrogenation process.

[0003] Existing hydrogenation control strategies are usually based on program control strategies. For example, the pressure, flow rate, and temperature during the hydrogenation process are controlled through prior parameters. However, this control strategy has many limitations in practical applications, such as insufficient control accuracy, lack of flexibility, high energy consumption, and potential safety hazards. Especially in the case of high-pressure gaseous hydrogen storage, based on the Joule-Thomson effect of hydrogen, the temperature inside the on-vehicle hydrogen storage cylinder rises rapidly during the rapid filling process, which not only affects the hydrogenation efficiency but also may damage the materials of the hydrogen storage cylinder and even pose safety hazards.

[0004] Based on this, there is an urgent need for a hydrogenation strategy that can improve the existing scheme of adjusting the pressure, flow rate, temperature, etc. during the hydrogenation process through prior parameters, and improve the accuracy, compatibility, and safety of the hydrogenation strategy. Summary of the Invention

[0005] In view of this, the purpose of the present invention is to provide a hydrogenation control device and system, which adjust the pressure configuration of the cascaded hydrogen refueling station through an energy consumption model, improve the existing scheme of adjusting the pressure, flow rate, temperature, etc. during the hydrogenation process through prior parameters, and simultaneously improve the accuracy, compatibility, and safety of the hydrogenation strategy.

[0006] To achieve the above purpose, the technical solutions adopted in the embodiments of the present invention are as follows:

[0007] In a first aspect, the present invention provides a hydrogenation control device, including a control module, a detection module, and at least two-stage boosting units; each boosting unit is connected in cascade, and the output end of at least two-stage boosting units is connected to the input end of the on-vehicle hydrogen storage cylinder; wherein, the gas pressure of the previous-stage boosting unit is less than the gas pressure of the next-stage boosting unit; the detection module includes a plurality of detection units, and each boosting unit and the on-vehicle hydrogen storage cylinder correspond to one detection unit respectively; each detection unit is connected to the control module;

[0008] For any stage of the hydrogen boosting unit, a detection module is configured to detect the hydrogenation parameters corresponding to the current stage of the hydrogen boosting unit;

[0009] A control module is configured to construct an energy consumption model and use the energy consumption model to determine the target pressure ratio corresponding to the current stage of the hydrogen boosting unit based on the hydrogenation parameters, so as to reduce the hydrogenation energy consumption during the hydrogen replenishment process of each hydrogen boosting unit through the target pressure ratio;

[0010] The control module is further configured to send a control signal to the current stage of the hydrogen boosting unit after the current stage of the hydrogen boosting unit meets the corresponding target pressure ratio, and transfer the gas in the current stage of the hydrogen boosting unit to the next stage of the hydrogen boosting unit.

[0011] Optionally, for any stage of the hydrogen boosting unit, the hydrogen boosting unit includes a compressor and a hydrogen storage tank connected in sequence. The detection module is configured to detect the hydrogen pressure flowing into the compressor, the hydrogen pressure flowing out of the compressor, and obtain the hydrogen compression coefficient in the hydrogen storage tank to obtain the hydrogenation parameters;

[0012] The control module is configured to construct an energy consumption model of the current stage of the hydrogen boosting unit based on the hydrogenation parameters;

[0013] The control module is further configured to determine the target pressure ratio corresponding to the current stage of the hydrogen boosting unit based on the energy consumption model of the current stage of the hydrogen boosting unit by using the least squares method.

[0014] Optionally, the control module is configured to determine the unit hydrogen work model and the energy consumption model of the compressor for hydrogen replenishment compression based on the hydrogenation parameters to obtain the energy consumption model of the current stage of the hydrogen boosting unit.

[0015] Optionally, the calculation formula for determining the target pressure ratio corresponding to the current stage of the hydrogen boosting unit satisfies:

[0016]

[0017] where E c,all is the energy consumption corresponding to the current stage of the hydrogen boosting unit; x is the temperature; y is the pressure.

[0018] Optionally, the hydrogenation control device further includes a control valve group, and the control valve group includes a plurality of first control valves; each first control valve is respectively arranged at the output end of each stage of the hydrogen boosting unit;

[0019] Each first control valve is connected to the control module;

[0020] After the current stage of the hydrogen boosting unit meets the target pressure ratio, the control module is further configured to send a first control instruction to the first control valve corresponding to the current stage of the hydrogen boosting unit, adjust the opening degree of the first control valve, and transfer the gas in the current stage of the hydrogen boosting unit to the next stage of the hydrogen boosting unit.

[0021] Optionally, the control valve group includes a second control valve, which is arranged at the input end of the vehicle-mounted hydrogen storage cylinder;

[0022] The detection unit is further configured to detect the pressure value of the vehicle-mounted hydrogen storage cylinder;

[0023] The control module is configured to obtain and send a second control instruction to the second control valve according to the pressure value of the vehicle-mounted hydrogen storage cylinder, and adjust the opening degree of the second control valve to change the hydrogen filling flow rate of the vehicle-mounted hydrogen storage cylinder;

[0024] The control module is further configured to determine whether the pressure value of the vehicle-mounted hydrogen storage cylinder is equal to a preset value. If so, it sends a third control instruction to the first control valve and the second control valve respectively to close the control valve group and stop the hydrogen filling operation.

[0025] Optionally, when the hydrogen filling control device receives multiple hydrogen sources, at least two-stage boosting units include a primary boosting unit, and the primary boosting unit includes multiple input ends, and each input end corresponds to a hydrogen source;

[0026] The primary boosting unit is configured to preprocess the hydrogen transmitted by each hydrogen source;

[0027] The detection unit is configured to detect the hydrogen pressure ratio after the preprocessing of the primary boosting unit;

[0028] The control module is further configured to send a control signal to the primary boosting unit after the pressure ratio meets the target pressure ratio of the primary boosting unit, and transmit the compressed hydrogen to the next-stage boosting unit.

[0029] Optionally, when at least two-stage boosting units include a three-stage boosting unit, and the three-stage boosting unit includes a primary boosting unit, an intermediate boosting unit and a high-level boosting unit, the output end of the primary boosting unit is connected to the input end of the intermediate boosting unit; the output end of the intermediate boosting unit is connected to the input end of the high-level boosting unit; the output end of the high-level boosting unit is connected to the input end of the vehicle-mounted hydrogen storage cylinder; wherein, the output end of the intermediate boosting unit is also connected to the input end of the vehicle-mounted hydrogen storage cylinder.

[0030] Optionally, the hydrogen filling control device further includes a refrigeration module, and the refrigeration module is respectively connected to the control module and the vehicle-mounted hydrogen storage cylinder;

[0031] The detection unit is configured to obtain the real-time temperature value of the vehicle-mounted hydrogen storage cylinder;

[0032] The control module is further configured to determine whether the real-time temperature value is equal to a preset temperature value. If so, it sends a fourth control instruction to the refrigeration module to adjust the refrigeration capacity of the refrigeration module and change the filling temperature of the vehicle-mounted hydrogen storage cylinder.

[0033] In a second aspect, the present invention provides a hydrogen filling control system, including the hydrogen filling control device according to any one of the first aspects above.

[0034] A hydrogenation control device and system provided by an embodiment of the present invention include a control module, a detection module, and at least two - stage pressurization units; each pressurization unit is connected in cascade. The detection module is used to detect the hydrogenation parameters corresponding to the current - stage pressurization unit; the control module constructs an energy - consumption model, and combines the hydrogenation parameters, and uses the energy - consumption model to adjust the pressure configuration of the cascade hydrogenation station to obtain a target pressure ratio, so as to achieve precise control of the pressure, flow rate, and temperature during the hydrogenation process, and further reduce the energy consumption during the hydrogenation process. Based on this, the present invention can improve the solution for adjusting the pressure, flow rate, temperature, etc. during the hydrogenation process through prior parameters in the prior art, and simultaneously improve the accuracy, compatibility, and safety of the hydrogenation strategy.

[0035] To make the above - mentioned objects, features, and advantages of the present invention more obvious and understandable, the following specifically gives preferred embodiments and, in conjunction with the accompanying drawings, makes a detailed description as follows. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following will briefly introduce the drawings required to be used in the embodiments. It should be understood that the following drawings only show some embodiments of the present invention, and therefore should not be regarded as limiting the scope. For those of ordinary skill in the art, without creative efforts, other relevant drawings can also be obtained based on these drawings.

[0037] Figure 1 FIG. 1 shows one of the structural schematic diagrams of the hydrogenation control device provided by the embodiment of the present invention;

[0038] Figure 2 FIG. 2 shows one of the structural schematic diagrams of the pressurization unit provided by the embodiment of the present invention;

[0039] Figure 3 FIG. 3 shows another structural schematic diagram of the pressurization unit provided by the embodiment of the present invention;

[0040] Figure 4 FIG. 4 shows another structural schematic diagram of the hydrogenation control device provided by the embodiment of the present invention;

[0041] Figure 5 FIG. 5 shows another structural schematic diagram of the hydrogenation control device provided by the embodiment of the present invention;

[0042] Figure 6 FIG. 6 shows another structural schematic diagram of the hydrogenation control device provided by the embodiment of the present invention;

[0043] Figure 7 FIG. 7 shows another structural schematic diagram of the hydrogenation control device provided by the embodiment of the present invention;

[0044] Figure 8Shows the sixth structural schematic diagram of the hydrogenation control device provided by the embodiment of the present invention;

[0045] Figure 9 Shows the seventh structural schematic diagram of the hydrogenation control device provided by the embodiment of the present invention.

[0046] Icons: 10 - Hydrogenation control device; 101 - Control module; 102 - Detection module; 103 - Boosting unit; 104 - Control valve group; 105 - Refrigeration module; 20 - On-vehicle hydrogen storage cylinder; 201 - Detection unit; 202 - Compressor; 203 - Hydrogen storage tank; 204 - Intercooling heat exchanger; 205 - First control valve; 206 - Second control valve; 301 - Primary boosting unit; 302 - Intermediate boosting unit; 303 - Advanced boosting unit. Specific embodiments

[0047] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Usually, the components of the embodiments of the present invention described and shown in the accompanying drawings here can be arranged and designed in various different configurations.

[0048] 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 claimed present invention, but merely represents the selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative efforts belong to the scope of protection of the present invention.

[0049] It should be noted that relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device. Without further limitation, the element defined by the statement "including one..." does not exclude the existence of another identical element in the process, method, article or device including the said element.

[0050] As described in the background art, in the prior art, the pressure ratio of the boosting unit is often determined by prior parameters. However, the hydrogenation process involves various complex physical and chemical changes, and the hydrogenation requirements under different working conditions are different. The prior parameters will lead to insufficient control accuracy and lack of flexibility, resulting in high energy consumption during the hydrogenation process and reducing the economic benefits of the hydrogen refueling station.

[0051] Based on this, the present invention provides a hydrogenation control strategy to adjust the pressure configuration of the cascade hydrogen refueling station through an energy consumption model, thereby overcoming the above technical problems.

[0052] Please refer to Figure 1 , Figure 1 which shows one of the structural schematic diagrams of the hydrogenation control device in the present invention. The present invention provides a hydrogenation control device 10, including a control module 101, a detection module 102, and at least two stages of boosting units 103; each boosting unit 103 is connected in cascade, and the output end of at least two stages of boosting units 103 is connected to the input end of the on-vehicle hydrogen storage cylinder 20; wherein, the gas pressure of the previous-stage boosting unit 103 is less than the gas pressure of the subsequent-stage boosting unit 103; the detection module 102 includes a plurality of detection units 201, and each boosting unit 103 and the on-vehicle hydrogen storage cylinder 20 correspond to one detection unit 201 respectively; each detection unit 201 is connected to the control module 101.

[0053] For any stage of boosting unit 103, the detection module 102 is used to detect the hydrogenation parameters corresponding to the current-stage boosting unit 103.

[0054] The control module 101 is used to construct an energy consumption model and use the energy consumption model to determine the target pressure ratio corresponding to the current-stage boosting unit according to the hydrogenation parameters, so as to reduce the hydrogenation energy consumption during the hydrogen supply process of each boosting unit through the target pressure ratio.

[0055] The control module 101 is further used to send a control signal to the current-stage boosting unit after the current-stage boosting unit meets the corresponding target pressure ratio, and transfer the gas in the current-stage boosting unit to the subsequent-stage boosting unit.

[0056] In this embodiment, the control module constructs an energy consumption model for the hydrogen supply process of the hydrogen refueling station, and then uses the energy consumption model to convert the hydrogenation parameters, such as temperature / pressure configuration, into a pressure ratio to optimize the energy consumption of the hydrogen supply process. After determining the target pressure ratio corresponding to each cascade-connected boosting unit, the hydrogen is gradually compressed through each boosting unit in turn and transported to the on-vehicle hydrogen storage cylinder at the back end. Among them, the hydrogen in each cascade boosting unit needs to be compressed to meet the target pressure ratio corresponding to the current boosting unit before it will be transferred to the subsequent-stage boosting unit.

[0057] Based on this, the present application adjusts the pressure configuration of the cascade hydrogen refueling station through an energy consumption model to achieve precise control of the pressure, flow rate, and temperature during the hydrogen refueling process, and simultaneously improve the accuracy, compatibility, and safety of the hydrogen refueling strategy.

[0058] Please refer to Figure 2 , Figure 2 which shows one of the structural schematic diagrams of the pressurizing unit in the present application. For any stage of the pressurizing unit, the pressurizing unit 103 includes a compressor 202 and a hydrogen storage tank 203 connected in sequence.

[0059] In this embodiment, the hydrogen refueling parameters at least include relevant parameters such as the temperature, flow rate, and energy consumption during the hydrogen refueling process. For example, the hydrogen pressure flowing into the compressor, the hydrogen pressure flowing out of the compressor, and the hydrogen compression coefficient in the hydrogen storage tank. The hydrogen pressure flowing into the compressor and the hydrogen pressure flowing out of the compressor can be used to characterize the energy consumption parameters during the hydrogen refueling process; the hydrogen compression coefficient in the hydrogen storage tank can characterize the temperature parameters during the hydrogen refueling process; the valve port flow area can be used to characterize the flow rate parameters during the hydrogen refueling process.

[0060] Based on this, the detection module 102 in the present invention can be used to detect the hydrogen pressure flowing into the compressor, the hydrogen pressure flowing out of the compressor, and obtain the hydrogen compression coefficient in the hydrogen storage tank to obtain the hydrogen refueling parameters.

[0061] The control module 101 is used to construct an energy consumption model of the current stage pressurizing unit based on the hydrogen refueling parameters.

[0062] The control module 101 is also used to determine the target pressure ratio corresponding to the current stage pressurizing unit based on the energy consumption model of the current stage pressurizing unit by using the least squares method.

[0063] In this embodiment, the energy consumption model converts the pressure configuration into a problem of optimizing the pressure ratio, and the corresponding target pressure ratio can be obtained by solving the energy consumption model. For example, by using the least squares method, the partial derivatives of the variables in the energy consumption model are determined, and the parameters that satisfy the partial derivative values being zero are taken as the solutions to obtain the target pressure ratio.

[0064] In a possible implementation manner, the calculation formula for determining the target pressure ratio corresponding to the current stage pressurizing unit satisfies:

[0065]

[0066] where E c,all is the energy consumed corresponding to the current stage pressurizing unit; x is the temperature; y is the pressure.

[0067] In this embodiment, the control module 101 can determine the unit hydrogen work model and the compressor compression and hydrogen replenishment energy consumption model based on the hydrogen refueling parameters to obtain the energy consumption model of the current stage pressurizing unit.

[0068] It should be noted that, based on different equipment parameters under different hydrogenation processes, such as different orifice areas and volumes of on-vehicle hydrogen storage cylinders, the specific expression formula of the above energy consumption model is not limited in this embodiment. As long as the unit hydrogen work model and the energy consumption model of the compressor for supplementary hydrogen compression can be determined according to the hydrogenation parameters, the energy consumption model of the current-stage pressurization unit can be obtained.

[0069] Any method that adopts the above construction method to transform the pressure configuration into a problem of optimizing the pressure ratio and uses the least squares method to solve for the corresponding target pressure ratio should be included in the embodiments of the present invention.

[0070] On the basis of Figure 2 please refer to Figure 3 , Figure 3 FIG. 2 shows the second structural schematic diagram of the pressurization unit in the present application. To further reduce the hydrogenation energy consumption, each stage of the pressurization unit 103 in this embodiment further includes an intercooling heat exchanger 204. Among them, the output end of each compressor 202 is connected to the input end of the corresponding intercooling heat exchanger 204, and the output end of the intercooling heat exchanger 204 is connected to the input end of the corresponding hydrogen storage tank 203, so as to achieve heat transfer between two or more fluids at different temperatures through the intercooling heat exchanger 204 to meet the process requirements and improve the energy utilization rate.

[0071] To better achieve the control efficiency of the hydrogenation control device, please refer to Figure 4 , Figure 4 FIG. 3 shows the second structural schematic diagram of the hydrogenation control device in the present application. In this embodiment, the hydrogenation control device 10 further includes a control valve group 104, and the control valve group 104 includes a plurality of first control valves 205; each first control valve 205 is respectively arranged at the output end of each stage of the pressurization unit 103. Among them, each first control valve 205 is connected to the control module 101.

[0072] After the current-stage pressurization unit meets the target pressure ratio, the control module sends a first control instruction to the first control valve corresponding to the current-stage pressurization unit to adjust the opening degree of the first control valve and transfer the gas in the current-stage pressurization unit to the next-stage pressurization unit.

[0073] Please, on the basis of Figure 4 refer to Figure 5 , Figure 5 FIG. 4 shows the third structural schematic diagram of the hydrogenation control device in the present application. The control valve group 104 includes a second control valve 206, and the second control valve 206 is arranged at the input end of the on-vehicle hydrogen storage cylinder 20.

[0074] The detection unit 201 is further configured to detect the pressure value of the on-vehicle hydrogen storage cylinder 20.

[0075] The control module 101 is configured to obtain the pressure value of the on-vehicle hydrogen storage cylinder 20 and send a second control instruction to the second control valve 206 according to the pressure value, and adjust the opening degree of the second control valve 206 to change the hydrogen refueling flow rate of the on-vehicle hydrogen storage cylinder 20.

[0076] The control module 101 is further configured to determine whether the pressure value of the on-vehicle hydrogen storage cylinder 20 is equal to a preset value. If it is equal, the control module 101 sends third control instructions to the first control valve 205 and the second control valve 206 respectively to close the control valve group 104 and stop the hydrogen refueling operation.

[0077] In this embodiment, by obtaining the pressure value of the on-vehicle hydrogen storage cylinder 20, the hydrogen refueling flow rate of the on-vehicle hydrogen storage cylinder 20 can be automatically adjusted, and further, the pressures of the hydrogen storage tanks 203 at all levels of the cascade hydrogen refueling station can be accurately controlled.

[0078] Since the pressure values of different hydrogen sources may be different, to be compatible with different hydrogen source paths, please Figure 1 on the basis of Figure 6 refer to Figure 6 FIG. 4 shows a schematic structural diagram of the hydrogen refueling control device in the present application. When the hydrogen refueling control device 10 receives multiple hydrogen sources, at least two-stage boosting units 103 include a primary boosting unit 301. The primary boosting unit 301 includes multiple input ends, and each input end corresponds to a hydrogen source, such as hydrogen source 1,..., hydrogen source n.

[0079] The primary boosting unit 301 is configured to preprocess the hydrogen transmitted by each hydrogen source to unify the pressure values of the input hydrogen to improve the compression efficiency of the subsequent boosting unit 103.

[0080] The detection unit 201 is configured to detect the hydrogen pressure ratio after the preprocessing by the primary boosting unit 301.

[0081] The control module 101 is further configured to send a control signal to the primary boosting unit 301 to transmit the compressed hydrogen to the subsequent boosting unit 103 after the pressure ratio meets the target pressure ratio of the primary boosting unit 301.

[0082] Please Figure 6 on the basis of Figure 7 refer to Figure 7Figure 5 shows the structural schematic diagram of the hydrogenation control device in the present application. When at least two - stage booster units 103 include a three - stage booster unit, and the three - stage booster unit includes a primary booster unit 301, an intermediate booster unit 302, and a high - level booster unit 303, the output end of the primary booster unit 301 is connected to the input end of the intermediate booster unit 302; the output end of the intermediate booster unit 302 is connected to the input end of the high - level booster unit 303; the output end of the high - level booster unit 303 is connected to the input end of the on - vehicle hydrogen storage cylinder 20; wherein, the output end of the intermediate booster unit 302 is also connected to the input end of the on - vehicle hydrogen storage cylinder 20.

[0083] In this embodiment, the pressure range of the primary booster unit 301 can be 0 - 20 MPa, the pressure range of the intermediate booster unit 302 can be 30 - 40 MPa, and the pressure range of the high - level booster unit 303 can be 70 MPa. It should be noted that during the regular inspection and daily maintenance process at the hydrogen refueling station, for example, during the nitrogen replacement process of the in - station hydrogen storage system, the pressure of the primary booster unit 301 in the present application can be 0 MPa. Under this condition, the residual hydrogen can be completely removed to avoid forming an explosive gas mixture and ensure the operation safety. Among them, the 0 - MPa state of the primary booster unit 301 is a temporary operation, and after the above - mentioned operation is completed, it needs to be restored to the normal working pressure according to the specifications.

[0084] It should be noted that the output end of the intermediate booster unit 302 in this embodiment is not only connected to the input end of the high - level booster unit 303 but also connected to the input end of the on - vehicle hydrogen storage cylinder 20. The above - mentioned treatment method enables the intermediate booster unit 302 to balance the pressure of the high - pressure booster unit 103 to a certain extent and also improves the compatibility of the hydrogenation control device 10 in this embodiment. For example, when a gas pressure of 30 - 40 MPa is required, the hydrogenation control device 10 in this embodiment can flow into the on - vehicle hydrogen storage cylinder 20 through the primary booster unit 301 and the intermediate booster unit 302. Only through two - stage compression can the corresponding setting be satisfied to meet the demand. Another example is that when a gas pressure of 70 MPa is required, the hydrogenation control device 10 in this embodiment can flow into the on - vehicle hydrogen storage cylinder 20 through the primary booster unit 301, the intermediate booster unit 302, and the high - level booster unit 303, and then through three - stage compression to meet the demand.

[0085] It should be noted that the hydrogen storage tanks 203 in each booster unit 103 need to meet the corresponding pressure values to proceed with the next compression process.

[0086] In this embodiment, the hydrogenation control device can also have a temperature adjustment strategy. Please refer to Figure 1 on the basis of Figure 8 , Figure 8Fig. 6 shows a schematic structural diagram of the hydrogenation control device in the present application. The hydrogenation control device 10 further includes a refrigeration module 105, and the refrigeration module 105 is respectively connected to the control module 101 and the vehicle-mounted hydrogen storage cylinder 20.

[0087] The detection unit 201 is used to obtain the real-time temperature value of the vehicle-mounted hydrogen storage cylinder 20.

[0088] The control module 101 is further used to determine whether the real-time temperature value is equal to the preset temperature value. If so, a fourth control instruction is sent to the refrigeration module 105 to adjust the refrigeration capacity of the refrigeration module 105 and change the filling temperature of the vehicle-mounted hydrogen storage cylinder 20.

[0089] Reference Figure 9 , Figure 9 Fig. 7 shows a schematic structural diagram of the hydrogenation control device in the present application. For the convenience of description, in this embodiment, the compressors, intermediate cooling heat exchangers, and energy storage tanks in the primary pressurization unit 301, the intermediate pressurization unit 302, and the high-level pressurization unit 303 are respectively described in combination with the corresponding pressurization levels. For example, the primary pressurization unit 301 includes a first-stage compressor and a first-stage intermediate cooling heat exchanger connected in sequence; the intermediate pressurization unit 302 includes a second-stage compressor, a second-stage intermediate cooling heat exchanger, and a medium-pressure hydrogen storage tank connected in sequence; the high-level pressurization unit 303 includes a third-stage compressor, a third-stage intermediate cooling heat exchanger, and a high-pressure hydrogen storage tank connected in sequence; wherein, the output end of the medium-pressure hydrogen storage tank is respectively connected to the input end of the third-stage compressor and the input end of the refrigeration module; the output end of the high-pressure hydrogen storage tank is also connected to the input end of the refrigeration module 105; the output end of the refrigeration module 105 is then connected to the vehicle-mounted hydrogen storage cylinder 20.

[0090] It should be noted that the hydrogenation control device provided in this embodiment including the three-stage pressurization unit is only a simple embodiment, and this embodiment does not limit the number of stages of the pressurization unit. At the same time, based on actual needs, that is, the hydrogen pressure range of the vehicle-mounted hydrogen storage cylinder under normal conditions is greater than 0-20 MPa. Therefore, for simplicity of description, the low-pressure hydrogen storage tank in the primary pressurization unit is exemplarily omitted, and it should not be a special limitation in this embodiment.

[0091] Based on this, this embodiment can dynamically adjust the refrigeration capacity of the refrigeration module according to the real-time temperature and the target temperature of the vehicle-mounted hydrogen storage cylinder, and formulate a reasonable temperature rise control strategy in combination with the material characteristics of the vehicle-mounted hydrogen storage cylinder and the temperature change law during the filling process.

[0092] Further, based on the above hydrogenation control device, the present invention can further improve the quality of hydrogen in the vehicle-mounted hydrogen storage cylinder. Taking the volume V of the hydrogen storage tank as 0.144 m 3, taking the temperature T = 308K and the hydrogen pressures of T1 = 35 MPa and T2 = 70 MPa as examples, see Table 1 below. Table 1 shows the comparison table of the hydrogen mass in the on-vehicle hydrogen storage cylinder in this embodiment and the hydrogen mass in the on-vehicle hydrogen storage cylinder under the conventional control strategy.

[0093] Table 1. Hydrogen mass comparison table

[0094]

[0095] Based on the above table, it can be seen that the hydrogenation control device provided in the embodiment of the present invention can not only accurately calculate and optimize the pressure of each hydrogen storage tank in the cascade hydrogenation station based on the pressure configuration optimization method of the energy consumption model, ensure that the pressure is stable within the specified range, and effectively reduce the energy consumption, but also improve the hydrogen mass in the on-vehicle hydrogen storage cylinder on this basis.

[0096] In the second aspect, the present invention provides a hydrogenation control system, including the hydrogenation control device described in any one of the above first aspects. Based on this, the hydrogenation control system provided by the present invention can improve the prior art solution of adjusting the pressure, flow rate, temperature, etc. during hydrogenation through prior parameters, and improve the accuracy, compatibility and safety of the hydrogenation strategy.

[0097] The above are only the preferred embodiments of the present invention and are not used to limit the present invention. For those skilled in the art, the present invention can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A hydrogenation control device, characterized in that, It includes a control module, a detection module, and at least two - stage boosting units; each of the boosting units is connected in cascade, and the output end of the at least two - stage boosting units is connected to the input end of the vehicle - mounted hydrogen storage cylinder; among them, the gas pressure of the previous - stage boosting unit is less than that of the next - stage boosting unit; the detection module includes a plurality of detection units, and each boosting unit and the vehicle - mounted hydrogen storage cylinder respectively correspond to a detection unit; each of the detection units is connected to the control module; For any stage of the boosting unit, the detection module is used to detect the hydrogen - adding parameters corresponding to the current - stage boosting unit; The control module is used to construct an energy - consumption model, and use the energy - consumption model to determine the target pressure ratio corresponding to the current - stage boosting unit according to the hydrogen - adding parameters, so as to reduce the hydrogen - adding energy consumption during the hydrogen - replenishing process of each boosting unit through the target pressure ratio; The control module is further used to send a control signal to the current - stage boosting unit after the current - stage boosting unit meets the corresponding target pressure ratio, and transfer the gas in the current - stage boosting unit to the next - stage boosting unit.

2. The hydrogenation control device according to claim 1, characterized in that For any stage of the boosting unit, the boosting unit includes a compressor and a hydrogen storage tank connected in sequence; The detection module is used to detect the hydrogen pressure flowing into the compressor, the hydrogen pressure flowing out of the compressor, and obtain the hydrogen compression coefficient in the hydrogen storage tank to obtain the hydrogen - adding parameters; The control module is used to construct an energy - consumption model of the current - stage boosting unit according to the hydrogen - adding parameters; The control module is further used to determine the target pressure ratio corresponding to the current - stage boosting unit based on the energy - consumption model of the current - stage boosting unit by using the least - squares method.

3. The hydrogen - adding control device according to claim 2, wherein, The control module is used to determine a unit - hydrogen work model and a compressor - compression hydrogen - replenishing energy - consumption model according to the hydrogen - adding parameters to obtain the energy - consumption model of the current - stage boosting unit.

4. The hydrogenation control device according to any one of claims 1 to 3, characterized in that, The calculation formula for determining the target pressure ratio corresponding to the current - stage boosting unit satisfies: Among them, E c,all is the energy consumption corresponding to the current-stage supercharging unit; x is the temperature; y is the pressure.

5. The hydrogenation control device according to claim 1, characterized in that, The hydrogen - adding control device further includes a control valve group, and the control valve group includes a plurality of first control valves; each first control valve is respectively arranged at the output end of each stage of the boosting unit; Each of the first control valves is connected to the control module; After the current - stage boosting unit meets the target pressure ratio, the control module is further used to send a first control instruction to the first control valve corresponding to the current - stage boosting unit, adjust the opening degree of the first control valve, and transfer the gas in the current - stage boosting unit to the next - stage boosting unit.

6. The hydrogenation control device according to claim 5, characterized in that, The control valve group includes a second control valve, and the second control valve is arranged at the input end of the vehicle - mounted hydrogen storage cylinder; The detection unit is further used to detect the pressure value of the vehicle - mounted hydrogen storage cylinder; The control module is used to obtain and send a second control instruction to the second control valve according to the pressure value of the vehicle - mounted hydrogen storage cylinder to adjust the opening degree of the second control valve to change the hydrogen - adding flow rate of the vehicle - mounted hydrogen storage cylinder; The control module is further used to judge whether the pressure value of the vehicle - mounted hydrogen storage cylinder is equal to a preset value. If it is equal, a third control instruction is respectively sent to the first control valve and the second control valve to close the control valve group and stop the hydrogen - adding operation.

7. The hydrogenation control device according to claim 1, wherein When the hydrogenation control device receives multiple hydrogen sources, the at least two-stage supercharging unit includes a primary supercharging unit, and the primary supercharging unit includes a plurality of input ends, and each input end corresponds to a hydrogen source; The primary supercharging unit is used for preprocessing the hydrogen transmitted by each of the hydrogen sources; The detection unit is used for detecting the hydrogen pressure ratio after the preprocessing of the primary supercharging unit; The control module is further configured to send a control signal to the primary supercharging unit after the pressure ratio meets the target pressure ratio of the primary supercharging unit, and transmit the compressed hydrogen to the next-stage supercharging unit.

8. The hydrogenation control device according to claim 1 or 7, characterized in that, When the at least two-stage supercharging unit includes a three-stage supercharging unit, and the three-stage supercharging unit includes a primary supercharging unit, an intermediate supercharging unit and a high-level supercharging unit, the output end of the primary supercharging unit is connected to the input end of the intermediate supercharging unit; the output end of the intermediate supercharging unit is connected to the input end of the high-level supercharging unit; the output end of the high-level supercharging unit is connected to the input end of the vehicle-mounted hydrogen storage cylinder; wherein, the output end of the intermediate supercharging unit is also connected to the input end of the vehicle-mounted hydrogen storage cylinder.

9. The hydrogenation control device according to claim 1, wherein The hydrogenation control device further includes a refrigeration module, and the refrigeration module is respectively connected to the control module and the vehicle-mounted hydrogen storage cylinder; The detection unit is used for obtaining the real-time temperature value of the vehicle-mounted hydrogen storage cylinder; The control module is further configured to judge whether the real-time temperature value is equal to a preset temperature value. If so, a fourth control instruction is sent to the refrigeration module to adjust the refrigeration capacity of the refrigeration module and change the filling temperature of the vehicle-mounted hydrogen storage cylinder.

10. A hydrogenation control system, characterized in that, Including the hydrogenation control device according to any one of claims 1 to 9.

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