Hydrogen refueling station and filling method of hydrogen storage bottle group of hydrogen refueling station

Abstract

The invention provides a hydrogen refueling station and a refueling method of a hydrogen storage bottle group of the hydrogen refueling station. The hydrogen refueling station comprises a first hydrogen storage bottle group, a first control valve, a second hydrogen storage bottle group, a second control valve, a third control valve and a fourth control valve, the end part of the first hydrogen storage bottle group is connected with a first pipeline, and the first control valve is arranged on the first pipeline; a second pipeline is arranged at the end part of the second hydrogen storage bottle group; the second control valve is arranged on the second pipeline; the first hydrogen storage bottle group is communicated with an outlet of the second pipeline through a third pipeline; the third control valve is arranged on the third pipeline; the second hydrogen storage bottle group is communicated with an outlet of the first pipeline through a fourth pipeline; the fourth control valve is arranged on the fourth pipeline; controlling the first control valve and the second control valve to be closed and controlling the third control valve and the fourth control valve to be opened under the condition that the continuous filling frequency of the second hydrogen storage bottle group is greater than or equal to the preset frequency; and controlling the first control valve and the second control valve to be opened under the condition that the continuous filling frequency of the first hydrogen storage bottle group is greater than or equal to the preset frequency.

Description

Technical Field

[0001] The present invention relates to the technical field of hydrogen filling equipment, and in particular to a hydrogen filling station and a filling method for a hydrogen storage bottle group of the hydrogen filling station. Background Art

[0002] Hydrogen refueling stations are dedicated to providing hydrogen refueling services for hydrogen-powered vehicles, hydrogen internal combustion engine vehicles, and hydrogen and natural gas hybrid fuel vehicles. They are a key link in realizing the commercial operation of hydrogen-powered vehicles.

[0003] Ensure that fuel can be quickly and safely supplied to vehicles when needed. Currently, hydrogen refueling stations on the market generally use 45MPa or 90MPa pressure standards to meet the needs of different models of fuel cell vehicles. Hydrogen storage bottle groups are usually composed of multiple independent hydrogen storage bottles.

[0004] However, in actual operation, hydrogen storage bottle groups have different fatigue life problems. In order to improve refueling efficiency, hydrogen refueling stations usually divide hydrogen storage bottle groups into multiple levels and use them in a predetermined order. Although this design optimizes the refueling process to a certain extent, the fatigue life of different hydrogen storage bottle groups varies due to different refueling frequencies.

[0005] When the fatigue life of a hydrogen storage bottle group reaches the design limit first, the remaining hydrogen storage bottle groups often still have considerable remaining life. According to existing relevant regulations, in order to avoid safety risks, when the fatigue life of a hydrogen storage bottle group at a hydrogen refueling station reaches the design limit first, all hydrogen storage bottle groups need to be replaced at the same time, even if some of them are still in good condition. This practice not only leads to a waste of resources, but also significantly increases the construction and operation costs of hydrogen refueling stations, which is not conducive to the long-term sustainable development of the hydrogen energy industry. Summary of the invention

[0006] The present invention provides a hydrogen refueling station and a filling method for a hydrogen storage bottle group of the hydrogen refueling station, so as to solve the problem in the prior art that when the hydrogen storage bottle group of the hydrogen refueling station is replaced, there are still hydrogen storage bottle groups in good condition, which causes waste of resources and increases the operating cost of the hydrogen refueling station.

[0007] The present invention provides a hydrogen refueling station, comprising: a first hydrogen storage bottle group and a first control valve, the end of the first hydrogen storage bottle group is connected to a first pipeline, and the first control valve is arranged on the first pipeline; a second hydrogen storage bottle group and a second control valve, the end of the second hydrogen storage bottle group is provided with a second pipeline, and the second control valve is arranged on the second pipeline; a third control valve and a fourth control valve, the end of the first hydrogen storage bottle group is connected to the outlet of the second pipeline through the third pipeline, and the third control valve is arranged on the third pipeline; the end of the second hydrogen storage bottle group is connected to the outlet of the first pipeline through a fourth pipeline, and the fourth control valve is arranged on the fourth pipeline; when the number of continuous fillings of the second hydrogen storage bottle group is greater than or equal to a preset number, the first control valve and the second control valve are controlled to be closed, and the third control valve and the fourth control valve are controlled to be opened; when the number of continuous fillings of the first hydrogen storage bottle group is greater than or equal to the preset number, the third control valve and the fourth control valve are controlled to be closed, and the first control valve and the second control valve are controlled to be opened.

[0008] According to a hydrogen refueling station provided by the present invention, the second hydrogen storage bottle group includes a third hydrogen storage bottle group and a fourth hydrogen storage bottle group, the second pipeline includes a first sub-pipeline and a second sub-pipeline, and the second control valve includes a first control sub-valve and a second control sub-valve; the first sub-pipeline is arranged at the end of the third hydrogen storage bottle group, and the first control sub-valve is arranged on the first sub-pipeline; the second sub-pipeline is arranged at the end of the fourth hydrogen storage bottle group, and the second control sub-valve is arranged on the second sub-pipeline; the outlet of the third pipeline is respectively connected to the outlets of the first sub-pipeline and the second sub-pipeline.

[0009] According to a hydrogen refueling station provided by the present invention, the fourth control valve includes a third control sub-valve and a fourth control sub-valve, and the fourth pipeline includes a third sub-pipeline and a fourth sub-pipeline; the third hydrogen storage bottle group is connected to the outlet of the first pipeline through the third sub-pipeline, and the third control sub-valve is arranged on the third sub-pipeline; the fourth hydrogen storage bottle group is connected to the outlet of the first pipeline through the fourth sub-pipeline, and the fourth control sub-valve is arranged on the fourth sub-pipeline; when the number of continuous fillings of the third hydrogen storage bottle group is greater than or equal to a preset number, the third control sub-valve, the third control valve and the second control sub-valve are controlled to open; when the number of continuous fillings of the fourth hydrogen storage bottle group is greater than or equal to a preset number, the third control valve, the first control sub-valve and the fourth control sub-valve are controlled to open; when the number of continuous fillings of the first hydrogen storage bottle group is greater than or equal to a preset number, the first control valve, the first control sub-valve and the second control sub-valve are controlled to open.

[0010] A hydrogen refueling station provided according to the present invention also includes a first pressure sensor, a second pressure sensor and a third pressure sensor, the first pressure sensor is arranged at the end of the first hydrogen storage bottle group, the second pressure sensor is arranged at the end of the third hydrogen storage bottle group, and the third pressure sensor is arranged at the end of the fourth hydrogen storage bottle group.

[0011] A hydrogen refueling station provided according to the present invention also includes a control device, and the first pressure sensor, the second pressure sensor and the third pressure sensor are respectively communicated with the control device; the first control valve, the second control valve, the third control valve and the fourth control valve are respectively communicated with the control device.

[0012] A hydrogen refueling station provided according to the present invention also includes a first compression device and a second compression device, the first compression device fills hydrogen toward the first hydrogen storage bottle group through a first pipeline; the second compression device fills hydrogen toward the second hydrogen storage bottle group through a second pipeline.

[0013] The present invention also provides a method for filling a hydrogen storage bottle group at a hydrogen refueling station, based on a hydrogen refueling station as described in any one of the above items, including: obtaining the number of continuous fillings of a first hydrogen storage bottle group and the number of continuous fillings of a second hydrogen storage bottle group; when the number of continuous fillings of the second hydrogen storage bottle group is greater than or equal to a preset number, controlling the first control valve and the second control valve to close, and controlling the third control valve and the fourth control valve to open; when the number of continuous fillings of the first hydrogen storage bottle group is greater than or equal to a preset number, controlling the third control valve and the fourth control valve to close, and controlling the first control valve and the second control valve to open.

[0014] According to a filling method for a hydrogen storage bottle group in a hydrogen filling station provided by the present invention, the consecutive number of times the first hydrogen storage bottle is opened is the sum of the consecutive opening numbers of the first control valve and the third control valve.

[0015] According to a filling method of a hydrogen storage bottle group in a hydrogen filling station provided by the present invention, the second hydrogen storage bottle group includes a third hydrogen storage bottle group and a fourth hydrogen storage bottle group; the second control valve includes a first control sub-valve and a second control sub-valve; the fourth control valve includes a third control sub-valve and a fourth control sub-valve; obtaining the number of continuous fillings of the second hydrogen storage bottle group includes: obtaining the number of continuous fillings of the third hydrogen storage bottle group and the number of continuous fillings of the fourth hydrogen storage bottle group; wherein the number of continuous fillings of the third hydrogen storage bottle group is equal to the sum of the number of continuous openings of the first control sub-valve and the third control sub-valve; the number of continuous fillings of the fourth hydrogen storage bottle group is equal to the sum of the number of continuous openings of the second control sub-valve and the fourth control sub-valve.

[0016] According to a method for filling a hydrogen storage bottle group at a hydrogen filling station provided by the present invention, when the number of continuous fillings of the second hydrogen storage bottle group is greater than or equal to a preset number, the first control valve and the second control valve are controlled to be closed, and the third control valve and the fourth control valve are controlled to be opened; including: when the number of continuous fillings of the third hydrogen storage bottle is greater than or equal to a preset number, the third control sub-valve, the third control valve and the second control sub-valve are controlled to be opened, and the first control sub-valve, the fourth control sub-valve and the first control valve are controlled to be closed. When the number of continuous fillings of the fourth hydrogen storage bottle group is greater than or equal to a preset number, the third control valve, the first control sub-valve and the fourth control sub-valve are controlled to be opened, and the second control sub-valve, the third control sub-valve and the first control valve are controlled to be closed.

[0017] The hydrogen refueling station and the filling method of the hydrogen storage bottle group of the hydrogen refueling station provided by the present invention control the opening and closing of the first control valve, the second control valve, the third control valve and the fourth control valve based on the number of continuous fillings of the first hydrogen storage bottle group and the second hydrogen storage bottle group, so that the outlet of the second pipeline is connected to the first hydrogen storage bottle group, and the outlet of the first pipeline is connected to the second hydrogen storage bottle group; or, the outlet of the second pipeline is connected to the second hydrogen storage bottle group, and the outlet of the first pipeline is connected to the first hydrogen storage bottle group; switch the filling order of the first hydrogen storage bottle group and the second hydrogen storage bottle group, narrow the remaining fatigue life gap between the first hydrogen storage bottle group and the second hydrogen storage bottle group, reduce the replacement frequency of the hydrogen storage bottle groups, and thus reduce the operating cost of the hydrogen refueling station. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0019] Figure 1 It is a structural schematic diagram of the hydrogen refueling station provided by the present invention; Figure 2 It is a schematic flow chart of a filling method of a hydrogen storage bottle group of a hydrogen filling station provided by the present invention; Reference numerals: 1. The first hydrogen storage bottle group; 2. The second hydrogen storage bottle group; 21. The third hydrogen storage bottle group; 22. The fourth hydrogen storage bottle group; 3. The first control valve; 4. The second control valve; 41. The first control sub-valve; 42. The second control sub-valve; 5. The third control valve; 61. The third control sub-valve; 62. The fourth control sub-valve; 7. The first pipeline; 81. The first sub-pipeline; 82. The second sub-pipeline; 9. The third pipeline; 10. The fourth pipeline; 101. The third sub-pipeline; 102. The fourth sub-pipeline; 11. The fifth hydrogen storage bottle group; 12. The fifth pipeline; 13. The first pressure sensor; 14. The second pressure sensor; 15. The third pressure sensor; 16. The fourth pressure sensor. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with the drawings of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. 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.

[0021] In the description of the embodiments of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present invention can be understood according to specific circumstances.

[0022] In the description of the embodiments of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the embodiments of the present invention.

[0023] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0024] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0025] The disclosure below provides many different embodiments or examples to realize different structures of the present invention. In order to simplify the disclosure of the present invention, the parts and settings of specific examples are described below. Of course, they are only examples, and the purpose is not to limit the present invention. In addition, the present invention can repeat reference numbers and / or letters in different examples. This repetition is for the purpose of simplicity and clarity, and does not itself indicate the relationship between the various embodiments and / or settings discussed. In addition, the examples of various specific processes and materials provided by the present invention, but those of ordinary skill in the art can be aware of the applicability of other processes and / or the use of other materials.

[0026] Combine the following Figure 1-Figure 2 The present invention describes a hydrogen refueling station and a method for refueling a hydrogen storage bottle group of the hydrogen refueling station.

[0027] The hydrogen refueling station provided in an embodiment of the present invention includes a first hydrogen storage bottle group 1, a first control valve 3, a first pipeline 7, a second hydrogen storage bottle group 2, a second control valve 4 and a second pipeline. It should be noted that the first hydrogen storage bottle group 1 and the second hydrogen storage bottle group 2 each include a plurality of hydrogen storage bottles. The end of the first hydrogen storage bottle group 1 is connected to the first pipeline 7, and the first control valve 3 is arranged on the first pipeline 7 to control the on-off of the first pipeline 7. When filling is required, the first control valve 3 is controlled to open, and hydrogen can be filled into the equipment to be filled in the first hydrogen storage bottle group 1. The end of the second hydrogen storage bottle group 2 is connected to the second pipeline, and the second control valve 4 is arranged on the second pipeline to control the on-off of the second pipeline. When filling is required, the second control valve 4 is controlled to open, and hydrogen can be filled into the equipment to be filled in the second hydrogen storage bottle group 2.

[0028] Taking the filling pressure of 45Mpa as an example, the current filling order of the hydrogen filling station is the second hydrogen storage bottle group 2 and the first hydrogen storage bottle group 1. Specifically, when filling the first equipment to be filled, the second hydrogen storage bottle group 2 is used first, until the filling pressure in the second hydrogen storage bottle group 2 is less than the preset pressure, and then the first hydrogen storage bottle group 1 is used for filling. It can be understood that when the filling pressure of the second hydrogen storage bottle group 2 is less than the preset pressure, the second hydrogen storage bottle group 2 is pressurized. When filling the second equipment to be filled, the filling pressure in the second hydrogen storage bottle group 2 has met the filling pressure. As above, the second hydrogen storage bottle group 2 is used first until the pressure cannot be filled. In this cycle, the difference between the fatigue life of the second hydrogen storage bottle group 2 and the fatigue life of the first hydrogen storage bottle group 1 increases. When the hydrogen storage bottle group is replaced, the first hydrogen storage bottle group 1 is still in good condition, resulting in waste.

[0029] Based on this, the embodiment of the present invention is adjusted according to the number of continuous fillings of the first hydrogen storage bottle group 1 and the second hydrogen storage bottle group 2 to reduce the difference in the remaining fatigue life of the hydrogen storage bottle groups. Specifically, the embodiment of the present invention sets a third pipeline 9 at the end of the first hydrogen storage bottle group 1, and the first hydrogen storage bottle group 1 is connected to the outlet of the second pipeline through the third pipeline 9. The third control valve 5 is arranged on the third pipeline 9 to control the on-off of the third pipeline 9. The end of the second hydrogen storage bottle group 2 is provided with a fourth pipeline 10, and the end of the second hydrogen storage bottle group 2 is connected to the outlet of the first pipeline 7 through the fourth pipeline 10. The fourth control valve is arranged on the fourth pipeline 10 to control the on-off of the fourth pipeline 10.

[0030] In the actual filling process, the second hydrogen storage bottle group 2 is preferably used for filling, and the first hydrogen storage bottle group 1 is used for filling secondly. The number of continuous fillings of the second hydrogen storage bottle can be obtained. The number of fillings of the second hydrogen storage bottle can be calculated based on its pressure fluctuation range, that is, one pressure fluctuation in the second hydrogen storage bottle group 2 is one filling. The number of fillings can also be calculated based on the number of hydrogen charging times to obtain its fatigue life. When the number of continuous fillings of the second hydrogen storage bottle group 2 is greater than the preset number of times, such as the preset number of times is 11 times, the first control valve 3 and the second control valve 4 are controlled to be closed, and the third control valve 5 and the fourth control valve are controlled to be opened. The first hydrogen storage bottle group 1 is connected to the outlet of the second pipeline through the third pipeline 9, and the second hydrogen storage bottle group 2 is connected to the outlet of the first pipeline 7 through the second pipeline. At this time, the hydrogen in the first hydrogen storage bottle group 1 is filled through the outlet of the second pipeline, that is, the hydrogen in the first hydrogen storage bottle group 1 is filled first, and the hydrogen in the second hydrogen storage bottle group 2 is filled secondly. When the number of continuous fillings in the first hydrogen storage bottle group 1 is greater than or equal to the preset number, the third control valve 5 and the fourth control valve are controlled to be closed, and the first control valve 3 and the second control valve 4 are controlled to be opened. At this time, the hydrogen in the second hydrogen storage bottle group 2 is filled through the second pipeline, that is, the hydrogen in the second hydrogen storage bottle group 2 is filled first. In this cycle, the use frequency of the first hydrogen storage bottle group 1 and the use frequency of the second hydrogen storage bottle group 2 are similar, that is, the number of hydrogen fillings is also similar, the difference in remaining fatigue life is small, the replacement frequency of the hydrogen storage bottle group is reduced, and the operating cost of the hydrogen filling station is reduced.

[0031] The hydrogen refueling station provided in the embodiment of the present invention controls the opening and closing of the first control valve 3, the second control valve 4, the third control valve 5 and the fourth control valve based on the number of continuous refuelings of the first hydrogen storage bottle group 1 and the second hydrogen storage bottle group 2, so that the outlet of the second pipeline is connected to the first hydrogen storage bottle group 1, and the outlet of the first pipeline 7 is connected to the second hydrogen storage bottle group 2; or the outlet of the second pipeline is connected to the second hydrogen storage bottle group 2, and the outlet of the first pipeline 7 is connected to the first hydrogen storage bottle group 1; the refueling sequence of the first hydrogen storage bottle group 1 and the second hydrogen storage bottle group 2 is switched, the remaining fatigue life difference between the first hydrogen storage bottle group 1 and the second hydrogen storage bottle group 2 is shortened, the replacement frequency of the hydrogen storage bottle groups is reduced, and thus the operating cost of the hydrogen refueling station is reduced.

[0032] Furthermore, in order to improve the filling efficiency of the hydrogen filling station, the hydrogen filling station of the embodiment of the present invention further includes a fifth hydrogen storage bottle group 11, a fifth pipeline 12 is provided at the end of the fifth hydrogen storage bottle group 11, and a switch valve is provided on the fifth pipeline 12 to control the on-off of the fifth pipeline 12. The fifth hydrogen storage bottle group 11 can fill the equipment to be filled through the fifth pipeline 12. The number of the fifth hydrogen storage bottle group 11 is not specifically limited and can be set according to actual conditions.

[0033] In one embodiment, the second hydrogen storage bottle group 2 is two, such as Figure 1As shown, they are the third hydrogen storage bottle group 21 and the fourth hydrogen storage bottle group 22, respectively, which can improve the filling efficiency of the hydrogen filling station. Specifically, the second pipeline includes a first sub-pipeline 81 and a second sub-pipeline 82, and the second control valve 4 includes a first control sub-valve 41 and a second control sub-valve 42. The first sub-pipeline 81 is arranged at the end of the third hydrogen storage bottle group 21, and the first control sub-valve 41 is arranged on the first sub-pipeline 81, which is used to control the on-off of the first sub-pipeline 81. When filling is required, the first control sub-valve 41 is controlled to open, and the third hydrogen storage bottle group 21 can fill hydrogen to the equipment to be filled. The second sub-pipeline 82 is arranged at the end of the fourth hydrogen storage bottle group 22, and the second control sub-valve 42 is arranged on the second sub-pipeline 82, which is used to control the on-off of the second sub-pipeline 82. When filling is required, the second control sub-valve 42 is controlled to open, and the fourth hydrogen storage bottle group 22 can fill hydrogen to the equipment to be filled. Furthermore, the outlet of the third pipeline 9 is connected to the first sub-pipeline 81 and the second sub-pipeline 82 respectively. When the third control valve 5 is opened, the first hydrogen storage bottle group 1 can be filled with the equipment to be filled through the third pipeline 9 and the first sub-pipeline 81; or, the first hydrogen storage bottle group 1 can be filled with the equipment to be filled through the third pipeline 9 and the second sub-pipeline 82.

[0034] Further, the fourth control valve includes a third control sub-valve 61 and a fourth control sub-valve 62, and the fourth pipeline 10 includes a third sub-pipeline 101 and a fourth sub-pipeline 102. The end of the third hydrogen storage bottle group 21 is connected to the outlet of the first pipeline 7 through the third sub-pipeline 101, and the third control sub-valve 61 is arranged on the third sub-pipeline 101, and is used to control the on-off of the third sub-pipeline 101. The third control sub-valve 61 is controlled to be opened, and the third hydrogen storage bottle group 21 can be filled to the equipment to be filled through the third sub-pipeline 101 and the first pipeline 7. The end of the fourth hydrogen storage bottle group 22 is connected to the outlet of the first pipeline 7 through the fourth sub-pipeline 102, and the fourth control sub-valve 62 is arranged on the fourth sub-pipeline 102. The third control sub-valve 61 is controlled to be opened, and the fourth hydrogen storage bottle group 22 can be filled to the equipment to be filled through the fourth sub-pipeline 102 and the first pipeline 7.

[0035] In the actual filling process, the third hydrogen storage bottle group 21 and the fourth hydrogen storage bottle group 22 are preferably used for filling, and the first hydrogen storage bottle group 1 is used for filling secondly. The continuous filling times of the third hydrogen storage bottle group 21 and the fourth hydrogen storage bottle group 22 are obtained; if the maximum value is greater than or equal to the preset filling times, they are switched. If the number of continuous fillings of the third hydrogen storage bottle group 21 is greater than the number of continuous fillings of the fourth hydrogen storage bottle group 22, and is greater than or equal to the preset number of times, the third control valve 5, the third control sub-valve 61 and the second control sub-valve 42 are controlled to be opened, wherein the first control valve 3, the first control sub-valve 41 and the fourth control sub-valve 62 are closed; that is, the third hydrogen storage bottle group 21 is connected to the outlet of the first pipeline 7 through the third sub-pipeline 101, the first hydrogen storage bottle group 1 is connected to the outlet of the first sub-pipeline 81 through the third pipeline 9, the fourth hydrogen storage bottle group 22 is connected to the second sub-pipeline 82, and the third hydrogen storage bottle group 21 is switched with the first hydrogen storage bottle group 1. At this time, the first hydrogen storage bottle group 1 and the fourth hydrogen storage bottle group 22 are used for filling first, and the third hydrogen storage bottle group 21 is used for filling secondly.

[0036] As the filling progresses, when the number of continuous fillings in the first hydrogen storage bottle group 1 is greater than or equal to the preset number, the first control valve 3, the first control sub-valve 41 and the second control sub-valve 42 are controlled to open, and the third control valve 5, the third control sub-valve 61 and the fourth control sub-valve 62 are controlled to close, and the first hydrogen storage bottle group 1 and the third hydrogen storage bottle group 21 are switched. When the number of continuous fillings of the fourth hydrogen storage bottle group 22 is greater than or equal to the preset number, the third control valve 5, the first control sub-valve 41 and the fourth control sub-valve 62 are controlled to open, wherein the first control valve 3, the second control sub-valve 42 and the third control sub-valve 61 are closed; that is, the fourth hydrogen storage bottle group 22 is connected to the outlet of the first pipeline 7 through the fourth sub-pipeline 102, the first hydrogen storage bottle group 1 is connected to the second sub-pipeline 82 through the third pipeline 9, the third hydrogen storage bottle group 21 is connected to the first sub-pipeline 81, and the fourth hydrogen storage bottle group 22 is switched with the first hydrogen storage bottle group 1. At this time, the first hydrogen storage bottle group 1 and the third hydrogen storage bottle group 21 are preferentially used for filling, and the fourth hydrogen storage bottle group 22 is used for filling secondly. This cycle is repeated, thereby reducing the difference between the remaining life of the first hydrogen storage bottle group 1, the third hydrogen storage bottle group 21 and the fourth hydrogen storage bottle group 22.

[0037] The hydrogen refueling station provided in the embodiment of the present invention further includes a first pressure sensor 13, a second pressure sensor 14, and a third pressure sensor 15. The first pressure sensor 13 is disposed at the end of the first hydrogen storage bottle group 1, such as being disposed on the first pipeline 7 between the first control valve 3 and the end of the first hydrogen storage bottle group 1, and is used to monitor the pressure information of the first hydrogen storage bottle group 1. The second pressure sensor 14 is disposed at the end of the third hydrogen storage bottle group 21, such as being disposed on the first sub-pipeline 81 between the first control sub-valve 41 and the third hydrogen storage bottle group 21, and is used to obtain the pressure information of the third hydrogen storage bottle group 21. The third pressure sensor 15 is disposed at the end of the fourth hydrogen storage bottle group 22, such as being disposed on the second sub-pipeline 82 between the second control sub-valve 42 and the fourth hydrogen storage bottle group 22, and is used to obtain the pressure information of the fourth hydrogen storage bottle group 22. In addition, a fifth pressure sensor is also disposed at the end of the fifth hydrogen storage bottle group 11, and is used to obtain the pressure information of the fifth hydrogen storage bottle group 11.

[0038] The hydrogen refueling station is also provided with a control device, and the first pressure sensor 13, the second pressure sensor 14, the third pressure sensor 15 and the fourth pressure sensor 16 are respectively connected to the control device for communication. The control device is used to obtain the pressure information monitored by the first pressure sensor 13 to understand the pressure condition of the first hydrogen storage bottle group 1. The control device is also used to obtain the pressure information monitored by the second pressure sensor 14 to understand the pressure condition of the third hydrogen storage bottle group 21. The control device is also used to obtain the pressure information monitored by the third pressure sensor 15 to understand the pressure condition of the fourth hydrogen storage bottle group 22. The control device is also used to obtain the pressure information monitored by the fourth pressure sensor 16 to understand the pressure condition of the fifth hydrogen storage bottle group 11.

[0039] Further, the first control valve 3, the second control valve 4, the third control valve 5 and the fourth control valve are respectively connected to the control device for communication, and the control device can control the opening and closing of the first control valve 3, the second control valve 4, the third control valve 5 and the fourth control valve. For example, the control device can calculate the fatigue life of each hydrogen storage bottle group based on the pressure information of each hydrogen storage bottle group and the corresponding pressure information, and then control the opening and closing of each control valve to achieve switching.

[0040] In addition, the control device can also switch each control valve based on the usage cycle, such as controlling the first hydrogen storage bottle group 1 and the third hydrogen storage bottle group 21 to switch after a first time interval; and controlling the first hydrogen storage bottle group 1 and the fourth hydrogen storage bottle group 22 to switch after a second time interval. This can also narrow the gap in the remaining fatigue life of each hydrogen storage bottle group. The first time interval and the second time interval are not specifically limited, such as one day, one week, or one month.

[0041] The first control valve 3, the second control valve 4 (the first control sub-valve 41 and the second control sub-valve 42), the third control valve 5, and the fourth control valve (the third control sub-valve 61 and the fourth control sub-valve 62) in the embodiment of the present invention are automatic valves with valve position feedback function, which can realize counting. The control device can receive the number of times each control valve is switched on and off, thereby obtaining the fatigue life of each hydrogen storage bottle group. Specifically, the total number of times the first control valve 3 and the third control valve 5 are opened can calculate the fatigue life of the first hydrogen storage bottle group 1. The total number of times the first control sub-valve 41 and the third control sub-valve 61 are opened can calculate the fatigue life of the third hydrogen storage bottle group 21. The total number of times the second control sub-valve 42 and the fourth control sub-valve 62 are opened can calculate the fatigue life of the fourth hydrogen storage bottle group 22. It should be noted that the valve feedback function of each control valve can detect whether the valve is switched in place, thereby improving the safety of the system.

[0042] In the case of insufficient hydrogen or insufficient pressure in the hydrogen storage bottle group in the embodiment of the present invention, hydrogen can be charged or pressurized into the hydrogen storage bottle group through a compression device. The first compression device charges hydrogen or pressurizes the first hydrogen storage bottle group 1 through the first pipeline 7. The second compression device charges hydrogen or pressurizes the second hydrogen storage bottle group 2 through the second pipeline. Specifically, the second compression device charges hydrogen or pressurizes the third hydrogen storage bottle group 21 through the first sub-pipeline 81, and the second compression device charges hydrogen or pressurizes the fourth hydrogen storage bottle group 22 through the second sub-pipeline 82. The third compression device charges hydrogen or pressurizes the fifth hydrogen storage bottle group 11 through the fifth pipeline 12.

[0043] Based on the hydrogen refueling station in any of the above embodiments, an embodiment of the present invention further provides a method for filling a hydrogen storage bottle group in a hydrogen refueling station.

[0044] like Figure 2 As shown, the filling method of the hydrogen storage bottle group of the hydrogen filling station according to the embodiment of the present invention includes: step 100, obtaining the continuous filling number of the first hydrogen storage bottle group and the continuous filling number of the second hydrogen storage bottle group.

[0045] The number of continuous fillings of the first hydrogen storage bottle group can be calculated by the pressure fluctuation information of the first hydrogen storage bottle group, or can be determined by the number of startups of the first compression device. In one embodiment, the number of continuous fillings of the first hydrogen storage bottle group is the sum of the number of times the first control valve and the third control valve are continuously opened.

[0046] The number of continuous fillings of the second hydrogen storage bottle group can be determined by the number of startups of the second compression device. In one embodiment, the second hydrogen storage bottle group includes a third hydrogen storage bottle group and a fourth hydrogen storage bottle group; the second control valve includes a first control sub-valve and a second control sub-valve; and the fourth control valve includes a third control sub-valve and a fourth control sub-valve. Obtaining the number of continuous fillings of the second hydrogen storage bottle group includes: obtaining the number of continuous fillings of the third hydrogen storage bottle group and the number of continuous fillings of the fourth hydrogen storage bottle group. Obtaining the number of continuous fillings of the third hydrogen storage bottle group can be calculated by the pressure fluctuation information of the third hydrogen storage bottle group. Obtaining the number of continuous fillings of the fourth hydrogen storage bottle group can be calculated by the pressure fluctuation information of the fourth hydrogen storage bottle group. In one embodiment, the number of continuous fillings of the third hydrogen storage bottle group is equal to the sum of the continuous opening times of the first control sub-valve and the third control sub-valve; the number of continuous fillings of the fourth hydrogen storage bottle group is equal to the sum of the continuous opening times of the second control sub-valve and the fourth control sub-valve.

[0047] Step 200, when the number of continuous fillings of the second hydrogen storage bottle group is greater than or equal to the preset number, the first control valve and the second control valve are controlled to be closed, and the third control valve and the fourth control valve are controlled to be opened, so as to realize the switching of the first hydrogen storage bottle group and the second hydrogen storage bottle group, that is, the filling order is changed from the second hydrogen storage bottle group and the first hydrogen storage bottle group to the first hydrogen storage bottle group and the second hydrogen storage bottle group.

[0048] Step 300, when the number of continuous fillings of the first hydrogen storage bottle group is greater than or equal to the preset number, the third control valve and the fourth control valve are controlled to be closed, and the first control valve and the second control valve are controlled to be opened. The switching of the first hydrogen storage bottle group and the second hydrogen storage bottle group is realized, that is, the filling sequence is changed from the first hydrogen storage bottle group and the second hydrogen storage bottle group to the second hydrogen storage bottle group and the first hydrogen storage bottle group. In this cycle, the filling frequency of the first hydrogen storage bottle group and the second hydrogen storage bottle group is close, and the remaining fatigue life is close.

[0049] When the number of continuous fillings of the second hydrogen storage bottle group is greater than or equal to the preset number, the first control valve and the second control valve are controlled to be closed, and the third control valve and the fourth control valve are controlled to be opened; including: when the number of continuous fillings of the third hydrogen storage bottle is greater than or equal to the preset number, the third control sub-valve, the third control valve and the second control sub-valve are controlled to be opened, and the first control sub-valve, the fourth control sub-valve and the first control valve are controlled to be closed. When the number of continuous fillings of the fourth hydrogen storage bottle group is greater than or equal to the preset number, the third control valve, the first control sub-valve and the fourth control sub-valve are controlled to be opened, and the second control sub-valve, the third control sub-valve and the first control valve are controlled to be closed.

[0050] In the actual filling process, the third and fourth hydrogen storage bottle groups are preferably used for filling, and the first hydrogen storage bottle group is used for filling secondly. The continuous filling times of the third hydrogen storage bottle group and the fourth hydrogen storage bottle group are obtained; when the maximum value is greater than or equal to the preset filling times, they are switched. If the continuous filling times of the third hydrogen storage bottle group are greater than the continuous filling times of the fourth hydrogen storage bottle group, and are greater than or equal to the preset times, the third control valve, the third control sub-valve and the second control sub-valve are controlled to open, and the first control valve, the first control sub-valve and the fourth control sub-valve are closed; that is, the third hydrogen storage bottle group is connected to the outlet of the first pipeline through the third sub-pipeline, the first hydrogen storage bottle group is connected to the outlet of the first sub-pipeline through the third pipeline, the fourth hydrogen storage bottle group is connected to the second sub-pipeline, and the third hydrogen storage bottle group is switched with the first hydrogen storage bottle group. At this time, the first and fourth hydrogen storage bottle groups are used for filling first, and the third hydrogen storage bottle group is used for filling secondly.

[0051] As the filling proceeds, when the number of continuous fillings in the first hydrogen storage bottle group is greater than or equal to the preset number, the first control valve, the first control sub-valve and the second control sub-valve are controlled to open, and the third control valve, the third control sub-valve and the fourth control sub-valve are controlled to close, and the first hydrogen storage bottle group is switched with the third hydrogen storage bottle group. When the number of continuous fillings in the fourth hydrogen storage bottle group is greater than or equal to the preset number, the third control valve, the first control sub-valve and the fourth control sub-valve are controlled to open, wherein the first control valve, the second control sub-valve and the third control sub-valve are closed; that is, the fourth hydrogen storage bottle group is connected to the outlet of the first pipeline through the fourth sub-pipeline, the first hydrogen storage bottle group is connected to the second sub-pipeline through the third pipeline, the third hydrogen storage bottle group is connected to the first sub-pipeline, and the fourth hydrogen storage bottle group is switched with the first hydrogen storage bottle group, and at this time, the first hydrogen storage bottle group and the third hydrogen storage bottle group are preferentially used for filling, and the fourth hydrogen storage bottle group is used for filling secondly. In this way, the refilling frequencies of the first hydrogen storage bottle group, the third hydrogen storage bottle group and the fourth hydrogen storage bottle group are similar, thereby reducing the difference in the remaining life of the first hydrogen storage bottle group, the third hydrogen storage bottle group and the fourth hydrogen storage bottle group. Compared with the prior art, when replacing the hydrogen storage bottle group, it is avoided that the refilling frequency of one or more hydrogen storage bottle groups is relatively small, which reduces waste and thus reduces the operating cost of the hydrogen refueling station.

[0052] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A hydrogen refueling station, characterized in that: include: A first hydrogen storage bottle group and a first control valve, wherein the end of the first hydrogen storage bottle group is connected to a first pipeline, and the first control valve is arranged on the first pipeline; a second hydrogen storage bottle group and a second control valve, wherein a second pipeline is provided at the end of the second hydrogen storage bottle group, and the second control valve is provided on the second pipeline; A third control valve and a fourth control valve, the end of the first hydrogen storage bottle group is connected to the outlet of the second pipeline through a third pipeline, and the third control valve is arranged on the third pipeline; the end of the second hydrogen storage bottle group is connected to the outlet of the first pipeline through a fourth pipeline, and the fourth control valve is arranged on the fourth pipeline; When the number of continuous fillings of the second hydrogen storage bottle group is greater than or equal to a preset number, the first control valve and the second control valve are controlled to be closed, and the third control valve and the fourth control valve are controlled to be opened; When the number of continuous fillings of the first hydrogen storage bottle group is greater than or equal to the preset number of times, the third control valve and the fourth control valve are controlled to be closed, and the first control valve and the second control valve are controlled to be opened.

2. The hydrogen refueling station according to claim 1, characterized in that: The second hydrogen storage bottle group includes a third hydrogen storage bottle group and a fourth hydrogen storage bottle group, the second pipeline includes a first sub-pipeline and a second sub-pipeline, and the second control valve includes a first control sub-valve and a second control sub-valve; The first sub-pipeline is arranged at the end of the third hydrogen storage bottle group, and the first control sub-valve is arranged on the first sub-pipeline; the second sub-pipeline is arranged at the end of the fourth hydrogen storage bottle group, and the second control sub-valve is arranged on the second sub-pipeline; the outlet of the third pipeline is respectively connected to the outlets of the first sub-pipeline and the second sub-pipeline.

3. The hydrogen refueling station according to claim 2, characterized in that: The fourth control valve includes a third control sub-valve and a fourth control sub-valve, and the fourth pipeline includes a third sub-pipeline and a fourth sub-pipeline; The third hydrogen storage bottle group is connected to the outlet of the first pipeline through the third sub-pipeline, and the third control sub-valve is arranged on the third sub-pipeline; the fourth hydrogen storage bottle group is connected to the outlet of the first pipeline through the fourth sub-pipeline, and the fourth control sub-valve is arranged on the fourth sub-pipeline; When the number of continuous fillings of the third hydrogen storage bottle group is greater than or equal to a preset number, the third control sub-valve, the third control valve and the second control sub-valve are controlled to open; When the number of continuous fillings of the fourth hydrogen storage bottle group is greater than or equal to a preset number, the third control valve, the first control sub-valve and the fourth control sub-valve are controlled to open; When the number of continuous fillings of the first hydrogen storage bottle group is greater than or equal to a preset number, the first control valve, the first control sub-valve and the second control sub-valve are controlled to open.

4. The hydrogen refueling station according to claim 3, characterized in that: It also includes a first pressure sensor, a second pressure sensor and a third pressure sensor. The first pressure sensor is arranged at the end of the first hydrogen storage bottle group, the second pressure sensor is arranged at the end of the third hydrogen storage bottle group, and the third pressure sensor is arranged at the end of the fourth hydrogen storage bottle group.

5. The hydrogen refueling station according to claim 4, characterized in that: Also included is a control device, wherein the first pressure sensor, the second pressure sensor and the third pressure sensor are respectively connected to the control device for communication; The first control valve, the second control valve, the third control valve and the fourth control valve are respectively connected to the control device for communication.

6. The hydrogen refueling station according to claim 1, characterized in that: It also includes a first compression device and a second compression device. The first compression device fills the first hydrogen storage bottle group with hydrogen through a first pipeline; the second compression device fills the second hydrogen storage bottle group with hydrogen through a second pipeline.

7. A method for filling a hydrogen storage bottle group at a hydrogen refueling station, based on the hydrogen refueling station according to any one of claims 1 to 6, characterized in that: include: Obtain the number of consecutive refills of the first hydrogen storage bottle group and the number of consecutive refills of the second hydrogen storage bottle group; When the number of continuous fillings of the second hydrogen storage bottle group is greater than or equal to a preset number, the first control valve and the second control valve are controlled to be closed, and the third control valve and the fourth control valve are controlled to be opened; When the number of continuous fillings of the first hydrogen storage bottle group is greater than or equal to a preset number, the third control valve and the fourth control valve are controlled to be closed, and the first control valve and the second control valve are controlled to be open.

8. The method for filling a hydrogen storage bottle group at a hydrogen filling station according to claim 7, characterized in that: The consecutive number of times the first hydrogen storage bottle is opened is the sum of the consecutive opening times of the first control valve and the third control valve.

9. The method for filling a hydrogen storage bottle group at a hydrogen filling station according to claim 7, characterized in that: The second hydrogen storage bottle group includes a third hydrogen storage bottle group and a fourth hydrogen storage bottle group; the second control valve includes a first control sub-valve and a second control sub-valve; the fourth control valve includes a third control sub-valve and a fourth control sub-valve; Obtaining the number of continuous fillings of the second hydrogen storage bottle group includes: obtaining the number of continuous fillings of the third hydrogen storage bottle group and the number of continuous fillings of the fourth hydrogen storage bottle group; wherein the number of continuous fillings of the third hydrogen storage bottle group is equal to the sum of the number of continuous openings of the first control sub-valve and the third control sub-valve; and the number of continuous fillings of the fourth hydrogen storage bottle group is equal to the sum of the number of continuous openings of the second control sub-valve and the fourth control sub-valve.

10. The method for filling a hydrogen storage bottle group at a hydrogen filling station according to claim 9, characterized in that: When the number of continuous fillings of the second hydrogen storage bottle group is greater than or equal to a preset number, the first control valve and the second control valve are controlled to be closed, and the third control valve and the fourth control valve are controlled to be opened; comprising: When the number of continuous fillings of the third hydrogen storage bottle is greater than or equal to a preset number, the third control sub-valve, the third control valve and the second control sub-valve are controlled to open, and the first control sub-valve, the fourth control sub-valve and the first control valve are controlled to close. When the number of continuous fillings of the fourth hydrogen storage bottle group is greater than or equal to a preset number of times, the third control valve, the first control sub-valve and the fourth control sub-valve are controlled to open, and the second control sub-valve, the third control sub-valve and the first control valve are controlled to close.

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