Hydrogen supply pipeline, vehicle and hydrogen supply pipeline control method

Abstract

The invention provides a hydrogen supply pipeline, a vehicle and a hydrogen supply pipeline control method. The hydrogen supply pipeline comprises a main pipeline; the first branch pipeline is communicated with the main pipeline and provides hydrogen for the fuel forklift; the second branch pipeline communicates with the main pipeline and provides hydrogen for the fuel forklift, and the pressurization filling equipment is arranged on the second branch pipeline; the third branch pipeline is communicated with the main pipeline and is used for providing hydrogen for a fuel cell of the vehicle; the pressure detection device is arranged at the hydrogen inlet, and when the hydrogen pressure value is larger than or equal to a first preset pressure value, the first branch pipeline provides hydrogen for the fuel forklift; when the hydrogen pressure value is larger than or equal to the second preset pressure value and smaller than the first preset pressure value, the second branch pipeline provides hydrogen for the fuel forklift and / or the third branch pipeline provides hydrogen for the fuel cell; and when the hydrogen pressure value is smaller than a second preset pressure value, the third branch pipeline provides hydrogen for the fuel cell. The problem that in the prior art, the intelligent degree of a hydrogen supply pipeline is low is solved.

Description

Technical Field

[0001] The present invention relates to the technical field of hydrogenation of hydrogen fuel cell vehicles, and in particular to a hydrogen supply pipeline, a vehicle and a hydrogen supply pipeline control method. Background Art

[0002] At present, hydrogen energy is a new energy with large reserves, high energy density and cleanliness. Vigorously developing the hydrogen energy industry is an important direction for the future low-carbon development of energy utilization. The hydrogen production, storage and utilization of hydrogen energy have become the priority industrial chains in the energy planning of countries around the world. Among them, the application of fuel cell forklifts is also increasing. Before using the fuel cell forklift, it is necessary to use the hydrogen supply pipeline to fill the fuel cell forklift with hydrogen.

[0003] However, the hydrogen supply pipeline in the prior art requires the staff to detect the hydrogen pressure in the pipeline by themselves to determine whether it is necessary to use a booster filling device to pressurize the hydrogen and then inject hydrogen into the fuel cell forklift. This not only increases the difficulty of operation for the staff, but also the function of the hydrogen supply pipeline is relatively single and cannot meet other usage requirements. Summary of the invention

[0004] The main purpose of the present invention is to provide a hydrogen supply pipeline, a vehicle and a hydrogen supply pipeline control method to solve the problem that the hydrogen supply pipeline in the prior art has a low intelligence level, which increases the difficulty of operation for staff and has a single function.

[0005] In order to achieve the above-mentioned object, according to one aspect of the present invention, a hydrogen supply pipeline is provided, comprising: a main pipeline, a first end of the main pipeline is a hydrogen inlet; a first branch pipeline, a first end of the first branch pipeline is connected to the second end of the main pipeline, and the second end of the first branch pipeline is used to provide hydrogen for a fuel forklift; a second branch pipeline, a first end of the second branch pipeline is connected to the second end of the main pipeline, and the second end of the second branch pipeline is used to provide hydrogen for the fuel forklift, and a booster filling device is arranged on the second branch pipeline; a third branch pipeline, a first end of the third branch pipeline is connected to the second end of the main pipeline, and the second end of the third branch pipeline is used to provide hydrogen for the fuel forklift. Supply hydrogen to power the vehicle; a pressure detection device, the pressure detection device is arranged at the hydrogen inlet to detect the hydrogen pressure value at the hydrogen inlet, when the hydrogen pressure value is greater than or equal to the first preset pressure value P1, the first branch pipeline provides hydrogen for the fuel forklift; when the hydrogen pressure value is greater than or equal to the second preset pressure value P2 and less than the first preset pressure value P1 or the hydrogen flow rate in the first branch pipeline is less than the preset flow rate value, the second branch pipeline provides hydrogen for the fuel forklift and / or the third branch pipeline provides hydrogen for the fuel cell; when the hydrogen pressure value is less than the second preset pressure value P2, the third branch pipeline provides hydrogen for the fuel cell.

[0006] Furthermore, the hydrogen supply pipeline also includes: a first control valve, which is arranged on the first branch pipeline to control the on-off state of the first branch pipeline and / or the flow rate or flow velocity of hydrogen in the first branch pipeline; a flow velocity detection device, which is arranged on the first branch pipeline to detect the flow velocity of hydrogen in the first branch pipeline.

[0007] Furthermore, the hydrogen supply pipeline also includes: a second control valve, which is arranged on the second branch pipeline to control the on-off state of the second branch pipeline and / or the flow rate or flow velocity of hydrogen in the second branch pipeline.

[0008] Furthermore, the hydrogen supply pipeline also includes: a third control valve, which is arranged on the third branch pipeline to control the on-off state of the third branch pipeline and / or the flow rate or flow rate of hydrogen in the third branch pipeline; a one-way valve, which is arranged on the third branch pipeline, and the conduction direction of the one-way valve is from the hydrogen inlet to the fuel cell.

[0009] Furthermore, the hydrogen supply pipeline also includes: a control module, which is electrically connected to the pressure detection device, the first control valve, the second control valve and the third control valve; wherein, when the hydrogen pressure value detected by the pressure detection device is greater than or equal to the first preset pressure value P1, the control module controls the first control valve to open; when the hydrogen pressure value detected by the pressure detection device is greater than or equal to the second preset pressure value P2 and less than the first preset pressure value P1 or the hydrogen flow rate in the first branch pipeline is less than the preset flow rate value, the control module controls the second control valve to open and / or controls the third control valve to open; when the hydrogen pressure value detected by the pressure detection device is less than the second preset pressure value P2, the control module controls the first control valve to close, controls the second control valve to close and controls the third control valve to open.

[0010] Furthermore, the first preset pressure value P1 is 35 MPa, and the second preset pressure value P2 is 5 MPa.

[0011] According to another aspect of the present invention, a vehicle is provided, comprising a vehicle body and a fuel cell, a hydrogen storage structure and a hydrogen supply pipeline arranged on the vehicle body, the hydrogen storage structure is connected to the hydrogen inlet of the hydrogen supply pipeline, and the third branch pipeline of the hydrogen supply pipeline is connected to the fuel cell to provide hydrogen to the fuel cell; wherein the hydrogen supply pipeline is the above-mentioned hydrogen supply pipeline.

[0012] According to another aspect of the present invention, a hydrogen supply pipeline control method is provided, which is applicable to the above-mentioned hydrogen supply pipeline, and the hydrogen supply pipeline control method comprises: obtaining a hydrogen pressure value at a hydrogen inlet of the hydrogen supply pipeline, and controlling a hydrogen supply mode of the hydrogen supply pipeline according to the hydrogen pressure value, the hydrogen supply mode comprising a first mode in which a first branch of the hydrogen supply pipeline provides hydrogen for a fuel forklift, a second mode in which a second branch of the hydrogen supply pipeline provides hydrogen for a fuel forklift, a third mode in which a third branch of the hydrogen supply pipeline provides hydrogen for a fuel cell of a vehicle, and a fourth mode in which the second branch provides hydrogen for a fuel forklift and the third branch provides hydrogen for a fuel cell; wherein, when the hydrogen supply pipeline is in the first mode, if the hydrogen flow rate in the first branch is less than a preset flow rate value, the hydrogen supply mode is controlled to switch to the second mode, or the third mode, or the fourth mode.

[0013] Furthermore, the method for controlling the hydrogen supply mode of the hydrogen supply pipeline according to the hydrogen pressure value includes: if the hydrogen pressure value is greater than or equal to the first preset pressure value P1, controlling the hydrogen supply pipeline to switch to the first mode; if the hydrogen pressure value is greater than or equal to the second preset pressure value P2 and less than the first preset pressure value P1, controlling the hydrogen supply pipeline to switch to the second mode, or the third mode, or the fourth mode; if the hydrogen pressure value is less than the second preset pressure value P2, controlling the hydrogen supply pipeline to switch to the third mode.

[0014] Further, when the hydrogen pressure value is less than the second preset pressure value P2 and the hydrogen supply pipeline is in the third mode, the vehicle is controlled to drive the hydrogen supply pipeline to travel to the hydrogen refueling station to replenish hydrogen into the hydrogen inlet.

[0015] According to the technical solution of the present invention, the hydrogen supply pipeline includes a main pipeline, a first branch pipeline, a second branch pipeline, a third branch pipeline and a pressure detection device. The first end of the main pipeline is a hydrogen inlet, the first end of the first branch pipeline is connected to the second end of the main pipeline, and the second end of the first branch pipeline is used to provide hydrogen for the fuel forklift. The first end of the second branch pipeline is connected to the second end of the main pipeline, and the second end of the second branch pipeline is used to provide hydrogen for the fuel forklift, and the booster filling device is arranged on the second branch pipeline. The first end of the third branch pipeline is connected to the second end of the main pipeline, and the second end of the third branch pipeline is used to provide hydrogen for the fuel cell of the vehicle to power the vehicle. The pressure detection device is arranged at the hydrogen inlet to detect the hydrogen pressure value at the hydrogen inlet. When the hydrogen pressure value is greater than or equal to the first preset pressure value P1, the first branch pipeline provides hydrogen for the fuel forklift; when the hydrogen pressure value is greater than or equal to the second preset pressure value P2 and less than the first preset pressure value P1 or the hydrogen flow rate in the first branch pipeline is less than the preset flow rate value, the second branch pipeline provides hydrogen for the fuel forklift and / or the third branch pipeline provides hydrogen for the fuel cell; when the hydrogen pressure value is less than the second preset pressure value P2, the third branch pipeline provides hydrogen for the fuel cell. In this way, the pressure detection device is installed at the hydrogen inlet to detect the hydrogen pressure value at the hydrogen inlet through the pressure detection device, and the branch pipeline put into use is automatically controlled according to the size relationship between the hydrogen pressure value and the first preset pressure value P1, the second preset pressure value P2 or the size relationship between the hydrogen flow rate in the first branch pipeline and the preset flow rate value. If the hydrogen pressure value is greater than or equal to the second preset pressure value P2 and less than the first preset pressure value P1 or the hydrogen flow rate in the first branch pipeline is less than the preset flow rate value, the second branch pipeline provides hydrogen for the fuel forklift and / or the third branch pipeline provides hydrogen for the fuel cell, thereby improving the intelligence level of the hydrogen supply pipeline, solving the problem of low intelligence level of the hydrogen supply pipeline in the prior art, which increases the difficulty of operation for the staff and has a single function, and reduces the difficulty of operation for the staff. At the same time, the hydrogen supply pipeline can not only provide hydrogen for the fuel forklift through the first branch pipeline or the second branch pipeline, but also provide hydrogen for the fuel cell of the vehicle through the third branch pipeline, so as to realize the running function of the vehicle carrying the hydrogen supply pipeline itself. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The drawings constituting a part of the present application are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0017] Figure 1 A structural schematic diagram of an embodiment of a hydrogen supply pipeline according to the present invention is shown.

[0018] The above drawings include the following reference numerals:

[0019] 10. Main pipeline; 11. Hydrogen inlet;

[0020] 21. The first branch pipeline; 22. The second branch pipeline; 23. The third branch pipeline;

[0021] 30. Fuel forklift;

[0022] 40. Fuel cells;

[0023] 51. First control valve; 52. Second control valve; 53. Third control valve; 54. Check valve;

[0024] 60. Pressurized filling equipment. DETAILED DESCRIPTION

[0025] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0026] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meanings as commonly understood by ordinary technicians in the technical field to which this application belongs.

[0027] In the present invention, unless otherwise specified, the directional words used, such as "up" and "down", usually refer to the directions shown in the drawings, or to the vertical, perpendicular or gravity directions; similarly, for ease of understanding and description, "left" and "right" usually refer to the left and right shown in the drawings; "inside" and "outside" refer to the inside and outside relative to the outline of each component itself, but the above directional words are not used to limit the present invention.

[0028] In order to solve the problem in the prior art that the hydrogen supply pipeline has a low intelligence level, which increases the difficulty of operation for staff and has a single function, the present application provides a hydrogen supply pipeline, a vehicle and a hydrogen supply pipeline control method.

[0029] like Figure 1As shown, the hydrogen supply pipeline includes a main pipeline 10, a first branch pipeline 21, a second branch pipeline 22, a third branch pipeline 23 and a pressure detection device. Among them, the first end of the main pipeline 10 is a hydrogen inlet 11, the first end of the first branch pipeline 21 is connected to the second end of the main pipeline 10, and the second end of the first branch pipeline 21 is used to provide hydrogen for the fuel forklift 30. The first end of the second branch pipeline 22 is connected to the second end of the main pipeline 10, and the second end of the second branch pipeline 22 is used to provide hydrogen for the fuel forklift 30. The boosting and filling device 60 is arranged on the second branch pipeline 22. The first end of the third branch pipeline 23 is connected to the second end of the main pipeline 10, and the second end of the third branch pipeline 23 is used to provide hydrogen for the fuel cell 40 of the vehicle to provide energy for the vehicle. The pressure detection device is arranged at the hydrogen inlet 11 to detect the hydrogen pressure value at the hydrogen inlet 11. When the hydrogen pressure value is greater than or equal to the first preset pressure value P1, the first branch pipeline 21 provides hydrogen to the fuel forklift 30; when the hydrogen pressure value is greater than or equal to the second preset pressure value P2 and less than the first preset pressure value P1 or the hydrogen flow rate in the first branch pipeline 21 is less than the preset flow rate value, the second branch pipeline 22 provides hydrogen to the fuel forklift 30 and / or the third branch pipeline 23 provides hydrogen to the fuel cell 40; when the hydrogen pressure value is less than the second preset pressure value P2, the third branch pipeline 23 provides hydrogen to the fuel cell 40.

[0030] By applying the technical solution of this embodiment, a pressure detection device is installed at the hydrogen inlet 11 to detect the hydrogen pressure value at the hydrogen inlet 11 through the pressure detection device, and the branch pipeline put into use is automatically controlled according to the size relationship between the hydrogen pressure value and the first preset pressure value P1, the second preset pressure value P2, or the size relationship between the hydrogen flow rate in the first branch pipeline 21 and the preset flow rate value. If the hydrogen pressure value is greater than or equal to the second preset pressure value P2 and less than the first preset pressure value P1 or the hydrogen flow rate in the first branch pipeline 21 is less than the preset flow rate value, the second branch pipeline 22 provides hydrogen for the fuel forklift and / or the third branch pipeline 23 provides hydrogen for the fuel cell, thereby improving the intelligence level of the hydrogen supply pipeline, solving the problem that the hydrogen supply pipeline in the prior art has a low intelligence level, which increases the difficulty of operation for the staff and has a single function, and reduces the difficulty of operation for the staff. At the same time, the hydrogen supply pipeline can not only provide hydrogen to the fuel forklift through the first branch pipeline 21 or the second branch pipeline 22, but also provide hydrogen to the fuel cell 40 of the vehicle through the third branch pipeline 23, so as to realize the running function of the vehicle carrying the hydrogen supply pipeline itself.

[0031] In this embodiment, when the hydrogen pressure value is greater than or equal to the second preset pressure value P2 and less than the first preset pressure value P1 or the hydrogen flow rate in the first branch pipeline 21 is less than the preset flow rate value, if the hydrogen supply pipeline needs to provide hydrogen for the fuel forklift 30, the booster filling device 60 needs to be used to pressurize the hydrogen. When the hydrogen pressure value reaches the first preset pressure value P1, hydrogen can be provided for the fuel forklift 30. If the hydrogen supply pipeline needs to provide hydrogen for the fuel cell 40 of the vehicle carrying the hydrogen supply pipeline, the third branch pipeline 23 is controlled to be put into use. At the same time, the hydrogen supply pipeline under this pressure value can provide hydrogen for the fuel forklift 30 and the fuel cell 40 at the same time.

[0032] like Figure 1 As shown, the hydrogen supply pipeline also includes a first control valve 51 and a flow rate detection device. Among them, the first control valve 51 is arranged on the first branch pipeline 21 to control the on-off state of the first branch pipeline 21 and / or the flow rate or flow rate of hydrogen in the first branch pipeline 21. The flow rate detection device is arranged on the first branch pipeline 21 to detect the flow rate of hydrogen in the first branch pipeline 21. In this way, the on-off state of the first branch pipeline 21 and / or the flow rate or flow rate of hydrogen in the first branch pipeline 21 is controlled by the first control valve 51, and the flow rate of hydrogen in the first branch pipeline 21 is detected by the flow rate detection device, so as to realize the intelligent control of the hydrogen supply pipeline, and reduce the difficulty of operation for the staff.

[0033] like Figure 1 As shown, the hydrogen supply pipeline further includes a second control valve 52. The second control valve 52 is disposed on the second branch pipeline 22 to control the on-off state of the second branch pipeline 22 and / or the flow rate or flow velocity of hydrogen in the second branch pipeline 22. In this way, the on-off state of the second branch pipeline 22 and / or the flow rate or flow velocity of hydrogen in the second branch pipeline 22 is controlled by the second control valve 52 to realize intelligent control of the hydrogen supply pipeline, thereby reducing the difficulty of operation for the staff.

[0034] like Figure 1As shown, the hydrogen supply pipeline also includes a third control valve 53 and a one-way valve 54. Among them, the third control valve 53 is arranged on the third branch pipeline 23 to control the on-off state of the third branch pipeline 23 and / or the flow rate or flow velocity of hydrogen in the third branch pipeline 23. The one-way valve 54 is arranged on the third branch pipeline 23, and the conduction direction of the one-way valve 54 is from the hydrogen inlet 11 to the fuel cell 40. In this way, the on-off state of the third branch pipeline 23 and / or the flow rate or flow velocity of hydrogen in the third branch pipeline 23 are controlled by the third control valve 53 to realize the intelligent control of the hydrogen supply pipeline, reducing the difficulty of operation of the staff. At the same time, when the hydrogen supply pipeline provides hydrogen for the fuel forklift 30 and the fuel cell 40 at the same time, the above-mentioned setting of the one-way valve 54 can prevent hydrogen from flowing back from the fuel cell 40 to the fuel forklift 30, so as to ensure the amount of hydrogen provided to the fuel cell 40.

[0035] Optionally, the hydrogen supply pipeline also includes a control module, which is electrically connected to the pressure detection device, the first control valve 51, the second control valve 52 and the third control valve 53. Wherein, when the hydrogen pressure value detected by the pressure detection device is greater than or equal to the first preset pressure value P1, the control module controls the first control valve 51 to open; when the hydrogen pressure value detected by the pressure detection device is greater than or equal to the second preset pressure value P2 and less than the first preset pressure value P1 or the hydrogen flow rate in the first branch pipeline 21 is less than the preset flow rate value, the control module controls the second control valve 52 to open and / or controls the third control valve 53 to open; when the hydrogen pressure value detected by the pressure detection device is less than the second preset pressure value P2, the control module controls the first control valve 51 to close, controls the second control valve 52 to close and controls the third control valve 53 to open. In this way, the control module is used to perform automated and intelligent control on the hydrogen supply pipeline, thereby reducing the difficulty of operation for the staff and improving the automation of the hydrogen supply pipeline. At the same time, the control module controls the on-off state of the branch pipeline by controlling the corresponding control valve, thereby reducing the difficulty of logical control.

[0036] In this embodiment, the first preset pressure value P1 is 35 MPa, and the second preset pressure value P2 is 5 MPa.

[0037] The present application also provides a vehicle (not shown), including a vehicle body and a fuel cell 40 arranged on the vehicle body, a hydrogen storage structure and a hydrogen supply pipeline, the hydrogen storage structure is connected to the hydrogen inlet 11 of the hydrogen supply pipeline, and the third branch pipeline 23 of the hydrogen supply pipeline is connected to the fuel cell 40 for providing hydrogen to the fuel cell 40. Among them, the hydrogen supply pipeline is the above-mentioned hydrogen supply pipeline. In this way, the hydrogen storage structure can provide hydrogen (energy supply) for the fuel cell 40 of the vehicle to ensure that the vehicle itself has the running function, and can also add hydrogen to the fuel forklift 30, thereby expanding the hydrogen filling range, so that the vehicle can fill the fuel forklift 30 at different positions with hydrogen. At the same time, the vehicle is powered by the hydrogen in the hydrogen storage structure, and there is no need to install additional energy supply fuel, which is convenient for the staff to maintain the vehicle.

[0038] Optionally, the vehicle is a fuel cell light truck.

[0039] The present application also provides a hydrogen supply pipeline control method, which is applicable to the above-mentioned hydrogen supply pipeline. The hydrogen supply pipeline control method includes:

[0040] The hydrogen pressure value at the hydrogen inlet 11 of the hydrogen supply pipeline is obtained, and the hydrogen supply mode of the hydrogen supply pipeline is controlled according to the hydrogen pressure value, the hydrogen supply mode including a first mode in which the first branch pipeline 21 of the hydrogen supply pipeline provides hydrogen for the fuel forklift 30, a second mode in which the second branch pipeline 22 of the hydrogen supply pipeline provides hydrogen for the fuel forklift 30, a third mode in which the third branch pipeline 23 of the hydrogen supply pipeline provides hydrogen for the fuel cell 40 of the vehicle, and a fourth mode in which the second branch pipeline 22 provides hydrogen for the fuel forklift 30 and the third branch pipeline 23 provides hydrogen for the fuel cell 40; wherein, when the hydrogen supply pipeline is in the first mode, if the hydrogen flow rate in the first branch pipeline 21 is less than the preset flow rate value, the hydrogen supply mode is controlled to switch to the second mode, the third mode, or the fourth mode.

[0041] Specifically, a pressure detection device is installed at the hydrogen inlet 11 to detect the hydrogen pressure value at the hydrogen inlet 11 through the pressure detection device, and the branch pipeline put into use is automatically controlled according to the size relationship between the hydrogen pressure value and the first preset pressure value P1, the second preset pressure value P2, or the size relationship between the hydrogen flow rate in the first branch pipeline 21 and the preset flow rate value. For example, when the hydrogen pressure value is greater than or equal to the second preset pressure value P2 and less than the first preset pressure value P1, or the hydrogen flow rate in the first branch pipeline 21 is less than the preset flow rate value, the second branch pipeline 22 provides hydrogen for the fuel forklift and / or the third branch pipeline 23 provides hydrogen for the fuel cell, thereby improving the intelligence level of the hydrogen supply pipeline, solving the problem that the hydrogen supply pipeline in the prior art has a low intelligence level, increases the difficulty of operation for the staff, and has a single function, and reduces the difficulty of operation for the staff. At the same time, the hydrogen supply pipeline can not only provide hydrogen to the fuel forklift through the first branch pipeline 21 or the second branch pipeline 22, but also provide hydrogen to the fuel cell of the vehicle through the third branch pipeline 23, so as to realize the running function of the vehicle carrying the hydrogen supply pipeline itself.

[0042] In this embodiment, the method for controlling the hydrogen supply mode of the hydrogen supply pipeline according to the hydrogen pressure value includes:

[0043] If the hydrogen pressure value is greater than or equal to the first preset pressure value P1, the hydrogen supply pipeline is controlled to switch to the first mode;

[0044] If the hydrogen pressure value is greater than or equal to the second preset pressure value P2 and less than the first preset pressure value P1, the hydrogen supply pipeline is controlled to switch to the second mode, the third mode, or the fourth mode;

[0045] If the hydrogen pressure value is less than the second preset pressure value P2, the hydrogen supply pipeline is controlled to switch to the third mode.

[0046] Specifically, the hydrogen supply pipeline is controlled to enter different hydrogen supply modes according to the hydrogen pressure value at the hydrogen inlet 11, thereby meeting different usage requirements and working conditions.

[0047] For example, when the hydrogen pressure is 35MPa, the fuel forklift 30 is directly bypassed for flat pressure filling; when the hydrogen pressure is as low as 20MPa or the flat pressure filling flow rate is lower than 0.2kg / min, the booster filling device 60 is started to pressurize the hydrogen to ensure that the final pressure of the fuel forklift 30 is 35MPA. When the hydrogen pressure is between 5 and 20MPa, the booster filling device 60 is used to pressurize the hydrogen to 35MPA; when the booster filling device 60 is lower than 5MPa, the booster filling device 60 is stopped, and the remaining hydrogen is about 5kg, which is enough to ensure the amount of hydrogen required for the vehicle to fill up on the way to the hydrogen filling station. Among them, when the fuel cell 40 and the boost filling device 60 need to be used at the same time, since the hydrogen consumption of the boost filling device 60 is greater than that of the fuel cell 40, in order to prevent the hydrogen in the third branch pipeline 23 from being sucked away by the boost filling device 60, a one-way valve 54 is added to the third branch pipeline 23 to prevent the backflow of hydrogen, and the opening of each valve is controlled by the control module to distribute the hydrogen consumption in each branch pipeline to ensure the normal operation of each system without interfering with each other.

[0048] In this embodiment, when the hydrogen pressure value is less than the second preset pressure value P2 and the hydrogen supply pipeline is in the third mode, the vehicle is controlled to drive the hydrogen supply pipeline to travel to the hydrogen refueling station to replenish hydrogen into the hydrogen inlet 11 .

[0049] From the above description, it can be seen that the above embodiments of the present invention achieve the following technical effects:

[0050] The hydrogen supply pipeline includes a main pipeline, a first branch pipeline, a second branch pipeline, a third branch pipeline and a pressure detection device. The first end of the main pipeline is a hydrogen inlet, the first end of the first branch pipeline is connected to the second end of the main pipeline, and the second end of the first branch pipeline is used to provide hydrogen for the fuel forklift. The first end of the second branch pipeline is connected to the second end of the main pipeline, and the second end of the second branch pipeline is used to provide hydrogen for the fuel forklift, and the booster filling device is arranged on the second branch pipeline. The first end of the third branch pipeline is connected to the second end of the main pipeline, and the second end of the third branch pipeline is used to provide hydrogen for the fuel cell of the vehicle to power the vehicle. The pressure detection device is arranged at the hydrogen inlet to detect the hydrogen pressure value at the hydrogen inlet. When the hydrogen pressure value is greater than or equal to the first preset pressure value P1, the first branch pipeline provides hydrogen for the fuel forklift; when the hydrogen pressure value is greater than or equal to the second preset pressure value P2 and less than the first preset pressure value P1 or the hydrogen flow rate in the first branch pipeline is less than the preset flow rate value, the second branch pipeline provides hydrogen for the fuel forklift and / or the third branch pipeline provides hydrogen for the fuel cell; when the hydrogen pressure value is less than the second preset pressure value P2, the third branch pipeline provides hydrogen for the fuel cell. In this way, the pressure detection device is installed at the hydrogen inlet to detect the hydrogen pressure value at the hydrogen inlet through the pressure detection device, and the branch pipeline put into use is automatically controlled according to the size relationship between the hydrogen pressure value and the first preset pressure value P1, the second preset pressure value P2 or the size relationship between the hydrogen flow rate in the first branch pipeline and the preset flow rate value. If the hydrogen pressure value is greater than or equal to the second preset pressure value P2 and less than the first preset pressure value P1 or the hydrogen flow rate in the first branch pipeline is less than the preset flow rate value, the second branch pipeline provides hydrogen for the fuel forklift and / or the third branch pipeline provides hydrogen for the fuel cell, thereby improving the intelligence level of the hydrogen supply pipeline, solving the problem of low intelligence level of the hydrogen supply pipeline in the prior art, which increases the difficulty of operation for the staff and has a single function, and reduces the difficulty of operation for the staff. At the same time, the hydrogen supply pipeline can not only provide hydrogen for the fuel forklift through the first branch pipeline or the second branch pipeline, but also provide hydrogen for the fuel cell of the vehicle through the third branch pipeline, so as to realize the running function of the vehicle carrying the hydrogen supply pipeline itself.

[0051] Obviously, the embodiments described above are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0052] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0053] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the numbers used in this way can be interchanged where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein.

[0054] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. 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 hydrogen supply pipeline, characterized in that: include: A main pipeline (10), wherein a first end of the main pipeline (10) is a hydrogen inlet (11); a first branch pipeline (21), wherein a first end of the first branch pipeline (21) is connected to a second end of the main pipeline (10), and a second end of the first branch pipeline (21) is used to provide hydrogen to a fuel forklift (30); a second branch pipeline (22), wherein a first end of the second branch pipeline (22) is in communication with a second end of the main pipeline (10), the second end of the second branch pipeline (22) is used to provide hydrogen to the fuel forklift (30), and a pressurizing and filling device (60) is arranged on the second branch pipeline (22); a third branch pipeline (23), wherein a first end of the third branch pipeline (23) is in communication with a second end of the main pipeline (10), and a second end of the third branch pipeline (23) is used to provide hydrogen to a fuel cell (40) of a vehicle, so as to provide energy for the vehicle; A pressure detection device, the pressure detection device is arranged at the hydrogen inlet (11) to detect the hydrogen pressure value at the hydrogen inlet (11); when the hydrogen pressure value is greater than or equal to a first preset pressure value P1, the first branch pipeline (21) provides hydrogen to the fuel forklift (30); when the hydrogen pressure value is greater than or equal to a second preset pressure value P2 and less than the first preset pressure value P1 or the hydrogen flow rate in the first branch pipeline (21) is less than a preset flow rate value, the second branch pipeline (22) provides hydrogen to the fuel forklift (30) and / or the third branch pipeline (23) provides hydrogen to the fuel cell (40); when the hydrogen pressure value is less than the second preset pressure value P2, the third branch pipeline (23) provides hydrogen to the fuel cell (40).

2. The hydrogen supply pipeline according to claim 1, characterized in that: The hydrogen supply pipeline also includes: a first control valve (51), the first control valve (51) being arranged on the first branch pipeline (21) and being used for controlling the on / off state of the first branch pipeline (21) and / or the flow rate or flow velocity of hydrogen in the first branch pipeline (21); A flow rate detection device is arranged on the first branch pipeline (21) to detect the flow rate of hydrogen gas in the first branch pipeline (21).

3. The hydrogen supply pipeline according to claim 2, characterized in that: The hydrogen supply pipeline also includes: A second control valve (52), the second control valve (52) is arranged on the second branch pipeline (22) to control the on-off state of the second branch pipeline (22) and / or the flow rate or flow velocity of hydrogen in the second branch pipeline (22).

4. The hydrogen supply pipeline according to claim 3, characterized in that: The hydrogen supply pipeline also includes: a third control valve (53), the third control valve (53) being arranged on the third branch pipeline (23) to control the on / off state of the third branch pipeline (23) and / or the flow rate or flow velocity of hydrogen in the third branch pipeline (23); A one-way valve (54) is arranged on the third branch pipeline (23), and the conducting direction of the one-way valve (54) is from the hydrogen inlet (11) to the fuel cell (40).

5. The hydrogen supply pipeline according to claim 4, characterized in that: The hydrogen supply pipeline also includes: a control module electrically connected to the pressure detection device, the first control valve (51), the second control valve (52) and the third control valve (53); Wherein, when the hydrogen pressure value detected by the pressure detection device is greater than or equal to the first preset pressure value P1, the control module controls the first control valve (51) to open; When the hydrogen pressure value detected by the pressure detection device is greater than or equal to a second preset pressure value P2 and less than the first preset pressure value P1 or the hydrogen flow rate in the first branch pipeline (21) is less than a preset flow rate value, the control module controls the second control valve (52) to open and / or controls the third control valve (53) to open; When the hydrogen pressure value detected by the pressure detection device is less than the second preset pressure value P2, the control module controls the first control valve (51) to close, controls the second control valve (52) to close, and controls the third control valve (53) to open.

6. The hydrogen supply pipeline according to claim 1, characterized in that: The first preset pressure value P1 is 35 MPa, and the second preset pressure value P2 is 5 MPa.

7. A vehicle, characterized in that: The vehicle comprises a vehicle body and a fuel cell (40) arranged on the vehicle body, a hydrogen storage structure and a hydrogen supply pipeline, wherein the hydrogen storage structure is connected to a hydrogen inlet (11) of the hydrogen supply pipeline, and a third branch pipeline (23) of the hydrogen supply pipeline is connected to the fuel cell (40) to provide hydrogen to the fuel cell (40); wherein the hydrogen supply pipeline is the hydrogen supply pipeline according to any one of claims 1 to 6.

8. A hydrogen supply pipeline control method, characterized in that: Applicable to the hydrogen supply pipeline according to any one of claims 1 to 6, the hydrogen supply pipeline control method comprises: Obtaining a hydrogen pressure value at a hydrogen inlet (11) of the hydrogen supply pipeline, and controlling a hydrogen supply mode of the hydrogen supply pipeline according to the hydrogen pressure value, the hydrogen supply mode comprising a first mode in which the first branch pipeline (21) of the hydrogen supply pipeline provides hydrogen for a fuel forklift (30), a second mode in which the second branch pipeline (22) of the hydrogen supply pipeline provides hydrogen for the fuel forklift (30), a third mode in which the third branch pipeline (23) of the hydrogen supply pipeline provides hydrogen for a fuel cell (40) of a vehicle, and a fourth mode in which the second branch pipeline (22) provides hydrogen for the fuel forklift (30) and the third branch pipeline (23) provides hydrogen for the fuel cell (40); Wherein, when the hydrogen supply pipeline is in the first mode, if the hydrogen flow rate in the first branch pipeline (21) is less than a preset flow rate value, the hydrogen supply mode is controlled to switch to the second mode, the third mode, or the fourth mode.

9. The hydrogen supply pipeline control method according to claim 8, characterized in that: The method for controlling the hydrogen supply mode of the hydrogen supply pipeline according to the hydrogen pressure value includes: If the hydrogen pressure value is greater than or equal to the first preset pressure value P1, the hydrogen supply pipeline is controlled to switch to the first mode; If the hydrogen pressure value is greater than or equal to the second preset pressure value P2 and less than the first preset pressure value P1, the hydrogen supply pipeline is controlled to switch to the second mode, the third mode, or the fourth mode; If the hydrogen pressure value is less than the second preset pressure value P2, the hydrogen supply pipeline is controlled to switch to the third mode.

10. The hydrogen supply pipeline control method according to claim 9, characterized in that: When the hydrogen pressure value is less than the second preset pressure value P2 and the hydrogen supply pipeline is in the third mode, the vehicle is controlled to drive the hydrogen supply pipeline to travel to a hydrogen refueling station to replenish hydrogen into the hydrogen inlet (11).

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