Fuel cell trailer with double hydrogen storage systems
By adding a second hydrogen storage system to the trailer and supplying gas in parallel with the main vehicle's hydrogen storage system, the problem of short driving range of existing heavy-duty hydrogen fuel cell vehicles is solved, achieving a longer driving range and higher operational safety.
Patent Information
- Application Number
- CN202510955640.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-07-11
- Publication Date
- 2025-09-12
AI Technical Summary
Existing heavy-duty hydrogen fuel cell vehicles with trailers have limited hydrogen reserves, resulting in short driving range and unable to meet operational requirements, especially in high-speed scenarios where the distance to hydrogen refueling stations is too long.
A second hydrogen storage system is added to the trailer and connected to the hydrogen storage system of the main vehicle through a combination of a breakaway valve and a metal hose, realizing parallel gas supply of the two hydrogen storage systems and increasing the hydrogen storage capacity of the entire vehicle.
It expands the hydrogen carrying capacity of the vehicle, increases the driving range, ensures that the hydrogen pipeline can be quickly cut off in an unexpected situation, prevents hydrogen leakage, and improves operational safety and hydrogen refueling efficiency.
Smart Images
Figure CN120621087A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the field of fuel cell vehicles, in particular to a fuel cell trailer with a dual hydrogen storage system. Background Art
[0002] Hydrogen energy is a secondary clean energy source. Its use in the automotive sector is already widespread, and its adoption is increasing year by year with policy promotion and the continuous improvement of infrastructure such as hydrogen refueling stations. However, in actual use, hydrogen fuel cell vehicles still face challenges such as short range per refueling, long distances between refueling stations on highways, and the inability of heavy-duty trucks to meet operational requirements. These issues are particularly prominent for heavy-duty vehicles with trailers.
[0003] At present, the hydrogen system of heavy-duty hydrogen fuel cell vehicles with trailers is generally located on the main vehicle. Due to the layout space, its hydrogen storage is limited. In order to ensure the operation efficiency, it is operated with trailers, which increases the load and hydrogen consumption of the vehicle, and greatly shortens the driving range, which seriously affects its actual promotion and application.
[0004] Therefore, a method or device that can solve the above problems is needed. Summary of the Invention
[0005] The present invention aims to address the above-mentioned deficiencies in the prior art and proposes a fuel cell trailer with a dual hydrogen storage system that has a simple structure, ingenious design, and reasonable layout. By adding a hydrogen storage system to the trailer, the hydrogen storage capacity of the entire vehicle is increased, allowing the vehicle to have a longer cruising range while ensuring safety.
[0006] The technical solution of the present invention is: a fuel cell trailer with a dual hydrogen storage system, comprising a main vehicle 1 and a trailer 2 connected thereto, characterized in that: the main vehicle 1 is provided with a first hydrogen storage system 3, the front of the trailer 2 is provided with a second hydrogen storage system 4, the main vehicle 1 is provided with a first hydrogen refueling port 5 connected to the inlet end of the first hydrogen storage system 3, and the trailer 2 is provided with a second hydrogen refueling port 6 connected to the inlet end of the second hydrogen storage system 4. The outlet end of the second hydrogen storage system 4 is also connected to a first connecting pipeline 7, on which a pressure reducing valve 8, a hydrogen supply switch 9 and a break valve 10 are sequentially provided. The break valve 10 is connected to a fixed interface 12 provided on the main vehicle 1 through a metal hose 11, and the fixed interface 12 is connected to the gas supply pipeline of the first hydrogen storage system 3 through a second connecting pipeline 13. The first hydrogen storage system 3 provides hydrogen to the hydrogen fuel cell on the main vehicle 1 through the gas supply pipeline, and a one-way valve 14 is also provided on the second connecting pipeline 13. Under the action of the one-way valve 14, hydrogen can only enter the first hydrogen storage system 3 from the second connecting pipeline 13. A pressure sensor 15 is provided on the first connecting pipe 7 between the pressure reducing valve 8 and the hydrogen supply switch 9, and a breaking wire 16 is connected between the breaking valve 10 and the fixed interface 12, and the length of the breaking wire 16 is less than the length of the metal hose 11. One end of the break wire 16 is electrically connected to the vehicle controller 17 on the main vehicle 1, and the other end is electrically connected to the hydrogen system controller 18 on the trailer 2. The hydrogen system controller 18 is also electrically connected to the hydrogen supply switch 9 and the pressure sensor 15.
[0007] Compared with the prior art, the present invention has the following advantages: The fuel cell trailer with dual hydrogen storage systems of this structure has a simple structure, ingenious design and reasonable layout. The fuel cell trailer with dual hydrogen storage systems of the present invention expands the hydrogen carrying capacity of the entire vehicle by setting a second hydrogen system on the trailer, which can enable the vehicle to have a longer driving range. In order to ensure safety, it adopts a pull-off valve and a metal hose combination structure between the main vehicle and the trailer. While facilitating the connection of the hydrogen pipeline between the main vehicle and the trailer, it can also perform corresponding repeated operations before accidentally breaking the hydrogen pipeline to prevent further harm and ensure operational safety. The above structure can be quickly cut off in the event of an accident to prevent hydrogen leakage and avoid secondary damage after the accident. At the same time, the output of the trailer's hydrogen storage system is reduced in pressure by a pressure reducing valve, thereby forming a low-pressure connection between the main vehicle and the trailer to ensure safety during the hydrogen supply process. In addition, two independent hydrogen refueling ports are set on the main vehicle and the trailer respectively, which can realize independent and simultaneous hydrogen refueling operations of the two hydrogen storage systems, reduce hydrogen refueling time, and improve hydrogen refueling efficiency. Moreover, the manufacturing process of this trailer system is simple and the manufacturing cost is low. Therefore, it can be said that it has multiple advantages and is particularly suitable for promotion and application in this field. Its market prospects are very broad. BRIEF DESCRIPTION OF THE DRAWINGS
[0008] Figure 1 It is a structural diagram of an embodiment of the present invention.
[0009] Figure 2 Schematic diagram of the connection structure of two hydrogen storage systems in an embodiment of the present invention. DETAILED DESCRIPTION
[0010] The specific embodiments of the present invention will be described below with reference to the accompanying drawings. Figure 1 、 Figure 2As shown: A fuel cell trailer with a dual hydrogen storage system includes a main vehicle 1 and a trailer 2 connected thereto. The main vehicle 1 is provided with a first hydrogen storage system 3, and the front of the trailer 2 is provided with a second hydrogen storage system 4. The main vehicle 1 is provided with a first hydrogen refueling port 5 connected to the inlet end of the first hydrogen storage system 3, and the trailer 2 is provided with a second hydrogen refueling port 6 connected to the inlet end of the second hydrogen storage system 4. The outlet end of the second hydrogen storage system 4 is also connected to a first connecting pipeline 7, on which a pressure reducing valve 8, a hydrogen supply switch 9 and a break valve 10 are sequentially provided. The break valve 10 is connected to a fixed interface 12 provided on the main vehicle 1 through a metal hose 11, and the fixed interface 12 is connected to the gas supply pipeline of the first hydrogen storage system 3 through a second connecting pipeline 13. The first hydrogen storage system 3 provides hydrogen to the hydrogen fuel cell on the main vehicle 1 through the gas supply pipeline, and a one-way valve 14 is also provided on the second connecting pipeline 13. Under the action of the one-way valve 14, hydrogen can only enter the first hydrogen storage system 3 from the second connecting pipeline 13. A pressure sensor 15 is provided on the first connecting pipe 7 between the pressure reducing valve 8 and the hydrogen supply switch 9, and a breaking wire 16 is connected between the breaking valve 10 and the fixed interface 12, and the length of the breaking wire 16 is less than the length of the metal hose 11. One end of the break wire 16 is electrically connected to the vehicle controller 17 on the main vehicle 1, and the other end is electrically connected to the hydrogen system controller 18 on the trailer 2. The hydrogen system controller 18 is also electrically connected to the hydrogen supply switch 9 and the pressure sensor 15.
[0011] The working process of the fuel cell trailer with dual hydrogen storage systems according to the embodiment of the present invention is as follows: Since the main vehicle 1 and the trailer 2 are respectively provided with two independent first hydrogen storage systems 3 and second hydrogen storage systems 4, and these two hydrogen storage systems are also each provided with a hydrogen refueling port (a first hydrogen refueling port 5 and a second hydrogen refueling port 6), during the hydrogen refueling operation, the two hydrogen storage systems can be hydrogenated simultaneously through the two hydrogen refueling ports, thereby effectively improving the hydrogenation efficiency; When the fuel cell trailer is traveling, the second hydrogen storage system 4 is connected to the gas supply line of the first hydrogen storage system 3 via the first connecting line 7, the metal hose 11, the fixed interface 12, and the second connecting line 13. That is, for the fuel cell of the fuel cell trailer, the first hydrogen storage system 3 and the second hydrogen storage system 4 are connected in parallel thereto, that is, both the first hydrogen storage system 3 and the second hydrogen storage system 4 can provide hydrogen for the fuel cell; When the second hydrogen storage system 4 is needed to supply hydrogen to the fuel cell, the hydrogen system controller 18 controls the hydrogen supply switch 9 to open. The hydrogen in the second hydrogen storage system 4 passes through the pressure reducing valve 8, the hydrogen supply switch 9 and the breakaway valve 10 in sequence, enters the metal hose 11, and enters the gas supply pipeline of the hydrogen fuel cell through the fixed interface 12 and the second connecting pipeline 13, thereby realizing the hydrogen supply operation for the fuel cell. During the above process, the hydrogen system controller 18 always monitors the value of the pressure sensor 14. If the pressure value detected by it is abnormal, the hydrogen system controller 18 will send a signal to the hydrogen supply switch 9 to control it to close. The one-way valve 14 provided on the second connecting pipeline 13 can prevent the reverse discharge of hydrogen in the first hydrogen storage system 3. On the one hand, it can ensure that the hydrogen in the first hydrogen storage system 3 does not enter the second hydrogen storage system 4. On the other hand, it can also ensure that the hydrogen in the main vehicle 1 does not leak when the vehicle is not hooked or the rear-end pipeline is abnormally disconnected. Since the length of the break wire 16 is shorter than that of the metal hose 11, once an abnormality occurs, the break wire 16 will be disconnected before the metal hose 11, and the metal hose 11 will not be subjected to force until the break wire 16 is completely disconnected. The vehicle controller 17 can monitor the conductivity of the break wire 16 in real time. If the break wire 16 is found to be broken, an emergency shutdown operation will be automatically performed. At the same time, the hydrogen system controller 18 also monitors the conductivity of the break wire 16 in real time. If it is found to be broken, a signal will be automatically sent to the hydrogen supply switch 9 to control it to be closed. Even if the main vehicle 1 and the trailer 2 are separated due to an abnormality, the breakaway valve 10 will be closed under the action of the hydrogen system controller 18 to prevent leakage from one side of the trailer 2 (ie, the second hydrogen storage system 4).
Claims
1. A fuel cell trailer with a dual hydrogen storage system, comprising a main vehicle (1) and a trailer (2) connected thereto, characterized in that: The main vehicle (1) is provided with a first hydrogen storage system (3), the front portion of the trailer (2) is provided with a second hydrogen storage system (4), the main vehicle (1) is provided with a first hydrogen refueling port (5) connected to the inlet end of the first hydrogen storage system (3), and the trailer (2) is provided with a second hydrogen refueling port (6) connected to the inlet end of the second hydrogen storage system (4). The outlet end of the second hydrogen storage system (4) is also connected to a first connecting pipeline (7), on which a pressure reducing valve (8), a hydrogen supply switch (9) and a breakaway valve (10) are sequentially arranged. The breakaway valve (10) is communicated with a fixed interface (12) arranged on the main vehicle (1) through a metal hose (11), and the fixed interface (12) is connected to the gas supply pipeline of the first hydrogen storage system (3) through a second connecting pipeline (13). The first hydrogen storage system (3) provides hydrogen to the hydrogen fuel cell on the main vehicle (1) through the gas supply pipeline, and a one-way valve (14) is also arranged on the second connecting pipeline (13). Under the action of the one-way valve (14), hydrogen can only enter the first hydrogen storage system (3) from the second connecting pipeline (13). A pressure sensor (15) is provided on the first connecting pipeline (7) between the pressure reducing valve (8) and the hydrogen supply switch (9), and a break wire (16) is connected between the break valve (10) and the fixed interface (12), and the length of the break wire (16) is less than the length of the metal hose (11). One end of the pull-off wire (16) is electrically connected to the vehicle controller (17) on the main vehicle (1), and the other end is electrically connected to the hydrogen system controller (18) on the trailer (2). The hydrogen system controller (18) is also electrically connected to the hydrogen supply switch (9) and the pressure sensor (15).