阅读说明：本技术 一种重卡用车载氢系统及执行机构 (Heavy truck is with on-vehicle hydrogen system and actuating mechanism ) 是由 尹国木 张甜甜 孙成斌 李国庆 申珅 赵同军 于 2021-09-18 设计创作，主要内容包括：本发明提供一种重卡用车载氢系统及执行机构,包括：支撑框架,支撑框架设有内部设有多个隔层；每个隔层安装有至少两瓶氢气瓶；氢气瓶的进出气口之间通过氢气管路串联连接,氢气管路上设有管阀件和减压阀；氢气管路的端部设有加氢口；支撑框架的顶部及框架四周分别安装有碰撞传感器；氢系统控制器分别与每个碰撞传感器连接,当氢气瓶碰撞并触发碰撞传感器时,碰撞传感器向氢系统控制器发送碰撞加速度信号；氢系统控制器与管阀件连接,氢系统控制器在接收到碰撞加速度信号之后,控制管阀件关闭。整车控制器向燃料电池发出紧急停机指令,同时在整车仪表上报碰撞故障,使驾驶人员了解车辆的氢气瓶状态,避免出现危险事故。(The invention provides a heavy truck vehicle-mounted hydrogen system and an actuating mechanism, comprising: the supporting frame is provided with a plurality of interlayers inside; each interlayer is provided with at least two hydrogen cylinders; the gas inlet and outlet of the hydrogen cylinder are connected in series through a hydrogen pipeline, and a pipe valve and a pressure reducing valve are arranged on the hydrogen pipeline; the end part of the hydrogen pipeline is provided with a hydrogenation port; collision sensors are respectively arranged at the top of the supporting frame and the periphery of the frame; the hydrogen system controller is respectively connected with each collision sensor, and when the hydrogen cylinder collides and triggers the collision sensors, the collision sensors send collision acceleration signals to the hydrogen system controller; the hydrogen system controller is connected with the pipe valve, and the hydrogen system controller controls the pipe valve to close after receiving the collision acceleration signal. The vehicle control unit sends an emergency stop instruction to the fuel cell, and simultaneously reports a collision fault on the vehicle instrument, so that a driver can know the state of a hydrogen cylinder of the vehicle, and dangerous accidents are avoided.)

1. The utility model provides a heavily on-vehicle hydrogen system and actuating mechanism for card which characterized in that includes: the supporting frame is provided with a plurality of interlayers inside; each interlayer is provided with at least two hydrogen cylinders;

a space is arranged between the hydrogen cylinder and the support frame bracket;

the gas inlet and outlet of the hydrogen cylinder are connected in series through a hydrogen pipeline, and a pipe valve and a pressure reducing valve are arranged on the hydrogen pipeline; the gas inlet and outlet of the hydrogen cylinder are connected with a cylinder valve;

the end part of the hydrogen pipeline is provided with a hydrogenation port;

collision sensors are respectively arranged at the top of the supporting frame and the periphery of the frame;

the support frame is also provided with a hydrogen system controller;

the hydrogen system controller is respectively connected with each collision sensor, and when the hydrogen cylinder collides and triggers the collision sensors, the collision sensors send collision acceleration signals to the hydrogen system controller;

the hydrogen system controller is respectively connected with the cylinder valve and the tube valve, and controls the tube valve and the cylinder valve to be closed after receiving the collision acceleration signal; the hydrogen system controller is also connected with the pressure reducing valve, and the opening degree of the pressure reducing valve is adjusted according to the pressure regulating control instruction.

2. The on-board hydrogen system for heavy truck and actuator according to claim 1,

the bottom of the supporting frame is connected with a mounting bracket and fixedly arranged on a heavy truck through the mounting bracket;

the mounting bracket is provided with a connecting plate, a hydrogenation port at the end part of the hydrogen pipeline is arranged on the connecting plate, and the hydrogenation port is matched and connected with the hydrogenation gun; the hydrogen cylinder is inflated.

3. The on-board hydrogen system for heavy truck and actuator according to claim 2,

a check valve and a hydrogenation pressure gauge are also arranged on the hydrogen pipeline;

the air inlet and outlet of the hydrogen cylinder are connected with the hydrogen pipeline through the cutting sleeve joint,

the gas inlet and outlet of the hydrogen cylinder are connected with a flow limiting valve and a filter;

the hydrogenation gun sequentially passes through the hydrogenation port, the check valve, the hydrogenation pressure gauge, the filter, the flow limiting valve and the cylinder valve to hydrogenate the hydrogen cylinder.

4. The on-board hydrogen system for heavy truck and actuator according to claim 1,

the pressure reducing valve is provided with a safety valve which is connected with a discharge pipeline; the discharge pipeline is provided with a one-way valve;

setting the relief pressure of a relief valve to be 13bar to 16 bar; when the pressure exceeds 13bar to 16bar, the hydrogen is discharged to the atmosphere through a safety valve and a discharge line.

5. The on-board hydrogen system for heavy truck and actuator according to claim 3,

a high-pressure sensor is arranged between the cylinder valve and the air inlet and outlet of the hydrogen cylinder;

the hydrogen system controller is connected with the high-pressure sensor, the high-pressure sensor monitors the gas outlet pressure of the hydrogen cylinder in real time and transmits the gas outlet pressure to the hydrogen system controller, and the hydrogen system controller displays the gas outlet pressure of the hydrogen cylinder.

6. The on-board hydrogen system for heavy truck and actuator according to claim 1,

a hydrogen concentration sensor is arranged at the top of the supporting frame;

the hydrogen system controller is connected with the hydrogen concentration sensor, and the hydrogen concentration sensor monitors the hydrogen concentration around the supporting frame in real time, transmits the hydrogen concentration to the hydrogen system controller and displays the hydrogen concentration;

when the hydrogen concentration exceeds the threshold value, alarm prompt is carried out, and meanwhile, the hydrogen system controller controls the cylinder valve to be closed.

7. The on-board hydrogen system for heavy truck and actuator according to claim 2,

the mounting bracket is provided with two parallel supporting legs, and a cross brace is arranged between the supporting legs;

the bottom of each supporting leg is connected with a reinforced supporting plate, and the reinforced supporting plate is connected with a U-shaped mounting connecting piece;

a top fixing hole site is arranged on the top plate of the reinforcing support plate;

a back mounting hole is formed in the back plate of the reinforcing support plate;

a front fixing hole is formed in a U-shaped groove of the U-shaped mounting connecting piece;

the U-shaped end of the U-shaped mounting connecting piece is provided with a side wing fixing hole.

8. The on-board hydrogen system for heavy truck and actuator according to claim 7,

side supporting frames are arranged on the side parts of the supporting frames;

the side supporting frames extend towards the bottom of the supporting frame and are as high as the mounting frame in height;

the side supporting frame is connected with a side upright post;

the bottom of the side supporting frame is connected with the supporting secondary beam;

the bottom of the supporting auxiliary beam, the bottom of the side upright post and the bottom of the mounting bracket are respectively connected with the frame girder.

9. The on-board hydrogen system for heavy truck and actuator according to claim 1 or 2,

and a manual ball valve is also arranged on the hydrogen pipeline.

10. The on-board hydrogen system for heavy truck and actuator according to claim 1 or 2,

the hydrogen pipeline is also provided with an electromagnetic valve which is arranged close to the pressure reducing valve;

the hydrogen system controller is connected with the electromagnetic valve to control the on-off of the electromagnetic valve.

Technical Field

The invention relates to the field of new energy vehicles, in particular to a vehicle-mounted hydrogen system for a heavy truck and an actuating mechanism.

Background

At present, environmental pollution is aggravated, and greenhouse gas emission is high, so that the new energy automobile needs to be popularized and applied. Pure electric, hybrid power and fuel cells are the technical routes of three new energy vehicles, wherein the fuel cell vehicle has the characteristics of long driving range and zero pollution, is particularly suitable for the field of commercial vehicle types, receives wide attention and starts to be actively researched and developed.

The vehicle-mounted hydrogen system is an important component of the fuel cell vehicle, and can store hydrogen required by the fuel cell during operation and provide the hydrogen according to the hydrogen pressure and flow demand of the fuel cell. At present, the hydrogen storage modes of the vehicle-mounted hydrogen system mainly include high-pressure hydrogen storage, liquid hydrogen storage, material adsorption hydrogen storage, metal hydrogen storage and the like. The high-pressure hydrogen storage is to store hydrogen in a gas cylinder at a certain pressure, and when the high-pressure hydrogen storage is used, the pressure of the hydrogen is reduced to a specified pressure, and the common storage pressure is 35MPa and 70 MPa; the liquid hydrogen storage is to store hydrogen in a gas cylinder in a liquid form and gasify the liquid hydrogen when in use. As the hydrogen cylinder is arranged on the vehicle, the hydrogen cylinder is easy to roll and touch the frame or the box body in the driving process, if the collision force is large, the hydrogen cylinder can be leaked, and particularly, if the position of an air inlet and an air outlet of the hydrogen cylinder is separated from a pipeline, the hydrogen is leaked, and dangerous accidents are easy to happen.

Disclosure of Invention

The invention discloses a novel hydrogen storage system which is invented by taking common high-pressure hydrogen storage as a technical route and combining a fuel cell heavy truck development rule, so as to solve the general arrangement pain point of a whole vehicle, realize modular design and solve the collision hydrogen safety problem required by regulations.

The system comprises: the supporting frame is provided with a plurality of interlayers inside; each interlayer is provided with at least two hydrogen cylinders;

a space is arranged between the hydrogen cylinder and the support frame bracket;

the gas inlet and outlet of the hydrogen cylinder are connected in series through a hydrogen pipeline, and a pipe valve and a pressure reducing valve are arranged on the hydrogen pipeline;

the gas inlet and outlet of the hydrogen cylinder are connected with a cylinder valve;

the end part of the hydrogen pipeline is provided with a hydrogenation port;

collision sensors are respectively arranged at the top of the supporting frame and the periphery of the frame;

the support frame is also provided with a hydrogen system controller;

the hydrogen system controller is respectively connected with each collision sensor, and when the hydrogen cylinder collides and triggers the collision sensors, the collision sensors send collision acceleration signals to the hydrogen system controller;

the hydrogen system controller is respectively connected with the cylinder valve and the tube valve, and controls the tube valve and the cylinder valve to be closed after receiving the collision acceleration signal; the hydrogen system controller is also connected with the pressure reducing valve, and the opening degree of the pressure reducing valve is adjusted according to the pressure regulating control instruction.

Further, the bottom of the supporting frame is connected with a mounting bracket and fixedly arranged on a heavy truck through the mounting bracket;

the mounting bracket is provided with a connecting plate, a hydrogenation port at the end part of the hydrogen pipeline is arranged on the connecting plate, and the hydrogenation port is matched and connected with the hydrogenation gun; the hydrogen cylinder is inflated.

Further, a check valve and a hydrogenation pressure gauge are also arranged on the hydrogen pipeline;

the air inlet and outlet of the hydrogen cylinder are connected with the hydrogen pipeline through the cutting sleeve joint,

the gas inlet and outlet of the hydrogen cylinder are connected with a cylinder valve, a flow limiting valve and a filter;

the hydrogenation gun sequentially passes through the hydrogenation port, the check valve, the hydrogenation pressure gauge, the filter, the flow limiting valve and the cylinder valve to hydrogenate the hydrogen cylinder.

It is further noted that the relief valve is provided with a relief valve, and the relief valve is connected with a relief pipeline; the discharge pipeline is provided with a one-way valve;

setting the relief pressure of a relief valve to be 13bar to 16 bar; when the pressure exceeds 13bar to 16bar, the hydrogen is discharged to the atmosphere through a safety valve and a discharge line.

It is further noted that a high pressure sensor is arranged between the cylinder valve and the air inlet and outlet of the hydrogen cylinder;

the hydrogen system controller is connected with the high-pressure sensor, the high-pressure sensor monitors the gas outlet pressure of the hydrogen cylinder in real time and transmits the gas outlet pressure to the hydrogen system controller, and the hydrogen system controller displays the gas outlet pressure of the hydrogen cylinder.

It is further noted that a hydrogen concentration sensor is arranged at the top of the supporting frame;

the hydrogen system controller is connected with the hydrogen concentration sensor, and the hydrogen concentration sensor monitors the hydrogen concentration around the supporting frame in real time, transmits the hydrogen concentration to the hydrogen system controller and displays the hydrogen concentration;

when the hydrogen concentration exceeds the threshold value, alarm prompt is carried out, and meanwhile, the hydrogen system controller controls the cylinder valve to be closed.

It should be further noted that the mounting bracket is provided with two parallel supporting legs, and a cross brace is arranged between the supporting legs;

the bottom of each supporting leg is connected with a reinforced supporting plate, and the reinforced supporting plate is connected with a U-shaped mounting connecting piece;

a top fixing hole site is arranged on the top plate of the reinforcing support plate;

a back mounting hole is formed in the back plate of the reinforcing support plate;

a front fixing hole is formed in a U-shaped groove of the U-shaped mounting connecting piece;

the U-shaped end of the U-shaped mounting connecting piece is provided with a side wing fixing hole.

It is further noted that side supporting frames are arranged on the side parts of the supporting frames;

the side supporting frames extend towards the bottom of the supporting frame and are as high as the mounting frame in height;

the side supporting frame is connected with a side upright post;

the bottom of the side supporting frame is connected with the supporting secondary beam;

the bottom of the supporting auxiliary beam, the bottom of the side upright post and the bottom of the mounting bracket are respectively connected with the frame girder.

It should be further noted that a manual ball valve is further arranged on the hydrogen pipeline.

The hydrogen pipeline is also provided with an electromagnetic valve which is arranged close to the pressure reducing valve;

the hydrogen system controller is connected with the electromagnetic valve to control the on-off of the electromagnetic valve.

According to the technical scheme, the invention has the following advantages:

in the vehicle-mounted hydrogen system and the executing mechanism for the heavy truck, if a vehicle turns or jolts, the hydrogen cylinder can move, for example, the hydrogen cylinder collides with the supporting frame, so that a pipe valve can be closed to avoid danger, and the hydrogen system controller can send collision information to the vehicle controller through connection with the vehicle controller to display collision acceleration signals on an instrument panel in a cab. If the pipe valve is closed, the opening and closing state of the pipe valve is also displayed on an instrument panel of the cab, so that a driver can know the state of the hydrogen cylinders 3 of the vehicle, and dangerous accidents are avoided. Because the hydrogen system contains the high-pressure container, the running condition of the vehicle is considered to be complex, and the hydrogen system is prevented from being threatened by vehicle collision.

The system structure designed by the invention can be conveniently integrated with a mechanical structure of a whole vehicle while ensuring the structural strength of the system.

The invention has compact and reasonable structure, the system is provided with side impact and head impact collision sensors, and can start a safety program according to the collision grade to meet the use requirement of a vehicle-mounted hydrogen system. The lower part of the system can be provided with a power battery or a fuel battery, which is beneficial to improving the modularized design of the whole vehicle structure.

Drawings

In order to more clearly illustrate the technical solution of the present invention, the drawings used in the description will be briefly introduced, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained based on these drawings without creative efforts.

FIG. 1 is a schematic diagram of a vehicle-mounted hydrogen system and an actuator for a heavy truck;

FIG. 2 is another side view of the hydrogen system and the actuator;

FIG. 3 is a schematic diagram of the on-board hydrogen system for heavy truck and the actuator cooperating with the fuel cell;

FIG. 4 is a schematic view of a reinforcing support plate;

FIG. 5 is a schematic view of a reinforcing support plate and U-mount connector;

fig. 6 is a schematic diagram of an embodiment of a heavy truck onboard hydrogen system and an actuator.

Description of reference numerals:

1-supporting frame, 2-interlayer, 3-hydrogen cylinder, 4-hydrogen pipeline, 5-collision sensor, 6-hydrogen system controller, 7-pipe valve, 8-pressure reducing valve, 9-vehicle controller, 10-mounting bracket, 11-connecting plate, 12-hydrogenation port, 13-hydrogen concentration sensor, 14-solenoid valve, 15-high pressure sensor, 16-cylinder valve, 17-fuel cell, 18-supporting auxiliary beam, 19-frame crossbeam, 21-supporting leg, 22-cross brace, 23-reinforcing supporting plate, 24-U mounting connecting piece, 25-top fixing hole position, 26-back mounting hole, 27-front fixing hole, 28-side supporting frame and 29-side upright post.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The elements and algorithm steps of the various examples described in the embodiments disclosed in the vehicle-mounted hydrogen system and the actuator for heavy trucks provided by the present invention can be implemented in electronic hardware, computer software, or a combination of both, and in the above description, the components and steps of the various examples have been generally described in terms of functions in order to clearly illustrate the interchangeability of hardware and software. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the implementation. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present invention.

The block diagrams shown in the drawings of the heavy truck-mounted hydrogen system and the actuating mechanism provided by the invention are only functional entities and do not necessarily correspond to physically independent entities. I.e. these functional entities may be implemented in the form of software, or in one or more hardware modules or integrated circuits, or in different networks and/or processor means and/or microcontroller means.

In the present invention, it should be understood that the disclosed system, apparatus and method can be implemented in other ways. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the units is only one logical division, and other divisions may be realized in practice, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may also be an electric, mechanical or other form of connection.

As shown in fig. 1 to 6, the present invention provides a heavy truck onboard hydrogen system and an actuator, including: the supporting frame 1 is provided with a plurality of interlayer 2; the interlayer 2 adopts a parting bead or a clapboard to realize the separation of the inside of the supporting frame 1, so that enough hydrogen cylinders 3 can be placed. The hydrogen cylinders 3 may be bound to the support frame 1 or otherwise secured within the support frame 1.

For example, in terms of hydrogen storage parameters of a hydrogen system, 6 210L 35Mpa hydrogen bottles are selected for the system, and the total hydrogen storage capacity of the system is about 30 kg.

Each interlayer 2 is provided with at least two hydrogen cylinders 3; a space is arranged between the hydrogen cylinder 3 and the support frame bracket; the gas inlets and the gas outlets of the hydrogen cylinders 3 are connected in series through a hydrogen pipeline 4, and a pipe valve 7 and a pressure reducing valve 8 are arranged on the hydrogen pipeline 4; the gas inlet and outlet of the hydrogen cylinder are connected with a cylinder valve 16;

the end part of the hydrogen pipeline 4 is provided with a hydrogenation port 12; collision sensors 5 are respectively arranged at the top of the supporting frame 1 and the periphery of the frame; the collision sensor 5 may be provided in the front, rear, top, etc. of the support frame 1, and one collision sensor 5 may be provided at any position where the hydrogen cylinders 3 are likely to collide.

The support frame 1 is also provided with a hydrogen system controller 6; the hydrogen system controller 6 is respectively connected with each collision sensor 5, and when the hydrogen cylinders 3 collide and trigger the collision sensors 5, the collision sensors 5 send collision acceleration signals to the hydrogen system controller 6; the hydrogen system controller is respectively connected with the cylinder valve 16 and the tube valve, and controls the tube valve and the cylinder valve to be closed after receiving the collision acceleration signal; the hydrogen system controller is also connected with the pressure reducing valve, and the opening degree of the pressure reducing valve is adjusted according to the pressure regulating control instruction.

If the vehicle turns or bumps, the hydrogen cylinders 3 can move, for example, collide with the support frame 1, in order to avoid danger, the pipe valve 7 can be closed, and the hydrogen system controller 6 can transmit collision information to the vehicle controller 9 through connection with the vehicle controller 9, so as to display a collision acceleration signal on an instrument panel of a cab. If the pipe valve 7 is closed, the opening and closing states of the pipe valve 7 are displayed on an instrument panel of the cab, so that a driver can know the state of the hydrogen cylinders 3 of the vehicle, and dangerous accidents are avoided.

Illustratively, the hydrogen system is particularly integrated with a collision safety system due to the fact that the hydrogen system comprises a high-pressure container, and the hydrogen system is prevented from generating safety threat to the hydrogen system when the vehicle is collided in consideration of complex running conditions of the vehicle. The system consists of a collision sensor 5 and a collision sensor 5 controller, and is directly connected with a hydrogen system through a bus. In consideration of the large volume of the hydrogen system, the invention particularly adopts 6 collision sensors 5 which are respectively arranged at the front side, the left side and the right side of the hydrogen system and can monitor the direct collision and the side collision of the hydrogen system. When a collision occurs, the collision sensor 5 can directly send an acceleration signal generated during the collision to the hydrogen system controller 6, after the hydrogen system controller 6 receives the acceleration signal, the hydrogen system controller stops supplying gas to the fuel cell after the pressure reducing valve 8 is cut off through a preset control strategy, meanwhile, the hydrogen system controller 6 sends a control signal request to the vehicle control unit 9 through a bus, the vehicle control unit 9 sends an emergency stop instruction to the fuel cell after receiving the request signal, and simultaneously reports a collision fault on a vehicle instrument to request a driver to stop in time and quickly get away from the vehicle.

The hydrogen system controller 6 in the present invention may be implemented by using at least one of an Application Specific Integrated Circuit (ASIC), a Digital Signal Processor (DSP), a Digital Signal Processing Device (DSPD), a Programmable Logic Device (PLD), a Field Programmable Gate Array (FPGA), a processor, a controller, a microcontroller, a microprocessor, and an electronic unit designed to perform the functions described herein, and in some cases, such an implementation may be implemented in the controller. For a software implementation, the implementation such as a process or a function may be implemented with a separate software module that allows performing at least one function or operation. The software codes may be implemented by software applications (or programs) written in any suitable programming language, which may be stored in memory and executed by the controller.

As an embodiment of the present invention, the bottom of the supporting frame 1 is connected with a mounting bracket 10 and is fixedly arranged on a heavy truck through the mounting bracket 10; a connecting plate 11 is arranged on the mounting bracket 10, a hydrogenation port 12 at the end part of the hydrogen pipeline 4 is arranged on the connecting plate 11, and the hydrogenation port 12 is connected with a hydrogenation gun in a matching way; the hydrogen cylinders 3 are inflated.

The hydrogen pipeline 4 is also provided with a check valve and a hydrogenation pressure gauge; the gas inlet and outlet of the hydrogen cylinder 3 are connected with the hydrogen pipeline 4 through a cutting sleeve joint, and the gas inlet and outlet of the hydrogen cylinder 3 are connected with a cylinder valve, a flow limiting valve and a filter; the hydrogenation gun sequentially passes through a hydrogenation port 12, a check valve, a hydrogenation pressure gauge, a filter, a flow limiting valve and a cylinder valve to hydrogenate the hydrogen cylinder 3.

For example, the system hydrogenation port 12 is of TN 535 Mpa large flow type, and a hydrogenation gun of TN25 matched with the system hydrogenation port is selected to be connected with the system hydrogenation port during hydrogenation. High-pressure hydrogen enters the hydrogen pipeline 4 through the hydrogenation port 12, firstly passes through a check valve, a pressure gauge is arranged on the hydrogen pipeline 4, the pressure gauge is connected with the hydrogen system controller 6, and the hydrogenation pressure can be displayed in real time. The hydrogen respectively enters a flow limiting valve connected with the hydrogen bottle through a connected clamping sleeve joint and then enters the hydrogen bottle directly communicated with the bottle valve. A high-pressure sensor 15 is arranged between the cylinder valve and the air inlet and outlet of the hydrogen cylinder 3; the hydrogen system controller 6 is connected with the high-pressure sensor 15, the high-pressure sensor 15 monitors the gas outlet pressure of the hydrogen cylinders 3 in real time and transmits the gas outlet pressure to the hydrogen system controller 6, and the hydrogen system controller 6 displays the gas outlet pressure of the hydrogen cylinders 3. Because the high-pressure pipeline is communicated with the hydrogen bottle, the pressure in the high-pressure pipeline is the pressure in the hydrogen bottle.

In the invention, a hydrogen concentration sensor 13 is arranged at the top of the supporting frame 1; the hydrogen system controller 6 is connected with a hydrogen concentration sensor 13, and the hydrogen concentration sensor 13 monitors the hydrogen concentration around the supporting frame 1 in real time and transmits the hydrogen concentration to the hydrogen system controller 6 for display; when the hydrogen concentration exceeds the threshold value, alarm prompt is carried out, and meanwhile, the hydrogen system controller 6 controls the cylinder valve to be closed.

The hydrogen pipeline 4 is also provided with an electromagnetic valve 14, and the electromagnetic valve 14 is arranged close to the pressure reducing valve 8; the hydrogen system controller 6 is connected with the electromagnetic valve 14 and controls the on-off of the electromagnetic valve 14.

For the invention, the system is subjected to safety protection, the system is provided with multiple safety protection mechanisms, and 1) when the pressure of the hydrogen gas after pressure reduction exceeds a specified hydrogen supply pressure limit value, the hydrogen gas is automatically emptied through a pressure release valve; 2) when the temperature in the hydrogen cylinder 3 is over-high, the cylinder valve can be automatically opened to be emptied; 3) the top end of the system is provided with two hydrogen concentration sensors 13, when hydrogen leaks from a hydrogen bottle or an inner pipe valve 7 of the hydrogen system, the hydrogen concentration sensors 13 send different signals according to the monitored concentration levels, the hydrogen system controller 6 determines to send 1-level, 2-level or 3-level fault codes according to the received signal levels, the whole vehicle controller 9 executes corresponding stop actions according to the fault codes, 4) the hydrogen system is provided with front collision and side collision sensors, when the whole vehicle collides in front or in side, the collision sensor 5 sends collision signals to the collision sensor 5, the collision sensor 5 sends the signals to the hydrogen system controller 6 after processing, and the hydrogen system controls to cut off hydrogen supply correspondingly according to the collision signal levels.

In the invention, during hydrogen supply, the system carries out self-checking after receiving a control instruction of a vehicle control unit 9, after the self-checking is free of faults, an electromagnetic valve 14 at the rear end of a pressure reducing valve 8 is opened, then the electromagnetic valve 14 on a cylinder valve is opened, high-pressure hydrogen enters a flow limiting valve from the cylinder valve on a hydrogen cylinder along a pipeline, after six branches are converged, large-particle impurities in the hydrogen are filtered through a 7-micron filter, the filtered hydrogen enters the pressure reducing valve 8, the pressure of the hydrogen is reduced to 7-10 bar by the pressure reducing valve 8, and the decompressed hydrogen enters a hydrogen gas path of a fuel cell through a manual ball valve. In particular, in order to prevent the pressure reducing valve 8 from failing and the high-pressure hydrogen after ineffective pressure reduction impacts the fuel cell, a safety valve is arranged on the pressure reducing valve 8, the unloading pressure of the safety valve is set to 13bar, and the hydrogen with the pressure exceeding 13bar is discharged into the atmosphere through a discharge pipeline. Similarly, a safety valve is also arranged on the cylinder valve, and when the temperature in the cylinder is detected to be over-temperature, the hydrogen in the cylinder can be discharged through the safety valve. In order to save pipelines, the cylinder valve and the discharge pipeline of the pressure reducing valve 8 are connected in parallel to form a pipeline which is directly communicated with the atmosphere, wherein a check valve is arranged on a discharge branch of the pressure reducing valve 8 to prevent the high-pressure hydrogen from flowing backwards.

As an embodiment of the present invention, the mounting bracket 10 is provided with two parallel supporting legs 21, and a cross brace 22 is provided between the supporting legs 21; the bottom of the supporting leg 21 is connected with a reinforced supporting plate 23, and the reinforced supporting plate 23 is connected with a U-shaped mounting connecting piece 24; a top fixing hole position 25 is arranged on the top plate of the reinforcing support plate 23;

a back mounting hole 26 is formed on the back plate of the reinforcing support plate 23; a front fixing hole 27 is formed in the U-shaped groove of the U-shaped mounting connecting piece 24; the U-shaped end of the U-shaped mounting link 24 is provided with a wing fixing hole 28.

The side part of the supporting frame 1 is provided with a side supporting frame 28; the side supporting frames 28 extend towards the bottom of the supporting frame 1 and are as high as the mounting bracket 10 in height; the side support frame 28 is connected with a side upright post 29; the bottom of the side support frame 28 is connected with the support secondary beam 18; the bottom of the support secondary beam, the bottom of the side upright post and the bottom of the mounting bracket are respectively connected with the frame girder 19.

Further, the invention considers the overall arrangement structure of the whole vehicle in the aspect of system structure assembly. The support frame 1 provided by the invention uses four rectangular pipes as main beams to support the weight of the whole hydrogen system, exemplarily, a rectangular space with the size of about 920mm long and 2000mmX wide and 824mm high is reserved between the lower part of a hydrogen bottle and a frame of a whole vehicle, the space can be used for arranging a high-power fuel cell for a heavy truck or a power cell for the whole vehicle, and after the fuel cell 17 or the power cell is in a modularized design, the batch production and manufacture of the whole vehicle can be facilitated, and the manufacturing efficiency is improved. Meanwhile, the fuel cell 17 or the power cell is arranged on the upper side of the frame, so that the maintenance of the frame is greatly facilitated. Because the hydrogen system is suspended, a larger space is reserved at the lower part, and fuel cell radiators or motor radiators can be arranged at the two ends of the lower part of the hydrogen system.

The invention also specifically considers the connecting bracket with the whole vehicle in the structural design. Because the distance between the two frames of the whole vehicle is not constant, in order to ensure the reliable connection of the system and the whole vehicle,

in the aspect of hydrogen leakage detection, two hydrogen concentration sensors 13 are arranged at two ends of the top of the hydrogen system, so that leaked hydrogen can be monitored as early as possible with the maximum efficiency in the system space. The hydrogen system controller 6 sets the fault handling grade of response respectively for the hydrogen leakage concentration monitored by the hydrogen concentration sensor 13, so that the hydrogen leakage is prevented from generating safety hazard to the whole vehicle.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.