Vehicle-mounted hydrogen system and fuel cell vehicle

Abstract

The utility model discloses a vehicle-mounted hydrogen system and a fuel cell vehicle. The vehicle-mounted hydrogen system comprises a hydrogen system frame, a containing cavity, a pressure reducing valve and a plurality of hydrogen storage bottles. Connecting ends are arranged at the two ends of the hydrogen storage bottle respectively, connecting plates are arranged on the hydrogen system frame, and the connecting ends are correspondingly connected with the connecting plates respectively; a bottle opening TPRD is arranged at the position of a bottle opening of the hydrogen storage bottle located in the middle, bottle openings of the hydrogen storage bottles located on the sides are connected with the bottle opening TPRD through connectors and high-pressure pipelines, the bottle opening TPRD is further connected with a containing cavity, a bottle opening of the containing cavity is connected with a pressure reducing valve through a high-pressure pipeline, and a bottle valve is arranged at the position of the bottle opening of the containing cavity so as to control communication between the containing cavity and the pressure reducing valve. The pressure reducing valve reduces the pressure of the high-pressure hydrogen to the pressure required by the fuel cell and supplies the high-pressure hydrogen to the fuel cell system. On the basis that safety regulations are met, the number of the cylinder valves and the TPRD can be reduced, layout is effectively simplified, assembling efficiency is improved, and cost is reduced.

Description

Technical Field

[0001] The utility model relates to the field of vehicle-mounted power systems, and more specifically, to a vehicle-mounted hydrogen system and a fuel cell vehicle. Background Art

[0002] The onboard hydrogen system is a crucial component of fuel cell vehicles, providing fuel for the fuel cell engine and acting as the "fuel tank" of a traditional gasoline vehicle. Its primary function is to provide hydrogen at a stable pressure and flow rate to the fuel cell system.

[0003] In existing fuel cell vehicles, in order to meet the requirements of hydrogen supply and cruising range, the hydrogen storage system includes multiple high-pressure hydrogen storage bottles. Each high-pressure hydrogen storage bottle is connected to the hydrogen refueling pipeline and the low-pressure hydrogen supply pipeline through separate pipes and joints. This results in a relatively complex pipeline distribution and a large number of pipes and joints. Not only is the assembly process complicated and inconvenient to install, but it also increases the leakage risk of the entire system. Utility Model Content

[0004] One purpose of the present invention is to provide a new technical solution for an on-board hydrogen system and a fuel cell vehicle to solve the technical problems raised in the above-mentioned background technology.

[0005] According to a first aspect of the present utility model, there is provided a vehicle-mounted hydrogen system, comprising a hydrogen system frame, a receiving chamber, a pressure reducing valve, and a plurality of hydrogen storage bottles;

[0006] Both ends of the hydrogen storage bottle are respectively provided with connecting ends, and the hydrogen system frame is provided with connecting plates, and the connecting ends are respectively connected to the connecting plates;

[0007] A bottle mouth TPRD is provided at the bottle mouth of the hydrogen storage bottle located in the middle, and the bottle mouth of the hydrogen storage bottle located on the side is connected to the bottle mouth TPRD through a joint and a high-pressure pipeline. The bottle mouth TPRD is also connected to the accommodating chamber. The bottle mouth of the accommodating chamber is connected to the pressure reducing valve through a high-pressure pipeline, and a bottle valve is provided at the bottle mouth of the accommodating chamber to control the communication between the accommodating chamber and the pressure reducing valve. The pressure reducing valve reduces the high-pressure hydrogen to the pressure required by the fuel cell and supplies it to the fuel cell system.

[0008] Optionally, according to the on-board hydrogen system described in the utility model, the bottle valve of the accommodating chamber is also connected to a hydrogen filling port through a high-pressure pipeline to replenish hydrogen to the hydrogen storage bottle.

[0009] Optionally, according to the on-vehicle hydrogen system of the present invention, the bottle-mouth TPRD is further connected to a discharge collection port through a high-pressure pipeline for rapid and safe discharge of the bottle-mouth TPRD.

[0010] Optionally, according to the on-vehicle hydrogen system of the present invention, the pressure reducing valve is also connected to the discharge manifold through a high-pressure pipeline for rapid and safe discharge of the accommodating cavity.

[0011] Optionally, according to the on-board hydrogen system described in the utility model, an independent TPRD is connected to the bottle mouth of the hydrogen storage bottle located on the side through a high-pressure pipeline, and the independent TPRD is used for rapid and safe discharge of the hydrogen storage bottle located on the side.

[0012] Optionally, according to the on-vehicle hydrogen system of the present invention, the independent TPRD is arranged in the middle position of the hydrogen system frame.

[0013] Optionally, according to the on-board hydrogen system described in the utility model, the connecting plate includes an upper plate and a lower plate spliced ​​together, and a semicircular groove is provided on one side where the upper plate and the lower plate are spliced ​​together, and the semicircular groove is used to clamp the connecting end of the hydrogen storage bottle, and the lower plate is fixed to the hydrogen system frame away from the semicircular groove.

[0014] Optionally, according to the on-board hydrogen system described in the utility model, the lower plate is provided with threaded holes on both sides of the semicircular groove, the upper plate is provided with through holes opposite to the threaded holes, bolts are provided in the through holes, and the bolts are connected to the threaded holes.

[0015] According to another aspect of the present invention, a fuel cell vehicle is provided, comprising a fuel cell engine and a fuel cell hydrogen storage system for supplying hydrogen to the fuel cell engine. The fuel cell hydrogen storage system is the on-board hydrogen system described in any one of the above embodiments.

[0016] The purpose of this utility model is to design an on-board hydrogen system structure. Hydrogen is added through the hydrogen filling port, and the hydrogen enters the bottle valve and the receiving chamber connected to it through a high-pressure pipeline. The hydrogen is then dispersed to each hydrogen storage bottle through the receiving chamber. A diversion valve is set on the main pipeline. After being reduced in pressure by the pressure reducing valve, it can be continuously and stably supplied to the fuel cell system. The bottle mouth TPRD and independent TPRD are respectively set at the bottle mouth of the central hydrogen storage bottle and the hydrogen system frame, which can achieve safe discharge and reduce the TPRD effect.

[0017] Other features and advantages of the present invention will become apparent from the following detailed description of exemplary embodiments of the present invention with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and, together with the description, serve to explain the principles of the invention.

[0019] Figure 1This is a schematic structural diagram of the vehicle-mounted hydrogen system disclosed in the present utility model;

[0020] Figure 2 This is a schematic diagram of the bottle mouth pipeline connections of each hydrogen storage bottle in the vehicle-mounted hydrogen system disclosed in the utility model.

[0021] Description of reference numerals:

[0022] 1-Hydrogen filling port; 2-High-pressure pipeline; 3-Hydrogen storage bottle; 4-Hydrogen system frame; 5-Independent TPRD; 6-Connector; 7-Bottle mouth TPRD; 8-Bottle valve; 9-Accommodation chamber; 10-Pressure reducing valve; 11-Discharge collection port. DETAILED DESCRIPTION

[0023] Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that unless otherwise specifically stated, the relative arrangements of components and steps, numerical expressions and numerical values ​​set forth in these embodiments do not limit the scope of the present invention.

[0024] The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the present invention, its application, or uses.

[0025] Technologies, methods, and equipment known to ordinary technicians in the relevant art may not be discussed in detail, but where appropriate, the technologies, methods, and equipment should be considered part of the specification.

[0026] In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not limiting. Therefore, other examples of the exemplary embodiments may have different values.

[0027] according to Figure 1 and Figure 2 As shown, the present invention provides a vehicle-mounted hydrogen system, comprising a hydrogen system frame 4, a receiving chamber 9, a pressure reducing valve 10, and a plurality of hydrogen storage bottles 3;

[0028] Both ends of the hydrogen storage bottle 3 are provided with connecting ends, and the hydrogen system frame 4 is provided with connecting plates, and the connecting ends are connected to the connecting plates respectively;

[0029] A bottle mouth TPRD7 is provided at the bottle mouth of the hydrogen storage bottle 3 located in the middle, and the bottle mouth of the hydrogen storage bottle 3 located on the side is connected to the bottle mouth TPRD7 through a joint 6 and a high-pressure pipeline 2. The bottle mouth TPRD7 is also connected to the accommodating chamber 9. The bottle mouth of the accommodating chamber 9 is connected to the pressure reducing valve 10 through the high-pressure pipeline 2, and a bottle valve 8 is provided at the bottle mouth of the accommodating chamber 9 to control the communication between the accommodating chamber 9 and the pressure reducing valve 10. The pressure reducing valve 10 reduces the high-pressure hydrogen to the pressure required by the fuel cell and supplies it to the fuel cell system.

[0030] On the basis of meeting safety regulations, the utility model can reduce the number of bottle valves 8 and TPRDs, effectively simplify the layout, improve assembly efficiency and reduce costs.

[0031] Furthermore, the bottle valve 8 of the accommodating chamber 9 is connected to a hydrogen filling port 1 via a high-pressure pipeline 2 to replenish hydrogen in the hydrogen storage bottles 3. In the present utility model, hydrogen is added through the hydrogen filling port 1. High-pressure hydrogen is conducted into the accommodating chamber 9 via the high-pressure pipeline 2, then transferred through the bottle valve 8 to the interior of the accommodating chamber 9, where it is then dispersed into each hydrogen storage bottle 3. The high-pressure hydrogen flowing out of each hydrogen storage bottle 3 is collected on a main pipeline and directed to a pressure reducing valve 10, which reduces the pressure to the required pressure for the fuel cell and supplies it to the fuel cell system.

[0032] Furthermore, the bottle mouth TPRD7 is connected to a discharge manifold 11 via a high-pressure pipeline 2, enabling rapid and safe discharge of the bottle mouth TPRD7. The pressure reducing valve 10 is also connected to the discharge manifold 11 via the high-pressure pipeline 2, enabling rapid and safe discharge of the accommodating chamber 9. In this embodiment, to prevent accidental fires in gas-fired vehicles, the bottle mouth TPRD7 and the unloading valve pipelines on the pressure reducing valve 10 converge at the discharge manifold 11 for discharge.

[0033] Furthermore, in this embodiment, since the present invention reduces the number of bottle valves 8 and TPRDs while meeting safety regulations, the central hydrogen storage bottle 3 can achieve rapid discharge through the connection between the bottle opening TPRD 7 and the discharge manifold 11. In this embodiment, an independent TPRD 5 is connected to the bottle opening of the side hydrogen storage bottle 3 via the high-pressure pipeline 2. The independent TPRD 5 is used for rapid and safe discharge of the side hydrogen storage bottle 3.

[0034] Furthermore, the independent TPRD 5 is set in the middle of the hydrogen system frame 4, so that the high-pressure hydrogen in the hydrogen storage bottle 3 is quickly discharged at the middle and tail of the hydrogen storage bottle 3, avoiding the high hydrogen concentration caused by concentrated discharge at the tail.

[0035] Furthermore, the connecting plate includes an upper plate and a lower plate that are spliced ​​together. A semicircular groove is provided on one side of the upper plate and the lower plate that are spliced ​​together. The semicircular groove is used to clamp the connecting end of the hydrogen storage bottle 3. The lower plate is fixed to the hydrogen system frame 4 away from the semicircular groove. The lower plate is provided with threaded holes on both sides of the semicircular groove, and the upper plate is provided with a through hole opposite to the threaded hole. The through hole is provided with a bolt, and the bolt is connected to the threaded hole. In this embodiment, the upper plate and the lower plate are connected by bolts, and the connecting end of the hydrogen storage bottle 3 is correspondingly configured as a barbell structure with large ends and a small middle, so that the semicircular groove can be clamped in the middle part of the connecting end, thereby playing a stabilizing role for the hydrogen storage bottle 3. In addition, the upper plate and the lower plate connected by bolts are relatively convenient to assemble and disassemble.

[0036] According to another aspect of the present invention, a fuel cell vehicle is provided, comprising a fuel cell engine and a fuel cell hydrogen storage system for supplying hydrogen to the fuel cell engine. The fuel cell hydrogen storage system is the onboard hydrogen system of any of the aforementioned embodiments. The advantages of the fuel cell hydrogen storage system are simplified, making installation easier, while reducing leakage points in the system structure and improving system safety. For details, please refer to the relevant sections of the aforementioned embodiments and will not be repeated here.

[0037] Although some specific embodiments of the present invention have been described in detail through examples, those skilled in the art will appreciate that the above examples are for illustration only and are not intended to limit the scope of the present invention. Those skilled in the art will appreciate that modifications may be made to the above embodiments without departing from the scope and spirit of the present invention. The scope of the present invention is defined by the appended claims.

Claims

1. A vehicle-mounted hydrogen system, characterized in that: It includes a hydrogen system frame, a containing chamber, a pressure reducing valve and multiple hydrogen storage bottles; Both ends of the hydrogen storage bottle are respectively provided with connecting ends, and the hydrogen system frame is provided with connecting plates, and the connecting ends are respectively connected to the connecting plates; A bottle mouth TPRD is provided at the bottle mouth of the hydrogen storage bottle located in the middle, and the bottle mouth of the hydrogen storage bottle located on the side is connected to the bottle mouth TPRD through a joint and a high-pressure pipeline. The bottle mouth TPRD is also connected to the accommodating chamber. The bottle mouth of the accommodating chamber is connected to the pressure reducing valve through a high-pressure pipeline, and a bottle valve is provided at the bottle mouth of the accommodating chamber to control the communication between the accommodating chamber and the pressure reducing valve. The pressure reducing valve reduces the high-pressure hydrogen to the pressure required by the fuel cell and supplies it to the fuel cell engine.

2. The vehicle-mounted hydrogen system according to claim 1, characterized in that: The bottle valve of the accommodating chamber is also connected to a hydrogen filling port through a high-pressure pipeline to replenish hydrogen to the hydrogen storage bottle.

3. The vehicle-mounted hydrogen system according to claim 1, characterized in that: The bottle mouth TPRD is also connected to a discharge collection port through a high-pressure pipeline for rapid and safe discharge of the bottle mouth TPRD.

4. The vehicle-mounted hydrogen system according to claim 3, characterized in that: The pressure reducing valve is also connected to the discharge manifold via a high-pressure pipeline for rapid and safe discharge of the accommodating chamber.

5. The vehicle-mounted hydrogen system according to claim 4, characterized in that: The bottle mouth of the hydrogen storage bottle located on the side is connected to an independent TPRD through a high-pressure pipeline. The independent TPRD is used for rapid and safe discharge of the hydrogen storage bottle located on the side.

6. The vehicle-mounted hydrogen system according to claim 5, characterized in that: The independent TPRD is arranged in the middle of the hydrogen system frame.

7. The vehicle-mounted hydrogen system according to claim 1, characterized in that: The connecting plate includes an upper plate and a lower plate spliced ​​together. A semicircular groove is provided on one side where the upper plate and the lower plate are spliced ​​together. The semicircular groove is used to clamp the connecting end of the hydrogen storage bottle. The lower plate is fixed to the hydrogen system frame away from the semicircular groove.

8. The vehicle-mounted hydrogen system according to claim 7, characterized in that: The lower plate is provided with threaded holes on both sides of the semicircular groove, and the upper plate is provided with through holes opposite to the threaded holes. Bolts are provided in the through holes, and the bolts are connected to the threaded holes.

9. A fuel cell vehicle comprising a fuel cell engine and a fuel cell hydrogen storage system for supplying hydrogen to the fuel cell engine, characterized in that: The fuel cell hydrogen storage system is the on-vehicle hydrogen system according to any one of claims 1 to 7.

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