Safe hydrogen storage device and hydrogen supply system for hydrogen energy powered bicycle

Abstract

A safe hydrogen storage device for a hydrogen-powered bicycle and a hydrogen supply system thereof, comprising: a hydrogen storage bottle and a valve installed at the mouth of the hydrogen storage bottle; the hydrogen storage bottle comprises, from the inside to the outside, an inner liner, a winding layer and an outer shell; the valve is a top-opening valve, comprising: a valve body, which is arranged in a cap shape and is suitable for connecting with a hydrogen bottle, and a groove is arranged inside the valve body; a top column, which penetrates the valve body and is suitable for moving up and down in the valve body; a circle of protrusions is arranged on the upper part of the top column, and the protrusions are arranged in the groove inside the valve body; a spring, which is suitable for providing an upward moving force for the top column; a gas nozzle, which cooperates with the bottom of the top column and is suitable for opening the gas nozzle when the top column moves downward; an elastic pressure ring, which is sleeved on the lower part of the gas nozzle; a vent hole suitable for gas to pass through is arranged in the center of the top column; and a connecting groove is arranged on the top of the valve body. By setting a top-opening valve mechanism and a rebound and protection structure, safety is ensured while simplifying the structure; setting a vertical Z-shaped gas nozzle can effectively increase the sealing area of ​​the gas nozzle, increase the sealing performance, and further increase safety.

Description

Technical Field

[0001] The present invention relates to the technical field of hydrogen storage and supply, and in particular to a safe hydrogen storage device and a hydrogen supply system for a hydrogen energy powered vehicle. Background Art

[0002] As a convenient and common means of transportation, shared bicycles have been widely recognized by the market for meeting people's needs of one to three kilometers. However, bicycles themselves still have their limitations. For example, it is very strenuous to ride against the wind or uphill, and riding for a long time will be very tiring. In addition, they cannot meet the needs of longer distance travel. Therefore, power-assisted bicycles are needed to better meet people's needs.

[0003] With the growing population and increasing energy consumption, the energy shortage problem has gradually become more serious, and the development and use of green energy has become a hot topic of global concern. A hydrogen fuel cell is a device that uses hydrogen as fuel to generate electricity through a chemical reaction with oxygen. Its only byproduct is water, so hydrogen-powered bicycles have become an ideal green means of transportation. At present, the bottle mouth structure of hydrogen fuel storage devices is too complicated and inconvenient to replace. Most of the time, the bottle mouth pressure reducing valve and pressure reducing device are replaced together, which greatly increases the cost. Therefore, a hydrogen storage device that can be safely replaced, has a simple structure and low cost, and a hydrogen supply system that can be matched with the device are needed to ensure safety while reducing costs. Summary of the invention

[0004] The purpose of the present invention is to provide a safe hydrogen storage device for a hydrogen energy powered vehicle and a hydrogen supply system thereof, to provide a safe hydrogen storage device with a simple structure, to reduce costs while ensuring safe replacement of the hydrogen storage device.

[0005] A safe hydrogen storage device for a hydrogen-powered bicycle, comprising: a hydrogen storage bottle and a valve installed at the mouth of the hydrogen storage bottle;

[0006] The hydrogen storage bottle comprises, from inside to outside, an inner liner, a winding layer and an outer shell;

[0007] The valve is a top-opening valve, comprising:

[0008] The valve body is configured in a cap shape and is suitable for connecting to a hydrogen cylinder, and a groove is provided inside the valve body;

[0009] A top column, the top column passes through the valve body and is suitable for moving up and down in the valve body;

[0010] The top column is provided with a circle of protrusions on its upper part, and the protrusions are arranged in the inner groove of the valve body;

[0011] A spring, adapted to provide a force for the top column to move upward; one end of the spring is connected to the top column protrusion, and the other end is provided with a gasket; the gasket is adapted to be connected to the valve body;

[0012] The air nozzle cooperates with the bottom of the top column, and is suitable for opening the air nozzle when the top column moves downward; the air nozzle is arranged in an inverted truncated cone shape; a crack is arranged at the center of the bottom surface of the air nozzle, and the crack extends in a Z shape along the thickness direction of the bottom surface of the air nozzle;

[0013] The elastic pressure ring is sleeved on the lower part of the air nozzle and is suitable for pressing the air nozzle;

[0014] The center of the top column is provided with a vent hole suitable for gas to pass through;

[0015] A connecting groove is provided on the top of the valve body.

[0016] The inner liner is a mixed material of glass fiber and aluminum.

[0017] The inner wall of the connecting groove is provided with multiple circles of internal threads.

[0018] A limiting ring suitable for limiting the position of the top column is arranged in the groove of the valve body.

[0019] A filtering and flow limiting device is arranged at the top of the vent hole.

[0020] A sealing device is provided at the connection between the top column and the valve body.

[0021] A hydrogen supply system for a hydrogen-powered power-assisted vehicle using the above-mentioned hydrogen-powered power-assisted vehicle safety hydrogen storage device comprises: a hydrogen storage device for a hydrogen-powered power-assisted vehicle, a safety device and an electric control device; the safety device is detachably connected to the top of a valve body of the hydrogen storage device for the hydrogen-powered power-assisted vehicle; the electric control device is connected to the safety device via a low-voltage connector and an adapter.

[0022] The bottom of the safety device is provided with an air intake joint suitable for connecting to the valve body; the outer wall of the air intake joint is provided with an external thread matching the internal thread of the connecting groove; the air intake joint is a concave type; the air intake joint is suitable for pushing the top column to open the air nozzle.

[0023] The safety device includes a main body; an air intake passage connected to the air intake joint is provided in the main body; a high-pressure connector interface, a high-pressure pressure transmitter interface, a safety valve interface, a manual valve interface, a first-level pressure reducing valve interface and a second-level pressure reducing valve interface are also provided in the main body; a low-pressure output interface is provided on one side of the second-level pressure reducing valve interface; a high-pressure connector is installed on the high-pressure connector interface; a pressure transmitter is installed on the pressure transmitter interface; a safety valve is installed on the safety valve interface; a manual valve is installed on the manual valve interface; a first-level pressure reducing valve is installed on the first-level pressure reducing valve interface; and a second-level pressure reducing valve is installed on the second-level pressure reducing valve interface; the air intake passage is connected to the low-pressure output interface through the high-pressure connector, the pressure transmitter, the safety valve, the manual valve, the first-level pressure reducing valve and the second-level pressure reducing valve in sequence.

[0024] The high-pressure connector is arranged at the bottom of the main body; the pressure transmitter is arranged on the upper part of the high-pressure connector; the safety valve is arranged on the upper part of the pressure transmitter; the manual valve is arranged on the side of the main body adjacent to the safety valve; the first-level pressure reducing valve is arranged on the side of the main body opposite to the safety valve; the second-level pressure reducing valve is arranged on the top of the main body.

[0025] By adopting the above technical scheme, the present invention has the following technical effects:

[0026] 1. The present invention simplifies the structure while ensuring safety by providing a top-opening valve mechanism and a rebound and protection structure; the vertical Z-shaped air nozzle is provided to effectively increase the sealing area of ​​the air nozzle, enhance the sealing performance, and further increase safety.

[0027] 2. The present invention limits the movement of the top column by setting a limit ring, thereby ensuring the stability of the device.

[0028] 3. The present invention further ensures the safety of the device by providing a filtering and current limiting device.

[0029] 4. The present invention ensures that the connection is quick, convenient, safe and stable by arranging a thread matching the valve body connection groove at the bottom of the safety device.

[0030] 5. The present invention provides an inverted concave air intake joint structure suitable for pushing the top column, so the connection is convenient, fast and safe.

[0031] 6. The present invention ensures that high-pressure hydrogen can be reduced to the rated output pressure and meets the safety requirements by arranging a high-pressure connector, a pressure transmitter, a safety valve, a manual valve, a primary pressure reducing valve and a secondary pressure reducing valve.

[0032] 7. The present invention separates the hydrogen storage device from the safety device and configures the hydrogen storage device as a separately replaceable component, thereby making the replacement of the hydrogen storage device more convenient and quick, and reducing costs while ensuring safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] In order to make the content of the present invention more clearly understood, the present invention is further described in detail below according to specific embodiments and in conjunction with the accompanying drawings, wherein

[0034] Figure 1 It is a structural schematic diagram of the present invention;

[0035] Figure 2 It is a schematic diagram of the structure of the safety device of the present invention;

[0036] Figure 3 is a front cross-sectional view of the safety device of the present invention;

[0037] Figure 4 It is a left side cross-sectional view of the safety device of the present invention;

[0038] Figure 5 It is a schematic diagram of the principle of the hydrogen supply system of the present invention.

[0039] The accompanying drawings are marked as follows: hydrogen storage bottle 1, inner tank 1-1, winding layer 1-2 and outer shell 1-3, valve body 2, top column 3, filter flow limiting device 3-1, spring 4, gasket 4-1, air nozzle 5, elastic pressure ring 6, low-pressure output interface 7, high-pressure connector 8, pressure transmitter 9, safety valve 10, first-level pressure reducing valve 11, manual valve 12, second-level pressure reducing valve 13. DETAILED DESCRIPTION

[0040] The advantages of the present invention are further described below in conjunction with the accompanying drawings and specific embodiments.

[0041] (Example 1)

[0042] See Figure 1 A safe hydrogen storage device for a hydrogen-powered bicycle comprises: a hydrogen storage bottle 1 and a valve installed at the mouth of the hydrogen storage bottle; wherein the hydrogen storage bottle comprises, from the inside to the outside, an inner liner 1-1, a winding layer 1-2 and an outer shell 1-3; the inner liner 1-1 is a mixed material of glass fiber and aluminum, Volume: 1000~5000ml ; Winding layer 1-2 is a carbon fiber winding layer.

[0043] The valve is a top-opening valve, including: a valve body 2, a top column 3, a spring 4, a gas nozzle 5 and an elastic pressure ring 6; wherein the valve body is set in a cap shape, suitable for connecting with the hydrogen cylinder 1, and a groove is provided inside the valve body 2; the valve body can be set to be fixedly connected to the hydrogen cylinder or detachably connected; a limiting ring suitable for limiting the top column 3 is provided inside the valve body 2 to ensure the stability of the device. In addition, a connecting groove is provided on the top of the valve body 2, and a plurality of internal threads are provided on the inner wall of the connecting groove.

[0044] The top column 3 penetrates the valve body 2 and is suitable for moving up and down in the valve body 2. A sealing device is provided at the connection between the top column 3 and the valve body 2. A circle of protrusions is provided on the top of the top column 3. The protrusions are arranged in the groove inside the valve body 2. A vent hole suitable for gas to pass through is provided in the center of the top column. A filter flow limiting device 3-1 is provided at the top of the vent hole. The filter flow limiting device 3-1 is suitable for bearing pressure. ≤35MPa The bottom of the top column 3 cooperates with the air nozzle 5, and is suitable for opening the air nozzle 5 when the top column 3 moves downward.

[0045] One end of the spring 4 is connected to the protrusion of the top column 3, suitable for providing an upward force for the top column 3, and the other end is provided with a gasket 4-1; the gasket 4-1 is suitable for connecting with the valve body 2; the air nozzle 5 is arranged in an inverted cone shape, and a rotating shaft is arranged on the upper part of the air nozzle 5, which is suitable for the opening and closing of the air nozzle 5; a crack is arranged in the center of the surface of the air nozzle 5, and the crack extends in a Z shape along the thickness direction of the bottom surface of the air nozzle 5. By setting a vertical Z-shaped air nozzle, the contact area of ​​the air nozzle 5 can be effectively increased and the sealing performance can be improved; the elastic pressure ring 6 is sleeved on the lower part of the air nozzle 5, which is suitable for pressing the air nozzle 5.

[0046] A hydrogen supply system for a hydrogen-powered power-assisted vehicle using the above-mentioned hydrogen-powered power-assisted vehicle safety hydrogen storage device comprises a hydrogen-powered power-assisted vehicle hydrogen storage device, a safety device and an electric control device; wherein the safety device is detachably connected to the top of a valve body 2 of the hydrogen-powered power-assisted vehicle hydrogen storage device; and the electric control device is connected to the safety device via a low-voltage connector and an adapter.

[0047] See Figures 2 to 4 The bottom of the safety device is provided with an air intake joint suitable for connecting with the valve body 2, and the outer wall of the air intake joint is provided with an external thread matching the internal thread of the connecting groove of the valve body 2; the air intake joint is a concave type; the air intake joint is suitable for pushing the top column 3 to open the air nozzle 5.

[0048] The safety device includes a main body; an air intake passage connected to the air intake joint is provided in the main body; a high-pressure connector interface, a high-pressure pressure transmitter interface, a safety valve interface, a manual valve interface, a first-level pressure reducing valve interface and a second-level pressure reducing valve interface are also provided in the main body; a low-pressure output interface 7 is provided on one side of the second-level pressure reducing valve interface; a high-pressure connector 8 is installed on the high-pressure connector interface; a pressure transmitter 9 is installed on the pressure transmitter interface; a safety valve 10 is installed on the safety valve interface; a manual valve 12 is installed on the manual valve interface; a first-level pressure reducing valve 11 is installed on the first-level pressure reducing valve interface; a second-level pressure reducing valve 13 is installed on the second-level pressure reducing valve interface; the air intake passage is connected to the low-pressure output interface 7 through the high-pressure connector 8, the pressure transmitter 9, the safety valve 10, the manual valve 12, the first-level pressure reducing valve 11 and the second-level pressure reducing valve 13 in turn. By providing the high-pressure connector 8, the pressure transmitter 9, the safety valve 10, the manual valve 12, the first-level pressure reducing valve 11 and the second-level pressure reducing valve 13, the output pressure of the output port is controlled ≥1.03Mpa, Ensure safe supply of hydrogen.

[0049] The high-pressure connector 8 is arranged at the bottom of the main body; the pressure transmitter 9 is arranged on the upper part of the high-pressure connector 8; the safety valve 10 is arranged on the upper part of the pressure transmitter 9; the manual valve 12 is arranged on the side of the main body adjacent to the safety valve 10; the first-level pressure reducing valve 11 is arranged on the side of the main body opposite to the safety valve 10; the second-level pressure reducing valve 13 is arranged on the top of the main body.

[0050] See Figure 5When the present invention is used, the safety device is threadedly connected to the connecting groove of the valve body 2. When it is rotated to the bottom, the bottom joint of the safety device pushes the top column 3 to open the gas nozzle 5. The hydrogen passes through the high-pressure connector 8, the pressure transmitter 9, the safety valve 10, the manual valve 12, the first-level pressure reducing valve 11 and the second-level pressure reducing valve 13 in sequence, and finally reaches the low-pressure output interface 7. The low-pressure output interface 7 is provided with an electric control device to control the on and off of the hydrogen.

[0051] When the hydrogen in the hydrogen storage device is used up, the manual valve is closed and the hydrogen storage device is rotated in the reverse direction. At this time, the gas nozzle 5 is closed under the pressure of the elastic pressure ring 6 to ensure that the residual gas will not leak.

[0052] The specific embodiments described above further illustrate the objectives, technical solutions and beneficial effects of the present invention in detail. It should be understood that the above description is only a specific embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A safe hydrogen storage device for a hydrogen-powered vehicle, characterized in that: include: A hydrogen storage bottle (1) and a valve installed at the mouth of the hydrogen storage bottle; The hydrogen storage bottle comprises, from the inside to the outside, an inner liner (1-1), a winding layer (1-2) and an outer shell (1-3); The valve is a top-opening valve, comprising: The valve body (2) is configured in a cap shape and is suitable for being connected to the hydrogen storage bottle (1), and a groove is provided inside the valve body (2); A top column (3), wherein the top column (3) passes through the valve body (2) and is suitable for moving up and down in the valve body (2); The top column (3) is provided with a circle of protrusions on its upper part, and the protrusions are arranged in a groove inside the valve body; A spring (4) is suitable for providing a force for the top column (3) to move upward; one end of the spring (4) is connected to the protrusion of the top column (3), and the other end is provided with a gasket (4-1); the gasket (4-1) is suitable for connecting to the valve body (2); The air nozzle (5) cooperates with the bottom of the top column (3), and is suitable for opening the air nozzle (5) when the top column (3) moves downward; the air nozzle (5) is arranged in an inverted truncated cone shape, and a rotating shaft is arranged on the upper part of the air nozzle (5) so as to open and close the air nozzle (5); a crack is arranged at the center of the air nozzle (5); An elastic pressure ring (6) is sleeved on the lower part of the air nozzle (5) and is suitable for pressing the air nozzle; The center of the top column (3) is provided with a vent hole suitable for gas to pass through; The top of the valve body (2) is provided with a connecting groove.

2. The safe hydrogen storage device for hydrogen-powered bicycle according to claim 1 is characterized in that: The inner liner (1-1) is a mixed material of glass fiber and aluminum.

3. The safe hydrogen storage device for hydrogen-powered bicycle according to claim 1 is characterized in that: The inner wall of the connecting groove is provided with multiple circles of internal threads.

4. The safe hydrogen storage device for hydrogen-powered bicycle according to claim 1 is characterized in that: A limiting ring suitable for limiting the position of the top column (3) is provided in the groove of the valve body.

5. The safe hydrogen storage device for hydrogen-powered bicycle according to claim 1 is characterized in that: A filtering and flow limiting device (3-1) is provided at the top end of the vent hole.

6. The safe hydrogen storage device for hydrogen-powered bicycle according to claim 1 is characterized in that: A sealing device is provided at the connection between the top column (3) and the valve body (2).

7. A hydrogen supply system for a hydrogen-powered vehicle using the hydrogen-powered vehicle safety hydrogen storage device according to any one of claims 1 to 6, characterized in that: include: A hydrogen storage device, a safety device and an electric control device for a hydrogen energy powered vehicle; the safety device is detachably connected to the top of the valve body of the safety hydrogen storage device for the hydrogen energy powered vehicle; the electric control device is connected to the safety device via a low-pressure connector and an adapter.

8. The hydrogen supply system for a hydrogen powered vehicle according to claim 7, characterized in that: The bottom of the safety device is provided with an air intake joint suitable for connecting to the valve body; the outer wall of the air intake joint is provided with an external thread matching the internal thread of the connecting groove; the air intake joint is of an inverted concave type; the air intake joint is suitable for pushing the top column (3) to open the air nozzle (5).

9. The hydrogen supply system for a hydrogen powered vehicle according to claim 7, characterized in that: The safety device comprises a body; an air intake passage connected to an air intake joint is provided in the body; a high-pressure connector interface, a high-pressure pressure transmitter interface, a safety valve interface, a manual valve interface, a first-level pressure reducing valve interface and a second-level pressure reducing valve interface are also provided in the body; a low-pressure output interface (7) is provided on one side of the second-level pressure reducing valve interface; a high-pressure connector (8) is installed on the high-pressure connector interface; a pressure transmitter (9) is installed on the pressure transmitter interface; a safety valve (10) is installed on the safety valve interface; a manual valve (12) is installed on the manual valve interface; a first-level pressure reducing valve (11) is installed on the first-level pressure reducing valve interface; and a second-level pressure reducing valve (13) is installed on the second-level pressure reducing valve interface; the air intake passage is connected to the low-pressure output interface (7) through the high-pressure connector (8), the pressure transmitter (9), the safety valve (10), the manual valve (12), the first-level pressure reducing valve (11) and the second-level pressure reducing valve (13) in sequence.

10. The hydrogen supply system for a hydrogen powered vehicle according to claim 9, characterized in that: The high-pressure connector (8) is arranged at the bottom of the body; the pressure transmitter (9) is arranged on the upper part of the high-pressure connector (8); the safety valve (10) is arranged on the upper part of the pressure transmitter (9); the manual valve (12) is arranged on the side of the body adjacent to the safety valve (10); the first-stage pressure reducing valve (11) is arranged on the side of the body opposite to the safety valve (10); and the second-stage pressure reducing valve (13) is arranged on the top of the body.

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