Lithium hydride hydrolysis hydrogen production device and battery system thereof

Abstract

The invention relates to a lithium hydride hydrolysis hydrogen production device and a battery system thereof, and belongs to the field of hydrogen production devices. The reaction cavity is used for reacting water and lithium hydride, and a through hole for feeding a lithium hydride briquette is formed in the upper end of the reaction cavity; the lithium hydride storage disc is arranged above the reaction cavity and consists of an upper storage disc, a lithium hydride sealing pipe and a lower storage disc in sequence; the material storage disc is installed on an output shaft of the stepping motor and is driven by the stepping motor to rotate. The telescopic linear motor is arranged above the lithium hydride storage disc and used for driving the pushing head to puncture the film and pushing the lithium hydride block to the reaction cavity, a shell is arranged above the reaction cavity, and the lithium hydride storage disc and the telescopic linear motor are arranged in the shell. Compared with a traditional high-pressure hydrogen storage tank, the high-pressure hydrogen storage tank has the advantages that the safety of equipment is greatly improved, the risks of high-pressure hydrogen leakage and explosion are avoided, and potential risks are reduced.

Description

Technical Field

[0001] The invention belongs to the field of hydrogen production devices, and in particular relates to a lithium hydride hydrolysis hydrogen production device and a battery system thereof. Background Art

[0002] With the rapid development of renewable energy, hydrogen energy, as a clean and efficient energy carrier, has received more and more attention. The application of hydrogen fuel cells in transportation, energy storage and other fields has gradually increased, driving the demand for safe and portable hydrogen supply equipment.

[0003] Currently, proton exchange membrane fuel cell systems generally use hydrogen tanks as a hydrogen source. These hydrogen tanks store hydrogen at high pressure and are able to provide the necessary hydrogen for fuel cells. However, hydrogen tanks are heavy and require complex storage and transportation management.

[0004] Although hydrogen tanks are technically feasible, they have problems with poor safety and portability. High-pressure hydrogen storage poses the risk of leakage and explosion, especially during transportation and use; the weight and volume of hydrogen tanks limit their use in portable devices, causing inconvenience to users.

[0005] Based on the above problems, a lithium hydride hydrolysis hydrogen production device and a battery system thereof are proposed. Summary of the invention

[0006] The purpose of the present invention is to provide a device for producing hydrogen by hydrolyzing lithium hydride and a battery system thereof, thereby improving the safety of a hydrogen source device.

[0007] In order to solve the above technical problems, the present invention is achieved through the following technical solutions:

[0008] A lithium hydride hydrolysis hydrogen production device, the device comprising a reaction chamber, a lithium hydride storage tray and a telescopic linear motor;

[0009] The reaction chamber is used for the reaction of water and lithium hydride, and the upper end is provided with a through hole for feeding lithium hydride briquette;

[0010] The lithium hydride storage tray is arranged above the reaction chamber, and is composed of an upper storage tray, a lithium hydride sealing tube and a lower storage tray in sequence; the storage tray is installed on the output shaft of the stepper motor and is driven to rotate by the stepper motor;

[0011] The telescopic linear motor is arranged above the lithium hydride storage tray to drive the pusher head to pierce the film and push the lithium hydride block into the reaction chamber;

[0012] A shell is arranged above the reaction chamber, and the lithium hydride storage tray and the telescopic linear motor are arranged in the shell.

[0013] On the other hand, a battery system is provided, comprising a hydrogen fuel cell unit, wherein the system comprises the above-mentioned lithium hydride hydrolysis hydrogen production device.

[0014] Beneficial effects:

[0015] The present invention utilizes lithium hydride to react with water to generate hydrogen. Compared with the traditional high-pressure hydrogen storage tank, the safety of the equipment is greatly improved, the risk of high-pressure hydrogen leakage and explosion is avoided, and the potential danger is reduced;

[0016] The present invention drives the storage tray to rotate by a stepper motor, and can accurately control the release amount and reaction progress of lithium hydride, thereby adjusting the hydrogen supply speed and meeting the requirements of different fuel cell systems for hydrogen supply.

[0017] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for describing the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0019] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0020] Figure 2 This is a schematic diagram of the structure of the lithium hydride storage tray of the present invention;

[0021] Figure 3 It is a structural schematic diagram of the lithium hydride sealing tube of the present invention;

[0022] Figure 4 It is a schematic diagram of the installation of the fixing frame structure of the present invention.

[0023] Among them, in the figure:

[0024] 1-Observation window; 2-Reaction chamber; 3-Sealing ring; 4-Lithium hydride storage tray; 5-Stepper motor fixing bracket; 6-Stepper motor fixing bracket fixing screw; 7-Telescopic linear motor; 8-Casing; 9-Casing fixing screw; 10-Water inlet and outlet plugs; 11-Air outlet pagoda joint; 12-Flange bearing; 13-Extension shaft; 14-Retaining ring; 15-Stepper motor fixing screw; 16-Telescopic linear motor fixing screw; 17-Stepper motor; 18-Linear telescopic motor fixing nut; 19-Storage tray fixing screw; 20-Upper storage tray; 21-Lithium hydride sealing tube; 22-Lower storage tray; 23-Storage tray fixing nut; 24-Easy to puncture film; 25-Sealing tube; 26-Lithium hydride pressing block; 51-Linear telescopic motor mounting part; 52-Stepper motor mounting part; 81-Lower step; 81-Upper step. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0026] like Figure 1-Figure 4 As shown, a portable hydrogen generating device based on hydrogen production by hydrolysis of lithium hydride is shown. The specific structure is as follows: it includes a reaction chamber 2, a lithium hydride storage tray 4, a stepper motor fixing frame 5, a telescopic linear motor 7, a stepper motor 17 and a housing 8.

[0027] An observation window 1 is installed on one side of the reaction chamber 2, and a water inlet and outlet plug 10 and an air outlet pagoda joint 11 are arranged on the side. The reaction chamber 2 is in a cubic shape as a whole.

[0028] The upper end of the reaction chamber 2 is provided with a through hole for feeding lithium hydride blocks 26, a lithium hydride storage tray 4 and a linear telescopic motor 7, a push head is provided at the front end of the linear telescopic motor 7, and a shell 8 is arranged above the reaction chamber 2 to seal the above components, and a sealing ring 3 is provided between the reaction chamber 2 and the shell 8 and fixed by screws 9.

[0029] The lithium hydride storage tray 4 is composed of an upper storage tray 20, a lithium hydride sealing tube 21 and a lower storage tray 22 which are compressed by screws 19 and nuts 23; the upper storage tray 20 is threaded so that the storage tray 4 is mounted on the output shaft of the stepping motor 17;

[0030] Furthermore, an extension shaft 13 is provided at the center of the lithium hydride storage tray 4, and a flange bearing 12 is provided above the reaction chamber 2; one end of the extension shaft 13 close to the reaction chamber 2 is installed on the flange bearing 12, so that the rotation stability of the lithium hydride storage tray 4 can be ensured.

[0031] The upper material storage tray 20 and the lower material storage tray 22 are provided with a plurality of circumferentially distributed through holes, and the lithium hydride sealing tube 21 is arranged in the through holes.

[0032] The linear telescopic motor 7 and the stepper motor 17 are fixed to the stepper motor fixing frame 5 by using screws 15 , screws 16 and nuts 18 ; the motor fixing frame 5 is fixed to the upper wall of the inner cavity of the housing 8 by using screws 6 .

[0033] In some embodiments, the outer shell 8 is cylindrical as a whole, and the motor fixing frame 5 includes a linear telescopic motor mounting portion 51 and a stepper motor mounting portion 52. The linear telescopic motor mounting portion 51 is U-shaped, and its two ends are installed above the inner cavity of the outer shell 8 by bolts; the stepper motor mounting portion 52 is U-shaped, and its two ends are respectively arranged above the inner cavity of the outer shell 8 and on the linear telescopic motor mounting portion 51, and can be welded or integrated with the linear telescopic motor mounting portion 51.

[0034] Furthermore, a step is provided on the outer shell 8, and the two ends of the linear telescopic motor mounting part 51 are installed on the inner cavity above the upper step 82 of the outer shell 8 by bolts, and one end of the stepping motor mounting part 52 is installed on the inner cavity above the lower step 81 of the outer shell 8 by bolts, so that the installation space can be ensured while reducing the size and weight of the device.

[0035] The preparation method of the lithium hydride sealed tube 21 is as follows:

[0036] S1, preparing lithium hydride powder into a block under anhydrous drying conditions;

[0037] S2, use the easily puncturable film 24 to seal one side of the sealing tube 25.

[0038] S3, under anhydrous dry conditions, the lithium hydride block 26 is loaded into a sealed tube 25 with one end sealed;

[0039] S4, under dry conditions, the other side of the sealed tube 25 is sealed using an easily puncturable film 26.

[0040] The easily puncturable film 24 is made of aluminum foil, which can provide excellent barrier properties and good moisture-proof properties.

[0041] The operation process of the lithium hydride hydrolysis hydrogen production device is as follows:

[0042] S1, the stepping motor 17 drives the material storage disc 4 to rotate, so that the lithium hydride sealing tube 25 runs to be flush with the linear telescopic motor 7;

[0043] S2, the linear telescopic motor 7 drives the pusher head to pierce the film 24, pushes the lithium hydride block 26 into the reaction chamber 2, and then the telescopic motor 7 retracts;

[0044] S3, repeat the above process regularly until the lithium hydride 26 in the storage tray 4 is completely consumed.

[0045] In some embodiments, different briquette sizes and storage tray sizes are used to make hydrogen generating devices with different supply times.

[0046] In some embodiments, different rotation times of the stepper motor 17 can control different hydrogen production speeds.

[0047] The present invention provides a portable hydrogen generating device based on hydrogen production by hydrolysis of lithium hydride. The lithium hydride is light in weight and only consumes water, which can improve the availability of the generating device in a portable fuel cell system and replace a heavier hydrogen tank. The use of a sealing tube 25 with an easy-to-poke film to store lithium hydride can effectively extend the storage time of the lithium hydride and is easy to carry.

[0048] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0049] The preferred embodiments of the present invention disclosed above are only used to help illustrate the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and use the present invention well. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A device for producing hydrogen by hydrolysis of lithium hydride, characterized in that: The device comprises a reaction chamber, a lithium hydride storage tray and a telescopic linear motor; The reaction chamber is used for the reaction of water and lithium hydride, and the upper end is provided with a through hole for feeding lithium hydride briquette; The lithium hydride storage tray is arranged above the reaction chamber, and is composed of an upper storage tray, a lithium hydride sealing tube and a lower storage tray in sequence; the storage tray is installed on the output shaft of the stepper motor and is driven to rotate by the stepper motor; The telescopic linear motor is arranged above the lithium hydride storage tray to drive the pusher head to pierce the film and push the lithium hydride block into the reaction chamber; A shell is arranged above the reaction chamber, and the lithium hydride storage tray and the telescopic linear motor are arranged in the shell.

2. A hydrogen production device by hydrolysis of lithium hydride according to claim 1, characterized in that: The lithium hydride sealed tube preparation method is as follows: S1, preparing lithium hydride powder into a block under anhydrous drying conditions; S2, seal one side of the sealing tube using an easily puncturable film; S3, under anhydrous dry conditions, placing the lithium hydride block into a sealed tube with one end sealed; S4. Under dry conditions, seal the other side of the sealed tube using an easily puncturable film.

3. A hydrogen production device by hydrolysis of lithium hydride according to claim 2, characterized in that: The easily puncturable film is an aluminum foil film.

4. A hydrogen production device by hydrolysis of lithium hydride according to claim 1, characterized in that: An extension shaft is arranged at the center of the lithium hydride storage tray, and a flange bearing is arranged above the reaction cavity; one end of the extension shaft close to the reaction cavity is installed on the flange bearing.

5. A hydrogen production device by hydrolysis of lithium hydride according to claim 1, characterized in that: A sealing ring is arranged between the reaction chamber and the shell.

6. A device for producing hydrogen by hydrolysis of lithium hydride according to claim 1, characterized in that: A motor fixing frame is arranged on the upper wall of the inner cavity of the shell, and the telescopic linear motor and the stepping motor are mounted on the motor fixing frame.

7. A device for producing hydrogen by hydrolysis of lithium hydride according to claim 1, characterized in that: The motor fixing frame includes a linear telescopic motor mounting portion and a stepping motor mounting portion, wherein the linear telescopic motor mounting portion is U-shaped, and both ends are mounted above the inner cavity of the housing by bolts; The stepper motor mounting portion is U-shaped, and two ends are respectively arranged above the inner cavity of the shell and on the linear telescopic motor mounting portion.

8. A device for producing hydrogen by hydrolysis of lithium hydride according to claim 7, characterized in that: The shell is provided with a step, and the two ends of the linear telescopic motor mounting part are mounted on the inner cavity above the upper step of the shell by bolts, and one end of the stepper motor mounting part is mounted on the inner cavity above the lower step of the shell by bolts.

9. A device for producing hydrogen by hydrolysis of lithium hydride according to claim 1, characterized in that: The operation process of the lithium hydride hydrolysis hydrogen production device is as follows: S1, the stepper motor drives the material storage disc to rotate, so that the lithium hydride sealing tube runs to be flush with the linear telescopic motor; S2, the linear telescopic motor drives the pusher to pierce the film and push the lithium hydride block into the reaction chamber, and then the telescopic motor retracts; S3, repeat the above process regularly.

10. A battery system comprising a hydrogen fuel cell unit, characterized in that: The system comprises the lithium hydride hydrolysis hydrogen production device as claimed in any one of claims 1-9.

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