CN-121993731-A - Composite solid-state hydrogen storage device with gradient temperature field coupling annular layered structure

CN121993731ACN 121993731 ACN121993731 ACN 121993731ACN-121993731-A

Abstract

The invention discloses a composite solid hydrogen storage device with a gradient temperature field coupling annular layered structure, which comprises a hydrogen storage cavity, a heating rod and a hydrogen cylinder, wherein a plurality of radial heat conduction separation layers are sleeved in the hydrogen storage cavity from inside to outside, gaps are reserved between the adjacent radial heat conduction separation layers, the inner part of the hydrogen storage cavity is divided into a plurality of annular hydrogen storage chambers by the plurality of radial heat conduction separation layers, air holes for the hydrogen to pass through are formed in the surface of the radial heat conduction separation layers, the heating rod is arranged in the center of the hydrogen storage cavity, heat is sequentially and radially transferred from inside to outside, the working temperature of hydrogen storage materials in the plurality of hydrogen storage chambers is sequentially reduced from inside to outside, independent hydrogen conveying pipelines are respectively communicated in the plurality of hydrogen storage chambers, and the plurality of hydrogen conveying pipelines are communicated with the hydrogen cylinder. The solid-state hydrogen storage device can accurately regulate and control the internal heat transfer path of the reactor based on the working temperature gradients of different hydrogen storage materials.

Inventors

ZHANG QINGXU
ZHANG TAO
WANG SHENGQIANG
Bai Hongcun
LIU HAIBO
MA ZHEWEN
LI YONGHONG
YU XUEPING

Assignees

六盘山实验室

Dates

Publication Date: 20260508
Application Date: 20260325

Claims (7)

1. A composite solid-state hydrogen storage device of a gradient temperature field coupled annular layered structure, comprising: The hydrogen storage device comprises a hydrogen storage cavity, a plurality of radial heat conduction separation layers, a plurality of annular hydrogen storage chambers, a plurality of air holes and a plurality of air holes, wherein the inside of the hydrogen storage cavity is sleeved with the plurality of radial heat conduction separation layers from inside to outside; The heating rod is arranged at the center of the hydrogen storage cavity, and heat is sequentially and radially transferred from inside to outside; The hydrogen storage chambers are communicated with independent hydrogen conveying pipelines, and the hydrogen conveying pipelines are communicated with the hydrogen cylinders.
2. The gradient temperature field coupling annular layered structure composite solid hydrogen storage device of claim 1, wherein the hydrogen delivery pipeline is provided with an electromagnetic valve.
3. The gradient temperature field coupled annular layered structure composite solid hydrogen storage device of claim 2, wherein a temperature sensor is disposed within the hydrogen storage chamber.
4. The gradient temperature field coupling annular layered structure composite solid hydrogen storage device of claim 3, further comprising a control cabinet, wherein the temperature sensor and the electromagnetic valve are both connected with the control cabinet.
5. The gradient temperature field-coupled annular layered structured composite solid hydrogen storage device of claim 1, wherein said hydrogen storage material is mixed with a highly thermally conductive material.
6. The gradient temperature field coupling annular layered structure composite solid hydrogen storage device of claim 1, wherein an insulating layer is disposed outside the hydrogen storage cavity.
7. The gradient temperature field coupling annular layered structure composite solid hydrogen storage device of claim 6, wherein the top and bottom of the hydrogen storage cavity are both connected with flanges.

Description

Composite solid-state hydrogen storage device with gradient temperature field coupling annular layered structure Technical Field The invention relates to the technical field of hydrogen energy storage, in particular to a composite solid-state hydrogen storage device with a gradient temperature field coupling annular layered structure. Background The solid-state hydrogen storage has become a technical route with great development potential in the field of large-scale hydrogen energy storage and transportation by virtue of the core advantages of high volume hydrogen storage density, excellent safety, convenient storage and transportation and the like, and has wide application prospect in the scenes of fuel cells, distributed energy supply, energy storage power stations and the like. The current mainstream solid-state hydrogen storage system mainly comprises magnesium-based (MgH 2), ferrotitanium-based (TiFe), lanthanum-nickel-based (LaNi 5) and other metal/alloy hydrogen storage materials, the hydrogen absorption and desorption thermodynamics and dynamics characteristics of different systems are remarkably different, the theoretical hydrogen storage capacity of the magnesium-based material is high, the cost is low, the hydrogen desorption kinetics performance is poor, the hydrogen release can be realized by generally needing a high Wen Fang temperature of more than 300 ℃, the hydrogen desorption temperature of the TiFe-based alloy is moderate (about 100 ℃), the comprehensive performance is balanced, the LaNi 5-based rare earth alloy can complete the hydrogen absorption and desorption cycle at normal temperature or even near room temperature, the response speed is high, and the operating condition is mild. The traditional solid-state hydrogen storage device is mostly filled in a hydrogen storage reactor by adopting a single hydrogen storage material in a homogeneous way, and the whole tank body is uniformly heated by a central heating rod during hydrogen release. The structural mode has an inherent technical bottleneck which is difficult to solve through material modification, and severely restricts the energy efficiency and the practicability of the system, for example: 1. The heat utilization efficiency is low, and in order to meet the high Wen Fang hydrogen requirement of high-melting-point materials such as magnesium base, the whole reactor needs to be heated to the target high temperature, so that the overheating of low-temperature active material areas such as LaNi 5 in the tank body can occur, and a large amount of high-quality heat energy is wasted. 2. The heat loss of the system is remarkable, the temperature of the surface of the shell is higher due to the high-temperature operation of the whole reactor, the temperature difference between the whole reactor and the environment is overlarge, the convection and radiation heat dissipation losses are serious, and the energy efficiency of the device is further reduced. 3. The material performance is difficult to cooperate, a single material system can not realize the performance complementation of high hydrogen storage capacity (magnesium-based advantage) and low-temperature rapid hydrogen release (Lani 5 advantage) in the same reactor, the system is difficult to balance among hydrogen storage density, working temperature and response rate, and the overall performance is insufficient. Therefore, the research of a composite solid-state hydrogen storage device which can precisely regulate and control the gradient temperature field coupling annular layered structure of the heat transfer path inside the reactor based on the working temperature gradients of different hydrogen storage materials is a problem to be solved by the technicians in the field. Disclosure of Invention In view of the above, the invention provides a composite solid-state hydrogen storage device with a gradient temperature field coupling annular layered structure, which can accurately regulate and control the internal heat transfer path of a reactor based on the working temperature gradients of different hydrogen storage materials. In order to achieve the above purpose, the present invention adopts the following technical scheme: a composite solid-state hydrogen storage device of a gradient temperature field coupled annular layered structure, comprising: The hydrogen storage device comprises a hydrogen storage cavity, a plurality of radial heat conduction separation layers, a plurality of annular hydrogen storage chambers, a plurality of air holes and a plurality of air holes, wherein the inside of the hydrogen storage cavity is sleeved with the plurality of radial heat conduction separation layers from inside to outside; The heating rod is arranged at the center of the hydrogen storage cavity, and heat is sequentially and radially transferred from inside to outside; The hydrogen storage chambers are communicated with independent hydrogen conveying pipelines, and the hydrogen conveying pipe