CN-121993730-A - Solid alloy hydrogen storage device capable of controlling temperature independently in partition mode

CN121993730ACN 121993730 ACN121993730 ACN 121993730ACN-121993730-A

Abstract

The invention relates to the technical field of solid hydrogen storage, in particular to a solid alloy hydrogen storage device capable of independently controlling temperature in a partitioning way, which comprises a hydrogen storage tank and a heat conducting oil circulation system, wherein a hydrogen absorption port and a hydrogen discharge port are arranged above the hydrogen storage tank, a plurality of partition boards are vertically fixed in the hydrogen storage tank, the partition boards divide the vertical direction of the hydrogen storage tank into a plurality of hydrogen storage areas, through holes are uniformly distributed on the partition boards, the hydrogen storage areas are mutually communicated through the through holes, a coil pipe is arranged above a heat insulating ceramic plate, a coil pipe is arranged above the partition boards, and two ends of the coil pipe are respectively communicated with a heat conducting oil inlet and a heat conducting oil outlet. According to the invention, the corresponding hydrogen storage area can be independently started to carry out heating hydrogen release or cooling hydrogen absorption according to the real-time hydrogen demand, so that the accurate and low-energy-consumption thermal management is realized, the overall hydrogen supply continuity is not damaged, the partition independent temperature control and continuous stable hydrogen supply are considered, and the technical problems that the partition temperature control and continuous hydrogen supply, the hydrogen supply pressure fluctuation is large and the flow is unstable can not be simultaneously considered in the conventional partition type hydrogen storage device are solved.

Inventors

HU JIANGLIN
CHEN JUNJIE
LI JIAHUI
WANG JUNYANG
CHEN YUAN
Wan Haiyi
XUE HANSONG
HU JIA
Qi Xinjia
MO JUNLIN
YUAN YE
YAO JING
ZHU YANSONG
CHEN SHOUJIE
CHEN YANYUE

Assignees

重庆新型储能材料与装备研究院

Dates

Publication Date: 20260508
Application Date: 20260310

Claims (9)

1. The solid alloy hydrogen storage device capable of independently controlling temperature in a partitioned way is characterized by comprising a hydrogen storage tank and a heat conducting oil circulation system, wherein a hydrogen absorption port and a hydrogen release port are arranged above the hydrogen storage tank; A plurality of partition boards are vertically fixed in the hydrogen storage tank, the partition boards divide the vertical direction of the hydrogen storage tank into a plurality of hydrogen storage areas, through holes are uniformly distributed on the partition boards, and the through holes are communicated with each other; a coil is arranged above the partition plate, and two ends of the coil are respectively communicated with a heat conducting oil inlet and a heat conducting oil outlet.
2. The solid alloy hydrogen storage device capable of independently controlling temperature in a partitioning manner according to claim 1, wherein the cross section of the coil pipe is wavy.
3. The apparatus of claim 2, wherein the partition plate comprises a bottom plate fixed on the inner wall of the hydrogen storage tank and a heat-insulating ceramic plate above the bottom plate, and the coil is above the heat-insulating ceramic plate.
4. The solid alloy hydrogen storage device capable of independently controlling temperature in a partitioning manner according to claim 3, wherein the heat conducting oil circulation system comprises a main oil pipe, a cooling oil path and a variable frequency oil pump arranged on the main oil pipe and the cooling oil path, the cooling oil path is arranged in parallel with the main oil pipe, a heater is arranged on the main oil pipe, a radiator is arranged on the cooling oil path, a plurality of branch oil pipes are communicated on the main oil pipe, and each branch oil pipe is respectively connected with a heat conducting oil inlet and a heat conducting oil outlet of each hydrogen storage area in series to form a circulation loop.
5. The solid alloy hydrogen storage device capable of independently controlling temperature in a partitioning manner according to claim 1, further comprising an intelligent control unit, wherein the intelligent control unit comprises a PLC controller, a temperature sensor, a pressure sensor and a flow sensor, the temperature sensor is arranged in each hydrogen storage area, the pressure sensor is arranged on a pipeline between hydrogen utilization equipment and a hydrogen discharge port and in each hydrogen storage area, and the flow sensor is arranged at the hydrogen absorption port and the hydrogen discharge port.
6. The solid alloy hydrogen storage device capable of independently controlling temperature in a partitioning manner according to claim 1, wherein the hydrogen storage tank is in a vertically arranged cuboid shape, and the bottom plate is in sliding connection with the inner wall of the hydrogen storage tank.
7. A control method of a solid alloy hydrogen storage device capable of controlling temperature independently in a partitioning manner, which is applied to the solid alloy hydrogen storage device capable of controlling temperature independently in a partitioning manner as claimed in any one of claims 1 to 6, and is characterized by comprising the following steps: S1, initializing, namely acquiring an initial temperature T0 and an initial pressure P0 in each hydrogen storage area, and setting a target cooling temperature range of each hydrogen storage area under a hydrogen absorption working condition and a target heating temperature range under a hydrogen release working condition; S2, identifying the current hydrogen absorption working condition or the current hydrogen discharge working condition according to the operation state of the hydrogen storage device; s3, monitoring the temperature in a subarea, namely collecting the real-time temperature T1 in each hydrogen storage area in real time, and combining the characteristic of heat crosstalk between insulating layers of a heat insulation ceramic plate of a partition plate to ensure the independence of temperature monitoring in each hydrogen storage area; S4, intelligent partition temperature control, namely independently controlling the start and stop of a conduction oil circulation loop of the corresponding hydrogen storage area and the flow and temperature of the conduction oil according to the current working condition, the pressure P of hydrogen demand equipment, the difference DeltaT between the real-time temperature T1 of each hydrogen storage area and a target temperature range, and realizing independent temperature control of each hydrogen storage area through heat exchange between a coil pipe and a hydrogen storage material; And S5, dynamically adjusting and continuously supplying hydrogen, namely dynamically adjusting the temperature of each hydrogen storage area according to the real-time hydrogen demand in the temperature control process, ensuring that a hydrogen passage is not interrupted in the hydrogen absorption or desorption process, and realizing synchronous implementation of independent temperature control and continuous stable hydrogen supply in a partition manner.
8. The solid alloy hydrogen storage device capable of independently controlling temperature in a partitioning manner according to claim 7, wherein in the step S5, a hydrogen storage area is sequentially divided into an A1 area, an A2 area, an A3 area and an A4 area from bottom to top, heating and releasing hydrogen of the A1 area are only started under a small-flow hydrogen supply working condition, heating and releasing hydrogen of the A1 area, the A3 area and the A4 area are started under a medium-flow hydrogen supply working condition, heating and releasing hydrogen of the A1 area and the A3 area are not heated and releasing hydrogen of the A2 area and the A4 area are started, and heating and hydrogen supplying of the A1 area, the A2 area and the A3 area or hydrogen supplying of the A1 area, the A2 area, the A3 area and the A4 area are started under a large-flow hydrogen supply working condition.
9. The solid alloy hydrogen storage device capable of independently controlling temperature in a partitioning manner according to claim 8, wherein the small-flow hydrogen supply means that the current required hydrogen flow is 0-25% of the rated maximum hydrogen supply flow of the hydrogen storage device, the medium-flow hydrogen supply condition is 25-50% of the rated maximum hydrogen supply flow of the hydrogen storage device, and the large-flow hydrogen supply condition is 50-100% of the rated maximum hydrogen supply flow of the hydrogen storage device.

Description

Solid alloy hydrogen storage device capable of controlling temperature independently in partition mode Technical Field The invention relates to the technical field of solid-state hydrogen storage, in particular to a solid-state alloy hydrogen storage device capable of controlling temperature independently in a partitioning mode. Background Hydrogen energy is used as a key carrier for realizing carbon neutralization, and efficient and safe storage and on-demand release of the hydrogen energy are core bottlenecks of an industrial chain. Compared with the high-pressure gaseous hydrogen storage and the low-temperature liquid hydrogen storage modes, the solid alloy hydrogen storage has more remarkable advantages, mainly characterized in that the solid alloy hydrogen storage is realized through metal hydride hydrogen fixation, has the characteristics of high volume hydrogen storage density, normal temperature and low pressure of operation conditions, strong safety, convenient storage and transportation and the like, does not need a high-pressure container or an extremely low-temperature environment, is a hydrogen energy storage and transportation technology with an extremely industrial prospect, and has huge application potential in the fields of traffic power, distributed energy storage, hydrogen energy storage and transportation and the like in the future. The solid alloy hydrogen storage technology realizes the fixation and release of hydrogen through the reversible chemical reaction between metal hydride and hydrogen, the process is accompanied by a remarkable heat absorption and release effect, and the reaction kinetics and the conversion efficiency are highly dependent on accurate thermal management. However, conventional solid state hydrogen storage systems typically suffer from the following problems: 1. The traditional hydrogen storage devices are heated or cooled in the whole hydrogen storage area, so that the heat distribution is uneven, and the hydrogen charging and discharging efficiency of the hydrogen storage material is affected. 2. The problem of heat loss is that the entire hydrogen storage region is heated or cooled, and even if the hydrogen demand is small, the entire hydrogen storage material must be heated, resulting in a large heat loss. 3. The circulation efficiency of the cooling water and the heating water resources is low, the traditional hydrogen storage device has design defects on the circulation management of the cooling water or the heating water, and the cooling and maintenance costs are increased. In this regard, the prior art "a solid-state hydrogen storage device based on partition management" (publication No. CN119737562 a) discloses a hydrogen storage device for solving the above-mentioned problems, the device is provided with a plurality of mutually independent hydrogen storage areas, a stepping rotating motor and a sealing device with an opening, and the sealing device is driven to rotate by the stepping rotating motor so as to realize opening or closing of the opening of a single hydrogen storage area, thereby realizing switching of the hydrogen storage area, the hydrogen storage and release processes can be controlled by partition rotation, and hydrogen can be charged and released only for the single hydrogen storage area each time, and other hydrogen storage areas are in a stable state, thereby realizing accurate temperature control for the single area, and further solving the defect of uneven heat distribution control of the conventional hydrogen storage device. Meanwhile, the device is provided with a cooling medium storage container and a cooling medium collecting device, and a power device is used for integrating a circulating cooling system, so that the cooling medium can be recycled, heating can be performed during hydrogen release, the requirement of heat of the hydrogen release reaction is met, and the problem of low circulating efficiency of cooling water and heating water is solved. In addition, the device also controls the stepping rotating motor to independently open and close each area through the controller, so that the hydrogen storage area can be switched in time to ensure that the equipment continues to work under the condition that the temperature of the hydrogen storage area in a working state is too high or too low, and further, each hydrogen storage area can always keep a proper temperature, and the problems of overheating and heat loss in each area are avoided. However, the following technical problems still exist in the prior art: In the hydrogen storage device in the prior art, the hydrogen storage device is divided into a plurality of mutually independent hydrogen storage areas along the longitudinal direction of the hydrogen storage container, the stepping rotary motor drives the sealing device to realize the opening or closing of a single hydrogen storage area, and hydrogen can only be charged and discharged for a single hydrogen storage area e