RU2450203C2 - Metal-hydride accumulator for hydrogen storage - Google Patents

Abstract

FIELD: power engineering.

SUBSTANCE: metal-hydride accumulator for hydrogen storage comprises a vessel and a battery of fuel elements. The battery is made in the form of two coils made as capable of winding a wide tape from a metal alloy onto them and its rewinding off one coil onto the other one. On one of the coils the metal alloy is combined with hydrogen to form a metal hydride Al(BH₄)₃ or Bi(BH₄)₂ with high hydrogen content. The tape passes between coils near a heat-releasing electric element arranged outside the vessel, ensuring hydrogen release. The vessel has a glased window. Coils are separated with a heat insulation partition.

EFFECT: using the invention will make it possible to provide for quick release of the necessary hydrogen portion in a short period of time.

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Description

The invention relates to the field of hydrogen energy and can be used for storage, transportation and distribution (supply) of hydrogen in fuel cells and other power plants.

A device is known "SYSTEM OF STORAGE AND DISCHARGE OF HYDROGEN WITH METAL HYDROGEN BATTERIES". Patent RU No. 87775 U1, MNC F17C 11/00 (2006.01), IPC Н01М 8/04 (2006.01). Application: 2009119571/22, 05.26.2009.

A hydrogen storage and delivery system containing metal hydride hydrogen storage batteries, a fuel cell battery, hydrogen reception and delivery lines, a coolant circulation line, control valves, characterized in that an intermediate liquid coolant circulation circuit with a heat exchanger and a compensation tank are additionally introduced into the system, the intermediate circulation of the liquid coolant is connected to the lower part of the compensation tank, and the upper part of the tank is connected to the mag Tral hydrogen dispensing (prototype).

The disadvantages are the small volume of metal hydride hydrogen batteries and fuel cell batteries, the low rate of return of hydrogen, the difficulty of accurately releasing the desired volume of hydrogen over a certain time.

The famous "HYDROGEN BATTERY". Patent RU No. 2376522 C1, IPC F17C 11/00 (2006.01). Application: 2008134327/06, 08/22/2008. Abstract:

In a hydrogen accumulator containing hollow microspheres and an alloy forming a metal hydride with hydrogen, the internal cavity of the microsphere is made free. A metal alloy is deposited on the outer surface of the microsphere. The wall of the microsphere is made permeable to hydrogen at room temperature. The technical result of the invention is to provide both high weight and high volumetric hydrogen content, which has high-speed regulatory properties when filling the battery and when it is discharged (supplied to the consumer), and safe storage and transportation of hydrogen (analogue).

The disadvantage is the difficulty of extracting the right amount of hydrogen in a given time.

The aim of the invention is to provide a device with a quick return of the required portion of hydrogen in a short time.

The technical result in the device "metal hydride battery for storing hydrogen", consisting of a housing, a battery of fuel cells, is achieved by the fact that the battery is made in the form of two coils made with the possibility of winding a wide ribbon of metal alloy on them and rewinding it from one coil to another , wherein one of the coils is connected to a metal alloy with hydrogen to form metal hydride Al (BH _{4) 3} or Bi (BH _{4) 2} with a high hydrogen content, wherein the belt passes between the coils around termovydelyayuschego elektriches th element arranged outside the housing, ensuring release therefrom hydrogen, the housing has a glazed window, and the coils are separated a thermally insulating wall.

Figure 1 shows a metal hydride battery for storing hydrogen.

Statics. The list of positions.

1 - case

2 - fuel cell battery

3 - coils

4 - one coil

5 - wide tape

6 - metal alloy

7 - second coil

8 - thermal element

9 - glazed window

10 - thermally insulating partition

11 - cassette

12 - hole

A metal hydride hydrogen storage battery having a housing (1), a fuel cell battery (2), is characterized in that the battery (2) is made in the form of two coils (3) made with the possibility of winding a wide alloy metal tape (5) on them (6) and rewinding it from one coil (4) to another (7), while on one of the coils (4) the metal alloy (6) is connected to hydrogen to form metal hydride Al (ВH ₄ ) ₃ or Bi (BH ₄ ) ₂ with a high hydrogen content, wherein the tape (5) passes between the coils (4/7) about termovydelyayuschego electric element (8), p memory location outside the housing (1), ensuring separation of hydrogen therefrom, the housing has a glazed window (9) and the coil (3) are separated by a thermally insulating partition (10).

Work. The coils (3) are rewound so that after charging in the plating bath the entire tape (5) is located on the coil (4). A special drive (not shown in FIG. 1) allows the tape to rewind to a second reel (7). The tape (5) passes by the heat-generating elements (8), and under the influence of high temperature hydrogen is released. Its volume and release rate are determined by the temperature of the heat-generating element (8) and the speed of rotation of the coils (3). The location of the heat-generating element (8) outside the housing (1) eliminates the ignition of hydrogen. The thermally insulating partition (10) eliminates the heating of the coil (4) with excess heat from the coil (7). The housing (1) of the battery is made in the form of a cartridge (11). Through the hole (12) in the housing (1), hydrogen leaves the housing (1).

Technical and economic indicators are significantly higher than the prototype, because you can get the required amount of hydrogen from the battery, which allows you to make the battery itself a mobile device, and it is convenient in operation, and you can change the cartridge with the battery as necessary.

Claims (1)

A metal hydride hydrogen storage battery having a housing, a fuel cell battery, characterized in that the battery is made in the form of two coils made with the possibility of winding a wide metal alloy ribbon on them and rewinding it from one coil to another, while on one of the coils the metal alloy is connected to hydrogen to form a metal hydride Al (BH ₄ ) ₃ or Bi (BH ₄ ) ₂ with a high hydrogen content, and the tape passes between the coils near the heat-generating electrical element located outside the housing, with ensuring the release of hydrogen from it, the casing has a glazed window, and the coils are separated by a thermally insulating partition.