Hydrogen storage system for fuel cell vehicle

A fuel cell stack and hydrogen storage technology, applied in the field of hydrogen storage systems, can solve problems such as low weight storage density, low hydrogen release temperature, and inability to meet the hydrogen supply conditions of fuel cell stacks
CN101459249AInactive Publication Date: 2009-06-17HYUNDAI MOTOR CO LTD +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
HYUNDAI MOTOR CO LTD
Publication Date
2009-06-17
Estimated Expiration
Not applicable · inactive patent

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Abstract

The present invention provides a hydrogen storage system using a metal hydride (MH), which can increase volumetric storage density of hydrogen and total hydrogen storage capacity and improve system packaging. For this purpose, the present invention provides a hydrogen storage system for a fuel cell vehicle, the hydrogen storage system including: an outer space filled with a first storage alloy powder that is able to release hydrogen at a high temperature; an inner space filled with a second storage alloy powder that is able to release hydrogen only with heat generated from a fuel cell stack; a metal filter disposed between the outer and inner spaces so as to divide the outer and inner spaces; a second heat exchange tube provided between the fuel cell stack and a radiator to constitute a cooling loop and arranged along a longitudinal direction of the inner space; and an independent heat exchange loop independently connected to the outer space for the hydrogen release of the first storage alloy powder.
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Description

technical field

[0001] The invention relates to a hydrogen storage system for a fuel cell vehicle. More specifically, the present invention relates to hydrogen storage systems using metal hydrides (MH), which can increase the volumetric storage density and total hydrogen storage capacity of hydrogen and improve system packaging. Background technique

[0002] A basic requirement for a commercial fuel cell vehicle is to achieve a sufficient driving range corresponding to that of an internal combustion engine vehicle without refueling.

[0003] For example, to achieve a range of 300 miles on one refueling, the vehicle must store no less than about 5 kg of hydrogen.

[0004] Currently, high-pressure (35 MPa or 70 MPa) hydrogen storage systems are used in fuel cell vehicles; however, they limit the increase in hydrogen storage capacity due to the low density of gaseous hydrogen.

[0005] That is, to store 5 Kg of hydrogen using a 35 MPa hydrogen storage system requires a storag...

Claims

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