Hydrogen storage system and flow rate adjusting valve used for same
A flow regulating valve and hydrogen storage technology, which is applied in power system fuel cells, lifting valves, balance valves, etc., can solve problems such as air tightness weakening, abnormal operation noise, and pressure difference of hydrogen tanks, and achieve the effect of reducing flow
Pending Publication Date: 2021-09-17
HYUNDAI MOTOR CO LTD +1
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Problems solved by technology
[0007] Meanwhile, when the pressure difference between multiple hydrogen tanks increases above a predetermined level, there is a problem with the airtightness of the high-pressure hydrogen valves (eg, solenoid valves) that maintain the pressure in the hydrogen tanks when the fuel cell electric vehicle is turned off. will weaken and the risk of hydrogen leakage will increase
Further, there is a problem that when the fuel cell electric vehicle is restarted, abnormal operation noise is generated due to the vibration of the high-pressure hydrogen valve caused by the pressure difference among the plurality of hydrogen tanks
[0008] However, in the prior art, there are problems in that a pressure difference is generated between the hydrogen tanks due to the difference in length between pipes connected to the respective hydrogen tanks, and due to the generation of sunlight and wind when the fuel cell electric vehicle is running. The internal temperature difference between the hydrogen tanks, so there will be a pressure difference between the individual hydrogen tanks
[0009] Therefore, studies have been conducted to minimize the pressure difference between hydrogen tanks and improve safety and reliability, but the results of such studies are still insufficient
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[0056] It is understood that the term "vehicle" or "vehicular" or other similar terms as used herein generally includes motor vehicles such as passenger vehicles including sport utility vehicles (SUVs), buses, trucks, various commercial vehicles , including boats and watercraft of ships of all kinds, aircraft, etc., and including hybrid vehicles, electric vehicles, plug-in hybrid vehicles, hydrogen-powered vehicles and other alternative fuels (e.g., fuels derived from resources other than petroleum) vehicle. As referred to herein, a hybrid vehicle is a vehicle that has two or more sources of power, such as a gasoline and electric dual power vehicle.
[0057] The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the present disclosure. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly dictates otherwise. It will be further ...
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The invention relates to a hydrogen storage system which includes: a first hydrogen tank provided in a fuel cell electric vehicle; a second hydrogen tank provided in the fuel cell electric vehicle and configured to store hydrogen independently of the first hydrogen tank; a manifold provided in the fuel cell electric vehicle and connected to the first hydrogen tank and the second hydrogen tank; a hydrogen supply line configured to connect the manifold and a fuel cell stack provided in the fuel cell electric vehicle; and a flow rate adjusting valve configured to adjust a flow rate of the hydrogen to be supplied to the manifold from at least one of the first hydrogen tank or the second hydrogen tank in accordance with a difference in pressure between the first hydrogen tank and the second hydrogen tank, so as to minimize a difference in pressure between the hydrogen tanks to improve safety and reliability.
Description
[0001] Cross References to Related Applications [0002] This application claims the benefit of Korean Patent Application No. 10-2020-0032209 filed with the Korean Intellectual Property Office on March 16, 2020, the entire contents of which are incorporated herein by reference. technical field [0003] The present disclosure relates to a hydrogen storage system and a flow regulating valve therefor, and more particularly, to a hydrogen storage system and a hydrogen storage system capable of minimizing the pressure difference between hydrogen tanks to improve safety and reliability. The flow regulating valve of the hydrogen storage system. Background technique [0004] A fuel cell electric vehicle (FCEV) generates electricity through an electrochemical reaction between oxygen and hydrogen in a fuel cell stack and uses this electricity as a power source. [0005] A fuel cell electric vehicle can continuously generate electricity by supplying fuel and air from the outside regar...
Claims
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IPC IPC(8): F17C7/00F17C13/04F16K17/32H01M8/04082H01M8/04089H01M8/04746
CPCF17C7/00F17C13/04F16K17/32H01M8/04208H01M8/04089H01M8/04753F17C2221/012F17C2201/0109F17C2205/013F17C2205/0352F17C2205/0388F17C2250/0626F17C2265/066F17C2270/0184F17C2270/0168B60K15/013B60K15/03006B60K2015/03026B60K2015/03118B60K2015/03315B60Y2400/202Y02E60/32Y02E60/50H01M8/04201F17C13/045F16K1/52F16K27/003H01M2250/20
Inventor 具珍祐郑明周
Owner HYUNDAI MOTOR CO LTD