US 11,738,638 B2
Hydrogen storage system and flow rate adjusting valve used for same
Jin Woo Koo, Seoul (KR); and Myung Ju Jung, Gyeonggi-Do (KR)
Assigned to Hyundai Motor Company, Seoul (KR); and Kia Motors Corporation, Seoul (KR)
Filed by Hyundai Motor Company, Seoul (KR); and Kia Motors Corporation, Seoul (KR)
Filed on Sep. 28, 2020, as Appl. No. 17/34,223.
Claims priority of application No. 10-2020-0032209 (KR), filed on Mar. 16, 2020.
Prior Publication US 2021/0284012 A1, Sep. 16, 2021
Int. Cl. B60P 3/00 (2006.01); B60K 15/03 (2006.01); B60K 15/01 (2006.01)
CPC B60K 15/03006 (2013.01) [B60K 15/013 (2013.01); B60K 2015/03026 (2013.01); B60K 2015/03118 (2013.01); B60K 2015/03315 (2013.01)] 15 Claims
OG exemplary drawing
 
1. A hydrogen storage system, comprising:
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 including a chamber housing having an operating chamber that communicates with the first hydrogen tank and the second hydrogen tank, wherein the valve is configured to:
actuate within the chamber housing in response to a difference in pressure between the first hydrogen tank and the second hydrogen tank; and
adjust a flow rate of the hydrogen to be supplied to the manifold from the first hydrogen tank and the second hydrogen tank;
wherein, when a pressure in the first hydrogen tank becomes a first pressure and a pressure in the second hydrogen tank becomes a second pressure lower than the first pressure, a flow rate of the hydrogen to be supplied from the first hydrogen tank to the manifold is increased and a flow rate of the hydrogen to be supplied from the second hydrogen tank to the manifold is decreased.