US 12,228,247 B2
Hydrogen storage system
Noris Gallandat, Schwarzsee (CH)
Assigned to GRZ TECHNOLOGIES SA, Avenches (CH)
Appl. No. 17/603,665
Filed by GRZ TECHNOLOGIES SA, Avenches (CH)
PCT Filed Apr. 7, 2020, PCT No. PCT/EP2020/059860
§ 371(c)(1), (2) Date Oct. 14, 2021,
PCT Pub. No. WO2020/212197, PCT Pub. Date Oct. 22, 2020.
Claims priority of application No. 19169845 (EP), filed on Apr. 17, 2019.
Prior Publication US 2022/0299167 A1, Sep. 22, 2022
Int. Cl. F17C 11/00 (2006.01); F17C 13/02 (2006.01); H01M 8/065 (2016.01)
CPC F17C 11/005 (2013.01) [F17C 13/025 (2013.01); F17C 13/026 (2013.01); F17C 2205/0326 (2013.01); F17C 2221/012 (2013.01); F17C 2250/043 (2013.01); F17C 2250/0439 (2013.01)] 25 Claims
OG exemplary drawing
 
1. Hydrogen storage system comprising a plurality of hydrogen storage tanks each containing at least one metal hydride (MH) storage material, a hydrogen gas flow circuit connected to the storage tanks and a control system including pressure sensors (P) and temperature sensors (T) arranged for measuring the pressure and temperature in each storage tank, the gas flow circuit comprising valves (V, V1, . . . Vn) coupling said plurality of storage tanks to an inlet, respectively an outlet of the hydrogen storage system, whereby the inlet and outlet may be common or may be separate, wherein at least a first hydrogen storage tank comprises a first metal hydride (MH1) of a first composition and at least a second hydrogen storage tank comprises a second metal hydride (MH2) of a second composition, said first metal hydride having a temperature operating range from a first minimum operating temperature (TLP1) to first maximum operating temperature (TLP2) corresponding to a pressure operating range from a minimum operating pressure (P2) to a maximum operating pressure (P1), and said second metal hydride having a temperature operating range from a second minimum operating temperature (THP1) to second maximum operating temperature (THP2) corresponding to said pressure operating range from said minimum operating pressure (P2) to said maximum operating pressure (P1), whereby the first maximum operating temperature is greater than the second maximum operating temperature (TLP2>THP2), the second minimum operating temperature is lower than said first minimum operating temperature (THP1<TLP1), and the second maximum operating temperature is greater than said first minimum operating temperature (THP2>TLP1), the first and second storage tanks being coupled together in parallel via at least one valve (Vnai, Vnbi, Vnao, Vnbo) arranged to switch between the first and second hydrogen storage tanks (6a, 6b) depending on the inlet or outlet pressure in a manner to operate charging and discharging of the storage system from the second minimum operating temperature (THP1) to the first maximum operating temperature (TLP2) corresponding to a pressure operating range from the minimum operating pressure (P2) to the maximum operating pressure (P1).