EP 4305409 A1 20240117 - DEVICE AND METHOD FOR ASCERTAINING THERMAL CONDUCTIVITY OF A GAS, TANK ARRANGEMENT, AND VEHICLE
Title (en)
DEVICE AND METHOD FOR ASCERTAINING THERMAL CONDUCTIVITY OF A GAS, TANK ARRANGEMENT, AND VEHICLE
Title (de)
VORRICHTUNG UND VERFAHREN ZUM ERMITTELN EINER WÄRMELEITFÄHIGKEIT EINES GASES, TANKANORDNUNG UND FAHRZEUG
Title (fr)
DISPOSITIF ET PROCÉDÉ DE DÉTERMINATION DE CONDUCTIVITÉ THERMIQUE D'UN GAZ, ENSEMBLE RÉSERVOIR ET VÉHICULE
Publication
Application
Priority
- DE 102021105681 A 20210309
- EP 2022055748 W 20220307
Abstract (en)
[origin: WO2022189354A1] The invention relates to a device for ascertaining a hydrogen concentration or hydrogen mixture concentration, having: an electric conductor assembly (2, 200, 300) which is designed such that it can be brought into contact with the hydrogen or hydrogen mixture and which is in the form of a voltage divider with two elements (21, 221, 321, 521, 22, 222, 322), wherein the first element is a first conductor (21, 221, 321) which, at least in a current-conducting state, has a resistance value that differs from that of the second element (22, 222, 322); a measuring bridge (4, 240, 340) with two voltage dividers connected in parallel, one of said voltage dividers being formed by the electric conductor assembly (2, 200, 300); an actuation unit (6) for applying an AC voltage (U0) to the measuring bridge (4, 240, 340); a voltage measuring unit (8) for measuring a bridge voltage (Ub); and an analysis unit (10) which is configured to ascertain the thermal conductivity of the hydrogen or hydrogen mixture by analyzing the bridge voltage (Ub) using the 3-omega method.
IPC 8 full level
G01N 27/18 (2006.01)
CPC (source: EP US)
G01M 3/002 (2013.01 - EP US); G01N 27/18 (2013.01 - EP US); G01N 33/005 (2013.01 - US); G01N 33/0062 (2013.01 - US); G01N 33/225 (2013.01 - EP); H01M 8/04313 (2013.01 - EP); H01M 8/0444 (2013.01 - EP); H01M 8/04664 (2013.01 - EP); G01N 25/18 (2013.01 - EP); H01M 2250/20 (2013.01 - EP)
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated extension state (EPC)
BA ME
Designated validation state (EPC)
KH MA MD TN
DOCDB simple family (publication)
DE 102022105250 A1 20220915; CN 116981938 A 20231031; EP 4305409 A1 20240117; US 2024151675 A1 20240509; WO 2022189354 A1 20220915
DOCDB simple family (application)
DE 102022105250 A 20220307; CN 202280020400 A 20220307; EP 2022055748 W 20220307; EP 22711029 A 20220307; US 202218281155 A 20220307