US 11,892,483 B2
Current measuring resistor and associated production method
Benjamin Seel, Dillenburg-Eibach (DE); Jan Marien, Herborn (DE); Florian Bernhardt, Dillenburg-Manderbach (DE); Siegfried Herb, Siegen (DE); Michael Pollmann, Dillenburg (DE); and Alexander Wassmann, Siegen (DE)
Assigned to ISABELLENHUETTE MEUSLER GMBH & CO. KG, Dillenburg (DE)
Appl. No. 17/270,754
Filed by Isabellenhuette Heusler GmbH & Co. KG, Dillenburg (DE)
PCT Filed Sep. 4, 2018, PCT No. PCT/EP2018/073686
§ 371(c)(1), (2) Date Feb. 23, 2021,
PCT Pub. No. WO2020/048584, PCT Pub. Date Mar. 12, 2020.
Prior Publication US 2021/0223296 A1, Jul. 22, 2021
Int. Cl. G01R 19/10 (2006.01); G01K 7/16 (2006.01); H01C 17/00 (2006.01)
CPC G01R 19/10 (2013.01) [G01K 7/16 (2013.01); H01C 17/00 (2013.01)] 34 Claims
OG exemplary drawing
 
1. A current measuring resistor for measuring an electric current, comprising:
a) a first connection part comprising a conductor material for introducing the electric current into the current measuring resistor,
b) a second connection part comprising a conductor material for conducting the electric current out of the current measuring resistor, and
c) a resistor element comprising a low-resistance resistance material, the resistor element being arranged in a direction of current flow between the first connection part and the second connection part and being joined to the first and second connection parts so that the electric current to be measured flows through the resistor element during operation and produces a voltage drop across the resistor element,
wherein:
d) the first connection part, the second connection part and the resistor element each have a substantially round cross-section in a sectional plane at right angles to the direction of flow of the electric current,
e) the resistor element has an outer diameter which is larger than the outer diameter of the first and second connection parts,
f) the resistor element is arranged centrally between the first and second connection parts with respect to the current flow direction, and
g) the current measuring resistor has a transition contour between the first and second connection parts with a smaller outer diameter and the central resistor element with a larger outer diameter.