Shunt resistor, method for manufacturing shunt resistor, and current detection device

A method for manufacturing a shunt resistor comprising a resistance element and a pair of electrodes connected to opposite ends of the resistance element, the method comprising:

• preparing a long shunt resistor base material with the pair of electrodes connected to the ends of the resistance element in a first direction;
• forming recessed portions on opposite side surfaces of the shunt resistor extending in a second direction perpendicular to the first direction;
• incorporating L-shaped openings into each electrode, the L-shaped openings comprising first and second linear portions with equal lengths parallel to the first and second directions, respectively;
• integrating voltage detection portions into the electrodes, the voltage detection portions being hollow cylindrical projections coaxially aligned with through holes in the electrodes;
• positioning threaded bolts between the L-shaped openings and the end surfaces of the electrodes, serving as connection points for input and output current signals.