Method for manufacturing shunt resistor

A method for manufacturing a shunt resistor, the method comprising:

• placing a plurality of resistor modules on a conveyer, wherein each of the resistor modules comprises a resistor plate, a first electrode plate, and a second electrode plate, the resistor plate has a first side surface and a second side surface opposite to the first side surface, the first electrode plate is spliced with the first side surface of the resistor plate, and the second electrode plate is spliced with the second side surface of the resistor plate;
• performing a pressing step on each of the resistor modules sequentially through the first electrode plate and the second electrode plate of each of the resistor modules, thereby forming a first connection surface between the first electrode plate and the first side surface of the resistor plate of each of the resistor modules, and forming a second connection surface between the second electrode plate and the second side surface of the resistor plate of each of the resistor modules;
• and
• applying a current to the resistor modules conveyed by the conveyer sequentially by using a first conductive module and a second conductive module, thereby welding the first electrode plate and the resistor plate of each of the resistor modules at the first connection surface, and welding the second electrode plate and the resistor plate of each of the resistor modules at the second connection surface, wherein the first conductive module and the second conductive module are respectively placed on two opposite ends of the first connection surface between the first electrode plate and the resistor plate of each of the resistor modules, and two opposite ends of the second connection surface between the second electrode plate and the resistor plate of each of the resistor modules, and when the current is applied to each of the resistor modules, the current is substantially parallel to the first connection surface and the second connection surface.