Method for manufacturing shunt resistor

Abstract

The present invention provides a method for manufacturing a shunt resistor. In the method, a first electrode plate body and a second electrode plate body are provided. The first electrode plate body comprises a first bearing part, and the first bearing part is provided with a first opening. The second electrode plate body comprises a second bearing part, and the second bearing part is provided with a second opening. A resistor plate body is arranged between the first electrode plate body and the second electrode plate body. The resistor plate body comprises a first through hole and a second through hole which respectively correspond to the first opening and the second opening. A first rivet is pressed and arranged in the first through hole and the first opening hole. A second rivet is pressed and arranged in the second through hole and the second opening. A current is applied to the first rivet and the second rivet to allow the first rivet to be welded with the first electrode plate body and the resistor plate body and allow the rivet to be welded with the second electrode plate body and the resistor plate body. The production efficiency can be effectively improved by using the rivet to preposition the resistor plate body and directly applying a current to the rivets in a welding mode, and the energy consumption of the welding resistor module can be greatly reduced.

Description

technical field [0001] The present invention relates to a resistor, and more particularly to a method of manufacturing a shunt resistor with a modular structure. Background technique [0002] When manufacturing shunt resistors, technologies such as E-beam welding, seam welding, or laser beam welding are generally used to combine high-conductivity electrode materials and resistance alloy materials to form resistors. Composite. Cutting and punching the resistor composite material to form a plurality of preliminary models of the shunt resistors. Then, use the resistance adjustment machine to adjust the resistance value of the initial model of the shunt resistor, so as to make the resistance value of the shunt resistor more precise. [0003] However, the electron beam welding operation must be carried out under vacuum throughout, so the welding processing cost is high. In addition, material splashing is easy to occur during electron beam welding, which will not only affect th...

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Problems solved by technology

[0003] However, the electron beam welding operation must be carried out under vacuum throughout, so the welding process cost is high

In addition, material splashing is easy to occur during electron beam welding, which will not only affect the body of the resistance alloy material, but also make it difficult to control the resistance of the shunt resistor, and also form holes and / or splash protrusions on the surface of the shunt resistor objects, resulting in an unsightly appearance of the shunt resistor

Moreover, if the depth of the electron beam is not adjusted properly during welding, obvious weld beads will be formed, and the resistance value of the shunt resistor will also be difficult to control

Furthermore, the stress in the resistance composite will change during stamping, resulting in a change in the resistance value of the shunt resistor

Therefore, shunt resistors manufactured by electron beam welding technology need to spend a lot of time for repairing

In addition, the remaining part of the resistance composite material after stamping is not easy to recycle because it is a composite material of electrode material and resistance alloy material

[0004] When using the laser to weld resistance composite materials up and down, the laser often has large and small situations, which will lead to poor appearance of the weld bead and make it difficult to control the resistance value of the shunt resistor

In addition, laser welding technology also has the disadvantages that the remaining part of the material is not easy to recycle and reuse, and the resistance trimming is time-consuming.

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