Inductance coil capable for current detection

Abstract

The present invention discloses an inductance coil for making current detection. Said inductance coil is made up by using metal wire material through the processes of coiling and die-pressing. Said metal wire material can be corronel or manganese copper alloy material. Said invention also provides the concrete steps of its preparation method.

Description

technical field [0001] The invention relates to an inductance coil that can be used for current detection, in particular to an inductance coil in which the metal with a small temperature resistance (TCR) is made of nickel-copper alloy or manganese-copper alloy. When the current flowing through the product When it is increased, the DC resistance of the inductance coil is very low affected by temperature. With this kind of material, it has a relatively stable impedance value, which allows the product to obtain a more accurate DC resistance value (DCR) than copper metal wires. Background technique [0002] As we all know, in recent years, people at home and abroad have proposed a number of proposals in an attempt to improve the structure of the coil and its manufacturing method so that it meets the current high-tech computer products' requirements for lightness, thinness, shortness, and smallness. In the U.S. Patent No. 6,204,744 B1 approved in 2001, an improved coil is propose...

AI Technical Summary

Problems solved by technology

[0005] 1. When manufacturing the coil, the electrode must be manufactured separately and then welded. This welding electrode step leads to the inability to effectively reduce the manufacturing process, resulting in an inability to reduce the production cost

[0006] 2. Since the manufacturing process still maintains many steps, the chance of forming a defective rate in the manufacturing process is greatly increased, and the production capacity cannot be effectively improved.

[0007] 3. Since the existing coils are mostly wound with copper wires, their high temperature resistance (TCR) makes it impossible to use their DC resistance (DCR) value to detect current signals. An additional micro-ohm component needs to be connected in series to make the circuit Increased design cost

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