COAXIAL DUAL-LOOP MAGNETIC CORE COIL COMPONENT FOR HIGH-PRECISION CROSS-CORE CLOSED-LOOP HALL CURRENT SENSOR

摘要

The present invention belongs to the field of magnetic core coil components for a Hall current sensor. Disclosed is a coaxial dual-loop magnetic core coil component for a high-precision cross-core closed-loop Hall current sensor, including two annular magnetic cores with an identical size and a skeleton. The two annular magnetic cores are coaxially mounted on the upper and lower surfaces of the skeleton, with n air gaps being provided on each annular magnetic core; the n air gaps are either distributed symmetrically or distributed evenly on each annular magnetic core, and 2n air gaps are mounted in a staggered manner and are either distributed symmetrically or distributed evenly on the entire coaxial dual loop; the arithmetic mean value of the output voltages of 2n Hall elements is calculated or the arithmetic mean value of the output voltages of n Hall elements of each loop is first calculated and then summed; a secondary coil winding around the skeleton is also included; and the skeleton is mounted on and the coil winding is connected to a printed circuit board, with Hall elements at a lower layer being directly connected to the printed circuit board, and Hall elements at an upper layer being connected to the printed circuit board through a conversion printed board. The beneficial effects of the present invention are a larger measurement range, higher precision, and lower costs.