Patent ID: 8810235
Filing Date: 2014-08-19
Classification: G01R

Abstract:
1. A current sensor for outputting a detection signal corresponding to a current flowing through a bus bar, the current sensor comprising: a magnetic core that concentrates and amplifies magnetic flux generated by the current near a detection portion of the bus bar; a magnetic detection element that detects the magnetic flux concentrated by the magnetic core and outputs an electrical signal corresponding to the detected magnetic flux; a signal processing circuit that includes electronic components and processes the electrical signal output from the magnetic detection element to generate the detection signal; a lead frame onto which the magnetic detection element and the electronic components of the signal processing circuit are mounted; and a first member that integrates the detection portion of the bus bar and the magnetic core; a second member that integrates a power supply terminal and an output terminal of the current sensor; wherein the magnetic detection element, the electronic components, and the lead frame are combined to form a single sensor module; the current sensor detects the current flowing through the bus bar with the sensor module and outputs the detection signal; the sensor module is coupled to the power supply terminal and the output terminal to attach the sensor module to the second member; and the first and second members are coupled to each other to form the current sensor.