Patent ID: 8513950
Filing Date: 2013-08-20
Classification: G01R,H01M,Y02E

Abstract:
1. A current sensor which senses current passing through a harness via a terminal of a battery, comprising: a fixed part to which the harness is fixed; a resistor which is inserted between the terminal and the fixed part; a circuit board which measures current passing through the resistor based on a potential difference between two positions along the direction in which current is passed through the resistor; and a case which accommodates the resistor and the circuit board, wherein the circuit board includes a plurality of amplifiers which amplify potential difference between the two positions, an analog-digital converter which converts output voltages of the amplifiers into digital data of a predetermined number of bits, and a current measuring/processing unit which measures current passing through the resistor based on the digital data outputted from the analog-digital converter.