| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a current detector capable of accurately detecting current without cutting a bus bar and accurately measuring a bus bar temperature. <P>SOLUTION: In a current detector 10 which is provided with a flat part 11F in a bus bar 11 mounted in a battery post and is mounted with a circuit board 12 in the flat part 11F to determine current flowing in the bus bar 11 from voltage drop and a known resistance value in the bus bar 11, an amplifier circuit, a bus bar temperature detection circuit and a microcomputer are mounted on the circuit board 12, the voltage drop in the bus bar 11 is inputted into the amplifier circuit to be amplified with a prescribed amplification factor, the bus bar temperature detection circuit detects the temperature of the bus bar 11 when detecting the voltage drop and inputs the temperature into the microcomputer, the microcomputer calculates a correction value of the amplification factor in relation to the inputted detection temperature and transmits the correction value to the amplifier circuit, the amplifier circuit corrects the amplification factor based on the correction value, and a high heat conduction material 13 is injected between the bus bar 11 and the circuit board 12. <P>COPYRIGHT: (C)2012,JPO&INPIT |
