| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a voltage detecting device capable of inexpensively correcting the error between a plurality of voltage detection circuits arranged in response to an on-board battery where a plurality of secondary batteries are interconnected in series. <P>SOLUTION: A command is transmitted from a low pressure system CPU 30 to two voltage detection circuits 11 and 12 so as to detect voltages at both ends of a secondary battery C1n shared by blocks B1 and B2. The detection values of the secondary battery C1n detected by the voltage detection circuits 11 and 12 are transmitted to the low pressure system CPU 30, the detection value of the secondary battery C1n detected by the voltage detection circuit 12 is subtracted from the detection value of the secondary battery C1n detected by the voltage detection circuit 11 to calculate the detection error between the voltage detection circuits 11 and 12. When the detection value detected by the voltage detection circuit 12 is corrected with reference to the voltage detection circuit 11, the correction is performed by adding the detection error between the voltage detection circuits 11 and 12 to the detection values of the secondary batteries C21-C2n measured by the voltage detection circuit 12. <P>COPYRIGHT: (C)2007,JPO&INPIT |
