| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a voltage-balance correction circuit, which corrects a voltage balance of a plurality of secondary batteries connected in series, that allows, in particular, reducing the number of circuit elements, shortening the processing time of overcurrent detection, and performing the overcurrent detection without delay. <P>SOLUTION: A voltage-balance correction circuit for first and second batteries connected in series includes: a first switching element connected in parallel to the first battery; a second switching element connected in parallel to the second battery; an inductor that is disposed between the connection portion of the first and second batteries and the connection portion of the first and second switching elements, turns on the first switching element, charges electromagnetic energy by driving the first battery, turns on the second switching element, and charges the second battery by the electromagnetic energy; and control means that detects an overcurrent to the first and second switching elements, and then turns off the first and second switching elements when detecting the overcurrent. <P>COPYRIGHT: (C)2013,JPO&INPIT |
