| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a battery state monitoring system which can suppress increase in the number of components and a cost and has high noise resistance.SOLUTION: A battery state monitoring system comprises: a plurality of monitoring boards 20a to 20d mounting monitoring ICs 21a to 21d for monitoring a state of a battery pack configured by a plurality of a battery cells, respectively; a control board 10 mounting a control microcomputer 11 which receives a state of each battery pack monitored by the monitoring IC 21a to 21d and transmits a control instruction for each battery pack to the monitoring IC 21a; and photo couplers 31, 32, 33a to 33c which are connected to mutually different two circuits of the plurality of monitoring ICs 21a to 21d and control microcomputer 11 and transmit a serial signal between the two circuits. Each of the photo couplers 31, 32, 33a to 33c is mounted on a board mounting a circuit on the reception side of boards mounting mutually different two circuits.</p> |
