| 摘要 |
A charging/discharging monitoring device of a battery pack, includes: a plurality of monitoring integrated circuits; a plurality of wiring boards on which the plurality of monitoring integrated circuits are mounted, respectively; and a plurality of signal transmission paths for, via corresponded respective capacitors, connecting between the plurality of wiring boards. The charging/discharging monitoring device is configured with a two-wire transmission path for connecting between terminals of an upstream-side monitoring integrated circuit of daisy chain connection and a downstream-side monitoring integrated circuit thereof, and a wire length of a wiring part which connects between the respective capacitors and terminals of the corresponding monitoring integrated circuits on the wiring boards is a length in which resonance is not caused by the electromagnetic wave noises in an electromagnetic wave noise environment under which the wiring boards are arranged.
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