| abstract |
(57) [Summary] [PROBLEMS] To efficiently send a large amount of air into a battery pack and accurately detect the temperature of the battery. A charging device includes a battery pack (2) and a charger (6). The battery pack 2 includes a plurality of batteries 1, contact terminals 3 provided on an outer surface, and a vent 10. The charger 6 includes: a charging terminal 8 that contacts the contact terminal 3; Means for charging the battery 1 by contacting the charging terminal 8, and an air supply port 1 provided at a position facing the ventilation port 10. 1, and a blower fan 12 that discharges wind toward an air inlet 11 And A space through which air from the blower fan 12 does not pass is formed in the battery pack 2, and a detecting means 60 for detecting a battery temperature is disposed in the space through which air does not pass. |