BATTERY DEVICE, BATTERY PACK SYSTEM, AND ELECTRIC PROPULSION VEHICLE

摘要

PROBLEM TO BE SOLVED: To reduce the number of wirings provided attendant to a series body of batteries.SOLUTION: A battery device 10 comprises: a battery container 2; a battery 1 contained in the battery container 2; a detection unit 31 that is provided inside the battery container 2 and detects at least the voltage and temperature of the battery 1; a radio communication unit 32 that is provided inside the battery container 2 and transmits the information detected by the detection unit 31 as data to the outside of the battery container 2; and a power supply circuit part 33 for supplying power to the detection unit 31 and the radio communication unit 32 by using the battery 1 as a power source.