BATTERY SYSTEM

摘要

PROBLEM TO BE SOLVED: To provide a battery system that is able to transmit the voltage of each battery cell by radio communication while restraining increase in costs and the number of components.SOLUTION: A battery system 1 comprises: battery cells 11a-11d each of which includes a positive electrode terminal 12P and a negative electrode terminal 12N; voltage detection circuits 13 for detecting the voltage of the battery cells 11a-11d; a voltage detection line 14 for connecting each positive electrode terminal 12P and each negative electrode terminal 12N of the battery cells 11a-11d with each voltage detection circuit 13; and an upper-level controller 31 for performing radio communication with the voltage detection circuits 13 to receive the voltage of each corresponding battery cell 11a-11d from each voltage detection circuit 13. The voltage detection line 14 functions as an antenna used for radio communication performed between the voltage detection circuits 13 and the upper-level controller 31.