This paper proposes a communication-integrated battery equalization strategy based on bidirectional flyback converters. In comparison to the strategies currently in use, the proposed strategy sends data by modulating the drive signal of the switching devices in the bidirectional flyback converter rather than using a separate signal transmission circuit, which reduces hardware complexity and lowers cost. Additionally, the receiver can demodulate data by analyzing the voltage ripple of the input and output ports in the bidirectional flyback converter. In this paper, the experiment achieves an 8.33kb/s communication rate and verifies the feasibility of the proposed strategy.