The working principle of clock management includes clock signal generation, clock allocation, rate adaptation, clock stability control and protocol compatibility. The clock generation circuit integrated within the chip or provided externally generates accurate clock signals. The clock signal is transmitted to each communication interface through the clock distribution network inside the chip to ensure that all interfaces work synchronously. The clock rate is dynamically adjusted according to the data transmission requirements during the charging process to adapt to different data transmission rates. The clock stabilization circuit or software algorithm can reduce the jitter and drift of the clock signal and improve the reliability of communication. Clock management needs to be able to support multiple communication protocols, such as CAN, RS485, Ethernet, etc., to achieve effective communication with different vehicles.