为满足新能源汽车电池管理系统（BMS）对数据实时性、可靠性及安全性的要求，文章系统梳理CAN、以太网等有线通信技术以及蓝牙、4G/5G 等无线通信技术在BMS 中的应用场景与技术特性。结合BMS的核心功能与通信挑战，从架构通信、车云通信、无线BMS、芯片支持、安全性等方面，详细分析通信技术在BMS各项功能中的应用方法，建立通信技术在BMS 中的应用技术体系，明确各通信协议的应用领域及特点。

In order to meet the requirements of new energy vehicle BMS for real-time data, reliability and security, this paper systematically analyzes the application scenarios and technical characteristics of wired communication technologies such as CAN and Ethernet and wireless communication technologies such as Bluetooth and 4G/5G in BMS. Combining the core functions and communication challenges of BMS, the application methods of communication technology in each function of BMS are analyzed in detail from the aspects of architectural communication, car-cloud communication, wireless BMS, chip support, security, etc., the application technology system of communication technology in BMS is established, and the application fields and characteristics of each communication protocol are determined.