本文总结当前电动汽车和混合动力汽车 Zonal 架构下基于 12V 的电气分配方式，分析该 12V 系统的优势与不足。随后，对基于 48V 的电源系统在 Zonal 架构中的分配方式演进进行分析，从 DC/DC 转换效率与成本、电子熔断丝以及线束使用等方面展开分析，最终总结 48V 系统的优势及未来应用面临的挑战。

This paper summarizes the current electric distribution mode based on 12V in Electric Vehicle (EV) and Hybrid Electric Vehicle (HEV) Zonal architecture, and analyzes the advantages and disadvantages of the 12V system. Then, the evolution of distribution mode of 48V based power system in Zonal architecture is analyzed, including the aspects of DC-DC conversion efficiency and cost, eFuse and harness use are comprehensively analyzed, and the advantages of 48V system and the challenges faced by future applications are summarized.