电气间隙是汽车电气设备绝缘配合的核心要素之一,直接决定车辆电气系统的绝缘可靠性与运行安全性。本文基于国内外汽车电气安全标准体系,分析电气间隙的设计原理、关键影响因素及规范要求,重点阐述额定电压、过电压类别、车载污染等级等因素对电气间隙确定的作用机制,旨在为汽车电气设备的设计制造、检测认证提供技术支撑。

Clearance is one of the core elements of insulation coordination for automotive electrical equipment, directly determining the insulation reliability and operational safety of vehicle electrical systems. Based on domestic and international automotive electrical safety standard systems, this paper analyzes the design principles, key influencing factors, and specification requirements of clearance, and focuses on expounding the mechanism by which factors such as rated voltage, overvoltage category, and on-board pollution degree affect the determination of clearance, aiming to provide technical support for the design, manufacturing, testing, and certification of automotive electrical equipment.