Abstract: With the increasing number of new energy vehicles, vehicle accidents occur frequently. New energy vehicles electrical safety testing equipment is used to inspect electric shock prevention safety and charging safety of vehicles. The accuracy of its inspection data determines whether the safety performance of new energy vehicles can be correctly evaluated. This paper studies a calibration method for high-value and low-value resistors, calibrates the key technical parameters of electrical safety testing equipment, namely insulation resistance and potential equalization, and develops a calibration device. After testing and verification, the device meets the technical requirements for calibrating electrical safety testing equipment, solves the problem of data accuracy, and thus ensures the driving safety of new energy vehicles on the road.

Key words: new energy vehicles; electrical safety inspection; calibration method; calibration device

摘要： 随着新能源汽车保有量的增加，车辆事故频繁发生，新能源汽车电安全检验设备是对 车辆进行防触电安全和充电安全检验的设备，其检验数据的准确性决定是否正确的评估新能 源汽车的安全性能。文章研究了一种高值电阻和低值电阻的校准方法，对电安全检验设备关 键技术参数绝缘电阻和电位均衡进行校准，并研制了校准装置，经测试验证后，达到了电安 全检验设备校准的技术要求，解决了检验数据准确性问题，从而保障了新能源汽车道路行驶 安全。

关键词: 新能源汽车；电安全检验；校准方法；校准装置