关键词: 新能源汽车；高寒环境；可靠性行驶；故障分析

Abstract: In response to the current situation of incomplete and inconsistent high-cold environment reliability running test method for new energy vehicles, this article develops a new test method, which provides clear requirements for the test environment, test vehicle, test route, drive operation, and inspection content. At the same time, this article provides relevant ways or measures for fault detection, judgment, and handling. By selecting six new energy vehicles, the test was carried out in Yakeshi City, Inner Mongolia Autonomous Region, and the fault statistics and analysis were carried out. From the test results, it can be seen that the developed test method is effective and can comprehensively stimulate vehicle faults. At the same time, some new types of faults were discovered, which needs to be taken seriously by the vehicle enterprise. It is hoped that this study can provide relevant test guidance for vehicle enterprises.

Key words: new energy vehicles; high-cold environment; reliability running; fault analysis